High-strength PE wrapping film multi-layer co-extrusion blow molding equipment and production process

Abstract

The invention belongs to the technical field of blow molding equipment, and discloses high-strength PE wrapping film multi-layer co-extrusion blow molding equipment and a production technology.The high-strength PE wrapping film multi-layer co-extrusion blow molding equipment comprises a blow molding equipment body, a co-extrusion box is fixedly installed at the top of the blow molding equipment body, a feeding pipe is installed at the top end of the co-extrusion box, and a filter screen is fixedly installed in the feeding pipe; dispersing components are arranged at the top ends of the filter screens; the dispersing assembly comprises a dispersing box arranged at the top end of the filter screen, a dispersing top plate and a dispersing bottom plate are installed in the dispersing box, during work, when materials enter the feeding pipe, a second motor is started to drive a first rotating shaft to rotate to drive the dispersing box to rotate, and the dispersing box rotates to drive the dispersing top plate and the dispersing bottom plate in the dispersing box to rotate together; the dispersing bottom plate transversely moves along with the rotation of the dispersing box and is matched with the first spring to realize a reciprocating motion effect, so that agglomerated materials are dispersed, the mechanical property fluctuation of a film is favorably reduced, and the processing quality of equipment is improved.

Description

Technical Field

[0001] This invention belongs to the field of blow molding equipment technology, specifically a high-strength PE stretch film multilayer co-extrusion blow molding equipment and production process. Background Technology

[0002] High-strength PE stretch film is a high-performance packaging material made of polyethylene (PE) as the main raw material and processed through special technology. It is widely used in logistics, warehousing, industrial manufacturing and other fields. A search revealed patent CN114589903B, which describes a production equipment for multilayer co-extruded packaging film for infusion. The equipment includes a base, a blow molding machine fixedly mounted on the top surface of the base, an instrument plate fixedly mounted on the top surface of the blow molding machine, and a first drive motor fixedly mounted on the top surface of the instrument plate. One end of the rotating shaft of the first drive motor is fixedly connected to a first coupling. During use, a dual-shaft cylinder is activated to drive a moving plate through a push column, pulling two co-extrusion boxes together. This causes two mounting slots to connect to the first coupling, and the two co-extrusion slots enclose a spiral rod. The first drive motor is then activated to rotate the spiral rod inside the co-extrusion slots, allowing the material to enter the blow molding machine through a connecting pipe and be blow-molded. When maintenance and cleaning are required, the dual-shaft cylinder is activated to drive the moving plate through the push column, separating the two co-extrusion boxes for easier maintenance and cleaning. Traditional PE stretch film production mostly employs a direct co-extrusion process. However, nanofillers (such as SiO2 and CaCO3) or functional additives (UV protectants and antistatic agents) are prone to agglomeration. If these are directly poured into the equipment for production, it can easily lead to fluctuations in the mechanical properties of the film (thickness deviation > ±5%), making it difficult to meet the requirements of high-strength packaging. Summary of the Invention

[0003] The purpose of this invention is to provide a high-strength PE stretch film multilayer co-extrusion blow molding equipment and production process to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-strength PE stretch film multilayer co-extrusion blow molding equipment, comprising a blow molding equipment body, a co-extrusion box fixedly installed on the top of the blow molding equipment body, a feed pipe installed on the top of the co-extrusion box, a filter screen fixedly installed inside the feed pipe, and a dispersing component provided on the top of the filter screen; The co-extrusion box is equipped with a conveying auger that rotates inside, and one end of the conveying auger is fixedly connected to a first motor. The dispersion assembly includes a dispersion box disposed at the top of the filter screen. A dispersion top plate and a dispersion bottom plate are installed inside the dispersion box. A slider is fixedly connected to the bottom end of the dispersion bottom plate. The slider passes through the bottom of the dispersion box and is embedded in the inner wall of a guide groove. The guide groove is opened at the top of the filter screen. A first rotating shaft is fixedly connected to the bottom end of the dispersion box. A second motor is installed at the bottom end of the first rotating shaft. The second motor is disposed inside a base. The base is fixedly installed inside the feed pipe. The dispersing base plate is slidably installed inside the dispersing box, and a first spring is provided between the dispersing base plate and the dispersing box.

[0005] As a further technical solution of the present invention, a dispersion cover is provided below the filter screen, and the dispersion cover is fixedly installed on the outer wall of the first rotating shaft.

[0006] As a further technical solution of the present invention, the outer ring at the bottom of the base is provided with through holes evenly distributed.

[0007] As a further technical solution of the present invention, a side plate is provided on one side of the dispersion box, a second rotating shaft is fixedly installed on the inner wall of the side plate, the second rotating shaft is embedded in the inner wall of the dispersion box, and a torsion spring is installed on the outer wall of the second rotating shaft.

[0008] As a further technical solution of the present invention, a sliding rod is fixedly connected to one end of the dispersing top plate. The sliding rod is slidably installed on the inner wall of the trough and the protrusion. The trough and the protrusion are both opened on the inner wall of the feed pipe.

[0009] As a further technical solution of the present invention, the top of the dispersing top plate is uniformly installed with limiting shafts, the limiting shafts are slidably installed on the inner wall of the dispersing box, a fixing plate is fixedly connected to one side of one of the limiting shafts, a guide plate is provided on one side of the fixing plate, a connecting plate is provided at the end of the guide plate away from the fixing plate, a rack plate is fixedly installed at one end of the connecting plate, a gear is meshed on one side of the rack plate, and the gear is fixedly installed at one end of the second rotating shaft.

[0010] As a further technical solution of the present invention, the guide plate is slidably installed on the inner wall of the dispersion box, and a second spring is provided on one side of the guide plate.

[0011] As a further technical solution of the present invention, a protective ring is fixedly installed on the outer wall of the dispersion box, and the protective ring is rotatably installed on the inner wall of the feed pipe.

[0012] As a further technical solution of the present invention, a connecting strap is fixedly connected to one side of the dispersion top plate, and the top end of the connecting strap is fixedly connected to the inner wall of the dispersion box.

[0013] A production process for a high-strength PE stretch film multilayer co-extrusion blow molding equipment includes the following steps: S1: During operation, the raw material is first put into the feed pipe, and at the same time, the second motor is started to drive the first rotating shaft to rotate. The rotation of the first rotating shaft drives the dispersion box to rotate. When the dispersion box rotates, it drives the internal dispersion top plate and dispersion bottom plate to rotate together. The material on the top of the filter screen enters the gap between the dispersion bottom plate and the dispersion top plate. S2: When the dispersing base plate rotates, it drives the slider to slide on the inner wall of the guide groove. The concave and convex guides the dispersing base plate to move laterally as it rotates with the dispersing box. At the same time, it works with the first spring to achieve the effect of reciprocating movement, thereby dispersing the agglomerated materials. S3: When the dispersion box rotates, the slide bar slides in the inner wall of the chute. When the slide bar moves to the protrusion, it moves up and down once guided by the protrusion. The movement of the slide bar drives the movement of the dispersion top plate, causing the dispersion top plate to move away from the dispersion bottom plate. The space between the two increases. At the same time, when the dispersion top plate moves up, it drives the movement of the limiting shaft. When the limiting shaft moves up, it drives the fixed plate to move up. When the fixed plate moves up, it forces the guide plate to move to one side. The movement of the guide plate drives the connecting plate to move down. The movement of the connecting plate drives the rack plate to move. The movement of the rack plate drives the gear to rotate. The rotation of the gear drives the rotation of the second rotating shaft. The rotation of the second rotating shaft drives the side plate to rotate and open away from the dispersion box, so that the dispersed material inside the dispersion box is discharged from one side of the side plate. S4: When the slide bar moves down the inner wall of the protrusion, it drives the top plate of the dispersion to move down, thereby dispersing the material that subsequently enters between the top plate and the bottom plate of the dispersion. S5: When the material enters the space between the dispersion hood and the feed pipe after being filtered by the filter screen, the first rotating shaft drives the dispersion hood to rotate, so that the dispersion hood can further disperse the material. S6: After the material is dispersed, it enters the co-extrusion box. At the same time, the first motor is started to drive the conveying auger to rotate. When the conveying auger rotates, it comes into contact with the material to achieve the effect of fully mixing and extruding the material. The material enters the blow molding equipment body through the connecting pipe to be blow molded.

[0014] The beneficial effects of this invention are as follows: This invention, through the arrangement of the dispersion component, operates by first feeding the raw material into the co-extrusion box through the feed pipe, and simultaneously starting the first motor to drive the conveying auger to rotate. The rotating auger contacts the material, achieving thorough mixing and extrusion. The material then enters the blow molding equipment body through the connecting pipe for blow molding. When the material enters the feed pipe, the second motor drives the first rotating shaft to rotate. The rotation of the first rotating shaft drives the dispersion box to rotate, causing the internal dispersion top plate and dispersion bottom plate to rotate together. The material at the top of the filter screen enters the gap between the dispersion bottom plate and the dispersion top plate. When the dispersion bottom plate rotates, it causes the slider to slide along the inner wall of the guide groove. The concave and convex guides of the inner wall of the guide groove cause the dispersion bottom plate to move laterally as it rotates with the dispersion box. Simultaneously, it works with the first spring to achieve a reciprocating movement effect, thereby dispersing the agglomerated material, helping to reduce fluctuations in the mechanical properties of the film, and thus improving the processing quality of the equipment.

[0015] The present invention uses a dispersing hood that rotates inside the feed pipe. When the material enters between the dispersing hood and the feed pipe after being filtered by the filter screen, the rotation of the first rotating shaft drives the dispersing hood to rotate, so that the dispersing hood can further disperse the material and ensure that the agglomerated material is completely dispersed.

[0016] This invention utilizes a side plate rotation opening mechanism. When the top dispersion plate moves upward, it drives the movement of the limiting shaft. The upward movement of the limiting shaft drives the upward movement of the fixing plate. The upward movement of the fixing plate forces the guide plate to move to one side. The movement of the guide plate drives the downward movement of the connecting plate. The movement of the connecting plate drives the movement of the rack plate. The movement of the rack plate drives the rotation of the gear. The rotation of the gear drives the rotation of the second rotating shaft. The rotation of the second rotating shaft causes the side plate to rotate and open away from the dispersion box, allowing the dispersed material inside the dispersion box to be discharged from one side of the side plate. Attached Figure Description

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic cross-sectional view of the feed pipe structure of the present invention; Figure 5 This is a schematic cross-sectional view of the dispersion cover of the present invention; Figure 6 This is a schematic cross-sectional view of the protective ring structure of the present invention; Figure 7 This is a schematic cross-sectional view of the dispersion box structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B.

[0018] In the diagram: 1. Main body of blow molding equipment; 2. Co-extrusion box; 3. Feed pipe; 4. Conveying auger; 5. First motor; 6. Filter screen; 7. Base; 8. Second motor; 9. First rotating shaft; 10. Dispersion box; 11. Dispersion top plate; 12. Dispersion bottom plate; 13. Slider; 14. Guide groove; 15. First spring; 16. Limiting shaft; 17. Sliding rod; 18. Sliding groove; 19. Protrusion; 20. Protective ring; 21. Side plate; 22. Second rotating shaft; 23. Connecting belt; 24. Fixing plate; 25. Guide plate; 26. Second spring; 27. Connecting plate; 28. Rack plate; 29. ​​Gear; 30. Torsion spring; 31. Dispersion cover; 32. Through hole. Detailed Implementation

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] like Figures 1 to 8 As shown in the embodiment of the present invention, a high-strength PE stretch film multilayer co-extrusion blow molding equipment includes a blow molding equipment body 1, a co-extrusion box 2 is fixedly installed on the top of the blow molding equipment body 1, a feed pipe 3 is installed on the top of the co-extrusion box 2, a filter screen 6 is fixedly installed inside the feed pipe 3, and a dispersion component is provided on the top of the filter screen 6. A conveying auger 4 is rotatably installed inside the co-extrusion box 2, and a first motor 5 is fixedly connected to one end of the conveying auger 4. The dispersion assembly includes a dispersion box 10 disposed at the top of the filter screen 6. A dispersion top plate 11 and a dispersion bottom plate 12 are installed inside the dispersion box 10. A slider 13 is fixedly connected to the bottom end of the dispersion bottom plate 12. The slider 13 passes through the bottom of the dispersion box 10 and is embedded in the inner wall of the guide groove 14. The guide groove 14 is opened at the top of the filter screen 6. A first rotating shaft 9 is fixedly connected to the bottom end of the dispersion box 10. A second motor 8 is installed at the bottom end of the first rotating shaft 9. The second motor 8 is disposed inside the base 7. The base 7 is fixedly installed inside the feed pipe 3. The dispersion base plate 12 is slidably installed inside the dispersion box 10, and a first spring 15 is provided between the dispersion base plate 12 and the dispersion box 10.

[0021] The existing patent CN114589903B discloses a production equipment for multilayer co-extruded packaging film for infusion. This patent discloses the blow molding equipment body 1, co-extrusion box 2, conveying auger 4 and first motor 5 proposed in this application. The technical means will not be described in detail here. One end of the co-extrusion box 2 is provided with a connecting pipe that connects to the main body 1 of the blow molding equipment; The first rotating shaft 9 is rotatably connected to the filter screen 6; During operation, the raw material is first fed into the co-extrusion box 2 through the feed pipe 3. At the same time, the first motor 5 is started to drive the conveying auger 4 to rotate. When the conveying auger 4 rotates, it comes into contact with the material to achieve the effect of fully mixing and extruding the material. The material enters the blow molding equipment body 1 through the connecting pipe for blow molding. When the material enters the feed pipe 3, the first rotating shaft 9 is driven to rotate by starting the second motor 8. The rotation of the first rotating shaft 9 drives the dispersion box 10 to rotate. When the dispersion box 10 rotates, it drives the internal dispersion top plate 11 and dispersion bottom plate 12 to rotate together. The material at the top of the filter screen 6 enters the gap between the dispersion bottom plate 12 and the dispersion top plate 11. When the dispersing base plate 12 rotates, it drives the slider 13 to slide on the inner wall of the guide groove 14. The concave and convex guides of the inner wall of the guide groove 14 cause the dispersing base plate 12 to move laterally as it rotates with the dispersing box 10. At the same time, it works with the first spring 15 to achieve a reciprocating movement effect, thereby dispersing the agglomerated material, which helps to reduce the fluctuation of the mechanical properties of the film and thus improve the processing quality of the equipment.

[0022] like Figures 2 to 5 As shown, a dispersion cover 31 is provided below the filter screen 6, and the dispersion cover 31 is fixedly installed on the outer wall of the first rotating shaft 9.

[0023] The outer wall of the dispersion cover 31 is uniformly covered with uneven protrusions; When the material enters the space between the dispersion hood 31 and the feed pipe 3 after being filtered by the filter screen 6, the first rotating shaft 9 drives the dispersion hood 31 to rotate, so that the dispersion hood 31 can further disperse the material and ensure that the agglomerated material is completely dispersed.

[0024] like Figure 4 As shown, the outer ring at the bottom of the base 7 has through holes 32 evenly distributed.

[0025] like Figures 5 to 8 As shown, a side plate 21 is provided on one side of the dispersion box 10, and a second rotating shaft 22 is fixedly installed on the inner wall of the side plate 21. The second rotating shaft 22 is embedded in the inner wall of the dispersion box 10, and a torsion spring 30 is installed on the outer wall of the second rotating shaft 22.

[0026] The elastic potential energy of the torsion spring 30 causes the side plate 21 to tend to move toward the dispersion box 10, thus closing one side opening.

[0027] like Figure 4 As shown, a slide rod 17 is fixedly connected to one end of the dispersion top plate 11. The slide rod 17 is slidably installed on the inner wall of the slide groove 18 and the protrusion 19. The slide groove 18 and the protrusion 19 are both opened on the inner wall of the feed pipe 3.

[0028] When the dispersion box 10 rotates, the slide rod 17 slides in the inner wall of the slide groove 18. When the slide rod 17 moves to the protrusion 19, it moves up and down once guided by it. The movement of the slide rod 17 drives the movement of the dispersion top plate 11, causing the dispersion top plate 11 to move away from the dispersion bottom plate 12, thus increasing the space between the two.

[0029] like Figures 5 to 8 As shown, limiting shafts 16 are evenly installed on the top of the dispersion top plate 11. The limiting shafts 16 are slidably installed on the inner wall of the dispersion box 10. A fixing plate 24 is fixedly connected to one side of one of the limiting shafts 16. A guide plate 25 is provided on one side of the fixing plate 24. A connecting plate 27 is provided at the end of the guide plate 25 away from the fixing plate 24. A rack plate 28 is fixedly installed at one end of the connecting plate 27. A gear 29 is meshed on one side of the rack plate 28. The gear 29 is fixedly installed at one end of the second rotating shaft 22.

[0030] When the top plate 11 moves upward, it drives the movement of the limiting shaft 16. When the limiting shaft 16 moves upward, it drives the fixed plate 24 to move upward. When the fixed plate 24 moves upward, it forces the guide plate 25 to move to one side. The movement of the guide plate 25 drives the connecting plate 27 to move downward. The movement of the connecting plate 27 drives the rack plate 28 to move. The movement of the rack plate 28 drives the gear 29 to rotate. The rotation of the gear 29 drives the rotation of the second rotating shaft 22. The rotation of the second rotating shaft 22 drives the side plate 21 to rotate and open to the side away from the dispersion box 10, so that the dispersed material inside the dispersion box 10 is discharged from the side plate 21.

[0031] Both the top dispersion plate 11 and the bottom dispersion plate 12 are inclined to one side of the side plate 21. The inclination guides the material, making it easier for the dispersed material to be discharged from the side plate 21.

[0032] like Figure 7 and Figure 8 As shown, the guide plate 25 is slidably installed on the inner wall of the dispersion box 10, and a second spring 26 is provided on one side of the guide plate 25.

[0033] When the fixed plate 24 moves upward, causing the guide plate 25 to move, the second spring 26 deforms and stores elastic potential energy. When the fixed plate 24 moves downward, the elastic potential energy is released through the second spring 26, causing the guide plate 25 to move and reset.

[0034] When the side plate 21 is rotated to the side away from the dispersion box 10, the torsion spring 30 deforms and stores elastic potential energy, and releases the elastic potential energy to make the side plate 21 rotate back to its original position.

[0035] like Figure 3 , Figure 4 and Figure 6 As shown, a protective ring 20 is fixedly installed on the outer wall of the dispersion box 10, and the protective ring 20 is rotatably installed on the inner wall of the feed pipe 3.

[0036] The protective ring 20 is located on one side of the chute 18 and the protrusion 19 to protect them and prevent materials from entering.

[0037] like Figure 5 , Figure 6 and Figure 7 As shown, a connecting strap 23 is fixedly connected to one side of the dispersion top plate 11, and the top end of the connecting strap 23 is fixedly connected to the inner wall of the dispersion box 10.

[0038] The connecting belt 23 is flexibly designed to ensure that one side of the dispersing top plate 11 is connected to the inner wall of the dispersing box 10 when the dispersing top plate 11 moves up and down, preventing material from entering the top of the dispersing top plate 11.

[0039] A production process for a high-strength PE stretch film multilayer co-extrusion blow molding equipment includes the following steps: S1: During operation, the raw material is first put into the feed pipe 3. At the same time, the second motor 8 is started to drive the first rotating shaft 9 to rotate. The rotation of the first rotating shaft 9 drives the dispersion box 10 to rotate. When the dispersion box 10 rotates, it drives the internal dispersion top plate 11 and dispersion bottom plate 12 to rotate together. The material on the top of the filter screen 6 enters the gap between the dispersion bottom plate 12 and the dispersion top plate 11. S2: When the dispersing base plate 12 rotates, it drives the slider 13 to slide on the inner wall of the guide groove 14. The dispersing base plate 12 moves laterally as it rotates with the dispersing box 10 through the concave and convex guidance of the inner wall of the guide groove 14. At the same time, it works with the first spring 15 to achieve the effect of reciprocating movement, thereby dispersing the agglomerated materials. S3: When the dispersion box 10 rotates, the slide rod 17 slides in the inner wall of the slide groove 18. When the slide rod 17 moves to the protrusion 19, it moves up and down once guided by it. The movement of the slide rod 17 drives the movement of the dispersion top plate 11, causing the dispersion top plate 11 to move away from the dispersion bottom plate 12, increasing the space between the two. At the same time, when the dispersion top plate 11 moves up, it drives the movement of the limiting shaft 16. When the limiting shaft 16 moves up, it drives the fixed plate 24 to move up. When the fixed plate 24 moves up, it forces the guide plate 25 to move to one side. The movement of the guide plate 25 drives the connecting plate 27 to move down. The movement of the connecting plate 27 drives the rack plate 28 to move. The movement of the rack plate 28 drives the gear 29 to rotate. The rotation of the gear 29 drives the rotation of the second rotating shaft 22. The rotation of the second rotating shaft 22 drives the side plate 21 to rotate and open away from the dispersion box 10, so that the material that has been dispersed inside the dispersion box 10 is discharged from the side plate 21. S4: When the slide bar 17 moves down the inner wall of the protrusion 19, it drives the dispersing top plate 11 to move down, thereby dispersing the material that subsequently enters between the dispersing top plate 11 and the dispersing bottom plate 12. S5: When the material enters the space between the dispersion hood 31 and the feed pipe 3 after being filtered by the filter screen 6, the first rotating shaft 9 drives the dispersion hood 31 to rotate, so that the dispersion hood 31 can disperse the material again. S6: After the material is dispersed, it enters the co-extrusion box 2. At the same time, the first motor 5 is started to drive the conveying auger 4 to rotate. When the conveying auger 4 rotates, it comes into contact with the material to achieve the effect of fully mixing and extruding the material. The material enters the blow molding equipment body 1 through the connecting pipe to be blow molded.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength PE stretch film multilayer co-extrusion blow molding equipment, comprising a blow molding equipment body (1), characterized in that: A co-extrusion box (2) is fixedly installed on the top of the blow molding equipment body (1). A feed pipe (3) is installed on the top of the co-extrusion box (2). A filter screen (6) is fixedly installed inside the feed pipe (3). A dispersion component is provided on the top of the filter screen (6). The co-extrusion box (2) is rotatably installed inside, and a first motor (5) is fixedly connected to one end of the conveying auger (4). The dispersion assembly includes a dispersion box (10) disposed at the top of the filter screen (6). A dispersion top plate (11) and a dispersion bottom plate (12) are installed inside the dispersion box (10). A slider (13) is fixedly connected to the bottom end of the dispersion bottom plate (12). The slider (13) passes through the bottom of the dispersion box (10) and is embedded in the inner wall of the guide groove (14). The guide groove (14) is opened at the top of the filter screen (6). A first rotating shaft (9) is fixedly connected to the bottom end of the dispersion box (10). A second motor (8) is installed at the bottom end of the first rotating shaft (9). The second motor (8) is disposed inside the base (7). The base (7) is fixedly installed inside the feed pipe (3). The dispersing base plate (12) is slidably installed inside the dispersing box (10), and a first spring (15) is provided between the dispersing base plate (12) and the dispersing box (10).

2. The high-strength PE stretch film multilayer co-extrusion blow molding equipment according to claim 1, characterized in that: A dispersion cover (31) is provided below the filter screen (6), and the dispersion cover (31) is fixedly installed on the outer wall of the first rotating shaft (9).

3. The high-strength PE stretch film multilayer co-extrusion blow molding equipment according to claim 1, characterized in that: The base (7) has through holes (32) evenly distributed on the outer ring at the bottom.

4. The high-strength PE stretch film multilayer co-extrusion blow molding equipment according to claim 1, characterized in that: A side plate (21) is provided on one side of the dispersion box (10). A second rotating shaft (22) is fixedly installed on the inner wall of the side plate (21). The second rotating shaft (22) is embedded in the inner wall of the dispersion box (10). A torsion spring (30) is installed on the outer wall of the second rotating shaft (22).

5. The high-strength PE stretch film multilayer co-extrusion blow molding equipment according to claim 1, characterized in that: One end of the dispersion top plate (11) is fixedly connected to a slide rod (17), which is slidably installed on the inner wall of the chute (18) and the protrusion (19). The chute (18) and the protrusion (19) are both opened on the inner wall of the feed pipe (3).

6. The high-strength PE stretch film multilayer co-extrusion blow molding equipment according to claim 1, characterized in that: Limiting shafts (16) are evenly installed on the top of the dispersion top plate (11). The limiting shafts (16) are slidably installed on the inner wall of the dispersion box (10). A fixing plate (24) is fixedly connected to one side of one of the limiting shafts (16). A guide plate (25) is provided on one side of the fixing plate (24). A connecting plate (27) is provided at the end of the guide plate (25) away from the fixing plate (24). A rack plate (28) is fixedly installed at one end of the connecting plate (27). A gear (29) is meshed on one side of the rack plate (28). The gear (29) is fixedly installed at one end of the second rotating shaft (22).

7. The high-strength PE stretch film multilayer co-extrusion blow molding equipment according to claim 6, characterized in that: The guide plate (25) is slidably installed on the inner wall of the dispersion box (10), and a second spring (26) is provided on one side of the guide plate (25).

8. The high-strength PE stretch film multilayer co-extrusion blow molding equipment according to claim 1, characterized in that: A protective ring (20) is fixedly installed on the outer wall of the dispersion box (10), and the protective ring (20) is rotatably installed on the inner wall of the feed pipe (3).

9. A high-strength PE stretch film multilayer co-extrusion blow molding equipment according to claim 1, characterized in that: A connecting strap (23) is fixedly connected to one side of the dispersion top plate (11), and the top end of the connecting strap (23) is fixedly connected to the inner wall of the dispersion box (10).

10. A production process for a high-strength PE stretch film multilayer co-extrusion blow molding equipment, the method being applicable to the high-strength PE stretch film multilayer co-extrusion blow molding equipment described in claims 1-9 above, characterized in that... Includes the following steps: S1: When working, the raw material is first put into the feed pipe (3), and at the same time, the first rotating shaft (9) is driven to rotate by starting the second motor (8). The rotation of the first rotating shaft (9) drives the rotation of the dispersion box (10). When the dispersion box (10) rotates, it drives the internal dispersion top plate (11) and dispersion bottom plate (12) to rotate together. The material on the top of the filter screen (6) enters the gap between the dispersion bottom plate (12) and the dispersion top plate (11). S2: When the dispersing base plate (12) rotates, it drives the slider (13) to slide on the inner wall of the guide groove (14). The dispersing base plate (12) moves laterally when it rotates with the dispersing box (10) through the concave and convex guidance of the inner wall of the guide groove (14), and at the same time, it works with the first spring (15) to achieve the effect of reciprocating movement, thereby dispersing the agglomerated materials. S3: When the dispersion box (10) rotates, the slide rod (17) slides in the inner wall of the slide groove (18). When the slide rod (17) moves to the protrusion (19), it moves up and down once guided by it. The movement of the slide rod (17) drives the movement of the dispersion top plate (11), causing the dispersion top plate (11) to move away from the dispersion bottom plate (12), increasing the space between the two. At the same time, when the dispersion top plate (11) moves upward, it drives the movement of the limiting shaft (16). When the limiting shaft (16) moves upward, it drives the fixed plate (24) to move upward. When the guide plate (25) moves upward, it forces the guide plate (25) to move to one side. The movement of the guide plate (25) causes the connecting plate (27) to move downward. The movement of the connecting plate (27) causes the rack plate (28) to move. The movement of the rack plate (28) causes the gear (29) to rotate. The rotation of the gear (29) causes the second rotating shaft (22) to rotate. The rotation of the second rotating shaft (22) causes the side plate (21) to rotate and open to the side away from the dispersion box (10), so that the material that has been dispersed inside the dispersion box (10) is discharged from the side plate (21). S4: When the slide bar (17) moves down the inner wall of the protrusion (19), it drives the dispersing top plate (11) to move down, dispersing the material that subsequently enters between the dispersing top plate (11) and the dispersing bottom plate (12); S5: When the material enters the space between the dispersion hood (31) and the feed pipe (3) after being filtered by the filter screen (6), the dispersion hood (31) is driven to rotate by the rotation of the first rotating shaft (9), so that the dispersion hood (31) can disperse the material again. S6: After the material is dispersed, it enters the co-extrusion box (2). At the same time, the first motor (5) is started to drive the conveying auger (4) to rotate. When the conveying auger (4) rotates, it comes into contact with the material to achieve the effect of fully mixing and extruding the material. The material enters the blow molding equipment body (1) through the connecting pipe to be blow molded.

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