LU503326B1

LU503326B1 - A gas-assisted polymer double-layer micro co-extrusion precision forming device

Info

Publication number: LU503326B1
Application number: LU503326A
Authority: LU
Inventors: Fang Wang; Biao Liu; Bing Xiao; Shiyu Jiang; Tianrong Chen; Ziyun Wang; Xiaozhen Deng; Hong Xu
Original assignee: Nanchang Inst Tech; Xiaozhen Deng
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-07-10

Abstract

The invention discloses a gas-assisted polymer double-layer micro co-extrusion precision forming device and its application method, including the device body. The device body includes a gas-assisted co-extrusion processing device and a polymer processing box arranged above the gas-assisted co-extrusion processing device. The polymer processing box is detachable and arranged on top of the gas-assisted co-extrusion processing device. The beneficial effects of the invention are: it has a compact structure, and it also improves the effect of preliminary processing of polymer and the efficiency of polymer flow.

Description

DESCRIPTION LU503326

A GAS-ASSISTED POLYMER DOUBLE-LAYER MICRO CO-EXTRUSION PRECISION

FORMING DEVICE

TECHNICAL FIELD

[01] The invention relates to the technical field of polymer processing, in particular to a gas-assisted polymer double-layer micro co-extrusion precision forming device.

BACKGROUND ART

[02] The wide application of high-performance engineering plastics puts forward higher requirements for extrusion processing. The resin viscosity is high during extrusion, and the friction resistance between the plastic melt and the die wall is large in the traditional extrusion process, resulting in inconsistent shear rates at each point of the die cross-section. The melt is in different stress states, and the produced products have large internal stress and serious deformation. At the same time, it is accompanied by severe extrusion swelling, which makes the extruded product and the die inconsistent shape.

[03] However, although the existing methods can process the polymer, there are still many defects: 1. The existing polymer usually brings impurities to the surface in the process of melting, resulting in impurities in the process of initial melting, which makes the polymer easy to produce cracks in the subsequent molding process, thus affecting the processing effect of the polymer. 2. The existing cylindrical flow pipe is usually set horizontally or vertically, and the side wall is provided to set the shell melt guide tubes which are opposite to each other, when feeding one side, the weight of the material itself leads to a partial shortage if feeding the two tubes at the same time, resulting in defects in guiding material.

[04] Based on the above technical defects, a gas-assisted polymer double-layer micro co-extrusion precision forming device is urgently needed.

SUMMARY LU503326

[05] The purpose of the invention is to overcome the shortcomings of the prior arts and to provide a gas-assisted polymer double-layer micro co-extrusion precision forming device with a compact structure, improved preliminary processing effect, and flow efficiency of the polymer.

[06] The purpose of the invention is realized by the following technical solution: a gas-assisted polymer double-layer micro-co-extrusion precision forming device, including the device body. The device body includes a gas-assisted co-extrusion processing device and a polymer processing box arranged above the gas-assisted co-extrusion processing device. The polymer processing box is detachable and arranged on top of the gas-assisted co-extrusion processing device.

[07] The inside of the gas-assisted co-extrusion processing device is a cavity structure and is provided with a first cavity, a second cavity, and a third cavity. The first clapboard is arranged between the first cavity and the second cavity, and the second clapboard is arranged between the second cavity and the third cavity. The inside of the first cavity is provided with a core melt inlet bucket, and the inside of the second cavity is provided with a cylindrical circulation pipe. The inside of the third cavity is provided with a gas-assisted micro co-extrusion flow channel, and the end of the gas-assisted micro co-extrusion flow channel is provided with a detachable adjusting stopper. The inside of the first cavity is provided with the first storage box and the second storage box, and the first storage box and the second storage box are provided with a shell melt guide tube.

The polymer processing box includes a bracket, and the top of the bracket is provided with the first polymer processing box and the second polymer processing box, and the first discharge pipe is arranged between the first polymer processing box and the second polymer processing box, and the end of the first discharge pipe is provided with a removable sealing plug. The first polymer processing box and the second polymer processing box are closely matched, and the top of the core melt inlet bucket is provided with a removable cylinder, and the top of the removable cylinder is provided with a spout.

The bottom of the second polymer processing box is provided with the second discharge pipe, and the second discharge pipe is located at the spout on the removable cylinder.

[08] In the gas-assisted polymer double-layer micro co-extrusion precision formirig)503326 device of the invention, a support leg is arranged on the bottom of the gas-assisted co-extrusion processing device, and the gas-assisted micro co-extrusion flow channel penetrates the bottom of the third cavity. The core melt inlet bucket, the cylindrical flow pipe, and the gas-assisted micro co-extrusion flow channel are connected. A heating device is arranged beside the core melt inlet bucket. The heating device includes an annular cavity arranged outside the core melt inlet bucket and a feed pipe and a discharge pipe arranged on the side wall of the heating device. A switching valve is arranged on the discharge pipe, and the annular cavity is provided with a heating annular cavity and an annular storage cavity.

[09] In the gas-assisted polymer double-layer micro co-extrusion precision forming device of the invention, an annular clapboard is arranged between the heating annular cavity and the annular storage cavity. The annular clapboard is made of a metal heat conducting plate, and the annular clapboard is sealed and connected. The first storage box and the second storage box are arranged on the side wall of the first cavity, and the side wall of the first storage box and the second storage box is provided with the first feed pipe, and the first feed pipe is a folded structure. The end of the first feed pipe is provided with a horizontal feeding port, the top of the polymer processing box two is provided with a flowing port, and the bottom of the second polymer processing box is provided with the inclined blanking plate. The lower part of the first inclined blanking plate is provided with heating parts.

[10] In the gas-assisted polymer double-layer micro co-extrusion precision forming device of the invention, the support comprises the first support panel, the first support leg, and the second support leg, and the ends of the first support leg and the second support leg are provided with fixed plates. The fixed plate is provided with through-hole threads, and the first support leg and the second support leg are fixed by fixed bolts. The first polymer processing box is provided with the first stirring mechanism, the first inclined mesh plate, and the second filter screen on the inside. The filter hole diameter on the first inclined mesh plate is larger than that of the second filter screen, and a feed pipe is provided on the side wall of the first polymer processing box.

[11] In the gas-assisted polymer double-layer micro co-extrusion precision forming device of the invention, a cleaning branch pipe is embedded on the top of the firsU503326 polymer processing box, and the inside of the first polymer processing box is provided with the third discharge pipe, and the third discharge pipe is provided with a pump. There is a connecting pipe between the outlet end of the pump and the cleaning branch pipe.

The first stirring mechanism includes the first motor and a stirring rod arranged on the output shaft of the first motor, and the stirring rod is provided with a chipped blade. The upper part of the first inclined mesh plate is provided with an annular stirring device, and the annular stirring device is arranged on the side wall of the first polymer processing box.

[12] In the gas-assisted polymer double-layer micro co-extrusion precision forming device of the invention, the elastic-assisted stirring device comprises a pile cap and an elastic arc plate arranged on the pile cap, and a spring is arranged between the elastic arc plate and the pile cap. The arrangement between the spring and the elastic arc plate enables the incoming plastic polymer to be rebounded. At the same time, the elastic-assisted stirring device is arranged directly below the cleaning branch pipe and the feed pipe. The cylindrical flow pipe is inclined, and the shell melt feed pipe on the first storage box and the shell melt feed pipe on the second storage box are arranged with upper and lower dislocations.

[13] In the gas-assisted polymer double-layer micro co-extrusion precision forming device of the invention, an adjusting mechanism is arranged on the inside of the cylindrical flow pipe, and a through hole, a transverse convex strip, and a vertical convex strip are arranged on the first inclined mesh plate, and the transverse convex strip and the vertical groove are arranged in a staggered manner. The surface of the first inclined mesh plate is a corrugated undulating structure, the two sides of the vertical convex strip are provided with sharp protrusions, and the upper part of the heating annular cavity is an annular heat conducting plate.

[14] In the gas-assisted polymer double-layer micro co-extrusion precision forming device of the invention, the inside of the third cavity is provided with the first blower and the second blower, and the air outlet pipe on the first blower and the second blower is connected with the side wall of the gas-assisted micro co-extrusion flow channel. The regulating block includes a fixed regulating ring and a detachable fixed baffle, and the detachable fixed baffle is sealed and connected with the fixed regulating ring by bolts. LU503326

[15] In the gas-assisted polymer double-layer micro co-extrusion precision forming device of the invention, the detachable fixed baffle includes the first protective outer ring and the second inner ring. At least 8 through-hole threads are arranged on the first outer ring, and several forming holes are arranged on the second inner ring. The diameter of the forming hole is 2mm-10mm. The adjusting mechanism includes an adjusting groove, an adjusting convex block is arranged on the adjusting groove, and an adjusting screw is arranged at the bottom of the adjusting convex block. The adjusting screw and the bottom of the adjusting convex block are in rotate connections, and two adjusting mechanisms are provided at least;

[16] The fixed adjusting ring is provided with a fixed flange, and the middle part of the fixed adjusting ring is provided with a through hole that cooperates with the detachable fixed baffle, and the detachable fixed baffle is provided with the first blind hole thread, and the first blind hole thread is sealed with the first outer ring through a bolt, the first inclined blanking plate is provided with a blanking groove, and the blanking groove is provided with the first filter screen.

[17] The invention has the following advantages:

[18] 1. The inside of the gas-assisted co-extrusion processing device of the invention is a cavity structure, and is provided with a first cavity, a second cavity, and a third cavity.

A clapboard is arranged between the first cavity and the second cavity, and a clapboard is arranged between the second cavity and the third cavity. The setting of the clapboard and the clapboard enables stable fixation of each section. The inside of the first cavity is provided with a core melt inlet bucket, and the inside of the second cavity is provided with a cylindrical circulation pipe. The inside of the third cavity is provided with a gas-assisted micro co-extrusion flow channel, and a detachable adjusting stopper is arranged on the end of the gas-assisted micro co-extrusion flow channel. And the first storage box and the second storage box are provided with a shell melt guide pipe so that the feeding can be carried out, the polymer processing box includes a bracket, and the upper part of the bracket is provided with the first polymer processing box and the second polymer processing box, and the first polymer processing box and the second polymer processing box are provided with the first discharge pipe, and the end of the first discharge pipe is provided with a detachable sealing plug, the first polymer processing/503326 box and the second polymer processing box are closely matched, the core melt inlet bucket is provided with a detachable cylinder, and the top of the detachable cylinder is provided with a spout, and the bottom of the second polymer processing box is provided with the second discharge pipe. and the second discharge pipe is located at the orifice on the detachable cylinder, enabling the input of the molten polymer.

BRIEF DESCRIPTION OF THE DRAWINGS

[19] Fig. 1 is the structure diagram of the invention;

[20] Fig. 2 is the structure diagram of the first inclined blanking plate in the invention ;

[21] Fig. 3 is the structural diagram of the fixed regulating ring in the invention;

[22] Fig. 4 is the structure diagram of the inclined otter board one in the invention;

[23] Fig. 5 is the structural diagram of the detachable fixed baffle in the invention;

[24] Fig. 6 is the structure diagram of the regulating mechanism in the invention;

[25] Fig. 7 is the partial amplification diagram at A in Fig.1;

[26] Fig. 8 is the sectional view of B-B in Fig.4;

[27] Fig. 9 is a partial amplification diagram at C in Fig. 1.

[28] Among them: device body 1, gas-assisted co-extrusion processing device 2, polymer processing box 3, the first cavity 4, the second cavity 5, the third cavity 6, the first clapboard 7, the second clapboard 8, core melt inlet bucket 9, cylindrical flow pipe 10, gas-assisted micro co-extrusion flow channel 11, adjusting stopper 12, the first storage box 13, the second storage box 14, shell melt guide pipe 15, the first polymer processing box 16, the second polymer processing box 17, the first discharge pipe 18, detachable cylinder 19, the second discharge pipe 20, feed pipe 21, discharge pipe 23, heating annular cavity 24, annular storage cavity 25, the first feed pipe 26, the first inclined blanking plate 27, the first support leg 28, the first inclined mesh plate 29, the second filter mesh 30, cleaning support pipe 31, the third discharge pipe 32, the first connecting pipe 33, the first motor 34, stirring rod 35, annular stirring device 36, pile cap 37, elastic arc plate 38, spring 39, the first through hole 40, transverse convex bar 41, vertical convex bar 42, spike convex 43, annular heat conduction plate 44, fixed adjustment ring 45, detachable fixed baffle 46, the first outer ring 47, the second inner ring 48, through hole thread 49, forming hole 50, adjusting groove 51, adjusting convexJ503326 block 52, adjusting screw 53, fixed flange 54, the first blind hole thread 55, blanking groove 56, the first filter 57.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[29] The invention is further described in combination with the drawings below. The protection range of the invention is not limited to the following:

[30] As shown in Fig.1 to Fig.9, the gas-assisted polymer double-layer micro co-extrusion precision forming device includes a device body 1, the device body 1 including a gas-assisted co-extrusion processing device 2, and a polymer processing box 3 set above the gas-assisted co-extrusion processing device 2, so that the initially processed liquid polymer can flow into the bottom, and the polymer processing box 3 is detachable and set at the top of the gas-assisted co-extrusion processing device 2 ;

[31] The inside of the gas-assisted co-extrusion processing device 2 is a cavity structure and is provided with the first cavity 4, the second cavity 5, and the third cavity 6, a clapboard 7 is arranged between the first cavity 4 and the second cavity 5, the second clapboard 8 is arranged between the second cavity 5 and the third cavity 6, a core melt inlet bucket 9 is arranged inside the first cavity 4, a cylindrical flow pipe 10 is arranged inside the second cavity 4, a gas-assisted micro co-extrusion flow channel 11 is arranged inside the third cavity 6, and a detachable adjusting stopper 12 is arranged at the end of the gas-assisted micro co-extrusion flow channel 11, and the first storage box 13 and the second storage box 14 are arranged inside the first cavity 4. And the first storage box 13 and the second storage box 14 are equipped with shell melt guide pipe 15, the polymer processing box includes a bracket, and the upper part of the bracket is provided with the first polymer processing box 16 and the second polymer processing box 17, the first discharge pipe 18 is arranged between the first polymer processing box 16 and the second polymer processing box two 17, and the end of the first discharge pipe 18 is provided with a detachable sealing plug, so that the polymer can be cleaned preliminarily, the first polymer processing box 16 and the second polymer treatment two 17 are closely matched, the core melt inlet bucket 9 is provided with a detachable cylinder 19. The top of the detachable cylinder 19 is provided with a spout, and the bottom of the second polymer processing box 17 is provided with the second discharge pipe 20, and tH&J503326 second discharge pipe 20 is located at the spout on the detachable cylinder 19.

[32] A support leg is arranged on the bottom of the gas-assisted co-extrusion processing device 2, and the gas-assisted micro co-extrusion flow channel 2 runs through the bottom of the third cavity 6. The core melt inlet bucket 9, the cylindrical flow pipe 10, and the gas-assisted micro-co-extrusion flow channel 11 are connected. A heating device is arranged beside the core melt inlet bucket 9, and the heating device comprises an annular cavity arranged outside the core melt inlet bucket 9, a feed pipe 21 and a discharge pipe 23 are arranged on the side wall of the heating device, and an on-off valve is arranged on the discharge pipe 23. The annular cavity is provided with a heating annular cavity 24 and an annular storage cavity 25 so that the molten liquid can be kept heated.

[33] There is an annular clapboard between the heating annular cavity 24 and the annular storage cavity 25. The annular clapboard is made of a metal heat conduction plate, and the annular clapboard is a sealed connection. The first storage box 13 and the second storage box 14 are both set on the side wall of the first cavity 4, and the side walls of the first storage box 13 and the second storage box 14 are provided with the first feed pipe 26, and the first feed pipe 26 is a folded structure. There is a horizontal feeding port on the end of the first feed pipe 26, and the top of the second polymer processing box 17 is a drip port setting so that the matched polymer can be directly put in, and the bottom of the second polymer processing box 17 is provided with the first inclined blanking plate 27. The lower part of the inclined blanking plate 27 is provided with a heating part.

[34] The bracket includes the first support panel, the first support leg 28 and the second support leg, and the end of the first support leg the second support leg is provided with a fixed plate, and the fixed plate is provided with a through-hole thread, and the first support leg and the second support leg are fixed by the fixed bolt. The bracket is fixed, and the inside of the first polymer processing box 16 is provided with the first stirring mechanism, the first inclined mesh plate 29, and the second filter mesh 30.

The filter hole diameter on the first inclined mesh plate 29 is larger than that of the second filter mesh 30 for filtration, and the side wall of the first polymer processing box

16 is provided with a feed pipe. LU503326

[35] A cleaning support pipe 31 is embedded on the top of the polymer processing box 16, and the inside of the first polymer processing box 16 is equipped with the third discharge tube 32, and the third discharge tube 32 is equipped with a pump. The first connecting tube 33 is arranged between the outlet end of the pump and the cleaning support pipe 31. The first stirring mechanism includes the first motor 34 and a stirring rod arranged on the output shaft of the first motor 34, and the stirring rod 35 is equipped with a chipped blade so that it can be cut during the cleaning process. An annular stirring device 36 is arranged above the first inclined mesh plate 29, and the annular stirring device 36 is arranged on the side wall of the first polymer processing box 16, which enables the rebound of lighter polymers and makes sure it has a higher cleaning efficiency.

[36] The elastic auxiliary stirring device 36 includes the pile cap 37 and the elastic arc plate 38 arranged on the pile cap 37, and a spring 39 is arranged between the elastic arc plate 38 and the pile cap 37. The double elastic setting enables the lighter polymer (light object) to have a large partial rebound, which can complete the stirring and chopping of the polymer. The setting between the spring 39 and the elastic arc plate 38 enables the plastic polymer to rebound. At the same time, the elastic auxiliary stirring device 36 is arranged directly below the cleaning support pipe 31 and below the feed pipe, and the cylindrical flow pipe 10 is inclined. The shell melt guide pipe 15 on the first storage box 13 and the shell melt guide pipe 15 on the second storage box 14 are arranged in up and down dislocation so that the partial filler treatment can be carried out.

[37] The inside of the cylindrical flow pipe 10 is equipped with a regulating mechanism.

The first inclined mesh plate 29 is equipped with the first through hole 40, a transverse convex bar 41, and a vertical convex bar 42, and the transverse convex bar 41 and the vertical groove 42 are in a staggered setting. The surface of the first inclined mesh plate 29 is a corrugated undulating structure, which enables the molten polymer to flow out.

The two sides of the vertical convex bar 42 are equipped with a spike convex 43, which ensures that the partial slight jacking can be carried out, and the partial high-efficiency melting is realized. The upper part of the heating annular cavity 24 is the annular heat conduction plate 44, which enables heat conduction.

[38] The inside of the third cavity 6 is provided with the first blower and the secorid)503326 blower, and the air outlet pipe on the first blower and the second blower is connected with the side wall of the gas-assisted micro co-extrusion flow channel 11, so that processing can be realized under the action of the airflow. The adjusting stopper includes a fixed adjusting ring 45 and a detachable fixed stopper 46, and the detachable fixed stopper 46 is sealed and connected with the fixed adjusting ring 45 by bolts, thereby ensuring convenient disassembly.

[39] The detachable fixed baffle 46 includes the protection first outer ring 47 and the second inner ring 48. The first outer ring 47 is equipped with at least 8 through-hole threads 49, and the second inner ring 48 is equipped with several forming holes 50. The diameter of the forming hole 50 is 2mm-10mm, which makes it possible to choose the suitable forming hole according to different needs and improves production efficiency.

The adjustment mechanism includes adjusting groove 51, adjusting groove 51 is equipped with adjusting convex block 52, and adjusting convex block 52 is equipped with adjusting screw 53 at the bottom. The bottom of the adjusting convex block 52 and the screw 53 are in rotate connection, which makes it easy to adjust, and two adjustment mechanisms are equipped with at least.

[40] A fixed flange 54 is arranged on the fixed adjustment ring 45, and a through hole is arranged in the middle of the fixed adjustment ring 45 to cooperate with the detachable fixed stopper 46, and first blind hole thread 55 is arranged on the detachable fixed stopper 46, and the first blind hole thread 55 is sealed with the first outer ring 47 by bolts.

The blanking groove 56 is arranged on the first inclined blanking plate 27, and the first filter 57 is arranged on the blanking groove 56.

[41] The method of the invention is as follows: firstly, the polymer is placed in the interior of the first polymer processing box 16 for cleaning. When the cleaning is completed, it is slipped under the action of the first discharge pipe 18 with a larger diameter, and heated and melted in the inside of the second polymer processing box 17.

At the same time, according to the actual needs of the site, the polymer can be put into the inside of the second polymer processing box 17 directly. When the molten polymer enters the removable cylinder 19 or the core melt inlet bucket 9, it can be preheated, and the first polymer processing box 16 and the second polymer processing box 17 can be disassembled at the same time. The molten polymer is directly injected into th&J503326 detachable cylinder 19 or the core melt inlet bucket 9 and molded through the molding channel 50 of different sizes to ensure high processing efficiency.

[42] Finally, it should be explained that the above is only the preferred embodiment of the invention, and is not used to limit the invention. Although the invention is described in detail regarding the aforementioned embodiment, it is still possible for the technical personnel in the field to modify the technical solution recorded in the aforementioned embodiment or replace some of the technical features with equivalents. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the invention shall be included within the protection scope of the invention.

Claims

CLAIMS LU503326

1. À gas-assisted polymer double-layer micro-co-extrusion precision forming device is characterized by including the device body; the device body includes a gas-assisted co-extrusion processing device and a polymer processing box arranged above the gas-assisted co-extrusion processing device; the polymer processing box is detachable and arranged on top of the gas-assisted co-extrusion processing device; the inside of the gas-assisted co-extrusion processing device is a cavity structure and is provided with a first cavity, a second cavity, and a third cavity; the first clapboard is arranged between the first cavity and the second cavity, and the second clapboard is arranged between the second cavity and the third cavity; the inside of the first cavity is provided with a core melt inlet bucket, and the inside of the second cavity is provided with a cylindrical circulation pipe; the inside of the third cavity is provided with a gas-assisted micro co-extrusion flow channel, and the end of the gas-assisted micro co-extrusion flow channel is provided with a detachable adjusting stopper; the inside of the first cavity is provided with the first storage box and the second storage box, and the first storage box and the second storage box are provided with a shell melt guide tube; the polymer processing box includes a bracket, and the top of the bracket is provided with the first polymer processing box and the second polymer processing box, and the first discharge pipe is arranged between the first polymer processing box and the second polymer processing box, and the end of the first discharge pipe is provided with a removable sealing plug; the first polymer processing box and the second polymer processing box are closely matched, and the top of the core melt inlet bucket is provided with a removable cylinder, and the top of the removable cylinder is provided with a spout; the bottom of the second polymer processing box is provided with the second discharge pipe, and the second discharge pipe is located at the spout on the removable cylinder.

2. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 1, is characterized in that a support leg is arranged on the bottom of the gas-assisted co-extrusion processing device, and the gas-assisted micro co-extrusion flow channel penetrates the bottom of the third cavity; the core melt inlet bucket, the cylindrical flow pipe, and the gas-assisted micro co-extrusion flow channel are connected; a heating device is arranged beside the core melt inlet bucket; tHeJ503326 heating device includes an annular cavity arranged outside the core melt inlet bucket and a feed pipe and a discharge pipe arranged on the side wall of the heating device; a switching valve is arranged on the discharge pipe, and the annular cavity is provided with a heating annular cavity and an annular storage cavity.

3. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 2, is characterized in that an annular clapboard is arranged between the heating annular cavity and the annular storage cavity; the annular clapboard is made of a metal heat conducting plate, and the annular clapboard is sealed and connected; the first storage box and the second storage box are arranged on the side wall of the first cavity, and the side wall of the first storage box and the second storage box is provided with the first feed pipe, and the first feed pipe is a folded structure; the end of the first feed pipe is provided with a horizontal feeding port, the top of the polymer processing box two is provided with a flowing port, and the bottom of the second polymer processing box is provided with the inclined blanking plate; the lower part of the first inclined blanking plate is provided with heating parts.

4. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 3, is characterized in that the support comprises the first support panel, the first support leg, and the second support leg, and the ends of the first support leg and the second support leg are provided with fixed plates; the fixed plate is provided with through-hole threads, and the first support leg and the second support leg are fixed by fixed bolts; the first polymer processing box is provided with the first stirring mechanism, the first inclined mesh plate, and the second filter screen on the inside; the filter hole diameter on the first inclined mesh plate is larger than that of the second filter screen, and a feed pipe is provided on the side wall of the first polymer processing box.

5. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 4, is characterized in that a cleaning branch pipe is embedded on the top of the first polymer processing box, and the inside of the first polymer processing box is provided with the third discharge pipe, and the third discharge pipe is provided with a pump; there is a connecting pipe between the outlet end of the pump and the cleaning branch pipe; the first stirring mechanism includes the first motor and a stirring rod arranged on the output shaft of the first motor, and the stirring rod is provided withlaJ503326 chipped blade; the upper part of the first inclined mesh plate is provided with an annular stirring device, and the annular stirring device is arranged on the side wall of the first polymer processing box.

6. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 5, is characterized in that the elastic-assisted stirring device comprises a pile cap and an elastic arc plate arranged on the pile cap, and a spring is arranged between the elastic arc plate and the pile cap; the arrangement between the spring and the elastic arc plate enables the incoming plastic polymer to be rebounded; at the same time, the elastic-assisted stirring device is arranged directly below the cleaning branch pipe and the feed pipe; the cylindrical flow pipe is inclined, and the shell melt feed pipe on the first storage box and the shell melt feed pipe on the second storage box are arranged with upper and lower dislocations.

7. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 6, is characterized in that an adjusting mechanism is arranged on the inside of the cylindrical flow pipe, and a through hole, a transverse convex strip, and a vertical convex strip are arranged on the first inclined mesh plate, and the transverse convex strip and the vertical groove are arranged in a staggered manner; the surface of the first inclined mesh plate is a corrugated undulating structure, the two sides of the vertical convex strip are provided with sharp protrusions, and the upper part of the heating annular cavity is an annular heat conducting plate.

8. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 7, is characterized in that the inside of the third cavity is provided with the first blower and the second blower, and the air outlet pipe on the first blower and the second blower is connected with the side wall of the gas-assisted micro co-extrusion flow channel; the regulating block includes a fixed regulating ring and a detachable fixed baffle, and the detachable fixed baffle is sealed and connected with the fixed regulating ring by bolts.

9. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 8, is characterized in that the detachable fixed baffle includes the first protective outer ring and the second inner ring; at least 8 through-hole threads are arranged on the first outer ring, and several forming holes are arranged on the secorid/503326 inner ring; the diameter of the forming hole is 2mm-10mm; the adjusting mechanism includes an adjusting groove, an adjusting convex block is arranged on the adjusting groove, and an adjusting screw is arranged at the bottom of the adjusting convex block; the adjusting screw and the bottom of the adjusting convex block are in rotate connections, and two adjusting mechanisms are provided at least.

10. A gas-assisted polymer double-layer micro-co-extrusion precision forming device, as described in claim 9, is characterized in that the fixed adjusting ring is provided with a fixed flange, and the middle part of the fixed adjusting ring is provided with a through hole that cooperates with the detachable fixed baffle, and the detachable fixed baffle is provided with the first blind hole thread, and the first blind hole thread is sealed with the first outer ring through a bolt, the first inclined blanking plate is provided with a blanking groove, and the blanking groove is provided with the first filter screen.