An edge gate hotrunner apparatus comprising: a nozzle body comprising an upstream portion and a downstream portion, the downstream portion comprising a plurality of lobes each independently displaceable, the lobes and the upstream portion forming an integral body, the nozzle body defining a network of channels for conveying a molten material; a plurality of tip assemblies, each tip assembly in fluid communication with a respective lobe; and a cone shaped member received in a space partially defined by the lobes, such that displacing the cone shaped member upstream within the space urges the lobes in a direction away from the cone shaped member.
A nozzle for use in a hotrunner apparatus, the nozzle comprising: a body defining a nozzle channel comprising a downstream end, the nozzle channel for conveying a molten material; a tip; a sleeve; and a retainer, all coupled to the downstream end; the tip slideably received and axially slideable in the sleeve, the tip defining a tip channel in fluid communication with the nozzle channel, the tip channel comprising an opening near a downstream end of the tip for dispensing the molten material from the nozzle, the sleeve slideably received in the retainer, and the retainer coupling the tip and the sleeve to the body.
Valve assemblies according to the present disclosure include a channel with a channel proximal end and a channel distal end. The valve assemblies also include and an inlet that receives a nozzle at an inlet proximal end that injects a molten plastic into the channel. The inlet includes a first inlet surface at an inlet distal end fluidly coupled to the channel. The valve assemblies further include a valve translatably coupled to the channel and the valve translates between an open position and a closed position. The valve includes a valve proximal end, a valve distal end, and a first valve surface at the valve proximal end. A diameter seal is formed between the first inlet surface of the inlet and the first valve surface of the valve when the valve is translated from the open position to the closed position.
Valve assemblies according to the present disclosure include a channel with a channel proximal end and a channel distal end. The valve assemblies also include and an inlet that receives a nozzle at an inlet proximal end that injects a molten plastic into the channel. The inlet includes a first inlet surface at an inlet distal end fluidly coupled to the channel. The valve assemblies further include a valve translatably coupled to the channel and the valve translates between an open position and a closed position. The valve includes a valve proximal end, a valve distal end, and a first valve surface at the valve proximal end. A diameter seal is formed between the first inlet surface of the inlet and the first valve surface of the valve when the valve is translated from the open position to the closed position.
An apparatus for injecting a molten material including an injector, a rail, a bell crank, and a frame supporting the injector via the rail for guiding the linear translation of the injector along the frame. The apparatus includes a first guide and a second guide slideably coupled to the rail, the second guide attached to the injector and spaced from the first guide along the rail, and a bell crank coupled to the first guide and second guide to provide a load-balancing mechanism.
A hot runner system includes a manifold having a heater and a manifold channel network extending between a manifold inlet and a plurality of manifold outlets for distributing a molten plastic. A nozzle seated against the manifold and received in a respective manifold outlet has an extension portion received in the respective manifold outlet, a body portion projecting downstream from the extension portion, and a nozzle channel extending through the extension portion and the body portion. The hot runner system further includes a nozzle support seated against the nozzle, the nozzle support including an upstream nozzle support and a downstream nozzle support, the downstream nozzle support is discrete from and in slidable contact with the upstream nozzle support, and the downstream nozzle support having a looser fit with the body portion of the nozzle than that of the upstream nozzle support's fit with the body portion of the nozzle.
An apparatus for injecting a molten material including an injector, a rail, a bell crank, and a frame supporting the injector via the rail for guiding the linear translation of the injector along the frame. The apparatus includes a first guide and a second guide slideably coupled to the rail, the second guide attached to the injector and spaced from the first guide along the rail, and a bell crank coupled to the first guide and second guide to provide a load-balancing mechanism.
A hot runner system having a nozzle and a manifold seated against the nozzle. An actuator plate is spaced apart from the manifold by a support pad which surrounds a lower mouth of an actuator bore that extends through the actuator plate. A valve pin extends through the support pad and the manifold to a downstream end of the nozzle. A cylinder is received in the actuator bore from a rearward side of the actuator plate and a piston coupled to the valve pin is received in the cylinder from a forward end of the cylinder.
Disclosed is a side-gate nozzle having a nozzle body, a nozzle tip and a transfer member. The nozzle body includes a heater, a longitudinally extending nozzle channel, and a bore extending from an exterior side wall of the nozzle body to the nozzle channel. The nozzle tip includes a tip member, a tip channel extending therethrough and a sealing member surrounding the tip member and in which the tip member is received. The transfer member seats against a step in the bore in the nozzle body and includes a bearing surface against which the nozzle tip is slidably seated and a transfer channel extending therethrough in fluid communication between the nozzle channel and the tip channel. In operation thermal expansion of the transfer member along its length applies a sealing force against the nozzle tip.
A hot runner system comprising: a manifold having a heater and a manifold channel network extending between a manifold inlet and a plurality of manifold outlets, the manifold channel network for distributing a molten plastic: a nozzle seated against the manifold and received in a respective manifold outlet, the nozzle having an extension portion, a body portion, and a nozzle channel extending through the extension portion and the body portion; and a nozzle support seated against the nozzle, the nozzle support including an upstream nozzle support and a downstream nozzle support, the downstream nozzle support is discrete from and in slidable contact with the upstream nozzle support, and the downstream nozzle support having a looser fit with the body portion of the nozzle than that of the upstream nozzle support's fit with the body portion of the nozzle.
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
An injection molding apparatus having a valve pin plate coupling at least one valve pin to an actuator which, in operation, axially moves the valve pin plate between a closed position and an open position. The valve pin is coupled to the valve pin plate via a valve pin coupler. A biasing member is compressed against a support surface by the valve pin holder when the valve pin plate is in the closed position to create a supplementary coupling force coupling the valve pin to the valve pin holder.
An injection molding apparatus having a manifold, a nozzle in fluid communication with the manifold, a valve pin extending through the nozzle, and a valve plate assembly including a valve pin plate coupled to an actuator which moves the valve plate assembly between two positions, and a coupling shaft coupling the valve pin to the valve plate. A plurality of mold plates forms an enclosure in which the valve plate assembly is received, and one of the mold plates has an access passage having a sightline view of a proximal end of the coupling shaft when the valve pin plate is in an aligned position.
A sleeve heater for supplying heat to a melt delivery component of a hot runner system. The sleeve heater includes a tube-shaped body having an outer surface and an inner surface. The inner surface of the tube-shaped body defines an opening in which a melt delivery component is received. A heater wraps at least partially around the tube-shaped body and extends along a length of the tube-shaped body. A thermocouple groove is formed in the outer surface of the tube-shaped body. The thermocouple groove includes a lateral bend; and a bore that extends from the lateral bend into a thickness of the tube-shaped body. Together the bore and the latera bend maintain the position of a sensing end of a thermocouple installed therein relative to the tube-shaped body.
A molten plastic delivery system is disclosed having a nozzle defining a nozzle channel with a downstream nozzle channel opening. A valve pin is reciprocable within the nozzle channel between a closed position and an open position. The system includes a bell crank having first and second arms that are connected at and rotatable about a pivot. The first arm is coupled to the valve pin and the second arm is coupled to a push-pull cable such that angularly pushing the second arm about the pivot via the push-pull cable moves the valve pin to the open position and angularly pulling the second arm about the pivot via the push-pull cable moves the valve pin to the closed position.
A valve gating nozzle tip that is connectable to a hot runner nozzle is disclosed. The valve gating nozzle tip includes a valve pin guiding component having an attachment portion for connecting the nozzle tip to the hot runner nozzle, a skirt projecting downstream from the attachment portion, the skirt having an alignment ring sized to mate with an alignment bore in a mold cavity component, and a bore extending through the attachment portion. The bore defines an inner attachment portion of the valve pin guiding component and a melt passage portion of the valve pin guiding component. The melt passage portion has a valve pin aligner extending inward from the bore, the valve pin aligner includes a valve pin guiding surface concentric with the alignment ring.
An injection molding apparatus includes a mold assembly including a mold plate, a manifold, an actuator mounted on and upstream of the manifold, at least one nozzle coupled to and downstream of the manifold, and a valve pin having an upstream end coupled to the actuator and a downstream end opposite the upstream end distal from the actuator and received in the nozzle. The actuator includes a piston and an adjustment mechanism for adjusting an axial distance between the piston and the downstream end of the valve pin. The adjustment mechanism includes a valve pin holder coupling the valve pin to the piston. The valve pin holder is received in the piston and both having a shared axis of rotation and configured to prevent the valve pin holder from rotating about the shared axis.
B29C 48/20 - Articles comprenant au moins deux composants, p. ex. couches coextrudées les composants étant des couches une des couches étant une bande, p. ex. une bande partiellement intégrée
B29C 48/23 - Articles comprenant au moins deux composants, p. ex. couches coextrudées les composants étant des couches avec des moyens pour éviter l’adhésion des couches, p. ex. pour former des couches pelables
An apparatus for aligning an outlet of an injection unit with an inlet of a mold mounted between platens of a molding machine includes a positioning assembly interconnecting the injection unit to the molding machine. The positioning assembly includes a first translation assembly configured to engender a first movement of the injection unit outlet along a translation plane, and a second translation assembly configured to engender a second movement of the injection unit outlet along the translation plane. The positioning assembly further includes a brake assembly extending between the first translation assembly and the second translation assembly. The brake assembly is configured to selectively create a compressive force between the first and second translation assemblies to maintain the position of the injection unit outlet.
Disclosed is a side-gate nozzle having a nozzle body, a nozzle tip and a transfer member. The nozzle body includes a heater, a longitudinally extending nozzle channel, and a bore extending from an exterior side wall of the nozzle body to the nozzle channel. The nozzle tip includes a tip member, a tip channel extending therethrough and a sealing member surrounding the tip member and in which the tip member is received. The transfer member seats against a step in the bore in the nozzle body and includes a bearing surface against which the nozzle tip is slidably seated and a transfer channel extending therethrough in fluid communication between the nozzle channel and the tip channel. In operation thermal expansion of the transfer member along its length applies a sealing force against the nozzle tip.
A hot runner system having a nozzle received in a well in a mold plate. The nozzle has a melt channel, a nozzle body through which the melt channel extends, and a collar connected to and spaced apart from the nozzle body. A manifold is seated against the nozzle. The manifold has a melt channel in fluid communication between a source of moldable material and the nozzle channel. A bearing member against which a seating surface of the collar is supported is received in the well, and a biasing member is seated between a step in the well and the bearing member. The biasing member has plate loading surface and a nozzle loading surface. The nozzle loading surface and the plate loading surface are concentric with the seating surface of the collar and are circumferentially offset from the seating surface of the collar in opposite directions.
A valve-gating injection molding apparatus is disclosed. The valve gating injection molding apparatus has a manifold with a manifold channel extending therethrough and a nozzle coupled to the manifold and having a nozzle channel in fluid communication with the manifold channel. A valve pin extends across the manifold and through the nozzle channel. An actuator coupled to the valve pin for translating the valve pin between open and closed positions. A plurality of mold plates forming an enclosure to house the manifold, the plurality of mold plates defining an egress passageway through which the valve pin extends and a diversion chute that intersects the egress passageway at an angle.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
Manifolds, gates, nozzles, molds for the plastics molding, auxiliary injection units being parts of injection molding machines, for use in the manufacture of plastic parts. Control apparatus and software used for the purpose of monitoring and controlling the temperature of hot runners for injection molding machines. Heating and cooling apparatus used for heating and cooling of hot runners for injection molding machines.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
(1) Manifolds, gates, nozzles, molds for the plastics molding, auxiliary injection units being parts of injection molding machines, for use in the manufacture of plastic parts
(2) Programmable electronic data acquisition control apparatus and software used for the purpose of monitoring and controlling the temperature of hot runners for injection molding machines
(3) Heating and cooling apparatus used for heating and cooling of hot runners for injection molding machines
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
Parts for injection molding machines, namely, manifolds, gates, heaters, nozzles, and molds; auxiliary injection units being parts of injection molding machines, for use in the manufacture of plastic parts Electronic control apparatus and recorded industrial process control software used for the purpose of monitoring and controlling the temperature of hot runners for injection molding machines Heating and cooling apparatus in the nature of heating and cooling devices and heat sinks, for use in the heating and cooling of hot runners for injection molding machines
39.
SIDE-GATE INJECTION MOLDING APPARATUS AND SIDE-GATE NOZZLE ASSEMBLY
A side-gate injection molding apparatus and a side-gate nozzle assembly are disclosed. The side-gate nozzle assembly delivers moldable material to a cavity insert that is beside the side-gate nozzle assembly. The side-gate nozzle assembly includes a nozzle body having a nozzle flow channel and a widthwise slot extending across a downstream side of the nozzle body. The nozzle flow channel has an outlet that ends at a wall of the slot. A load component is received in the slot and has a load component flow channel in fluid communication between the nozzle body outlet and an outlet at an end of the load component. A side-gate tip assembly is adjacent to the end of the load component and is in fluid communication between the load component flow channel and the cavity insert. In operation, thermal expansion of the load component presses the side-gate tip assembly towards the cavity insert.
A side-gate injection molding apparatus and a side-gate nozzle assembly are disclosed. The side-gate nozzle assembly delivers moldable material to a cavity insert that is beside the side-gate nozzle assembly. The side-gate nozzle assembly includes a nozzle body having a nozzle flow channel and a widthwise slot extending across a downstream side of the nozzle body. The nozzle flow channel has an outlet that ends at a wall of the slot. A load component is received in the slot and has a load component flow channel in fluid communication between the nozzle body outlet and an outlet at an end of the load component. A side-gate tip assembly is adjacent to the end of the load component and is in fluid communication between the load component flow channel and the cavity insert. In operation, thermal expansion of the load component presses the side-gate tip assembly towards the cavity insert.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
Control apparatus and software used for the purpose of monitoring and controlling the temperature of hot runners for injection molding machines. Heating and cooling apparatus used for heating and cooling of hot runners for injection molding machines.
A melt delivery body is disclosed for an injection molding apparatus. The melt delivery body includes a manifold, housed in a manifold plate, having a melt network with an inlet for receiving melt from a machine nozzle and an outlet substantially axially aligned with the inlet. The melt delivery body further including an in-line valve gated nozzle having a nozzle melt channel, a valve pin in the nozzle melt channel, and a valve pin actuator coupled to the valve pin and positioned substantially axially aligned with the in-line valve gated nozzle and between the manifold and the in-line valve gated nozzle for controlling the movement of the valve pin within the nozzle melt channel. The melt delivery body further including a biasing member for biasing the in-line valve gated nozzle towards the manifold.
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
An injection molding apparatus includes an injection unit; a clamping unit; a mold assembly including a mold plate, a manifold, an actuator mounted on and upstream of the manifold, and at least one nozzle coupled to and downstream of the manifold, the actuator for reciprocating a valve pin between an open position allowing a melt to pass through the nozzle and a closed position preventing the melt from passing through the nozzle, the mold assembly further including a biasing mechanism biasing the actuator upstream towards the mold plate.
An apparatus for aligning an outlet of an injection unit with an inlet of a mold mounted between platens of a molding machine includes a positioning assembly interconnecting the injection unit to the molding machine. The positioning assembly includes a first translation assembly configured to engender a first movement of the injection unit outlet along a translation plane, and a second translation assembly configured to engender a second movement of the injection unit outlet along the translation plane. The positioning assembly further includes a brake assembly extending between the first translation assembly and the second translation assembly. The brake assembly is configured to selectively create a compressive force between the first and second translation assemblies to maintain the position of the injection unit outlet.
A liquid injection molding apparatus is provided. The liquid injection molding apparatus comprises a mold assembly; a clamping unit; an injector including a barrel; a feed screw concentrically located in the barrel; and a motor having a drive shaft removably coupled to the feed screw via a bayonet connector.
An injector for injecting moldable liquid is provided. The injector comprises a barrel; a feed screw concentrically located in the barrel; and a motor having a drive shaft removably coupled to the feed screw via a bayonet connector.
A hot runner nozzle tip and hot runner nozzle tip components are disclosed, the nozzle tip, and the assembled tip components, form a channel that has a first annular segment that has a cross-sectional area that increases in size away from a tip inlet, and a second annular segment that extends from the first annular channel segment. A hot runner tip assembly is also disclosed. The hot runner tip assembly includes a tip component having an attachment portion, an extension portion that projects from the attachment portion, and a bore that extends therethrough. A sleeve having a rib that extends outward therefrom surrounds the extension portion. The sleeve contacts the tip component at a first contact area and at a second contact area so as to create a void therebetween, and the first and second contact areas are offset from the rib.
A preform molding system is disclosed that includes a cavity half that is mountable to a stationary platen of an injection molding machine and a core half that is mountable to a moving platen of the injection molding machine. The preform molding system includes a mold stack assembly having a cavity portion and a core portion. The cavity portion is coupled to the cavity half and includes a cavity insert, and the core portion is coupled to the core half and includes a core insert, a pair of neck rings, and a stripper ring. The core insert has an undercut that defines an annular protrusion on an internal surface of a preform that is created in the mold stack assembly. The preform molding system is configured to permit in sequence, retraction of the pair of neck rings away from the core insert and ejection of the preform from the core insert via the stripper ring.
B29C 45/44 - Démoulage ou éjection des objets formés d'objets à contre-dépouille
B29C 33/44 - Moules ou noyauxLeurs détails ou accessoires comportant des moyens ou conçus spécialement pour faciliter le démoulage d'objets, p. ex. des objets à contre-dépouille
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
B29K 105/00 - Présentation, forme ou état de la matière moulée
B29C 45/40 - Démoulage ou éjection des objets formés
An edge-gated injection molding apparatus is disclosed having an injection manifold assembly for distributing a melt stream of moldable material to a plurality of mold cavities aligned on opposing sides of the injection manifold assembly. The injection manifold assembly includes a plurality of melt outlets with each melt outlet being in fluid communication with a respective mold cavity, and a plurality of biasing components disposed along a centerline of the injection manifold assembly. A nozzle seal is disposed between each injection manifold assembly melt outlet and its corresponding mold cavity, with an upstream end of the nozzle seal being slidably disposed against its respective melt outlet. Each biasing component is disposed between a pair of melt outlets and corresponding nozzle seals for biasing the melt outlets and nozzle seals outward from the centerline of the injection manifold assembly toward their respective mold cavities and applying a preload thereto.
An apparatus for aligning an outlet of an injection unit with an inlet of a mold mounted between platens of a molding machine includes a positioning assembly interconnecting the injection unit to the molding machine. The positioning assembly includes a first translation assembly configured to engender a first movement of the injection unit outlet along a translation plane, and a second translation assembly configured to engender a second movement of the injection unit outlet along the translation plane. The positioning assembly further includes a brake assembly extending between the first translation assembly and the second translation assembly. The brake assembly is configured to selectively create a compressive force between the first and second translation assemblies to maintain the position of the injection unit outlet.
A linear actuator for use in an injection molding apparatus is provided. The linear actuator comprises an electric motor including a drive shaft; an anti-rotation mechanism including a restrictor and a captive member, the captive member attached to the pin, the restrictor and the captive member arranged for translating a rotational motion of the drive shaft to a linear motion of the captive member, and by extension the pin, relative to the restrictor; and an adapter coupling the drive shaft with the captive member to enable the drive shaft to transmit the rotational motion of the drive shaft and to be readily decoupleable from the captive member without needing to separate the captive member from the pin.
A hot runner nozzle tip and hot runner nozzle tip components are disclosed, the nozzle tip, and the assembled tip components, form a channel that has a first annular segment that has a cross-sectional area that increases in size away from a tip inlet, and a second annular segment that extends from the first annular channel segment. A hot runner tip assembly is also disclosed. The hot runner tip assembly includes a tip component having an attachment portion, an extension portion that projects from the attachment portion, and a bore that extends therethrough. A sleeve having a rib that extends outward therefrom surrounds the extension portion. The sleeve contacts the tip component at a first contact area and at a second contact area so as to create a void therebetween, and the first and second contact areas are offset from the rib.
A post mold cooling system for cooling preforms is disclosed. The post mold cooling system includes a take-out device that is configured to remove preforms from a molding area and deliver them to a post mold cooling area, and a cooling station that is configured to cool the preforms. A first transfer device is configured to transfer the preforms between the take-out device and the cooling station, and a second transfer device is configured to transfer the preforms away from the cooling station.
B28B 7/08 - Moules pourvus de moyens de basculement ou de renversement
B28B 7/42 - MoulesNoyauxMandrins caractérisés par des moyens pour modifier les propriétés du matériau de moulage pour le chauffage ou le refroidissement, p. ex. enveloppe à circulation de vapeur
B29B 11/04 - Fabrication de préformes par assemblage de matière préformée
B29B 11/06 - Fabrication de préformes par moulage de matière
B29B 13/04 - Conditionnement ou traitement physique de la matière à façonner par refroidissement
A preform molding system is disclosed that includes a cavity half that is mountable to a stationary platen of an injection molding machine and a core half that is mountable to a moving platen of the injection molding machine. The preform molding system includes a mold stack assembly having a cavity portion and a core portion. The cavity portion is coupled to the cavity half and includes a cavity insert, and the core portion is coupled to the core half and includes a core insert, a pair of neck rings, and a stripper ring. The core insert has an undercut that defines an annular protrusion on an internal surface of a preform that is created in the mold stack assembly. The preform molding system is configured to permit in sequence, retraction of the pair of neck rings away from the core insert and ejection of the preform from the core insert via the stripper ring.
Disclosed is an edge gating injection molding apparatus for delivering a moldable material to an array of mold cavities, the array can have a first column and a last column of mold cavities, the edge gating injection molding apparatus comprising: a unidirectional delivery body for delivering a first stream of the moldable material to a different one of each mold cavity of the first column and the last column of mold cavities, via a first location of the different one of each mold cavity of the first column and the last column of mold cavities; and a bidirectional delivery body for delivering a second stream of the moldable material to the different one of each mold cavity of the first column and the last column of mold cavities, via a second location of the different one of each mold cavity of the first column and the last column of mold cavities.
A drop-in hot runner system includes a first runner component having a first channel aperture extending into a first runner component sliding surface, and a second runner component having a second channel aperture extending into a second runner component sliding surface. A depressible protrusion is associated with the first runner component, and a receiver is associated with the second runner component. The depressible protrusion and the receiver are positioned such that when the first runner component and the second runner component are coupled together along the first and second runner component sliding surfaces the depressible protrusion is received in the receiver, and the first and second channel apertures are misaligned.
A sealing arrangement between hot runner components includes a sealing component positioned between a first hot runner component and a second hot runner component having a molding material channel extending therebetween. The sealing component includes an opening through which the molding material channel extends. The sealing component is received in a bore in the second hot runner component such that a portion of the sealing component projects beyond the second hot runner component to create a gap between the first hot runner component and the second hot runner component. The sealing component has a hardness that is greater than a hardness of the second hot runner component and less than a hardness of the first hot runner component. Further, the sealing component has a coefficient of thermal expansion that is proximate to a coefficient of thermal expansion of the second hot runner component.
An injection unit positioning apparatus is disclosed that includes a positioning assembly interconnecting the injection unit to the molding machine. The positioning assembly includes an angular positioning assembly that permits rotation of the injection unit through a sweep plane that extends from an axis that is perpendicular to an inlet surface of a mold. The positioning assembly also includes a linear positioning assembly that permits linear translation of the injection unit on the sweep plane, and the height of the outlet relative to the inlet surface remains substantially constant during rotation and translation of the positioning assembly.
Disclosed is an edge gating injection molding apparatus for delivering a moldable material to an array of mold cavities, the array can have a first column and a last column of mold cavities, the edge gating injection molding apparatus comprising: a unidirectional delivery body for delivering a first stream of the moldable material to a different one of each mold cavity of the first column and the last column of mold cavities, via a first location of the different one of each mold cavity of the first column and the last column of mold cavities; and a bidirectional delivery body for delivering a second stream of the moldable material to the different one of each mold cavity of the first column and the last column of mold cavities, via a second location of the different one of each mold cavity of the first column and the last column of mold cavities.
A device for imparting vibrational energy to polymeric pellets in a feed path of an extruder is disclosed. The device includes a feed path vibrator having an elongate imparting portion for being disposed within the feed path of the extruder, and a transfer portion extending from the imparting portion. The transfer portion is configured for coupling to a source of vibration energy, and the elongate imparting portion includes at least one twisted portion along its length.
B29C 31/00 - Manipulation, p. ex. alimentation en matière à façonner
B29C 47/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet (moulage par extrusion-soufflage B29C 49/04)
B29C 31/04 - Alimentation, p. ex. chargement d'une cavité de moulage
B29C 45/58 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans le moule Détails
A cavity insert for a mold stack is disclosed, the cavity insert being dimensioned to define a continuous annular cavity insert cooling chamber. The cavity insert also provides a first and second decompression chamber in fluid communication with each end of the cavity insert cooling chamber. Also disclosed is a chamber extension feature in fluid communication with the cavity insert cooling chamber to promote cooling in the downstream region of the cavity insert.
A drop-in hot runner system includes a first runner component having a first channel aperture extending into a first runner component sliding surface, and a second runner component having a second channel aperture extending into a second runner component sliding surface. A depressible protrusion is associated with the first runner component, and a receiver is associated with the second runner component. The depressible protrusion and the receiver are positioned such that when the first runner component and the second runner component are coupled together along the first and second runner component sliding surfaces the depressible protrusion is received in the receiver, and the first and second channel apertures are misaligned.
A method and apparatus of controlling commencement of an injection of a melt stream of moldable material from an auxiliary injection unit. A sensor is placed in an injection molding system to sense a condition related to an injection of a first melt stream of a first moldable material provided by a primary injection unit. Commencement of a second melt stream of a second moldable material from the auxiliary injection unit is initiated upon the sensed condition related to the injection of the first melt stream being detected at a preselected value. The sensed condition may be a pressure, velocity or temperature of the first melt stream as provided by a direct sensor, a force or strain on a hot runner component as provided by an indirect sensor or the occurrence of a function of the injection molding system as provided by a functional sensor.
Disclosed is a preform molding system having a cavity assembly having an end forming portion and a body forming portion. A cooling chamber is defined between the cavity assembly and a surrounding structure. An outside surface of the end forming portion and an outside surface of the body forming portion are spaced apart from the surrounding structure, and, in operation, are engulfed in a flow of cooling fluid within the cooling chamber. Also disclosed is a preform mold stack having a cavity assembly that has end and body forming portions for molding a preform. An annular cooling chamber is defined at least in part by the cavity assembly, and is for cooling a preform molded in the cavity assembly. The annular cooling chamber extends in a longitudinal direction along the length of the end and body forming portions of the cavity assembly.
(1) Parts for molds for plastics injection molding, namely, hot runner nozzles and manifolds
(2) Nozzles for molds for injection plastic molding machines; hot runner nozzles for molds for injection plastic molding machines; manifolds for molds for injection plastic molding machines
A coinjection molding apparatus is disclosed that provides first and second material melt streams to a nozzle. The nozzle defines a first material melt passage for receiving the first material melt stream, a second material melt passage for receiving the second material melt stream and an outer layer melt passage, which receives a portion of the first material melt stream from the first material melt passage. The first material melt stream from the first material melt passage forms an inner layer of a molded article, the second material melt stream from the second material melt passage forms a core layer of the molded article, and the first material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity.
A method and apparatus of controlling commencement of an injection of a melt stream of moldable material from an auxiliary injection unit. A sensor is placed in an injection molding system to sense a condition related to an injection of a first melt stream of a first moldable material provided by a primary injection unit. Commencement of a second melt stream of a second moldable material from the auxiliary injection unit is initiated upon the sensed condition related to the injection of the first melt stream being detected at a preselected value. The sensed condition may be a pressure, velocity or temperature of the first melt stream as provided by a direct sensor, a force or strain on a hot runner component as provided by an indirect sensor or the occurrence of a function of the injection molding system as provided by a functional sensor.
An injection unit positioning apparatus is disclosed that includes a positioning assembly interconnecting the injection unit to the molding machine. The positioning assembly includes an angular positioning assembly that permits rotation of the injection unit through a sweep plane that extends from an axis that is perpendicular to an inlet surface of a mold. The positioning assembly also includes a linear positioning assembly that permits linear translation of the injection unit on the sweep plane, and the height of the outlet relative to the inlet surface remains substantially constant during rotation and translation of the positioning assembly.
Disclosed is an edge gating injection molding apparatus for delivering a moldable material to an array of mold cavities, the array can have a first column and a last column of mold cavities, the edge gating molding apparatus comprising: a unidirectional delivery body for delivering a first stream of the moldable material to a different one of each mold cavity of the first column and the last column of mold cavities, via a first location of the different one of each mold cavity of the first column and the last column of mold cavities; and a bidirectional delivery body for delivering a second stream of the moldable material to the different one of each mold cavity of the first column and the last column of mold cavities, via a second location of the different one of each mold cavity of the first column and the last column of mold cavities.
A hot runner apparatus includes a mold plate defining a pocket; a plurality of sub-manifolds; and a bridge manifold positioned in the pocket and between the sub-manifolds. The bridge manifold and the sub-manifolds are oriented in a common plane. The bridge manifold receives a melt from a melt source. Each of the sub-manifolds is coupled to the bridge manifold to receive the melt from the bridge manifold via a junction between an opening of a network of melt channels within the bridge manifold and an opening of a network of melt channels within each of the sub-manifolds. The sub-manifolds are urged against the bridge manifold to form a seal therebetween, when the bridge manifold and the sub-manifolds thermally expand urging the sub-manifolds against contact regions of a pair of opposing walls of the pocket. The respective opposing walls define a hollow region separated from the respective contact regions by a wall portion.
A coinjection molding apparatus is disclosed that provides first and second material melt streams to a nozzle. The nozzle defines a first material melt channel for receiving the first material melt stream and a second material melt channel for receiving the second material melt stream. The nozzle includes a sleeve and a nozzle tip having a tip divider. The sleeve is disposed within a longitudinal bore of the nozzle to divide the nozzle bore into the first material melt channel and the second material melt channel. The nozzle tip is coupled to a downstream end of the nozzle and defines a first material melt passage for receiving the first material melt stream from the first material melt channel of the nozzle and a second material melt passage for receiving the second material melt stream from the second material melt channel of the nozzle. The tip divider includes an upstream segment that is engaged with a downstream end of the sleeve to provide fluid communication between the first material melt passage of the nozzle tip and the first material melt channel of the nozzle.
An injection molding system is disclosed that includes a mold insert set and a shaft locking assembly that releasably attaches the mold insert set to a mold plate of the injection molding system. Each mold insert of the mold insert set defines at least a portion of a mold cavity. The shaft locking assembly is displaceable between a locked position in which the mold insert set is held to the mold plate and an unlocked position in which the mold insert set is removable from the mold plate.
A coinjection molding apparatus is disclosed that provides first and second material melt streams to a nozzle. The nozzle defines a first material melt passage for receiving the first material melt stream, a second material melt passage for receiving the second material melt stream and an outer layer melt passage, which receives a portion of the first material melt stream from the first material melt passage. The first material melt stream from the first material melt passage forms an inner layer of a molded article, the second material melt stream from the second material melt passage forms a core layer of the molded article, and the first material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity.
An edge-gated injection molding apparatus is disclosed having an injection manifold assembly for distributing a melt stream of moldable material to a plurality of mold cavities aligned on opposing sides of the injection manifold assembly. The injection manifold assembly includes a plurality of melt outlets with each melt outlet being in fluid communication with a respective mold cavity, and a plurality of biasing components disposed along a centerline of the injection manifold assembly. A nozzle seal is disposed between each injection manifold assembly melt outlet and its corresponding mold cavity, with an upstream end of the nozzle seal being slidably disposed against its respective melt outlet. Each biasing component is disposed between a pair of melt outlets and corresponding nozzle seals for biasing the melt outlets and nozzle seals outward from the centerline of the injection manifold assembly toward their respective mold cavities and applying a preload thereto.
An edge-gated injection molding apparatus is disclosed for distributing a melt stream to a plurality of mold cavities aligned on opposing sides of an injection manifold assembly. The injection manifold assembly includes melt outlets aligned on opposing sides thereof with a nozzle seal in fluid communication with each melt outlet for transferring the melt stream to a corresponding mold cavity. A sliding relationship between each nozzle seal and its respective melt outlet while the nozzle seal is securely held relative to the mold gate permits misalignment between the nozzle seal and its respective melt outlet in the cold condition without causing stress on the nozzle seal. Under operating conditions, the sliding relationship permits subsequent alignment between the nozzle seal and its respective melt outlet. The nozzle seal has a two-piece gate seal with components thereof threadably coupled to each other such that relative rotation therebetween applies a sealing preload.
A coinjection molding apparatus is disclosed that provides a skin material melt stream and a core material melt stream to a nozzle. The skin material melt stream forms an inner and outer layer of a molded article with the core material melt stream forming a core layer between the inner and outer skin material layers. A volume of the core material for forming the core layer may be manually adjusted between injection cycles to change a thickness of the core layer between a first molded article and a second molded article. Alternatively, a volume of the core material for forming the core layer may be automatically adjusted during an injection cycle to change a thickness of the core layer during formation of the molded article, such that the molded article will have a core layer with at least a first thickness and a second thickness.
An injection molding system is disclosed that utilizes a melt channel wherein at least a portion of the melt channel has a noncircular cross-section for balancing shear in a melt stream of moldable material that flows therethrough. The noncircular cross-section of the melt channel portion may be, for e.g., capsule-shaped, extended egg-shaped, oval, teardrop-shaped, or peanut-shaped. A flow splitter is also disclosed that is positioned offset from a central axis of an upstream melt channel to protrude between inlets of respective downstream melt channels, where the upstream melt channel splits into the downstream melt channels, to thereby create a narrower inlet into one of the downstream melt channels and a wider inlet into the other of the downstream melt channels.
There is set forth a system comprising an injection molding assembly mold and a processing circuit. The mold can have a stationary section and a moveable section. The stationary section can have a channel assembly and one or more nozzle. The processing circuit can comprise one or more processor, a communication interface, and a memory including a volatile memory and a non-volatile memory. The processing circuit can be mounted to the stationary section or the moveable section in a manner that the processing circuit can be supported in a fixed position relative to the stationary section or the moveable section. The mold can further comprise one or more sensor unit, each sensor unit including one or more sensor. The system can be configured to transmit via the communication interface at least a portion of data outputted by the one or more sensor unit.
A runnerless nozzle for an injection molding apparatus includes a bracing component having an internal space and a lateral bore, a nozzle tip extending from the internal space through the lateral bore of the bracing component, and a securing component installable in the internal spaced of the bracing component. At least one of the bracing component and the securing component defines a lateral channel in communication with and upstream channel for delivering molding material to the nozzle tip. The securing component includes an angled surface for wedging a likewise angled surface of the nozzle tip to engage the nozzle tip with the bracing component when the securing component is installed in the bracing component.
There is set forth herein a system having an injection molding assembly mold including a stationary section and moveable section, the stationary section having a channel assembly, one or more nozzle and a mold cavity, the mold further having a sensor unit array, the sensor unit array comprising one or more sensor unit. The system can include one or more processing circuit that utilizes an output of the one or more sensor unit for determining a condition prevailing within the injection molding assembly.
A method for taking a nozzle of a valve gated runner apparatus includes releasably attaching a valve pin to a movable part of an actuator for moving the valve pin between an open position and a closed position and detaching the valve pin from the actuator by moving the movable part of the actuator towards the open position when the valve pin is immobilized. The valve pin and the movable part valve pin may be releasably attached by a magnetic force. The step of detaching the valve pin from the actuator may be accomplished by overcoming the magnetic force. A valve pin plate can be provided for a plurality of valve pins to be releasably attached to the actuator.
There is set forth herein a system having an injection molding assembly mold including a stationary section and moveable section, the stationary section having a channel assembly, one or more nozzle and a mold cavity, the mold further having a sensor unit array, the sensor unit array comprising one or more sensor unit. The system can include one or more processing circuit that utilizes an output of the one or more sensor unit for determining a condition prevailing within the injection molding assembly.
An injection molding apparatus is disclosed having an actuated part that is movable in forward and rearward directions with a magnetic valve pin coupling attached thereto. A valve pin for opening and closing a mold gate is coupled to the magnetic valve pin coupling to be movable with the actuated part. When the actuated part is moved in an opening stroke direction and the valve pin experiences a stopping force, the magnetic valve pin coupling permits the valve pin to become decoupled from the actuated part to prevent continued movement of the valve pin with the actuated part.
An injection molding apparatus is disclosed having an actuated part that is movable in forward and rearward directions with a magnetic valve pin coupling attached thereto. A valve pin for opening and closing a mold gate is coupled to the magnetic valve pin coupling to be movable with the actuated part. When the actuated part is moved in an opening stroke direction and the valve pin experiences a stopping force, the magnetic valve pin coupling permits the valve pin to become decoupled from the actuated part to prevent continued movement of the valve pin with the actuated part.
A method and apparatus of controlling commencement of an injection of a melt stream of moldable material from an auxiliary injection unit. A sensor is placed in an injection molding system to sense a condition related to an injection of a first melt stream of a first moldable material provided by a primary injection unit. Commencement of a second melt stream of a second moldable material from the auxiliary injection unit is initiated upon the sensed condition related to the injection of the first melt stream being detected at a preselected value. The sensed condition may be a pressure, velocity or temperature of the first melt stream as provided by a direct sensor, a force or strain on a hot runner component as provided by an indirect sensor or the occurrence of a function of the injection molding system as provided by a functional sensor.
A method and apparatus of controlling commencement of an injection of a melt stream of moldable material from an auxiliary injection unit. A sensor is placed in an injection molding system to sense a condition related to an injection of a first melt stream of a first moldable material provided by a primary injection unit. Commencement of a second melt stream of a second moldable material from the auxiliary injection unit is initiated upon the sensed condition related to the injection of the first melt stream being detected at a preselected value. The sensed condition may be a pressure, velocity or temperature of the first melt stream as provided by a direct sensor, a force or strain on a hot runner component as provided by an indirect sensor or the occurrence of a function of the injection molding system as provided by a functional sensor.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Electronic controllers for plastic injection molding machines having a feature that performs color changeovers and that removes and prevents color residue build-up between performing color changeovers
One or more nozzles define separate nozzle channels. The nozzles are coupled to a manifold, so that each of the nozzle channels communicates with a different mold gate. A molding material distribution insert is coupled to the manifold and has a body defining a distribution channel and a plurality of drop channels equal in number to the nozzle channels. The distribution channel is an open distribution channel formed on an outer surface of the body and enclosed by the manifold. The drop channels intersect the distribution channel and exit the body at a different one of the nozzle channels. A valve pin bushing can extend into the drop channels. Valve pins can extend from actuators, through the valve pin bushing and the drop channels, and to the mold gates. A valve pin holder can be coupled to the actuator and coupled to heads of the valve pins.
A coinjection molding apparatus is disclosed that provides a skin material melt stream and a core material melt stream to a nozzle. The skin material melt stream forms an inner and outer layer of a molded article with the core material melt stream forming a core layer between the inner and outer skin material layers. A volume of the core material for forming the core layer may be manually adjusted between injection cycles to change a thickness of the core layer between a first molded article and a second molded article. Alternatively, a volume of the core material for forming the core layer may be automatically adjusted during an injection cycle to change a thickness of the core layer during formation of the molded article, such that the molded article will have a core layer with at least a first thickness and a second thickness.
A coinjection molding apparatus is disclosed that provides a skin material melt stream and a core material melt stream to a nozzle. A nozzle tip of the nozzle defines a central skin material melt passage for receiving the skin material melt stream, an annular core material5 melt passage for receiving the core material melt stream and an annular outer layer melt passage, which receives a portion of the skin material melt stream from the central skin material melt passage. The skin material melt stream from the central skin material melt passage forms an inner layer of a molded article, the core material melt stream from the core material melt passage forms a core layer of the molded article, and the skin material melt10 stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity.
A coinjection molding apparatus is disclosed that provides a skin material melt stream and a core material melt stream to a nozzle. A nozzle tip of the nozzle defines a central skin material melt passage for receiving the skin material melt stream, an annular core material melt passage for receiving the core material melt stream and an annular outer layer melt passage, which receives a portion of the skin material melt stream from the central skin material melt passage. The skin material melt stream from the central skin material melt passage forms an inner layer of a molded article, the core material melt stream from the core material melt passage forms a core layer of the molded article, and the skin material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity.
An injection molding apparatus, such as a hot runner or hot half, includes a manifold having a manifold channel and a nozzle having a nozzle channel. The nozzle is coupled to the manifold, and the manifold channel and the nozzle channel are in communication to define a flow channel. A valve pin bushing has a flow restrictor disposed in the flow channel on an upstream side of the valve pin bushing. A moveable valve pin extends through a bore of the valve pin bushing.
A molding system is disclosed that includes a plurality of cavity portions or core block assemblies attached to a mold plate and a plurality of core portion or core block assemblies attached to a second mold plate, and a plurality of stripper rings or thread split-slide assemblies attached to a stripper plate assembly. The stripper plate assembly includes a main stripper plate with one or more stripper plate panels coupled thereto that are translatable away from the main stripper plate during installation of at least the core portions or core block assemblies. The one or more stripper plate panels may be translatable to fold, outwardly swing, and/or slide relative to the main stripper plate to clear any core portions or core block assemblies that may have been previously installed.
