Protective film coating and slitting integrated device

Abstract

The invention relates to the technical field of PVC adhesive tape film processing devices, and discloses a protective film coating and slitting integrated device which comprises a supporting frame, supporting plates are fixedly connected to the front side and the rear side of the supporting frame correspondingly, a first motor is fixedly connected to the exterior of the supporting plate on the front side, and a first gear is fixedly connected to the driving end of the first motor; a second gear is rotatably connected to the interior of the supporting plate on the front side, a third gear is rotatably connected to the interior of the supporting plate on the front side, a rotating plate is fixedly connected to the exterior of the third gear, a convex column is fixedly connected to the exterior of the rotating plate, and a rotating wheel is rotatably connected to the interior of the supporting plate on the front side. According to the intermittent conveying device, the effect of intermittent conveying of the protective film is achieved, by means of the intermittent conveying mode, the protective film can have sufficient time to make full contact with the coating roller in the coating process, it is guaranteed that coating is evenly attached, and the slitting requirements of the protective films of various specifications can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of PVC tape film processing devices, and particularly to an integrated device for coating and slitting a protective film. Background Art

[0002] The PVC tape film is a kind of sticky film material mainly made of polyvinyl chloride, and is commonly used in various scenarios such as packaging, fixing, insulation, protection, etc. The coating and slitting of the protective film are key links in the production process. It is necessary to first evenly coat the protective layer or functional coating on the protective film and then slit it into finished products of specific specifications. The automation degree and processing accuracy of such devices directly affect the production efficiency and product quality. Therefore, there is a significant demand for equipment that can realize the integration of coating and slitting and has the ability of precise control.

[0003] In the prior art, some protective film processing devices usually adopt a continuous transmission mode. During the coating process, the protective film continuously moves, which easily leads to uneven coating of the paint. Especially when dealing with high-viscosity or special material paints, the consistency of the coating thickness is poor. In addition, the linkage between the transmission system and the cutting system of the traditional device is insufficient, and it is difficult to accurately match the coating duration and the slitting position according to different process requirements, resulting in low production flexibility. Therefore, in view of the above problems, an integrated device for coating and slitting a protective film is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated device for coating and slitting a protective film to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides an integrated device for coating and slitting a protective film, including a support frame. Both the front and rear sides of the support frame are fixedly connected with support plates. An electric motor I is fixedly connected to the outside of the front support plate. The driving end of the electric motor I is fixedly connected with a gear I. A gear II is rotatably connected inside the front support plate. A gear III is rotatably connected inside the front support plate. A rotating plate is fixedly connected to the outside of the gear III. A convex column is fixedly connected to the outside of the rotating plate. A rotating wheel is rotatably connected inside the front support plate. A connecting plate is fixedly connected to the outside of the support plate. A sliding column is slidably connected inside the connecting plate. A connecting frame is fixedly connected to the top of the sliding column. A receiving plate is fixedly connected to the bottom of the connecting frame. An adjusting component is arranged inside the receiving plate. A resetting component is arranged inside the connecting plate;

[0006] Preferably, the adjusting assembly includes a second motor, the outside of the second motor is fixedly connected to the rear side inner wall of the accommodating plate, the driving end of the second motor is fixedly connected with a threaded rod, a plurality of adjusting plates are slidably connected to the outside of the threaded rod, the bottom of the adjusting plate is fixedly connected with a cutting tool head, the top of the adjusting plate is rotatably connected with a connecting rod, and a threaded collar is fixedly connected to the inside of one of the adjusting plates, and the inside of the threaded collar is threadedly connected to the outside of the threaded rod;

[0007] Preferably, a fixing column is fixedly connected to the rear side of the second gear, the other end of the fixing column is rotatably connected to the inside of the rear side support plate, two cams are fixedly connected to the outside of the fixing column, a plurality of grooves are formed in the outside of the runner, and a conveying roller is fixedly connected to the rear side of the runner, and the other end of the conveying roller is rotatably connected to the inside of the rear side support plate;

[0008] Preferably, the reset assembly includes a limiting plate, the top of the limiting plate is fixedly connected to the bottom of the sliding column, a limiting groove is formed in the inside of the connecting plate, a spring is fixedly connected to one side inner wall of the limiting groove, and the other end of the spring is fixedly connected to the outside of the sliding column;

[0009] Preferably, limiting columns are fixedly connected to both the left and right sides inside the accommodating plate, the outside of the limiting columns is slidably connected to the inside of the adjusting plate, and the outside of the adjusting plate is slidably connected to the inner wall of the accommodating plate;

[0010] Preferably, the outside of the cam is in contact with the top of the connecting frame, a cutting bottom plate is fixedly connected to the middle of the support frame, and the outside of the cutting tool head is in contact with the top of the cutting bottom plate;

[0011] Preferably, the external teeth of the first gear are meshed with the external teeth of the second gear, the external teeth of the second gear are meshed with the external teeth of the third gear, and the outside of the convex column is slidably connected to the inner wall of the groove;

[0012] Preferably, a feeding roller is rotatably connected to the outside of the support frame, a preheating roller is rotatably connected to the inside of the support frame, a coating roller is rotatably connected to the inside of the support frame, a third motor is fixedly connected to the rear end of the support frame away from the feeding roller, the driving end of the third motor is fixedly connected with a take-up roller, and an operator is fixedly connected to the side of the support frame close to the feeding roller.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, through the cooperation of the first motor, the first gear, the second gear, the third gear, the rotating plate, the convex column and the rotating wheel, the effect of intermittent transmission of the protective film is achieved. This intermittent transmission method allows the protective film to have sufficient time to fully contact the coating roller during the coating process, ensuring uniform adhesion of the coating. In the slitting process, the cutting blade can cut when the protective film is stationary, avoiding uneven cut edges caused by the movement of the protective film, greatly improving the uniformity of the protective film coating and the precision of slitting, and effectively ensuring the processing quality of the product.

[0015] 2. In the present invention, through the cooperation of the second motor, the threaded rod, the adjusting plate, the cutting blade and the limiting column, the effect of flexibly adjusting the distance between the cutting blades is achieved, which can meet the slitting requirements of various specifications of protective films. Whether it is a narrow small protective film or a wide large protective film, it can be accurately slit by adjusting the distance between the cutting blades, effectively reducing the trouble of replacing equipment due to different specifications, reducing production costs, improving production efficiency, and enhancing the versatility and competitiveness of the device in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a side view schematic diagram of the overall structure of the present invention;

[0018] Figure 3 is a schematic diagram of the support plate structure of the present invention;

[0019] Figure 4 is a schematic diagram of the structure of the rotating wheel of the present invention;

[0020] Figure 5 is a schematic diagram of the structural disassembly of the connecting frame of the present invention;

[0021] Figure 6 is a schematic diagram of the structure of the receiving plate of the present invention;

[0022] Figure 7 is a schematic diagram of the disassembly of the threaded rod and its internal structure of the present invention;

[0023] Figure 8 is Figure 4 the enlarged view of A in

[0024] Legend:

[0025] 1. Support frame; 2. Support plate; 3. First motor; 4. First gear; 5. Second gear; 6. Fixed column; 7. Cam; 8. Third gear; 9. Rotating plate; 10. Convex column; 11. Runner; 12. Groove; 13. Conveyor roller; 14. Connecting plate; 15. Sliding column; 16. Connecting frame; 17. Accommodating plate; 18. Second motor; 19. Threaded rod; 20. Adjusting plate; 21. Cutting tool head; 22. Link; 23. Threaded sleeve ring; 24. Limit column; 25. Limit plate; 26. Limit groove; 27. Spring; 28. Feeding roller; 29. Preheating roller; 30. Coating roller; 31. Third motor; 32. Receiving roller; 33. Operator. Specific implementation manner

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Refer to Figures 1 to 2 , an embodiment provided by the present invention: A protective film coating and slitting integrated device includes a support frame 1, which serves as the basic support structure of the entire device to ensure the overall stability of the device. A first motor 3 is fixedly connected to the outside of the front support plate 2 to provide a power source and drive the first gear 4 to rotate, thereby driving a series of gear transmissions to provide the initial power for the power system of the intermittent transmission of the protective film. The driving end of the first motor 3 is fixedly connected to the first gear 4, which rotates under the drive of the first motor 3. Through meshing transmission with the second gear 5, the power is transmitted to the second gear 5. The second gear 5 is rotatably connected to the inside of the front support plate 2, meshes with the first gear 4, receives the power transmitted by the first gear 4 and performs secondary transmission to drive the fixed column 6 and the third gear 8 to rotate.

[0028] Refer to Figures 3 to 5 , the external teeth of the first gear 4 are meshed with the external teeth of the second gear 5. The fixed column 6 is fixedly connected to the rear side of the second gear 5, connecting the second gear 5 and the rear support plate 2, enabling the rotation of the second gear 5 to be stably transmitted, and at the same time providing an installation carrier for the cam 7. The other end of the fixed column 6 is rotatably connected to the inside of the rear support plate 2. Two cams 7 are fixedly connected to the outside of the fixed column 6. As the fixed column 6 rotates, its contour shape contacts the top of the connecting frame 16, pushing the connecting frame 16, the sliding column 15 and the accommodating plate 17 to move up and down, realizing the lifting action of the cutting tool head 21.

[0029] Inside the front support plate 2, a third gear 8 is rotatably connected, which meshes with the second gear 5, receives the power transmitted by the second gear 5, drives the rotating plate 9 and the convex column 10 to rotate. The external teeth of the second gear 5 are meshed with the external teeth of the third gear 8. The third gear 8 is fixedly connected with a rotating plate 9 on the outside. As the third gear 8 rotates, it drives the convex column 10 to perform a circular motion. The rotating plate 9 is fixedly connected with a convex column 10 on the outside, which slides in the groove 12 of the runner 11, and drives the runner 11 to rotate intermittently through its own movement track.

[0030] Inside the front support plate 2, a runner 11 is rotatably connected. Through the cooperation of the groove 12 and the convex column 10, intermittent rotation is realized. The conveying roller 13 fixed to the rear side thereof rotates intermittently accordingly, driving the protective film to be intermittently conveyed. A plurality of grooves 12 are provided on the outside of the runner 11, providing a sliding track for the convex column 10, which is the key structure for realizing the intermittent rotation of the runner 11. The outside of the convex column 10 is slidably connected to the inner wall of the groove 12. The rear side of the runner 11 is fixedly connected with a conveying roller 13, which rotates intermittently with the runner 11 for conveying the protective film, so that it moves intermittently in the device. The other end of the conveying roller 13 is rotatably connected to the inside of the rear support plate 2. The outside of the support plate 2 is fixedly connected with a connecting plate 14, providing a sliding track for the sliding column 15 to ensure the linearity and stability of the movement of the sliding column 15.

[0031] Inside the connecting plate 14, a sliding column 15 is slidably connected, which slides in the connecting plate 14 and connects the connecting frame 16, transmitting the thrust of the cam 7 to the connecting frame 16 to realize the up and down movement of the connecting frame 16 and related components. The top of the sliding column 15 is fixedly connected with a connecting frame 16, the top contacts the cam 7, and the bottom is connected to the receiving plate 17. Driven by the cam 7, it drives the receiving plate 17 to move up and down, thereby controlling the lifting of the cutting tool head 21. The outside of the cam 7 contacts the top of the connecting frame 16. The bottom of the connecting frame 16 is fixedly connected with a receiving plate 17, which is used to install related components of the adjusting assembly, such as the second motor 18, the threaded rod 19, the adjusting plate 20, etc., providing an installation space for the adjustment of the distance between the cutting tool heads 21.

[0032] Refer to Figures 6 to 8 , inside the receiving plate 17, an adjusting assembly is provided. The adjusting assembly includes a second motor 18, which provides power to drive the threaded rod 19 to rotate, providing a power source for the adjustment of the distance between the adjusting plate 20 and the cutting tool head 21. The outside of the second motor 18 is fixedly connected to the rear side inner wall of the receiving plate 17. The driving end of the second motor 18 is fixedly connected with a threaded rod 19, which rotates under the drive of the second motor 18. Through the threaded connection with the threaded sleeve ring 23, it drives the adjusting plate 20 to move on the threaded rod 19 and the limiting column 24. A plurality of adjusting plates 20 are slidably connected to the outside of the threaded rod 19, the bottom is connected to the cutting tool head 21, and the top is connected through a connecting rod 22, and moves under the action of the threaded rod 19 and the limiting column 24 to realize the adjustment of the distance between the cutting tool heads 21.

[0033] The bottom of the adjusting plate 20 is fixedly connected with a cutting tool head 21. When it descends driven by the accommodating plate 17, it cooperates with the cutting bottom plate to cut the protective film. The top of the adjusting plate 20 is rotatably connected with a connecting rod 22, which connects each adjusting plate 20, enabling multiple adjusting plates 20 to move synchronously, ensuring the consistency of the spacing adjustment of the cutting tool heads 21. A threaded collar 23 is fixedly connected inside one of the adjusting plates 20, which is threadedly connected with the threaded rod 19 and fixed inside one of the adjusting plates 20. When the threaded rod 19 rotates, it drives the adjusting plate 20 to move. The inside of the threaded collar 23 is threadedly connected to the outside of the threaded rod 19. Limit posts 24 are fixedly connected to both the left and right sides inside the accommodating plate 17, providing guiding and limiting functions for the adjusting plate 20 to ensure that the adjusting plate 20...

[0034] maintains a linear motion during the movement process to prevent deviation. The outside of the limit post 24 is slidably connected to the inside of the adjusting plate 20, and the outside of the adjusting plate 20 is slidably connected to the inner wall of the accommodating plate 17. A reset assembly is provided inside the connecting plate 14. The reset assembly includes a limit plate 25, which is fixed to the bottom of the sliding column 15 and slides in the limit groove 26 to limit the movement range of the sliding column 15 and prevent it from detaching from the connecting plate 14. The top of the limit plate 25 is fixedly connected to the bottom of the sliding column 15. A limit groove 26 is provided inside the connecting plate 14, providing a sliding track for the limit plate 25 and cooperating with the limit plate 25 to limit the movement range of the sliding column 15. A spring 27 is fixedly connected to one side of the inner wall of the limit groove 26, connecting the inner wall of the limit groove 26 and the sliding column 15, and is compressed when the cam 7 pushes the sliding column 15 to descend. When the convex part of the cam 7 turns away, the sliding column 15 and related components are reset by the elastic force.

[0035] The other end of the spring 27 is fixedly connected to the outside of the sliding column 15. The middle part of the support frame 1 is fixedly connected with a cutting bottom plate, which cooperates with the cutting tool head 21 to provide a support surface for the cutting of the protective film and ensure the stable progress of the cutting process. The outside of the cutting tool head 21 is in contact with the top of the cutting bottom plate. A feeding roller 28 is rotatably connected to the outside of the support frame 1, which is used to place the protective film roll and provide an initial placement position for the transmission of the protective film. When the take-up roller 32 rotates driven by the motor three 31, the feeding roller 28 rotates passively to release the protective film. A preheating roller 29 is rotatably connected to the inside of the support frame 1 to preheat the transmitted protective film, improving the flexibility of the protective film and facilitating subsequent coating and slitting processes.

[0036] Inside the support frame 1, there is a rotatable coating roller 30, which evenly coats the protective film with paint and is a key component for realizing the coating function of the protective film. At the rear end of the side of the support frame 1 away from the unwinding roller 28, there is a fixed connection with a third motor 31, which provides power for the winding roller 32, drives the winding roller 32 to rotate, and winds up the protective film after coating and slitting. The driving end of the third motor 31 is fixedly connected with the winding roller 32, which rotates under the drive of the third motor 31 and is used to wind up the processed protective film for convenient storage and transportation. On the side of the support frame 1 close to the unwinding roller 28, there is a fixed connection with an operator 33, which is used to control the start and stop of the device, adjust parameters such as the rotation speed of each motor and the distance between the cutting tool heads 21, and is the control center for the interaction between the operator and the device.

[0037] Working principle: First, install the protective film roll to be processed on the unwinding roller 28 rotatably connected to the outside of the support frame 1. At this time, one end of the protective film passes around a series of components such as the preheating roller 29 and the coating roller 30 in a specific order to ensure that the protective film can smoothly enter each processing link. At the same time, the operator precisely controls the operating parameters of the entire device, such as speed and temperature, through the operator 33 to ensure the stable and efficient operation of the device. Second, start the power transmission and the operation of related components. Start the first motor 3, and the driving end of the first motor 3 starts to drive the first gear 4 to rotate. Since there is a tooth meshing connection between the first gear 4 and the second gear 5, the second gear 5 will start to rotate accordingly. The fixed column 6 fixedly connected to the rear side of the second gear 5 will also rotate together. The two cams 7 installed outside the fixed column 6 will also start to rotate, and the fixed column 6 will drive the end rotatably connected to the inside of the support plate 2 at its rear side to rotate. At the same time, because the second gear 5 and the third gear 8 are also connected by tooth meshing, the third gear 8 will start to rotate. When the third gear 8 rotates, the rotating plate 9 fixedly connected to its outside will rotate accordingly. The convex column 10 on the rotating plate 9 slides in the multiple grooves 12 opened on the outside of the rotating wheel 11. The conveying roller 13 fixedly connected to the rear side of the rotating wheel 11 will also start to rotate accordingly. The rotation of the conveying roller 13 drives the protective film to move forward.

[0038] During the transfer of the protective film, it will first pass through the preheating roller 29. The preheating roller 29 preheats the protective film to make the protective film reach the temperature condition suitable for coating. After that, the protective film will pass through the coating roller 30. The coating roller 30 evenly coats the paint on the surface of the protective film. Thus, the coating process is completed. When it is necessary to perform a slitting operation on the protective film that has already been coated, the second motor 18 is started. The driving end of the second motor 18 drives the threaded rod 19 to rotate. The adjusting plate 20 where the threaded sleeve ring 23 connected to the outside of the threaded rod 19 is located, and other adjusting plates 20 connected to the adjusting plate 20 through the connecting rod 22 will slide on the threaded rod 19. The cutting tool head 21 fixedly connected to the bottom of the adjusting plate 20 will be adjusted to the appropriate cutting position as the adjusting plate 20 moves. In this process, the limiting columns 24 fixedly connected to the left and right sides inside the receiving plate 17 play a key role, restricting the adjusting plate 20 to only slide in the horizontal direction, thereby ensuring the accuracy of the position adjustment of the cutting tool head 21.

[0039] During the continuous rotation of the cam 7, the outside of the cam 7 always remains in contact with the top of the connecting frame 16. When the cam 7 rotates to a specific position, it will push the connecting frame 16 downward, and the receiving plate 17 fixedly connected to the bottom of the connecting frame 16 will also descend accordingly. The cutting tool head 21 inside the receiving plate 17 will descend and contact the cutting bottom plate fixedly connected to the middle of the support frame 1, thereby cutting the protective film. During the cutting process, the sliding column 15 will slide inside the connecting plate 14, the limiting plate 25 will move inside the limiting groove 26, and at the same time, the spring 27 on one side of the inner wall of the limiting groove 26 will be compressed.

[0040] Finally, when the cam 7 continues to rotate and no longer exerts pressure on the connecting frame 16, the previously compressed spring 27 will recover its elastic deformation, and then push the sliding column 15 upward. The connecting frame 16 and the receiving plate 17 will also rise and reset accordingly. The cutting tool head 21 will leave the cutting bottom plate. Thus, a complete cutting cycle is completed. The protective film after this series of processing procedures of coating and slitting will be driven by the third motor 31 to rotate the take-up roller 32, and the processed protective film will be wound on the take-up roller 32, which is convenient for subsequent sorting and storage of the protective film.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective film coating and slitting integrated device, comprising a support frame (1), characterized in that: The front and rear sides of the support frame (1) are both fixedly connected to the support plate (2); the outside of the front support plate (2) is fixedly connected to a motor 1 (3); the driving end of the motor 1 (3) is fixedly connected to a gear 1 (4); the inside of the front support plate (2) is rotatably connected to a gear 2 (5); the inside of the front support plate (2) is rotatably connected to a gear 3 (8); the outside of the gear 3 (8) is fixedly connected to a rotating plate (9); the outside of the rotating plate (9) is fixedly connected to a convex column (10); the inside of the front support plate (2) is rotatably connected to a rotating wheel (11); the outside of the support plate (2) is fixedly connected to a connecting plate (14); the inside of the connecting plate (14) is slidably connected to a sliding column (15); the top of the sliding column (15) is fixedly connected to a connecting frame (16); the bottom of the connecting frame (16) is fixedly connected to a receiving plate (17); an adjusting component is provided inside the receiving plate (17); and a reset component is provided inside the connecting plate (14).

2. The protective film coating and slitting integrated device according to claim 1, characterized in that: The adjustment assembly comprises a second motor (18), the exterior of the second motor (18) being fixedly connected to the rear side of the inner wall of the containing plate (17), the driving end of the second motor (18) being fixedly connected to a threaded rod (19), the exterior of the threaded rod (19) being slidably connected to a plurality of adjustment plates (20), the bottom of the adjustment plate (20) being fixedly connected to a cutting head (21), the top of the adjustment plate (20) being rotatably connected to a connecting rod (22), the interior of one of the adjustment plates (20) being fixedly connected to a threaded collar (23), the interior of the threaded collar (23) being threadedly connected to the exterior of the threaded rod (19).

3. The protective film coating and slitting integrated device according to claim 2, characterized in that: A fixing column (6) is fixedly connected to the rear side of the gear 2 (5), the other end of the fixing column (6) is rotatably connected to the inside of the rear support plate (2), the outside of the fixing column (6) is fixedly connected to two cams (7), a plurality of grooves (12) are provided on the outside of the rotating wheel (11), a conveying roller (13) is fixedly connected to the rear side of the rotating wheel (11), and the other end of the conveying roller (13) is rotatably connected to the inside of the rear support plate (2).

4. The protective film coating and slitting integrated device according to claim 1, characterized in that: The reset assembly comprises a limit plate (25), the top of the limit plate (25) is fixedly connected to the bottom of the sliding column (15), a limit groove (26) is provided inside the connecting plate (14), a spring (27) is fixedly connected to one side of the inner wall of the limit groove (26), and the other end of the spring (27) is fixedly connected to the outside of the sliding column (15).

5. The protective film coating and slitting integrated device according to claim 2, characterized in that: The left and right sides of the interior of the accommodating plate (17) are fixedly connected to limiting columns (24), the exterior of the limiting columns (24) is slidably connected to the interior of the adjustment plate (20), and the exterior of the adjustment plate (20) is slidably connected to the inner wall of the accommodating plate (17).

6. The protective film coating and slitting integrated device according to claim 3, characterized in that: The outside of the cam (7) contacts the top of the connecting frame (16), the middle of the support frame (1) is fixedly connected to a cutting base plate, and the outside of the cutting head (21) contacts the top of the cutting base plate.

7. The protective film coating and slitting integrated device according to claim 3, characterized in that: The external teeth of the gear 1 (4) are meshed with the external teeth of the gear 2 (5), the external teeth of the gear 2 (5) are meshed with the external teeth of the gear 3 (8), and the outer part of the protrusion (10) is slidably connected to the inner wall of the groove (12).

8. The protective film coating and slitting integrated device according to claim 1, characterized in that: The support frame (1) is rotatably connected to a discharge roller (28) on the outside, the support frame (1) is rotatably connected to a preheating roller (29) on the inside, the support frame (1) is rotatably connected to a coating roller (30) on the inside, the rear end of the support frame (1) away from the discharge roller (28) is fixedly connected to a motor three (31), the driving end of the motor three (31) is fixedly connected to a receiving roller (32), and the support frame (1) is fixedly connected to an operator (33) on a side close to the discharge roller (28).

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