Clamping tool for appearance detection of liquid crystal display screen

Abstract

The utility model discloses a clamping tool for appearance detection of a liquid crystal display screen, which belongs to the technical field of liquid crystal display screen detection tools and comprises a platform, a fixing frame is fixed on the rear side of the upper end of the platform, and a telescopic cylinder is mounted at the upper end of the fixing frame. One end of a liquid crystal display screen needing to be detected is placed in one folded plate, then the electric push rod is started to push the other folded plate to move, the other end of the liquid crystal display screen enters the other folded plate, the screw is screwed to drive the abutting plate to move in the folded plates, and the abutting plate is matched with the folded plates to clamp and fix the two ends of the liquid crystal display screen. After one side of the liquid crystal display screen is detected, a first motor is started to drive a worm to rotate, the worm rotates to drive a rotating shaft to rotate in a vertical plate through a turbine, the rotating shaft rotates to drive a folding plate to rotate, the folding plate rotates to drive the liquid crystal display screen to rotate, the clamped and fixed liquid crystal display screen can be automatically turned over by arranging a clamping assembly, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of LCD screen inspection tooling technology, specifically relating to a clamping tooling for LCD screen appearance inspection. Background Technology

[0002] Liquid crystal displays (LCDs) are a type of flat panel display used in televisions and computers. Their advantages include low power consumption, small size, and low radiation. LCDs utilize a liquid crystal solution in two polarizing materials; when an electric current passes through the liquid, the crystals rearrange to achieve image formation.

[0003] Chinese patent application number 2023214952033 discloses a testing platform with clamping fixtures, including a concave testing platform. A rotary motor is fixed to the bottom of the concave testing platform, and the output shaft of the rotary motor passes through the concave testing platform. This testing platform with clamping fixtures is equipped with protective components. When the LCD module is clamped, the rotary motor continues to work, causing the inclined rod to tilt, which in turn causes the abutment rod to move downward. When the bottom of the abutment rod abuts the top of the long plate, the long plate moves downward, causing the inclined block to enter the inclined groove of the long plate. When the inclined block abuts the inner wall of the inclined groove of the long plate, the long plate will limit the gear, preventing the gear from continuing to rotate and the rack from continuing to move inward. The clamping plate cannot continue to clamp the LCD module, thus preventing the LCD module from being damaged due to excessive clamping force caused by the operator not turning off the rotary motor in time.

[0004] The aforementioned patent cannot automatically flip the LCD screen to be tested. When the other side of the LCD screen needs to be tested, it needs to be flipped manually. The device has poor automation. In addition, after the original device clamps and fixes the LCD screen, it cannot move or adjust the LCD screen to be tested, which is not convenient for testing different positions of the LCD screen. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a clamping fixture for inspecting the appearance of a liquid crystal display screen. It features automatic flipping of the liquid crystal display screen and the ability to move and adjust the clamped liquid crystal display screen after it is fixed, facilitating the inspection of different positions of the liquid crystal display screen.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a clamping fixture for inspecting the appearance of a liquid crystal display screen, comprising a platform, a fixed frame fixed to the rear side of the upper end of the platform, a telescopic cylinder installed on the upper end of the fixed frame, a detection head provided at the output end of the telescopic cylinder, and a clamping assembly provided on the upper side of the platform;

[0007] The clamping assembly includes a base plate, vertical plates, a rotating shaft, an electric push rod, a folding plate, a screw, and a stop plate. The base plate is located on the upper side of the platform, and vertical plates are fixed on both sides of the upper part of the base plate. An electric push rod is installed on the upper side of one end of one vertical plate, and a rotating shaft is rotatably connected to the corresponding position of the electric push rod in the other vertical plate. A folding plate is provided at one end of the rotating shaft and the output end of the electric push rod. A screw is threaded to the upper part of the folding plate, and a stop plate is rotatably connected to the lower end of the screw.

[0008] Preferably, the clamping assembly further includes a turbine, a fixing plate, a motor, and a worm gear. The turbine is fixed at the end of the rotating shaft away from the folding plate. Two fixing plates are fixed at the position corresponding to the turbine at one end of one side of the vertical plate. A motor is installed at one end of the front fixing plate, and a worm gear is provided at the output end of the motor.

[0009] Preferably, one end of the abutment is in close contact with the side of the folding plate, a knob is fixed to the upper end of the screw, and a bearing rotating seat is provided between the screw and the abutment.

[0010] Preferably, when the folding plate rotates, the two ends of the folding plate are offset from the base plate, one folding plate is fixedly connected to the rotating shaft, and the other folding plate is connected to the output end of the electric push rod through damping rotation.

[0011] Preferably, the base plate and the platform are connected by an adjustment assembly;

[0012] The adjustment assembly includes a rectangular box, a slide groove, a second motor, a first lead screw, a first slider, a third motor, a second lead screw, and a second slider. The slide groove is located on the front side of the upper end of the platform. The second motor is installed at the position corresponding to the slide groove at one end of the platform. The first lead screw is located at the output end of the second motor. The first slider is threadedly connected to the surface of the first lead screw. The rectangular box is fixed to the upper end of the first slider. The third motor is installed at the front end of the rectangular box. The second lead screw is located at the output end of the third motor. The second slider is threadedly connected to the surface of the second lead screw at the position corresponding to the position of the base plate.

[0013] Preferably, one side of the slider is in close contact with the inner wall of the groove, and the other side of the slider is in close contact with the inner wall of the rectangular box. The base plate and the second slider, as well as the rectangular box and the first slider, are welded together by pressure welding.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, by setting up a clamping assembly, places one end of the LCD screen to be tested into a folding plate. Then, an electric push rod is activated to move another folding plate, allowing the other end of the LCD screen to enter into another folding plate. Tightening a screw drives a stop plate to move within the folding plate. The stop plate, in conjunction with the folding plate, clamps and fixes both ends of the LCD screen. After testing one side of the LCD screen, a motor is activated to drive a worm gear to rotate. The rotation of the worm gear drives a rotating shaft to rotate within a vertical plate via a worm wheel. The rotation of the rotating shaft drives the folding plate to rotate, which in turn drives the LCD screen to rotate, thereby achieving the flipping of the LCD screen. By setting up the clamping assembly, the LCD screen can be automatically flipped after being clamped and fixed, improving the practicality of the device.

[0016] 2. This utility model, by setting an adjustment component, enables motor two to drive lead screw one to rotate. The rotation of lead screw one can drive slider one to move laterally in the slide groove of the platform. The movement of slider one can drive the base plate to move. The movement of the base plate can drive the clamped LCD screen to move laterally. Motor three can drive lead screw two to rotate. The rotation of lead screw two can drive slider two to move in the rectangular box. The movement of slider two can drive the base plate to move. The movement of the base plate can drive the clamped LCD screen to move longitudinally. By setting an adjustment component, the movement and adjustment of the clamped LCD screen can be made, which facilitates the detection head to detect different positions of the LCD screen. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a rear-view perspective view of the present invention;

[0019] Figure 3 This is a perspective view of the clamping component of this utility model;

[0020] Figure 4 This is a sectional perspective view of the rectangular box and platform of this utility model;

[0021] In the diagram: 1. Platform; 2. Clamping assembly; 21. Base plate; 22. Vertical plate; 23. Rotating shaft; 24. Electric push rod; 25. Folding plate; 26. Turbine; 27. Fixing plate; 28. Motor 1; 29. ​​Worm gear; 210. Screw; 211. Support plate; 3. Adjustment assembly; 31. Rectangular box; 32. Slide groove; 33. Motor 2; 34. Lead screw 1; 35. Slider 1; 36. Motor 3; 37. Lead screw 2; 38. Slider 2; 4. Fixing frame; 5. Telescopic cylinder; 6. Detection head. 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. Example

[0023] Please see Figure 1-4 The present invention provides the following technical solution: a clamping fixture for appearance inspection of liquid crystal display screen, including a platform 1, a fixing frame 4 fixed on the rear side of the upper end of the platform 1, a telescopic cylinder 5 installed on the upper end of the fixing frame 4, a detection head 6 provided at the output end of the telescopic cylinder 5, and a clamping component 2 provided on the upper side of the platform 1.

[0024] The clamping assembly 2 includes a base plate 21, a vertical plate 22, a rotating shaft 23, an electric push rod 24, a folding plate 25, a screw 210, and a stop plate 211. The platform 1 is provided with a base plate 21 on the upper side. The upper sides of the base plate 21 are fixed with vertical plates 22. An electric push rod 24 is installed on the upper side of one end of one vertical plate 22. The rotating shaft 23 is rotatably connected to the other vertical plate 22 at the position corresponding to the electric push rod 24. A folding plate 25 is provided at one end of the rotating shaft 23 and the output end of the electric push rod 24. The upper end of the folding plate 25 is threadedly connected to the screw 210, and the lower end of the screw 210 is rotatably connected to the stop plate 211.

[0025] Specifically, the clamping assembly 2 also includes a turbine 26, a fixing plate 27, a motor 28, and a worm gear 29. The turbine 26 is fixed at the end of the rotating shaft 23 away from the folding plate 25. Two fixing plates 27 are fixed at one end of the vertical plate 22 on one side, corresponding to the position of the turbine 26. The motor 28 is installed at one end of the front fixing plate 27, and the worm gear 29 is provided at the output end of the motor 28.

[0026] By adopting the above technical solution, one end of the LCD screen to be tested is placed in a folding plate 25. Then, the electric push rod 24 is activated to push another folding plate 25 to move, so that the other end of the LCD screen enters another folding plate 25. The screw 210 is turned to drive the abutment plate 211 to move in the folding plate 25. The abutment plate 211, together with the folding plate 25, clamps and fixes both ends of the LCD screen. After testing one side of the LCD screen, the motor 28 is activated to drive the worm gear 29 to rotate. The rotation of the worm gear 29 can drive the rotating shaft 23 to rotate in the vertical plate 22 through the turbine 26. The rotation of the rotating shaft 23 drives the folding plate 25 to rotate, and the rotation of the folding plate 25 drives the LCD screen to rotate, thereby realizing the flipping of the LCD screen. By setting the clamping component 2, the LCD screen can be automatically flipped after being clamped and fixed, eliminating the need for manual flipping, reducing the workload of manual labor, and improving the practicality of the device.

[0027] Specifically, one end of the abutment 211 is in close contact with the side of the folding plate 25, a knob is fixed at the upper end of the screw 210, and a bearing rotating seat is provided between the screw 210 and the abutment 211.

[0028] By adopting the above technical solution, one end of the abutment 211 is in close contact with the side of the folding plate 25, which limits the position of the abutment 211 and prevents the abutment 211 from rotating with the screw 210. Rotating the screw 210 can push the abutment 211 to move. A knob is provided to facilitate the rotation of the screw 210.

[0029] Specifically, when the folding plate 25 rotates, the two ends of the folding plate 25 are offset from the base plate 21. One folding plate 25 is fixedly connected to the rotating shaft 23, and the other folding plate 25 is connected to the output end of the electric push rod 24 through damping rotation.

[0030] By adopting the above technical solution, the folding plate 25 is prevented from rotating and hitting the bottom plate 21. The rotation of the rotating shaft 23 can drive one folding plate 25 to rotate, while the other folding plate 25 can rotate at the output end of the electric push rod 24.

[0031] In this embodiment, when using the clamping fixture for inspecting the appearance of the LCD screen, the device is installed in a suitable position. The telescopic cylinder 5 can push the inspection head 6 to rise and fall to inspect the LCD screen. By setting the clamping component 2, one end of the LCD screen to be inspected is placed into a folding plate 25. Then, the electric push rod 24 is turned to push another folding plate 25 to move, so that the other end of the LCD screen enters another folding plate 25. The screw 210 is turned to drive the abutment plate 211 to move in the folding plate 25. The abutment plate 211 cooperates with the folding plate 25 to clamp and fix both ends of the LCD screen. After inspecting one side of the LCD screen, the motor 28 is turned to drive the worm gear 29 to rotate. The rotation of the worm gear 29 can drive the rotating shaft 23 to rotate in the vertical plate 22 through the turbine 26. The rotation of the rotating shaft 23 drives the folding plate 25 to rotate, and the rotation of the folding plate 25 drives the LCD screen to rotate, thereby realizing the flipping of the LCD screen. By setting the clamping component 2, the LCD screen can be automatically flipped after being clamped and fixed, eliminating the need for manual flipping, reducing the workload of manual labor, and improving the practicality of the device. Example

[0032] The difference between this embodiment and embodiment 1 is that the base plate 21 and the platform 1 are connected by an adjustment component 3;

[0033] The adjustment assembly 3 includes a rectangular box 31, a slide 32, a second motor 33, a first lead screw 34, a first slider 35, a third motor 36, a second lead screw 37, and a second slider 38. The slide 32 is provided on the front side of the upper end of the platform 1. The second motor 33 is installed at one end of the platform 1 at a position corresponding to the slide 32. The output end of the second motor 33 is provided with a first lead screw 34. The surface of the first lead screw 34 is threadedly connected to the first slider 35. The rectangular box 31 is fixed to the upper end of the first slider 35. The third motor 36 is installed at the front end of the rectangular box 31. The output end of the third motor 36 is provided with a second lead screw 37. The surface of the second lead screw 37 is threadedly connected to the second slider 38 at a position corresponding to the bottom plate 21.

[0034] By adopting the above technical solution, the second motor 33 drives the first lead screw 34 to rotate. The rotation of the first lead screw 34 can drive the first slider 35 to move laterally in the slide groove 32 of the platform 1. The movement of the first slider 35 can drive the base plate 21 to move. The movement of the base plate 21 can drive the clamped LCD screen to move laterally. The third motor 36 drives the second lead screw 37 to rotate. The rotation of the second lead screw 37 can drive the second slider 38 to move in the rectangular box 31. The movement of the second slider 38 can drive the base plate 21 to move. The movement of the base plate 21 can drive the clamped LCD screen to move longitudinally. By setting the adjustment component 3, the movement and adjustment of the clamped LCD screen can be made, which facilitates the detection head 6 to perform detection work on different positions of the LCD screen.

[0035] Specifically, the side of slider 35 is in close contact with the inner wall of the groove 32, and the side of slider 38 is in close contact with the inner wall of the rectangular box 31. The base plate 21 is in close contact with slider 38, and the rectangular box 31 is in close contact with slider 35 by pressure welding.

[0036] By adopting the above technical solution, the sliding of slider 1 35 and slider 2 38 in the slide groove 32 and rectangular box 31 is more stable, and the pressure welding makes the base plate 21 and slider 2 38 and the rectangular box 31 and slider 1 35 more secure.

[0037] In this embodiment, by setting the adjustment component 3, the second motor 33 is turned on to drive the first lead screw 34 to rotate. The rotation of the first lead screw 34 can drive the first slider 35 to move laterally in the slide groove 32 of the platform 1. The movement of the first slider 35 can drive the base plate 21 to move. The movement of the base plate 21 can drive the clamped LCD screen to move laterally. The third motor 36 is turned on to drive the second lead screw 37 to rotate. The rotation of the second lead screw 37 can drive the second slider 38 to move in the rectangular box 31. The movement of the second slider 38 can drive the base plate 21 to move. The movement of the base plate 21 can drive the clamped LCD screen to move longitudinally. By setting the adjustment component 3, the movement and adjustment of the clamped LCD screen can be made, which facilitates the detection head 6 to perform detection work on different positions of the LCD screen.

[0038] In this utility model, the motor-28 is a previously disclosed technology, and the selected model is Z60-55ZY.

[0039] In this utility model, the electric push rod 24 is a previously disclosed technology, and the selected model is FTG50.

[0040] In this utility model, motor 2 (33) and motor 3 (36) are existing publicly disclosed technologies, and the selected model is 5IK120GN-CF.

[0041] The structure and working principle of the platform 1, the fixing frame 4, the telescopic cylinder 5 and the detection head 6 in this utility model have been disclosed in a detection platform with clamping fixtures disclosed in Chinese patent application No. 2023214952033. Its working principle is that the telescopic cylinder 5 can push the detection head 6 to rise and fall to perform detection work on the liquid crystal display screen.

[0042] The working principle and usage process of this utility model: When using the clamping fixture for LCD screen appearance inspection, the device is installed in a suitable position. The telescopic cylinder 5 can push the inspection head 6 to rise and fall to inspect the LCD screen. By setting the clamping component 2, one end of the LCD screen to be inspected is placed into a folding plate 25. Then, the electric push rod 24 is turned to push another folding plate 25 to move, so that the other end of the LCD screen enters another folding plate 25. The screw 210 is turned to drive the abutment plate 211 to move in the folding plate 25. The abutment plate 211 cooperates with the folding plate 25 to clamp and fix both ends of the LCD screen. After inspecting one side of the LCD screen, the motor 28 is turned to drive the worm gear 29 to rotate. The rotation of the worm gear 29 can drive the rotating shaft 23 to rotate in the vertical plate 22 through the worm 26. The rotation of the rotating shaft 23 drives the folding plate 25 to rotate, and the rotation of the folding plate 25 drives the LCD screen to rotate, thereby realizing the LCD screen inspection. The display screen can be automatically flipped after being clamped and fixed by the clamping component 2, eliminating the need for manual flipping, reducing labor workload, and improving the practicality of the device. By setting the adjustment component 3, the second motor 33 drives the first lead screw 34 to rotate. The rotation of the first lead screw 34 drives the first slider 35 to move laterally in the slide groove 32 of the platform 1. The movement of the first slider 35 drives the base plate 21 to move. The movement of the base plate 21 drives the clamped display screen to move laterally. The third motor 36 drives the second lead screw 37 to rotate. The rotation of the second lead screw 37 drives the second slider 38 to move in the rectangular box 31. The movement of the second slider 38 drives the base plate 21 to move. The movement of the base plate 21 drives the clamped display screen to move longitudinally. The adjustment component 3 can be used to move and adjust the clamped display screen, which is convenient for the detection head 6 to detect different positions of the display screen.

[0043] 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. A clamping fixture for inspecting the appearance of a liquid crystal display screen, comprising a platform (1), wherein a fixing frame (4) is fixed to the rear side of the upper end of the platform (1), a telescopic cylinder (5) is installed on the upper end of the fixing frame (4), and an inspection head (6) is provided at the output end of the telescopic cylinder (5), characterized in that: The platform (1) is equipped with a clamping component (2) on its upper side; The clamping assembly (2) includes a base plate (21), a vertical plate (22), a rotating shaft (23), an electric push rod (24), a folding plate (25), a screw (210), and a stop plate (211). The platform (1) is provided with a base plate (21) on the upper side. The upper sides of the base plate (21) are fixed with vertical plates (22). An electric push rod (24) is installed on the upper side of one end of one vertical plate (22). A rotating shaft (23) is rotatably connected to the position of the electric push rod (24) in the other vertical plate (22). A folding plate (25) is provided at one end of the rotating shaft (23) and the output end of the electric push rod (24). A screw (210) is threadedly connected to the upper end of the folding plate (25). A stop plate (211) is rotatably connected to the lower end of the screw (210).

2. The clamping fixture for inspecting the appearance of a liquid crystal display screen according to claim 1, characterized in that: The clamping assembly (2) also includes a turbine (26), a fixing plate (27), a motor (28), and a worm gear (29). The turbine (26) is fixed at the end of the rotating shaft (23) away from the folding plate (25). Two fixing plates (27) are fixed at the position corresponding to the turbine (26) at one end of the vertical plate (22) on one side. A motor (28) is installed at one end of the front fixing plate (27), and a worm gear (29) is provided at the output end of the motor (28).

3. The clamping fixture for inspecting the appearance of a liquid crystal display screen according to claim 2, characterized in that: One end of the abutment (211) is in close contact with the side of the folding plate (25), a knob is fixed at the upper end of the screw (210), and a bearing rotating seat is provided between the screw (210) and the abutment (211).

4. The clamping fixture for inspecting the appearance of a liquid crystal display screen according to claim 2, characterized in that: When the folding plate (25) rotates, the two ends of the folding plate (25) are offset from the bottom plate (21). One folding plate (25) is fixedly connected to the rotating shaft (23), and the other folding plate (25) is connected to the output end of the electric push rod (24) through damping rotation.

5. The clamping fixture for inspecting the appearance of a liquid crystal display screen according to claim 1, characterized in that: The base plate (21) and the platform (1) are connected by an adjustment component (3); The adjustment component (3) includes a rectangular box (31), a slide groove (32), a second motor (33), a first lead screw (34), a first slider (35), a third motor (36), a second lead screw (37), and a second slider (38). The upper front side of the platform (1) is provided with a slide groove (32). A second motor (33) is installed at one end of the platform (1) at a position corresponding to the slide groove (32). A first lead screw (34) is provided at the output end of the second motor (33). A first slider (35) is threadedly connected to the surface of the first lead screw (34). A rectangular box (31) is fixed at the upper end of the first slider (35). A third motor (36) is installed at the front end of the rectangular box (31). A second lead screw (37) is provided at the output end of the third motor (36). A second slider (38) is threadedly connected to the surface of the second lead screw (37) at a position corresponding to the bottom plate (21).

6. The clamping fixture for inspecting the appearance of a liquid crystal display screen according to claim 5, characterized in that: The sides of slider one (35) and the inner wall of the groove (32) are closely attached, as are the sides of slider two (38) and the inner wall of the rectangular box (31). The base plate (21) and slider two (38) and the rectangular box (31) and slider one (35) are welded by pressure welding.

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