Film covering positioning device for liquid crystal screen production

Abstract

The utility model discloses a film covering positioning device for liquid crystal screen production. The film covering positioning device comprises a placing plate, a display screen body is movably placed on the top of the placing plate, a side telescopic assembly is arranged at the bottom of the placing plate, a fixing plate is arranged on the end face of the side telescopic assembly, and a lower positioning assembly is arranged on the side face of the fixing plate. According to the utility model, the side telescopic assembly and the lower positioning assembly are arranged, the side telescopic assembly is used for driving the distance between the lower positioning assembly and the fixing plate to be changed so as to be matched with display screen bodies with different widths, and then the lower positioning assembly is matched with the roller to position a film needing to be coated; when the roller moves through the driving assembly, the lower positioning assembly is pushed at the same time, the roller pushes the lower positioning assembly to incline after reaching the lower positioning assembly at the position, in this way, the lower positioning assembly positions a film, normal pressing and film covering operation of the roller is not affected, and the film covering quality and accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the field of LCD screen production equipment technology, and in particular to a coating positioning device for LCD screen production. Background Technology

[0002] LCD screens are a widely used display technology, used in televisions, computers, and smartphones. During the production process of LCD screens, a coating process is required. The purpose of the coating process is to protect the screen, making it less susceptible to scratches and bumps during production, thereby improving the user experience.

[0003] During the lamination process of LCD screens, the film is usually guided directly by rollers. The width of the rollers is not easy to adjust. If the film is not positioned, it may bend or shift during the application, affecting the overall quality of the lamination.

[0004] Therefore, how to provide a coating positioning device for LCD screen production is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a film positioning device for LCD screen production. This invention solves the problem in the prior art where the film is not properly positioned and therefore bends or shifts during application due to the difficulty in positioning the film when using rollers for guiding.

[0006] A film-coating positioning device for LCD screen production according to an embodiment of the present invention includes a placement plate, a display screen body movably placed on the top of the placement plate, a side telescopic component provided at the bottom of the placement plate, a fixing plate provided on the end face of the side telescopic component, and a lower positioning component provided on the side of the fixing plate; a side guide frame is fixedly provided at the bottom of the side telescopic component, a slider slides inside the side guide frame, a roller is rotatably connected to the slider, a fixing frame is provided on the fixing plate, and a driving component for driving the roller to move is provided on the fixing frame.

[0007] The side telescopic assembly includes a fixed cylinder, two sets of movable rods, threaded holes and double-threaded screws, a first drive motor, a first transmission wheel, and a first transmission belt. The fixed cylinder is fixed to the lower surface of the placement plate and located on its axis of symmetry. The two sets of movable rods are movably connected to the fixed cylinder and move inside the fixed cylinder. The threaded holes are opened on the opposite faces of the two sets of movable rods. The double-threaded screw is rotatably connected to the inside of the fixed cylinder, and the threaded holes are movably sleeved on the surface of the double-threaded screw. The first drive motor is fixed to the lower surface of the placement plate. There are two sets of first transmission wheels, which are respectively sleeved on the surfaces of the double-threaded screw and the output shaft of the first drive motor. The first transmission belt is movably sleeved on the surface of the first transmission wheel.

[0008] The lower positioning assembly includes a positioning plate, a positioning shaft, a rotating side rod, and a tension spring. The positioning plate is fixed to the bottom of the fixed plate, the positioning shaft is fixed to the side of the positioning plate, the rotating side rod is rotatably sleeved on the positioning shaft, one end of the tension spring is fixed to the bottom end of the rotating side rod, and the other end of the tension spring is fixed to the top of the positioning plate.

[0009] The bottom of the positioning plate is provided with a rotating block, and the bottom end of the tension spring is fixed to the upper surface of the rotating block.

[0010] The drive assembly includes a second drive motor, a movable frame, and a threaded screw. The second drive motor is fixed to the side of the fixed frame, the threaded screw is rotatably connected to the fixed frame, the output shaft of the second drive motor is fixedly connected to one end of the threaded screw, one end of the movable frame is fixed to the surface of the slider, and the movable frame is threaded onto the surface of the threaded screw.

[0011] The surface of the slider is also provided with an upper positioning assembly, which includes a side positioning frame, a double-ended threaded rod, a through hole, a telescopic rod, a sleeve plate, a side positioning wheel, a third drive motor, a second transmission wheel, and a second transmission belt. The side positioning frame is fixed to the surface of the slider, the double-ended threaded rod is rotatably connected to the side positioning frame, the through hole is opened on the slider, the telescopic rod moves inside the through hole, the side positioning wheel is set at one end of the telescopic rod, the other end of the telescopic rod is fixed to the sleeve plate, the sleeve plate is threaded onto the surface of the double-ended threaded rod, the third drive motor is fixed on the moving frame, and there are two sets of second transmission wheels, which are fixedly sleeved on the double-ended threaded rod and the output shaft of the third drive motor.

[0012] The beneficial effects of this utility model are:

[0013] By setting up a side telescopic component and a lower positioning component, the side telescopic component is used to change the distance between the lower positioning component and the fixed plate, thereby matching the display body of different widths. Then, the lower positioning component, in conjunction with the roller, positions the film to be applied. As the roller moves through the drive component, it pushes the lower positioning component. After the roller reaches the lower positioning component at that position, it pushes the lower positioning component to tilt. This not only allows the lower positioning component to position the film, but also does not affect the normal pressing and film application operation of the roller, improving the quality and accuracy of film application. It solves the problem in the prior art where the width of the roller is not easy to guide the film, which leads to the film bending and shifting during application due to lack of positioning.

[0014] By setting an upper positioning component, which works in conjunction with the lower positioning component above to position the film to be covered, the positioning effect of the film is improved. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a film-coating positioning device for LCD screen production proposed in this utility model.

[0017] Figure 2 This is a frontal cross-sectional three-dimensional structural diagram of the drive motor position in a coating positioning device for LCD screen production proposed in this utility model.

[0018] Figure 3 This is a cross-sectional three-dimensional structural diagram of the position of the upper positioning component in a film-coating positioning device for LCD screen production proposed in this utility model.

[0019] Figure 4 This is a three-dimensional cross-sectional view of the side telescopic component position in a film-coating positioning device for LCD screen production proposed in this utility model.

[0020] The attached diagram shows: 1. Placement plate; 2. Display screen body; 3. Side telescopic assembly; 4. Fixing plate; 5. Lower positioning assembly; 6. Side guide frame; 7. Slider; 8. Roller; 9. Fixing frame; 10. Drive assembly; 11. Fixing cylinder; 12. Movable rod; 13. Threaded hole; 14. Double threaded screw; 15. First drive motor; 16. First transmission wheel; 17. First transmission belt; 18. Positioning plate; 19. Positioning shaft; 20. Rotating side rod; 21. Tension spring; 22. Rotating block; 23. Second drive motor; 24. Moving frame; 25. Threaded screw; 26. Upper positioning assembly; 27. Side positioning frame; 28. Double-ended threaded rod; 29. ​​Through hole; 30. Telescopic rod; 31. Sleeve plate; 32. Side positioning wheel; 33. Third drive motor; 34. Second transmission wheel; 35. Second transmission belt. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] refer to Figure 1-4In this embodiment, a placement plate 1 is included. A display screen body 2 is movably placed on the top of the placement plate 1. A side telescopic component 3 is provided at the bottom of the placement plate 1 to drive the fixed plate 4 and the lower positioning component 5 to telescopically move, thereby adjusting the lower positioning component 5 to match display screen bodies 2 of different widths for film coating positioning. The side telescopic component 3 includes a fixed cylinder 11, two sets of movable rods 12, a threaded hole 13 and a double-threaded screw 14, a first drive motor 15, a first transmission wheel 16 and a first transmission belt 17. The fixed cylinder 11 is fixed on the lower surface of the placement plate 1 and located on its axis of symmetry. The two sets of movable rods 12 are movably connected to the fixed cylinder 11 and move inside the fixed cylinder 11. The threaded hole 13 is opened on the opposite side of the two sets of movable rods 12. The double-threaded screw 14 is rotatably connected to the inside of the fixed cylinder 11, and the threaded hole 13 is movably sleeved on the surface of the double-threaded screw 14. The machine 15 is fixed on the lower surface of the placement plate 1. There are two sets of first transmission wheels 16, which are respectively sleeved on the surfaces of the double threaded screw 14 and the output shaft of the first drive motor 15. The first transmission belt 17 is movably sleeved on the surface of the first transmission wheel 16. During operation, the first drive motor 15 needs to be started first. The start of the first drive motor 15 will drive the double threaded screw 14 to rotate through the first transmission wheel 16 and the first transmission belt 17. The rotation of the double threaded screw 14 will cause the two threaded holes 13 to move away from or towards each other. The movement of the double threaded screw 14 will cause the two sets of movable rods 12 to move away from or towards each other. The movement of the two sets of movable rods 12 will cause the fixed plate 4 to move away from or towards each other. The movement of the fixed plate 4 will cause the lower positioning component 5 to move, thereby adjusting the position of the lower positioning component 5 to match the display screen body 2 of different widths. In this way, both the display screen body 2 and the film are positioned.

[0023] The end face of the side telescopic component 3 is provided with a fixing plate 4, and the side of the fixing plate 4 is provided with a lower positioning component 5. The lower positioning component 5 includes a positioning plate 18, a positioning shaft 19, a rotating side rod 20, and a tension spring 21. The positioning plate 18 is fixed to the bottom of the fixing plate 4, the positioning shaft 19 is fixed to the side of the positioning plate 18, the rotating side rod 20 is rotatably sleeved on the positioning shaft 19, one end of the tension spring 21 is fixed to the bottom end of the rotating side rod 20, and the other end of the tension spring 21 is fixed to the top of the positioning plate 18. A rotating block 22 is provided at the bottom of the positioning plate 18, and the bottom end of the tension spring 21 is fixed. On the upper surface of the rotating block 22, after positioning, the drive assembly 10 is activated. Driven by the drive assembly 10, the slider 7 moves. The movement of the slider 7 drives the roller 8 to move along the side guide frame 6. The movement of the roller 8 presses the film. At the same time, after the roller 8 moves to the position of the rotating side rod 20 on the lower positioning assembly 5, the rotating side rod 20 is squeezed by the roller 8 and rotates around the positioning shaft 19. The tilting rotation of the rotating side rod 20 will disengage from the film. In this way, it is not easily affected when the roller 8 is covering the film. Moreover, during the film covering process, the rotating side rod 20 still positions the film and does not affect each other.

[0024] The surface of the slider 7 is also provided with an upper positioning component 26, which includes a side positioning frame 27, a double-ended threaded rod 28, a through hole 29, a telescopic rod 30, a sleeve 31, a side positioning wheel 32, a third drive motor 33, a second transmission wheel 34, and a second transmission belt 35. The side positioning frame 27 is fixed to the surface of the slider 7, the double-ended threaded rod 28 is rotatably connected to the side positioning frame 27, the through hole 29 is opened on the slider 7, the telescopic rod 30 moves inside the through hole 29, the side positioning wheel 32 is located at one end of the telescopic rod 30, and the other end of the telescopic rod 30 is connected to... The sleeve 31 is fixed and threaded onto the surface of the double-ended threaded rod 28. The third drive motor 33 is fixed on the movable frame 24. There are two sets of second transmission wheels 34, and the two sets of second transmission wheels 34 are fixedly sleeved onto the double-ended threaded rod 28 and the output shaft of the third drive motor 33. During operation, the third drive motor 33 needs to be started first. It should be noted that this operation should be performed after the lower positioning component 5 has been adjusted. After the third drive motor 33 starts, it drives the double-ended threaded rod 28 to rotate. The rotation of the double-ended threaded rod 28 will drive the two sleeves 31 to move. Figure 1 As shown, the movement of the two sleeve plates 31 will drive the movement of the two side positioning wheels 32 through the telescopic rod 30, so that the side positioning wheels 32 match the display screen body 2 of different widths. Through the cooperation of the side positioning wheels 32 and the rotating side rod 20, the display screen body 2 and the lower and upper parts of the film are synchronously fixed. After the side positioning wheel 32 moves to the appropriate position, it moves together with the roller 8 while the roller 8 moves. The movement of the roller 8 is driven by the side positioning frame 27 and the telescopic rod 30 to drive the side positioning wheel 32 to move synchronously. This not only achieves the positioning effect of the film, but also pre-presses the two sides of the film to avoid the problems of displacement and wrinkles that occur after positioning and pressing by the roller 8.

[0025] The bottom of the side telescopic assembly 3 is provided with a fixed side guide frame 6, and a slider 7 slides inside the side guide frame 6. A roller 8 is rotatably connected to the slider 7. A fixed frame 9 is provided on the fixed plate 4, and a drive assembly 10 for driving the roller 8 to move is provided on the fixed frame 9. The drive assembly 10 includes a second drive motor 23, a moving frame 24, and a threaded screw 25. The second drive motor 23 is fixed to the side of the fixed frame 9, and the threaded screw 25 is rotatably connected to the fixed frame 9. The output shaft of the second drive motor 23 is fixedly connected to one end of the threaded screw 25, and one end of the moving frame 24 is fixed to the surface of the slider 7. On the other hand, the movable frame 24 is threaded onto the surface of the threaded screw 25. During operation, starting the drive assembly 10 requires starting the second drive motor 23. Starting the second drive motor 23 will drive the threaded screw 25 to rotate. The rotation of the threaded screw 25 will drive the movable frame 24 to move. The movement of the movable frame 24 will drive the slider 7 to move along the side guide frame 6. The side guide frame 6 is fixed to the bottom of the fixed cylinder 11. In order to stabilize the side guide frame 6, the movement of the slider 7 will drive the roller 8 to move, thus achieving effective film coating. The above scheme greatly improves the quality of film coating.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lamination positioning device for LCD screen production, characterized in that, Includes a placement plate (1), on the top of which a display screen body (2) is movably placed, and at the bottom of the placement plate (1) a side telescopic component (3) is provided, with a fixing plate (4) on the end face of the side telescopic component (3) and a lower positioning component (5) on the side of the fixing plate (4). The bottom of the side telescopic assembly (3) is provided with a fixed side guide frame (6), a slider (7) slides inside the side guide frame (6), a roller (8) is rotatably connected to the slider (7), a fixed frame (9) is provided on the fixed plate (4), and a drive assembly (10) for driving the roller (8) to move is provided on the fixed frame (9).

2. The coating and positioning device for LCD screen production according to claim 1, characterized in that, The side telescopic assembly (3) includes a fixed cylinder (11), two sets of movable rods (12), a threaded hole (13), a double-threaded screw (14), a first drive motor (15), a first transmission wheel (16), and a first transmission belt (17). The fixed cylinder (11) is fixed on the lower surface of the placement plate (1) and located on its axis of symmetry. The two sets of movable rods (12) are movably connected to the fixed cylinder (11) and move inside the fixed cylinder (11). The threaded hole (13) is opened in the two sets of movable rods. On the opposite side of the moving rod (12), the double threaded screw (14) is rotatably connected inside the fixed cylinder (11), the threaded hole (13) is movably sleeved on the surface of the double threaded screw (14), the first drive motor (15) is fixed on the lower surface of the placement plate (1), the first transmission wheel (16) consists of two sets, the two sets of first transmission wheels (16) are respectively sleeved on the surface of the double threaded screw (14) and the output shaft of the first drive motor (15), and the first transmission belt (17) is movably sleeved on the surface of the first transmission wheel (16).

3. The coating and positioning device for LCD screen production according to claim 2, characterized in that, The lower positioning assembly (5) includes a positioning plate (18), a positioning shaft (19), a rotating side rod (20), and a tension spring (21). The positioning plate (18) is fixed to the bottom of the fixing plate (4), the positioning shaft (19) is fixed to the side of the positioning plate (18), the rotating side rod (20) is rotatably sleeved on the positioning shaft (19), one end of the tension spring (21) is fixed to the bottom end of the rotating side rod (20), and the other end of the tension spring (21) is fixed to the top of the positioning plate (18).

4. The coating positioning device for LCD screen production according to claim 3, characterized in that, The bottom of the positioning plate (18) is provided with a rotating block (22), and the bottom end of the tension spring (21) is fixed to the upper surface of the rotating block (22).

5. The coating and positioning device for LCD screen production according to claim 4, characterized in that, The drive assembly (10) includes a second drive motor (23), a movable frame (24), and a threaded screw (25). The second drive motor (23) is fixed to the side of the fixed frame (9), and the threaded screw (25) is rotatably connected to the fixed frame (9). The output shaft of the second drive motor (23) is fixedly connected to one end of the threaded screw (25). One end of the movable frame (24) is fixed to the surface of the slider (7), and the movable frame (24) is threaded onto the surface of the threaded screw (25).

6. The coating positioning device for LCD screen production according to claim 5, characterized in that, The surface of the slider (7) is also provided with an upper positioning component (26), which includes a side positioning frame (27), a double-ended threaded rod (28), a through hole (29), a telescopic rod (30), a sleeve plate (31), a side positioning wheel (32), a third drive motor (33), a second transmission wheel (34), and a second transmission belt (35). The side positioning frame (27) is fixed to the surface of the slider (7), and the double-ended threaded rod (28) is rotatably connected to the side positioning frame (27). The through hole (29) is opened on the slider. On block (7), the telescopic rod (30) moves inside the through hole (29), the side positioning wheel (32) is set at one end of the telescopic rod (30), the other end of the telescopic rod (30) is fixed to the sleeve plate (31), the sleeve plate (31) is threaded onto the surface of the double-ended threaded rod (28), the third drive motor (33) is fixed on the moving frame (24), the second transmission wheel (34) is in two sets, and the two sets of second transmission wheels (34) are fixedly sleeved on the double-ended threaded rod (28) and the output shaft of the third drive motor (33).

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