CN201761055U - Five-layer pipe composite die for plastic extruder - Google Patents

Five-layer pipe composite die for plastic extruder Download PDF

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Publication number
CN201761055U
CN201761055U CN2010205402060U CN201020540206U CN201761055U CN 201761055 U CN201761055 U CN 201761055U CN 2010205402060 U CN2010205402060 U CN 2010205402060U CN 201020540206 U CN201020540206 U CN 201020540206U CN 201761055 U CN201761055 U CN 201761055U
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China
Prior art keywords
layer
core rod
die
discharging
gap
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Expired - Fee Related
Application number
CN2010205402060U
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Chinese (zh)
Inventor
吕永宣
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Individual
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Individual
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Priority to CN2010205402060U priority Critical patent/CN201761055U/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
    • B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A five-layer pipe composite die for a plastic extruder relating to a die, which has simple structure, easy manufacturing and good pressure equalizing distribution forming effect and in which materials in each level have independently controlled flow and pressure. The die includes a die sleeve, a central die core, first to fourth layers of die cores, a discharging die core and a discharging die lip; the central die core is arranged in the die sleeve and is fixedly connected with the back end of the die sleeve; first to fourth layers of die cores are successively disposed between an outer wall of the central die core and an inner wall of the die sleeve from back to front; the back end of the discharging die core is fixedly connected with the front end of the central die core; the discharging die lip is sheathed outside the discharging die core; a discharging gap is disposed between the discharging die lip and the discharging die core; the discharging die lip is fixedly connected with the front end of the die sleeve; the central die core and the discharging die core are respectively provided with a central bleed hole; a first layer of charging hole is disposed on the central die core; second to fifth layers of charging holes are disposed on the die sleeve; tail ends of flowing gaps of first to fourth layers are correspondingly communicated with a next layer of flowing gap; and the tail end of the fifth layer of flowing gap is communicated with the discharging gap.

Description

A kind of five layers of pipe composite die that are used for plastic extruder
Technical field
The utility model relates to a kind of mould, especially relates to a kind of five layers of pipe composite die that are used for plastic extruder.
Background technology
The common tube mould that is used for plastic extruder generally can only be extruded the plastic tube of individual layer tube wall, function singleness.If need to obtain multilayer pipe, can only be divided into multiple working procedure moulding successively.At present, but but there is following shortcoming in the composite die of more existing production multilayer pipe: the mold integral structure is complicated, and element precision requires than higher, causes that the part processing difficulty is big, assembling bothers, cost is higher; Mould in use, the independence of individual course is controlled undesirable, has directly influenced the efficient of producing and the quality of product.
Summary of the invention
The purpose of this utility model provide a kind of structure simple, make and be easier to, all press the distribution molding effect better, five layers of pipe composite die that are used for plastic extruder that the flow of each layer raw material and pressure can independently be controlled.
The utility model is provided with die sleeve, central core, ground floor core rod, second layer core rod, the 3rd layer of core rod, the 4th layer of core rod, discharging core rod and discharging die lip; Central core is located in the die sleeve and with the die sleeve rear end and is connected, between central core outer wall and the die sleeve inwall by after establish the ground floor core rod forward successively, second layer core rod, the 3rd layer of core rod and the 4th layer of core rod, the ground floor core rod is enclosed within outside the central core, be provided with the first laminar flow material gap between ground floor core rod inwall and the central core outer wall, second layer core rod is enclosed within outside the ground floor core rod, be provided with the second laminar flow material gap between second layer core rod inwall and the ground floor core rod outer wall, the 3rd layer of core rod is enclosed within outside the second layer core rod, be provided with the 3rd laminar flow material gap between the 3rd layer of core rod inwall and the second layer core rod outer wall, the 4th layer of core rod is enclosed within outside the 3rd layer of core rod, be provided with the 4th laminar flow material gap between the 4th layer of core rod inwall and the 3rd layer of core rod outer wall, be provided with layer 5 stream material gap between the 4th layer of core rod outer wall and the die sleeve inwall, discharging die core back end and central core front end are connected, the discharging die lip is enclosed within outside the discharging core rod, be provided with the discharging gap between discharging die lip and the discharging core rod, discharging die lip and die sleeve front end are connected, central core and discharging core rod are equipped with the central row pore, the central row pore of central core is communicated with the central row pore of discharging core rod and communicates with the external world, central core is provided with the ground floor charging hole, die sleeve is provided with second layer charging hole, the 3rd layer of charging hole, the 4th layer of charging hole and layer 5 charging hole, the ground floor charging hole is communicated with top, the first laminar flow material gap, second layer charging hole is communicated with top, the second laminar flow material gap, the 3rd layer of charging hole is communicated with top, the 3rd laminar flow material gap, the 4th layer of charging hole is communicated with top, the 4th laminar flow material gap, the layer 5 charging hole is communicated with layer 5 stream material top, gap, the first laminar flow material gap tail end is communicated with the second laminar flow material gap, the second laminar flow material gap tail end is communicated with the 3rd laminar flow material gap, the 3rd laminar flow material gap tail end is communicated with the 4th laminar flow material gap, the 4th laminar flow material gap tail end is communicated with layer 5 stream material gap, and layer 5 stream material gap tail end is communicated with the discharging gap.
The top in first-class material gap, the second stream material gap, the 3rd stream material gap, the 4th stream material gap and layer 5 stream material gap preferably is equipped with the ripple annular groove, and the ripple annular groove is beneficial to all pressures of fill process to be disperseed.
The front end of ground floor core rod, second layer core rod, the 3rd layer of core rod and the 4th layer of core rod preferably is tapering point, the rear end of discharging core rod and discharging die lip.
Discharging gap beginning section is preferably the conical ring gap, and the rear in discharging gap is isometrical annular gap.
The discharging die lip preferably is connected by locking flange and die sleeve front end.
The ground floor charging hole preferably is made of the central well of leading portion and 2 shunting charging holes of back segment at least.The shunting charging hole is beneficial to dispersal of feed.
Ground floor charging hole, second layer charging hole, the 3rd layer of charging hole, the 4th layer of charging hole and layer 5 charging hole preferably all radially are provided with.
During use, first, second, third, fourth and the 5th kind of raw material enter in the first laminar flow material gap, the second laminar flow material gap, the 3rd laminar flow material gap, the 4th laminar flow material gap and the layer 5 stream material gap through ground floor charging hole, second layer charging hole, the 3rd layer of charging hole, the 4th layer of charging hole and layer 5 charging hole respectively.First kind of raw material extruded second kind of raw material being extruded from the second laminar flow material gap back from the first laminar flow material gap tail end and covered, extrude from the second laminar flow material gap tail end jointly then, extruding the third raw material of being extruded from the 3rd laminar flow material gap the back covers, extrude from the 3rd laminar flow material gap tail end jointly again then, the 4th kind of raw material of being extruded from the 4th laminar flow material gap again after extruding covers, extrude from the 4th laminar flow material gap tail end then but also jointly, covered by the 5th kind of raw material of extruding from layer 5 stream material gap again after extruding, at last jointly from the extrusion molding of discharging gap.Thereby realize the plastic tube finished product of 5 layers of tube wall.5 kinds of raw materials different colours can be made, the plastic tube finished product of 5 layers of different colours tube wall can be realized like this.
This shows, adopt said structure, compared with the prior art, the utlity model has simple in structure, make easily, all press outstanding advantages such as distribution good forming effect.And five layers of material feeding flow and pressure can carry out independent control by runner separately.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Referring to Fig. 1, the utility model embodiment is provided with die sleeve 1 (for ease of processing, die sleeve 1 is the split combining structure, also can be integral structure), central core 2, ground floor core rod 3, second layer core rod 4, the 3rd layer of core rod 5, the 4th layer of core rod 6, discharging core rod 7, discharging die lip 8 and discharging die lip locking method orchid 9.
Central core 2 is located in the die sleeve 1 and with die sleeve 1 rear end and is connected.Between central core 2 outer walls and the die sleeve inwall by after establish ground floor core rod 3, second layer core rod 4, the 3rd layer of core rod 5 and the 4th layer of core rod 6 forward successively.Ground floor core rod 3 is enclosed within outside the central core 2, be provided with the first laminar flow material gap P1 between ground floor core rod 3 inwalls and central core 2 outer walls, second layer core rod 4 is enclosed within outside the ground floor core rod 3, be provided with the second laminar flow material gap P2 between second layer core rod 4 inwalls and ground floor core rod 3 outer walls, the 3rd layer of core rod 5 is enclosed within outside the second layer core rod 4, be provided with the 3rd laminar flow material gap P3 between the 3rd layer of core rod 5 inwall and second layer core rod 4 outer walls, the 4th layer of core rod 6 is enclosed within outside the 3rd layer of core rod 5, be provided with the 4th laminar flow material gap P4 between the 4th layer of core rod 6 inwall and the 3rd layer of core rod 5 outer wall, be provided with layer 5 stream material gap P5 between the 4th layer of core rod 6 outer wall and die sleeve 1 inwall.First, second, third, fourth and the top in layer 5 stream material gap be equipped with the ripple annular groove, the ripple annular groove is beneficial to all pressures of fill process raw material to be disperseed.
Discharging core rod 7 rear ends and central core 2 front ends are connected, and discharging die lip 8 is enclosed within outside the discharging core rod 7, are provided with discharging gap P6 between discharging die lip 8 and the discharging core rod 7, and discharging die lip 8 is connected by discharging die lip locking method blue 9 and die sleeve 1 front end.Central core 2 is provided with central row pore 21 and discharging core rod 7 is provided with central row pore 71, and central row pore 21 is communicated with central row pore 71 and communicates with the external world.Central core 2 is provided with the ground floor charging hole, and the ground floor charging hole is made of the axial centre charging hole 22 of leading portion and 4 oblique shunting charging holes 23 (only drawing among Fig. 1 2) of back segment.The dispersion of raw material when shunting charging hole 23 is beneficial to charging.Die sleeve 1 is provided with second layer charging hole 11, the 3rd layer of charging hole 12, the 4th layer of charging hole 13 and layer 5 charging hole 14, and except that the ground floor charging hole, other each layer charging holes are radially and are provided with.The axial centre charging hole 22 and the external feed channel connection of ground floor charging hole 11,4 oblique shunting charging holes 23 are communicated with P1 top, the first laminar flow material gap, second layer charging hole 11 is communicated with P2 top, the second laminar flow material gap, the 3rd layer of charging hole 12 is communicated with P3 top, the 3rd laminar flow material gap, the 4th layer of charging hole 13 is communicated with P4 top, the 4th laminar flow material gap, and layer 5 charging hole 14 is communicated with layer 5 stream material P5 top, gap.Layer 5 stream material gap P5 tail end is communicated with discharging gap P6.The first laminar flow material gap P1 tail end is communicated with the second laminar flow material gap P2, the second laminar flow material gap P2 tail end is communicated with the 3rd laminar flow material gap P3, the 3rd laminar flow material gap P3 tail end is communicated with the 4th laminar flow material gap P4, the 4th laminar flow material gap P4 tail end is communicated with layer 5 stream material gap P5, and layer 5 stream material gap P5 tail end is communicated with discharging gap P6.
The front end of ground floor core rod 3, second layer core rod 4, the 3rd layer of core rod 5 and the 4th layer of core rod 6 is tapering point.P6 beginning section in discharging gap is the conical ring gap, and the rear (discharging section) of discharging gap P6 is isometrical annular gap.

Claims (7)

1. five layers of pipe composite die that are used for plastic extruder is characterized in that being provided with die sleeve, central core, ground floor core rod, second layer core rod, the 3rd layer of core rod, the 4th layer of core rod, discharging core rod and discharging die lip; Central core is located in the die sleeve and with the die sleeve rear end and is connected, between central core outer wall and the die sleeve inwall by after establish the ground floor core rod forward successively, second layer core rod, the 3rd layer of core rod and the 4th layer of core rod, the ground floor core rod is enclosed within outside the central core, be provided with the first laminar flow material gap between ground floor core rod inwall and the central core outer wall, second layer core rod is enclosed within outside the ground floor core rod, be provided with the second laminar flow material gap between second layer core rod inwall and the ground floor core rod outer wall, the 3rd layer of core rod is enclosed within outside the second layer core rod, be provided with the 3rd laminar flow material gap between the 3rd layer of core rod inwall and the second layer core rod outer wall, the 4th layer of core rod is enclosed within outside the 3rd layer of core rod, be provided with the 4th laminar flow material gap between the 4th layer of core rod inwall and the 3rd layer of core rod outer wall, be provided with layer 5 stream material gap between the 4th layer of core rod outer wall and the die sleeve inwall, discharging die core back end and central core front end are connected, the discharging die lip is enclosed within outside the discharging core rod, be provided with the discharging gap between discharging die lip and the discharging core rod, discharging die lip and die sleeve front end are connected, central core and discharging core rod are equipped with the central row pore, the central row pore of central core is communicated with the central row pore of discharging core rod and communicates with the external world, central core is provided with the ground floor charging hole, die sleeve is provided with second layer charging hole, the 3rd layer of charging hole, the 4th layer of charging hole and layer 5 charging hole, the ground floor charging hole is communicated with top, the first laminar flow material gap, second layer charging hole is communicated with top, the second laminar flow material gap, the 3rd layer of charging hole is communicated with top, the 3rd laminar flow material gap, the 4th layer of charging hole is communicated with top, the 4th laminar flow material gap, the layer 5 charging hole is communicated with layer 5 stream material top, gap, the first laminar flow material gap tail end is communicated with the second laminar flow material gap, the second laminar flow material gap tail end is communicated with the 3rd laminar flow material gap, the 3rd laminar flow material gap tail end is communicated with the 4th laminar flow material gap, the 4th laminar flow material gap tail end is communicated with layer 5 stream material gap, and layer 5 stream material gap tail end is communicated with the discharging gap.
2. a kind of five layers of plastic extruder pipe composite die that are used for as claimed in claim 1, it is characterized in that first, second, third, fourth and the top in layer 5 stream material gap be equipped with the ripple annular groove.
3. a kind of five layers of pipe composite die that are used for plastic extruder as claimed in claim 1 is characterized in that the front end of ground floor core rod, second layer core rod, the 3rd layer of core rod and the 4th layer of core rod is tapering point.
4. a kind of five layers of pipe composite die that are used for plastic extruder as claimed in claim 1 is characterized in that discharging gap beginning section is the conical ring gap, and the rear in discharging gap is isometrical annular gap.
5. a kind of five layers of pipe composite die that are used for plastic extruder as claimed in claim 1 is characterized in that the discharging die lip is connected by locking flange and die sleeve front end.
6. a kind of five layers of pipe composite die that are used for plastic extruder as claimed in claim 1 is characterized in that the ground floor charging hole is made of the central well of leading portion and 2 shunting charging holes of back segment at least.
7. a kind of five layers of plastic extruder pipe composite die that are used for as claimed in claim 1, it is characterized in that first, second, third, fourth and the layer 5 charging hole all radially be provided with.
CN2010205402060U 2010-09-25 2010-09-25 Five-layer pipe composite die for plastic extruder Expired - Fee Related CN201761055U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205402060U CN201761055U (en) 2010-09-25 2010-09-25 Five-layer pipe composite die for plastic extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205402060U CN201761055U (en) 2010-09-25 2010-09-25 Five-layer pipe composite die for plastic extruder

Publications (1)

Publication Number Publication Date
CN201761055U true CN201761055U (en) 2011-03-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102765179A (en) * 2012-06-13 2012-11-07 浙江双林塑料机械有限公司 Five-layer coextrusion plastic pipe forming die
CN103358523A (en) * 2012-03-30 2013-10-23 上海金湖挤出设备有限公司 Co-extrusion head for five-layer screw-type pipe
EP4230380A1 (en) * 2022-02-21 2023-08-23 BBM Maschinenbau und Vertriebs GmbH Coextrusion die for producing multi-layer tubular preforms made of thermoplastic material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103358523A (en) * 2012-03-30 2013-10-23 上海金湖挤出设备有限公司 Co-extrusion head for five-layer screw-type pipe
CN103358523B (en) * 2012-03-30 2016-03-09 上海金湖挤出设备有限公司 A kind of five layer screw type pipe co-extrusion heads
CN102765179A (en) * 2012-06-13 2012-11-07 浙江双林塑料机械有限公司 Five-layer coextrusion plastic pipe forming die
CN102765179B (en) * 2012-06-13 2014-11-05 浙江双林塑料机械有限公司 Five-layer coextrusion plastic pipe forming die
EP4230380A1 (en) * 2022-02-21 2023-08-23 BBM Maschinenbau und Vertriebs GmbH Coextrusion die for producing multi-layer tubular preforms made of thermoplastic material

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110316

Termination date: 20130925