Optical adhesive film hot pressing device

Abstract

The utility model discloses an optical adhesive film hot-pressing device, and particularly relates to the technical field of optical adhesive film processing, the optical adhesive film hot-pressing device comprises an L-shaped vertical plate, a first roll shaft and a second roll shaft are vertically arranged on the outer wall of one end part of the L-shaped vertical plate, a third roll shaft and a fourth roll shaft are vertically arranged on the outer wall of the other end part of the L-shaped vertical plate, and a protective film roll is arranged outside the first roll shaft. According to the utility model, the protective film waste roll and the optical adhesive film waste roll can be rolled synchronously, so that a protective film and an optical adhesive film on the protective film roll and the optical adhesive film roll can be kept in a synchronous stroke, and the stroke paths of the protective film and the optical adhesive film can be limited; therefore, no matter how the thicknesses of the protective film roll, the optical adhesive film roll, the protective film waste roll and the optical adhesive film waste roll change, the paths of the protective film and the optical adhesive film on the hot-pressing table are not affected, and the stroke distances of the protective film and the optical adhesive film on the hot-pressing table are always kept the same. And hot pressing of the protective film and the optical adhesive film is more stable.

Description

Technical Field

[0001] This utility model relates to the field of optical adhesive film processing technology, and more specifically, to an optical adhesive film hot pressing device. Background Technology

[0002] A hot press device for optical adhesive films is a type of equipment used to bond optical adhesive films to optical components. It uses heat and pressure to evenly coat the optical adhesive film onto the surface of the optical component, eliminating air bubbles and impurities to form a strong bond. With the popularization and development of electronic products, touch screens, as the main interface for human-computer interaction, have increasingly higher performance and quality requirements. As an important component of touch screens, optical adhesive films not only need to have good light transmittance, weather resistance, and adhesion, but also need to maintain high precision and high efficiency during processing.

[0003] A search revealed that Chinese patent CN221953890U discloses a hot pressing device for optical adhesive films, relating to the field of optical adhesive film processing technology. During operation, the device automatically feeds, cuts, hot presses, and unloads protective film rolls and optical adhesive film rolls through the actions of a drive motor, a pressing cylinder, and a unloading cylinder. Workers only need to install the protective film rolls, optical adhesive film rolls, protective film waste rolls, and optical adhesive film waste rolls onto different placement rods, resulting in high production efficiency.

[0004] In the aforementioned hot pressing device for optical adhesive films, although a spring is used to control the distance between the protective film and the optical adhesive film, in actual use, as the overall thickness of the film wound on the protective film roll, the optical adhesive film roll, and the waste protective film roll and the waste optical adhesive film roll changes, the stroke angle of the protective film and the optical adhesive film on the hot pressing table changes. Furthermore, the winding speed of the protective film roll, the optical adhesive film roll, and the waste protective film roll and the waste optical adhesive film roll cannot be guaranteed to be synchronized, which also results in poor stability during hot pressing of the protective film and the optical adhesive film, and easily leads to material waste due to the faster winding speed of one of the film rolls. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an optical adhesive film hot pressing device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an optical adhesive film hot pressing device, comprising an L-shaped vertical plate, wherein a first roller and a second roller are arranged vertically on the outer wall of one end of the L-shaped vertical plate, and a third roller and a fourth roller are arranged vertically on the outer wall of the other end of the L-shaped vertical plate. A protective film roll is mounted on the outside of the first roller, an optical adhesive film roll is mounted on the outside of the second roller, a protective film waste roll is mounted on the outside of the third roller, and an optical adhesive film waste roll is mounted on the outside of the fourth roller. Limit caps are provided at the ends of the first roller, second roller, third roller, and fourth roller. A hot pressing device is provided in the middle of the L-shaped vertical plate. The platform has an L-shaped upright plate with a top plate fixedly connected above it. A first hydraulic cylinder is fixedly installed at the bottom of the top plate, and a hot press plate is fixedly connected vertically downward at the output end of the first hydraulic cylinder. A cutter assembly is provided at the bottom edge of the hot press plate. A slide is provided on the outer wall of the hot press platform, and a fixed shell is provided on one side of the bottom of the slide. A conveyor belt is provided on the top of the fixed shell. Limit roller groups are provided on both sides of the top of the L-shaped upright plate. A drive mechanism for controlling the synchronous rotation of the third and fourth roller shafts is installed on the rear wall of the L-shaped upright plate. An operation switch is installed on the outer wall of the end of the L-shaped upright plate.

[0007] As a further improvement to the technical solution of this utility model, the slide table is inclined, and a cutting groove is provided on the top of the hot press table at the position corresponding to the cutting assembly.

[0008] As a further improvement to the technical solution of this utility model, the top plate and the top outer wall of the L-shaped vertical plate are fixedly connected by screws, the first hydraulic cylinder is fixedly connected to the bottom of the top plate by screws, and the top of the hot press plate is fixedly connected to the output end of the first hydraulic cylinder by screws.

[0009] As a further improvement to the technical solution of this utility model, the limiting roller group includes a lower limiting roller and an upper limiting roller. The lower limiting roller is disposed below the upper limiting roller, and the ends of the lower limiting roller and the upper limiting roller are both connected to the outer wall of the L-shaped vertical plate.

[0010] As a further improvement to the technical solution of this utility model, a through hole is provided in the middle of the L-shaped upright plate near the top of the hot press table. A push plate is horizontally movable inside the through hole. A second hydraulic cylinder is connected to the outer wall of the push plate. A mounting bracket for fixing and installing the second hydraulic cylinder is fixedly connected to the rear wall of the L-shaped upright plate.

[0011] As a further improvement to the technical solution of this utility model, the driving mechanism includes a first sprocket and a second sprocket. The end of the third roller shaft is fixedly connected to the first sprocket on the rear side of the L-shaped upright plate, and the end of the fourth roller shaft is fixedly connected to the second sprocket on the rear side of the L-shaped upright plate. A chain is connected between the outer sides of the first sprocket and the second sprocket. A fixing frame is connected to the outer side of the top outer wall of the L-shaped upright plate near the first sprocket, and a motor for driving the first sprocket to rotate is installed on the outer wall of the fixing frame.

[0012] As a further improvement to the technical solution of this utility model, the fixing frame is fixedly connected to the rear wall of the L-shaped upright plate by screws, and the motor is fixedly installed on the outer wall of the fixing frame by screws.

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

[0014] 1. By setting up a drive mechanism, when in use, the motor is started to drive the first sprocket to rotate. The first sprocket drives the second sprocket to rotate synchronously through the chain, which in turn drives the third and fourth rollers to rotate synchronously, thereby making the protective film waste roll and the optical film waste roll keep synchronously wound up, and making the protective film and optical film on the protective film roll and the optical film roll keep synchronous travel.

[0015] 2. By installing limiting roller groups on both sides of the top of the hot press table, the limiting roller groups consist of upper and lower limiting rollers. The distance between the upper and lower limiting rollers can be set according to actual needs. This can limit the travel path of the protective film and optical adhesive film, so that no matter how the thickness of the protective film roll, optical adhesive film roll, protective film waste roll, and optical adhesive film waste roll changes, it will not affect the path of the protective film and optical adhesive film on the hot press table, and always keep the travel distance of the protective film and optical adhesive film on the hot press table the same, making the hot pressing of the protective film and optical adhesive film more stable. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention.

[0017] Figure 2 This is a rear view of the present invention.

[0018] Figure 3 This is a schematic diagram of the hot press table in this utility model.

[0019] Figure 4 This is a partial structural diagram of the push plate mounting location in this utility model.

[0020] The attached figures are labeled as follows: 1. L-shaped vertical plate; 2. First roller shaft; 3. Second roller shaft; 4. Protective film roll; 5. Optical adhesive film roll; 6. Limit cap; 7. Hot press table; 8. Top plate; 9. First hydraulic cylinder; 10. Hot press plate; 11. Cutting assembly; 12. Slide table; 13. Fixed shell; 14. Conveyor belt; 15. Lower limit roller; 16. Upper limit roller; 17. Third roller shaft; 18. Fourth roller shaft; 19. Protective film waste roll; 20. Optical adhesive film waste roll; 21. First sprocket; 22. Second sprocket; 23. Chain; 24. Fixing frame; 25. Motor; 26. Operating switch; 27. Through hole; 28. Push plate; 29. ​​Mounting frame; 30. Second hydraulic cylinder; 701. Cutting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] As attached Figure 1-4 An optical film hot pressing device is shown, comprising an L-shaped vertical plate 1. A first roller 2 and a second roller 3 are arranged vertically on the outer wall of one end of the L-shaped vertical plate 1. A third roller 17 and a fourth roller 18 are arranged vertically on the outer wall of the other end of the L-shaped vertical plate 1. A protective film roll 4 is mounted on the outside of the first roller 2, an optical film roll 5 is mounted on the outside of the second roller 3, a protective film waste roll 19 is mounted on the outside of the third roller 17, and an optical film waste roll 20 is mounted on the outside of the fourth roller 18. Limit caps 6 are provided at the ends of the first roller 2, second roller 3, third roller 17, and fourth roller 18. A hot pressing table 7 is provided in the middle of the L-shaped vertical plate 1, and the top of the L-shaped vertical plate 1... A top plate 8 is fixedly connected above the hot press table 7. A first hydraulic cylinder 9 is fixedly installed at the bottom of the top plate 8. A hot press plate 10 is fixedly connected vertically downward at the output end of the first hydraulic cylinder 9. A cutter assembly 11 is set at the bottom edge of the hot press plate 10. A slide table 12 is set on the outer wall of the hot press table 7. A fixed shell 13 is set on one side of the bottom of the slide table 12. A conveyor belt 14 is set on the top of the fixed shell 13. Limit roller groups are set on both sides of the outer wall of the L-shaped vertical plate 1 at the top of the hot press table 7. A drive mechanism for controlling the synchronous rotation of the third roller shaft 17 and the fourth roller shaft 18 is installed on the rear wall of the L-shaped vertical plate 1. An operation switch 26 is installed on the outer wall of the end of the L-shaped vertical plate 1.

[0023] As attached Figure 1 and attached Figure 3As shown, the slide table 12 is tilted to facilitate the subsequent sliding of the hot-pressed optical film onto the conveyor belt 14. The top of the hot-press table 7 is provided with a cutting groove 701 corresponding to the position of the cutting assembly 11, which facilitates better cutting of the hot-pressed optical film.

[0024] As attached Figure 1 As shown, the top plate 8 and the top outer wall of the L-shaped vertical plate 1 are fixedly connected by screws, the first hydraulic cylinder 9 and the bottom of the top plate 8 are fixedly connected by screws, and the top of the hot press plate 10 and the output end of the first hydraulic cylinder 9 are fixedly connected by screws, which facilitates the installation and fixing of the first hydraulic cylinder 9 and the connection and fixing of the hot press plate 10.

[0025] As attached Figure 1 As shown, the limiting roller group includes a lower limiting roller 15 and an upper limiting roller 16. The lower limiting roller 15 is located below the upper limiting roller 16. The ends of both the lower limiting roller 15 and the upper limiting roller 16 are connected to the outer wall of the L-shaped vertical plate 1. The two limiting roller groups are respectively located on the top two sides of the hot press table 7, which can limit the travel path of the protective film and the optical adhesive film. This ensures that no matter how the thickness of the protective film roll 4, the optical adhesive film roll 5, the protective film waste roll 19, and the optical adhesive film waste roll 20 changes, the path of the protective film and the optical adhesive film on the hot press table 7 will not be affected, and the travel distance of the protective film and the optical adhesive film on the hot press table 7 will always be the same, making the hot pressing of the protective film and the optical adhesive film more stable.

[0026] As attached Figure 1-2 and attached Figure 4 As shown, a through hole 27 is provided in the middle of the L-shaped upright plate 1 near the top of the hot press table 7. A pusher plate 28 is horizontally movable inside the through hole 27. A second hydraulic cylinder 30 is connected to the outer wall of the pusher plate 28. A mounting bracket 29 for fixing the second hydraulic cylinder 30 is fixedly connected to the rear wall of the L-shaped upright plate 1, so as to control the pusher plate 28 to move on the hot press table 7 during use, thereby pushing the cut film to the slide table 12, and then sliding it onto the conveyor belt 14 for conveying.

[0027] As attached Figure 1-2As shown, the drive mechanism includes a first sprocket 21 and a second sprocket 22. The end of the third roller shaft 17 is fixedly connected to the first sprocket 21 at the rear side of the L-shaped upright plate 1. The end of the fourth roller shaft 18 is fixedly connected to the second sprocket 22 at the rear side of the L-shaped upright plate 1. A chain 23 connects the outer sides of the first sprocket 21 and the second sprocket 22. A fixing frame 24 is connected to the outer side of the top outer wall of the L-shaped upright plate 1 near the first sprocket 21. A motor 25 that drives the first sprocket 21 to rotate is installed on the outer wall of the fixing frame 24. The fixing frame 24 is fixedly connected to the rear wall of the L-shaped upright plate 1 by screws. The motor 25 is fixedly installed on the outer wall of the fixing frame 24 by screws, which facilitates the control of the third roller shaft 17 and the fourth roller shaft 18 to rotate synchronously during use, thereby enabling the protective film waste roll 19 and the optical adhesive film waste roll 20 to be wound synchronously.

[0028] Working principle: This utility model designs an optical adhesive film hot pressing device, the specific structure of which is shown in the attached instruction manual. Figure 1-4 As shown, in this technical solution, by setting a drive mechanism, during use, the starting motor 25 drives the first sprocket 21 to rotate. The first sprocket 21 drives the second sprocket 22 to rotate synchronously via the chain 23, which in turn drives the third roller shaft 17 and the fourth roller shaft 18 to rotate synchronously. This causes the protective film waste roll 19 and the optical film waste roll 20 to be wound synchronously, ensuring that the protective film and optical film on the protective film roll 4 and the optical film roll 5 maintain synchronous travel. The travel direction is referenced. Figure 1 As indicated by the arrow, by installing limiting roller assemblies on both sides of the top of the hot press table 7, each limiting roller assembly consists of an upper limiting roller 16 and a lower limiting roller 15 positioned vertically. The distance between the upper limiting roller 16 and the lower limiting roller 15 can be set according to actual needs. This limits the travel path of the protective film and the optical adhesive film, ensuring that regardless of changes in the thickness of the protective film roll 4, the optical adhesive film roll 5, the protective film waste roll 19, and the optical adhesive film waste roll 20, the path of the protective film and the optical adhesive film on the hot press table 7 remains unaffected. It also maintains the same travel distance between the protective film and the optical adhesive film on the hot press table 7, resulting in greater stability during the hot pressing of the protective film and the optical adhesive film. Then, by controlling the first hydraulic cylinder 9 to push the hot press plate 9 down to start hot pressing, and using the cutter assembly 11 to cut the hot-pressed film, after cutting, the hot press plate 10 is controlled to rise, and then the second hydraulic cylinder 30 is controlled to push the pusher plate 28 to move on the hot press table 7, thereby pushing the cut film to the slide table 12, and then sliding down onto the conveyor belt 14 for conveying. It should be noted that the travel height of the protective film and optical adhesive film on the hot press table 7 is higher than the height of the pusher plate 28. After the hot pressing is completed, after the hot press plate 10 rises, the cut film is on the hot press table 7, and the remaining protective film and optical adhesive film after cutting will be pulled back to a height higher than the pusher plate 28.

[0029] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An optical adhesive film hot pressing device, comprising an L-shaped vertical plate (1), wherein a first roller (2) and a second roller (3) are arranged vertically on the outer wall of one end of the L-shaped vertical plate (1), and a third roller (17) and a fourth roller (18) are arranged vertically on the outer wall of the other end of the L-shaped vertical plate (1), wherein a protective film roll (4) is mounted on the outside of the first roller (2), an optical adhesive film roll (5) is mounted on the outside of the second roller (3), a protective film waste roll (19) is mounted on the outside of the third roller (17), and an optical adhesive film waste roll (20) is mounted on the outside of the fourth roller (18), wherein the first roller (2), the second roller (3), the third roller (17), and the fourth roller (18) are arranged vertically on the outer wall of the L-shaped vertical plate (1). Limit caps (6) are provided at the ends of the shaft (18). A hot press table (7) is provided in the middle of the L-shaped vertical plate (1), and a top plate (8) is fixedly connected above the hot press table (7) at the top of the L-shaped vertical plate (1). A first hydraulic cylinder (9) is fixedly installed at the bottom of the top plate (8). A hot press plate (10) is fixedly connected vertically downward at the output end of the first hydraulic cylinder (9). A cutter assembly (11) is provided at the bottom edge of the hot press plate (10). A slide table (12) is provided on the outer side wall of the hot press table (7). A fixed shell (13) is provided on one side of the bottom of the slide table (12). A conveyor belt (14) is provided on the top of the fixed shell (13). The feature is that: Limiting roller groups are provided on both sides of the top of the L-shaped vertical plate (1) on the outer wall of the hot press table (7). A drive mechanism for controlling the synchronous rotation of the third roller shaft (17) and the fourth roller shaft (18) is installed on the rear wall of the L-shaped vertical plate (1). An operation switch (26) is installed on the outer wall of the end of the L-shaped vertical plate (1).

2. The optical adhesive film hot pressing device according to claim 1, characterized in that: The slide (12) is inclined, and the top of the hot press (7) is provided with a cutting groove (701) corresponding to the position of the cutting assembly (11).

3. The optical adhesive film hot pressing device according to claim 1, characterized in that: The top plate (8) and the top outer wall of the L-shaped vertical plate (1) are fixedly connected by screws, the first hydraulic cylinder (9) and the bottom of the top plate (8) are fixedly connected by screws, and the top of the hot press plate (10) and the output end of the first hydraulic cylinder (9) are fixedly connected by screws.

4. The optical adhesive film hot pressing device according to claim 1, characterized in that: The limiting roller group includes a lower limiting roller (15) and an upper limiting roller (16). The lower limiting roller (15) is located below the upper limiting roller (16). The ends of the lower limiting roller (15) and the upper limiting roller (16) are both connected to the outer wall of the L-shaped vertical plate (1).

5. The optical film hot pressing device according to claim 1, characterized in that: A through hole (27) is provided in the middle of the L-shaped upright plate (1) near the top of the hot press table (7). A push plate (28) is horizontally movable inside the through hole (27). A second hydraulic cylinder (30) is connected to the outer wall of the push plate (28). A mounting bracket (29) for fixing the second hydraulic cylinder (30) is fixedly connected to the rear wall of the L-shaped upright plate (1).

6. The optical adhesive film hot pressing device according to claim 1, characterized in that: The driving mechanism includes a first sprocket (21) and a second sprocket (22). The end of the third roller shaft (17) is fixedly connected to the first sprocket (21) on the rear side of the L-shaped upright plate (1). The end of the fourth roller shaft (18) is fixedly connected to the second sprocket (22) on the rear side of the L-shaped upright plate (1). A chain (23) is connected between the outside of the first sprocket (21) and the second sprocket (22). A fixing frame (24) is connected to the top outer wall of the L-shaped upright plate (1) near the outside of the first sprocket (21). A motor (25) for driving the first sprocket (21) to rotate is installed on the outer wall of the fixing frame (24).

7. The optical adhesive film hot pressing device according to claim 6, characterized in that: The fixing frame (24) is fixedly connected to the rear wall of the L-shaped upright plate (1) by screws, and the motor (25) is fixedly installed on the outer wall of the fixing frame (24) by screws.

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