The invention relates to an apparatus for producing a preferably corrugated plastics tube from a plastics melt tube. The apparatus comprises an extruder E, a spray head S and wandering mold blocks FB and a mandrel, cooling and/or calibrating mandrel K. It is essential that the mandrel (K) has a sensor device which comprises at least one sensor having a sensor head (11, 21, 31, 41) which captures data, which sensor is arranged such that the coverage region thereof comprises a region of the outer surface (AF) of the mandrel (K) and/or a region of the receiving space (A).
32AbstractThe invention relates to a device for producing plastic pipe from a molten plastic tube. The device comprises a injection head for connection to an extruder forthe extrusion of the molten plastic tube and several molding jaws (1) in each case having a molding surface (2) for the molding of the extruded molten plastic tube, which, for molding the extruded molten plastic tube, are arranged, in each case in pairs, guided by means of a drive device along a molding path in theproduction direction of the extruded molten plastic tube. The molding surface (2)in each case partially encircles a receiving space for receiving the molten plastic tube. According to the invention, at least one of the molding jaws (1) has a sensor device which comprises at least one sensor (10, 20) with a data-capturing sensor head (11, 21), which is arranged such that its capture areacomprises an area of the molding surface and/or an area of the receiving space.Date Recue/Date Received 2020-10-07
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
Plastic processing machines, in particular machines for
manufacturing corrugated and profile tubes, parts for these
machines (except machine controls), moulds for use in such
machines, machines and mechanical devices for treating and
processing plastic pipes (down-stream equipment). Flexible pipes and tubes of plastic, in particular
corrugated and profiled tubes, including double-walled,
including for motor vehicles and machines, and for
electrical installation and cable protection. Rigid pipes, not of metal, for building and civil
engineering, in particular corrugated and profiled tubes,
mainly being drainage pipes, cable conduits and sewage
pipes.
Plastic processing machines, namely, machines for manufacturing corrugated and profile tubes; plastic processing machines parts, namely, moulds for use in the manufacture of plastics, and for use in machines and mechanical devices for treating and processing plastic pipes
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
(1) Plastic processing machines, in particular machines for manufacturing corrugated and profile tubes, parts for these machines (except machine controls), moulds for use in such machines, machines and mechanical devices for treating and processing plastic pipes (down-stream equipment)
(2) Flexible pipes and tubes of plastic, in particular corrugated and profiled tubes, namely for motor vehicles and machines, and for electrical installation and cable protection, for general industrial or manufacturing use; flexible double-walled pipes and tubes of plastic, in particular corrugated and profiled tubes, namely for motor vehicles and machines, and for electrical installation and cable protection, for general industrial or manufacturing use
(3) Rigid pipes made of plastics, not of metal, for building and civil engineering, in particular corrugated and profiled tubes, mainly being drainage pipes, cable conduits and sewage pipes
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
Plastic processing machines, In particular machines for manufacturing corrugated and profile tubes, parts for these machines (except machine controls), moulds for use in such machines, machines and mechanical devices for treating and processing plastic pipes (down-stream equipment). Pipes and tubes of plastic, in particular corrugated and profiled tubes, including double-walled, including for motor vehicles and machines, and for electrical installation and cable protection. Pipes of plastic for structural and civil engineering, in particular corrugated and profiled tubes, mainly being drainage pipes, cable conduits and sewage pipes.
Plastics processing machines, in particular machines for
manufacturing corrugated and profiled tubes, corrugators,
parts for the aforesaid machines, in particular mould jaws
and mould jaw guides, moulds for use on the aforesaid
machines, machines and mechanical devices for treating and
processing plastic pipes (downstream equipment).
(1) Plastics processing machines, in particular machines for manufacturing corrugated and profiled tubes, corrugators, parts for the aforesaid machines, in particular mould jaws and mould jaw guides, moulds, machines for treating and processing plastic pipes (downstream equipment)
(2) Plastics processing machines, namely, corrugators
Plastics processing machines, in particular, machines for manufacturing corrugated and profiled [ tubes, ] corrugators [ ; parts for plastics processing machines, in particular, mould jaws and mould jaw guides; moulds for use on plastics processing machines; machines and mechanical devices for treating and processing plastic pipes ]
The invention relates to a device (10) for producing plastic pipes (10), comprising an extruder (9) having an injection head (9s) and a corrugator (1), into which a plastic melt tube is introduced by means of the injection head (9s) in order to mold the plastic pipe (10), wherein the corrugator (1), according to the invention, has a molding section (1f), in which molding jaws (5) are guided in pairs in the production direction, in an inlet section (1e) of the corrugator (1), the molding jaws (5) are brought together to the start of the molding section (1f) in order to form molding-jaw pairs, and, in an outlet section (1a) of the corrugator (1), the molding-jaw pairs are led apart from each other from the end of the molding section (1f). It is essential that each molding jaw (5) has a first guide pin (5s) and a second guide pin (5s) and the molding jaws (5) are guided in the guiding apparatus (6, 8, 8i) in that the first guide pin (5s) engages at the free end thereof in a first guide groove (6n, 8nz) of the guiding apparatus (6, 8, 8i) and the second guide pin (5s) engages at the free end thereof in a second guide groove (6n, 8nz) of the guiding apparatus (6, 8, 8i).
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
A device (10) is described for producing plastic tubing (10), comprising an extruder (9) with an extrusion head (9s) and a corrugator (1), into which a molten plastic tube is fed via the extrusion head (9s) for shaping the plastic tubing (10), wherein: the corrugator (1) has a moulding section (1f) in which moulding jaws (5) are guided in pairs in the production direction; in an inlet section (1e) of the corrugator (1), the moulding jaws (5) are guided together to form a moulding jaw pair at the start of the moulding section (1f); and in an outlet section (1a) of the corrugator (1), the moulding jaw pairs are guided away from one another at the end of the moulding section (1f). An essential feature is that the guide device (6) has a guiding and/or temperature-control body unit (8, 8i), that the guiding and/or temperature-control body unit (8, 8i) has a temperature-control medium channel unit (8k) through which a temperature-control medium can flow, and that the guiding and/or temperature-control body unit (8, 8i) has a guide and/or a temperature-control surface unit which faces the exterior of the passing moulding jaws (5) whilst transmitting heat.
A device for producing plastic pipes comprises an extruder with a die head and a corrugator, into which a molten plastic tube is introduced by the die head, wherein the corrugator has a molding section where molding jaws are guided in pairs in the production direction, and, in an inlet section of the corrugator, the molding jaws are brought together to form molding jaw pairs towards the start of the molding section, and, in an outlet section of the corrugator, the molding jaw pairs are moved apart from each other from the end of the molding section. Each molding jaw has a first and second guide pins and the jaws are guided in a guiding apparatus where a free end of the first guide pin and a free end of the second guide pin respectively engage in a first guide groove and a second guide groove of the guiding apparatus.
A device for producing plastic pipes comprises an extruder with a die head and a corrugator, into which a molten plastic tube is introduced by the die head, wherein the corrugator has a molding section, in which molding jaws are guided in pairs in the production direction, that, in an inlet section of the corrugator, the molding jaws are brought together to form molding jaw pairs towards the start of the molding section, and, in an outlet section of the corrugator, the molding jaw pairs are moved apart from each other from the end of the molding section. The device provides a stationary guiding apparatus, for guiding the molding jaws, which guiding apparatus has a guide and/or temperature-control element apparatus having: a temperature-control medium channel apparatus through which temperature-control medium can flow, and a guide and/or temperature-control surface apparatus, facing the outer side of the molding jaws passing through, transferring heat.
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
Plastics processing machines, in particular machines for manufacturing corrugated and profiled tubes, corrugators, parts for the aforesaid machines, in particular mould jaws and mould jaw guides, moulds for use on the aforesaid machines, machines and mechanical devices for treating and processing plastic pipes (downstream equipment). Pipes and tubes of plastic, in particular corrugated and profiled tubes, including double-walled, including for motor vehicles and machines, and for electrical installation and cable protection. Pipes of plastic for structural and civil engineering, in particular corrugated and profiled tubes, mainly being drainage pipes, cable conduits and sewage pipes.
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
Plastics processing machines, in particular machines for manufacturing corrugated and profiled tubes, corrugators, parts for the aforesaid machines, in particular mould jaws and mould jaw guides, moulds for use on the aforesaid machines, machines and mechanical devices for treating and processing plastic pipes (downstream equipment). Pipes and tubes of plastic, in particular corrugated and profiled tubes, including double-walled, including for motor vehicles and machines, and for electrical installation and cable protection. Pipes of plastic for structural and civil engineering, in particular corrugated and profiled tubes, mainly being drainage pipes, cable conduits and sewage pipes.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
(1) Plastic-processing machines, namely extrusion machines for plastics, injection plastic moulding machines, plastic moulding machines, complete plastic pipe extrusion lines, complete plastic pipe corrugator lines, parts for these machines, moulds for use in such machines.
(2) Plastic-processing machines, namely, extrusion machines for plastics, injection plastic moulding machines, plastic moulding machines, complete plastic pipe extrusion lines, complete plastic pipe corrugated lines, parts for these machines, moulds for use in such machines, plastic pipe processing equipment, namely, tilting tables, pneumatically activated collection tables, cooling tables, spray cooling units, rotary slitting units for single and double wall plastic pipes, grippers and actuators for pick-and-place and material handling applications, cutting saws, blade saws, friction welders, cuff injection machines, coilers, and machines for inserting cables and wires into plastic pipes and tubes; pipes and tubes of plastic, in particular corrugated and profile tubes, including double-walled, including for motor vehicles and machines, and for electrical installation and cable protection; pipes of plastic for structural and civil engineering, in particular corrugated and profile tubes, mainly being drainpipes, cable conduits and drainage pipes.
17.
METHOD AND DEVICE FOR PRODUCING A DOUBLE-LAYER CORRUGATED PIPE HAVING A CONNECTING SLEEVE
The invention relates to a method and a device for producing a continuous double-walled pipe, which is made of thermoplastic plastic material and has corrugated pipe segments and sleeve pipe segments. The pipe is produced by extruding an outer tube (Sa), which forms the outer pipe of the double-walled pipe, and an inner tube (Si), which forms the inner pipe of the double-walled pipe, in a molding channel (10), which has at least one segment having a corrugated molding surface and at least one segment having a preferably smooth, cylindrical or slightly conical sleeve molding surface. According to the invention, in order to mold a sleeve segment, the outer tube (Sa) is extruded into the sleeve molding surface and is brought in contact with the sleeve molding surface and the inner tube (Si) is extruded into the outer tube (Sa) already in contact over the entire axial length of the sleeve molding surface and is brought in contact with the inner surface of said outer tube (Sa) already in contact over the entire axial length of the sleeve molding surface. According to the method, the pressure (pa) acting on the inner surface of the outer tube (Sa) is controlled by means of steps a1 to a4 described in more detail, and the pressure (pi) acting on the inner surface of the inner tube (Si) is controlled by means of steps b1 to b3 described in more detail.
A corrugator device for shaping a corrugated pipe R from a tube of molten plastics material S is described. The corrugator device comprises movably driven molding jaws 1a, 1b with a corrugated molding area 1f. The molding jaws are formed as first and second molding jaws 1a, 1b, which form pairs of molding jaws 11. The corrugator device comprises a molding passage 10, which is formed by traveling pairs of molding jaws 11 arranged one behind the other. Further on the corrugator device comprises an air cooling device 15 for cooling the molding jaws 1a, 1b. It is provided that the air cooling device 15 has at least one first cooling air circuit 151 with a heat exchanger and a blower and at least one second cooling air circuit 152 with a heat exchanger and a blower. Thereby the at least one first cooling air circuit 151 is formed for cooling the first molding jaws 1a of the pairs of molding jaws 11 and the at least one second cooling air circuit 152 is formed for cooling the second molding jaws 1b of the pairs of molding jaws 11.
A corrugator device for shaping a corrugated pipe R from a tube of molten plastics material S is described. The corrugator device comprises movably driven molding jaws 1a, 1b with a corrugated molding area 1f. The molding jaws are formed as first and second molding jaws 1a, 1b, which form pairs of molding jaws 11. The corrugator device comprises a molding passage 10, which is formed by traveling pairs of molding jaws 11 arranged one behind the other. Further on the corrugator device comprises an air cooling device 15 for cooling the molding jaws 1a, 1b. Each molding jaw 1a, 1b has at least one cooling air channel 1k. The cooling air channel 1k extends over the entire, or at least almost the entire, diametrical circumferential contour of the molding area 1f along the molding area 1f within the wall of the molding jaw 1a, 1b. The cooling air channel 1k of the molding jaw 1a, 1b has an inlet 1u and an outlet 1o for the cooling air. From stationary arranged inlet connetion devices ef, er and statonary arranged outlet connection devices af, ar.
A method and an apparatus for producing an endless double-walled pipe having corrugated pipe sections and sleeve pipe sections are described. The production is effected by extrusion of an outer tube (Sa), forming the outer pipe of the double-walled pipe, and of an inner tube (Si), forming the inner tube of the double-walled pipe, in a molding passage (10) having sections with a corrugated molding surface and a smooth cylindrical sleeve molding surface. To shape the sleeve section, the outer tube is extruded into the sleeve molding surface and is brought into contact with the sleeve molding surface. The inner tube (Si) is then extruded into the outer tube (Sa), already in contact over the entire axial length of the sleeve molding surface, and is brought in the process into contact with the inner side of said outer tube (Sa) that is in contact.
A multi-layer bell is formed from the outer shell of a multi-layer pipe in a secondary process, thereby allowing the extrusion process to be conducted at normal speeds. The bell may include a strain limiting membrane fused or mechanically secured between the outer shell extrusion layer and the inner liner extrusion layer, increased hoop or circumferential stiffness. This invention allows the extrusion process to be in its simplest form, with no adjustments to the corrugator or extruder speeds.
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
A corrugator device for shaping thermoplastic corrugated pipes out of a molten plastic tube issuing from an extrusion device may include moving molding jaws which circulate in a linear molding section and are arranged in paired successive relationship in the molding section forming a molding passage. The pairs of molding jaws may be formed from left-hand and right-hand molding jaws and between them enclose a cylindrical mold cavity to form the molding passage. The device may include a gripper device for guiding the molding jaws from the end of the molding section back to the start of the molding section, and having grippers respectively for the left-hand and the right-hand molding jaws, each with a separate guide and drive device.
A corrugator device for shaping thermoplastic corrugated pipes from a tube of molten plastics material emerging from an extrusion device may include molding jaws, grippers for returning the molding jaws from the end of a molding section to the start of the molding section, and a mold release device. The mold release device is arranged at the end of the molding section, and has a motor-driven rotary disk for interacting with the pair of molding jaws. The pair of molding jaws, which has reached the end of the molding sections, is moved apart by means of first and second drivers formed on the motor driven rotary disk.
An apparatus for producing thermoplastic corrugated pipes may include an extrusion device with an extruder and an extrusion die device and a corrugator device with traveling mold jaws. The extrusion device and the corrugator device are positionally movable in relation to one another, for example for adjustment. The extrusion device is positionally movable in relation to the corrugator device in a horizontal plane, while the corrugator device is movable exclusively in height here.
An injection head (10) is described for a corrugator which is intended for the production of plastics pipes. The injection head (10) has a main head (12), a nozzle body (14) and a mouthpiece means (16) with at least one mouthpiece (32, 36). The main head (12) is embodied with first channels (50, 52) and the nozzle body (14) is embodied with second channels (58, 60) which are flow-connected to the first channels (50, 52). The/each mouthpiece (32, 36) has a central body (74, 76) and a sleeve body, (78, 80) surrounding said central body. On its lateral surface (82, 84) facing the sleeve body (78, 80), the central body (74, 76) is embodied with wound plastics distributor grooves (86, 88) which are flow-connected by means of connecting portions (114, 120) to a concentric annular groove (112, 116) which is formed on the reverse surface (90, 92) of the central body (74, 76) and into which the second channels (58, 60) of the nozzle body (14) discharge.
A method and an apparatus for producing an endless double-walled pipe having corrugated pipe sections and sleeve pipe sections are described. The production is effected by extrusion of an outer tube (Sa), forming the outer pipe of the double-walled pipe, and of an inner tube (Si), forming the inner tube of the double-walled pipe, in a molding passage (10) having sections with a corrugated molding surface and a smooth cylindrical sleeve molding surface. To shape the sleeve section, the outer tube is extruded into the sleeve molding surface and is brought into contact with the sleeve molding surface. The inner tube (Si) is then extruded into the outer tube (Sa), already in contact over the entire axial length of the sleeve molding surface, and is brought in the process into contact with the inner side of said outer tube (Sa) that is in contact.
The invention relates to a method and a device for producing an endless double-walled pipe having corrugated pipe sections and connecting sleeve sections. The production is carried out by extrusion of an outer tube (Sa) forming the outer pipe of the double-walled pipe and an inner tube (Si) forming the inner pipe of the double-walled pipe in a shaped channel (10) comprising sections with a corrugated shaped surface and a smooth cylindrical sleeve shape surface. In order to shape the sleeve section, the outer hose is extruded into the sleeve shape surface and brought into contact with the sleeve shape surface. The inner hose (Si) is then extruded into the outer hose (Sa) that is already in contact with the sleeve shape surface along the entire axial length and is thus brought into contact on the inside of said outer hose.
A description is given of a corrugator device for shaping thermoplastic corrugated pipes from a tube of molten plastics material emerging from an extrusion device, with molding jaws 1.1 to 1.6 which are guided so as to circulate in a linear molding section 10 and are arranged in pairs one behind the other so as to form a molding passage in the molding section 10, wherein the pairs of molding jaws are formed from left-hand and right-hand molding jaws 1.1 to 1.6 and between them enclose a cylindrical mold cavity to form the molding passage; with grippers 2 for returning the molding jaws 1.1 to 1.6 from the end of the molding section 10 to the start of the molding section 10. Arranged at the end of the molding section 10 is a mold release device, which has at least one motor-driven rotary disk 3. The motor-driven rotary disk 3 has a first driver 31 and a second driver 32, which are arranged in such a way that the distance between the first driver 31 and the central rotational axis of the rotary disk is smaller than the distance between the second driver 32 and the central axis. As a result, during the mold releasing operation, at the beginning of said operation the first driver 31 acts with the smaller lever arm on the molding jaws and subsequently the second driver 32 acts with the greater lever arm on the molding jaws.
The invention relates to a device for producing thermoplastic corrugated pipes. Said device comprises an extrusion element (1) provided with an extruder (1a), an injection nozzle element (1b), and a corrugating element (2) having mobile dies (2f). The extrusion element (1) and the corrugating element (2) can be moved in relation to each other, e.g. for adjustment. The extrusion element (1) can be moved in relation to the corrugating element (2) in the horizontal plane, and therefore only the corrugating device (2) is height-adjustable.
The invention describes a corrugator device for shaping thermoplastic corrugated pipes out of a molten plastic tube which emerges from an extrusion device, comprising moulding jaws 1.1 to 1.6 which are guided so as to circulate in a linear moulding section 10 and are arranged in pairs one behind the other so as to form a moulding passage in the moulding section 10, wherein the pairs of moulding jaws are formed from left-hand and right-hand moulding jaws 1.1 to 1.6 and between them surround a cylindrical mould cavity in order to form the moulding passage, and comprising grippers 2 for guiding the moulding jaws 1.1 to 1.6 from the end of the moulding section 10 back to the start of the moulding section 10. A mould release device, which has at least one motor-driven rotary disc 3, is arranged at the end of the moulding section 10. The motor-driven rotary disc 3 has a first driver 31 and a second driver 32 which are arranged such that the distance between the first driver 31 and the central rotational axis of the rotary disc is smaller than the distance between the second driver 32 and the central rotational axis. As a result, at the beginning of the mould release operation, the first driver 31 acts on the moulding jaws with the smaller lever arm and then, during the mould release operation, the second driver 32 acts on the moulding jaws with the larger lever arm.
The invention relates to an apparatus for producing thermoplastic corrugated pipes. The apparatus has an extrusion device 1 with an extruder la and an extrusion die device 1b and a corrugator device 2 with traveling mold jaws 2f. The extrusion device 1 and the corrugator device 2 are positionally movable in relation to one another, for example for adjustment. The extrusion device 1 is positionally movable in relation to the corrugator device 2 in a horizontal plane, while the corrugator device 2 is movable exclusively in height here.
Described is a corrugator device for shaping thermoplastic corrugated pipes out of a molten plastic tube issuing from an extrusion device comprising moving molding jaws 1.1 through 1.6 which circulate in a linear molding section 10 and arranged in paired successive relationship in the molding section 10 form a molding passage, wherein the pairs of molding jaws are formed from left-hand and right-hand molding jaws 1,1 through 1.6 and between them enclose a cylindrical mold cavity to form the molding passage, and a gripper device 2 for guiding the molding jaws 1.1 through 1.6 from the end of the molding section 10 back to the start of the molding section 10. The gripper device has a gripper 2 for the left-hand molding jaws and a gripper 2 for the right-hand molding jaws with a guide and drive device. The guide and drive device has a linear guide rail X1 extending in the X-direction and a linear guide rail Y1 extending in the Y-direction, which are each in the form of respective separate rail devices. The gripper 2 is displaceable on the Y-rail Y1, and the Y-rail Y1 is displaceable on the X-rail X1,
The invention describes a corrugator device for shaping thermoplastic corrugated pipes out of a molten plastic tube which emerges from an extrusion device, comprising moulding jaws 1.1 to 1.6 which migrate in circulating fashion in a linear moulding section (10) and are arranged in pairs one behind the other so as to form a moulding passage in the moulding section (10), wherein the pairs of moulding jaws are formed from left-hand and right-hand moulding jaws 1.1 to 1.6 and between them surround a cylindrical mould cavity in order to form the moulding passage, and comprising a gripper device for guiding the moulding jaws 1.1 to 1.6 from the end of the moulding section (10) back to the start of the moulding section (10). The gripper device has a gripper (2) for the left-hand moulding jaws and a gripper (2) for the right-hand moulding jaws comprising a guide and drive device. The latter respectively has a linear guide rail X1 running in the X direction and a linear guide rail Y1 running in the Y direction, and these are each formed as separate rail devices. The gripper (2) can move on the Y rail Y1, while the Y rail Y1 can move on the X rail X1.
The invention describes a corrugator for producing pipes with a transversely profiled pipe wall having moulding jaws (101 to 110) which are moved along at least two circulatory paths. The circulatory paths are designed in such a way that they each have a work section (135) and a recirculation section. The circulatory paths guide the moulding jaws (101 to 110) in their work section (135) to form a common moulding channel. In the recirculation sections, the moulding jaws (101 to 110) are in each case recirculated under the control of a recirculation device. It is essential that at least two moulding jaws arranged in succession in a circulatory path have different lengths. In order to control the drive of the moulding jaws, a detection device (141, 142) is provided for detecting an actual state of the moulding jaws (101 to 110) guided in the circulatory paths. The control is carried out by means of an electronic control device.
An injection head (10) is described for a corrugator which is intended for the production of plastics pipes. The injection head (10) has a main head (12), a nozzle body (14) and a die ring device (16) with at least one die ring (32, 36). The main head (12) has been designed with first channels (50, 52) and the nozzle body (14) has been designed with second channels (58, 60), these having flow connection to the first channels (50, 52). The/each die ring (32, 36) has a central body (74, 76) and, surrounding this, a sleeve body (78, 80). The central body (74, 76) has been designed, on its lateral surface (82, 84) facing towards the sleeve body (78, 80), with wound plastics distributor grooves (86, 88) connected by means of connecting sections (114, 120) to a concentric annular groove (112, 116) which has been designed on the reverse surface (90, 92) of the central body (74, 76), and to which the two channels (58, 60) of the nozzle body (14) lead.
The invention describes an apparatus for producing double-walled composite tubes which have an outer wall with wave peaks and wave valleys and a smooth inner wall. The apparatus (10) has two rows of shaping-jaw halves (12, 14) which, along a common shaping section, form a shaping tunnel (16) for producing the composite tube. At least one pair of the shaping-jaw halves (14) located opposite one another in the shaping section (16) has an inner contour (22) which forms a tube socket portion (50). The remaining shaping-jaw halves (12) are alternately designed with transverse grooves (18) and transverse fins (20). A sizing mandrel (24), with narrow vacuum grooves (26) formed spaced apart from one another in the axial direction on its outer lateral surface (28), projects into the shaping tunnel (16) for the smooth inner wall of the composite tube. A vacuum control valve device (30) is provided for the purpose of realizing defined closure and reopening of the vacuum grooves (26) which are in each case located in the tube socket portion (50) in steps with the aid of a drive device (38) and of flow-connecting them to a vacuum source (32).
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
Machines for processing plastics, particularly machines for
producing corrugated and profile pipes, parts and fittings
for said machines (except machine control devices), molds
for use in said machines, machines and mechanical devices
for processing and treatment of plastic pipes (downstream
equipment); plastic pipes as parts of machines; pipes made
of plastics, particularly corrugated and profile pipes, also
double walled, for machines. Sheaths for electrical cables, made of plastics,
particularly corrugated and profile pipes, also double
walled. Pipes made of plastics, particularly corrugated and profile
pipes, also double walled, as parts of motor vehicles. Tubes made of plastics, also double walled. Pipes made of plastics, particularly corrugated and profile
pipes, also double walled; pipes made of plastics for
building and civil engineering, particularly corrugated and
profile pipes, preferably as drain pipes, non electrical
cable protection pipes and channel pipes; plastic pipes as
sewer pipes, as industrial water pipes and as fresh water
pipes.
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
Plastic-processing machines, in particular machines for manufacturing corrugated and profile tubes, parts for these machines (except machine controls), moulds for use in such machines, machines and mechanical devices for processing plastic pipes (down-stream equipment). Pipes and tubes of plastic, in particular corrugated and profile tubes, including double-walled, including for motor vehicles and machines, and for electrical installation and cable protection. Pipes of plastic for structural and civil engineering, in particular corrugated and profile tubes, mainly being drainpipes, cable conduits and drainage pipes.
17 - Rubber and plastic; packing and insulating materials
Goods & Services
machines for processing plastics, namely, [ plastic extruders, ] machines for cooling plastics using cooling baths with or without haul-off mechanisms, machines for cooling plastics using spray coolers, slitting saws, rotary slitters, perforators, planetary saws, guillotine cutoffs for cutting plastics, [ plastic pipe coilers, plastic pipe belling machines and machines for packaging plastics, namely, tip tables with stacking carts sold as a unit, ] machines for producing corrugated plastic pipes, parts and fittings for said machines and molds for use in said machines [ corrugated plastic pipes for agricultural, industrial and residential uses ]
