Backlight module detection device and detection method of liquid crystal display screen

Abstract

The invention discloses a backlight module detection device of a liquid crystal display screen and a detection method, the backlight module detection device of the liquid crystal display screen comprises a bottom plate, a placing table is fixedly arranged in the center of the top of the bottom plate, mounting seats are arranged on the two sides of the placing table, and the mounting seats are arranged on the top of the bottom plate; a detection assembly used for detecting a workpiece is installed on one side of the top of the bottom plate. A fixing assembly is arranged at the top of the mounting base and comprises a clamping plate, the clamping plate is arranged at the top of the mounting base in a sliding mode, a clamping groove is formed in the clamping plate, and an adsorption assembly is arranged in the side wall of the clamping plate. The workpiece can be clamped through the clamping grooves, and when the two side edges of the workpiece are located in the clamping grooves, no shielding objects exist above the two sides of the workpiece through the arrangement of the clamping grooves, so that the integrity of workpiece detection by the detection assembly is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display screens, and in particular to a backlight module detection device and a detection method for a liquid crystal display screen. Background Art

[0002] The backlight module is one of the key components of the LCD panel. Its function is to provide sufficient brightness and evenly distributed light source so that it can display images normally. The backlight module of the LCD screen needs to be inspected using a detection device during the production process to ensure the quality of the backlight module of the LCD screen.

[0003] Chinese Patent Publication No.: CN118502144A discloses a backlight module detection device for a liquid crystal display screen, including a machine tool, an upper detection module and a lower detection module arranged on the machine tool, the machine tool is provided with a conveying component for conveying workpieces, the conveying component includes two corresponding front and rear transmission belts, and the machine tool is provided with two control components corresponding to the two transmission belts respectively.

[0004] In the prior art, when testing the backlight module, in order to maintain the stability of the backlight module during testing, the backlight module is positioned and clamped by a clamping plate. However, in actual use, when the backlight module of the LCD screen is tested, the clamping plates on both sides are located above the backlight module. During testing, the clamping plates will block part of the light, resulting in inaccurate brightness and uniformity detection of the backlight module.

[0005] Therefore, it is necessary to provide a backlight module detection device and detection method for a liquid crystal display screen to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a backlight module detection device and detection method for a liquid crystal display screen to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a backlight module detection device for a liquid crystal display screen, comprising a base plate, a placing table is fixedly arranged at the top center of the base plate, mounting seats are arranged on both sides of the placing table, the mounting seats are installed on the top of the base plate, and a detection component for detecting the workpiece is installed on one side of the top of the base plate; a stabilizing component is arranged on the top of the mounting seat, and the stabilizing component includes a clamping plate, the clamping plate is slidably arranged on the top of the mounting seat, the clamping plate is provided with a clamping groove, an adsorption component is arranged in the side wall of the clamping plate, the end of the clamping plate away from the placing table is elastically connected to a push plate, and a cylinder is arranged at the center of the end of the push plate away from the clamping plate, and when the push plate moves toward the clamping plate, the push plate drives the adsorption component to move upward.

[0008] As a further solution of the present invention: a trigger plate is elastically connected to the center of the clamping plate, and the end of the trigger plate close to the placement table slides into the clamping groove, a limit plate is arranged below the trigger plate, and a positioning block is fixedly arranged at the bottom of the end of the limit plate away from the trigger plate, a strip groove that is slidably matched with the limit plate is arranged at the top center of the mounting seat, a positioning hole that is slidably matched with the positioning block is arranged at the bottom of the inner wall of the strip groove, and a wedge block that is slidably matched with the top of the limit plate is fixedly arranged at the bottom of the trigger plate.

[0009] As a further solution of the present invention: the adsorption component includes an adsorption piece; the adsorption piece is slidably arranged in the clamping plate, a straight plate is arranged below the adsorption piece, the straight plate is slidably arranged in the clamping plate, a sealing plug is arranged on the top of the straight plate, extension plates are fixedly arranged at both ends of the straight plate close to the push plate, a lifting plate that slides with the extension plate is fixedly arranged at the bottom end of the push plate close to the clamping plate, and the side wall of the clamping plate is provided with a through opening that slides with the lifting plate.

[0010] As a further solution of the present invention: a pressure plate is slidably arranged in the clamping plate, the pressure plate is arranged above the adsorption component, and one end of the pressure plate close to the placement table slides through the side wall of the clamping plate and extends into the clamping groove. As a further solution of the present invention: a tooth plate is arranged below the pressure plate, a square column is fixedly arranged on the top of the tooth plate, and one end of the square column away from the tooth plate slides through the side wall of the pressure plate.

[0011] As a further solution of the present invention: a rotating shaft is provided for transmission cooperation below the tooth plate, a first tooth for transmission cooperation with the rotating shaft is provided at the top center of the trigger plate, a pull rope is fixedly provided at the center of one end of the pressure plate away from the clamping groove, the end of the pull rope away from the pressure plate is fixedly connected to the straight plate, a fixing frame is fixedly provided at the bottom of the inner wall of the clamping plate, and the end of the pull rope away from the pressure plate passes around the fixing frame and is fixedly connected to the straight plate.

[0012] As a further solution of the present invention: sliding columns are fixedly provided at both ends of the rotating shaft, and a gear ring is slidably connected to the periphery of the sliding column, and a connecting rod is fixedly connected to the end of the gear ring away from the sliding column, and a movable plate is fixedly connected to the end of the connecting rod away from the gear ring, and the movable plate is slidably embedded in the side wall of the clamping plate, and the end of the movable plate away from the connecting rod slides and extends into the clamping plate.

[0013] As a further solution of the present invention: the bottom of the movable plate is slidably matched with an L plate, and the L plate is slidably embedded in the side wall of the clamping plate.

[0014] As a further solution of the present invention: an airbag is fixedly arranged between the clamping plate and the push plate, an air outlet is arranged on the side wall of the clamping plate relatively away from the airbag, the air outlet is arranged above the trigger plate, an air pipe is fixedly arranged between the airbag and the air outlet, and the air pipe is arranged at the top of the inner wall of the clamping plate.

[0015] A detection method for backlight module detection using the backlight module detection device of a liquid crystal display screen as described in any one of the above items comprises the following steps: S1. Place the backlight module to be tested on a placement table; S2, start the stabilizing component to move toward the placement table to fix the backlight module; S3, starting the detection component to detect the backlight module; S5. After the detection is completed, the detection component is turned off and the movement and reset of the stabilizing component is started.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, after the workpiece is placed on the placement table, the clamping plate is started to move toward the placement table, and the workpiece can be clamped through the clamping groove. When the two side edges of the workpiece are in the clamping groove, the adsorption assembly moves upward and extends into the clamping groove and completes adsorption with the bottom of the workpiece, thereby facilitating subsequent inspection of the workpiece. Through the setting of the clamping groove, there will be no obstructions above the two sides of the workpiece, thereby ensuring the integrity of the workpiece inspection by the inspection assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the stabilizing component in the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the clamping plate in the present invention.

[0020] Figure 4 For the present invention Figure 1 Schematic diagram of the structure at A in the middle.

[0021] Figure 5 It is a structural schematic diagram of a cross-section of the middle portion of the strip groove in the present invention.

[0022] Figure 6 It is a structural schematic diagram of a cross-section of the middle portion of the clamping plate in the present invention.

[0023] Figure 7 It is a schematic diagram of the structure of the wedge block in the present invention.

[0024] Figure 8 It is a schematic diagram of the structure of the straight plate and the sealing plug in the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the connecting rod and the movable plate in the present invention.

[0026] Fig.10 For the present invention Fig. 9 Schematic diagram of the structure at B in the figure.

[0027] Fig.11 It is a schematic diagram of the structure of the L plate in the present invention.

[0028] In the figure: 1. bottom plate; 2. mounting seat; 201. strip groove; 202. positioning hole; 3. placing table; 4. detection component; 5. stabilizing component; 51. clamping plate; 511. clamping groove; 52. push plate; 53. cylinder; 54. air bag; 55. air outlet; 56. adsorption part; 57. trigger plate; 6. pressure plate; 61. tooth plate; 62. pull rope; 7. through-hole; 8. lifting plate; 9. straight plate; 91. sealing plug; 10. limit plate; 11. positioning block; 12. air pipe; 13. rotating shaft; 131. sliding column; 132. gear ring; 133. connecting rod; 14. wedge block; 15. extension plate; 16. movable plate; 17. boss; 18. L plate. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 11 In an embodiment of the present invention, a backlight module detection device and detection method for a liquid crystal display screen include a base plate 1, a placement table 3 for placing a workpiece to be detected (i.e., a backlight module of a liquid crystal display screen) is fixedly arranged at the top center of the base plate 1, mounting seats 2 are arranged on both sides of the placement table 3, the mounting seats 2 are installed on the top of the base plate 1, a detection component 4 for detecting the workpiece is installed on one side of the top of the base plate 1, a stabilizing component 5 is arranged on the top of the mounting seat 2, the stabilizing component 5 includes a clamping plate 51, the clamping plate 51 is slidably arranged on the top of the mounting seat 2, a clamping groove 511 is arranged on the clamping plate 51, an adsorption component is arranged in the side wall of the clamping plate 51, and the adsorption component is symmetrically arranged along the center of the clamping plate 51.

[0030] Preferably, the top size of the placement table 3 is smaller than the size of the workpiece, so that after the workpiece is placed on the placement table 3, both sides of the workpiece protrude from the placement table 3, thereby facilitating the movement of the stabilizing component 5 to fix the workpiece. The detection component 4 includes a base and a cross bar. The base is fixedly installed on the bottom plate 1, and the cross bar is installed on the top of the base and close to the side of the placement table 3. A detection head for detecting the workpiece is installed at the bottom of the cross bar. The detection component 4 is specifically a detection device commonly used for detecting workpieces in the prior art. The specific related structure and working principle will not be described in detail here.

[0031] In actual use, the clamping groove 511 is set on the top side of the clamping plate 51 close to the placement table 3, and the two side edges of the clamping groove 511 on the clamping plate 51 are vertical structures, and the bottom side wall of the clamping groove 511 is flush with the top of the placement table 3. In this way, when in use, after the workpiece is placed on the placement table 3, the clamping plate 51 is started to move toward the placement table 3, and the workpiece can be clamped through the clamping groove 511. When the two side edges of the workpiece are in the clamping groove 511, the adsorption component moves upward and extends into the clamping groove 511 and completes adsorption with the bottom of the workpiece, thereby facilitating subsequent inspection of the workpiece. The setting of the clamping groove 511 ensures that there will be no obstructions above the two sides of the workpiece, thereby ensuring the integrity of the workpiece inspection by the inspection component 4, avoiding the problem of the workpiece being blocked above and unable to be fully inspected, and avoiding the problem of the workpiece falling due to external reasons when inspecting.

[0032] See also Figure 1-Figure 2 Preferably, one end of the clamping plate 51 away from the placing table 3 is elastically connected to the push plate 52 through a spring, and a cylinder 53 is arranged at the center of the end of the push plate 52 away from the clamping plate 51, and the output end of the cylinder 53 is fixedly connected to the push plate 52, and the cylinder 53 is assembled and arranged on the top of the mounting seat 2. When the push plate 52 moves toward the clamping plate 51, the push plate 52 drives the adsorption component to move upward. In actual use, a round rod is arranged in the spring between the clamping plate 51 and the push plate 52, and the end of the round rod close to the clamping plate 51 is fixedly connected to the clamping plate 51, and the end of the round rod away from the clamping plate 51 slides The push plate 52 passes through the side wall of the push plate 52, thereby preventing the clamping plate 51 from not moving downward after sliding out of the top of the mounting seat 2. When the workpiece is placed on the placement table 3, the cylinder 53 is started to push the push plate 52 to move in the direction of the placement table 3, and then the clamping plate 51 is moved in the direction of the placement table 3 through the cooperation of the round rod and the spring. When the side wall of the workpiece is in the clamping groove 511, the push plate 52 continues to move toward the clamping plate 51 and drives the adsorption component to move upward to complete the adsorption cooperation with the bottom of the workpiece, and then the cylinder 53 is closed, and the detection component 4 is started to detect the workpiece.

[0033] When the side edge of the workpiece is in contact with the vertical edge of the clamping groove 511, in order to prevent the clamping plate 51 from being further pushed by the push plate 52 in the direction of the placement table 3, so that the clamping plate 51 is subjected to a force gradually increasing in the direction of the placement table 3, which may cause damage to the workpiece, preferably, refer to Figure 2 , Figure 5, a trigger plate 57 is elastically connected to the center of the clamping plate 51, and the end of the trigger plate 57 close to the placement table 3 slides into the clamping groove 511. A limit plate 10 is arranged below the trigger plate 57, and a positioning block 11 is fixedly arranged at the bottom of the end of the limit plate 10 away from the trigger plate 57. A strip groove 201 that is slidably matched with the limit plate 10 is arranged at the top center of the mounting seat 2, and a positioning hole 202 that is slidably matched with the positioning block 11 is arranged at the bottom of the inner wall of the strip groove 201. A wedge block 14 that is slidably matched with the top of the limit plate 10 is fixedly arranged at the bottom of the trigger plate 57; the trigger plate 57 is arranged at the center of the clamping groove 511, and the end of the trigger plate 57 that is away from the placement table 3 is slidably arranged in the clamping plate 51, and is elastically connected to the inner wall of the clamping plate 51 through an elastic column, and the bottom of the trigger plate 57 is connected to the clamping groove 5 The bottom of 11 is slidably fitted, and the height of the trigger plate 57 is less than the height of the side of the workpiece. The limit plate 10 is arranged in an "L"-shaped structure, and the vertical section of the limit plate 10 is slidably arranged in the clamping plate 51, and the horizontal section below the vertical section of the limit plate 10 is arranged at the bottom of the clamping plate 51. The length of the end of the limit plate 10 away from the clamping plate 51 is greater than the distance between the clamping plate 51 and the placement table 3. The positioning block 11 is arranged at the bottom of the end of the horizontal section of the limit plate 10 away from the clamping plate 51. There are multiple groups of positioning holes 202 in the strip groove 201 in a horizontal array. The bottom of the end of the wedge block 14 away from the placement table 3 is provided with an inclined surface that slides with the top of the limit plate 10, and the wedge block 14 slides and fits with the side wall of the clamping plate 51. In addition, the limit plate 10 and the inner wall of the clamping plate 51 are elastically connected by a spring.

[0034] When in use, when the clamping plate 51 is at the top of the mounting seat 2, that is, in the initial state, the end of the trigger plate 57 close to the placement table 3 extends into the clamping groove 511, and the wedge block 14 is on the side of the limit plate 10 close to the placement table 3, and the limit plate 10 is under the action of the corresponding spring, the horizontal section of the limit plate 10 is in contact with the bottom of the clamping plate 51, that is, the positioning block 11 is separated from the positioning hole 202; when the starting cylinder 53 pushes the clamping plate 51 to move toward the placement table 3 through the push plate 52, the limit plate 10 moves with the clamping plate 51, and when the side of the workpiece is in contact with the trigger plate 57 After the contact, the subsequent movement of the clamping plate 51 will cause the workpiece to push the trigger plate 57 to move into the clamping plate 51. At this time, the movement of the trigger plate 57 will drive the wedge block 14 to move. The movement of the wedge block 14 will cooperate with the top of the limit plate 10 through the inclined surface, allowing the limit plate 10 to move downward, and then the positioning block 11 moves downward to adapt to the corresponding positioning hole 202, thereby realizing the limitation of the relative position between the clamping plate 51 and the mounting seat 2. In this way, when the push plate 52 continues to move toward the clamping plate 51, the clamping plate 51 will not continue to be pushed toward the placement table 3, thereby avoiding the problem of possible damage to the workpiece. When the push plate 52 continues to move toward the clamping plate 51, it will drive the adsorption component to move upward and complete the adsorption cooperation with the bottom of the workpiece.

[0035] See also Figure 3 , Figure 4-Figure 6 , Figure 8 Preferably, the adsorption component includes an adsorption member 56; the adsorption member 56 is slidably arranged in the clamping plate 51, a straight plate 9 is arranged below the adsorption member 56, the straight plate 9 is slidably arranged in the clamping plate 51 and is elastically connected to the clamping plate 51, a sealing plug 91 is arranged on the top of the straight plate 9 and is slidably matched with the bottom of the adsorption member 56, an extension plate 15 is fixedly arranged at both ends of the straight plate 9 on one side close to the push plate 52, a lifting plate 8 slidably matched with the extension plate 15 is fixedly arranged at the bottom end of the push plate 52 on one side close to the clamping plate 51, and a through hole 7 slidably matched with the lifting plate 8 is arranged on the side wall of the clamping plate 51.

[0036] It should be noted that: the side wall of the clamping plate 51 is provided with a through hole connected to the bottom of the clamping groove 511, including a suction cup and a round tube, the suction cup is fixedly arranged on the top of the round tube, and the periphery of the round tube is elastically connected with a ring buckle, the ring buckle is fixedly connected to the inner wall of the clamping plate 51, and the top of the end of the through-hole 7 away from the push plate 52 is provided with an inclined surface slidingly matched with the extension plate 15, the round tube is a hollow structure, and the sealing plug 91 is sealingly and slidably adapted to the inner wall of the round tube, the height dimension of the sealing plug 91 is relatively small, so that when the suction cup is adsorbed and fixed to the workpiece, the straight plate 9 moves downward to make the sealing plug 91 better separated from the round tube, the size of the through hole is larger than the size of the adsorption piece 56, and a retaining ring is fixedly arranged on the periphery of the bottom end of the round tube to limit the round tube from sliding out of the ring buckle, and the straight plate 9 can only slide up and down relative to the adsorption piece 56 on the clamping plate 51.

[0037] When the pushing plate 52 pushes the clamping plate 51 to move toward the placing table 3, the side edge of the workpiece is in the clamping groove 511, and the trigger plate 57 moves and shrinks in the clamping plate 51, and then the relative position of the clamping plate 51 is limited by the limiting plate 10, the positioning block 11, and the positioning hole 202. Then the pushing plate 52 continues to move toward the clamping plate 51, so that the lifting plate 8 passes through the through-hole 7 and adapts to the extension plate 15, and then pushes the extension plate 15 to move upward, so that the straight plate 9 moves upward, firstly let the sealing plug 91 adapt to the bottom of the round tube on the adsorption piece 56, and then continue to move to push the adsorption piece 56 to move upward through the through hole, so that the suction cup contacts the bottom of the workpiece and completes the adsorption. In this process, the upward movement of the adsorption piece 56 will push the workpiece as a whole to move upward over the trigger plate 57, and then the trigger plate 57 moves to reset. The movement is blocked by the adsorption member 56 , and finally the detection of the workpiece is completed through the detection component 4 .

[0038] Furthermore, a pressure plate 6 is slidably arranged in the clamping plate 51, and the pressure plate 6 is arranged above the adsorption member 56, and the end of the pressure plate 6 close to the placement table 3 slides through the side wall of the clamping plate 51 and extends into the clamping groove 511. Preferably, the number and position of the pressure plates 6 are arranged in a one-to-one correspondence with the adsorption member 56. Through the arrangement of the pressure plate 6, when the trigger plate 57 moves and contracts into the clamping plate 51, the pressure plate 6 is driven to extend into the clamping groove 511 and is above the workpiece. Then, when the adsorption member 56 moves upward, the pressure plate 6 is driven to move downward to contact the workpiece and form a pressure on the workpiece, so that the adsorption member 56 will no longer move upward after moving upward to push the workpiece over the trigger plate 57, so that the adsorption member 56 continues to move to complete the adsorption and fixation with the workpiece, thereby avoiding the problem that the clamping plate 51 squeezes both sides of the workpiece for a long time and causes possible damage to the workpiece.

[0039] See also Figure 5-Figure 6 , Figure 9-10 Preferably, a toothed plate 61 is provided below the pressure plate 6, and a square column is fixedly provided on the top of the toothed plate 61. The end of the square column away from the toothed plate 61 slides through the side wall of the pressure plate 6, and a spring is provided between the pressure plate 6 and the toothed plate 61, and the spring can be sleeved on the periphery of the square column. A rotating shaft 13 is provided for transmission cooperation below the toothed plate 61, and the center periphery of the rotating shaft 13 is provided with a gear structure. The top center of the trigger plate 57 is provided with a first tooth tooth for transmission cooperation with the rotating shaft 13. A pull rope 62 is fixedly provided at the center of one end of the pressure plate 6 away from the clamping groove 511, and the end of the pull rope 62 away from the pressure plate 6 is fixedly connected to the straight plate 9. A fixing frame is fixedly provided at the bottom of the inner wall of the clamping plate 51, and the end of the pull rope 62 away from the pressure plate 6 is fixedly connected to the straight plate 9 by bypassing the fixing frame. In actual use, the toothed plate 61 is elastically slidably connected to the inner wall of the clamping plate 51, and the end of the toothed plate 61 close to the square column and the inner wall of the clamping plate 51 There is a gap between the walls, and the distance of the gap is greater than the distance after the trigger plate 57 moves into the clamping plate 51, and the end of the pressure plate 6 away from the tooth plate 61 protrudes out of the end of the tooth plate 61. Under the action of the square column, the pressure plate 6 can only move vertically relative to the tooth plate 61. In the initial state, the pressure plate 6 is retracted in the clamping plate 51, and the trigger plate 57 and the tooth plate 61 are close to each other at the opposite ends, and both are transmission-coordinated with the rotating shaft 13. When the trigger plate 57 moves into the clamping plate 51, the tooth plate 61 moves toward the placement table 3 through the cooperation of the first teeth and the rotating shaft 13, and then the pressure plate 6 moves toward the clamping groove 511 and extends into the clamping groove 511, so that it is located above the workpiece. Subsequently, when the straight plate 9 moves upward, it pushes the adsorption member 56 to move upward, and at the same time, the pull rope 62 pulls the pressure plate 6 downward, and the adsorption cooperation between the adsorption member 56 and the workpiece is achieved through the cooperation of the pressure plate 6.

[0040] See also Figure 6-Figure 11Preferably, sliding columns 131 are fixedly provided at both ends of the rotating shaft 13, and a gear ring 132 is slidably connected to the periphery of the sliding column 131, and a connecting rod 133 is fixedly connected to the end of the gear ring 132 away from the sliding column 131, and a movable plate 16 is fixedly connected to the end of the connecting rod 133 away from the gear ring 132, and the movable plate 16 is slidably embedded in the side wall of the clamping plate 51, and the end of the movable plate 16 away from the connecting rod 133 slides into the clamping plate 51, and the bottom of the movable plate 16 is slidably matched with an L plate 18, and the L plate 18 is slidably embedded in the side wall of the clamping plate 51.

[0041] It should be noted that a spring is arranged between the inner wall of the toothed ring 132 and the end of the sliding column 131, and a second tooth meshing with the toothed ring 132 is arranged at the bottom of the toothed plate 61, and the second tooth is arranged on the side close to the toothed ring 132, so that when the toothed ring 132 moves in the direction away from the sliding column 131, the toothed ring 132 can be separated from the toothed plate 61, and the bottom of the end of the movable plate 16 that slides into the clamping plate 51 is provided with an inclined surface facing the straight plate 9, and the end of the toothed plate 61 that extends into the clamping plate 51 corresponds to the straight plate 9. When the straight plate 9 moves upward and pushes the adsorbent 56 to move to the maximum distance, the two ends of the straight plate 9 correspond to the ends of the movable plate 16, and in this process, the straight plate 9 moves upward and slides with the inclined surface of the movable plate 16, which will push the movable plate 16 to The clamping plate 51 moves and contracts, so that the movable plate 16 drives the toothed ring 132 to separate from the toothed plate 61 through the connecting rod 133. The bottom side wall of the movable plate 16 corresponding to the end of the straight plate 9 is horizontally arrayed with a plurality of groups of limiting holes that slide and cooperate with the top of the L plate 18. The top of the L plate 18 away from the movable plate 16 is fixed with a protrusion 17 that extends into the clamping plate 51 and slides with the straight plate 9. The outer periphery of the protrusion 17 is provided with a spring. In this way, when the L plate 18 is not subjected to external force, the L plate 18 is adapted to the limiting hole, thereby limiting the relative position of the movable plate 16. In order to enable the movable plate 16 to move in the direction away from the straight plate 9 when the L plate 18 is adapted to the limiting hole, an inclined surface facing the toothed ring 132 is provided on the top side of the L plate 18 close to the limiting hole.

[0042] In actual use, in the initial state, the straight plate 9 is attached to the protruding column 17 and under the pressure of the straight plate 9, the top end of the L plate 18 is separated from the limiting hole, the tooth ring 132 is meshed with the second tooth at the bottom of the tooth plate 61, and the end of the movable plate 16 close to the straight plate 9 extends into the clamping plate 51 and is located above the straight plate 9; when the straight plate 9 moves upward so that the adsorption member 56 is adsorbed and attached to the bottom of the workpiece, in this process, the straight plate 9 moves upward so that the L plate 18 moves upward and extends into the limiting hole, and when the straight plate 9 moves to the maximum distance, the inclined surface on the movable plate 16 will push the movable plate 16 to move away from the straight plate 9, thereby causing the tooth ring 132 to mesh with the inner surface of the tooth plate 61. Separation, then the tooth plate 61 elastically moves and resets to the initial state, thereby causing the pressure plate 6 to move and shrink in the clamping plate 51, so that the pressure plate 6 will not extend into the clamping groove 511 during inspection and affect its inspection; when the inspection is completed, the cylinder 53 is started to move and reset, thereby causing the push plate 52 to move and reset, and at this time, the clamping plate 51 is limited, so the movement of the push plate 52 will cause the lifting plate 8 to separate from the extension plate 15, thereby causing the straight plate 9 to move and reset, thereby causing the sealing plug 91 to separate from the adsorption component 56, and then the adsorption component 56, the trigger plate 57, the limit plate 10, and the clamping plate 51 are moved and reset in turn, so as to be ready for the next use.

[0043] See also Figure 2-Figure 3 , Figure 5-Figure 6 Preferably, an airbag 54 is fixedly arranged between the clamping plate 51 and the push plate 52, and an air outlet 55 is arranged on the side wall of the clamping plate 51 relatively away from the airbag 54. The air outlet 55 is arranged above the trigger plate 57, and multiple groups of air outlets 55 are arranged in a horizontal array on the clamping plate 51, and an air pipe 12 is fixedly arranged between the airbag 54 and the air outlet 55. The airbag 54 and the air outlet 55 are connected through the air pipe 12, and the air pipe 12 is arranged on the top of the inner wall of the clamping plate 51. In actual use, when the clamping plate 51 is restricted by the limit plate 10 and the positioning block 11, when the push plate 52 moves relative to the clamping plate 51, the push plate 52 will squeeze the airbag 54, so that the gas in the airbag 54 is ejected from the air outlet 55 through the air pipe 12, thereby cleaning the top of the workpiece to avoid the presence of impurities that may affect the detection accuracy.

Claims

1. A backlight module detection device for a liquid crystal display screen, comprising a bottom plate, a placement table is fixedly arranged at the top center of the bottom plate, mounting seats are arranged on both sides of the placement table, the mounting seats are installed on the top of the bottom plate, and a detection component for detecting a workpiece is installed on one side of the top of the bottom plate; characterized in that: A stabilizing component is arranged on the top of the mounting seat, and the stabilizing component includes a clamping plate, which is slidably arranged on the top of the mounting seat, a clamping groove is arranged on the clamping plate, an adsorption component is arranged in the side wall of the clamping plate, and a push plate is elastically connected to the end of the clamping plate away from the placing table, and a cylinder is arranged at the center of the end of the push plate away from the clamping plate. When the push plate moves toward the clamping plate, the push plate drives the adsorption component to move upward.

2. A backlight module detection device for a liquid crystal display screen according to claim 1, characterized in that: A trigger plate is elastically connected to the center of the clamping plate, and one end of the trigger plate close to the placement table slides into the clamping groove. A limit plate is arranged below the trigger plate, and a positioning block is fixedly arranged at the bottom of the end of the limit plate away from the trigger plate. A strip groove that is slidably matched with the limit plate is arranged at the top center of the mounting seat, and a positioning hole that is slidably matched with the positioning block is arranged at the bottom of the inner wall of the strip groove, and a wedge block that is slidably matched with the top of the limit plate is fixedly arranged at the bottom of the trigger plate.

3. The backlight module detection device of a liquid crystal display screen according to claim 1, characterized in that: The adsorption assembly includes an adsorption piece; the adsorption piece is slidably arranged in the clamping plate, a straight plate is arranged below the adsorption piece, the straight plate is slidably arranged in the clamping plate, a sealing plug is arranged on the top of the straight plate, extension plates are fixedly arranged at both ends of the straight plate close to the push plate, a lifting plate slidably matched with the extension plate is fixedly arranged at the bottom end of the push plate close to the clamping plate, and the side wall of the clamping plate is provided with a through opening slidably matched with the lifting plate.

4. A backlight module detection device for a liquid crystal display screen according to claim 3, characterized in that: A pressing plate is slidably arranged in the clamping plate, the pressing plate is arranged above the adsorption component, and one end of the pressing plate close to the placing table slides through the side wall of the clamping plate and extends into the clamping groove.

5. The backlight module detection device for a liquid crystal display screen according to claim 4, characterized in that: A tooth plate is arranged below the pressing plate, a square column is fixedly arranged on the top of the tooth plate, and an end of the square column away from the tooth plate slides through the side wall of the pressing plate.

6. The backlight module detection device for a liquid crystal display screen according to claim 5, characterized in that: A rotating shaft is provided for transmission cooperation at the lower part of the toothed plate, a first tooth for transmission cooperation with the rotating shaft is provided at the top center of the trigger plate, a pull rope is fixedly provided at the center of one end of the pressure plate away from the clamping groove, the end of the pull rope away from the pressure plate is fixedly connected to the straight plate, a fixing frame is fixedly provided at the bottom of the inner wall of the clamping plate, the end of the pull rope away from the pressure plate passes around the fixing frame and is fixedly connected to the straight plate.

7. A backlight module detection device for a liquid crystal display screen according to claim 6, characterized in that: Sliding columns are fixedly provided at both ends of the rotating shaft, and a gear ring is slidably connected to the periphery of the sliding column. A connecting rod is fixedly connected to the end of the gear ring away from the sliding column, and a movable plate is fixedly connected to the end of the connecting rod away from the gear ring. The movable plate is slidably embedded in the side wall of the clamping plate, and the end of the movable plate away from the connecting rod slides into the clamping plate.

8. The backlight module detection device for a liquid crystal display screen according to claim 7, characterized in that: The bottom of the movable plate is slidably matched with an L plate, and the L plate is slidably embedded in the side wall of the clamping plate.

9. The backlight module detection device of a liquid crystal display screen according to claim 1, characterized in that: An airbag is fixedly arranged between the clamping plate and the push plate, an air outlet is arranged on the side wall of the clamping plate relatively away from the airbag, the air outlet is arranged above the trigger plate, an air pipe is fixedly arranged between the airbag and the air outlet, and the air pipe is arranged at the top of the inner wall of the clamping plate.

10. A method for detecting a backlight module using the backlight module detection device of a liquid crystal display screen as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1. Place the backlight module to be tested on a placement table; S2, start the stabilizing component to move toward the placement table to fix the backlight module; S3, starting the detection component to detect the backlight module; S5. After the detection is completed, the detection component is turned off and the movement and reset of the stabilizing component is started.

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