A hot-pressing mechanism for liquid crystal display panel production

Abstract

The utility model relates to cutting tool technical field discloses a kind of hot-pressing mechanisms for liquid crystal display production, including rack, and the front and back between the inner wall of the rack is provided with conveying mechanism and mounting plate, the top of the mounting plate is rotatably installed with threaded rod.The utility model is cooperatively used by worm gear, worm, support plate, conveyor mechanism, infrared detection mechanism and hot-pressing mechanism etc. structure, can when the display screen to be hot-pressed is conveyed to the just below heating plate, its front end will block the light path between infrared emitter and receiver, at this time, automatically lift support plate and be attached to conveying belt, provide support for subsequent display screen hot-pressing operation, avoid display screen from being tilted when hot-pressing due to the insufficient support force of conveying belt, and displacement occurs with display screen, easily cause display screen to be scalded by high temperature and damaged, and after display screen hot-pressing ends, support plate resets, avoid the friction between conveying belt and support plate in conveying process, improve the service life of conveying belt.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically a hot pressing mechanism for liquid crystal display production. Background Technology

[0002] LCD screens are widely used in mobile phones, televisions, and other applications that require displays due to their low power consumption and display quality that meets people's current needs. In the production of LCD screens, a conveyor belt is generally used to transport the display screen to the hot pressing mechanism of the equipment, where IC chips are pressed and installed onto the display screen.

[0003] For example, Chinese utility model patent application number 202321731954.0 discloses a hot-pressing mechanism for LCD screen production, including a housing. A fixing plate is fixedly connected to the inner wall of the housing. A sliding groove is provided inside the fixing plate. A left and right symmetrical slider is provided inside the sliding groove. A rack is fixedly connected to the bottom wall of one side of the slider. A gear is meshed with the outer wall of the rack. A rack is meshed with the other side of the gear. The rack is fixedly connected to the bottom wall of the other slider. A motor is provided on the top wall of the housing. In this utility model, through the cooperation between the housing, fixing plate, sliding groove, slider, rack, gear, rack, motor, rotating column, baffle one, and baffle two, the effect of correcting the screen before hot-pressing is achieved. This solves the problem that the IC chip may not be able to be installed in a fixed position due to the screen's positional deviation, and reduces the additional waste costs in production to a certain extent.

[0004] In the process of using the aforementioned patent, the display screen is first transported to the bottom of the hydraulic telescopic rod assembly via a conveyor belt. Then, the hydraulic telescopic rod assembly pushes the hot pressing plate down to hot press the chip onto the display screen. However, when the device performs hot pressing, it directly hot presses the display screen on the conveyor belt. Since the conveyor belt is a flexible material and the device lacks a bottom support structure, the display screen will tilt due to insufficient support from the conveyor belt when hot pressing. This can easily cause the display screen to be burned by the high temperature, ultimately affecting the yield and production efficiency of the hot pressing process.

[0005] Therefore, those skilled in the art have provided a hot-pressing mechanism for manufacturing liquid crystal displays to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to provide a hot-pressing mechanism for manufacturing liquid crystal displays, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A hot pressing mechanism for manufacturing liquid crystal displays includes a frame. A conveying mechanism and a mounting plate are disposed between the front and back sides of the inner wall of the frame. A threaded rod is rotatably mounted on the top of the mounting plate. A threaded cylinder is threadedly connected to the outer surface of the threaded rod. A support plate is fixedly connected to the top of the threaded cylinder. A worm gear is fixedly sleeved on the outer surface of the threaded rod. A drive motor is fixedly mounted on the front of the frame. A worm gear is fixedly connected to the output end of the drive motor. Two telescopic rods are fixedly connected to the top of the mounting plate. An infrared detection mechanism is disposed on the top of the frame. An L-shaped plate is fixedly connected to the top of the frame. A hot pressing mechanism is disposed on the L-shaped plate. Two sets of straightening mechanisms are disposed on the top of the frame.

[0009] As a further description of the above technical solution:

[0010] The worm gear is rotatably installed between the front and back sides of the inner wall of the frame, the worm wheel meshes with the worm gear, and the telescopic ends of the two telescopic rods are fixedly connected to the support plate.

[0011] By adopting the above technical solution, the lifting and lowering of the support plate can be achieved through the transmission of worm gears.

[0012] As a further description of the above technical solution:

[0013] The conveying mechanism includes a second drive motor, a driven roller, and several push rollers. The second drive motor is fixedly installed on the front of the frame, and the output end of the second drive motor is fixedly connected to a drive roller. The driven roller and several push rollers are rotatably installed between the front and back sides of the inner wall of the frame. The drive roller and the driven roller are connected by a conveyor belt.

[0014] By adopting the above technical solution, the conveyor belt can drive the display screen and transport it automatically.

[0015] As a further description of the above technical solution:

[0016] The drive roller is rotatably mounted between the front and back sides of the inner wall of the frame.

[0017] As a further description of the above technical solution:

[0018] The infrared detection mechanism includes an infrared transmitter and an infrared receiver fixedly installed on the top of the frame, and the infrared transmitter and infrared receiver are arranged symmetrically.

[0019] By adopting the above technical solution, when the display screen to be heated is conveyed to the underside of the heating plate, its front end will block the light path between the infrared transmitter and the receiver, and at this time the support plate will automatically rise and fit with the conveyor belt.

[0020] As a further description of the above technical solution:

[0021] The hot pressing mechanism includes a hydraulic telescopic rod fixedly installed on an L-shaped plate, and a heating plate is fixedly connected to the telescopic end of the hydraulic telescopic rod.

[0022] By adopting the above technical solution, it is possible to perform hot pressing on the screen to be hot-pressed.

[0023] As a further description of the above technical solution:

[0024] The correction mechanism includes a fixed shaft fixedly installed on the top of the frame, a support ring fixedly sleeved on the outer surface of the fixed shaft, a correction plate movably sleeved on the outer surface of the fixed shaft, and a positioning nut threadedly connected to the outer surface of the fixed shaft.

[0025] By adopting the above technical solution, the angle of the two correction plates can be adjusted according to the width of the current batch of displays, ensuring that the display is directly facing the heating plate when it is delivered to the bottom of the heating plate.

[0026] As a further description of the above technical solution:

[0027] The control panel and PLC controller are fixedly mounted on the front of the frame.

[0028] This utility model has the following beneficial effects:

[0029] 1. Compared with existing technologies, this LCD screen production hot pressing mechanism, through the coordinated use of structures such as worm gear, worm, support plate, conveyor mechanism, infrared detection mechanism, and hot pressing mechanism, can block the light path between the infrared transmitter and receiver when the display screen to be hot-pressed is conveyed to the underside of the heating plate. At this time, the support plate is automatically raised to fit against the conveyor belt, providing support for the subsequent display screen hot pressing operation. This prevents the display screen from tilting due to insufficient support from the conveyor belt during hot pressing, which could cause the display screen to shift and be easily damaged by high temperature. At the same time, after the display screen hot pressing is completed, the support plate is reset, avoiding friction between the conveyor belt and the support plate during transportation and improving the service life of the conveyor belt.

[0030] 2. Compared with the prior art, the hot pressing mechanism for LCD screen production, through the setting of the correction mechanism, can adjust the angle of the two correction plates according to the width of the current batch of screens, ensuring that the screen is directly facing the heating plate when it is transported to the bottom of the heating plate, avoiding the screen from shifting during the transport process, thereby improving the accuracy of the hot pressing position. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a hot pressing mechanism for producing a liquid crystal display screen, as proposed in this utility model.

[0032] Figure 2 This is a schematic diagram of the structure of an L-shaped plate and heating plate in a hot pressing mechanism for producing a liquid crystal display screen, as proposed in this utility model.

[0033] Figure 3 This is a schematic diagram of the worm gear and worm shaft structure of a hot pressing mechanism for producing a liquid crystal display screen, as proposed in this utility model.

[0034] Figure 4 This is a schematic diagram of the correcting plate and fixed shaft of a hot pressing mechanism for producing a liquid crystal display screen, as proposed in this utility model.

[0035] In the diagram: 1. Frame; 2. Mounting plate; 3. Threaded rod; 4. Threaded cylinder; 5. Support plate; 6. Worm gear; 7. Drive motor one; 8. Telescopic rod; 9. Worm; 10. L-shaped plate; 11. Drive motor two; 12. Driven roller; 13. Push roller; 14. Driven roller; 15. Conveyor belt; 16. Infrared transmitter; 17. Infrared receiver; 18. Hydraulic telescopic rod; 19. Heating plate; 20. Fixed shaft; 21. Support ring; 22. Straightening plate; 23. Positioning nut; 24. Control panel; 25. PLC controller. Detailed Implementation

[0036] 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.

[0037] Please see Figure 1-4 In this embodiment of the present invention, a hot pressing mechanism for producing a liquid crystal display screen includes a frame 1. A conveying mechanism and a mounting plate 2 are arranged between the front and back sides of the inner wall of the frame 1. A threaded rod 3 is rotatably mounted on the top of the mounting plate 2. A threaded cylinder 4 is threadedly connected to the outer surface of the threaded rod 3. A support plate 5 is fixedly connected to the top of the threaded cylinder 4. A worm gear 6 is fixedly sleeved on the outer surface of the threaded rod 3. A drive motor 7 is fixedly mounted on the front side of the frame 1. A worm 9 is fixedly connected to the output end of the drive motor 7. Two telescopic rods 8 are fixedly connected to the top of the mounting plate 2. An infrared detection mechanism is arranged on the top of the frame 1. An L-shaped plate 10 is fixedly connected to the top of the frame 1. A hot pressing mechanism is arranged on the L-shaped plate 10. Two sets of straightening mechanisms are arranged on the top of the frame 1. The worm 9 is rotatably mounted between the front and back sides of the inner wall of the frame 1. The worm gear 6 meshes with the worm 9. The telescopic ends of the two telescopic rods 8 are fixedly connected to the support plate 5. A control panel 24 and a PLC controller 25 are fixedly mounted on the front side of the frame 1.

[0038] The conveying mechanism includes a second drive motor 11, a driven roller 12, and several push rollers 13. The second drive motor 11 is fixedly installed on the front of the frame 1. The output end of the second drive motor 11 is fixedly connected to a drive roller 14. The driven roller 12 and several push rollers 13 are rotatably installed between the front and back sides of the inner wall of the frame 1. The drive roller 14 and the driven roller 12 are connected by a conveyor belt 15. The drive roller 14 is rotatably installed between the front and back sides of the inner wall of the frame 1.

[0039] The infrared detection mechanism includes an infrared transmitter 16 and an infrared receiver 17 fixedly mounted on the top of the rack 1, and the infrared transmitter 16 and the infrared receiver 17 are arranged symmetrically.

[0040] The hot pressing mechanism includes a hydraulic telescopic rod 18 fixedly installed on the L-shaped plate 10, and a heating plate 19 is fixedly connected to the telescopic end of the hydraulic telescopic rod 18.

[0041] Through the coordinated use of structures such as the worm gear 6, worm 9, support plate 5, conveyor mechanism, infrared detection mechanism, and hot pressing mechanism, when the display screen to be hot-pressed is conveyed to the underside of the heating plate 19, its front end will block the light path between the infrared transmitter and receiver. At this time, the support plate 5 will automatically rise and fit against the conveyor belt 15, providing support for the subsequent hot pressing operation of the display screen. This prevents the display screen from tilting due to insufficient support from the conveyor belt 15 during hot pressing, which could cause the display screen to shift and be easily damaged by high temperature. At the same time, after the display screen is hot-pressed, the support plate 5 will reset, avoiding friction between the conveyor belt 15 and the support plate 5 during the conveying process, thus improving the service life of the conveyor belt 15.

[0042] The correction mechanism includes a fixed shaft 20 fixedly installed on the top of the frame 1, a support ring 21 fixedly sleeved on the outer surface of the fixed shaft 20, a correction plate 22 movably sleeved on the outer surface of the fixed shaft 20, and a positioning nut 23 threadedly connected to the outer surface of the fixed shaft 20.

[0043] By setting up the correction mechanism, the angle of the two correction plates 22 can be adjusted according to the width of the current batch of displays, ensuring that the display is directly facing the heating plate 19 when it is transported to the bottom of the heating plate 19, avoiding the offset of the display during the transport process, thereby improving the accuracy of the hot pressing position.

[0044] The working principle of this utility model is as follows: When the display screen needs to be hot-pressed, the operator first adjusts the position of the two straightening plates 22 according to the width of the current batch of display screens. By turning the knob positioning nut 23, the fixing of the straightening plates 22 is released. Then, the straightening plates 22 are rotated along the fixed axis 20 so that the distance between the vertical plates of the two straightening plates 22 and the inner wall of the two side frames 1 is equal to the width of the display screen. The center area between the two straightening plates 22 is aligned with the working area of ​​the heating plate 19. Then, the positioning nut 23 is tightened to fix the angle of the straightening plates 22. This ensures that the display screen is aligned with the heating plate 19 when it is transported to the bottom of the heating plate 19, avoiding the offset of the display screen during the transport process, thereby improving the accuracy of the hot-pressing position.

[0045] Subsequently, the staff started the drive motor 11 through the control panel 24. The output end of the drive motor 11 drove the active roller 14 to rotate. The active roller 14 drove the driven roller 12 to rotate through the conveyor belt 15, thereby realizing that the conveyor belt 15 drove the display screen to be heated to move towards the heating plate 19. When the display screen to be heated is transported between the two straightening plates 22, the display screen to be heated is corrected in position along the guide surface of the two straightening plates 22.

[0046] When the display screen to be heated is delivered directly below the heating plate 19, its front end will block the light path between the infrared transmitter 16 and the infrared receiver 17. At this time, the infrared receiver 17 will transmit the signal to the PLC controller 25, and the PLC controller 25 will shut down the second drive motor 11 and start the first drive motor 7 and the hydraulic telescopic rod 18.

[0047] The output of drive motor 7 drives worm 9 to rotate clockwise, which in turn drives worm wheel 6 to rotate clockwise, thereby driving threaded rod 3 to rotate. Threaded cylinder 4 drives support plate 5 to rise. When support plate 5 is in contact with conveyor belt 15, drive motor 7 is turned off. At the same time, the telescopic end of hydraulic telescopic rod 18 drives heating plate 19 to move downwards to heat press the display screen. After the heat pressing operation is completed, drive motor 7 is restarted. The output of drive motor 7 drives worm 9 to rotate counterclockwise, thereby driving worm wheel 6 and threaded rod 3 to rotate counterclockwise, so that threaded cylinder 4 drives support plate 5 to reset. Hydraulic telescopic rod 18 retracts, driving heating plate 19 to reset. Finally, drive motor 11 is restarted. The output of drive motor 11 drives drive roller 14 to rotate, which in turn drives driven roller 12 to rotate, so that conveyor belt 15 drives the heat-pressed display screen to the next process.

[0048] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A hot-pressing mechanism for manufacturing liquid crystal displays, comprising a frame (1), characterized in that, A conveying mechanism and a mounting plate (2) are provided between the front and back sides of the inner wall of the frame (1). A threaded rod (3) is rotatably mounted on the top of the mounting plate (2). A threaded cylinder (4) is threadedly connected to the outer surface of the threaded rod (3). A support plate (5) is fixedly connected to the top of the threaded cylinder (4). A worm gear (6) is fixedly sleeved on the outer surface of the threaded rod (3). A drive motor (7) is fixedly mounted on the front of the frame (1). A worm gear (9) is fixedly connected to the output end of the drive motor (7). Two telescopic rods (8) are fixedly connected to the top of the mounting plate (2). An infrared detection mechanism is provided on the top of the frame (1). An L-shaped plate (10) is fixedly connected to the top of the frame (1). A hot pressing mechanism is provided on the L-shaped plate (10). Two sets of correction mechanisms are provided on the top of the frame (1).

2. The hot pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that, The worm (9) is rotatably mounted between the front and back sides of the inner wall of the frame (1), the worm wheel (6) meshes with the worm (9), and the telescopic ends of the two telescopic rods (8) are fixedly connected to the support plate (5).

3. The hot pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that, The conveying mechanism includes a second drive motor (11), a driven roller (12), and several booster rollers (13). The second drive motor (11) is fixedly installed on the front of the frame (1). The output end of the second drive motor (11) is fixedly connected to an active roller (14). The driven roller (12) and several booster rollers (13) are rotatably installed between the front and back sides of the inner wall of the frame (1). The active roller (14) and the driven roller (12) are connected by a conveyor belt (15).

4. The hot pressing mechanism for producing a liquid crystal display screen according to claim 3, characterized in that, The active roller (14) is rotatably mounted between the front and back sides of the inner wall of the frame (1).

5. A hot-pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that, The infrared detection mechanism includes an infrared transmitter (16) and an infrared receiver (17) fixedly installed on the top of the frame (1), and the infrared transmitter (16) and the infrared receiver (17) are arranged symmetrically.

6. The hot pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that, The hot pressing mechanism includes a hydraulic telescopic rod (18) fixedly installed on an L-shaped plate (10), and a heating plate (19) is fixedly connected to the telescopic end of the hydraulic telescopic rod (18).

7. A hot-pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that, The correction mechanism includes a fixed shaft (20) fixedly installed on the top of the frame (1), a support ring (21) fixedly sleeved on the outer surface of the fixed shaft (20), a correction plate (22) movably sleeved on the outer surface of the fixed shaft (20), and a positioning nut (23) threadedly connected to the outer surface of the fixed shaft (20).

8. A hot-pressing mechanism for producing a liquid crystal display screen according to claim 1, characterized in that, The front of the frame (1) is fixedly equipped with a control panel (24) and a PLC controller (25).

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