PE protective film anti-static coating device

Abstract

This utility model discloses an antistatic coating device for PE protective film, belonging to the field of PE protective film processing technology. It includes a base plate, with an adhesive tank fixedly installed at the top. A coating roller is rotatably mounted inside the adhesive tank at its upper end. A first U-shaped frame is fixedly installed on one side of the top of the base plate, with through grooves at both ends and openings at both ends of the first U-shaped frame. In this utility model, the coating roller rotates inside the adhesive tank, and the main stirring shaft and two auxiliary stirring shafts rotate at the same speed, ensuring a uniform coating of adhesive around the circumference of the coating roller. Due to the weight of the pressure roller itself, it carries the second U-shaped frame and two sliding parts to the lower end of the through grooves, causing the PE protective film to be pressed down as it passes through. This results in the bottom end of the PE protective film adhering to the top circumference of the coating roller. The tension of the PE protective film is flexibly adjusted under the action of the pressure roller and the shrinkage cylinder, eliminating wrinkles and ensuring uniform coating at the bottom end of the PE protective film.

Description

Technical Field

[0001] This utility model relates to the field of PE protective film processing technology, and in particular to an antistatic coating device for PE protective film. Background Technology

[0002] Coating is a method of preparing composite materials (films) by applying a paste-like polymer, molten polymer, or polymer melt onto paper, cloth, or plastic film, thereby achieving purposes such as corrosion protection, insulation, and decoration. Coating and laminating equipment is mainly used for the adhesive coating and lamination of various roll substrates such as plastic film, paper, electroplated aluminum, cloth, and leather, and is widely used in various packaging fields, showing broad development prospects. PE protective film is a commonly used protective film, usually made of polyethylene (PE) material, and is widely used for surface protection of various items such as furniture, electronic products, and building materials to prevent scratches, contamination, and damage. Existing PE protective films require coating processing during production to facilitate subsequent use.

[0003] A search revealed a patent with publication number CN220635000U entitled "A Coating Mechanism for Preparing Anti-reflective and Anti-static Optical Protective Film." The technical problem it addresses is that when the film's position shifts on the coating roller, the coating effect is not achieved. The patent addresses this by using a first motor, a double-ended stud, threaded blocks, clamping rods, and a slider. The first motor drives the double-ended stud to rotate, which in turn drives two threaded blocks, which in turn move the corresponding clamping rods. The slider guides the movement of the clamping rods. When the clamping rods on both sides are in contact with the film, the first motor is turned off, and a limiting mechanism limits the film as it passes the outer wall of the guide roller, preventing shifting. This ensures the film's position on the coating roller remains stable during coating. However, the patent still has drawbacks that need to be addressed: the PE film may rotate and experience uneven tension during operation, leading to uneven and inconsistent adhesive application. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a PE protective film antistatic coating device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A PE protective film antistatic coating device includes a base plate, an adhesive tank fixedly installed at the top of the base plate, a coating roller rotatably mounted inside the upper part of the adhesive tank, a first U-shaped frame fixedly installed on one side of the top of the base plate, and through grooves provided at the upper middle of both ends of the first U-shaped frame. Both ends of the top of the first U-shaped frame have openings, and a second U-shaped frame is slidably inserted between the two openings. A shrinkage cylinder is fixedly installed between the bottom of the second U-shaped frame and the top of the first U-shaped frame. A pressure roller is sleeved between the two ends of the bottom of the second U-shaped frame. Multiple equally spaced toothed grooves are provided on the inner walls of both ends of the second U-shaped frame. Resistance gears are rotatably mounted at both ends of the top of the first U-shaped frame via torsion springs. A support frame is rotatably mounted on the upper part of the other side of the outer wall of both ends of the adhesive tank, and a pressure frame is rotatably mounted in the middle of the support frame.

[0007] Preferably, the two ends of the vertical pressure roller are fixedly connected to sliding members, and the sliding members are T-shaped, and the sliding members are slidably sleeved with the through groove.

[0008] Preferably, the circumference of each row of resistance gears meshes with several tooth slots in one row of the second U-shaped frame.

[0009] Preferably, the pressure roller is cam-shaped, and the bottom end of the pressure roller is a pointed tip.

[0010] Preferably, the bottom of the pressure frame is inclined, a rectangular opening is provided on one side of the pressure frame, and a drain port is fixedly provided at one bottom end of the pressure frame.

[0011] Preferably, a main stirring shaft is rotatably mounted at the lower center of the adhesive tank, and pulleys are fixedly mounted at both the input end of the main stirring shaft and the input end of the coating roller. A conveyor belt is sleeved between the two pulleys, and a drive motor is fixedly mounted at the input end of the pulley on the outer side of the coating roller.

[0012] Preferably, auxiliary stirring shafts are rotatably mounted on both sides of the bottom of the glue tank, and multiple mixing rods are provided on the circumference of both the main stirring shaft and the auxiliary stirring shaft. A drive gear is fixedly mounted on the outer wall of the pulley on the outer side of the main stirring shaft, and a transmission gear is fixedly mounted on the input end of the two auxiliary stirring shafts. Driven gears are rotatably mounted on both sides of the bottom of the outer wall of the glue tank, and the circumference of the drive gear meshes with the circumference of the driven gear. The circumference of the driven gear on each side meshes with the circumference of the transmission gear.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model proposes an antistatic coating device for PE protective film. Starting the drive motor causes the coating roller to rotate under the action of the conveyor belt, driving the drive gear to rotate, which in turn drives the driven gear and transmission gear to rotate. The coating roller, located inside the adhesive tank, rotates at the same speed as the main stirring shaft and two auxiliary stirring shafts, ensuring that the circumference of the coating roller is uniformly covered with adhesive. A first U-shaped frame is provided on one side of the adhesive tank. Due to the weight of the pressure roller itself, it carries a second U-shaped frame and two sliding parts to the lower end of the through groove, causing the PE protective film to be pressed down as it passes through. This results in the bottom end of the PE protective film adhering to the top circumference of the coating roller. The tension of the PE protective film is flexibly adjusted under the action of the pressure roller and the shrinkage cylinder, eliminating wrinkles and ensuring uniform coating at the bottom end of the PE protective film. A support frame and a pressure frame are provided on the other side of the adhesive tank, allowing the top end of the PE protective film to be transported along the bottom end of the pressure frame. This helps the PE protective film to effectively contact the top circumference of the coating roller, avoiding uneven coating at the bottom end of the PE protective film.

[0015] 2. The present invention proposes an antistatic coating device for PE protective film, wherein multiple equally spaced toothed grooves are provided on the inner walls of both ends of the second U-shaped frame, and resistance gears are rotatably mounted on both ends of the top of the first U-shaped frame via torsion springs, and the circumference of each row of resistance gears meshes with several toothed grooves in one row of the second U-shaped frame, so that the pressure roller can flexibly rise and fall under the tension change of the PE protective film. The resistance gears increase the resistance to the upward movement of the pressure roller and also help the pressure roller to return to its original position. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an antistatic coating device for PE protective film proposed in this utility model;

[0017] Figure 2 This is a left-side structural schematic diagram of an antistatic coating device for PE protective film proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the main stirring shaft and auxiliary stirring shaft of the PE protective film antistatic coating device proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the pressure frame of a PE protective film antistatic coating device proposed in this utility model.

[0020] In the diagram: 1. Base plate, 2. Adhesive tank, 3. First U-shaped frame, 4. Through groove, 5. Through opening, 6. Vertical pressure roller, 7. Sliding component, 8. Second U-shaped frame, 9. Tooth groove, 10. Shrinking cylinder, 11. Resistance gear, 12. Coating roller, 13. Main stirring shaft, 14. Auxiliary stirring shaft, 15. Mixing rod, 16. Pulley, 17. Conveyor belt, 18. Drive motor, 19. Support frame, 20. Pressure frame, 21. Rectangular opening, 22. Drain outlet, 23. Drive gear, 24. Driven gear, 25. Transmission gear. Detailed Implementation

[0021] Reference Figure 1-4 A PE protective film antistatic coating device includes a base plate 1, an adhesive tank 2 fixedly installed at the top of the base plate 1, and a coating roller 12 rotatably installed inside the upper part of the adhesive tank 2. A first U-shaped frame 3 is fixedly installed on one side of the top of the base plate 1, and through grooves 4 are provided at the upper middle of both ends of the first U-shaped frame 3. Both ends of the top of the first U-shaped frame 3 have openings 5. A second U-shaped frame 8 is slidably inserted between the two openings 5. A shrink cylinder 10 is fixedly installed between the bottom end of the second U-shaped frame 8 and the top end of the first U-shaped frame 3. A pressure roller 6 is sleeved between the two ends of the bottom end of the second U-shaped frame 8. Multiple equally spaced toothed grooves 9 are opened on the inner walls of both ends of the second U-shaped frame 8. Resistance gears 11 are rotatably installed at both ends of the top of the first U-shaped frame 3 through torsion springs. A support frame 19 is rotatably installed at the upper end of the other side of the outer wall of both ends of the adhesive tank 2, and a pressure frame 20 is rotatably installed in the middle of the support frame 19.

[0022] In this utility model, the two ends of the vertical pressure roller 6 are fixedly connected with sliding parts 7, and the sliding parts 7 are T-shaped, and the sliding parts 7 are slidably sleeved with the through groove 4;

[0023] Each row of resistance gears 11 circumferentially meshes with several tooth grooves 9 of one row of the second U-shaped frame 8;

[0024] The vertical pressure roller 6 is cam-shaped, and the bottom end of the vertical pressure roller 6 is a pointed tip;

[0025] The bottom of the pressure frame 20 is inclined, and a rectangular opening 21 is provided on one side of the pressure frame 20. A drain port 22 is fixedly provided at the bottom of one end of the pressure frame 20.

[0026] A main stirring shaft 13 is rotatably mounted at the lower middle of the glue tank 2, and pulleys 16 are fixedly mounted at both the input end of the main stirring shaft 13 and the input end of the coating roller 12. A conveyor belt 17 is sleeved between the two pulleys 16, and a drive motor 18 is fixedly mounted at the input end of the pulley 16 on the outer side of the coating roller 12.

[0027] Auxiliary stirring shafts 14 are rotatably mounted on both sides of the bottom of the glue tank 2. Multiple mixing rods 15 are provided on the circumference of both the main stirring shaft 13 and the auxiliary stirring shaft 14. A drive gear 23 is fixedly mounted on the outer wall of the pulley 16 on the outer side of the main stirring shaft 13. Transmission gears 25 are fixedly mounted on the input ends of the two auxiliary stirring shafts 14. Driven gears 24 are rotatably mounted on both sides of the bottom of the outer wall of the glue tank 2. The circumference of the drive gear 23 meshes with the circumference of the driven gear 24. The circumference of the driven gear 24 on each side meshes with the circumference of the transmission gear 25.

[0028] Working principle: Starting the drive motor 18 causes the coating roller 12 to rotate under the action of the conveyor belt 17, driving the drive gear 23 to rotate, which in turn drives the driven gear 24 and the transmission gear 25 to rotate. The coating roller 12, located inside the adhesive tank 2, rotates at the same speed as the main stirring shaft 13 and the two auxiliary stirring shafts 14, ensuring that the circumference of the coating roller 12 is uniformly covered with adhesive. A first U-shaped frame 3 is provided on one side of the adhesive tank 2. Due to the weight of the pressure roller 6 itself, it carries the second U-shaped frame 8 and two sliding parts 7, which are constantly positioned under the through groove 4. The PE protective film is pressed down as it passes through the coating roller 12, causing the bottom of the PE protective film to adhere to the top edge of the coating roller 12. Under the action of the pressure roller 6 and the shrink cylinder 10, the tension of the PE protective film is flexibly adjusted to eliminate wrinkles and ensure uniform coating at the bottom edge of the PE protective film. On the other side of the adhesive tank 2, there is a support frame 19 and a pressure frame 20, which allows the top edge of the PE protective film to be transported along the bottom edge of the pressure frame 20. This helps the PE protective film to effectively contact the top edge of the coating roller 12 and avoids uneven coating at the bottom edge of the PE protective film.

[0029] Multiple equally spaced toothed grooves 9 are provided on the inner walls of both ends of the second U-shaped frame 8. The top ends of the first U-shaped frame 3 are rotatably mounted with resistance gears 11 via torsion springs. The circumference of each row of resistance gears 11 meshes with several toothed grooves 9 in one row of the second U-shaped frame 8, so that the drooping roller 6 can flexibly rise and fall under the tension change of the PE protective film. The resistance gears 11 increase the resistance to the upward movement of the drooping roller 6 and also help the drooping roller 6 to return to its original position.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A PE protective film antistatic coating device, comprising a base plate (1), wherein an adhesive tank (2) is fixedly installed at the top of the base plate (1), and a coating roller (12) is rotatably arranged inside the upper part of the adhesive tank (2), characterized in that, A first U-shaped frame (3) is fixedly installed on one side of the top of the base plate (1), and a through groove (4) is provided at the upper middle end of both ends of the first U-shaped frame (3). A through opening (5) is opened at both ends of the top of the first U-shaped frame (3). A second U-shaped frame (8) is slidably inserted between the two through openings (5). A shrink cylinder (10) is fixedly installed between the bottom end of the second U-shaped frame (8) and the top end of the first U-shaped frame (3). A vertical pressure roller (6) is sleeved between the two ends of the bottom end of the second U-shaped frame (8). Multiple equally spaced toothed grooves (9) are opened on the inner wall of both ends of the second U-shaped frame (8). A resistance gear (11) is rotatably installed at both ends of the top of the first U-shaped frame (3) through a torsion spring. A support frame (19) is rotatably installed on the upper end of the other side of the outer wall of both ends of the glue tank (2), and a pressure frame (20) is rotatably installed in the middle of the support frame (19).

2. The PE protective film antistatic coating device according to claim 1, characterized in that, The vertical pressure roller (6) has slides (7) fixedly connected to both ends, and the slides (7) are T-shaped and slide in the through groove (4).

3. The PE protective film antistatic coating device according to claim 1, characterized in that, Each row of resistance gears (11) meshes with a number of tooth slots (9) of one row of the second U-shaped frame (8).

4. The PE protective film antistatic coating device according to claim 1, characterized in that, The pressure roller (6) is cam-shaped, and the bottom end of the pressure roller (6) is a pointed tip.

5. The PE protective film antistatic coating device according to claim 1, characterized in that, The bottom of the pressure frame (20) is inclined, and a rectangular opening (21) is provided on one side of the pressure frame (20). A drain port (22) is fixedly provided at one bottom end of the pressure frame (20).

6. The PE protective film antistatic coating device according to claim 1, characterized in that, The adhesive tank (2) has a main stirring shaft (13) rotatably mounted at the middle of its lower end. Both the input end of the main stirring shaft (13) and the input end of the coating roller (12) are fixedly mounted with pulleys (16). A conveyor belt (17) is sleeved between the two pulleys (16). A drive motor (18) is fixedly mounted at the input end of the pulley (16) on the outside of the coating roller (12).

7. The PE protective film antistatic coating device according to claim 6, characterized in that, Auxiliary stirring shafts (14) are rotatably installed on both sides of the bottom of the glue tank (2), and multiple mixing rods (15) are provided on the circumference of the main stirring shaft (13) and the circumference of the auxiliary stirring shaft (14). A drive gear (23) is fixedly installed on the outer wall of the pulley (16) on the outer side of the main stirring shaft (13), and a transmission gear (25) is fixedly installed on the input end of the two auxiliary stirring shafts (14). Driven gears (24) are rotatably installed on both sides of the bottom of the outer wall of the glue tank (2), and the circumference of the drive gear (23) meshes with the circumference of the driven gear (24). The circumference of the driven gear (24) on each side meshes with the circumference of the transmission gear (25).

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