阅读说明：本技术 一种复合共挤模具 (Composite co-extrusion die ) 是由 石辛涛 解东林 于 2021-03-26 设计创作，主要内容包括：本发明属于共挤模具领域,尤其是一种复合共挤模具,针对现有复合共挤模具的两个通道在加热时温度容易受到相互影响,难以做到两个通道两种设定温度,且两个通道内的温度无法精准掌握,不能适应不同材料的挤出的问题,现提出如下方案,其包括模具共挤总成、第一加热丝、PE进料管、两个第一螺丝、挤出品、加热传感器、第二加热丝、第一截片结构、第二截片结构、第三截片结构和第四截片结构,所述模具共挤总成的顶部和一侧分别开设有第一加热通道和第二加热通道。该复合共挤模具的两个通道在加热时温度不会受到相互的影响,可做到两个通道各行其是,且两个通道内的温度能精准掌握,可以适应不同材料的加工挤出。(The invention belongs to the field of co-extrusion dies, and particularly relates to a composite co-extrusion die, which aims at solving the problems that the temperatures of two channels of the conventional composite co-extrusion die are easily influenced when being heated, two set temperatures of the two channels are difficult to realize, the temperatures in the two channels cannot be accurately mastered, and the two channels cannot adapt to the extrusion of different materials. The temperature of the two channels of the composite co-extrusion die cannot be influenced by each other when the two channels are heated, the two channels can be operated independently, the temperature in the two channels can be accurately mastered, and the composite co-extrusion die can be suitable for processing and extruding of different materials.)

1. A composite co-extrusion die is characterized by comprising a die co-extrusion assembly (1), a first heating wire (2), a PE feeding pipe (3), a heating sensor (6), a second heating wire (7), a first section structure (8), a second section structure (9), a third section structure (10) and a fourth section structure (11), wherein a first heating channel and a second heating channel are respectively formed in the top and one side of the die co-extrusion assembly (1), the first heating wire (2) and the second heating wire (7) are respectively and fixedly connected into the first heating channel and the second heating channel, the PE feeding pipe (3) is arranged in the first heating channel, the first heating wire (2) is spirally wound on the PE feeding pipe (3), a wear-resistant material feeding pipe is installed in the second heating channel, the second heating wire (7) is spirally wound on the wear-resistant material feeding pipe, the heating sensor (6) is arranged on the die co-extrusion assembly (1), the first heating wire (2) and the second heating wire (7) are both connected with the heating sensor (6), the first section structure (8) is connected with the die co-extrusion assembly (1), the second section structure (9) is connected with the first section structure (8), the third section structure (10) is connected with the second section structure (9), and the fourth section structure (11) is connected with the third section structure (10).

2. The composite co-extrusion die according to claim 1, further comprising two first screws (4), wherein the two first screws (4) are both mounted on the die co-extrusion assembly (1).

3. The composite coextrusion die of claim 1, further comprising an extrudate (12), wherein the extrudate (12) is disposed within the die coextrusion assembly (1).

4. A composite co-extrusion die according to claim 1, wherein the thickness of the partition wall (805) on the first cut structure (8) is 3mm, the thickness of the heat insulation plate (903) on the second cut structure (9) is 2mm, the depth of the connecting rubber channel (1001) on the fourth cut structure (11) is 2.5mm, and the depth of the two third head rubber channels (1003) is 5 mm.

5. A composite coextrusion die according to claim 1, wherein the first heating wire (2) is heated at a temperature of 230 ℃ and the second heating wire (7) is heated at a temperature of 75 ℃.

6. The composite co-extrusion die as claimed in claim 1, wherein one side of the die co-extrusion assembly (1), the first section structure (8), the second section structure (9), the third section structure (10) and the fourth section structure (11) is provided with a same die positioning groove (13).

7. The composite co-extrusion die as claimed in claim 1, wherein one side of the die co-extrusion assembly (1) is provided with an installation groove, and the heating sensor (6) is fixedly connected in the installation groove.

8. The composite co-extrusion die as claimed in claim 1, wherein three wear-resistant layer discharge ports (5) are formed at one side of the die co-extrusion assembly (1).

Technical Field

The invention relates to the technical field of co-extrusion dies, in particular to a composite co-extrusion die.

Background

The co-extrusion die is one of various die types, and is different from other dies in that two materials flow along respective flow channels and are converged at an outlet close to a neck ring, when melts with different rheological properties are co-extruded through a common flow channel, multilayer flow is formed, the co-extrusion can be divided into front co-extrusion and rear co-extrusion, wherein the front co-extrusion refers to a mode that two materials are compounded and synchronously formed in the incomplete forming process, melts with different rheological behaviors or different colors are injected into the same forming die by more than two extruders, however, the temperatures of two channels of the existing composite co-extrusion die are easily influenced mutually during heating, two set temperatures of the two channels are difficult to achieve, the temperatures in the two channels cannot be accurately mastered, and the two channels cannot be suitable for the extrusion of different materials.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a composite co-extrusion die.

In order to achieve the purpose, the invention adopts the following technical scheme:

a composite co-extrusion die comprises a die co-extrusion assembly, a first heating wire, a PE feeding pipe, two first screws, an extrusion product, a heating sensor, a second heating wire, a first section structure, a second section structure, a third section structure and a fourth section structure, wherein a first heating channel and a second heating channel are respectively arranged at the top and one side of the die co-extrusion assembly, the first heating wire and the second heating wire are respectively and fixedly connected in the first heating channel and the second heating channel, the PE feeding pipe is arranged in the first heating channel, the first heating wire is spirally wound on the PE feeding pipe, a wear-resistant material feeding pipe is arranged in the second heating channel, the second heating wire is spirally wound on the wear-resistant material feeding pipe, the heating sensor is arranged on the die co-extrusion assembly, and the first heating wire and the second heating wire are both connected with the heating sensor, the first section structure is connected with the die co-extrusion assembly, the second section structure is connected with the first section structure, the third section structure is connected with the second section structure, and the fourth section structure is connected with the third section structure.

Specifically, the first section structure comprises a mold heating block, a first positioning pin, a second positioning pin, two second screws and a plurality of partition walls, the partition walls are connected with one another, an isolation area is formed between the partition walls, the partition walls are connected with the mold heating block, and the two second screws are mounted on the first section structure.

Specifically, the second section structure comprises a plurality of first supporting columns, a plurality of second supporting columns and a heat insulation plate, two first pin holes are formed in the second section structure, and the first positioning pin and the second positioning pin are respectively installed in the two first pin holes.

Specifically, the third section is structurally provided with a plurality of connecting rubber channels, the connecting rubber channels are communicated with the first heating channel, the third section is structurally provided with two second pin holes, and the first positioning pin and the second positioning pin are respectively installed in the two second pin holes.

Specifically, the fourth section structure is provided with two first machine head glue feeding channels, a second machine head glue feeding channel and two third machine head glue feeding channels, the fourth section structure is provided with two third pin holes, and the first positioning pin and the second positioning pin are respectively installed in the two third pin holes.

Specifically, the same mold positioning groove is formed in one side of the mold co-extrusion assembly, the first section structure, the second section structure, the third section structure and the fourth section structure.

Specifically, one side of the die co-extrusion assembly is provided with an installation groove, and the heating sensor is fixedly connected in the installation groove.

Specifically, three wear-resistant layer discharge ports are formed in one side of the die co-extrusion assembly.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the composite co-extrusion die, the supply channel is divided into two channels, the two channels are separately arranged in the directions, so that the mutual interference between the heating and feeding of two materials can be avoided, the two heating structures are different, the operating temperatures of the first heating wire and the second heating wire are detected and controlled by the heating sensors, the die heating block can preheat the die at first, the heating speed and the flowability of the materials are increased, and the matched heating temperatures are provided for different materials.

(2) According to the composite co-extrusion die, the first positioning pin and the second positioning pin can be used for being connected with the whole structure in a penetrating mode, so that the connection stability among the structures is improved, the support toughness can be improved through the plurality of first support columns and the plurality of second support columns, and the fluency of an extruded product in a die co-extrusion assembly is improved.

(3) According to the composite co-extrusion die, the plurality of partition walls form a relatively adaptive isolation area, a relatively good isolation effect is achieved, the two materials are prevented from being influenced after being heated, the heat insulation plate has a good heat insulation effect, and the heat insulation performance between the two materials can be further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be understood that the drawings in the following description are illustrative only, and that the structures, proportions, sizes, and other elements shown in the drawings are incorporated herein by reference in their entirety for all purposes in the present disclosure, which are not intended to limit the scope of the invention, which is to be construed as limiting the invention in any manner, and not necessarily for all purposes, except as technically essential.

FIG. 1 is a schematic structural view of a composite co-extrusion mold according to the present invention;

FIG. 2 is a schematic side view of a composite co-extrusion mold according to the present invention;

FIG. 3 is a schematic cross-sectional view of a first cross-sectional structure of a composite co-extrusion mold according to the present invention;

FIG. 4 is a schematic cross-sectional view of a second cross-sectional structure of a composite co-extrusion mold according to the present invention;

FIG. 5 is a schematic cross-sectional view of a third cross-sectional structure of a composite co-extrusion mold according to the present invention;

FIG. 6 is a schematic cross-sectional view of a fourth cross-sectional structure of a composite co-extrusion mold according to the present invention.

In the figure: 1. a mould co-extrusion assembly; 2. a first heater wire; 3. a PE feeding pipe; 4. a first screw; 5. a discharge hole of the wear-resistant layer; 6. a heating sensor; 7. a second heating wire; 8. a first cut-sheet structure; 801. a mold heating block; 802. a first positioning pin; 803. a second positioning pin; 804. a second screw; 805. a partition wall; 9. a second cut structure; 901. a first support column; 902. a second support column; 903. a heat insulation plate; 10. a third section structure; 1001. connecting a rubber channel; 11. a fourth slice structure; 1101. a first machine head glue feeding channel; 1102. a second machine head enters the glue channel; 1103. a third machine head enters a glue channel; 12. an extruded product; 13. a mold positioning groove.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a composite co-extrusion die comprises a die co-extrusion assembly 1, a first heating wire 2, a PE feeding pipe 3, two first screws 4, an extrusion 12, a heating sensor 6, a second heating wire 7, a first section structure 8, a second section structure 9, a third section structure 10 and a fourth section structure 11, wherein a first heating channel and a second heating channel are respectively formed at the top and one side of the die co-extrusion assembly 1, the first heating wire 2 and the second heating wire 7 are respectively and fixedly connected in the first heating channel and the second heating channel, the PE feeding pipe 3 is arranged in the first heating channel, the first heating wire 2 is spirally wound on the PE feeding pipe 3, a wear-resistant material feeding pipe is arranged in the second heating channel, the second heating wire 7 is spirally wound on the wear-resistant material feeding pipe, the heating sensor 6 is arranged on the die co-extrusion assembly 1, the first heating wire 2 and the second heating wire 7 are connected with the heating sensor 6, the first section structure 8 is connected with the die co-extrusion assembly 1, the second section structure 9 is connected with the first section structure 8, the third section structure 10 is connected with the second section structure 9, and the fourth section structure 11 is connected with the third section structure 10.

Referring to fig. 3, in this embodiment, the first cut-off structure 8 includes a mold heating block 801, a first positioning pin 802, a second positioning pin 803, two second screws 804 and a plurality of partition walls 805, the plurality of partition walls 805 are connected to each other, a partition area is formed between the plurality of partition walls 805, the partition walls 805 are connected to the mold heating block 801, the two second screws 804 are both mounted on the first cut-off structure 8, and the mold heating block 801 can preheat the mold first to accelerate the heating speed and the fluidity of the material.

Referring to fig. 4, in this embodiment, the second cut structure 9 includes a plurality of first support columns 901, a plurality of second support columns 902, and a heat insulation plate 903, two first pin holes are formed in the second cut structure 9, the first positioning pin 802 and the second positioning pin 803 are respectively installed in the two first pin holes, the first positioning pin 802 and the second positioning pin 803 can be used to connect the entire structure in a penetrating manner, so as to improve connection stability between the structures, the plurality of first support columns 901 and the plurality of second support columns 902 can also increase support toughness, and smoothness of the extruded product 12 in the co-extrusion die assembly 1 is improved.

Referring to fig. 5, in this embodiment, a plurality of connecting rubber tracks 1001 are formed on the third section structure 10, the connecting rubber tracks 1001 are communicated with the first heating channel, two second pin holes are formed on the third section structure 10, and the first positioning pin 802 and the second positioning pin 803 are respectively installed in the two second pin holes.

Referring to fig. 6, in this embodiment, the fourth slice structure 11 is provided with two first head glue feeding channels 1101, a second head glue feeding channel 1102 and two third head glue feeding channels 1103, the fourth slice structure 11 is provided with two third pin holes, and the first positioning pin 802 and the second positioning pin 803 are respectively installed in the two third pin holes.

Referring to fig. 2-6, in this embodiment, the same mold positioning groove 13 is disposed on one side of the mold co-extrusion assembly 1, the first section structure 8, the second section structure 9, the third section structure 10, and the fourth section structure 11, and the mold positioning groove 13 can improve the positioning effect of the whole mold structure, so that the stability is better when the mold co-extrusion assembly is used.

Referring to fig. 2, in this embodiment, a mounting groove has been seted up to one side of mould co-extrusion assembly 1, heating sensor 6 fixed connection is in the mounting groove, detects and controls the operating temperature of first heater strip 2 and second heater strip 7 by heating sensor 6, provides assorted heating temperature to different materials.

Referring to fig. 1, in this embodiment, three wearing layer discharge gates 5 have been seted up to one side of mould coextrusion assembly 1, and wear-resistant material discharges from wearing layer discharge gate 5 that sets up alone, can distinguish with another discharge gate and come, and sets up three wearing layer discharge gates 5 and can extrude wear-resistant material is even.

In this embodiment, the two supply channels are divided, and the two channels are separately arranged in directions, so as to prevent the two materials from being interfered with each other when being heated and fed, the operation temperature of the first heating wire 2 and the second heating wire 7 is detected and controlled by the heating sensor 6, the PE material is put into the PE feeding pipe 3, the wear-resistant material is put into the wear-resistant material feeding pipe, the first heating wire 2 heats the PE feeding pipe 3, the PE feeding pipe 3 heats the PE material, the second heating wire 7 heats the wear-resistant material feeding pipe, the wear-resistant material feeding pipe can heat the wear-resistant material, meanwhile, the mold heating block 801 can preheat the mold first to accelerate the heating speed and the fluidity of the material, the matched heating temperature can be provided for different materials, and the first positioning pin 802 and the second positioning pin 803 can be used to connect the whole structure in a penetrating manner, the fluency of the extruded product 12 in the die co-extrusion assembly 1 is improved, the plurality of isolation walls 805 form relatively adaptive isolation areas, a relatively good isolation effect is achieved, the two materials are prevented from being influenced after being heated, the heat insulation plate 903 has a good heat insulation effect, the two materials are extruded through the first heating channel and the second heating channel in the die co-extrusion assembly 1, and the extruded product 12 is formed at last.

Compared with the prior art, the invention has the technical progress that: the temperature of the two channels of the composite co-extrusion die cannot be influenced by each other when the two channels are heated, the two channels can be operated independently, the temperature in the two channels can be accurately mastered, and the composite co-extrusion die can be suitable for processing and extruding of different materials.