Puncture-resistant high-strength polyethylene film extruder

Abstract

The invention relates to the technical field of polyethylene film extruders, and discloses a puncture-resistant high-strength polyethylene film extruder. Comprising a base and two supporting plates, the two supporting plates are fixed to the top of the base, a plurality of sets of heat conduction assemblies are installed on the outer side of a conveying cylinder to melt polyethylene raw materials, from the perspective of equipment maintenance, the heat conduction assemblies are arranged on the outer side and do not make direct contact with the raw materials, the maintenance frequency and cost are reduced, and meanwhile the heat conduction assemblies are convenient to maintain. The conveying cylinder does not need to be disassembled during cleaning and maintenance, in terms of heating uniformity, the multiple heat conduction assemblies transfer heat from the outer side of the conveying cylinder in multiple directions, the raw material plasticizing uniformity is effectively improved, the quality is better, in the aspect of the cleaning effect, the copper scraper can continuously and comprehensively scrape away attachments in the rotating process, no matter dirt or tiny residues exist, and the cleaning efficiency is improved. And the influence of attachments on the raw material conveying smoothness is avoided, so that the overall production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of polyethylene film extruder technology, specifically to a puncture-resistant high-strength polyethylene film extruder. Background Technology

[0002] Puncture-resistant high-strength polyethylene film is made from polyethylene as the base material through the addition of reinforcing materials or special processes. It has high puncture resistance and excellent mechanical properties, can resist puncture by sharp objects, and at the same time maintains flexibility and chemical resistance. It is widely used in packaging, agriculture and engineering isolation fields.

[0003] Puncture-resistant high-strength polyethylene film requires an extruder because it can heat and melt polyethylene resin, then convey, mix and plasticize it through a screw to ensure that the raw material is melted evenly, and then formed into a continuous and uniform film preform through a mold. This process is crucial for controlling the film thickness, uniformity and physical properties.

[0004] Traditional polyethylene film extruders place the heating element inside the conveyor cylinder. This element is constantly exposed to high temperature, high pressure, and material friction, making it prone to damage. Maintenance requires disassembling the conveyor cylinder, which is complex and costly. Furthermore, the heat generated by the internal heating element is difficult to dissipate effectively, leading to heat accumulation, wasting energy, and potentially causing safety hazards. Additionally, during the conveying of polyethylene raw materials, residues remain on the inner wall of the conveyor cylinder. From a raw material conveying perspective, these residues occupy internal space, hindering the smooth flow of polyethylene raw materials, reducing conveying efficiency, and affecting production progress. Moreover, the residues cause uneven distribution of raw materials during conveying, resulting in inconsistent film thickness during subsequent extrusion and affecting product quality. From an equipment maintenance perspective, the long-term accumulation of residues corrodes the inner wall of the conveyor cylinder, shortening equipment lifespan and increasing maintenance costs. Simultaneously, these residues can breed bacteria, contaminating the raw materials and affecting the hygienic and safe performance of the film. Summary of the Invention

[0005] The purpose of this invention is to provide a puncture-resistant, high-strength polyethylene film extruder to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a puncture-resistant high-strength polyethylene film extruder, comprising a base and two support plates, both support plates being fixed to the top of the base, and two mounting sleeves being fixedly connected to the top of the support plates, with conveying cylinders fixed to the inner walls of the two mounting sleeves by bolts, and a heat-conducting plate being fixedly connected to the outer side of the conveying cylinders; A heat-conducting component is disposed on the outside of the heat-conducting plate. The heat-conducting component includes a connecting plate fixedly installed on the outside of the heat-conducting plate. A ventilation frame is fixedly connected to the bottom of the connecting plate. Multiple heating strips are fixedly connected to the inner wall of the ventilation frame. A heating plate is fixedly connected to the inner wall of the heating strips. A fan is connected to the bottom of the ventilation frame. The heat conduction groove is formed on the inner wall of the connecting plate; The cleaning assembly is located inside the conveying cylinder. The cleaning assembly includes multiple copper scrapers that slide on the inner wall of the conveying cylinder and are arranged in a ring. A connecting block is fixedly connected to one side of each copper scraper, and an installation plate is fixedly connected to one side of each connecting block. There are two installation plates.

[0007] Preferably, a first support seat is provided on one side of the base, and a fixing seat is fixedly connected to the top of the first support seat by bolts.

[0008] Preferably, a servo motor is fixedly connected to the top of the fixed base, and a second support base is provided on one side of the first support base.

[0009] Preferably, a mounting frame is fixedly connected to the top of the second support base, and a connecting rod is fixedly connected to the output end of the servo motor.

[0010] Preferably, three gears are fixedly connected to the outer side of the connecting rod, and the three gears mesh in sequence, and the outer side of the connecting rod is rotatably connected to the inner wall of the mounting frame.

[0011] Preferably, a fixing rod is fixedly connected to the inner wall of the gear, and one end of the fixing rod is rotatably connected to the inner wall of the mounting frame.

[0012] Preferably, one end of the fixing rod is fixedly connected to a connecting column, and one end of the connecting column is rotatably connected to the inner wall of the conveying cylinder.

[0013] Preferably, one end of the connecting column is fixedly connected to a conveying shaft for conveying polyethylene raw materials, and both ends of the conveying shaft are fixedly connected to the inner walls of the two mounting plates respectively.

[0014] Preferably, the top of the support plate is fixedly connected to a first fixing ring for supporting the conveying cylinder, and the top of the first fixing ring is fixedly connected to a second fixing ring by bolts, and the second fixing ring and the first fixing ring are combined to form a circular groove.

[0015] Preferably, the inner wall of the conveying cylinder is connected to a feed pipe, and the outer side of the feed pipe penetrates the inner wall of the mounting sleeve. The top of the feed pipe is fixedly connected to a feed hopper by bolts.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, multiple sets of heat-conducting components are installed on the outside of the conveyor cylinder to melt the polyethylene raw material. From a maintenance perspective, placing the heat-conducting components on the outside, without direct contact with the raw material, reduces component damage caused by raw material corrosion and friction, lowering maintenance frequency and costs. Furthermore, cleaning and maintenance do not require disassembling the conveyor cylinder, simplifying operation and saving time and manpower. Regarding heating uniformity, the multiple sets of heat-conducting components transfer heat from multiple directions outside the conveyor cylinder, ensuring uniform heating of the raw material throughout the cylinder, avoiding localized overheating or undercooling, effectively improving the uniformity of raw material plasticization, thereby ensuring stable thickness and strength of the extruded film, resulting in superior quality. Simultaneously, cleaning... The cleaning component uses a scraper that rotates along with the conveyor shaft to scrape and clean the deposits on the inner wall of the conveyor cylinder. In terms of cleaning effect, the copper scraper can continuously and thoroughly scrape off the deposits during rotation. Whether it is dirt or tiny residue, it can be effectively cleaned, ensuring that the inner wall is clean and preventing the deposits from affecting the smooth flow of raw material. This ensures that the raw material enters the extrusion stage evenly and stably, improving film quality. In terms of production efficiency, this cleaning method does not require machine shutdown for cleaning, and can achieve cleaning while producing, greatly reducing the production interruption time caused by cleaning, improving the continuous operation capability of the equipment, and thus improving the overall production efficiency. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the puncture-resistant high-strength polyethylene film extruder provided by the present invention; Figure 2 This is a schematic diagram of the feed pipe and feed hopper structure provided by the present invention; Figure 3 A schematic diagram of the base and first support structure provided by the present invention; Figure 4 This is a schematic diagram of the second support base and mounting frame structure provided by the present invention; Figure 5 for Figure 4 A magnified structural diagram of point A is shown below; Figure 6 for Figure 3 A magnified structural diagram of point B is shown below; Figure 7 for Figure 3 A magnified structural diagram of point C is shown.

[0018] In the diagram: 1. Base; 2. Support plate; 3. Mounting sleeve; 4. Heat-conducting plate; 5. Conveying cylinder; 6. Heat-conducting component; 61. Connecting plate; 62. Ventilation frame; 63. Heating strip; 64. Heating plate; 65. Fan; 7. Cleaning component; 71. Copper scraper; 72. Connecting block; 73. Mounting plate; 8. First support seat; 9. Fixed seat; 10. Servo motor; 11. Second support seat; 12. Mounting frame; 13. Connecting rod; 14. Gear; 15. Fixed rod; 16. Connecting column; 17. Conveying shaft; 18. First fixing ring; 19. Second fixing ring; 20. Heat-conducting groove; 21. Feed pipe; 22. Feed hopper. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-6 As shown, a puncture-resistant high-strength polyethylene film extruder includes a base 1, two support plates 2 fixed to the top of the base 1, and two mounting sleeves 3 fixedly connected to the top of the support plates 2. A conveying cylinder 5 is bolted to the inner wall of the two mounting sleeves 3, and a heat-conducting plate 4 is fixedly connected to the outer side of the conveying cylinder 5. The base 1 serves as the supporting foundation for the entire extruder, providing a stable platform for other components and facilitating the placement of the extruder in a suitable working position. The two support plates 2 support the mounting sleeves 3 and the conveying cylinder 5, ensuring the conveying cylinder 5 is at a suitable height for subsequent raw material conveying and extrusion operations. The two mounting sleeves 3 also serve to fix and support the conveying cylinder 5, preventing it from shaking during use. The conveying cylinder 5 is the main area for conveying and melting polyethylene raw materials, where the raw materials are heated and melted before being conveyed to the extrusion die to prepare for subsequent film forming. The heat-conducting plate 4 is fixed to the outer side of the conveying cylinder 5 to facilitate the transfer of heat generated by the heat-conducting component 6 to the conveying cylinder 5.

[0021] It should be noted that the heat conduction plate 4 is made of high thermal conductivity aluminum alloy, and the conveying cylinder 5 is made of high temperature and corrosion resistant stainless steel to ensure efficient heat conduction and stable use.

[0022] A heat-conducting component 6 is disposed on the outside of the heat-conducting plate 4. The heat-conducting component 6 includes a connecting plate 61 fixedly installed on the outside of the heat-conducting plate 4. A ventilation frame 62 is fixedly connected to the bottom of the connecting plate 61. Multiple heating strips 63 are fixedly connected to the inner wall of the ventilation frame 62. A heating plate 64 is fixedly connected to the inner wall of the heating strips 63. A fan 65 is connected to the bottom of the ventilation frame 62. A heat-conducting groove 20 is formed on the inner wall of the connecting plate 61. The connecting plate 61 is used to connect the ventilation frame 62, providing guidance for air circulation and facilitating heat transfer. The ventilation frame 62 is provided to provide installation space for the heating strips 63. When multiple heating bars 63 are energized, they generate heat. The heating bars 63 transfer the heat to the ventilation frame 62, and then to the conveying cylinder 5. The heating plate 64 heats up when energized and is the core component that generates heat, providing heat for the melting of polyethylene raw materials. When the fan 65 is turned on, it heats the airflow by blowing air in conjunction with the heating bars 63 and the heating plate 64. The heat is transferred to the heat conduction plate 4 through the heat conduction groove 20 and then to the conveying cylinder 5, thereby melting the polyethylene raw materials without direct contact with the raw materials. This reduces component damage caused by raw material corrosion and friction, and lowers maintenance frequency and costs.

[0023] It should be noted that the heating plate 64 is usually made of an electrothermal alloy material. Its working principle is based on the thermal effect of electric current. When current passes through the heating plate 64, which has a relatively high resistance, electrical energy is converted into heat energy. In this extruder, after the heating plate 64 is energized and heats up, the heat fills the inner cavity of the ventilation frame 62. Then, the hot air is blown by the fan 65 to the heat guide plate 4, and finally transferred to the conveying cylinder 5 through the heat guide plate 4 to heat the polyethylene raw material inside the cylinder, so that it reaches a molten state, providing a suitable raw material for subsequent extrusion molding. The heating strip 63 is generally composed of a heating wire and an insulating material. The heating wire is mostly made of iron-chromium-aluminum alloy. Its principle is that when current flows through the heating wire, the resistance produces heat. Joule heating occurs in the extruder when multiple heating strips 63 are energized and generate heat together with the heating plate 64. The blower 65 is turned on to blow air, making the heat more evenly distributed. This heat is conducted to the conveying cylinder 5 through the heat conduction plate 4 to heat the raw material. Multiple sets of heat conduction plates 4 transfer heat from the outside of the conveying cylinder 5 from multiple directions, which can ensure that the raw material in the conveying cylinder 5 is heated evenly and improve the melting effect of the raw material. At the same time, when the hot air blown by the blower 65 comes into contact with the heat conduction plate 4, the heat is transferred to the heat conduction plate 4 through both heat conduction and convection. The heat conduction plate 4 then transfers the heat to the conveying cylinder 5 through heat conduction, which raises the temperature of the conveying cylinder 5 and then heats and melts the raw material in the cylinder.

[0024] The cleaning component 7 is located inside the conveying cylinder 5. The cleaning component 7 includes multiple copper scrapers 71 that slide on the inner wall of the conveying cylinder 5. The multiple copper scrapers 71 are arranged in a ring. A connecting block 72 is fixedly connected to one side of the copper scraper 71, and a mounting plate 73 is fixedly connected to one side of the connecting block 72. There are two mounting plates 73. When the conveying shaft 17 rotates, the multiple copper scrapers 71 rotate together with the conveying shaft 17 to scrape off the deposits on the inner wall of the conveying cylinder 5 and keep the inner wall clean. The connecting block 72 connects the copper scraper 71 and the mounting plate 73, so that the copper scraper 71 can rotate with the mounting plate 73. The two mounting plates 73 can rotate under the drive of the conveying shaft 17, thereby driving the copper scraper 71 to rotate and clean the deposits.

[0025] It should be noted that the copper material in the copper scraper 71 has good thermal conductivity and wear resistance. When cleaning the attached materials, it can not only effectively scrape off the attached materials, but also avoid damage to the inner wall of the conveying cylinder 5 caused by excessive heat generated by friction to a certain extent. At the same time, it reduces its own wear and extends its service life.

[0026] A first support seat 8 is provided on one side of the base 1. A fixing seat 9 is fixedly connected to the top of the first support seat 8 by bolts. The first support seat 8 is provided to support the fixing seat 9 and provide a stable mounting base for the servo motor 10. The fixing seat 9 is provided to fix the servo motor 10 and make the servo motor 10 securely installed.

[0027] A servo motor 10 is fixedly connected to the top of the fixed base 9, and a second support base 11 is provided on one side of the first support base 8. When the servo motor 10 rotates, it drives the connecting rod 13 to rotate. The second support base 11 is used to support the mounting frame 12 and provide stable support for the mounting frame 12.

[0028] The top of the second support base 11 is fixedly connected to the mounting frame 12, and the output end of the servo motor 10 is fixedly connected to the connecting rod 13. The mounting frame 12 is set to provide installation space for the gear 14 transmission, and the connecting rod 13 is set to transmit the power of the servo motor 10 to the gear 14, thereby driving the fixed rod 15 to rotate.

[0029] Three gears 14 are fixedly connected to the outer side of the connecting rod 13, and the three gears 14 mesh in sequence. The outer side of the connecting rod 13 is rotatably connected to the inner wall of the mounting frame 12. The three gears 14 distribute and transmit power to the fixed rod 15 through sequential transmission, thereby driving the conveyor shaft 17 to rotate.

[0030] A fixing rod 15 is fixedly connected to the inner wall of the gear 14, and one end of the fixing rod 15 is rotatably connected to the inner wall of the mounting frame 12. The fixing rod 15 is used to transmit the power of the gear 14 to the connecting column 16, thereby driving the conveying shaft 17 to rotate and convey the heated polyethylene raw material.

[0031] One end of the fixed rod 15 is fixedly connected to the connecting column 16, and one end of the connecting column 16 is rotatably connected to the inner wall of the conveying cylinder 5; the connecting column 16 is used to transmit power to the conveying shaft 17.

[0032] Workflow: The output of the servo motor 10 rotates, driving the connecting rod 13 to rotate within the mounting frame 12. Because three sequentially meshing gears 14 are fixed on the outside of the connecting rod 13, when the connecting rod 13 rotates, the three gears 14 rotate synchronously. The gears 14 drive the fixed rod 15, which is fixedly connected to them, to rotate within the mounting frame 12. The fixed rod 15 then drives the connecting column 16 to rotate. The connecting column 16 transmits power to the conveying shaft 17, causing the conveying shaft 17 to start rotating. The conveying shaft 17, with its spiral structure, pushes the polyethylene raw material entering the conveying cylinder 5 to move in the extrusion direction. At the same time, the cleaning component 7, which rotates with the conveying shaft 17, cleans the inner wall of the conveying cylinder 5, ensuring smooth and uniform material conveying.

[0033] One end of the connecting column 16 is fixedly connected to a conveying shaft 17 for conveying polyethylene raw materials, and both ends of the conveying shaft 17 are fixedly connected to the inner walls of the two mounting plates 73 respectively; the conveying shaft 17 rotates under the drive of the connecting column 16, conveying polyethylene raw materials and driving the cleaning component 7 to clean the attached materials.

[0034] The top of the support plate 2 is fixedly connected to a first fixing ring 18 for supporting the conveying cylinder 5. The top of the first fixing ring 18 is fixedly connected to a second fixing ring 19 by bolts, and the second fixing ring 19 and the first fixing ring 18 are combined to form a circular groove. The first fixing ring 18 is used to support the conveying cylinder 5, and the second fixing ring 19 is fixedly connected to the top of the first fixing ring 18 by bolts to form a circular groove. In use, the conveying cylinder 5 is fixed in the circular groove, and then the first fixing ring 18 and the second fixing ring 19 are tightened by bolts to support and fix the conveying cylinder 5, thereby enhancing the stability of the conveying cylinder 5.

[0035] The inner wall of the conveying cylinder 5 is connected to the feed pipe 21, and the outer side of the feed pipe 21 penetrates the inner wall of the mounting sleeve 3. The top of the feed pipe 21 is fixedly connected to the feed hopper 22 by bolts. The feed pipe 21 facilitates the entry of polyethylene raw materials into the conveying cylinder 5. The feed hopper 22 is the inlet for the raw materials to enter the extruder, which facilitates the addition of polyethylene raw materials and allows the polyethylene raw materials to enter the conveying cylinder 5.

[0036] Working principle: The operator pours the polyethylene raw material to be processed into the feed hopper 22. Under the action of gravity, the raw material enters the conveying cylinder 5 through the feed pipe 21, preparing for subsequent conveying and melting. Then, the servo motor 10 on the fixed base 9 is started. The servo motor 10 starts to run, and its output end drives the connecting rod 13 to rotate in the mounting frame 12. Since there are three sequentially meshing gears 14 fixed on the outside of the connecting rod 13, when the connecting rod 13 rotates, it will drive the three gears 14 to rotate synchronously. The rotation of the gears 14 will drive the fixed rod 15, which is fixedly connected to the inner wall, to rotate in the mounting frame 12. The fixed rod 15 will further drive the connecting column 16 to rotate, and finally transmit the power to the conveying shaft 17, so that the conveying shaft 17 starts to rotate. During the rotation of the conveying shaft 17, on the one hand, its spiral structure conveys the polyethylene raw material entering the conveying cylinder 5, pushing the raw material to move in the extrusion direction. On the other hand, the mounting discs 73 at both ends of the conveying shaft 17 rotate together with it. The mounting discs 73 drive multiple plates through the connecting block 72. The annularly distributed copper scrapers 71 slide along the inner wall of the conveying cylinder 5. During the sliding process, the copper scrapers 71 scrape and clean the adhering substances on the inner wall of the conveying cylinder 5, keeping the inner wall clean and ensuring the smoothness and uniformity of the raw material conveying. At the same time, the heat-conducting component 6 is activated, the fan 65 is turned on, and the air is blown. Multiple heating strips 63 and heating plates 64 in the ventilation frame 62 are energized and heat up, heating the airflow. The heated airflow is transferred to the heat-conducting plate 4 through the heat-conducting groove 20 on the connecting plate 61. The heat-conducting plate 4 then conducts the heat to the conveying cylinder 5, causing the polyethylene raw material in the conveying cylinder 5 to gradually heat up and melt. Since the heat-conducting component 6 is located on the outside of the conveying cylinder 5, and the heat-conducting plate 4 is wrapped around the outside of the conveying cylinder 5, the heat is transferred from multiple directions, making the raw material in the conveying cylinder 5 heated evenly, effectively improving the uniformity of the raw material plasticization. After being conveyed and melted, the polyethylene raw material is conveyed to the extrusion die under the continuous push of the conveying shaft 17, and finally extruded into a continuous and uniform film preform, completing the entire extrusion process.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A puncture-resistant high-strength polyethylene film extruder, comprising a base (1), characterized in that, Also includes: Two support plates (2) are fixed to the top of the base (1). Two mounting sleeves (3) are fixedly connected to the top of the support plates (2). The inner walls of the two mounting sleeves (3) are fixed with conveying cylinders (5) by bolts. A heat-conducting plate (4) is fixedly connected to the outer side of the conveying cylinders (5). A heat-conducting component (6) is disposed on the outside of the heat-conducting plate (4). The heat-conducting component (6) includes a connecting plate (61) fixedly installed on the outside of the heat-conducting plate (4). A ventilation frame (62) is fixedly connected to the bottom of the connecting plate (61). A plurality of heating strips (63) are fixedly connected to the inner wall of the ventilation frame (62). A heating plate (64) is fixedly connected to the inner wall of the heating strips (63). A fan (65) is connected to the bottom of the ventilation frame (62). A heat-conducting groove (20) is formed on the inner wall of the connecting plate (61); The cleaning component (7) is located inside the conveying cylinder (5). The cleaning component (7) includes multiple copper scrapers (71) that slide on the inner wall of the conveying cylinder (5). The multiple copper scrapers (71) are arranged in a ring. A connecting block (72) is fixedly connected to one side of the copper scraper (71). An installation plate (73) is fixedly connected to one side of the connecting block (72). There are two installation plates (73).

2. The puncture-resistant high-strength polyethylene film extruder according to claim 1, characterized in that: A first support seat (8) is provided on one side of the base (1), and a fixed seat (9) is fixedly connected to the top of the first support seat (8) by bolts.

3. The puncture-resistant high-strength polyethylene film extruder according to claim 2, characterized in that: A servo motor (10) is fixedly connected to the top of the fixed base (9), and a second support base (11) is provided on one side of the first support base (8).

4. The puncture-resistant high-strength polyethylene film extruder according to claim 3, characterized in that: The top of the second support base (11) is fixedly connected to a mounting frame (12), and the output end of the servo motor (10) is fixedly connected to a connecting rod (13).

5. The puncture-resistant high-strength polyethylene film extruder according to claim 4, characterized in that: Three gears (14) are fixedly connected to the outside of the connecting rod (13), and the three gears (14) mesh in sequence. The outside of the connecting rod (13) is rotatably connected to the inner wall of the mounting frame (12).

6. The puncture-resistant high-strength polyethylene film extruder according to claim 5, characterized in that: The inner wall of the gear (14) is fixedly connected to a fixing rod (15), and one end of the fixing rod (15) is rotatably connected to the inner wall of the mounting frame (12).

7. The puncture-resistant high-strength polyethylene film extruder according to claim 6, characterized in that: One end of the fixed rod (15) is fixedly connected to a connecting column (16), and one end of the connecting column (16) is rotatably connected to the inner wall of the conveying cylinder (5).

8. The puncture-resistant high-strength polyethylene film extruder according to claim 7, characterized in that: One end of the connecting column (16) is fixedly connected to a conveying shaft (17) for conveying polyethylene raw materials, and both ends of the conveying shaft (17) are fixedly connected to the inner walls of the two mounting plates (73).

9. The puncture-resistant high-strength polyethylene film extruder according to claim 1, characterized in that: The top of the support plate (2) is fixedly connected to a first fixing ring (18) for supporting the conveying cylinder (5). The top of the first fixing ring (18) is fixedly connected to a second fixing ring (19) by bolts, and the second fixing ring (19) and the first fixing ring (18) are combined to form a circular groove.

10. The puncture-resistant high-strength polyethylene film extruder according to claim 1, characterized in that: The inner wall of the conveying cylinder (5) is connected to the feed pipe (21), and the outer side of the feed pipe (21) penetrates the inner wall of the mounting sleeve (3). The top of the feed pipe (21) is fixedly connected to the feed hopper (22) by bolts.

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