An injection molding machine is configured with: a plasticizing unit configured to cause a supplied thermoplastic resin to be in a completely molten state; a mixing and kneading unit configured to receive the thermoplastic resin in the completely molten state by the plasticizing unit and also configured to receive reinforcing fiber for mixing and kneading the thermoplastic resin and the reinforcing fiber while heating; and a kneading and injection unit configured to inject the thermoplastic resin and the reinforcing fiber, both mixed and kneaded together, into a cavity in a clamping device.
B29C 45/54 - Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B29C 45/58 - Means for plasticising or homogenising the moulding material or forcing it into the mould Details
2.
INJECTION MOLDING MACHINE AND CLAMPING FORCE VARIATION ADJUSTMENT METHOD OF INJECTION MOLDING MACHINE
An injection molding machine includes: a clamping device having a fixed mold and a movable mold, configuring a mold, and a clamping force sensor to detect a clamping force of the movable mold to the fixed mold; an injection device having an injection nozzle and a screw to fill the mold with a molten resin via the injection nozzle; and a control device, wherein the control device monitors a variation of the clamping force from the clamping force sensor, causes a slow speed forward movement time at a timing of VP switching to be increased if the variation exceeds a predetermined upper limit, and causes the slow speed forward movement time at the timing of VP switching to be reduced if the variation falls below a predetermined lower limit.
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Metalworking machines and tools; parts and accessories of
metalworking machines and tools; die casting machines; parts
and accessories of die casting machines; injection molding
machines; parts and accessories of injection molding
machines; plastic injection molding machines; parts and
accessories of plastic injection molding machines; plastic
processing machines; parts and accessories of plastic
processing machines. Computer software; downloadable computer software for remote
monitoring and analysis; computer operating programs;
computer programs; measuring or testing machines and
instruments; remote control telemetering machines and
instruments; personal digital assistants; telecommunication
machines and apparatus; parts and accessories for
telecommunication machines and apparatus; computers;
computer peripheral devices; computer hardware; data
processing apparatus; tablet computers; electronic control
apparatus. Repair or maintenance of metalworking machines and tools;
providing information relating to the repair or maintenance
of metalworking machines and tools; repair or maintenance of
injection molding machines for processing plastics;
providing information relating to the repair or maintenance
of injection molding machines for processing plastics;
repair or maintenance of metal die casting machines;
providing information relating to the repair or maintenance
of metal die casting machines; repair or maintenance of
plastic processing machines and apparatus; providing
information relating to the repair or maintenance of plastic
processing machines and apparatus; providing information
relating to the repair or maintenance of measuring and
testing machines; repair or maintenance of measuring and
testing machines and instruments; repair or maintenance of
electronic machines and apparatus; providing information
relating to the repair or maintenance of electronic machines
and apparatus. Rental of metal treating machines and tools; providing
information relating to the rental of metal treating
machines and tools. Calibration [measuring]; consultation services relating to
calibration [measuring]; computer software design, computer
programming, or maintenance of computer software; computer
software design; design, development, hosting, installing,
updating, and maintenance of computer software; designing of
machines, apparatus, instruments [including their parts] or
systems composed of such machines, apparatus and
instruments; technological advice relating to industrial
machines.
A molding machine includes an injection device to inject a molding material into a mold and a control device to control the injection device. The injection device includes a heating cylinder filled with the molding material and a screw moving forward/backward inside the cylinder to inject the molding material, and can move forward/backward between a communication orientation where a distal end of the cylinder communicates with the clamped mold and a separation orientation where the distal end separates from the mold and can pivot on a pivot shaft between the separation orientation not allowing insertion/removal of the screw and a pivot orientation allowing the insertion/removal. The molding machine further includes a sensor to detect these orientations. The control device determines that the screw has been replaced by the sensor detecting that the injection device pivots from the separation orientation to the pivot orientation and returns to the separation orientation.
A molding machine includes: an injection device to inject a molding material into a cavity of a clamped mold; a display device to display information; a memory capable of storing condition data sets that include setting values; and a control device to control the injection device according to one data set preselected from the data sets stored in the memory. The control device selectively executes a selected condition display process of listing the setting values in the selected condition data set on the display device and a stand-by condition display process of listing the setting values in a stand-by condition data set (one of the condition data sets different from the selected condition data set) on the display device, and in the stand-by condition display process, causes the display device to display the setting values identical to and different from those of the selected condition data set in different modes.
An external signal control device and a molding machine are provided that facilitate setting for connecting again an external device having been connected once. A control unit 7 is used for an injection molding machine. The control unit 7 has an optional output signal port OP1 to be connected to an external device, a storage device 73 to store control information of the optional output signal port OP1, and a control device 78. The control information includes signal port use information and output condition information. If the signal port use information is ON, the control device 78 controls the optional output signal port OP1 based on the output condition information, and if the signal port use information is OFF, controls the optional output signal port OP1 so as to cause the optional output signal port OP1 to not function.
G05B 19/4155 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
A data display device and a molding machine are provided. A control unit displays a monitor screen. The monitor screen is capable of displaying a first data display section and a second data display section. In the first and second data display sections, a plurality of data sets are displayed in vertical alignment in chronological order, each of the data sets including a plurality of data items related to one molding operation displayed in a row. If a switch split-screen display button is touched while only the first data display section is displayed, the second data display section is displayed in vertical alignment with the first data display section. If the switch split-screen display button is touched while the first data display section and the second data display section are displayed, the second data display section is cleared and only the first data display section is displayed.
40 - Treatment of materials; recycling, air and water treatment,
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
metalworking machines and tools; parts and accessories of metalworking machines and tools; die casting machines; parts and accessories of die casting machines; injection molding machines; parts and accessories of injection molding machines; plastic injection molding machines; parts and accessories of plastic injection molding machines; plastic processing machines; parts and accessories of plastic processing machines rental of metal treating machines and tools; providing information relating to the rental of metal treating machines and tools computer software; downloadable computer software for remote monitoring and analysis; computer operating programs; computer programs; measuring or testing machines and instruments; remote control telemetering machines and instruments; personal digital assistants; telecommunication machines and apparatus; parts and accessories for telecommunication machines and apparatus; electronic machines; apparatus and their parts repair or maintenance of metalworking machines and tools; providing information relating to the repair or maintenance of metalworking machines and tools; repair or maintenance of injection molding machines for processing plastics; providing information relating to the repair or maintenance of injection molding machines for processing plastics; repair or maintenance of metal die casting; providing information relating to the repair or maintenance of metal die casting; repair or maintenance of plastic processing machines and apparatus; providing information relating to the repair or maintenance of plastic processing machines and apparatus; providing information relating to the repair or maintenance of measuring and testing machines; repair or maintenance of measuring and testing machines and instruments; repair or maintenance of electronic machines and apparatus; providing information relating to the repair or maintenance of electronic machines and apparatus calibration [measuring]; consultation services relating to calibration [measuring] ; computer software design, computer programming, or maintenance of computer software; computer software design; design, development, hosting, installing, updating, and maintenance of computer software; designing of machines, apparatus, instruments [including their parts] or systems composed of such machines, apparatus and instruments; technological advice relating to industrial machines
[Problem] To provide a molding machine having a simple structure that makes it possible to suitably mix different types of resin materials. [Solution] A cylinder 30 of an injection molding machine includes: an inner space 33 defined by an inner peripheral surface 30b of the cylinder 30; and a first supply passage 31 and a second supply passage 32 that extend from an outer peripheral surface 30a to the inner peripheral surface 30b of the cylinder 30 and are connected to the inner space 33. A connection port 32a, for connecting with the inner space 33 of the second supply passage 32, is located forward of a connection port 31a, for connecting with the inner space 33 of the first supply passage 31. When the cylinder 30 is viewed from above, the connection port 31a of the first supply passage 31 is offset from the central axis L of the cylinder 30. When the cylinder 30 is viewed from above, the connection port 32a of the second supply passage 32 is located on the central axis L of the cylinder 30.
[Problem] To forcibly knead both solid and liquid phases at the early stage of a plasticization process and promote melting of a solid bed (SB) in a screw groove. [Solution] Some of a solid phase part serving as a solid bed (SB) in a screw groove or some of a melt pool (MP) in a preceding screw groove is forcibly introduced into a solid-liquid phase kneading zone via a branch stream formation opening part forming a branch stream. As a result, resin materials of both solid and liquid phases are kneaded at an early stage to promote melting of the solid phase, and the kneaded and melted resin materials are measured. After the measurement operation, a screw is advanced by an advancing/retracting driving means provided with an injection motor and a ball screw mechanism to inject a measured amount of the melted resin materials into the cavity of closed molds via an injection nozzle.
An injection device (4) is provided with: a heating cylinder (31) in which a screw (34) is accommodated; a heating cylinder head (32) provided at a tip end of the heating cylinder; and an injection nozzle (33) coupled to a tip end of the heating cylinder head. The heating cylinder head accommodates a sleeve (61) partially made of porous sintered metal material, and a needle (62) partially made of porous sintered metal material is arranged inside a center hole (61d) formed in the sleeve. Thus, a physical foaming agent supplied from a physical foaming agent supplying device (5) is introduced into a plasticized resin stored in a metering resin storing part (54), from both the outer peripheral side and the inner peripheral side of the center hole.
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29C 45/18 - Feeding the material into the injection moulding apparatus
[Problem] To measure with high accuracy the amount of a melt poured into an injection sleeve in order to inject and fill a mold cavity with the melt. [Solution] A die cast machine comprises a ladle 4 that scoops up molten metal from a melting furnace, an injection sleeve 7 into which the molten metal scooped up by the ladle 4 is poured, an injection plunger 8 that advances and retreats inside the injection sleeve, and an injection cylinder 9 that causes the injection plunger 8 to advance and retreat, the molten metal inside the injection sleeve being injected and charged into the cavity of a closed mold by the injection cylinder 9 advancing the injection plunger 8, wherein said die cast machine comprises a magnetostriction type melt surface sensor 10 that measures the melt surface height h of the molten metal poured into the injection sleeve from the ladle 4.
The present invention pertains to an injection molding system provided with: an input condition storage unit 23 that stores an inputted plasticization condition; an ideal plasticized state storage unit 24 that stores information about an ideal plasticized state; a comparison unit 25 that compares an input condition simulation unit 29 of a plasticization condition based on data stored in the input condition storage unit 23 with the information stored in the ideal plasticized state storage unit 24; an optimal condition analysis/calculation unit 26 that calculates the optimal plasticization condition by using the data stored in the input condition storage unit 23 and the information stored in the ideal plasticized state storage unit 24 when the comparison unit 25 determines that the data stored in the input condition storage unit 23 is not about an ideal plasticized state; and a condition change instruction unit 28 that displays on a display unit 22 information necessary for changing the optimal plasticization condition on the basis of the calculation result of the optimal condition analysis/calculation unit 26.
[Problem] To provide an injection molding screw capable of effectively making the molten state of a resin material uniform, and an injection molding machine having the same. [Solution] An injection molding machine 1 comprises a heating cylinder 21 and a screw 30 accommodated in the heating cylinder 21. In addition, the screw 30 has a compression part flight portion 35, which is a partial section of a flight 33, formed such that an angle β, formed by an axial line L of a rotation axis 31 and a base end side surface 35a, is greater at a front end side portion than at a base end side portion.
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
B29C 45/54 - Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
17.
ELECTRIC DIE CAST MACHINE AND METHOD FOR CONTROLLING SAME
[Problem] To provide an electric die cast machine and a method for controlling same that are capable of effectively suppressing variations in rises in the pressure-increase pressure. [Solution] An electric die cast machine 1 executes a pressure increase preparation operation in which, when the position of advancement of an injection plunger 20 reaches a pressure increase switching position L2 during a high-speed injection operation, the torque T of a first electric motor 11 and a second electric motor 12 is limited to being no greater than a limit torque value Tr set to be lower than a maximum torque value Tmax of the electric motors, and the injection plunger 20 is advanced. The electric die cast machine 1 executes a pressure increase operation in which the limiting of the torque of the first electric motor 11 and the second electric motor 12 is canceled when a torque limiting cancel criterion is satisfied during the pressure increase preparation operation, and the injection plunger 20 is pressed forward.
In order to be capable of reliably supplying a prescribed amount of fiber materials into a heating cylinder for each cycle and continuously manufacturing a homogeneous composite material, a plasticizing unit is provided with a fiber supply device 3 that supplies prescribed amount of fiber materials A2 having a prescribed length into the heating cylinder 1. The fiber supply device 3 is provided with: a cutting section 12 that cuts off a long fiber material A1 pulled out from a reel 11 into a prescribed length; a pressure-feeding section 13 that presses the fiber materials A2 having the prescribed length cut off by the cutting section 12 into the heating cylinder 1; and a fiber transfer device 45 that forcibly transfers the fiber materials A2 accumulated in the cutting section 12 to the pressure-feeding section 13. The pressure-feeding section 13 is constituted by a press cylinder 41 and a press piston 42, and the fiber transfer device 45 is constituted by a vacuum device.
B29C 31/02 - Dispensing from vessels, e.g. hoppers
B29B 7/24 - Component parts, details or accessoriesAuxiliary operations for feeding
B29C 48/285 - Feeding the extrusion material to the extruder
B29B 7/14 - MixingKneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with screw or helix
B29K 105/12 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
B29B 7/86 - Component parts, details or accessoriesAuxiliary operations for working at sub- or superatmospheric pressure
B29C 45/18 - Feeding the material into the injection moulding apparatus
B29C 48/80 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
B29C 48/395 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
[Problem] To provide a molding machine provided with a tailstock capable of ensuring the rigidity of a connection part of a toggle link mechanism. [Solution] A molding machine is provided with a tailstock for connection with a toggle link mechanism that causes a movable die plate to advance or retreat. The tailstock has a box shape composed of a front rectangular part and a rear rectangular part formed by integrally connecting together two upper and lower horizontal beams arranged vertically and extending horizontally and two left and right vertical beams arranged to the left and right and extending vertically. The tailstock has tie bar insertion holes formed at four corners of the front rectangular part and the rear rectangular part, and a plurality of plate-shaped toggle link connection parts formed to connect the toggle link mechanism. Built-up portions are provided on lateral surfaces of the toggle link connection parts and between adjacent toggle link connection parts.
[Problem] To provide a molding machine in which a mold opening/closing mechanism and an injection mechanism are provided on a substantially cuboid-shaped machine base, a door capable of opening and closing is provided substantially in the center portion of the front side of the molding machine above the machine base, and an operation panel in which an integrated operation part and a display part comprising a display panel is disposed on the front side of the machine base, adjacent to the mold opening/closing mechanism. [Solution] A molding machine in which: an operation panel is substantially cuboid shaped, the short side thereof being disposed in the vertical direction and the long side thereof being disposed in the horizontal direction; the operation panel is disposed so as to be able to rotate in the horizontal direction while maintaining an upright orientation about a pivot part on one long side thereof; the operation panel is substantially thin box-shaped overall, and the substantially thin box shape comprises a front box part and a rear box part adjoining each other; the dimensions in the horizontal direction of the front box part and the rear box part are essentially the same; the dimensions in the vertical direction of the front box part and the rear box part are such that the dimension of the front box part is larger than the dimension of the rear box part; as a result of the front box part adjoining the rear box part and extending further than the rear box part at the bottom, a step is formed at the bottom end part of the operation panel.
[Problem] To provide: a display operation device that can suppress increases in the mis-operation of operation switches; and a molding machine that comprises the display operation device. [Solution] A display operation device 20 that has: a case 70 that has a vertically long front part 71; a display part 21 that is arranged on the front part of the case 70 so as to be vertically long; multifunction operation switches 41-50 that are aligned in a single horizontal row at a lower edge section 72 of the front part 71 of the case 70; and mode operation switches 51-55 that are aligned in a single vertical row at a side edge section 73 of the front part 71 of the case 70.
[Problem] To provide: a display operation device that can easily ascertain the operation authority of a logged-in user; and a molding machine that includes the display operation device. [Solution] An injection molding machine 1 that comprises a molding machine main body 10 and a display operation device 20. The display operation device 20 comprises a display part 21, a touch panel 22, and a storage part 59 that associates and stores user login information and groups. When a user is logged in, a control part 60 makes the display part 21 display a username for the user and the group to which the user belongs.
G06F 3/0481 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
[Problem] To provide a display operation device that can suppress unwanted operations and that can allocate a greater number of functions to a hardware operation switch while suppressing the number of hardware operation switches; and a molding machine that comprises the display operation device. [Solution] A display operation device 20 that has: a display part 21 that is overlapped by a touch panel 22; a control part 60 that displays a screw removal button 21d1 on the display part 21 and makes said button function, in combination with the touch panel 22, as a software operation switch; and a shared operation switch 56 that is a hardware operation switch. When the software operation switch generated by the combination of the touch panel 22 and the screw removal button 21d1 that is displayed on the display part 21 is tapped, the control part 60 dynamically allocates a screw removal function to the shared operation switch 56.
G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
24.
DISPLAY OPERATION DEVICE, MOLDING MACHINE, AND MACHINE TOOL
[Problem] To provide: a display operation device that can more efficiently give an explanation of the usage thereof; a molding machine that comprises the display operation device; and a machine tool that comprises the display operation device. [Solution] A display operation device 20 that generates: screen data information D1 for a screen that is being displayed on a display part 21; and screen data information D2 that includes screen specification information D2 that specifies said screen. When screen information D has been inputted from outside, the display operation device 20 displays, on the display part 21, a screen that is specified by screen specification information D2 that is included in said screen information D.
G06F 3/0481 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
25.
DISPLAY OPERATION TERMINAL DEVICE, MOLDING SYSTEM, AND PROGRAM
[Problem] To provide a display operation terminal device with which a plurality of injection molding machines can be more easily operated, a molding system comprising the display operation terminal device, and a program which is executed by a computer possessed by the display operation terminal device. [Solution] A display operation terminal device 20 associates a plurality of molding machines 1-9 with a plurality of connection cut-off buttons 51 provided to a molding machine management screen G1 displayed on a display unit 21. If a connection cut-off button 51 is tapped, the molding machine associated with the connection cut-off button 51 is connected so as to be capable of communication, and a display operation window 80 corresponding to the molding machine is displayed on a display unit 21 in a manner so as to overlap with and be positioned to the rear of a molding machine management window 40.
The present invention is provided with: a screw shaft 6; a nut body 7 which is driven forward and backward by the screw shaft 6; an injection plunger 8a which moves in conjunction with forward and backward movement of the nut body 7; injection/pressure-increasing electric servomotors 2a, 2b, and 3 which rotatably drive the screw shaft 6; a first pulley 16 which transmits drive force of the injection electric servomotors 2a and 2b to the screw shaft 6; a second pulley 14 which transmits drive force of the pressure-increasing electric servomotor 3 to the screw shaft 6; and a one-way clutch 11 disposed between the second pulley 14 and the screw shaft 6. The one-way clutch 11 is attached to one end of the screw shaft 6, and the second pulley 14 and the first pulley 16 are attached in this order inward of the one-way clutch 11. Furthermore, a rotary damper 12 is installed between the one-way clutch 11 and the second pulley 14.
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
[Problem] To provide: a display operation device with which it is possible to effectively increase the accuracy of an operation input to an operation switch when a function allocated to the operation switch cannot be recognized; and a molding machine that is provided with said device. [Solution] This display operation device 20 for an injection molding machine 1 has a display unit 21 and a simple display unit 55 having a simpler configuration than the display unit 21. The display operation device 20 displays a selected function group on the simple display unit 55 even when a function label that indicates the functions allocated to a plurality of operation switches 41-50 is not being displayed due to the fact that the display function of the display unit 21 has been stopped.
[Problem] To provide: a display operation device with which it is possible, when inputting an operation to select a new screen group, to more accurately grasp a screen displayed after the input of the operation; and a molding machine that is provided with said device. [Solution] When a two-point up swipe operation or two-point down swipe operation is input to a touch panel 22 of this display operation device 20, this injection molding machine 1 displays, on a main screen region 21b of a display unit 21, a predetermined standard screen that is included in a screen group that has been newly selected from among a plurality of screen groups T1-T10 in accordance with the input operation.
G06F 3/0484 - Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
29.
INJECTION MOLDING MACHINE AND INJECTION MOLDING MACHINE SCREW FOR INJECTING MOLTEN RESIN IN WHICH THERMOPLASTIC RESIN AND REINFORCING FIBERS HAVE BEEN MIXED AND MELTED
[Problem] The present invention provides an injection molding machine and screw therefor with which, when mixing reinforcing fibers in a molten resin and injection molding same, the reinforcing fibers can be uniformly dispersed in the molten resin. [Solution] For a screw 7 provided in an injection molding machine 1, a kneading section 17 is provided on the downstream side of a compressing section 18. Three helical scrapers 17a (x, y, z) are provided in the kneading section 17 and three grooves 17b, 17b', which are helically disposed in the opposite or the same direction as the orientation of said scrapers 17a, 17a', are formed. As a result of said grooves 17b, 17b', it is possible to keep the fiber lengths of the reinforcing fibers long and even if the reinforcing fibers become tangled in the compressing section 18, the fibers are defibrated in the kneading section 17, the shearing of long fibers in the molten resin is mitigated, the reinforcing fibers are dispersed uniformly and a good product is obtained.
The damage to devices are avoided, by performing operation control of a hydraulic operating means and an electric servomotor, that are adapted as drive sources in an injection step, separately and not performing coordinate control. A die casting machine 1 includes a tubular injection sleeve 12, an injection plunger 13, an electric servomotor 17 and a hydraulic operating means 21 which are used as a drive source of an injection step, and a control means 30 which controls the electric servomotor 17 and the hydraulic operating means separately, when injecting and filling the cavity of the mold, which has been closed, with the molten metal by the advancing of the injection plunger 13, during a low-speed injection step and a high-speed injection step which is performed at a higher speed than the low-speed injection step, in the injection step.
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
In the present invention, in order to show all components at once on a display screen without performing a screen operation such as scrolling even in the case where the font size has been enlarged, a microcomputer 1, when an operator instructs enlargement of the font size of a mode image 100A displayed on a display screen of a display device 5, calculates the sizes and layouts of components 101a-101j and 102a-102f that constitute the mode image 100A; calculates, for each component in accordance with the number of characters displayed in each component, a font size that can be displayed in an enlarged manner in the components without changing the layout of a character string 103 displayed in each component; and displays character strings of the calculated font sizes in the corresponding components.
[Problem] To provide an injection molding machine with which satisfactory die parallelism can be achieved during molding. [Solution] This injection molding machine is provided with a fixed die plate 1 to which is attached a fixed die 2 relative to which a movable die 4 moves to open and close a mold; an injection nozzle 8 that is in contact with the fixed die 2; and a heating cylinder 7 to which the injection nozzle 8 is attached. When a molded body is being molded, the injection nozzle 8 and the heating cylinder 7, which may be heated to a high temperature, are disposed near the fixed die plate 1, to which the fixed die 2 is attached. The fixed die plate 1 with the fixed die 2 attached thereto is fitted with a heat insulation material 13 positioned above the injection nozzle 8 and the heating cylinder 7 and serving as a temperature control means.
When a control mode of an injection molding machine is switched to an attachment position confirmation mode, a controller 11 switches a control state of an electric servo motor 5 to a servo-on state. Next, a motor torque value acting on the electric servo motor 5 is detected while an upper die 4 is closed with respect to a lower die 3a, and a determination is made as to whether the detected motor torque value has reached a determination reference value stored in advance. When it is determined that the detected motor torque value has reached the determination reference value, the controller 11 causes a message to be displayed on the display screen of a display device 15 equipped with a touch panel, the message prompting the confirmation of the attachment positions of fixed dies 3a, 3b with respect to a rotary table 1.
In order to be capable of reliably supplying a prescribed amount of fiber materials into a heating cylinder for each cycle and continuously manufacturing a homogeneous composite material, a plasticizing unit is provided with a fiber supply device 3 that supplies a prescribed amount of fiber materials A2 having a prescribed length into the heating cylinder 1. The fiber supply device 3 is provided with: a cutting section 12 that cuts off a long fiber material A1 pulled out from a reel 11 into a prescribed length; a pressure-feeding section 13 that presses the fiber materials A2 having the prescribed length cut off by the cutting section 12 into the heating cylinder 1; and a fiber transfer device 45 that forcibly transfers the fiber materials A2 accumulated in the cutting section 12 to the pressure-feeding section 13. The pressure-feeding section 13 is constituted by a press cylinder 41 and a press piston 42, and the fiber transfer device 45 is constituted by a vacuum device.
B29B 7/14 - MixingKneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with screw or helix
B29B 7/24 - Component parts, details or accessoriesAuxiliary operations for feeding
B29C 31/02 - Dispensing from vessels, e.g. hoppers
B29C 45/18 - Feeding the material into the injection moulding apparatus
Provided is a foam injection molding machine whereby a foam-molded articles having a good-quality appearance can be inexpensively manufactured. At least a portion of a surface constituting a cavity 6 is configured from a porous body 10. A physical-foaming-agent introduction path 41 communicated with the cavity 6 through minute vacancies of the porous body 10 is formed in a fixed die 4 or a movable die 5, and a core member 81 is provided so that one end thereof is able to enter and exit the cavity 6. Molten resin from an injection unit 3 is injected/charged into the cavity 6 and a physical foaming agent from a physical-foaming-agent supplying device 7 is then supplied thereto, after which the core member 81 is driven backward by a core driving mechanism 82 and the pressure in the cavity 6 is reduced. The physical foaming agent is thereby expanded, and a foam-molded article having a predetermined shape is molded.
[Problem] To enable an easy shift from an initial, default setting to a customized setting when a servo motor of an injection molding machine is operated with the customized setting rather than the initial, factory setting. [Solution] An injection molding machine is provided with: an injection servo motor 2 driven when a molten resin is injected into a cavity of a mold; an input means 5 for inputting values associated with various injection operation conditions used to operate the injection servo motor 2; a storage means 6 for storing the values associated with the various injection operation conditions input by the input means 5; and a micro controller 3 controlling the operation of the injection servo motor 2 on the basis of the values associated with the various injection operation conditions stored in the storage means 6. The storage means 6 stores not only the values associated with the various injection operation conditions of the injection servo motor 2 at the time of factory shipment of the injection molding machine as default values but also customized values obtained by customizing the default values by a user.
An electric injection device 1 of a die-casting machine is provided with: a rotatably held screw shaft 5; a nut 7 that is screwed onto the screw shaft 5; an injection plunger 9 that is driven forward and backward in conjunction with the forward and backward movement of the nut 7; an injection electric servomotor 11 and a pressure-increasing electric servomotor 12 that rotationally drive the screw shaft 5; a one-way clutch 13 that is provided between the screw shaft 5 and the pressure-increasing electric servomotor 12; and a shock buffering device 10 that absorbs surge pressure that is applied to the injection plunger 9. The shock buffering device 10 includes: an elastic member 36 that receives surge pressure that is applied to the injection plunger 9 and elastically deforms; and a hydraulic damper device 37 that absorbs the vibration of the elastic member 36.
An electric injection device 1 of a die-casting machine is provided with: a rotatably held screw shaft 5; a nut 7 that is screwed onto the screw shaft 5 and that is driven forward and backward in accordance with the rotational drive of the screw shaft 5; an injection plunger 9 that is driven forward and backward in conjunction with the forward and backward movement of the nut 7; an injection electric servomotor 11 and a pressure-increasing electric servomotor 12 that rotationally drive the screw shaft 5; a one-way clutch 13 that is provided between the screw shaft 5 and the pressure-increasing electric servomotor 12; and a lubrication device 14 that rotates integrally with an outer ring 92 of the one-way clutch 13. The present invention lubricates the one-way clutch 13.
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
Provided is an in-die monitoring device of a die cast machine. The device enables the drive conditions for a squeeze pin to be easily and appropriately set, and the device is for manufacturing sound die cast products in a stable manner. The in-die monitoring device is provided with the following: an in-die pressure sensor 9 for detecting pressure inside a cavity 5; a squeeze pin 10 for applying localized pressurizing force to a molten metal that has been filled in the cavity 5; a stroke sensor 12 for detecting the displacement of the squeeze pin 10; a display device 33 that displays in-die pressure data detected by the in-die pressure sensor 9 and displacement data detected by the stroke sensor 12; and a control device 31. The control device 31 displays the in-die pressure data and displacement data on a display screen of the display device 33 along a shared time axis and at the same timing.
When integrally molding a thermoplastic resin that is to become the main body of the product and a fiber resin base material, the present invention limits the occurrence of defective molding in said integrally molded composite molding. A vertical injection molding machine 1: is provided with a rotary table 7, the direction of the shaft center of which is the vertical direction and which is provided so as to rotate freely, a lower mold provided on the upper surface of the rotary table 7, and an upper mold that is clamped and unclamped from said lower mold; and clamps and unclamps the molds in the vertical direction. The vertical injection molding machine is provided with a robot 5 for loading a flat section of a fiber resin base material 21 on the lower mold so as to face same, and a heater 14 for heating the fiber resin base material 21 loaded on the lower mold. When the flat section of the fiber resin base material 21 facing the lower mold is called the lower surface and the opposite surface is called the upper surface, the upper surface/lower surface direction of the fiber resin base material 21 is set to be the vertical direction, which matches the clamping/unclamping direction for the upper mold with the lower mold. As a result, it is possible to provide the fiber resin base material 21 integrally at a specified position of the product main body 20.
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29C 45/06 - Injection moulding apparatus using movable moulds on a turntable
A method for operating an injection molding machine 1 in which users operating the injection molding machine (1) are hierarchically sorted into a plurality of groups according to the occupation of each user, and the injection molding machine 1 is set so that a specific operation item assigned for each group is displayed in accordance with the group into which a user is classified, wherein a USB memory (30) in which an operation item, a user name, and a password are stored in advance is connected to an injection molding machine (1) desired for use among a plurality of injection molding machines (1). In this state, when a control unit (18) determines that a password inputted by a user matches the password stored in the USB memory (30), the operation item stored in the USB memory (30) can be displayed in a display unit (20) of the injection molding machine (1).
The present invention provides a kneader/extruder that is provided with a heating cylinder (16), a screw (17) housed in the heating cylinder (16) so as to be capable of rotation and forward/backward movement, and a die (18) attached to the tip of the heating cylinder (16), and generates a plastic compound (6) having a reinforcement fiber kneaded therein, said kneader/extruder being provided with a shutter member (19) that opens and closes a compound extrusion port (18a) provided in the die (18), and performing kneading and extrusion of the compound (6) intermittently. The shutter member (19) may be provided with a scraper (20) that scrapes the compound (6) off from the surface of the die (18). Due to this, this kneader/extruder can generate a one-press portion of the compound and can be easily maintained.
B29K 105/12 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
43.
INJECTION MOLDING DEVICE AND OPERATION CONTROL METHOD FOR SAME
Provided are: an injection molding device that can reliably prevent the occurrence of the stringing phenomenon without using a special device and without extending a molding cycle time; and an operation control method for the injection molding device. After an injection step (a primary injection step and a subsequent dwelling step) ends and a cooling step is started, pressure is applied to the resin inside an injection nozzle by moving a screw (s) forward, and the occurrence of the stringing phenomenon is prevented.
Provided is an electric die-casting machine which is capable of stably executing a series of molding cycles including an injection step, a pressure-increasing step, an extrusion step, and a withdrawal step, and exhibits excellent operability. During the extrusion step, a controller (13) stops an injection plunger (9) in a prescribed extrusion stoppage position by controlling the driving of an electric servo motor (10) for injection and/or an electric servo motor (11) for increasing pressure, according to a pre-set control pattern. In addition, during the withdrawal step, the controller (13) stops the injection plunger (9) in a prescribed initial position by controlling the driving of each of the electric servo motors (10, 11) in a manner such that the rotational speed of a screw shaft (5) driven by the electric servo motor (11) for increasing pressure is faster than the rotational speed of a screw shaft (5) driven by the electric servo motor (10) for injection.
Provided is an electric die-casting machine which makes it possible to appropriately evaluate the soundness of a shock-absorbing device, and to efficiently produce non-defective die-cast products. An electric injection device (1) is equipped with a shock-absorbing device (31) for absorbing surge pressure which acts on an injection plunger (9), and a controller (13) for evaluating the presence/absence of deterioration or the degree of deterioration of the shock-absorbing device (31). The controller (13) obtains the amount of compression of the shock-absorbing device (31) on the basis of the difference (S) between a nut-body (7) position calculated from output values from rotation sensors (10a, 11a) during the pressure-increasing step, and an injection-plunger (9) position calculated from the output value of a position sensor (17). The controller then determines the presence/absence of deterioration or the degree of deterioration of the shock-absorbing device (31), on the basis of a comparison between the obtained amount of compression of the shock-absorbing device (31) and the reference amount of compression which was stored in advance.
Provided is an electric die-casting machine which makes it possible to decrease the overall height of an injection device, and for which the maintenance of an electric servo motor for injection and an electric servo motor for increasing pressure and the like is simple. The electric servo motor (10) for injection and the electric servo motor (11) for increasing pressure are positioned above a frame (F) on which an electric injection device (1) is mounted, and are positioned on the rear-surface side of a screw shaft (5), when viewed from the side on which an operation panel (13a) is positioned.
Provided is a moulding machine with which a simple configuration can be used to adjust mould-clamping force with ease, without having to provide expensive sensors such as mould-clamping load cells. A control device (8) is provided with a mould-clamping-force determination mode. When the mould-clamping-force determination mode is selected, the control device (8) drives a mould-clamping unit (3) to clamp a mould device (5) with a predetermined mould-clamping force, and subsequently drives an ejection mechanism (6) to press, at a constant torque, against a mating surface (15a) of a fixed-side mould (15), an article push-out member (such as a return pin (45) or an ejection plate (50)) provided to the ejection mechanism (6). An injection unit (4) is subsequently driven to inject a moulding material into a mould cavity (17) and fill said cavity therewith. The operation state of the ejection mechanism (6) during injection is displayed on a display device (7), and the suitability of the mould-clamping force is determined.
The present invention reduces the percentage of defective manufactured moldings by reducing the supply of undesirable gas into the cavity of the mold. The injection molding machine is provided with a heating cylinder (3) for melting a resin material and a resin material supply device (6) for supplying the resin material to the heating cylinder (3). The resin material supply device (6) is provided with: a pump (12) for generating a suction force when driven; a charge hopper (9) into which the resin material is charged as a result of the suction force generated by driving the pump (12); an openable/closeable sealing valve (10) provided on the lower section of the charge hopper (9); and a supply hopper (11) to which resin material charged in the charge hopper (9) is supplied via the sealing valve (10). By driving a vacuum pump (20), resin material is supplied into the heating cylinder (3) with the interior of the supply hopper (11) and the interior of the heating cylinder (3), which communicates with the interior of the supply hopper (11), under vacuum.
The present invention is designed to improve the quality of moldings molded by a mold by ensuring parallelism of the fixed die with the moving die. An injection molding machine provided with a moving die plate (6) to be mounted on the moving die (2) and support frames (13) for supporting the moving die plate (6), wherein the support frames (13) provided on the sides of the moving die plate (6) are provided with first support pins (14) having the left-right direction of the moving die plate (6) as the shaft center direction and second support pins (15) having the up-down direction of the moving die plate (6) as the shaft center direction. The first support pins (14) support the moving die plate (6) so as to rotate freely in the pitching direction. The second support pins (15) support the support frames (13), which support the moving die plate (6) so as to rotate freely in the pitching direction, so as to rotate freely in the yawing direction.
Provided is a molding condition diagnostic device capable of diagnosing the suitability of a molding condition set in advance from a measurement value detected during continuous automatic operation, and notifying an operator when the molding condition is inappropriate. A molding machine is provided with a molding condition diagnostic device (1) for determining the appropriateness of a molding condition setting value and notifying an operator. The molding condition diagnostic device (1) has an input part (2) to which is inputted a measurement value outputted from a measurement means (11) and a molding condition setting value set by a molding condition setting means (30), a comparison unit (3) for comparing the measurement value and molding condition setting value inputted to the input unit (2), a storage unit (4) for storing a determination reference for determining that the molding condition setting value is unsuitable, and a determination unit (5) for determining whether the result of comparison by the comparison unit (3) satisfies the determination reference stored in the storage unit (4). When the determination unit (5) has determined that the result of comparison by the comparison unit (3) satisfies the determination reference stored in the storage unit (4), a specific determination message corresponding to the compared measurement value and molding condition setting value is outputted to a display unit (6).
A molding machine provided with a movable die plate (6) on which a movable die (5) is mounted, a fixed die plate (3) on which a fixed die (8) is mounted, and multiple metal tie bars (4) that are fixed on the fixed die plate (3) and guide the movable die plate (6) so as to advance and retract freely. The molding machine is provided with: temperature adjustment blocks (9) that cover the circumference of the tie bars (4) and are disposed near the fixed die plate (3); piping (10) for supplying a medium to the temperature adjustment blocks (9); and a temperature adjustment means (11) for adjusting the temperature of the liquid supplied to the temperature adjustment blocks (9) through the piping (10). A liquid adjusted to a specified temperature by the temperature adjustment means (11) is supplied to the temperature adjustment blocks (9) through the piping (10) and the respective temperatures of the tie bars (4) in contact with the temperature adjustment blocks (9) are adjusted so as to reach a desired temperature, thereby making it possible to adjust the clamping force.
Provided is an injection molding machine whereby drive can be reliably transmitted to a ball screw shaft driven during execution of an injection step. An injection molding machine provided with: a ball screw mechanism (10) comprising a ball screw shaft (8) provided so as to be able to rotate, and a nut body (9) screwed onto the ball screw shaft; a bearing (12) for supporting the ball screw shaft (8); and a pusher plate (7) to which the bearing (12) is mounted, the pusher plate (7) being able to advance and retreat, and the pusher plate (7) being advanced in conjunction with the rotation of the ball screw shaft (8) when an injection step is performed; there being provided: a cylindrical sleeve (13) fitted on an external periphery of the ball screw shaft (8) and disposed between the ball screw shaft (8) and the bearing (12); a lock nut (14) for preventing the sleeve (13) fitted on the external periphery of the ball screw shaft (8) from coming off, the lock nut (14) being screwed onto the ball screw shaft (8); and a pulley (15) mounted to the sleeve (13).
The present invention obtains high quality moldings and limits wasted electric power consumption by fine control of heater temperature by PID control. First - fourth temperature sensors (20A - 20D) for measuring the respective temperatures of first - fourth heaters (15A - 15D) are provided. When the temperatures of the first - fourth heaters (15A - 15D) measured by the first - fourth temperature sensors (20A - 20D) exceed previously set temperatures by 0.4°C - 1.0°C, a control means (14) performs PID control of an air supply means (19) to control the 0.4°C - 1.0°C high temperatures of the first - fourth heaters (15A - 15D) so as to approach the previously set temperatures for the first - fourth heaters (15A - 15D).
A die casting machine and a control method for avoiding damage to devices by performing operation control of a hydraulic operating means and an electric servomotor, that are adapted as drive sources in an injection step, separately and not performing coordinate control. The die casting machine includes a tubular injection sleeve, an injection plunger, an electric servomotor and a hydraulic operating means that are used as a drive source of an injection step, and a control means which controls the electric servomotor and the hydraulic operating means separately, when injecting and filling the cavity of the mold, which has been closed, with the molten metal by the advancing of the injection plunger, during a low-speed injection step and a high-speed injection step which is performed at a higher speed than the low-speed injection step, in the injection step.
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
Provided is an injection molder for preventing foreign substances from entering a through-hole provided in a ceiling plate of a unit base, the injection molder being easily maintained and having excellent durability. A unit base (2) is provided in a revolvable manner on a machine stand (1), and a heating cylinder attachment bracket (5) of an injection unit (3) is installed in an extendable and retractable manner on the unit base (2). A nut body (16) of a ball-screw mechanism (15) secured to the heating cylinder attachment bracket (5) is threaded over a ball-screw shaft (19) of the ball-screw mechanism (15) disposed in a rotatable manner within the unit base (2), and the ball-screw shaft (19) is rotatably driven by a nozzle touch motor. The top surface of the unit base (2) is covered by a cover sheet (33) which expands and contracts according to the extending and retracting of the heating cylinder attachment bracket (5).
Provided is a molding machine with a high working rate that is capable of preventing malfunctions of the clamping device and the mold device when stopped. The molding machine is configured from a machine table (1), a clamping device (2) and an injection device (3) disposed on the machine table (1), sensors for detecting the operating states of various units of the molding machine, a display unit (4b) provided at an appropriate place on the machine table (1), a display lamp (6) and a buzzer (7), and a system controller (10) for determining whether or not a malfunction has occurred from the operation states of various units of the molding machine and, when it is determined that a malfunction has occurred, operating the display unit (4b), the display lamp (6) and the buzzer (7) to issue the necessary warning. When the system controller (10) determines from the operation states of the various units of the molding machine that operation of the molding machine is stopped and the clamping device is in a clamped state, the system controller starts a timer (11) to start timing and, after a specified time set by said timer has elapsed, operates the display unit (4b), the display lamp (6) and the buzzer (7) to sound an alarm.
Provided is a molding diagnosis device for continuously diagnosing the operational stability of a molding machine detected during continuous automatic operation and reporting necessary messages to the operator by displaying same on a display device. In addition to setting nozzle temperature as a diagnostic category for operational stability of the molding machine body (10) in a storage unit (4), a standard value for the deviation in nozzle temperature is stored as a diagnostic standard value. When an assessment unit (5) determines that the deviation between the maximum value and the minimum value for the nozzle temperature sampled over the number of shots set by the shot number-setting unit (60) is at or above the standard value for the nozzle temperature deviation set in the storage unit (4), character data that "there is variation in the nozzle temperature," which indicates that the deviation in nozzle temperature is greater than the standard value, is displayed on a monitor unit (6).
An operation method for an injection molding machine (1) which sorts users into a plurality of groups according to occupation and grants operation authority to users belonging to each of the groups such that only a specific operation can be performed, wherein when an operation spanning a plurality of groups is desired to be performed, a screen selection button (30) is displayed on a menu screen by selecting a low-ranking designated group among the plurality of groups. By pressing the screen selection button (30) displayed on the menu screen, a list of all operation items of the injection molding machine (1) is displayed on a screen selection screen of a display unit (20). By displaying, selecting, and setting an operation item corresponding to the operation spanning the plurality of groups by selecting display or non-display of the operation items displayed on the screen selection screen, the selected and set operation item is additionally displayed on the menu screen, and an operation corresponding to the additionally displayed operation item can be performed.
Provided is an injection molding machine capable of supporting an injection unit cover that covers an injection mechanism part without the injection unit cover easily deflecting due to its own weight even if the injection unit cover has a simple configuration. An injection molding machine is provided with an injection unit cover (15) that covers an injection mechanism part (12) that is operated for the purpose of injecting molten resin to a cavity of a mold such that the injection mechanism unit is not exposed to the outside, and the injection unit cover (15) comprises a U-shaped cover (16), and right and left side covers (17) that cover both side surfaces facing each other of the U-shaped cover (16). The side covers (17) each have a structure divided into a front side cover (17a) and a back side cover (17b), and by fastening adjacent portions thereof such that the portions are double stacked in a longitudinal direction, this double fastening in the longitudinal direction serves as a support structure that suppresses the deflection of the U-shaped cover (16).
This invention is provided with: a ball screw mechanism (17) comprising a ball screw shaft (15) and a nut body (16); a heating cylinder mounting bracket (13) moved so as to advance or retract with the nut body (16); an injection nozzle (11) mounted on the heating cylinder mounting bracket (13) with a heating cylinder (10) interposed therebetween; a nozzle touch motor (22) for causing the ball screw shaft (15) to rotate; and a unit base (20) for supporting the heating cylinder mounting bracket (13) so as to advance or retract freely. The rear end of the ball screw shaft (15) is retractably supported so that it is possible to moderate the reaction force generated when the injection nozzle (11) is brought into intimate contact with the resin inlet (6a) of the fixed mold (6) by the ball screw shaft (15) being caused to rotate and the nut body (16) being caused to advance.
Provided is a malfunction monitoring method for an injection molding machine, the method being capable of detecting as a malfunction the presence of a foreign object such as a portion of a molding between the molds on the basis of a change in torque value during mold-opening, which occurs in the first half of a low pressure mold-closing process that is performed before a high pressure mold-closing process, and when such a malfunction occurs, being capable of quickly stopping the mold closure action. When the injection molding machine (1) is being operated, if the torque value of a servo motor (17) in a malfunction-monitoring region (S-E) deviates from the range between an upper limit (U) torque value and a lower limit (L) torque value, a malfunction-determining means (25) determines that a foreign object is present between the molds and when the malfunction-determining means (25) determines that a foreign object is present, a servo motor-stopping means (26) stops the servo motor (17).
The purpose of the present invention is to enable prescribed injection operations and pressure-increasing operations by reducing the size and weight of an electric die casting machine and to not need to control the ON and OFF operation of a power auxiliary clutch. An electric die casting machine is provided with a screw shaft (5) held in a rotatable manner, a nut body (7) threadably mounted on the screw shaft (5) so as to be able to move forward and backward, an injection plunger (9) which moves forward or backward in conjunction with the forward and backward movement of the nut body (7), an injection electric servo motor (10) and a pressure-increasing electric servo motor (11) which rotate and drive the screw shaft (5), and a one-way clutch (12) disposed between the screw shaft (5) and the pressure-increasing electric servo motor (11), wherein when decelerating the injection electric servo motor (10) during a high-speed injection step, the pressure-increasing electric servo motor (11) is started up, the rotational force of the pressure-increasing electric servo motor (11) is transferred to the screw shaft (5) via the one-way clutch (12), and a pressure-increasing step is carried out following the injection step.
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
Provided is a small electric die casting machine wherein it is possible to suppress the surge pressure generated in a molten metal that was injection-filled into a die cavity. An electric injection device (1) for an electric die casting machine is configured by containing a screw shaft (5) held in a rotatable manner, a nut body (7) which is threadably mounted on the screw shaft (5) and which is driven forward or backward in accordance with the screw shaft (5) being rotated and driven, an injection plunger (9) which is driven forward or backward in conjunction with the forward and backward movement of the nut body (7), a guide bar (6) which guides the nut body (7) and the injection plunger (9) in the forward and backward direction, and an injection electric servo motor (10) for rotating and driving the screw shaft (5), wherein a shock absorbing device (31) which elastically deforms by receiving the surge pressure that acts on the injection plunger (9) is disposed between the nut body (7) and the guide bar (6).
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
The purpose of the present invention is to reduce the size of an electric die casting machine and to improve the performance of the electric die casting machine. An electric injection device (1) for an electric die casting machine is provided with a screw shaft (5) which is held by a holding plate (3) in a rotatable manner via bearings (23, 24), a nut body (7) which is threadably mounted on the screw shaft (5) and which is driven forward and backward in accordance with the screw shaft (5) being rotated and driven, an injection plunger (9) which is driven forward and backward in conjunction with the forward and backward movement of the nut body (7), an injection electric servo motor (10) for rotating and driving the screw shaft (5), and a load cell unit (27) which detects the pressure acting on the injection plunger (9), wherein the load cell unit (27) is formed in the shape of a ring of which the inner diameter is larger than the outer diameter of the screw shaft (5), and the ring-shaped load cell unit (27) is arranged in a concentric manner relative to the screw shaft (5) and is disposed between the holding plate (3) and the holder (22) of the bearings (23, 24).
In order to provide a molding machine provided with a frame such that it is possible to easily perform necessary fabrication by being lightweight and highly rigid, a frame (1) that carries a clamping device (2) and an injection machine (3) is configured from: a bottom structural body (11); and a top structural body (12) that is a rectangular parallelepiped structure assembled on the bottom structural body. The top structural body (12) is configured from the combination of a plurality of vertical plates (124) to which a window hole (124a) is provided at a desired location. By contrast, the bottom structural body (11) is formed, with the entirety being frame-shaped, from: a primary member (111) comprising two pieces of mold steel disposed in parallel to each other; and a lateral beam (112) comprising a plurality of pieces of mold steel that connect the two pieces of primary member. The lateral beams (112) are disposed at both ends of the primary member (111) and at positions facing both end sections of the window hole (124a) provided to the top structural body (12).
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
Provided is a load cell attachment structure for an injection molding machine, whereby attachment/detachment of a load cell in an injection device can be facilitated, and the resin pressure acting on a screw can be precisely detected. An injection device (3) is provided with a heating tube attachment bracket (13) for holding a heating cylinder (14), a plurality of nut bodies (18) fixed to the heating tube attachment bracket (13), threaded shafts (38) screwed into the nut bodies (18), a linear motion body (31) for retaining the threaded shafts (38) to allow rotation thereof, a screw (15) inserted in the heating cylinder (14) so as to be able to rotate and travel forward and backward, a rotating connector (34) for connecting the screw (15) and the linear motion body (31), a measuring electric servo motor (36) for driving rotation of the screw (15), an injection electric servo motor (40) for driving rotation of the threaded shafts (38), and a load cell (19) for detecting a resin pressure acting on the screw (15). The load cell (19) is disposed between the heating tube attachment bracket (13) and at least one of the plurality of nut bodies (18).
The objective of the present invention is to achieve versatility and reduced costs by means of a configuration whereby a device that is formed in a molding machine and that performs a pressurization process can easily be switched between an electrical pressurization unit that is driven by an electrical drive source and a hydraulic pressurization unit that is driven by a hydraulic drive source, in accordance with the type of molded body being manufactured, for example. This molding machine is equipped with a cylindrical injection sleeve (12) to which molten metal is supplied and an injection plunger (13) that is advanced/retracted within the injection sleeve (12), and a molding material is injected by means of the forward progress of the injection plunger (13) so as to fill a cavity in a closed mold. In addition, this molding machine is equipped with an injection piston (14) that moves the injection plunger (13) forward, and an injection manifold (15) that houses the injection piston (14) such that the injection piston can freely be advanced/retracted. In addition, the configuration is such that a hydraulic pressurization unit (70) and an electrical pressurization unit (50), which increase the pressure of the molding material that has been injected so as to fill the cavity in the mold, can be interchangeably attached to a pressurization unit attachment surface (40) provided on one surface of the injection manifold (15).
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
Provided is a welding member holding device capable of stably holding a member that is a possible welding target so that the same does not fall or shift position and capable of improving workability and worker safety during welding. A welding member holding device (1), capable of holding one member (2) in direct contact with another member (3) when joining the one member (2) to the other member (3), comprises: a negative pressure generating means (7) for generating negative pressure; an adhering body (5) to adhere to the other member (3) by way of the negative pressure generated by the negative pressure generating means (7); and a piston rod (4) to press the one member (2), which is in direct contact with the other member (3), toward the other member (3) by way of the negative pressure generated by the negative pressure generating means (7). The negative pressure generating means (7) generates the suction of the adhering body (5) and the pressing force of the piston rod (4) by way of negative pressure generated by compressed air being supplied.
B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
The vertical injection molding machine is provided with an electric servomotor which moves an injection drive unit up and down accompanying the rotation of a driven pulley via a ball screw mechanism, a timing belt by which the drive force of the electric servomotor is transmitted, and a driven pulley on which the timing belt is rotated, wherein an arc groove is formed on the driven pulley, and an election pin is provided which is inserted to the arc groove of the driven pulley when the timing belt is disconnected. When the election pin is inserted to the arc groove, the tip of the election pin applies pressure on an inclined portion by means of elastic force of a spring, slowing the rotational speed of the driven pulley and stopping the injection drive unit by an inner wall surface of the slowed driven pulley colliding with the ejection pin.
In the present invention damage to equipment can be avoided by carrying out individual control without joint control of operations of a hydraulic operating means used as a drive source for an injection steps and an electric servo motor. A die casting machine (1) is provided with a cylindrical injection sleeve (12) that supplies molten metal and an injection plunger (13) that is moved inside the injection sleeve and uses an electric servo motor (17) and a hydraulic operating means (21) for the drive sources for injection steps that inject into and fill the inside of a cavity of a metal mold, which has been closed, with the molten metal by forward progress of the injection plunger (13). Also provided is a control means (30) that controls the operations of the electric servo motor (17) and the hydraulic operating means (21) separately during a low-speed injection step and during a high-speed injection step that is carried out following the low-speed injection step at a higher speed than the low-speed injection step in the injection steps, when the forward motion of the injection plunger (13) injects into and fills the inside of the cavity of the metal mold, which has been closed, with the molten metal.
An injection molding machine is configured so that the injection screw can be replaced more easily. An injection molding machine comprises: a first electric servomotor (5) which is used as a drive source which is operated when measuring a molten resin injected into the cavity of a die; a first timing belt (8) to which the drive power of the first electric servomotor (5) is transmitted; a second rotating pulley (7) on which the first timing belt (8) is wound; and an injection screw (4) which, when measuring the molten resin, is rotated as the second rotating pulley (7) rotates. A circular arc groove (28) is formed in the second rotating pulley (7). The injection molding machine has a protrusion pin (26) provided so as to be capable of moving forward and backward, and the protrusion pin (26) can be inserted in the circular arc groove (28) formed in the second rotating pulley (7). The rotational operation of the injection screw (4) is restricted when the protrusion pin (26) is inserted in the circular arc groove (28) in the second rotating pulley (7).
Provided is a method for controlling the temperature of a thermoplastic resin in an injection molding machine, in which when normal operation of the injection molding machine is temporarily stopped and a control is performed to maintain the temperature of a thermoplastic resin in the heating cylinder, the control for maintaining the temperature can be performed so that no carbides are produced in the resin. When a switch is made from normal operation, in which a molded article is formed using the injection molding machine, to a control for maintaining the temperature, in order to prevent the thermoplastic resin in the heating cylinder (1) from carbonizing due to a rapid fall in temperature, a plurality of heaters (3a, 3b, 3c, 3d, 3e), the temperatures of which differ during normal operation of the injection molding machine, are cooled over a predetermined time (n × T) to a temperature maintenance limit temperature (t2) at which no carbonization occurs, and a control is performed so that the temperatures of the cooled heaters (3a, 3b, 3c, 3d, 3e) become uniform. It is thereby possible to prevent carbides from being produced in the thermoplastic resin in the heating cylinder (1).
Provided is an extraction device that, when extracting a plate-shaped resin molded article such as a light guide plate by means of suction, can suppress the resin molded article from deforming. The extraction device (1), which suctions a light guide plate (2) that is a resin molded article molded in a die and then extracts the light guide plate (2) from the die, is provided with a single suction body (3), which contacts the light guide plate (2), and a vacuum pump (4), which generates negative pressure when suctioning and holding the light guide plate (2) contacted to the suction body (3), and the suction body (3) comprises an interconnected porous body having elasticity. It is possible to suction across one entire surface of the light guide plate (2) by means of the suction body (3), and so it is possible to prevent deformation even if the light guide plate (2) is relatively thin.
B29C 45/42 - Removing or ejecting moulded articles using means movable from outside the mould between mould parts
B29C 33/44 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
The problem addressed by the invention is to keep a vertical injection molding machine from rising with the injection-filling of the molten resin even when same is performed at high speed. The vertical injection molding machine is configured so as to satisfy the mathematical expression (m+M)/2 > m + m×V/t/9.8 when: a pusher plate (6), which is advanced or retracted when a molding is molded by operating the vertical injection molding machine, and a member held integrally on the pusher plate (6) are the moving bodies, and the total weight thereof is the moving body weight m (kg); a front plate (5), which does not move when a molding is molded by operating the vertical injection molding machine, and a member held integrally on the front plate (5) are the stationary bodies, and the total weight thereof is the stationary body weight M (kg); the acceleration time for the injection screw when a molding is molded by operating the vertical injection molding machine is t (s); and the velocity after the acceleration time t (s) for the injection screw when a molding is molded by operating the vertical injection molding machine is V (m/s).
Provided is an extraction device that can prevent a resin molded article such as a light guide plate from deforming when extracting the resin molded article by means of suctioning. In the extraction device (51), which suctions the light guide plate (52), which is the resin molded article molded in a die, by means of a suctioning body (53) to extract the light guide plate (52) from the die, the suctioning body (53) is provided with a high-density pore disposed region (H) at which a plurality of pores (59a) are disposed at a high density, and a low-density pore disposed region (L) at which a plurality of pores (59b) are disposed at a low density having a coarser density than the plurality of pores (59a) of the high-density pore disposed region (H).
B29C 45/42 - Removing or ejecting moulded articles using means movable from outside the mould between mould parts
B29C 33/44 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
Provided is a molding machine safety device, which does not easily generate abrasion powder or noise and which is very durable and quiet. The mechanical safety device for molding machines is configured from: a safety bar (21) that is disposed parallel to the direction in which a stationary plate (11) and a movable plate (12) are arranged; and a stopper (22), which is attached to the movable plate (12) and which engages with the safety bar (21) when the safety door (5) is open and is disengaged from the safety bar (21) when the safety door (5) is closed. The safety bar (21) is configured from a main body (27) on which multiple fixed teeth (26) for engaging with the stopper (22) are formed in the longitudinal direction, and an eccentric shaft (28) provided on an end of the main body (27).
B22D 17/26 - Mechanisms or devices for locking or opening dies
F16P 3/08 - Safety devices acting in conjunction with the control or operation of a machineControl arrangements requiring the simultaneous use of two or more parts of the body in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
77.
METHOD OF CONTROLLING PRESSURE-MAINTAINING STEP FOR INJECTION-MOLDING MACHINE
Provided is a method of controlling a pressure-maintaining step for an injection-molding machine capable of molding a high quality molded body, pressure control in a pressure maintaining step executed after an injection step being performed with high precision. A control method in an injection molding machine in which there are performed an injection-filling step for advancing a screw and injecting molten resin to fill a die cavity and a pressure maintaining step for retracting the screw and reducing the pressure, wherein a switch is made to the pressure maintaining step after injection filling has concluded in the injection filling step, the screw is rapidly retracted by reducing a primary pressure through pressure control in a primary pressure maintaining step which is the initial stage after the switch to the pressure maintaining step has been made, and pressure reduction is controlled so that the reduced primary pressure reaches in a short time a set pressure for a secondary pressure maintaining step performed after the primary pressure maintaining step.
[Problem] To provide an ejection device, which has excellent maintainability, for a molding machine. [Solution] The ejection device is constituted from: a guide rail (8) affixed to the a movable die plate (7); an extrusion plate (5) that is guided by the guide rail (8) and moves backward and forward; extrusion pins (6) affixed to the extrusion plate (5); an electric motor (1) for ejection that is a drive source for the extrusion plate (5); ball screw mechanisms (2, 3) that convert the rotational motion of the motor (1) to the back and forth movement of the extrusion plate (5); and power transmission mechanisms (14, 15, 16) that transmit the rotational motion of the motor (1) to the rotating parts (2) of the ball screw mechanisms. The motor (1), power transmission mechanisms (14, 15, 16), and direct advance parts (2) of the ball screw mechanisms are affixed to the extrusion plate (5), and one end of each extrusion pin (6) is fastened by a nut (21) on the back surface side of the extrusion plate (5) when viewed from the movable die plate (7). The guide rail (8) is set to a length in which the leading end thereof does not protrude from the back surface side of the extrusion plate (5) when the extrusion plate (5) is moved back to the rearmost limit.
Provided is an injection molding machine that detects foreign bodies between the metal molds during a low pressure mold-closing process that is performed before a high pressure mold-closing process, and if such a problem occurs, can promptly stop the metal mold closure action of the servo motor at a stage prior to when the high pressure mold-closing process is performed. The injection molding machine (1): is provided with a servo motor (17) that performs the metal mold-opening and -closing, and a torque-detecting means (23) for detecting the actual torque of the servo motor (17); and drives the servo motor (17), performing as mold-closing processes, in order, a high speed mold-closing process, a low pressure mold-closing process and a high pressure mold-closing process. The injection molding machine (1) is provided with: a malfunction-determining means (25) for determining that a foreign body is present between the metal molds when the actual torque (x) of the servo motor (17) that is generated during the open mold side of the low pressure mold-closing process deviates from a previously established range of normal values; and a servo motor-stopping means (26) for emergency stopping of the driving of the servo motor (17) when the malfunction-determining means (25) determines that a foreign body is present.
Provided is a screw injection device that can be implemented at low cost and in which galling and seizing are not prone to occur on the outer surface of the check ring and the inner surface of the heating cylinder. A screw (8) is constituted from a screw body (31) on which a helical groove (8a) is formed, and a screw head (33) that is fixed on the tip of the screw body (31) via a small-diameter neck (32). A backflow-preventing device (40) is constituted from a check seat (41) that is fixed on the end of the screw body (31) toward the screw head attachment side, and a check ring (42) that is mounted on the neck (32) so as to be capable of rotating and moving forward and backward. On the end face of the screw head (33) on the check ring (42) side, multiple loose ball-fitting grooves (44) that have a deep groove section (44a) and a shallow groove section (44b) are formed. Balls (43) are accommodated in the respective loose ball-fitting grooves (44) so as to be capable of rolling, and are disposed between the screw head (33) and the check ring (42).
The present invention makes it possible to easily ascertain whether an abnormality is present at any location of a hoop member by which a resin part is insert-molded. An injection-molding machine comprises: an elongated hoop member (4) by which a resin part is insert-molded by packing a molten resin into a closed die in a state sandwiched between dies; a molding conditions detection sensor (31) for detecting that there is an abnormality when a predetermined condition during insert molding has departed from the predetermined condition; and a hoop member operating distance detection sensor (32) for detecting the position of the hoop member (4)by which a resin part(35) is insert-molded, when an abnormality has been detected by the molding conditions detection sensor (31). When a departure from the predetermined condition has happened, the molding conditions detection sensor (31) detects that an abnormality has occurred on the basis thereof, and the hoop member operating distance detection sensor (32) detects the position of the hoop member (4) by which the resin part (35) has been insert-molded when the abnormality occurred.
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
82.
MOLDING MACHINE AND SCREEN DISPLAY SWITCHING CONTROL METHOD FOR MOLDING MACHINE
The purpose of the present invention is to enable the display to be automatically switched to a screen having a high frequency of use and matching the purpose of a user. An operation setting screen (20) is displayed on a display unit (10) for five minutes, which is a predetermined time period, and, after five minutes has passed, the display of the operation setting screen (20) is switched to display of an operation process screen (21), and the operation process screen (21) displayed by the switching transitions to a blank display screen in a standby mode after five minutes, which is a predetermined time period, has passed. In the state where the blank display screen (22) is displayed, when a touch operation is performed on the screen, the display is switched from the blank display screen (22) to the operation setting screen (20) which has a high frequency of use. By displaying the operation setting screen (20) having a high frequency of use on the display unit (10) automatically, it is possible to improve convenience.
Provided is a method for assessing wear whereby the wear status can be determined without the need to take out a screw in the assembly of an injection molding machine. A first chromium mass concentration (C) and a first reference mass concentration (A) are extracted from a first test substance made by adding a predetermined amount of calcium to a predetermined amount of pellets, which are a raw material for molding a molded body; a reference value (X) is calculated on the basis thereof. A second chromium mass concentration (C') and a second reference mass concentration (A') are extracted from a second test substance made by adding, to a predetermined amount of the substance contained in the molded body, an amount of calcium identical to the amount added to the pellets; a comparative value (X') is calculated on the basis thereof. A screw (3) can be determined to have wear whenever the comparative value (X') is not less than a numerical value 60 times that of the reference value (X), whereas the screw (3) can be determined not to have wear whenever the comparative value is less than a numerical value 60 times that of the reference value (X); it is therefore possible to determine and assess wear without the need to confirm by taking out the screw (3).
Provided is a vertical injection molding machine capable of avoiding that components such as an injection drive unit configuring the injection screw do not fall due to the weight of the said components. This vertical injection molding machine is provided with an electric servo motor (10) which raises the injection drive unit (15) accompanying rotation of a driven pulley (13) via a ball and screw mechanism (14), a timing belt (12) by which the drive force of the electric servo motor (10) is transmitted, and the driven pulley (13) on which the timing belt (12) is rotated. An arc groove (28) is formed on the driven pulley (13) in the circumferential direction thereof, and a protruding pin (26) is provided which is inserted into the arc groove (28) of the driven pulley (13) when the timing belt (12) is disconnected. When the protruding pin (26) is inserted into the arc groove (28), the tip of the protruding pin (26) applies pressure on an inclined portion (29) of the bottom surface of the arc groove (28) by means of the elastic force of a spring (25), slowing the rotational speed of the driven pulley (13) and stopping the injection drive unit (15) by an inner wall surface (30) of the slowed driven pulley (13) colliding with the protruding pin (26).
[Problem] To provide an electrically driven injection device for a die-cast machine capable of performing a requisite high-speed injection step using a small electric servo motor. [Solution] The invention is provided with a first injection electric motor (1) used for low-speed injection and increasing pressure, a second injection electric motor (2) used for high-speed injection, first and second power transmission mechanisms (4, 5) for transmitting rotary motion of the injection electric motors (1, 2) to a screw shaft (3a), first and second clutch mechanisms (6, 7) provided in the power transmission mechanisms (4, 5), an injection plunger (9) advanced and withdrawn integrally with respect to a nut (3b) threaded on the screw shaft (3a), and a controller (11) for controlling the driving of the injection electric motors (1, 2) and the clutch mechanisms (6, 7). The controller (11) starts the second injection electric motor (2) from a stopped state before the point in time where the high-speed injection step is to commence; and switches the second clutch mechanism (7) from a disengaged state to an engaged state at the point in time where the high-speed injection step is to commence, or at a requisite timing prior thereto.
Provided is a molding condition diagnostic device that diagnoses the suitability of a molding condition pre-set using a measured value detected during continuous automatic operation, and that is capable of informing an operator of such diagnosis. A molding machine is provided with a molding condition diagnostic device (1) that determines the suitability of a molding condition pre-set value and informs the operator of such determination. The molding condition diagnostic device (1) comprises the following: an input unit (2) that receives the measured value output from a measuring means (11) and the molding condition pre-set value set by a molding condition setting means (30); a comparison unit (3) that compares the measured value entered into the input unit (2) with the molding condition pre-set value; a storage unit (4) that stores the determination criteria for determining if the molding condition pre-set value is unsuitable; and a determination unit (5) that determines whether the comparison results from the comparison unit (3) satisfy the determination criteria stored in the storage unit (4). When the determination unit (5) has determined that the comparison results from the comparison unit (3) satisfy the determination criteria stored in the storage unit (4), the determination unit (5) outputs to a monitor unit (6) a unique determination display that corresponds to the compared measured value and molding condition pre-set value.
Provided are a heating sleeve exchange method and tool which are generally applicable to existing vertical injection molding machines, and by which even a non-expert can easily and efficiently attach/remove a plasticization unit. At the time of an attachment/removal operation of a heating sleeve (6a) to/from a heating sleeve holding plate (4), a control device (21) functions to display an attachment/removal procedure of the heating sleeve (6b) to/from the heating sleeve holding plate (4) on a display device (22), the procedure including a drive procedure of an electrically driven servo motor for a nozzle touch, an attachment/removal procedure of a heating sleeve exchange tool (30) to/from a die plate (2), a holding procedure of the heating sleeve (6a) by the heating sleeve exchange tool (30), and a transfer procedure of the heating sleeve (6a) held by the heating sleeve exchange tool. An operator performs attachment/removal of the heating sleeve (6a) to/from the heating sleeve holding plate (4) in accordance with the attachment/removal procedure displayed on the display device (22).
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
B29C 45/46 - Means for plasticising or homogenising the moulding material or forcing it into the mould
88.
DIE-CASTING MACHINE AND METHOD FOR DETECTING DIE-CASTING MACHINE ABNORMALITIES
Provided is a die-casting machine that can accurately detect the sliding resistance of an injection plunger in an injection sleeve with high precision and from which can be obtained high quality casting products. Also provided is a method for detecting die-casting machine abnormalities. The die-casting machine is provided with a cylindrical injection sleeve (18) supplied with molten metal and an injection plunger tip (15a) attached to an injection plunger (15) that moves back and forth in the injection sleeve (18). The die-casting machine uses at least an electrically driven servo motor (9) in a drive source for an injection step where the molten metal is injected and fills a cavity of a closed metal mold by the forward motion of the injection plunger (15). A torque detection means (32) that detects the torque of the electrically driven servo motor (9) that moves the injection plunger (15) forward and an abnormality detection means (33) that determines that an abnormality has occurred in the forward operation of the injection plunger (15) when a measured value detected by the torque detection means (32) is a value that exceeds a preset threshold value are provided.
B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
89.
ELECTRIC DIE-CASTING MACHINE WITH CORE-DRIVING HYDRAULIC UNIT
[Problem] To provide an electric die-casting machine equipped with a core-driving hydraulic unit, the electric die-casting machine being configured in a manner such that, although the electric die-casting machine is equipped with the hydraulic unit, the electric die-casting machine does not require a large installation area and the maintainability of the electric die-casting machine is not compromised. [Solution] A suitable core-driving hydraulic unit (31) is configured by integrating together an oil tank (33), a hydraulic pump (34), a hydraulic pump-driving motor (35), an accumulator (36), an oil cooler (37), valves (38) including a solenoid directional control valve, an oil cleaner (39), an electric box (40), etc. in such a manner that such components are disposed on a base plate (32) doubling as an oil pan. The core-driving hydraulic unit (31) is affixed to a predetermined position on a main base board (2) in such a manner that the hydraulic pump (34) and the hydraulic pump-driving motor (35) are located below a mold-clamping electric servomotor (22) and the remaining components are located at a side of the mold-clamping electric servomotor (22).
Allow preventing a belt for transmitting a driving force of an injection driving motor from being damaged or breaking even when a comparatively large load is applied thereto. A motor drive transmission belt (23) is looped on drive transmission pulleys (22a, 22b, 22c) which are anchored to each of three injection driving motors (8a, 8b, 8c), and a drive transmission belt tension idler (25) is disposed which presses on the motor drive transmission belt (23) and applies tension from the inner side to the outer side of the motor drive transmission belt (23). When the three injection driving motors (8a, 8b, 8c) are driving simultaneously, the parts of the motor drive transmission belt (23) which pass near each of the drive transmission pulleys (22a, 22b, 22c) and the drive transmission belt tension idler (25) are driven in a mountain fold state, and it is thus possible to lighten the load on the motor drive transmission belt (23) when the motor drive transmission belt (23) is being rotated at high speed.
Disclosed is a method by which viscosity measurement and viscosity adjustment of a molten resin to be used for injection molding in an injection molding machine can be automatically performed. During an automatic operation for forming a molded product, a number of shot counting means (17) counts the number of shots for injecting a molten resin from an injection nozzle (3). When the counted number of shots reaches a preset predetermined numerical value, the viscosity of the molten resin injected from the injection nozzle (3) is automatically calculated. If the calculated viscosity of the molten resin is not in a predetermined resin viscosity range, a temperature control means (15) changes the temperature setting of a heating heater (10) to adjust the viscosity of the molten resin within the predetermined resin viscosity range. Thereafter, an automatic operation to repeat molding of molded products is restarted. Accordingly, during the automatic operation for continuously producing molded products by the injection molding machine, the viscosity measurement and the viscosity adjustment of the molten resin can be automatically performed.
Provided is an easy-to-use molding machine wherein even an unskilled person can easily set molding conditions. A microcomputer unit (20) for performing drive control of a molding machine stores molding navigation. When the molding navigation is activated, a plurality of setting screens required for setting molding conditions are displayed in a predetermined sequence on a display unit, and in each of the displayed setting screens, a setting item display section to which the setting conditions are to be input is displayed in a color from different the surrounding. An operator inputs a predetermined setting value in the displayed sequence in the setting item display section displayed in the color different from the surrounding. Thereby, the setting of the molding conditions can be completed. Accordingly, without requiring a special skill, all molding conditions required for operating the molding machine can be set, and the setting of the molding conditions can be performed highly effectively and reliably.
Disclosed is an injection molding machine provided with a tubular heating cylinder (10) wherein a screw (12) is provided on the inside of the cylinder and a heater (16) is attached on the outer periphery of the cylinder, an injection nozzle (11) attached at the tip of the heating cylinder (10) to inject a molten resin to a cavity of a die, and a double cover surrounding the outer side of the heating cylinder (10), wherein the double cover comprises a heat-retention cover (19) and a heat-shield cover (25) provided on the outer side of the heat-retention cover, a heat-retention cover attachment portion (18) having an end attached to a heat-retention cover inclination portion (22) where the heat-retention cover (19) is jointed to the heating cylinder (10) is arranged at a lower position than a heat-shield cover attachment portion (27) formed on a heat-shield cover vertical-face portion (26) where the heat-shield cover (25) is jointed to the heat-retention cover (19). By arranging the heat-shield cover attachment portion (27) at a low position to which conductive heat of the heating cylinder (10) is hardly transmitted when the entirety of the heating cylinder (10) is heated to a high temperature, the heat-shield cover (25) can be prevented from being raised to a high temperature.
a) caused by driving of the injection hydraulic cylinder (5) may be pattern-controlled to follow a preset speed command pattern while the rotational speed of the injection electric servomotor (3) is feedback-controlled with the addition signal.
A hydraulic circuit of an injection cylinder in a die casting apparatus which can achieve switching between in-drawing and out-drawing instantaneously by one circuit and can produce a high-quality molded product. A hydraulic circuit (10) comprises a first pressure oil channel (30) for supplying a pressure oil to an injection cylinder (C), a second pressure oil channel (32) for returning the pressure oil from the injection cylinder (C), a first flow control valve (34) for controlling the flow rate of the pressure oil flowing through the first pressure oil channel (30), a second flow control valve (36) for controlling the flow rate of the pressure oil flowing through the second pressure oil channel (32), a bypass pressure oil channel (38) connected with the second pressure oil channel (32) in order to bypass the second flow control valve (36), a bypass opening/closing valve (40) fixed to the bypass pressure oil channel (38) and opening/closing the bypass pressure oil channel (38) by using the pressure oil as a pilot signal, and a control means (44) for controlling the operation of each valve.
A method of manufacturing a light guide plate capable of enhancing productivity by automating conventional manual operations. A transparent plate (B) is formed using a cavity formed by the fixed die (10) and the movable die (8) of an injection molding machine (1). The plate (B) attached to the inside of the cavity is discharged, and sucked and removed by a removal device (3). The removed plate (B) is placed on a first protective sheet (20) let out from a first sheet roll (22) after being placed on the upper surface of the first protective sheet (20) at a predetermined loading position (b) by the removal device (3). A second protective sheet (21) let out from a second sheet roll (23) is placed on the upper surface of the conveyed plate (B). After the first protective sheet (20) and the second protective sheet (21) are pasted on the respective surfaces of the plate (B), the plate (B) on which the first protective sheet (20) and the second protective sheet (21) are pasted is cut into pieces of predetermined sizes by the cutting blade (31) of a cutting device (27) for automatically manufacturing the light guide plate.
Disclosed is a large-sized electric forming machine, which has a simple constitution and can be executed inexpensively and easily. First and second injecting electric servomotors (13 and 14) are exemplified by three-phase motors of plural windings. With the individual injecting electric servo motors (13 and 14), there are connected servo amplifiers (5A to 5D) and inverters (6A to 6D) of a number corresponding to the winding counts of the motors. One of the servo amplifiers (5A to 5D) is a master servo amplifier, and the others are slave servo amplifiers. Any of the injecting electric servo motors is equipped with an encoder for detecting the rotational direction and quantity of that servo motor, and the output signal of the encoder is fed to the individual servo amplifiers (5A to 5D).
Disclosed is a die-casting machine which is provided with an electric servomotor and a hydraulic cylinder as an injecting drive source and which is enhanced in action stability in an injection process. In the injection process, the rotation speed of an injecting electric servomotor (3) is pattern-controlled to follow a preset speed command pattern, and the forward speed of a piston (5a) by the drive of an injecting hydraulic cylinder (5) is subjected to a feedback control with an added signal of the forward speed of the piston (5a) by the drive of the injecting electric servomotor (3) and the forward speed of the piston (5a) by the drive of the injecting hydraulic cylinder (5). Moreover, the forward speed of the piston (5a) by the drive of injecting hydraulic cylinder (5) can also be so pattern-controlled as to follow the preset speed command pattern, and the rotation speed of the injecting electric servomotor (3) can also be feedback-controlled with the added signal.
An electric die cast machine achieving high injection speed and high boost pressure. An injection device (100) is provided with an electric servomotor (104) for injection of first stage, a ball screw mechanism (110) (motion converting mechanisms of first stage) for converting rotational motion of the electric servomotor for injection of first stage into rectilinear motion of a linear motion body (106), electric servomotors (111, 112) for injection of second stage, mounted on the linear motion body, crank mechanisms (113, 116) ( motion converting mechanisms for second stage) for converting rotational motion of the electric motor for injection of second stage into rectilinear motion of an injection plunger (118), and a control device (400) for controlling drive of each electric servomotor for injection. In a low speed injection step, the control device singly drives separately only the electric servomotor (104) for injection of first stage, and, in a high-speed injection step and a pressure boosting step, the control device simultaneously drives both the electric servomotor (104) for injection of first stage and the electric servomotors (111, 112) for injection of second stage.
An inline screw type injection molding machine having an injection mechanism and a metering mechanism which have simplified structures. The injection molding machine comprises a metering motor (9) for rotationally driving the rear end side of a screw, a screw mechanism for converting rotational motion of a nut body rotating integrally with the screw and of a screw shaft fitted to the nut body into linear motion of the screw via the nut body, an injection motor (16) for rotationally driving the screw shaft, an injection motor drive circuit for driving the injection motor (16) such that the position of the screw follows a position command pattern previously set, a metering motor drive circuit for driving the metering motor (9) such that rotation of the metering motor (9) follows a speed setting pattern previously set, and an adder-subtractor circuit which, by adding or subtracting a speed setting pattern signal of the metering motor drive circuit to or from a speed command signal of the injection motor drive circuit, compensates displacement of the axial position of the screw which displacement occurs as the metering motor (9) rotates.
