A liquid crystal display surface defect detection device

Abstract

The application provides a liquid crystal display screen surface defect detection device and relates to the field of liquid crystal display screen surface defect detection. The application comprises a shell, the inner lower surface of the shell is fixedly connected with a base, the upper surface of the base is fixedly connected with a chain wheel conveyor belt, the inner surface of the base is provided with a submission device, the upper surface of the submission device is installed with a display screen, and the upper surface of the base is fixedly connected with a fixed support. The display screen is moved to the position of the shooting device through the submission device and is limited through the moving device, the display screen is not taken down for detection for multiple times, the possibility of damage of the display screen is reduced, the display screen is shot from multiple directions through the cooperation of the rotating device, the moving device, the shooting device and the submission device, more observation angles are provided, the torsional spring is arranged, the display screen can return to the original position after detection, and the situation that the detection efficiency is affected due to the failure to align the position on the chain wheel conveyor belt is reduced.

Description

Technical Field

[0001] This invention relates to the field of surface defect detection for liquid crystal displays, specifically to a surface defect detection device for liquid crystal displays. Background Technology

[0002] Liquid crystal displays (LCDs) are a widely used display technology, primarily used in the screens of televisions, computer monitors, mobile phones, and other electronic devices. Their working principle is based on the optical properties of liquid crystal materials, which can change the direction of light propagation under the influence of an electric field, thereby adjusting the displayed image. Some LCDs utilize 2D materials (such as graphene and transition metal dichalcogenides). The application of these new materials in LCD screens mainly improves performance, enhances conductivity, increases touch sensitivity, and improves the overall quality of the display. During testing, a high-resolution optical microscope is used to observe the surface of the LCD screen, directly detecting the thin-layer structure of the 2D materials and their distribution on the display. By using light of different wavelengths, the surface quality of the material can be examined, and the presence of particles, cracks, or other defects can be identified.

[0003] Existing display screen inspection methods involve transporting the display screen to the inspection location for inspection and then transporting it away. For example, the invention patent application with publication number CN119334955A discloses a liquid crystal display screen surface defect inspection device. This method involves transporting the display screen to the position of the processing table assembly, fixing the display screen, and then inspecting it. This inspection method requires the display screen to be clamped multiple times, which can easily damage the display screen during the clamping process. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a surface defect detection device for liquid crystal displays, which solves the problem of easy damage to the display screen after repeated clamping.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a liquid crystal display screen surface defect detection device, comprising a housing, a base fixedly connected to the lower inner surface of the housing, a sprocket conveyor belt fixedly connected to the upper surface of the base, a delivery device provided on the inner surface of the base, a display screen mounted on the upper surface of the delivery device, a fixed bracket fixedly connected to the upper surface of the base, a rotating device provided on the upper surface of the fixed bracket, a moving device provided between the fixed brackets, and an imaging device provided on the upper surface of the rotating device; The rotating device includes an internal gear ring, a first gear, and a first motor. The internal gear ring is rotatably connected to the inner surface of the fixed bracket, the first motor is fixedly connected to the inner surface of the fixed bracket, the lower end of the first gear is fixedly connected to the output end of the first motor, and the inner ring surface of the internal gear ring meshes with the first gear. The moving device includes an arc-shaped moving toothed plate, a limiting plug, a second gear, a second motor, a first lead screw, a third motor, and a moving block. The third motor is fixedly connected to the inner surface of the fixed bracket. One end of the first lead screw is fixedly connected to the output end of the third motor, and the other end of the first lead screw is rotatably connected to the inner surface of the fixed bracket. The moving block is threadedly connected to the side surface of the first lead screw. The second motor is fixedly connected to the inner surface of the moving block. The lower end of the second gear is fixedly connected to the output end of the second motor. The second gear meshes with the outer ring of the arc-shaped moving toothed plate. The arc-shaped moving toothed plate is movably connected to the inner surface of the moving block. Multiple limiting plugs are provided and distributed on the inner ring surface of the arc-shaped moving toothed plate. The shooting device includes an arc-shaped moving rod, a first limiting block, a second limiting block, an electric roller, a light-emitting plate, limiting pins, a support frame, and a microscope camera. The arc-shaped moving rod has multiple sections and is fixedly connected to the upper surface of an internal toothed ring. The limiting pins are respectively fixedly connected to the side surfaces of the support frame and the microscope camera. The electric roller is rotatably connected to the inner surfaces of the first and second limiting blocks. The first limiting block is fixedly connected to the right side surface of the support frame, and the second limiting block is fixedly connected to the right side surface of the microscope camera. The support frame and the microscope camera are movably connected to the inner surface of the arc-shaped moving rod through the limiting pins and the electric roller, respectively. The light-emitting plate is fixedly connected to the left side surface of the support frame.

[0006] Preferably, the inspection device includes an electric lead screw, a turntable assembly, a tilting assembly, a movable connecting block, a clamping assembly, and a receiving assembly. The electric lead screw is fixedly connected to the inner surface of the base. The turntable assembly is rotatably connected to the output end of the electric lead screw. The tilting assembly is fixedly connected to the upper surface of the turntable assembly. The movable connecting block is movably connected to the inner surface of the tilting assembly. The clamping assembly is disposed on the upper surface of the movable connecting block. A limiting block for limiting the receiving assembly is disposed on the upper surface of the chain of the sprocket conveyor belt. The receiving assembly is mounted on the upper surface of the sprocket conveyor belt through the limiting block. The display screen is mounted on the upper surface of the receiving assembly.

[0007] Preferably, the clamping assembly includes a slide rod, a spring, a clamping block, a bidirectional cam, a camshaft, a fourth gear, a fifth gear, and a fourth motor. One end of the slide rod is slidably connected to the inner surface of the movable connecting block, and the other end of the slide rod is fixedly connected to the side surface of the clamping block. The spring is sleeved on the side surface of the slide rod, and one end of the spring is fixedly connected to the side surface of the clamping block. The other end of the spring is fixedly connected to the inner surface of the movable connecting block. The clamping block is slidably connected to the inner surface of the movable connecting block. The fourth motor is fixedly connected to the inner surface of the movable connecting block. The fifth gear is fixedly connected to the output end of the fourth motor. The camshaft is rotatably connected to the inner surface of the movable connecting block. The fourth gear is fixedly connected to the side surface of the camshaft located in the middle position. The fifth gear meshes with the fourth gear. Two bidirectional cams are provided and fixedly connected to both ends of the camshaft respectively. The side of the bidirectional cam is in contact with the outer end of the clamping block extending from the side of the movable connecting block.

[0008] Preferably, the turntable assembly includes a rotating disk, a torsion spring, and a fixed rod. The lower end of the fixed rod is fixedly connected to the output end of the electric lead screw. The rotating disk is rotatably connected to the upper surface of the fixed rod. The upper end of the torsion spring is fixedly connected to the lower surface of the rotating disk, and the lower end of the torsion spring is fixedly connected to the side surface of the fixed rod.

[0009] Preferably, the tilting assembly includes a fixed connecting block, a third gear, a worm gear, a worm, and a sixth gear. The sixth gear is fixedly connected to the inner surface of the rotating disk, the worm is fixedly connected to the output end of the sixth gear, the worm gear meshes with the worm, the third gear is fixedly connected to the worm gear and rotatably connected to the inner surface of the rotating disk, the lower end of the movable connecting block is provided with an arc-shaped toothed plate, the third gear meshes with the arc-shaped toothed plate, the fixed connecting block is fixedly connected to the upper surface of the rotating disk, and the lower end of the movable connecting block is movably connected to the inner surface of the fixed connecting block.

[0010] Preferably, the receiving assembly includes a receiving block, a fixing plate, a limiting bracket, a second lead screw, and a washer. The fixing plate is fixedly connected to the front and rear ends of the receiving block. The receiving block is mounted on the limiting toothed plate on the sprocket conveyor belt via the fixing plate. The lower end of the limiting bracket is fixedly connected to the upper surface of the receiving block at its edge. The second lead screw is threadedly connected to the inner surface of the upper end of the limiting bracket. The washer is fixedly connected to the lower end of the second lead screw.

[0011] (III) Beneficial Effects This invention provides a device for detecting surface defects in a liquid crystal display screen. It has the following advantages: 1. The display screen is moved to the position of the shooting device by the set inspection device and limited by the moving device, so that the display screen does not need to be removed for inspection many times, reducing the possibility of damage to the display screen.

[0012] 2. By coordinating the rotation device, movement device, shooting device, and inspection device, the display screen can be photographed from multiple angles, providing more viewing perspectives.

[0013] 3. The torsion spring is designed to return to its original position after the test is completed, reducing the chance of misalignment with the sprocket conveyor belt and affecting the testing efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a liquid crystal display surface defect detection device proposed in this invention; Figure 2 This is a schematic diagram of the internal first structure of a liquid crystal display surface defect detection device proposed in this invention; Figure 3 This is a schematic diagram of the internal second structure of a liquid crystal display surface defect detection device proposed in this invention; Figure 4 This is a schematic diagram of the first structure of the inspection device of the liquid crystal display surface defect detection device proposed in this invention; Figure 5 This is a schematic diagram of the second structure of the inspection device of the liquid crystal display surface defect detection device proposed in this invention; Figure 6 This is a schematic diagram of the clamping component structure of a liquid crystal display surface defect detection device proposed in this invention; Figure 7 This is a schematic diagram of the tilting component structure of a liquid crystal display surface defect detection device proposed in this invention; Figure 8 This is a schematic diagram of the receiving component structure of a liquid crystal display surface defect detection device proposed in this invention; Figure 9 For the present invention Figure 8 Enlarged view of section A in the middle; Figure 10 This is a schematic diagram of the first structure of the rotating device of the liquid crystal display surface defect detection device proposed in this invention; Figure 11 This is a schematic diagram of the moving device structure of a liquid crystal display surface defect detection device proposed in this invention; Figure 12 This is a schematic diagram of the first structure of the imaging device of the liquid crystal display surface defect detection device proposed in this invention; Figure 13 This is a schematic diagram of the second structure of the imaging device of the liquid crystal display surface defect detection device proposed in this invention; Figure 14This is a schematic diagram of the third structure of the imaging device of the liquid crystal display surface defect detection device proposed in this invention; Figure 15 This is a schematic diagram of the fourth structure of the imaging device of the liquid crystal display surface defect detection device proposed in this invention.

[0015] The components include: 1. Housing; 2. Base; 3. Sprocket conveyor belt; 4. Display screen; 5. Fixed bracket; 6. Rotating device; 601. Internal gear ring; 602. First gear; 603. First motor; 7. Imaging device; 701. Arc-shaped moving rod; 702. First limiting block; 703. Second limiting block; 704. Electric roller; 705. Lighting plate; 706. Limiting pin; 707. Support frame; 708. Microscope camera; 8. Moving device; 801. Arc-shaped moving toothed plate; 802. Limiting plug; 803. Second gear; 804. Second motor; 805. First lead screw; 806. Third motor; 807. Moving block; 9. Inspection device; 901. Electric lead screw; 902. Turntable assembly; 902. 90202, Rotating disk; 90203, Torsion spring; 90203, Fixed rod; 903, Inclining assembly; 90301, Fixed connecting block; 90302, Third gear; 90303, Worm gear; 90304, Worm; 90305, Sixth gear; 904, Movable connecting block; 905, Clamping assembly; 90501, Slide rod; 90502, Spring; 90503, Clamping block; 90504, Bidirectional cam; 90505, Camshaft; 90506, Fourth gear; 90507, Fifth gear; 90508, Fourth motor; 906, Receiving assembly; 90601, Receiving block; 90602, Fixed plate; 90603, Limiting bracket; 90604, Second lead screw; 90605, Washer. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example

[0017] like Figure 1-15As shown, this embodiment of the invention provides a liquid crystal display screen surface defect detection device, including a housing 1, a base 2 fixedly connected to the lower inner surface of the housing 1, a sprocket conveyor belt 3 fixedly connected to the upper surface of the base 2, a delivery device 9 provided on the inner surface of the base 2, a display screen 4 mounted on the upper surface of the delivery device 9, a fixed bracket 5 fixedly connected to the upper surface of the base 2, a rotating device 6 provided on the upper surface of the fixed bracket 5, a moving device 8 provided between the fixed brackets 5, and an imaging device 7 provided on the upper surface of the rotating device 6. The rotating device 6 includes an internal gear ring 601, a first gear 602, and a first motor 603. The internal gear ring 601 is rotatably connected to the inner surface of the fixed bracket 5, the first motor 603 is fixedly connected to the inner surface of the fixed bracket 5, the lower end of the first gear 602 is fixedly connected to the output end of the first motor 603, and the inner ring surface of the internal gear ring 601 is meshed with the first gear 602. The moving device 8 includes an arc-shaped moving toothed plate 801, a limiting plug 802, a second gear 803, a second motor 804, a first lead screw 805, a third motor 806, and a moving block 807. The third motor 806 is fixedly connected to the inner surface of the fixed bracket 5. One end of the first lead screw 805 is fixedly connected to the output end of the third motor 806, and the other end of the first lead screw 805 is rotatably connected to the inner surface of the fixed bracket 5. The moving block 807 is threadedly connected to the side surface of the first lead screw 805. The second motor 804 is fixedly connected to the inner surface of the moving block 807. The lower end of the second gear 803 is fixedly connected to the output end of the second motor 804. The second gear 803 meshes with the outer ring of the arc-shaped moving toothed plate 801. The arc-shaped moving toothed plate 801 is movably connected to the inner surface of the moving block 807. Multiple limiting plugs 802 are provided and distributed on the inner ring surface of the arc-shaped moving toothed plate 801. The shooting device 7 includes an arc-shaped moving rod 701, a first limiting block 702, a second limiting block 703, an electric roller 704, a light-emitting plate 705, a limiting pin 706, a support frame 707, and a microscope camera 708. The arc-shaped moving rod 701 is provided with multiple rings and is fixedly connected to the upper surface of the internal gear ring 601. The limiting pins 706 are respectively fixedly connected to the side surfaces of the support frame 707 and the microscope camera 708. The electric roller 704 is rotatably connected to the inner surfaces of the first limiting block 702 and the second limiting block 703. The first limiting block 702 is fixedly connected to the right side surface of the support frame 707, and the second limiting block 703 is fixedly connected to the right side surface of the microscope camera 708. The support frame 707 and the microscope camera 708 are movably connected to the inner surface of the arc-shaped moving rod 701 through the limiting pins 706 and the electric roller 704, respectively. The light-emitting plate 705 is fixedly connected to the left side surface of the support frame 707.

[0018] The sprocket conveyor belt 3 is an existing device that uses sprockets for transmission, while the display screen 4 is a display screen for new materials added internally.

[0019] The inspection device 9 includes an electric lead screw 901, a turntable assembly 902, a tilting assembly 903, a movable connecting block 904, a clamping assembly 905, and a receiving assembly 906. The electric lead screw 901 is fixedly connected to the inner surface of the base 2. The turntable assembly 902 is rotatably connected to the output end of the electric lead screw 901. The tilting assembly 903 is fixedly connected to the upper surface of the turntable assembly 902. The movable connecting block 904 is movably connected to the inner surface of the tilting assembly 903. The clamping assembly 905 is disposed on the upper surface of the movable connecting block 904. A limiting block is provided on the upper surface of the chain of the sprocket conveyor belt 3 to limit the receiving assembly 906. The receiving assembly 906 is mounted on the upper surface of the sprocket conveyor belt 3 through the limiting block. The display screen 4 is mounted on the upper surface of the receiving assembly 906.

[0020] The electric lead screw 901 is an existing device that extends and retracts through an internal lead screw and has a limit function.

[0021] The clamping assembly 905 includes a slide rod 90501, a spring 90502, a clamping block 90503, a bidirectional cam 90504, a camshaft 90505, a fourth gear 90506, a fifth gear 90507, and a fourth motor 90508. One end of the slide rod 90501 is slidably connected to the inner surface of the movable connecting block 904, and the other end of the slide rod 90501 is fixedly connected to the side surface of the clamping block 90503. The spring 90502 is sleeved on the side surface of the slide rod 90501, one end of the spring 90502 is fixedly connected to the side surface of the clamping block 90503, and the other end of the spring 90502 is fixedly connected to the inner surface of the movable connecting block 904. The clamping block 90503 slides... The fourth motor 90508 is fixedly connected to the inner surface of the movable connecting block 904, the fifth gear 90507 is fixedly connected to the output end of the fourth motor 90508, the camshaft 90505 is rotatably connected to the inner surface of the movable connecting block 904, the fourth gear 90506 is fixedly connected to the side surface of the camshaft 90505 located in the middle position, the fifth gear 90507 is meshed with the fourth gear 90506, two bidirectional cams 90504 are provided and fixedly connected to the two ends of the camshaft 90505 respectively, and the side of the bidirectional cam 90504 is in contact with the outer end of the gripping block 90503 extending on the side of the movable connecting block 904.

[0022] The inspection device 9 has the functions of clamping, telescopic and tilting, which can perform multi-directional inspection on the display screen 4.

[0023] The turntable assembly 902 includes a rotating disk 90201, a torsion spring 90202, and a fixed rod 90203. The lower end of the fixed rod 90203 is fixedly connected to the output end of the electric lead screw 901. The rotating disk 90201 is rotatably connected to the upper surface of the fixed rod 90203. The upper end of the torsion spring 90202 is fixedly connected to the lower surface of the rotating disk 90201, and the lower end of the torsion spring 90202 is fixedly connected to the side surface of the fixed rod 90203.

[0024] The slots on both sides of the rotating disk 90201 are large enough to allow the limit plug 802 to be inserted. The torsion spring 90202 can return the rotating disk 90201 to the center after the limit is released.

[0025] The tilting component 903 includes a fixed connecting block 90301, a third gear 90302, a worm gear 90303, a worm 90304, and a sixth gear 90305. The sixth gear 90305 is fixedly connected to the inner surface of the rotating disk 90201. The worm 90304 is fixedly connected to the output end of the sixth gear 90305. The worm gear 90303 meshes with the worm 90304. The third gear 90302 is fixedly connected to the worm gear 90303 and rotatably connected to the inner surface of the rotating disk 90201. The lower end of the movable connecting block 904 is provided with an arc-shaped toothed plate. The third gear 90302 meshes with the arc-shaped toothed plate. The fixed connecting block 90301 is fixedly connected to the upper surface of the rotating disk 90201. The lower end of the movable connecting block 904 is movably connected to the inner surface of the fixed connecting block 90301.

[0026] The receiving assembly 906 includes a receiving block 90601, a fixing plate 90602, a limiting bracket 90603, a second lead screw 90604, and a washer 90605. The fixing plate 90602 is fixedly connected to the front and rear ends of the receiving block 90601. The receiving block 90601 is mounted on the limiting toothed plate on the sprocket conveyor belt 3 through the fixing plate 90602. The lower end of the limiting bracket 90603 is fixedly connected to the upper surface of the receiving block 90601 at the edge. The second lead screw 90604 is threadedly connected to the inner surface of the upper end of the limiting bracket 90603. The washer 90605 is fixedly connected to the lower end of the second lead screw 90604.

[0027] The internal setting of the receiving block 90601 and the corresponding slot of the clamping block 90503 are used to limit the position of the receiving block 90601.

[0028] Working principle: The display screen 4 is mounted on the receiving block 90601. Then, the second lead screw 90604 is rotated to move the shim 90605 downward, thereby fixing the edge of the display screen 4. Next, the receiving block 90601 is mounted on the sprocket conveyor belt 3 through the fixing plate 90602 and the limit block, and the sprocket conveyor belt 3 is started to move. After moving to the position of the inspection device 9 on the sprocket conveyor belt 3, the electric lead screw 901 is started to drive the turntable assembly 902 to move upward, and the clamping assembly 905 is driven upward through the tilting assembly 903 and the movable connecting block 904. Then, when the clamping assembly 905 moves upward to the corresponding position inside the receiving assembly 906, the fourth motor 90508 is started to drive the fifth gear 906. The rotation of 0507 drives the fourth gear 90506 to rotate. The rotation of the fourth gear 90506 drives the double-sided cam 90504 to rotate half a turn via the camshaft 90505, thereby causing the gripping block 90503 to move to both sides. Then, when the inspection device 9 moves to the position used for limiting in the receiving assembly 906, the double-sided cam 90504 rotates half a turn again. At this time, the gripping block 90503 moves back to its original position by the elastic force of the spring 90502, thereby clamping and fixing the corresponding position inside the receiving assembly 906. Then, the gripping assembly 905 continues to move upward, moving the lower part of the turntable assembly 902 to the position above the limit plug 802. Then, the third motor 806 is started to drive the first lead screw 805 to rotate. The rotation drives the moving block 807 to move towards the center, inserting the limit plug 802 into the corresponding slot inside the rotating disk 90201. Then, the sixth gear 90305 is activated, driving the worm gear 90304 to rotate. The rotation of the worm gear 90304 drives the worm wheel 90303 to rotate, thereby driving the third gear 90302 to rotate. The rotation of the third gear 90302 causes the movable connecting block 904 to tilt via the arc-shaped toothed plate at its lower end. Simultaneously, the light-emitting plate 705 is activated to emit light of different wavelengths onto the surface of the display screen 4, and the microscope camera 708 is activated to photograph the surface of the display screen 4. At the same time, the electric rollers 704 on the camera are activated to perform multi-angle inspections of the surface of the display screen 4. This also allows for rotation of the display screen when necessary. 4. During testing, the second motor 804 is activated to drive the second gear 803 to rotate. The rotation of the second gear 803 drives the arc-shaped moving gear plate 801 to move, thereby driving the rotating disk 90201 to rotate through the limit plug 802. At the same time, the first motor 603 can be activated to drive the first gear 602 to rotate, thereby driving the internal gear ring 601 to rotate, which synchronously drives the imaging device 7 to move and emit light from multiple angles to the display screen 4 for imaging. After imaging is completed, the third motor 806 is activated to move the arc-shaped moving gear plate 801 away. At the same time, the rotating disk 90201 returns to the center under the action of the torsion spring 90202. Then, the electric lead screw 901 is activated to lower the receiving component 906 onto the sprocket conveyor belt 3, and align the fixing plate 90602 with the limit gear plate.Next, the fourth motor 90508 is activated to push the gripping block 90503 to release the limit on the receiving component 906. Then, the gripping component 905 continues to move downwards back to its original position, while the receiving component 906 is moved away by the sprocket conveyor 3.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface defect detection device for a liquid crystal display screen, comprising a housing (1), characterized in that: A base (2) is fixedly connected to the lower inner surface of the housing (1), a sprocket conveyor belt (3) is fixedly connected to the upper surface of the base (2), a testing device (9) is provided on the inner surface of the base (2), a display screen (4) is installed on the upper surface of the testing device (9), a fixed bracket (5) is fixedly connected to the upper surface of the base (2), a rotating device (6) is provided on the upper surface of the fixed bracket (5), a moving device (8) is provided between the fixed brackets (5), and a shooting device (7) is provided on the upper surface of the rotating device (6). The rotating device (6) includes an internal gear ring (601), a first gear (602) and a first motor (603). The internal gear ring (601) is rotatably connected to the inner surface of the fixed bracket (5). The first motor (603) is fixedly connected to the inner surface of the fixed bracket (5). The lower end of the first gear (602) is fixedly connected to the output end of the first motor (603). The inner ring surface of the internal gear ring (601) meshes with the first gear (602). The moving device (8) includes an arc-shaped moving toothed plate (801), a limiting plug (802), a second gear (803), a second motor (804), a first lead screw (805), a third motor (806), and a moving block (807). The third motor (806) is fixedly connected to the inner surface of the fixed bracket (5). One end of the first lead screw (805) is fixedly connected to the output end of the third motor (806), and the other end of the first lead screw (805) is rotatably connected to the inner surface of the fixed bracket (5). The moving block (804) is... 7) The threaded connection is on the side surface of the first lead screw (805), the second motor (804) is fixedly connected to the inner surface of the moving block (807), the lower end of the second gear (803) is fixedly connected to the output end of the second motor (804), the second gear (803) is meshed with the outer ring of the arc-shaped moving tooth plate (801), the arc-shaped moving tooth plate (801) is movably connected to the inner surface of the moving block (807), and the limiting plug (802) is provided in multiple and distributed on the inner ring surface of the arc-shaped moving tooth plate (801); The shooting device (7) includes an arc-shaped moving rod (701), a first limiting block (702), a second limiting block (703), an electric roller (704), a light-emitting plate (705), a limiting pin (706), a support frame (707), and a microscope camera (708). The arc-shaped moving rod (701) is provided with multiple rings and is fixedly connected to the upper surface of the internal gear ring (601). The limiting pins (706) are fixedly connected to the side surfaces of the support frame (707) and the microscope camera (708), respectively. The electric roller (704) is rotatably connected to... On the inner surfaces of the first limiting block (702) and the second limiting block (703), the first limiting block (702) is fixedly connected to the right side surface of the support frame (707), and the second limiting block (703) is fixedly connected to the right side surface of the microscope camera (708). The support frame (707) and the microscope camera (708) are movably connected to the inner surface of the arc-shaped moving rod (701) by the limiting pin (706) and the electric roller (704), respectively. The light plate (705) is fixedly connected to the left side surface of the support frame (707).

2. The liquid crystal display screen surface defect detection device according to claim 1, characterized in that: The inspection device (9) includes an electric lead screw (901), a turntable assembly (902), a tilting assembly (903), a movable connecting block (904), a clamping assembly (905), and a receiving assembly (906). The electric lead screw (901) is fixedly connected to the inner surface of the base (2). The turntable assembly (902) is rotatably connected to the output end of the electric lead screw (901). The tilting assembly (903) is fixedly connected to the upper surface of the turntable assembly (902). The movable connecting block (904) is movably connected to the inner surface of the tilting assembly (903). The clamping assembly (905) is set on the upper surface of the movable connecting block (904). The upper surface of the chain of the sprocket conveyor belt (3) is provided with a limiting block to limit the receiving assembly (906). The receiving assembly (906) is installed on the upper surface of the sprocket conveyor belt (3) through the limiting block. The display screen (4) is installed on the upper surface of the receiving assembly (906).

3. The liquid crystal display screen surface defect detection device according to claim 2, characterized in that: The clamping assembly (905) includes a slide rod (90501), a spring (90502), a clamping block (90503), a bidirectional cam (90504), a camshaft (90505), a fourth gear (90506), a fifth gear (90507), and a fourth motor (90508). One end of the slide rod (90501) is slidably connected to the inner surface of the movable connecting block (904), and the other end of the slide rod (90501) is fixedly connected to the side surface of the clamping block (90503). The spring (90502) is sleeved on the side surface of the slide rod (90501), one end of the spring (90502) is fixedly connected to the side surface of the clamping block (90503), and the other end of the spring (90502) is fixedly connected to the inner surface of the movable connecting block (904). The clamping block (90501)... 3) The fourth motor (90508) is fixedly connected to the inner surface of the movable connecting block (904) and the fifth gear (90507) is fixedly connected to the output end of the fourth motor (90508). The camshaft (90505) is rotatably connected to the inner surface of the movable connecting block (904). The fourth gear (90506) is fixedly connected to the side surface of the camshaft (90505) at the middle position. The fifth gear (90507) meshes with the fourth gear (90506). Two bidirectional cams (90504) are provided and fixedly connected to both ends of the camshaft (90505). The side of the bidirectional cam (90504) is in contact with the outer end of the gripping block (90503) extending on the side of the movable connecting block (904).

4. The liquid crystal display screen surface defect detection device according to claim 2, characterized in that: The turntable assembly (902) includes a rotating disk (90201), a torsion spring (90202), and a fixed rod (90203). The lower end of the fixed rod (90203) is fixedly connected to the output end of the electric lead screw (901). The rotating disk (90201) is rotatably connected to the upper surface of the fixed rod (90203). The upper end of the torsion spring (90202) is fixedly connected to the lower surface of the rotating disk (90201), and the lower end of the torsion spring (90202) is fixedly connected to the side surface of the fixed rod (90203).

5. The liquid crystal display screen surface defect detection device according to claim 4, characterized in that: The tilting assembly (903) includes a fixed connecting block (90301), a third gear (90302), a worm gear (90303), a worm (90304), and a sixth gear (90305). The sixth gear (90305) is fixedly connected to the inner surface of the rotating disk (90201), and the worm (90304) is fixedly connected to the output end of the sixth gear (90305). The worm gear (90303) meshes with the worm (90304). The third gear (90302) is fixedly connected to the worm gear (90303) and rotatably connected to the inner surface of the rotating disk (90201). The lower end of the movable connecting block (904) is provided with an arc-shaped toothed plate. The third gear (90302) meshes with the arc-shaped toothed plate. The fixed connecting block (90301) is fixedly connected to the upper surface of the rotating disk (90201). The lower end of the movable connecting block (904) is movably connected to the inner surface of the fixed connecting block (90301).

6. The liquid crystal display screen surface defect detection device according to claim 2, characterized in that: The receiving assembly (906) includes a receiving block (90601), a fixing plate (90602), a limiting bracket (90603), a second lead screw (90604), and a gasket (90605). The fixing plate (90602) is fixedly connected to the front and rear ends of the receiving block (90601). The receiving block (90601) is mounted on the limiting toothed plate on the sprocket conveyor belt (3) through the fixing plate (90602). The lower end of the limiting bracket (90603) is fixedly connected to the upper surface of the receiving block (90601) at the edge. The second lead screw (90604) is threadedly connected to the inner surface of the upper end of the limiting bracket (90603). The gasket (90605) is fixedly connected to the lower end of the second lead screw (90604).

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