Display screen detection device capable of preventing screen from being clamped and abraded

Abstract

The utility model relates to a display screen detection device capable of preventing a screen from being worn by clamping, which comprises a detection table, the top of the detection table is fixedly connected with a first U-shaped plate, the top of the first U-shaped plate is slidably connected with a placement box, an X-axis displacement assembly is arranged in the first U-shaped plate, and a first clamping plate and a second clamping plate are slidably connected between the inner walls of the placement box. A clamping assembly is arranged on one side of the containing box, the other side of the containing box is in threaded connection with a threaded rod, one end of the threaded rod extends into the containing box and is rotationally connected with a displacement plate, and the two sides of the displacement plate are slidably connected with the inner wall of the containing box. The utility model aims to solve the problems that the moving distances of clamping blocks are different when the widths of the clamping blocks are different and the widths of the clamping blocks are small or large, the pressing degree of a spring is weak or strong, the display screen is unstable to clamp due to weak pressing, the display screen is easy to press when the pressing degree of the spring is strong, the display screen is further damaged, the tension of the spring cannot be adjusted, and the service life of the display screen is prolonged. And actual use is not facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of display screen detection, in particular to a display screen detection device for preventing a screen from being clamped and worn. Background Art

[0002] During the production process of LED display screens, due to factors such as display substrate heating, etching parameters, glass substrate residues and equipment errors, it is inevitable that abnormal pixels, i.e. dark spots, will appear in the display substrate. Therefore, in order to ensure the quality of the display screen, it is necessary to perform dark spot detection on the display screen after production is completed to determine whether there are dark spots in the display screen.

[0003] After searching, a Chinese patent discloses a display screen detection device, and its authorization announcement number is (CN217767795U), which includes a work table, a moving mechanism, an observation mechanism, a power box and a control panel. The moving mechanism is located on one side of the work table, and the moving mechanism is provided with a first screw slide, a second screw slide, a third screw slide and a clamping table from bottom to top. Two limit slides are symmetrically arranged on the clamping table, and the two limit slides are both slidably connected with the symmetrically arranged clamping blocks through limit slides. The two ends of the limit slide are located between the limit slide and the clamping block and are provided with springs, and the two ends of the limit slide are provided with blocks.

[0004] This patented technology uses a spring to push two clamping blocks closer to each other when clamping the display screen, thereby clamping the display screen, wherein the spring is sleeved on the outside of the limit slide bar, and when the clamping block is moved, the spring is compressed. The spring becomes tighter and tighter during the compression process, and the corresponding clamping is more stable. However, for different specifications, that is, different widths, the distances moved by the clamping blocks are different. When the width is smaller or larger, the degree of spring compression is weaker or stronger. A weaker degree causes unstable clamping of the display screen, and a stronger degree of spring compression easily compresses the display screen, further causing damage, making it impossible to adjust the tension of the spring, which is not conducive to actual use. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a display screen detection device for preventing the screen from being clamped and worn.

[0006] The technical solution of the utility model is as follows: a display screen detection device for preventing clamping and wear of the screen comprises a detection platform, a first U-shaped plate is fixedly connected to the top of the detection platform, a placement box is slidably connected to the top of the first U-shaped plate, an X-axis displacement component is arranged inside the first U-shaped plate, a first clamping plate and a second clamping plate are slidably connected between the inner walls of the placement box, a clamping component is arranged on one side of the placement box, a threaded rod is threadedly connected to the other side of the placement box, one end of the threaded rod extends to the interior of the placement box and is rotatably connected to the displacement plate, both sides of the displacement plate are slidably connected to the inner wall of the placement box, two springs are fixedly connected between the displacement plate and the second clamping plate, both sides of the placement box are provided with sliding grooves, the interior of the sliding grooves are slidably connected with sliding columns, one end of the sliding column is fixedly connected to one side of the second clamping plate, a YZ-axis displacement component is arranged on the top of the detection platform and on one side of the first U-shaped plate, and a magnifying glass is arranged on the outside of the YZ-axis displacement component.

[0007] As a preferred embodiment, the X-axis displacement assembly includes a first screw rod rotatably connected between the inner walls of a first U-shaped plate, a follower plate is threadedly connected to the outer side of the first screw rod, a first motor is fixedly mounted on one side of the first U-shaped plate, and an output shaft of the first motor is fixedly connected to one end of the first screw rod.

[0008] As a preferred implementation, two ends of one side of the follower plate are rotatably connected with rollers, and the outer sides of the rollers are in contact with the bottom of the first U-shaped plate.

[0009] As a preferred embodiment, the clamping assembly includes an electric telescopic rod, which is fixedly installed on one side of the placement box, and the movable rod of the electric telescopic rod extends into the interior of the placement box and is fixedly connected to the first clamping plate, and one side of the placement box and both sides of the electric telescopic rod are slidably connected with a guide rod, and one end of the guide rod is fixedly connected to one side of the first clamping plate.

[0010] As a preferred embodiment, the YZ-axis displacement assembly includes a second U-shaped plate, which is fixedly connected to the top of the detection platform, the inner side of the second U-shaped plate is rotatably connected to a second screw rod, the outer side of the second screw rod is threadedly connected to a first displacement block, one side of the first displacement block is slidingly connected to the inner side of the second U-shaped plate, a second motor is fixedly installed on the top of the second U-shaped plate, and the output shaft of the second motor is fixedly connected to one end of the second screw rod.

[0011] As a preferred embodiment, the YZ-axis displacement assembly also includes a third U-shaped plate, which is fixedly connected to one side of the first displacement block, the third U-shaped plate is internally rotatably connected to a third screw rod, the outer side of the third screw rod is threadedly connected to a second displacement block, the top of the second displacement block is slidingly connected to the inner side of the third U-shaped plate, one side of the second displacement block is fixedly connected to the outer side of the magnifying glass, a third motor is fixedly installed on one side of the third U-shaped plate, and the output shaft of the third motor is fixedly connected to one end of the third screw rod.

[0012] As a preferred implementation, a rubber strip is provided on one side of the second clamping plate and the first clamping plate that are close to each other, and L-shaped brackets are fixedly connected to the four corners of the bottom of the testing platform.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. Use the slide posts on both sides of the second clamping plate to slide inside the slide slot, but the slide posts are now located at one end of the slide slot close to the first clamping plate, so that the second clamping plate cannot move closer to the first clamping plate, but can only move closer to the displacement plate. As the displacement plate continues to move closer to the second clamping plate, the spring is compressed, so that the spring is pre-tightened. The distance that the clamping assembly pushes the first clamping plate to move is fixed, so the pre-tightening degree of the spring determines the degree of clamping and fixing of the display screen.

[0015] 2. After the spring is pre-tightened and debugged, you can push the second clamping plate by hand to judge the firmness of the clamping. In this way, you can debug the spring according to the different widths of the display screen, so that after the clamping assembly pushes the first clamping plate to the maximum position, the spring can be sufficiently compressed and provide sufficient reaction force to clamp and fix the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of a display screen detection device for preventing the screen from being clamped and worn is provided for the utility model;

[0017] Figure 2 The utility model provides a schematic diagram of the internal structure of the inspection box 7 of the display screen detection device for preventing the screen from being clamped and worn;

[0018] Figure 3 The utility model provides a schematic structural diagram of an X-axis displacement component of a display screen detection device for preventing a clamped and worn screen;

[0019] Figure 4 The utility model provides a display screen detection device for preventing clamping and wearing of the screen Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Legend: 1. Inspection table; 2. First U-shaped plate; 3. Follower plate; 4. Roller; 5. First motor; 6. First screw rod; 7. Placement box; 8. Threaded rod; 9. Second clamping plate; 10. Rubber strip; 11. Slide groove; 12. Slide column; 13. Displacement plate; 14. Third motor; 15. Spring; 16. First clamping plate; 17. Guide rod; 18. Electric telescopic rod; 19. Second U-shaped plate; 20. First displacement block; 21. Second screw rod; 22. Second motor; 23. Third U-shaped plate; 24. Third screw rod; 25. Magnifying glass; 26. L-shaped bracket; 27. Second displacement block. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: it includes a detection table 1, a first U-shaped plate 2 is fixedly connected to the top of the detection table 1, a placement box 7 is slidably connected to the top of the first U-shaped plate 2, an X-axis displacement component is arranged inside the first U-shaped plate 2, a first clamping plate 16 and a second clamping plate 9 are slidably connected between the inner walls of the placement box 7, a clamping component is arranged on one side of the placement box 7, a threaded rod 8 is threadedly connected to the other side of the placement box 7, one end of the threaded rod 8 extends to the interior of the placement box 7 and is rotatably connected with a displacement plate 13, both sides of the displacement plate 13 are slidably connected to the inner wall of the placement box 7, two springs 15 are fixedly connected between the displacement plate 13 and the second clamping plate 9, both sides of the placement box 7 are provided with sliding grooves 11, the interior of the sliding grooves 11 are slidably connected with sliding columns 12, one end of the sliding column 12 is fixedly connected to one side of the second clamping plate 9, a YZ-axis displacement component is arranged on the top of the detection table 1 and on one side of the first U-shaped plate 2, and a magnifying glass 25 is arranged on the outside of the YZ-axis displacement component.

[0024] Through the above embodiment, when the display screen is tested, the display screen is placed inside the placement box 7, and then the spring 15 is adjusted according to the width of the display screen, and the threaded rod 8 is rotated. At this time, the slide posts 12 on both sides of the second clamping plate 9 slide inside the slide groove 11, but the slide post 12 is now located at one end of the slide groove 11 close to the first clamping plate 16, so that the second clamping plate 9 cannot move to the side close to the first clamping plate 16, and can only move to the side close to the displacement plate 13. As the displacement plate 13 continues to approach the second clamping plate 9, the spring 15 is compressed, so that the spring 15 is pre-pressed, and then the clamping assembly is used to drive the first clamping plate 16 to move, thereby pushing the display screen to the second clamping plate. The holding plate 9 approaches, and then the first clamping plate 16 pushes the display screen to abut against the first clamping plate 16, and further compresses the spring 15. The distance that the clamping assembly pushes the first clamping plate 16 to move is fixed, so the pre-tightening degree of the spring 15 determines the degree to which the display screen is clamped and fixed; after the spring 15 is pre-tightened and debugged, the second clamping plate 9 can be pushed by hand to judge the firmness of the clamping, so that the spring 15 can be debugged according to the different widths of the display screen, so that after the clamping assembly pushes the first clamping plate 16 to the maximum position, the spring 15 can be sufficiently compressed, and at the same time provide sufficient reaction force to clamp and fix the display screen, thereby avoiding the problem of unstable clamping of the display screen.

[0025] Example 2

[0026] like Figure 1-Figure 4 As shown, the X-axis displacement assembly includes a first screw rod 6 rotatably connected between the inner walls of the first U-shaped plate 2, the outer side of the first screw rod 6 is threadedly connected to the follower plate 3, and a first motor 5 is fixedly installed on one side of the first U-shaped plate 2, and the output shaft of the first motor 5 is fixedly connected to one end of the first screw rod 6. The two ends of one side of the follower plate 3 are rotatably connected to the roller 4, and the outer side of the roller 4 abuts against the bottom of the first U-shaped plate 2. By setting the X-axis displacement assembly, after the display screen is clamped and fixed, the first motor 5 is started to drive the first screw rod 6 to rotate. Since the first screw rod 6 is threadedly connected to the follower plate 3, the placement box 7 is driven to move in the X-axis direction, and then the display screen is driven to move under the magnifying glass 25, so that black spots can be detected at different positions on the surface of the display screen. At the same time, when the follower plate 3 moves, the roller 4 rolls at the bottom of the first U-shaped plate 2, which improves the smoothness of the follower plate 3 when moving and reduces friction.

[0027] The clamping assembly includes an electric telescopic rod 18, which is fixedly mounted on one side of the placement box 7. The movable rod of the electric telescopic rod 18 extends into the interior of the placement box 7 and is fixedly connected to the first clamping plate 16. A guide rod 17 is slidably connected to one side of the placement box 7 and on both sides of the electric telescopic rod 18. One end of the guide rod 17 is fixedly connected to one side of the first clamping plate 16. By setting the clamping assembly, after placing the display screen in the placement box 7, the electric telescopic rod 18 is started, thereby pushing the first clamping plate 16 to move, and the first clamping plate 16 moves with the guide rod 17, which slides on one side of the placement box 7, and then the first clamping plate 16 is guided by the guide rod 17 to prevent displacement during the movement.

[0028] The YZ axis displacement assembly includes a second U-shaped plate 19, which is fixedly connected to the top of the detection platform 1, and the second U-shaped plate 19 is rotatably connected to the inner side of the second U-shaped plate 19, and the outer side of the second screw rod 21 is threadedly connected to the first displacement block 20, and one side of the first displacement block 20 is slidably connected to the inner side of the second U-shaped plate 19, and the top of the second U-shaped plate 19 is fixedly installed with a second motor 22, and the output shaft of the second motor 22 is fixedly connected to one end of the second screw rod 21. The YZ axis displacement assembly also includes a third U-shaped plate 23, which is fixedly connected to one side of the first displacement block 20, and the inner side of the third U-shaped plate 23 is rotatably connected to the third screw rod 24, and the outer side of the third screw rod 24 is threadedly connected to the second displacement block 27, and the top of the second displacement block 27 is slidably connected to the inner side of the third U-shaped plate 23, and one side of the second displacement block 27 is fixedly connected to the outer side of the magnifying glass 25, and one side of the third U-shaped plate 23 is fixedly installed with a third motor 14, and the output shaft of the third motor 14 is fixedly connected to one end of the third screw rod 24. After the display screen is clamped and fixed, the second motor 22 is started, so that the second screw rod 21 rotates, and then the first displacement block 20 is driven to move in the Y-axis direction, so as to adjust the height of the magnifying glass 25 and further adjust the focal length of the magnifying glass 25; after adjusting to a suitable height, the third motor 14 is started, so as to drive the third screw rod 24 to rotate, and then the second displacement block 27 is driven to move in the Z-axis direction, so as to drive the magnifying glass 25 to move, and further detect different positions on the surface of the display screen.

[0029] Among them, a rubber strip 10 is provided on the side where the second clamping plate 9 and the first clamping plate 16 are close to each other, and the four corners of the bottom of the detection platform 1 are fixedly connected with an L-shaped bracket 26. By providing the rubber strip 10, when the display screen is clamped and fixed by the first clamping plate 16 and the second clamping plate 9, the rubber strip 10 itself can be deformed, thereby playing a buffering role, and at the same time, the display screen can be prevented from being scratched and worn, thereby improving the practicality of the device.

[0030] Working principle: when testing the display screen, place the display screen inside the placement box 7, then adjust the spring 15 according to the width of the display screen, and rotate the threaded rod 8. At this time, the slide columns 12 on both sides of the second clamping plate 9 slide inside the slide groove 11, but the current position of the slide column 12 is at one end of the slide groove 11 close to the first clamping plate 16, so that the second clamping plate 9 cannot move to the side close to the first clamping plate 16, and can only move to the side close to the displacement plate 13. As the displacement plate 13 continues to approach the second clamping plate 9, the spring 15 is compressed, so that the spring 15 is pre-pressed; then the electric telescopic rod 18 is started, thereby pushing the first clamping plate 16 to move, and the first clamping plate 16 moves with it, pushing the display screen close to the second clamping plate 9, and then the first clamping plate 16 pushes The display screen is in contact with the second clamping plate 9 to clamp and fix the display screen; after the display screen is clamped and fixed, the second motor 22 is started, so that the second screw rod 21 rotates, thereby driving the first displacement block 20 to move in the Y-axis direction, thereby adjusting the height of the magnifying glass 25 and further adjusting the focal length of the magnifying glass 25; after adjusting the focal length, the first motor 5 is started to drive the first screw rod 6 to rotate. Since the first screw rod 6 is threadedly connected to the follower plate 3, the placement box 7 is driven to move in the X-axis direction, thereby driving the display screen to move under the magnifying glass 25; then the third motor 14 is started, thereby driving the third screw rod 24 to rotate, thereby driving the second displacement block 27 to move in the Z-axis direction, thereby driving the magnifying glass 25 to move, and further different positions on the surface of the display screen can be detected.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A display screen detection device for preventing the screen from being clamped and worn, comprising a detection platform (1), characterized in that: The top of the detection table (1) is fixedly connected to a first U-shaped plate (2), the top of the first U-shaped plate (2) is slidably connected to a placement box (7), an X-axis displacement assembly is arranged inside the first U-shaped plate (2), a first clamping plate (16) and a second clamping plate (9) are slidably connected between the inner walls of the placement box (7), a clamping assembly is arranged on one side of the placement box (7), a threaded rod (8) is threadedly connected to the other side of the placement box (7), one end of the threaded rod (8) extends to the inside of the placement box (7) and is rotatably connected to a displacement plate (13), the Both sides of the displacement plate (13) are slidably connected to the inner wall of the placement box (7); two springs (15) are fixedly connected between the displacement plate (13) and the second clamping plate (9); both sides of the placement box (7) are provided with sliding grooves (11); the interior of the sliding grooves (11) is slidably connected with sliding columns (12); one end of the sliding column (12) is fixedly connected to one side of the second clamping plate (9); a YZ-axis displacement component is arranged at the top of the detection platform (1) and on one side of the first U-shaped plate (2); a magnifying glass (25) is arranged on the outer side of the YZ-axis displacement component.

2. The display screen detection device for preventing the screen from being clamped and worn according to claim 1, characterized in that: The X-axis displacement assembly comprises a first screw rod (6) rotatably connected between the inner walls of a first U-shaped plate (2), a follower plate (3) being threadedly connected to the outer side of the first screw rod (6), a first motor (5) being fixedly mounted on one side of the first U-shaped plate (2), and an output shaft of the first motor (5) being fixedly connected to one end of the first screw rod (6).

3. A display screen detection device for preventing screen from being clamped and worn according to claim 2, characterized in that: The two ends of one side of the follower plate (3) are rotatably connected to rollers (4), and the outer sides of the rollers (4) are in contact with the bottom of the first U-shaped plate (2).

4. The display screen detection device for preventing the screen from being clamped and worn according to claim 1, characterized in that: The clamping assembly comprises an electric telescopic rod (18), the electric telescopic rod (18) is fixedly mounted on one side of the placement box (7), a movable rod of the electric telescopic rod (18) extends into the interior of the placement box (7) and is fixedly connected to the first clamping plate (16), one side of the placement box (7) and both sides of the electric telescopic rod (18) are slidably connected with a guide rod (17), and one end of the guide rod (17) is fixedly connected to one side of the first clamping plate (16).

5. The display screen detection device for preventing screen from being clamped and worn according to claim 1, characterized in that: The YZ-axis displacement assembly comprises a second U-shaped plate (19), the second U-shaped plate (19) is fixedly connected to the top of the detection platform (1), the inner side of the second U-shaped plate (19) is rotatably connected to a second screw rod (21), the outer side of the second screw rod (21) is threadedly connected to a first displacement block (20), one side of the first displacement block (20) is slidably connected to the inner side of the second U-shaped plate (19), a second motor (22) is fixedly installed on the top of the second U-shaped plate (19), and the output shaft of the second motor (22) is fixedly connected to one end of the second screw rod (21).

6. The display screen detection device for preventing the screen from being clamped and worn according to claim 5, characterized in that: The YZ-axis displacement assembly further comprises a third U-shaped plate (23), wherein the third U-shaped plate (23) is fixedly connected to one side of the first displacement block (20), the third U-shaped plate (23) is rotatably connected to a third screw rod (24) inside, the third screw rod (24) is threadedly connected to a second displacement block (27) on the outside, the top of the second displacement block (27) is slidably connected to the inside of the third U-shaped plate (23), one side of the second displacement block (27) is fixedly connected to the outside of the magnifying glass (25), a third motor (14) is fixedly mounted on one side of the third U-shaped plate (23), and the output shaft of the third motor (14) is fixedly connected to one end of the third screw rod (24).

7. The display screen detection device for preventing screen from being clamped and worn according to claim 1, characterized in that: A rubber strip (10) is provided on the side where the second clamping plate (9) and the first clamping plate (16) are close to each other, and L-shaped brackets (26) are fixedly connected to the four corners of the bottom of the detection platform (1).

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