Display screen defect detection device and detection method thereof

Abstract

The invention relates to the field of display screen detection, in particular to a display screen defect detection device and a detection method thereof.The display screen defect detection device comprises a conveyor, two mounting plates are fixedly connected to the conveyor, clamping mechanisms are mounted on the two mounting plates, and the two clamping mechanisms are used for limiting a display screen; a cleaning mechanism for cleaning the display screen is mounted on the mounting plate; the clamping mechanism comprises a threaded cylinder rotationally mounted on the mounting plate, a clamping screw rod arranged in the threaded cylinder in a penetrating manner and a clamping guide rod arranged on the mounting plate in a penetrating manner, a clamping plate is arranged on the conveyor, and the clamping screw rod and the clamping guide rod are fixedly connected with the clamping plate; a fixing plate is fixedly connected to the conveyor, a driving motor is installed on the fixing plate, a first gear is fixedly connected to an output shaft of the driving motor, and a second gear meshed with the first gear is fixedly connected to the threaded cylinder. The problem that the detection effect of the display screen is affected is solved.

Description

Technical Field

[0001] The present invention relates to the field of display screen detection, and in particular to a display screen defect detection device and a detection method thereof. Background Art

[0002] During the inspection of electronic product display screens, the main inspection scope is the bad pixels, dark pixels, bright pixels, cracks and scratches in the display screen. During the inspection process, industrial cameras are generally used to perform visual inspection of the display screen. Industrial cameras are used to capture bad pixels and other defects on the display screen, and defective displays are eliminated to ensure that the final display screen is a qualified product.

[0003] Related technologies can refer to the Chinese invention patent with announcement number CN116930204A, which discloses a display screen defect detection device and detection method, including two conveyors, two camera brackets, two connecting frames, two fixed blocks and a controller, the two conveying directions of the two conveyors for the display screen are consistent; the two camera brackets are respectively installed on the top of the two conveyors, and a plurality of detection cameras for detecting the display screen are installed inside the camera brackets; the two connecting frames are symmetrically fixed between the two conveyors, and a rotatable shaft rod is arranged between the two connecting frames, and a servo motor for controlling the rotation of the shaft rod is installed on one side of one of the connecting frames; the two fixed blocks are respectively fixed on both sides of the shaft rod, and fixed boxes are fixed on both sides of the fixed blocks, and two limit frames are symmetrically fixed on the side of the fixed box facing the conveyor, and a movable frame is installed on the opposite side of the two limit frames through a buffer mechanism, and a plurality of rollers are evenly spaced inside the movable frame; the controller is installed on the outside of one of the conveyors, and the conveyor and the servo motor are electrically connected to the controller.

[0004] With regard to the above-mentioned related technologies, during the transportation of the display screen, the display screen is easily offset on the conveyor. When the detection camera shoots the display screen, the detection camera cannot accurately aim at the display screen to shoot, which will affect the detection effect of the display screen. Summary of the invention

[0005] In order to solve the problem of affecting the detection effect of a display screen, the present invention provides a display screen defect detection device and a detection method thereof.

[0006] In a first aspect, a display screen defect detection device provided by the present invention adopts the following technical solution:

[0007] A display screen defect detection device comprises a conveyor, wherein two relatively arranged mounting plates are fixedly connected to the conveyor, and clamping mechanisms are installed on both mounting plates, and the two clamping mechanisms are used to limit the display screen, and a cleaning mechanism for cleaning the display screen is installed on the mounting plate; the clamping mechanism comprises a threaded barrel rotatably mounted on the mounting plate, a clamping screw inserted in the threaded barrel, and a clamping guide rod inserted in the mounting plate, and a clamping plate is provided on the conveyor, and the clamping screw and the clamping guide rod are both fixedly connected to the clamping plate; a fixing plate is fixedly connected to the conveyor, and a driving motor is installed on the fixing plate, and a first gear is fixedly connected to the output shaft of the driving motor, and a second gear meshing with the first gear is fixedly connected to the threaded barrel.

[0008] Preferably, a sliding groove is provided on the fixed plate, a sliding seat is placed in the sliding groove, the driving motor is fixedly connected to the sliding seat, a first rotating shaft and a second rotating shaft are rotatably installed on the mounting plate, a third gear is fixedly connected to the first rotating shaft, a fourth gear meshing with the third gear is fixedly connected to the second rotating shaft, a conveyor belt is sleeved on the second rotating shaft and the threaded cylinder, when the first gear is separated from the second gear, the first gear meshes with the third gear, and a sensing mechanism for controlling the movement of the driving motor is installed on the clamping plate.

[0009] Preferably, a sensing groove is provided on the side wall of the clamping plate facing the display screen, and the sensing mechanism includes a first spring fixedly connected to the inner wall of the sensing groove and a sensing block slidably installed in the sensing groove, the first spring is fixedly connected to the sensing block, the sensing block can contact the display screen, a first electric shock is provided on the sensing block, and a second electric shock used in conjunction with the first electric shock is provided on the inner wall of the sensing groove; a battery and an electromagnet are fixedly connected to the fixed plate, the electromagnet and the battery are electrically connected through a wire, the electromagnet and the first electric shock are electrically connected through a wire, and the battery and the second electric shock are electrically connected through a wire, an iron sheet used in conjunction with the electromagnet is fixedly connected to the drive motor, a second spring is fixedly connected between the drive motor and the fixed plate, and a locking mechanism for locking the sensing block is installed on the clamping plate.

[0010] Preferably, a locking installation groove is provided on the inner wall of the sensing groove, and the locking mechanism includes a locking spring fixedly connected to the inner wall of the locking installation groove and a locking block slidably installed in the locking installation groove, the locking spring is fixedly connected to the locking block, the locking block abuts against the sensing block, and the sensing block is provided with a locking plug-in groove for inserting the locking block.

[0011] Preferably, a sliding rod is passed through the clamping plate, and the sliding rod extends into the sensing groove. The second electric contact is arranged on the sliding rod. A blocking rod is fixedly connected to the fixed plate. A sliding plate is fixedly connected to the sliding rod. A sliding inclined surface is formed on the sliding plate, and the sliding inclined surface can contact the blocking rod. A third spring is fixedly connected between the sliding plate and the clamping plate. A first connecting rod is passed through the clamping plate, and the first connecting rod extends into the locking mounting groove and is fixedly connected to the locking block. The first connecting rod and the sliding rod are fixedly connected via a second connecting rod.

[0012] Preferably, the cleaning mechanism includes a cleaning screw rotatably mounted on a mounting plate and a cleaning guide rod fixedly connected to the mounting plate, a movable plate is provided on the conveyor, the cleaning screw and the cleaning guide rod are both inserted into the movable plate, the cleaning screw is threadedly connected to the movable plate, a cleaning plate is mounted on the movable plate, a cleaning sponge is fixedly connected to the cleaning plate, a transmission mechanism is mounted on the fixed plate, and the drive motor can drive the cleaning screw to rotate through the transmission mechanism.

[0013] Preferably, the fixed plate is fixedly connected with a first fixed block, the driving motor is fixedly connected with a second fixed block, the transmission mechanism includes a telescopic rod rotatably installed between the first fixed block and the second fixed block, one end of the telescopic rod is connected to the output shaft of the driving motor through a bevel gear set, the other end of the telescopic rod is connected to the cleaning screw through a bevel gear set, the cleaning screw is fixedly connected with a fourth gear, a first rack meshing with the fourth gear is slidably installed on the fixed plate, and a fourth spring is fixedly connected between the first rack and the fixed plate; the first gear includes a gear ring fixedly connected to the output shaft of the driving motor, a plurality of first teeth are hingedly connected to the gear ring, the hinge shafts of the plurality of first teeth are located on one side of the first teeth, and the hinge shafts of the plurality of first teeth are all sleeved with torsion springs.

[0014] Preferably, a second rack and a third rack are slidably mounted on the movable plate, the cleaning plate is fixedly connected to the second rack, a spray mechanism is mounted on the third rack, the spray mechanism includes a detergent storage box fixedly connected to the mounting plate, a spray pipe is fixedly connected to the third rack, the detergent storage box and the spray pipe are connected through a feed pipe, a paint roller located below the spray pipe is rotatably mounted on the third rack, the paint roller can contact the display screen, a drive shaft is rotatably mounted on the movable plate, a drive gear is fixedly connected to the drive shaft, the drive gear can mesh with the second rack and the third rack at the same time, the second rack and the third rack move in opposite directions, a drive mechanism for driving the drive shaft to rotate is mounted on both mounting plates, and a closing mechanism for sealing the feed pipe is mounted in the feed pipe.

[0015] Preferably, the driving mechanism includes a driving rod fixedly connected to the mounting plate, the bottom of the driving rod is hingedly connected to a plurality of second teeth, the hinge shafts among the plurality of second teeth are located on the side of the second teeth close to the mounting plate, the hinge shafts among the plurality of second teeth are all provided with torsion springs, and a fifth gear is fixedly connected to the driving shaft, and the fifth gear can mesh with the plurality of second teeth.

[0016] In a second aspect, a display screen defect detection method provided by the present invention adopts the following technical solution:

[0017] A method for detecting screen defects of a display screen comprises the following steps:

[0018] S1. First, place the display screen on the conveyor. When the display screen is conveyed to the bottom of the detection camera, start the drive motor, which drives the clamping plate to limit the display screen.

[0019] S2, the driving motor drives the moving plate to move at the same time, and the moving plate drives the coating roller to apply the cleaning agent on the display screen, and the cleaning agent in the cleaning agent storage box is sprayed on the coating roller through the spraying pipe;

[0020] S3, when the two opposite clamping plates have completed the position limiting of the display screen, the driving motor moves so that the first gear is meshed with the third gear, and the driving motor drives the two clamping plates to move away from each other;

[0021] S4. When the driving motor drives the clamping plate to return to the initial position, the driving motor is turned off, and the fourth spring drives the cleaning screw to rotate, so that the movable plate moves in the opposite direction. At this time, the coating roller is separated from the display screen, and the cleaning plate contacts the display screen to wipe off the detergent on the display screen.

[0022] In summary, the present invention includes at least the following beneficial technical effects:

[0023] 1. When the display screen is transported to the bottom of the detection camera, the driving motor is started, the driving motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the threaded barrel to rotate, the threaded barrel drives the clamping screw to move, the clamping screw drives the clamping plate to move, and the two relative clamping plates limit the display screen so that the display screen can be aligned with the detection camera, solving the problem of affecting the detection effect of the display screen;

[0024] 2. When the display screen is aligned with the detection camera, the sensing mechanism controls the driving motor to move, and the driving motor drives the first gear to move. When the first gear is separated from the second gear, the first gear is meshed with the third gear, and the driving motor drives the third gear to rotate, and the third gear drives the fourth gear to rotate, and the fourth gear drives the second rotating shaft to rotate. The second rotating shaft drives the threaded barrel to reverse through the conveyor belt, so that the clamping plate can be separated from the display screen, and the clamping plate will not block the side of the display screen, further solving the problem of affecting the detection effect of the display screen;

[0025] 3. The driving motor drives the cleaning screw to rotate through the transmission mechanism, the cleaning screw drives the moving plate to move, the moving plate drives the cleaning plate to move, the cleaning plate wipes the oil and dust on the display screen, and further solves the problem of affecting the detection effect of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a display screen defect detection device according to an embodiment of the present invention.

[0027] Figure 2 Schematic diagram of the structure of the clamping mechanism of the embodiment of the present invention.

[0028] Figure 3 Schematic diagram of the structure of the sensing mechanism of the embodiment of the present invention.

[0029] Figure 4 The present invention Figure 3 Schematic diagram of the enlarged structure of part A.

[0030] Figure 5 Schematic diagram of the structure of the locking mechanism of the embodiment of the present invention.

[0031] Figure 6 Schematic diagram of the structure of the transmission mechanism of the embodiment of the present invention.

[0032] Figure 7 It is a structural schematic diagram of a spraying mechanism according to an embodiment of the present invention.

[0033] Figure 8 It is a schematic structural diagram of a cleaning mechanism according to an embodiment of the present invention.

[0034] Fig. 9 Schematic diagram of the structure of the driving mechanism of the embodiment of the present invention.

[0035] Fig.10 Schematic diagram of the structure of the sealing mechanism of the embodiment of the present invention.

[0036] Explanation of the reference numerals: 1. conveyor; 11. mounting plate; 12. fixing plate; 121. first fixing block; 2. clamping mechanism; 21. threaded barrel; 211. second gear; 22. clamping screw; 23. clamping guide rod; 24. clamping plate; 241. induction slot; 242. locking mounting slot; 25. driving motor; 251. first gear; 2511. gear ring; 2512. first tooth; 252. second fixing block; 26. first rotating shaft; 261. third gear; 27. second rotating shaft; 271. fourth gear; 28. conveyor belt; 3. induction mechanism; 30. sliding plate; 301. sliding slope; 302. third spring; 31. first spring; 32. induction block; 321. locking plug-in slot; 33. first electric shock; 34. second electric shock; 35. electromagnet; 36. iron Plate; 37, second spring; 38, sliding rod; 39, blocking rod; 4, locking mechanism; 41, locking spring; 42, locking block; 43, first connecting rod; 44, second connecting rod; 5, cleaning mechanism; 51, cleaning screw; 52, cleaning guide rod; 53, moving plate; 54, cleaning plate; 55, second rack; 56, third rack; 57, driving shaft; 58, driving gear; 6, transmission mechanism; 61, telescopic rod; 62, fourth gear; 63, first rack; 64, fourth spring; 7, spraying mechanism; 71, detergent storage box; 72, spray pipe; 73, paint roller; 74, feeding pipe; 8, driving mechanism; 81, driving rod; 82, second tooth; 83, fifth gear; 9, closing mechanism; 91, closing shaft; 92, valve; 93, closing gear; 94, closing rack. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-10 The present invention is described in further detail.

[0038] The embodiment of the present invention discloses a display screen defect detection device and a detection method thereof. Figures 1 to 4 The display screen defect detection device includes a conveyor 1, which includes a conveyor frame and a conveyor chain plate. The conveyor frame is fixedly connected to two relatively arranged mounting plates 11, and the mounting plate 11 is fixedly connected to the mounting frame. The bottom of the mounting frame is fixedly connected to a detection camera, and clamping mechanisms 2 are installed on the two mounting plates 11. The two clamping mechanisms 2 can limit the display screen, and a cleaning mechanism 5 that can clean the display screen is installed on the mounting plate 11.

[0039] The clamping mechanism 2 includes a threaded barrel 21, a clamping screw 22 and a clamping guide rod 23. The threaded barrel 21 is rotatably mounted on the mounting plate 11. The clamping screw 22 is inserted into the threaded barrel 21. The clamping guide rod 23 is inserted into the mounting plate 11. A clamping plate 24 is provided on the conveying chain plate. The clamping screw 22 and the clamping guide rod 23 are both fixedly connected to the clamping plate 24. The conveyor 1 is fixedly connected to a fixed plate 12. A driving motor 25 is installed on the fixed plate 12. A first gear 251 is fixedly connected to the output shaft of the driving motor 25. The threaded barrel 21 is fixedly connected to the first gear 251. 251 is meshed with the second gear 211; when the display screen is transported to the bottom of the detection camera, the driving motor 25 is started, the driving motor 25 drives the first gear 251 to rotate, the first gear 251 drives the second gear 211 to rotate, the second gear 211 drives the threaded barrel 21 to rotate, the threaded barrel 21 drives the clamping screw 22 to move, the clamping screw 22 drives the clamping plate 24 to move, the two relative clamping plates 24 limit the display screen, so that the display screen can be aligned with the detection camera, solving the problem of affecting the detection effect of the display screen.

[0040] Reference Figure 2 and Figure 3 A sliding groove is provided on the fixed plate 12, a sliding seat is placed in the sliding groove, the driving motor 25 is fixedly connected to the sliding seat, a first rotating shaft 26 and a second rotating shaft 27 are rotatably installed on the mounting plate 11, a third gear 261 is fixedly connected to the first rotating shaft 26, a fourth gear 271 meshing with the third gear 261 is fixedly connected to the second rotating shaft 27, a conveyor belt 28 is sleeved on the second rotating shaft 27 and the threaded cylinder 21, when the first gear 251 is separated from the second gear 211, the first gear 251 is meshed with the third gear 261, and a sensing mechanism 3 for controlling the movement of the driving motor 25 is installed on the clamping plate 24; when the display screen is aligned with the detection camera, the sensing mechanism 3 is mounted ... The response mechanism 3 controls the driving motor 25 to move, and the driving motor 25 drives the first gear 251 to move. When the first gear 251 is separated from the second gear 211, the first gear 251 is meshed with the third gear 261, and the driving motor 25 drives the third gear 261 to rotate, and the third gear 261 drives the fourth gear 271 to rotate, and the fourth gear 271 drives the second rotating shaft 27 to rotate. The second rotating shaft 27 drives the threaded cylinder 21 to reverse through the conveyor belt 28, so that the clamping plate 24 can be separated from the display screen, and the clamping plate 24 will not block the side of the display screen, which further solves the problem of affecting the detection effect of the display screen.

[0041] Reference Figure 3 and Figure 5A sensing groove 241 is provided on the side wall of the clamping plate 24 facing the display screen, and the sensing mechanism 3 includes a first spring 31 and a sensing block 32. The first spring 31 is fixedly connected to the inner wall of the sensing groove 241, and the sensing block 32 is slidably installed in the sensing groove 241. The first spring 31 is fixedly connected to the sensing block 32, and the sensing block 32 can contact the display screen. A first electric contact 33 is provided on the sensing block 32, and a second electric contact 34 used in conjunction with the first electric contact 33 is provided on the inner wall of the sensing groove 241; a battery and an electromagnet 35 are fixedly connected to the fixing plate 12, and the electromagnet 35 is electrically connected to the battery through a wire, the electromagnet 35 is electrically connected to the first electric contact 33 through a wire, and the battery is electrically connected to the second electric contact 34 through a wire. Then, an iron sheet 36 used in conjunction with the electromagnet 35 is fixedly connected to the drive motor 25, and a second spring 37 is fixedly connected between the drive motor 25 and the fixed plate 12; in the process of the clamping plate 24 moving toward the side close to the display screen, the clamping plate 24 drives the sensing block 32 to move, and when the sensing block 32 contacts the display screen, the clamping plate 24 continues to move, and when the clamping plate 24 contacts the display screen, the first electric contact 33 contacts the second electric contact 34, and the battery energizes the electromagnet 35, and the electromagnet 35 attracts the iron sheet 36, and the iron sheet 36 drives the drive motor 25 to move, so that the first gear 251 is meshed with the third gear 261, which can drive the clamping plate 24 to move toward the side away from the display screen.

[0042] Reference Figure 5 A locking mechanism 4 for locking the sensing block 32 is installed on the clamping plate 24, and a locking installation groove 242 is provided on the inner wall of the sensing groove 241. The locking mechanism 4 includes a locking spring 41 and a locking block 42. The locking spring 41 is fixedly connected to the inner wall of the locking installation groove 242, and the locking block 42 is slidably installed in the locking installation groove 242. The locking spring 41 is fixedly connected to the locking block 42, and the locking block 42 abuts against the sensing block 32. A locking plug-in groove 321 for inserting the locking block 42 is provided on the sensing block 32; in the process of the sensing block 32 moving relative to the clamping plate 24, when the locking block 42 is opposite to the locking plug-in groove 321, the locking spring 41 pushes the locking block 42 to be inserted into the locking plug-in groove 321, and limits the sensing block 32, so that the first electric contact 33 is in continuous contact with the second electric contact 34.

[0043] Reference Figure 3 and Figure 5The clamping plate 24 is provided with a sliding rod 38, which extends into the sensing groove 241. The second electric contact 34 is arranged on the sliding rod 38. The fixing plate 12 is fixedly connected with a blocking rod 39. The sliding rod 38 is fixedly connected with a sliding plate 30. The sliding plate 30 is formed with a sliding inclined surface 301, which can contact the blocking rod 39. A third spring 302 is fixedly connected between the sliding plate 30 and the clamping plate 24. The clamping plate 24 is provided with a first connecting rod 43, which extends into the locking mounting groove 242 and is fixedly connected to the locking block 42. The first connecting rod 43 and the sliding rod 38 are fixedly connected by the second connecting rod 44. Fixed connection; in the process of the clamping plate 24 moving toward the side away from the display screen, the clamping plate 24 drives the sliding plate 30 to move, and when the blocking rod 39 contacts the sliding inclined surface 301, the blocking rod 39 pushes the sliding plate 30 to move, and the sliding plate 30 drives the sliding rod 38 to move, and the sliding rod 38 drives the second electric contact 34 to separate from the first electric contact 33, and the driving motor 25 can return to the initial position for continued use next time. At the same time, the sliding rod 38 drives the first connecting rod 43 to move, and the first connecting rod 43 drives the locking block 42 to disengage from the locking plug slot 321, and the first spring 31 pushes the sensing block 32 to extend out of the sensing slot 241.

[0044] Reference Figures 2 to 7 The cleaning mechanism 5 includes a cleaning screw 51 and a cleaning guide rod 52. The cleaning screw 51 is rotatably mounted on the mounting plate 11, and the cleaning guide rod 52 is fixedly connected to the mounting plate 11. A movable plate 53 is arranged on the conveying chain plate. The cleaning screw 51 and the cleaning guide rod 52 are both penetrated into the movable plate 53. The cleaning screw 51 is threadedly connected to the movable plate 53. A cleaning plate 54 is mounted on the movable plate 53. A cleaning sponge is fixedly connected to the cleaning plate 54. A transmission mechanism 6 is mounted on the fixed plate 12. The driving motor 25 can drive the cleaning screw 51 to rotate through the transmission mechanism 6. The cleaning screw 51 drives the movable plate 53 to move. The movable plate 53 drives the cleaning plate 54 to move. The cleaning plate 54 wipes the oil and dust on the display screen, further solving the problem of affecting the detection effect of the display screen.

[0045] Reference Figure 3 and Figure 6, a first fixed block 121 is fixedly connected to the fixed plate 12, a second fixed block 252 is fixedly connected to the drive motor 25, the transmission mechanism 6 includes a telescopic rod 61, the telescopic rod 61 is rotatably installed between the first fixed block 121 and the second fixed block 252, one end of the telescopic rod 61 is connected to the output shaft of the drive motor 25 through a bevel gear set, the other end of the telescopic rod 61 is connected to the cleaning screw 51 through a bevel gear set, a fourth gear 62 is fixedly connected to the cleaning screw 51, a first rack 63 meshing with the fourth gear 62 is slidably installed on the fixed plate 12, and a fourth spring 64 is fixedly connected between the first rack 63 and the fixed plate 12; the first gear 251 includes a gear ring 2511, the gear ring 2511 is fixedly connected to the output shaft of the drive motor 25, and the gear ring 25 11 is hingedly connected with multiple first teeth 2512, the hinge shafts in the multiple first teeth 2512 are located on one side of the first teeth 2512, and the hinge shafts in the multiple first teeth 2512 are all sleeved with torsion springs; the driving motor 25 drives the telescopic rod 61 to rotate, and the telescopic rod 61 drives the cleaning screw 51 to rotate, so that the display screen can be cleaned, and at the same time, the cleaning screw 51 drives the fourth gear 62 to rotate, the fourth gear 62 drives the first rack 63 to move, and the first rack 63 drives the fourth spring 64 to stretch; when the driving motor 25 is turned off, the fourth spring 64 drives the first rack 63 to move, the first rack 63 drives the fourth gear 62 to reverse, and the fourth gear 62 drives the cleaning screw 51 to reverse, so that the movable plate 53 moves in the opposite direction.

[0046] Reference Figures 2 to 8 A second rack 55 and a third rack 56 are slidably mounted on the movable plate 53, the cleaning plate 54 is fixedly connected to the second rack 55, a spraying mechanism 7 is mounted on the third rack 56, the spraying mechanism 7 comprises a detergent storage box 71, the detergent storage box 71 is fixedly connected to the mounting plate 11, a spraying pipe 72 is fixedly connected to the third rack 56, the detergent storage box 71 and the spraying pipe 72 are connected through a feed pipe 74, a coating roller 73 located below the spraying pipe 72 is rotatably mounted on the third rack 56, and the spraying pipe The nozzle on 72 is set toward the coating roller 73, and the coating roller 73 can contact the display screen. A driving shaft 57 is rotatably installed on the movable plate 53, and a driving gear 58 is fixedly connected to the driving shaft 57. The driving gear 58 can engage with the second rack 55 and the third rack 56 at the same time. The moving directions of the second rack 55 and the third rack 56 are opposite. A driving mechanism 8 for driving the driving shaft 57 to rotate is installed on the two mounting plates 11, and a closing mechanism 9 for sealing the feeding pipe 74 is installed in the feeding pipe 74.

[0047] In the process of driving the movable plate 53 to move driven by the driving motor 25, the driving mechanism 8 drives the driving shaft 57 to rotate, the driving shaft 57 drives the driving gear 58 to rotate, and the driving gear 58 drives the second rack 55 and the third rack 56 to move, so that the cleaning plate 54 is separated from the display screen, and the paint roller 73 contacts the display screen. At this time, the closing mechanism 9 is opened, and the detergent in the detergent storage box 71 is sprayed on the paint roller 73 through the spray pipe 72. The movable plate 53 drives the paint roller 73 to move, so that the detergent is applied to the display screen. When the driving motor 25 is turned off, the movable plate 53 moves in the opposite direction. At this time, the driving mechanism 8 drives the driving shaft 57 to reverse, so that the cleaning plate 54 contacts the display screen, and the paint roller 73 is separated from the display screen. The closing mechanism 9 blocks the feeding pipe 74, and the cleaning plate 54 wipes off the detergent and oil stains on the display screen, so that the display screen is cleaned more cleanly.

[0048] Reference Figure 6 and Fig. 9 The driving mechanism 8 includes a driving rod 81, which is fixedly connected to the mounting plate 11. The bottom of the driving rod 81 is hingedly connected to a plurality of second teeth 82. The hinge shafts of the plurality of second teeth 82 are located on the side of the second teeth 82 close to the mounting plate 11. The hinge shafts of the plurality of second teeth 82 are sleeved with torsion springs. A fifth gear 83 is fixedly connected to the driving shaft 57, and the fifth gear 83 can mesh with the plurality of second teeth 82. In the process of the moving plate 53 moving toward the side close to the mounting plate 11, the fifth gear 83 contacts the plurality of second teeth 82, and the fifth gear 83 does not rotate. When the moving plate 53 moves toward the side away from the mounting plate 11, the plurality of second teeth 82 drive the fifth gear 83 to rotate, and the fifth gear 83 drives the driving shaft 57 to rotate, so that the display screen can be cleaned.

[0049] Reference Figure 7 and Fig.10 The closing mechanism 9 includes a closing shaft 91, a valve 92, a closing gear 93 and a closing rack 94. The closing shaft 91 is rotatably mounted in the feed pipe 74 and extends to the outside of the feed pipe 74. The valve 92 is fixedly connected to the closing shaft 91 and is located in the feed pipe 74. The closing gear 93 is fixedly connected to the closing shaft 91 and is located outside the feed pipe 74. The closing rack 94 is fixedly connected to the moving plate 53 and meshes with the closing gear 93. In the process of the third rack 56 moving downward, the third rack 56 drives the closing gear 93 to move downward, the closing gear 93 rotates relatively, the closing gear 93 drives the closing shaft 91 to rotate, and the closing shaft 91 drives the valve 92 to rotate, so that the feed pipe 74 can be opened.

[0050] The implementation principle of a display screen defect detection device according to an embodiment of the present invention is as follows: when the display screen is conveyed to the bottom of the detection camera, the drive motor 25 is started, the drive motor 25 drives the clamping plate 24 to move, the clamping plate 24 drives the induction block 32 to move, when the induction block 32 contacts the display screen, the clamping plate 24 continues to move, when the clamping plate 24 contacts the display screen, the display screen is aligned with the detection camera, the first electric contact 33 contacts the second electric contact 34, the locking spring 41 pushes the locking block 42 to be inserted into the locking slot 321, the battery energizes the electromagnet 35, and the electric The magnet 35 attracts the iron sheet 36, and the iron sheet 36 drives the driving motor 25 to move, so that the first gear 251 is meshed with the third gear 261, and the driving motor 25 drives the clamping plate 24 to move in the opposite direction to separate from the display screen; at the same time, the driving motor 25 drives the moving plate 53 to move, at this time, the coating roller 73 contacts the display screen, the cleaning plate 54 is separated from the display screen, the valve 92 is opened, and the detergent in the detergent storage box 71 is sprayed on the coating roller 73 through the spray pipe 72, and the moving plate 53 drives the coating roller 73 to move, so that the detergent is applied to the display screen.

[0051] When the blocking rod 39 contacts the sliding slope 301, the blocking rod 39 pushes the sliding plate 30 to move, and the sliding plate 30 drives the second electric contact 34 to separate from the first electric contact 33, and the driving motor 25 returns to the initial position. At the same time, the sliding rod 38 drives the locking block 42 to disengage from the locking plug-in slot 321, and the first spring 31 pushes the sensing block 32 to extend out of the sensing slot 241; the fourth spring 64 drives the moving plate 53 to move in the opposite direction, the cleaning plate 54 contacts the display screen, the paint roller 73 separates from the display screen, the valve 92 is closed, and the cleaning plate 54 wipes off the detergent and oil stains on the display screen.

[0052] A method for detecting screen defects of a display screen comprises the following steps:

[0053] S1. First, place the display screen on the conveyor 1. When the display screen is conveyed to the bottom of the detection camera, start the drive motor 25, and the drive motor 25 drives the clamping plate 24 to limit the display screen.

[0054] S2. At the same time, the driving motor 25 drives the moving plate 53 to move, and the moving plate 53 drives the coating roller 73 to apply the cleaning agent on the display screen. At this time, the cleaning agent in the cleaning agent storage box 71 is sprayed on the coating roller 73 through the spraying pipe 72.

[0055] S3. When the two opposite clamping plates 24 have completed the position limiting of the display screen, the driving motor 25 moves so that the first gear 251 is meshed with the third gear 261, and the driving motor 25 drives the two clamping plates 24 to move away from each other.

[0056] S4. When the driving motor 25 drives the clamping plate 24 to return to the initial position, the driving motor 25 is turned off, and the fourth spring 64 drives the cleaning screw 51 to rotate, so that the moving plate 53 moves in the opposite direction. At this time, the coating roller 73 is separated from the display screen, and the cleaning plate 54 contacts the display screen to wipe off the detergent on the display screen.

[0057] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A display screen defect detection device, comprising a conveyor (1), characterized in that: The conveyor (1) is fixedly connected to two mounting plates (11) arranged opposite to each other, and the two mounting plates (11) are both mounted with a clamping mechanism (2), and the two clamping mechanisms (2) are used to limit the position of the display screen. The mounting plate (11) is mounted with a cleaning mechanism (5) for cleaning the display screen; the clamping mechanism (2) comprises a threaded barrel (21) rotatably mounted on the mounting plate (11), a clamping screw (22) inserted in the threaded barrel (21), and a clamping screw (22) inserted on the mounting plate (11). A clamping guide rod (23), a clamping plate (24) is arranged on the conveyor (1), and the clamping screw rod (22) and the clamping guide rod (23) are both fixedly connected to the clamping plate (24); a fixing plate (12) is fixedly connected to the conveyor (1), a driving motor (25) is installed on the fixing plate (12), a first gear (251) is fixedly connected to the output shaft of the driving motor (25), and a second gear (211) meshing with the first gear (251) is fixedly connected to the threaded barrel (21).

2. A display screen defect detection device according to claim 1, characterized in that: The fixing plate (12) is provided with a sliding groove, a sliding seat is placed in the sliding groove, the driving motor (25) is fixedly connected to the sliding seat, a first rotating shaft (26) and a second rotating shaft (27) are rotatably mounted on the mounting plate (11), a third gear (261) is fixedly connected to the first rotating shaft (26), a fourth gear (271) meshing with the third gear (261) is fixedly connected to the second rotating shaft (27), a conveyor belt (28) is sleeved on the second rotating shaft (27) and the threaded cylinder (21), when the first gear (251) is separated from the second gear (211), the first gear (251) is meshed with the third gear (261), and a sensing mechanism (3) for controlling the movement of the driving motor (25) is mounted on the clamping plate (24).

3. A display screen defect detection device according to claim 2, characterized in that: The side wall of the clamping plate (24) facing the display screen is provided with a sensing groove (241), and the sensing mechanism (3) comprises a first spring (31) fixedly connected to the inner wall of the sensing groove (241) and a sensing block (32) slidably installed in the sensing groove (241), the first spring (31) is fixedly connected to the sensing block (32), the sensing block (32) can contact the display screen, the sensing block (32) is provided with a first electric contact (33), and the inner wall of the sensing groove (241) is provided with a second electric contact (34) used in conjunction with the first electric contact (33); the fixed A battery and an electromagnet (35) are fixedly connected to the plate (12), the electromagnet (35) and the battery are electrically connected via a wire, the electromagnet (35) and the first electric contact (33) are electrically connected via a wire, the battery and the second electric contact (34) are electrically connected via a wire, an iron sheet (36) used in conjunction with the electromagnet (35) is fixedly connected to the drive motor (25), a second spring (37) is fixedly connected between the drive motor (25) and the fixed plate (12), and a locking mechanism (4) for locking the induction block (32) is installed on the clamping plate (24).

4. A display screen defect detection device according to claim 3, characterized in that: The inner wall of the sensing groove (241) is provided with a locking installation groove (242), and the locking mechanism (4) comprises a locking spring (41) fixedly connected to the inner wall of the locking installation groove (242) and a locking block (42) slidably installed in the locking installation groove (242), the locking spring (41) is fixedly connected to the locking block (42), the locking block (42) abuts against the sensing block (32), and the sensing block (32) is provided with a locking insertion groove (321) for the locking block (42) to be inserted.

5. A display screen defect detection device according to claim 4, characterized in that: The clamping plate (24) is provided with a sliding rod (38), and the sliding rod (38) extends into the sensing groove (241); the second electric contact (34) is arranged on the sliding rod (38); the fixing plate (12) is fixedly connected with a blocking rod (39); the sliding rod (38) is fixedly connected with a sliding plate (30); a sliding inclined surface (301) is formed on the sliding plate (30); the sliding inclined surface (301) can contact with the blocking rod (39); a third spring (302) is fixedly connected between the sliding plate (30) and the clamping plate (24); a first connecting rod (43) is provided on the clamping plate (24); the first connecting rod (43) extends into the locking mounting groove (242) and is fixedly connected to the locking block (42); the first connecting rod (43) and the sliding rod (38) are fixedly connected via a second connecting rod (44).

6. A display screen defect detection device according to claim 2, characterized in that: The cleaning mechanism (5) comprises a cleaning screw (51) rotatably mounted on a mounting plate (11) and a cleaning guide rod (52) fixedly connected to the mounting plate (11); a movable plate (53) is arranged on the conveyor (1); the cleaning screw (51) and the cleaning guide rod (52) are both inserted into the movable plate (53); the cleaning screw (51) and the movable plate (53) are threadedly connected; a cleaning plate (54) is mounted on the movable plate (53); a cleaning sponge is fixedly connected to the cleaning plate (54); a transmission mechanism (6) is mounted on the fixed plate (12); and the driving motor (25) can drive the cleaning screw (51) to rotate through the transmission mechanism (6).

7. A display screen defect detection device according to claim 6, characterized in that: The fixing plate (12) is fixedly connected to a first fixing block (121), the driving motor (25) is fixedly connected to a second fixing block (252), the transmission mechanism (6) comprises a telescopic rod (61) rotatably mounted between the first fixing block (121) and the second fixing block (252), one end of the telescopic rod (61) is connected to an output shaft of the driving motor (25) via a bevel gear set, the other end of the telescopic rod (61) is connected to a cleaning screw (51) via a bevel gear set, the cleaning screw (51) is fixedly connected to a fourth gear (62), the fixing plate (12 ... the telescopic rod (61) is connected to an output shaft of the driving motor (25) via a bevel gear set, the other end of the telescopic rod (61) is connected to a cleaning screw (51) via a bevel gear set, the cleaning screw (51) is fixedly connected to a fourth gear (62), the fixing plate (12) is fixedly connected to a second fixing block (252), the transmission mechanism (6) comprises a telescopic rod (61) rotatably mounted between the first fixing block (121) and the second fixing block (252), the telescopic rod (61) is A first rack (63) meshing with a fourth gear (62) is slidably mounted on the plate (12), and a fourth spring (64) is fixedly connected between the first rack (63) and the fixed plate (12); the first gear (251) includes a gear ring (2511) fixedly connected to the output shaft of the drive motor (25), and a plurality of first teeth (2512) are hingedly connected to the gear ring (2511), and the hinge shafts of the plurality of first teeth (2512) are located on one side of the first teeth (2512), and the hinge shafts of the plurality of first teeth (2512) are all sleeved with torsion springs.

8. The display screen defect detection device according to claim 6, characterized in that: A second rack (55) and a third rack (56) are slidably mounted on the movable plate (53); the cleaning plate (54) is fixedly connected to the second rack (55); a spraying mechanism (7) is mounted on the third rack (56); the spraying mechanism (7) comprises a detergent storage box (71) fixedly connected to the mounting plate (11); a spraying pipe (72) is fixedly connected to the third rack (56); the detergent storage box (71) and the spraying pipe (72) are connected via a feed pipe (74); a coating roller (72) located below the spraying pipe (72) is rotatably mounted on the third rack (56). 73), the coating roller (73) is capable of contacting the display screen, a driving shaft (57) is rotatably mounted on the movable plate (53), a driving gear (58) is fixedly connected to the driving shaft (57), the driving gear (58) is capable of meshing with the second rack (55) and the third rack (56) at the same time, the second rack (55) and the third rack (56) move in opposite directions, a driving mechanism (8) for driving the driving shaft (57) to rotate is mounted on both of the two mounting plates (11), and a sealing mechanism (9) for sealing the feeding pipe (74) is mounted in the feeding pipe (74).

9. A display screen defect detection device according to claim 8, characterized in that: The driving mechanism (8) comprises a driving rod (81) fixedly connected to a mounting plate (11); the bottom of the driving rod (81) is hingedly connected to a plurality of second teeth (82); hinge shafts in the plurality of second teeth (82) are located on a side of the second teeth (82) close to the mounting plate (11); torsion springs are sleeved on the hinge shafts in the plurality of second teeth (82); a fifth gear (83) is fixedly connected to the driving shaft (57); and the fifth gear (83) is capable of meshing with the plurality of second teeth (82).

10. A display screen defect detection method, using a display screen defect detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, place the display screen on the conveyor (1). When the display screen is conveyed to the bottom of the detection camera, start the drive motor (25). The drive motor (25) drives the clamping plate (24) to limit the display screen. S2, the driving motor (25) drives the moving plate (53) to move, and the moving plate (53) drives the coating roller (73) to apply the cleaning agent to the display screen, and the cleaning agent in the cleaning agent storage box (71) is sprayed on the coating roller (73) through the spraying pipe (72); S3, when the two opposite clamping plates (24) have completed the position limiting of the display screen, the driving motor (25) moves, so that the first gear (251) is meshed with the third gear (261), and the driving motor (25) drives the two clamping plates (24) to move away from each other; S4. When the driving motor (25) drives the clamping plate (24) to return to the initial position, the driving motor (25) is turned off, and the fourth spring (64) drives the cleaning screw (51) to rotate, so that the moving plate (53) moves in the opposite direction. At this time, the coating roller (73) is separated from the display screen, and the cleaning plate (54) contacts the display screen to wipe off the cleaning agent on the display screen.

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