A polyimide film flattening device

Abstract

A kind of polyimide film flattening device, including film reel, first transmission roller, film reel rotates under the drive of driving motor, first transmission roller is installed on first roller shaft, both ends of first roller shaft are respectively installed on first roller shaft mounting plate, the lower end of first roller shaft mounting plate is connected to fixed base, film is wound on film reel by first transmission roller;It further includes the first film flattening component being arranged between first transmission roller and the film reel, first film flattening component includes first limiting roller and second limiting roller being arranged side by side, and lower pressing roller is arranged between first limiting roller and second limiting roller, lower pressing roller reciprocates along vertical direction and reciprocatingly flattens and tension the film passing between first limiting roller and second limiting roller;The present application is favorable to avoid that film generates wrinkle, fold in the process of winding.

Description

Technical Field

[0001] This invention relates to the field of polyimide film production technology, and more specifically to a polyimide film leveling device. Background Technology

[0002] Polyimide film can be used for slot insulation in motors and cable wrapping materials. The produced polyimide film needs to undergo winding, packaging, storage, and transportation. In the current winding process, a motor controls the rotation of the winding drum, while a drive roller winds the film onto the drum, maintaining a certain tension to complete the winding. However, prolonged winding can easily cause wrinkles, streaks, and creases, thus affecting the quality of the film product. Summary of the Invention

[0003] The purpose of this invention is to provide a polyimide film flattening device that can effectively solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A polyimide film flattening device includes a film roll, which rotates under the drive of a drive motor. The device includes a first drive roller, which is mounted on a first roller shaft. Both ends of the first roller shaft are respectively mounted on a first roller shaft mounting plate. The lower end of the first roller shaft mounting plate is connected to a fixed base. The film is wound onto the film roll by the first drive roller.

[0006] It also includes a first film leveling assembly disposed between the first drive roller and the film roll. The first film leveling assembly includes a first limiting roller and a second limiting roller disposed side by side. A pressure roller is disposed between the first limiting roller and the second limiting roller. The pressure roller reciprocates in the vertical direction and reciprocates to flatten and tension the film passing between the first limiting roller and the second limiting roller.

[0007] The first limiting roller, the second limiting roller, and the lower pressure roller reciprocate in the horizontal direction and reciprocate to flatten the film in the pressed state.

[0008] It also includes a second film leveling assembly, which includes a first pressing roller and a second pressing roller respectively disposed on one side of the first limiting roller and the second limiting roller. The first pressing roller presses the film onto the first limiting roller, and the second pressing roller presses the film onto the second limiting roller.

[0009] Preferably, a second roller shaft is installed on both the first limiting roller and the second limiting roller, and the two ends of the second roller shaft are respectively installed on a second mounting plate, and the second mounting plate is connected to a fixed base plate.

[0010] Preferably, the lower pressure roller is mounted on the third roller shaft, and the two ends of the third roller shaft are respectively mounted on the third mounting plate. The bottom of the third mounting plate is connected to a guide slider. The second mounting plate is provided with a guide groove in the vertical direction. The guide slider is disposed in the guide groove and slides along the guide groove.

[0011] One end of the guide slider extends out of the guide groove and is connected to the first fixing block. A second fixing block is provided above the first fixing block and is connected to the second mounting plate. The upper end of the compression spring is connected to the second fixing block and the lower end is connected to the first fixing block. A transmission roller is provided below the first fixing block and moves vertically under the drive of the active cam.

[0012] Preferably, the bottom of the fixed base plate is connected to the first sliding plate, and the first sliding plate slides back and forth along the fixed base;

[0013] Fixed mounting plates are respectively provided on both sides of the first sliding plate. First guide holes are respectively opened on both sides of the first sliding plate. A first guide rod is inserted through the first guide hole. Fixed mounting plates are respectively connected to both ends of the first guide rod. A threaded sleeve is installed on the first sliding plate. A transmission screw is threadedly connected to the threaded sleeve. Both ends of the transmission screw are respectively installed on the fixed mounting plate. One end of the transmission screw is connected to a second motor.

[0014] Preferably, the first pressing roller and the second pressing roller are both mounted on the first support rod. The two ends of the first support rod are respectively connected to the first support rod. One end of the first support rod is connected to the first screw. One end of the first screw passes through the first screw hole opened on the first positioning block and is threadedly connected to the first nut. The first positioning block is connected to the top of the third mounting plate.

[0015] A friction plate is provided on the side of the first screw near the first support rod.

[0016] Preferably, it further includes a flattening assembly, which includes a first flattening roller and a second flattening roller arranged in a vertical direction, with the film passing between the first flattening roller and the second flattening roller.

[0017] Preferably, the bottom of the first fixing block is connected to a roller mounting plate, the transmission roller is mounted on the roller mounting plate via a roller shaft, the active cam is mounted on a cam shaft, both ends of the cam shaft are respectively mounted on the cam mounting plate, one end of the cam shaft is connected to a first motor, the bottom of the cam mounting plate is connected to a fixed support plate, and the fixed support plate is connected to the fixed base plate.

[0018] Preferably, the film roll is mounted on a first mounting shaft, and both ends of the first mounting shaft are respectively mounted on a first mounting plate via bearing supports. One end of the first mounting shaft is connected to a drive motor, and the lower end of the first mounting plate is connected to a fixed base.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. During the process of the film being wound onto the film roll by the first drive roller, the first film leveling assembly performs a leveling operation on the film. When the drive roller, driven by the active cam, reciprocates vertically, the lower pressure roller, under the action of the compression spring, reciprocates along the guide groove and reciprocates downwards on the film between the first and second limit rollers. When the lower pressure roller reaches its lowest point, it is lower than the first and second limit rollers; when it reaches its highest point, it is higher than the first and second limit rollers, thus achieving the leveling operation of the film by the lower pressure roller. The film is reciprocated and tensioned, and does not need to be subjected to excessive pressure during operation. When the lower pressure roller reciprocates and tensions the film, the second motor drives the transmission screw to rotate in both directions and causes the first sliding plate to slide back and forth along the fixed base. This causes the lower pressure roller, the first limiting roller, and the second limiting roller to reciprocate in the horizontal direction. When the lower pressure roller applies a vertical pressure force to the film, the lower pressure roller, the first limiting roller, and the second limiting roller reciprocate relative to the film, which greatly improves the smoothness of the film by removing wrinkles and creases.

[0021] 2. The second film leveling assembly is used to further complete the secondary leveling operation of the film. The first pressing roller presses the film onto the first limiting roller to increase the interaction force between the film and the first limiting roller. The second pressing roller presses the film onto the second limiting roller to increase the interaction force between the film and the second limiting roller. As a result, the tension generated by the flattening action of the film passing between the first limiting roller and the second limiting roller in the vertical direction and the flattening action of the lower pressing roller, the first limiting roller and the second limiting roller in the horizontal direction is greater than that of other parts of the film during the process, which greatly promotes the secondary leveling effect of the film. Attached Figure Description

[0022] Figure 1 This is a first-view schematic diagram of a polyimide film flattening device according to an embodiment of the present invention;

[0023] Figure 2 This is a second-view schematic diagram of a polyimide film flattening device according to an embodiment of the present invention;

[0024] Figure 3 This is a first-view schematic diagram of the first thin-film planarization component in an embodiment of the present invention;

[0025] Figure 4 This is a second-view schematic diagram of the first thin-film planarization component in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the installation of the first sliding plate in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the second thin film leveling component in an embodiment of the present invention;

[0028] In the diagram, 1. Film roll, 2. Drive motor, 3. First transmission roller, 4. First roller shaft mounting plate, 5. Fixed base, 6. First limiting roller, 7. Second limiting roller, 8. Lower pressure roller, 9. First pressing roller, 10. Second pressing roller, 11. Second roller shaft, 12. Second mounting plate, 13. Fixed base plate, 14. Third roller shaft, 15. Third mounting plate, 16. Guide slider, 17. Guide groove, 18. First fixing block, 19. Second fixing block, 20. Compression spring, 21. Transmission roller 21. Wheel, 22. Active cam, 23. First sliding plate, 24. Fixed support plate, 25. Fixed mounting plate, 26. First guide hole, 27. First guide rod, 28. Threaded sleeve, 29. Transmission screw, 30. Second motor, 31. First support rod, 32. First support rod, 33. First screw, 34. First positioning block, 35. First nut, 36. Friction plate, 37. First flattening roller, 38. Second flattening roller, 39. First mounting plate, 40. Roller mounting plate, 41. Cam mounting plate. Implementation

[0029] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-6 As shown, a polyimide film flattening device includes a film roll 1, which rotates under the drive of a drive motor 2, and a first transmission roller 3, which is mounted on a first roller shaft. The two ends of the first roller shaft are respectively mounted on a first roller shaft mounting plate 4, and the lower end of the first roller shaft mounting plate 4 is connected to a fixed base 5. The film is wound onto the film roll 1 by the first transmission roller 3.

[0031] The present invention also includes a first film leveling assembly disposed between the first transmission roller 3 and the film roll 1. The first film leveling assembly includes a first limiting roller 6 and a second limiting roller 7 arranged side by side. A lower pressure roller 8 is disposed between the first limiting roller 6 and the second limiting roller 7. The lower pressure roller 8 reciprocates in the vertical direction and reciprocates to flatten and tension the film passing between the first limiting roller 6 and the second limiting roller 7.

[0032] The first limiting roller 6 and the second limiting roller 7 are distributed at the same height in the horizontal direction. The lower pressure roller 8 is set in the middle position between the first limiting roller 6 and the second limiting roller 7 so that when the lower pressure roller 8 reciprocates in the vertical direction, the film is kept relatively close to the force exerted by the first limiting roller 6 and the second limiting roller 7.

[0033] The first limiting roller 6, the second limiting roller 7, and the lower pressing roller 8 reciprocate in the horizontal direction and reciprocate to flatten the film in the pressed state.

[0034] The reciprocating motion of the lower pressure roller 8 in the vertical direction can perform pressing and flattening operations on the film. At the same time, the reciprocating motion of the first limiting roller 6, the second limiting roller 7, and the lower pressure roller 8 in the horizontal direction causes relative displacement between the first limiting roller 6, the second limiting roller 7, and the lower pressure roller 8 and the film in the pressing state, further promoting the pressing and flattening effect on the film.

[0035] When the lower pressure roller 8 moves vertically to its lowest point, it is lower than the first limit roller 6 or the second limit roller 7, at which point the film is under maximum pressure. When the lower pressure roller 8 moves vertically to its highest point, it is higher than the first limit roller 6 or the second limit roller 7, at which point the film is not pressed by the lower pressure roller 8. The reciprocating motion of the lower pressure roller 8 avoids being subjected to excessive pressure continuously.

[0036] The present invention also includes a second film leveling assembly, the second film leveling assembly including a first pressing roller 9 and a second pressing roller 10 respectively disposed on one side of the first limiting roller 6 and the second limiting roller 7, the first pressing roller 9 pressing the film onto the first limiting roller 6, and the second pressing roller 10 pressing the film onto the second limiting roller 7;

[0037] The first pressing roller 9 presses the film onto the first limiting roller 6 to increase the force exerted by the first limiting roller 6 on the film, and the second pressing roller 10 presses the film onto the second limiting roller 7 to increase the force exerted by the second limiting roller 7 on the film, so that the film passing between the first pressing roller 9 and the second pressing roller 10 is subjected to a flattening force from the lower pressing roller 8.

[0038] A second roller shaft 11 is installed on both the first limiting roller 6 and the second limiting roller 7. The two ends of the second roller shaft 11 are respectively installed on the second mounting plate 12, and the second mounting plate 12 is connected to the fixed base plate 13.

[0039] The lower pressure roller 8 is mounted on the third roller shaft 14. Both ends of the third roller shaft 14 are respectively mounted on the third mounting plate 15. The bottom of the third mounting plate 15 is connected to a guide slider 16. The second mounting plate 12 has a guide groove 17 in the vertical direction. The guide slider 16 is disposed in the guide groove 17 and slides along the guide groove 17.

[0040] One end of the guide slider 16 extends out of the guide groove 17 and is connected to the first fixing block 18. A second fixing block 19 is provided above the first fixing block 18. The second fixing block 19 is connected to the second mounting plate 12. The upper end of the compression spring 20 is connected to the second fixing block 19, and the lower end is connected to the first fixing block 18. A transmission roller 21 is provided below the first fixing block 18. The transmission roller 21 moves vertically under the drive of the active cam 22.

[0041] The active cam 22 drives the transmission roller 21 to move in the vertical direction, and at the same time, under the action of the compression spring 20, the transmission roller 21 reciprocates in the vertical direction, thereby driving the lower pressure roller 8 to reciprocate in the vertical direction.

[0042] The bottom of the fixed base plate 13 is connected to the first sliding plate 23, and the first sliding plate 23 slides back and forth along the fixed base 5;

[0043] Fixed mounting plates 25 are respectively provided on both sides of the first sliding plate 23. First guide holes 26 are respectively opened on both sides of the first sliding plate 23. First guide rods 27 are inserted through the first guide holes 26. Fixed mounting plates 25 are respectively connected to both ends of the first guide rods 27. Threaded sleeves 28 are installed on the first sliding plate 23. A transmission screw 29 is threadedly connected to the threaded sleeve 28. Both ends of the transmission screw 29 are respectively installed on the fixed mounting plates 25. One end of the transmission screw 29 is connected to the second motor 30.

[0044] The second motor 30 drives the transmission screw 29 to rotate in the forward and reverse directions, thereby driving the first sliding plate 23 to slide back and forth along the fixed base 5, so that the first limiting roller 6, the second limiting roller 7 and the lower pressure roller 8 move back and forth in the horizontal direction.

[0045] The first pressing roller 9 and the second pressing roller 10 are both mounted on the first support rod 31. The two ends of the first support rod 31 are respectively connected to the first support rod 32. One end of the first support rod 32 is connected to the first screw 33. One end of the first screw 33 passes through the first screw hole opened on the first positioning block 34 and is threadedly connected to the first nut 35. The first positioning block 34 is connected to the top of the third mounting plate 15.

[0046] A friction plate 36 is provided on the first screw 33 near the first support rod 32, and the friction plate 36 is fixed to the first screw 33;

[0047] Rotate the first pressing roller 9 or the second pressing roller 10 so that the first pressing roller 9 presses the film onto the first limiting roller 6, and the second pressing roller 10 presses the film onto the second limiting roller 10. Then, press the first nut 35 and the friction plate 36 onto the first positioning block 34 so as to position the first pressing roller 9 or the second pressing roller 10.

[0048] The present invention also includes a flattening assembly, which includes a first flattening roller 37 and a second flattening roller 38 arranged in a vertical direction, and the film passes between the first flattening roller 37 and the second flattening roller 38;

[0049] Either the first flattening roller 37 or the second flattening roller 38 can be mounted on the mounting plate via a mounting shaft. The mounting plate is connected to the fixed base 5. The first flattening roller 37 and the second flattening roller 38 abut against each other to flatten the film. Alternatively, bearing mounting seats can be installed at both ends of the mounting shaft on the first flattening roller 37. The bearing mounting seats are installed in vertical guide grooves opened on the mounting plate. The bearing mounting seats move along the vertical guide grooves. At the same time, a first compression spring is set in the vertical guide grooves. Under the action of the first compression spring, the first flattening roller 37 and the second flattening roller 38 are kept in contact with each other.

[0050] To ensure the stability of the bearing mounting base moving along the vertical guide groove, T-shaped guide blocks can be installed on both sides of the bearing mounting base. The T-shaped guide blocks are installed in the T-shaped guide grooves opened on the vertical guide groove.

[0051] The bottom of the first fixing block 18 is connected to a roller mounting plate 40. The transmission roller 21 is mounted on the roller mounting plate 40 via a roller shaft. The active cam 22 is mounted on a cam shaft. Both ends of the cam shaft are respectively mounted on the cam mounting plate 41. One end of the cam shaft is connected to the first motor. The bottom of the cam mounting plate 41 is connected to a fixed support plate 24. The fixed support plate 24 is connected to the fixed base plate 13.

[0052] The film roll 1 is mounted on a first mounting shaft. Both ends of the first mounting shaft are mounted on a first mounting plate 39 via bearing supports. One end of the first mounting shaft is connected to a drive motor. The lower end of the first mounting plate 39 is connected to a fixed base 5.

[0053] During the process of the film being wound onto the film roll 1 by the first drive roller 3, the first film leveling component performs a leveling operation on the film. When the drive roller 21, driven by the active cam 22, reciprocates vertically, the lower pressure roller 8, under the action of the compression spring 20, reciprocates along the guide groove 17 and reciprocates downwards on the film between the first limiting roller 6 and the second limiting roller 7. When the lower pressure roller 8 reaches its lowest point, it is lower than the first limiting roller 6 and the second limiting roller 7; when it reaches its highest point, it is higher than the first limiting roller 6 and the second limiting roller 7, thus achieving the leveling operation of the film by the lower pressure roller 8. The film is reciprocated to tension and flatten it, and the film does not need to be subjected to excessive pressure during operation. When the lower pressure roller 8 reciprocates to tension and flatten the film, the second motor 30 drives the transmission screw 29 to rotate in both directions and causes the first sliding plate 23 to slide back and forth along the fixed base 24. This causes the lower pressure roller 8, the first limiting roller 6, and the second limiting roller 7 to reciprocate in the horizontal direction. When the lower pressure roller 8 applies a vertical pressure force to the film, the lower pressure roller 8, the first limiting roller 6, and the second limiting roller 7 reciprocate relative to the film, which greatly improves the smoothness of the film by removing wrinkles and creases.

[0054] The second film leveling assembly is used to further complete the secondary leveling operation of the film. The first pressing roller 9 presses the film onto the first limiting roller 6 to increase the interaction force between the film and the first limiting roller 6. The second pressing roller 10 presses the film onto the second limiting roller 7 to increase the interaction force between the film and the second limiting roller 7. As a result, the tension generated by the flattening action of the film passing between the first limiting roller 6 and the second limiting roller 7, which is from the vertical movement of the lower pressing roller 8 and the horizontal movement of the lower pressing roller 8, the first limiting roller 6 and the second limiting roller 7, is greater than that of other parts of the film during the process, which greatly promotes the secondary leveling effect of the film.

[0055] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A polyimide film flattening device, comprising a film roll, the film roll rotating under the drive of a drive motor, characterized in that: It includes a first drive roller, which is mounted on a first roller shaft. Both ends of the first roller shaft are respectively mounted on a first roller shaft mounting plate. The lower end of the first roller shaft mounting plate is connected to a fixed base. The film is wound onto the film roll by the first drive roller. It also includes a first film leveling assembly disposed between the first drive roller and the film roll. The first film leveling assembly includes a first limiting roller and a second limiting roller disposed side by side. A pressure roller is disposed between the first limiting roller and the second limiting roller. The pressure roller reciprocates in the vertical direction and reciprocates to flatten and tension the film passing between the first limiting roller and the second limiting roller. The first limiting roller, the second limiting roller, and the lower pressure roller reciprocate in the horizontal direction and reciprocate to flatten the film in the pressed state. It also includes a second film leveling assembly, which includes a first pressing roller and a second pressing roller respectively disposed on one side of the first limiting roller and the second limiting roller. The first pressing roller presses the film onto the first limiting roller, and the second pressing roller presses the film onto the second limiting roller.

2. The polyimide film leveling device according to claim 1, characterized in that: The first limiting roller and the second limiting roller are each equipped with a second roller shaft. The two ends of the second roller shaft are respectively mounted on a second mounting plate, and the second mounting plate is connected to a fixed base plate.

3. The polyimide film leveling device according to claim 2, characterized in that: The lower pressure roller is mounted on the third roller shaft, and the two ends of the third roller shaft are respectively mounted on the third mounting plate. The bottom of the third mounting plate is connected to a guide slider. The second mounting plate is provided with a guide groove in the vertical direction. The guide slider is disposed in the guide groove and slides along the guide groove. One end of the guide slider extends out of the guide groove and is connected to the first fixing block. A second fixing block is provided above the first fixing block and is connected to the second mounting plate. The upper end of the compression spring is connected to the second fixing block and the lower end is connected to the first fixing block. A transmission roller is provided below the first fixing block and moves vertically under the drive of the active cam.

4. The polyimide film leveling device according to claim 2, characterized in that: The bottom of the fixed base plate is connected to the first sliding plate, and the first sliding plate slides back and forth along the fixed base. Fixed mounting plates are respectively provided on both sides of the first sliding plate. First guide holes are respectively opened on both sides of the first sliding plate. A first guide rod is inserted through the first guide hole. Fixed mounting plates are respectively connected to both ends of the first guide rod. A threaded sleeve is installed on the first sliding plate. A transmission screw is threadedly connected to the threaded sleeve. Both ends of the transmission screw are respectively installed on the fixed mounting plate. One end of the transmission screw is connected to a second motor.

5. The polyimide film leveling device according to claim 3, characterized in that: The first and second pressing rollers are both mounted on the first support rod. The two ends of the first support rod are respectively connected to the first support rod. One end of the first support rod is connected to the first screw. One end of the first screw passes through the first screw hole opened on the first positioning block and is threadedly connected to the first nut. The first positioning block is connected to the top of the third mounting plate. A friction plate is provided on the side of the first screw near the first support rod.

6. The polyimide film leveling device according to claim 1, characterized in that: It also includes a flattening assembly, which includes a first flattening roller and a second flattening roller arranged in a vertical direction, with the film passing between the first flattening roller and the second flattening roller.

7. The polyimide film leveling device according to claim 3, characterized in that: The bottom of the first fixed block is connected to a roller mounting plate. The transmission roller is mounted on the roller mounting plate via a roller shaft. The active cam is mounted on a cam shaft. Both ends of the cam shaft are respectively mounted on the cam mounting plate. One end of the cam shaft is connected to a first motor. The bottom of the cam mounting plate is connected to a fixed support plate. The fixed support plate is connected to the fixed base plate.

8. The polyimide film leveling device according to claim 1, characterized in that: The film roll is mounted on a first mounting shaft, and both ends of the first mounting shaft are respectively mounted on a first mounting plate via bearing supports. One end of the first mounting shaft is connected to a drive motor, and the lower end of the first mounting plate is connected to a fixed base.

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