An optical film coating machine

By designing an optical film coating machine, the tension of the optical film is adjusted using a combination of movable wheels and a motor. The guide plate adapts to films of different sizes, and the coating is dried by a hot air blower. This solves the problem of uneven optical film coating and improves product quality and applicability.

CN224271768UActive Publication Date: 2026-05-26GUANGDONG ZHENGDE IND TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG ZHENGDE IND TECHNOLOGY CO LTD
Filing Date
2025-05-06
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing coating machines cannot adjust the tension of the optical film, causing the optical film to be in a loose state during the coating process, which affects the uniform spraying of the coating and thus affects product quality.

Method used

An optical film coating machine was designed. The tension of the optical film is adjusted by a combination of movable wheels, a first motor, a rotating shaft, a moving rod, and a movable rod. The combination of a guide plate, a second motor, a rotating shaft, and a spring is used to guide optical films of different sizes. The combination of a hot air blower and a spray nozzle enables uniform spraying and drying of the coating.

Benefits of technology

This achieves a taut state for the optical film, ensuring uniform coating, improving product quality, and expanding the application range of the coating machine.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224271768U_ABST
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Abstract

This utility model belongs to the technical field of optical film processing equipment and discloses an optical film coating machine, including a worktable. Two long blocks are fixedly connected to the left side of the top of the worktable in both the front and rear directions. A round rod is movably connected between the two long blocks, and a movable wheel is movably fitted onto the outer surface of the round rod, located between the two long blocks. This utility model, by setting up a movable wheel, a first motor, a rotating shaft, a moving rod, and a movable rod, allows the operator to start the first motor, causing the rotating shaft and the moving rod to rotate. This causes the movable rod to push a first rectangular block, a round rod, a movable wheel, and a second rectangular block upwards, increasing the tension of the optical film on the outer surface of the movable wheel. This keeps the optical film taut, preventing uneven coating due to surface relaxation, which would affect product quality.
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Description

Technical Field

[0001] This utility model belongs to the technical field of optical film processing equipment, specifically an optical film coating machine. Background Technology

[0002] The characteristics of optical thin films are: smooth surface, geometrically segmented interfaces between film layers, and during fabrication, the optical and physical properties of the thin film deviate from those of bulk materials. Its surface and interfaces are rough, which leads to diffuse scattering of light beams.

[0003] Currently, operators frequently use coating machines when processing optical films. However, while existing coating machines have basic paint spraying capabilities, they cannot adjust the tension of the optical film during the coating process. This results in the optical film being in a slack state, which prevents the paint from being evenly sprayed onto the surface of the optical film during subsequent coating operations, thus affecting the product quality. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to address the above problems by providing an optical film coating machine with the advantage of adjustable tension.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an optical film coating machine, comprising a worktable, with two long blocks fixedly connected to the left side of the top of the worktable in both the front and rear directions. A circular rod is movably connected between the interiors of the two long blocks. A movable wheel located between the two long blocks is movably sleeved on the outer surface of the circular rod. A first rectangular block and a second rectangular block located opposite each other on the front and rear ends of the circular rod are respectively fixedly connected. The opposite faces of the first and second rectangular blocks are movably connected to the opposite faces of the two long blocks. A first motor is fixedly installed on the left side of the front of the worktable. A rotating shaft is fixedly sleeved on the other end of the output shaft of the first motor. A moving rod is fixedly sleeved on the outer surface of the rotating shaft. A movable rod is hinged to the other end of the moving rod, and the other end of the movable rod is hinged to the bottom end of the first rectangular block.

[0006] As a preferred embodiment of this utility model, a material carrier rack located on the left side of the two long blocks is fixedly connected to both the front and rear sides of the top of the workbench, a guide plate located on the right side of the two long blocks is movably installed on both the front and rear sides of the top of the workbench, and a support column is fixedly connected to each of the four corners of the bottom of the workbench.

[0007] In a preferred embodiment of this utility model, a movable block located inside the workbench is fixedly connected to the bottom end of the guide plate. The outer surface of the movable block is movably connected to the interior of the workbench. A movable block is fixedly connected to the bottom end of the movable block. A spring is fixedly connected to the outer side of the movable block. The other end of the spring is fixedly connected to the interior of the workbench.

[0008] As a preferred embodiment of this utility model, a second motor is fixedly installed on the left side of the bottom end of the workbench, and a rotating shaft is fixedly sleeved on the other end of the output shaft of the second motor, with a protruding block fixedly sleeved on the outer surface of the rotating shaft.

[0009] As a preferred embodiment of this utility model, the top of the workbench is fixedly connected to a work box located on the right side of the guide plate, and the inside of the top left side of the work box is fixedly connected to a feed inlet. The top of the feed inlet passes through the work box and extends to the outside of the top of the work box. The bottom of the feed inlet is fixedly connected to a hollow block, and the bottom of the hollow block is fixedly connected to a nozzle.

[0010] As a preferred embodiment of this utility model, a hot air blower is fixedly installed on the right side of the top of the work box, an exhaust port is fixedly connected to the top of the hot air blower, an exhaust port is fixedly connected to the bottom of the exhaust port, and the bottom of the exhaust port passes through the work box and extends into the interior of the work box.

[0011] In a preferred embodiment of this utility model, mounting plates No. 1 and No. 2, located on the right side of the work box, are fixedly connected to the front and rear sides of the top of the work platform, respectively. A third motor is fixedly installed on the top of the front of mounting plate No. 1. A round shaft located inside mounting plate No. 1 is fixedly sleeved at the other end of the output shaft of the third motor. The outer surface of the round shaft is movably connected to the interior of mounting plate No. 1. A take-up roller is fixedly connected to the other end of the round shaft. A movable shaft located inside mounting plate No. 2 is fixedly connected to the other end of the take-up roller. The outer surface of the movable shaft is movably connected to the interior of mounting plate No. 2. Both the front and rear ends of the take-up roller are movably connected to the opposite surfaces of mounting plates No. 1 and No. 2, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting up a movable wheel, a first motor, a rotating shaft, a moving rod, and a movable rod, allows the operator to start the first motor, which will cause the rotating shaft and the moving rod to rotate. This causes the movable rod to push the first rectangular block, the round rod, the movable wheel, and the second rectangular block upwards, thereby increasing the tension of the optical film on the outer surface of the movable wheel. This keeps the optical film in a taut state, preventing uneven coating of subsequent paint due to the looseness of the optical film surface, which would affect the quality of the product.

[0014] 2. This utility model, by setting up a guide plate, a second motor, a rotating shaft, and springs, allows the operator to start the second motor, which will cause the rotating shaft to drive the convex block to rotate. This causes the outer surface of the convex block to press and push the opposing surfaces of the two movable blocks, which in turn cause the two movable blocks to drive the two moving blocks and the two guide plates to move in opposite directions. At this time, the two springs will be compressed, increasing the distance between the two guide plates. This allows the operator to guide optical films of different sizes, thereby increasing the application range of the coating machine. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the front of the present invention;

[0017] Figure 3 This is a cross-sectional view of the side of the present invention;

[0018] Figure 4 This is a cross-sectional view of the bottom of the present invention;

[0019] Figure 5 This is a cross-sectional view of the side of the third motor of this utility model;

[0020] Figure 6 This is a cross-sectional view of the side of the second motor of this utility model.

[0021] In the diagram: 1. Workbench; 2. Long block; 3. Round rod; 4. Movable wheel; 5. Rectangular block No. 1; 6. Rectangular block No. 2; 7. First motor; 8. Rotating shaft; 9. Moving rod; 10. Movable rod; 11. Material rack; 12. Guide plate; 13. Moving block; 14. Second motor; 15. Rotating shaft; 16. Convex block; 17. Movable block; 18. Spring; 19. Work box; 20. Feed inlet; 21. Hollow block; 22. Nozzle; 23. Hot air blower; 24. Exhaust vent; 25. Vent; 26. Mounting plate No. 1; 27. Mounting plate No. 2; 28. Third motor; 29. ​​Round shaft; 30. Take-up roller; 31. Movable shaft; 32. Support column. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 6 As shown, this utility model provides an optical film coating machine, including a worktable 1. Two long blocks 2 are fixedly connected to the left side of the top of the worktable 1 in both the front and back directions. The two long blocks 2 are movably connected between the interior of the two long blocks 2. The outer surface of the round rod 3 is movably sleeved with a movable wheel 4 located between the two long blocks 2. The front and rear ends of the round rod 3 are respectively fixedly connected with a first rectangular block 5 and a second rectangular block 6 located on opposite sides of the two long blocks 2. The opposite faces of the first rectangular block 5 and the second rectangular block 6 are movably connected to the opposite sides of the two long blocks 2. A first motor 7 is fixedly installed on the left side of the front of the worktable 1. The other end of the output shaft of the first motor 7 is fixedly sleeved with a rotating shaft 8. The outer surface of the rotating shaft 8 is fixedly sleeved with a moving rod 9. The other end of the moving rod 9 is hinged with a movable rod 10. The other end of the movable rod 10 is hinged to the bottom end of the first rectangular block 5.

[0024] When the operator starts the first motor 7, the rotating shaft 8 and the moving rod 9 will rotate, which will cause the moving rod 10 to push the first rectangular block 5, the round rod 3, the moving wheel 4 and the second rectangular block 6 upward, thereby increasing the tension of the optical film and preventing the optical film surface from loosening and wrinkling during subsequent coating operations, which would affect the quality of the coating operation of the product.

[0025] The workbench 1 has a material rack 11 fixedly connected to the front and rear sides of the top of the workbench 1, located on the left side of the two long blocks 2. The workbench 1 has a guide plate 12 movably installed on the front and rear sides of the top of the workbench 1, located on the right side of the two long blocks 2. The workbench 1 has a support column 32 fixedly connected to the four corners of the bottom.

[0026] The design of the two guide plates 12 enables them to provide excellent guidance for the optical film.

[0027] The bottom end of the guide plate 12 is fixedly connected to a movable block 13 located inside the workbench 1. The outer surface of the movable block 13 is movably connected to the interior of the workbench 1. The bottom end of the movable block 13 is fixedly connected to a movable block 17. The outer side of the movable block 13 is fixedly connected to a spring 18. The other end of the spring 18 is fixedly connected to the interior of the workbench 1.

[0028] Due to the design of the two moving blocks 13, the movement of the two guide plates 12 can be well limited.

[0029] The second motor 14 is fixedly installed on the left side of the bottom of the workbench 1. The other end of the output shaft of the second motor 14 is fixedly sleeved with a rotating shaft 15. A convex block 16 is fixedly sleeved on the outer surface of the rotating shaft 15.

[0030] When the operator starts the second motor 14, the rotating shaft 15 will drive the convex block 16 to rotate.

[0031] The top of the workbench 1 is fixedly connected to the work box 19 located on the right side of the guide plate 12. The inside of the top left side of the work box 19 is fixedly connected to the feed inlet 20. The top of the feed inlet 20 passes through the work box 19 and extends to the outside of the top of the work box 19. The bottom of the feed inlet 20 is fixedly connected to the hollow block 21. The bottom of the hollow block 21 is fixedly connected to the nozzle 22.

[0032] The operator connects the paint delivery pipe to the inlet 20, so that the paint will pass through the hollow block 21 and then be sprayed out from the nozzle 22.

[0033] A hot air blower 23 is fixedly installed on the right side of the top of the work box 19. An exhaust port 24 is fixedly connected to the top of the hot air blower 23. An exhaust port 25 is fixedly connected to the bottom of the exhaust port 24. The bottom of the exhaust port 25 passes through the work box 19 and extends into the interior of the work box 19.

[0034] When the operator starts the hot air blower 23, the exhaust port 24 will draw in outside air, and then the cold air will be converted into hot air and discharged from the exhaust port 25 into the interior of the work box 19.

[0035] Among them, the front and rear sides of the top of the workbench 1 are respectively fixedly connected to the first mounting plate 26 and the second mounting plate 27 located on the right side of the work box 19. The top of the front of the first mounting plate 26 is fixedly installed with the third motor 28. The other end of the output shaft of the third motor 28 is fixedly sleeved with the round shaft 29 located inside the first mounting plate 26. The outer surface of the round shaft 29 is movably connected to the interior of the first mounting plate 26. The other end of the round shaft 29 is fixedly connected with the take-up roller 30. The other end of the take-up roller 30 is fixedly connected with the movable shaft 31 located inside the second mounting plate 27. The outer surface of the movable shaft 31 is movably connected to the interior of the second mounting plate 27. The front and rear ends of the take-up roller 30 are movably connected to the opposite surfaces of the first mounting plate 26 and the second mounting plate 27, respectively.

[0036] When the operator starts the third motor 28, the circular shaft 29 will drive the take-up roller 30 and the movable shaft 31 to rotate.

[0037] Working principle and usage process of this utility model:

[0038] First, the operator adjusts the distance between the two guide plates 12 according to the size of the optical film to be coated. At this time, the second motor 14 is started, which will cause the rotating shaft 15 and the convex block 16 to rotate. This causes the outer surface of the convex block 16 to press and push the opposite surfaces of the two movable blocks 17, thereby causing the two movable blocks 17 to drive the two moving blocks 13 and the two guide plates 12 to move in opposite directions. At this time, the two springs 18 are in a compressed state, which enables the two guide plates 12 to guide optical films of different sizes. Then, the operator puts the optical film into the inside of the two material racks 11, places one end of the optical film on the top of the outer surface of the movable wheel 4, and then passes through the opposite surfaces of the two guide plates 12 and the inside of the work box 19 and wraps it around the outer surface of the take-up roller 30.

[0039] Finally, the operator connects and fixes the paint delivery pipe to the feed inlet 20, and runs the first motor 7, the hot air blower 23, and the third motor 28. The connection of the paint delivery pipe allows the paint to pass through the feed inlet 20 and the hollow block 21 and be sprayed from the nozzle 22 onto the outer surface of the optical film. The operation of the first motor 7 causes the rotating shaft 8 and the moving rod 9 to rotate, which in turn causes the moving rod 10 to push the first rectangular block 5, the moving wheel 4, and the second rectangular block 6 upward, thereby increasing the tension of the optical film and ensuring that the paint is evenly sprayed onto the outer surface of the optical film during the coating operation. The operation of the hot air blower 23 causes the exhaust port 24 to draw in outside air and then converts the cold air into hot air, which is then sprayed out from the exhaust port 25 to dry the paint on the surface of the optical film. The operation of the third motor 28 causes the round shaft 29 to drive the winding roller 30 and the moving shaft 31 to rotate, thereby enabling the winding operation of the dried optical film.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An optical film coating machine, comprising a worktable (1), characterized in that: Two long blocks (2) are fixedly connected to the left side of the top of the workbench (1) in both the front and back directions. A round rod (3) is movably connected between the interior of the two long blocks (2). A movable wheel (4) located between the two long blocks (2) is movably sleeved on the outer surface of the round rod (3). A first rectangular block (5) and a second rectangular block (6) located on opposite sides of the two long blocks (2) are fixedly connected to the front and back ends of the round rod (3), respectively. The opposite faces of the first rectangular block (5) and the second rectangular block (6) are movably connected to the opposite sides of the two long blocks (2). A first motor (7) is fixedly installed on the left side of the front of the workbench (1). A rotating shaft (8) is fixedly sleeved on the other end of the output shaft of the first motor (7). A moving rod (9) is fixedly sleeved on the outer surface of the rotating shaft (8). A movable rod (10) is hinged to the other end of the moving rod (9). The other end of the movable rod (10) is hinged to the bottom end of the first rectangular block (5).

2. The optical film coating machine according to claim 1, characterized in that: The front and rear sides of the top of the workbench (1) are fixedly connected to the material rack (11) located on the left side of the two long blocks (2). The front and rear sides of the top of the workbench (1) are movably installed with the guide plate (12) located on the right side of the two long blocks (2). The four corners of the bottom of the workbench (1) are fixedly connected with the support column (32).

3. The optical film coating machine according to claim 2, characterized in that: The bottom end of the guide plate (12) is fixedly connected to a movable block (13) located inside the workbench (1). The outer surface of the movable block (13) is movably connected to the interior of the workbench (1). The bottom end of the movable block (13) is fixedly connected to a movable block (17). The outer side of the movable block (13) is fixedly connected to a spring (18). The other end of the spring (18) is fixedly connected to the interior of the workbench (1).

4. The optical film coating machine according to claim 1, characterized in that: A second motor (14) is fixedly installed on the left side of the bottom end of the workbench (1). A rotating shaft (15) is fixedly sleeved on the other end of the output shaft of the second motor (14). A convex block (16) is fixedly sleeved on the outer surface of the rotating shaft (15).

5. An optical film coating machine according to claim 1, characterized in that: The top of the workbench (1) is fixedly connected to a work box (19) located to the right of the guide plate (12). The inside of the top left side of the work box (19) is fixedly connected to a feed inlet (20). The top of the feed inlet (20) passes through the work box (19) and extends to the outside of the top of the work box (19). The bottom of the feed inlet (20) is fixedly connected to a hollow block (21). The bottom of the hollow block (21) is fixedly connected to a nozzle (22).

6. An optical film coating machine according to claim 5, characterized in that: A hot air blower (23) is fixedly installed on the right side of the top of the work box (19). An exhaust port (24) is fixedly connected to the top of the hot air blower (23). An exhaust port (25) is fixedly connected to the bottom of the exhaust port (24). The bottom of the exhaust port (25) passes through the work box (19) and extends into the interior of the work box (19).

7. An optical film coating machine according to claim 1, characterized in that: The front and rear sides of the top of the workbench (1) are respectively fixedly connected to the first mounting plate (26) and the second mounting plate (27) located on the right side of the work box (19). The top of the front of the first mounting plate (26) is fixedly installed with a third motor (28). The other end of the output shaft of the third motor (28) is fixedly sleeved with a round shaft (29) located inside the first mounting plate (26). The outer surface of the round shaft (29) is movably connected to the interior of the first mounting plate (26). The other end of the round shaft (29) is fixedly connected with a take-up roller (30). The other end of the take-up roller (30) is fixedly connected with a movable shaft (31) located inside the second mounting plate (27). The outer surface of the movable shaft (31) is movably connected to the interior of the second mounting plate (27). The front and rear ends of the take-up roller (30) are movably connected to the opposite surfaces of the first mounting plate (26) and the second mounting plate (27), respectively.