A motor drive board visual defect detection device

Abstract

The present invention belongs to the field of circuit board detection, and specifically is a motor drive board visual defect detection device, including a platform body, a protective box fixedly connected to the platform body, a placement plate arranged in the protective box, two sets of cover plates rotatably connected to the top of the protective box, a transparent plate fixedly connected to the cover plate, a lifting mechanism arranged at the bottom end of the cover plate, the lifting mechanism is used to enable a drive plate placed on the placement plate to move upward when the cover plate is opened, so as to facilitate taking the drive plate out of the protective box, and a clamping mechanism is arranged at the bottom end of the placement plate; through the structural design of the lifting mechanism, the drive plate is placed on the placement plate, and detection is performed inside the protective box, which can reduce the adhesion of dust and debris to the drive plate during detection, and when the cover plate is opened, the placement plate can drive the drive plate to move upward, so as to facilitate the detection personnel to take the drive plate placed on the placement plate out of the protective box.

Description

Technical Field

[0001] The invention relates to the field of circuit board detection, and in particular to a motor drive board visual defect detection device. Background Art

[0002] The motor driver board integrates electronic components and circuits for controlling the operation of the motor. In order to promptly detect defects and problems on the driver board, a visual defect detection device is used to inspect the motor driver board.

[0003] According to the patent document CN202222740872.4, a PCB board solder joint visual defect detection platform is proposed, including a platform body, an industrial camera and a clamping mechanism, the platform body includes a base and a top platform, the base and the top platform are connected to form an integral body, the industrial camera is installed on the side of the top platform facing the base, the clamping mechanism is installed on the side wall of the base, the clamping mechanism includes a lifting screw, a rotating mechanism, a first clamping jaw and a second clamping jaw, the lifting screw is vertically installed on the side wall of the base, the rotating mechanism is connected to the output end of the lifting screw, and the first clamping jaw and the second clamping jaw are mirror-symmetrically installed on both sides of the output end of the rotating mechanism. The lifting screw is used to drive the rotating mechanism to rise and fall synchronously, adjust the height of the PCB board, ensure that the industrial camera can smoothly identify the PCB board for detection, and ensure the detection accuracy.

[0004] However, the visual defect detection platform in the above technology has a problem that the driver board is exposed to the outside world. External dust and debris may adhere to the driver board during the detection process, and smaller components on the driver board may be blocked by dust and debris. After the visual camera obtains the image of the driver board, it will be judged and processed by the computer. Therefore, smaller dust and debris may affect the computer processing structure, thereby reducing the detection accuracy. Therefore, a motor driver board visual defect detection device is proposed to address the above problems. Summary of the invention

[0005] In order to solve the problem of the visual defect detection platform in the above technology, since the driving board is exposed to the outside world, dust and debris from the outside may adhere to the driving board during the detection process, and smaller components on the driving board may be blocked by dust and debris. After the visual camera obtains the image of the driving board, it will be judged and processed by the computer. Therefore, smaller dust and debris may affect the computer processing structure, thereby reducing the detection accuracy. The present invention proposes a motor driving board visual defect detection device.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a motor drive board visual defect detection device described in the present invention includes a platform body, a protective box is fixedly connected to the platform body, a placing plate is arranged in the protective box, two groups of cover plates are rotatably connected to the top of the protective box, a transparent plate is fixedly connected to the cover plate, a lifting mechanism is arranged at the bottom end of the cover plate, the lifting mechanism is used to enable the drive plate placed on the placing plate to move upward when the cover plate is opened, so as to facilitate the drive plate to be taken out from the inside of the protective box, a clamping mechanism is arranged at the bottom end of the placing plate, the clamping mechanism is used to clamp and fix the side of the drive plate placed on the placing plate, to ensure that the drive plate will not deviate on the placing plate when moving.

[0007] Preferably, the lifting mechanism includes an arc-shaped plate, which is fixedly connected to the bottom end of the cover plate, and the arc-shaped plate is meshed with a driving gear, and the driving gear is fixedly connected to the first gear, and a pulley is fixedly connected to the side of the first gear away from the driving gear, and the pulleys are provided with two groups, and the bottom pulley is fixedly connected to the second gear, and belts are sleeved on the two groups of pulleys, and the driving gear, the first gear, the pulley and the second gear are all rotatably connected to the support frame, and the support frame is fixedly connected to the inner wall of the protective box, the second gear is meshed with the rack, and the rack is fixedly connected to the connecting plate, and the top of the connecting plate is fixedly connected to the placement plate, and the connecting plate is inserted into the inside of the slot, and the slot is opened on the support base, and the support base is fixedly connected to the inner wall of the protective box.

[0008] Preferably, the clamping mechanism includes six groups of top blocks, the top blocks abut against the protrusions, the cross-section of the protrusions is trapezoidal in design, the protrusions are fixedly connected to the top of the supporting base, the top of the protrusions is inserted in the circular groove, the circular groove is opened at the bottom end of the placement plate, the side of the top block away from the protrusions is fixedly connected with a return spring and an insertion rod, the return spring is sleeved on the insertion rod, the side of the return spring away from the top block is fixedly connected to the fixed block, the fixed block is fixedly connected to the bottom end of the placement plate, the insertion rod passes through the fixed block, the side of the insertion rod away from the top block is fixedly connected with the clamping plate, and the top of the clamping plate is trapezoidal in design.

[0009] Preferably, the bottom end of the arc plate abuts against the moving block, and the bottom end of the moving block is hollow in design. The bottom end of the moving block is fixedly connected with a connecting spring, and the bottom end of the connecting spring is fixedly connected to the inner wall of the movable groove. The movable groove is opened inside the protective box, and the moving block is slidably connected inside the movable groove. A circular hole is opened at the bottom end of the moving block, and the circular hole is located directly above the abutment block. The abutment block is fixedly connected to a connecting rod, and the connecting rod is fixedly connected to the rack on the side away from the abutment block.

[0010] Preferably, a guide rod is inserted into the middle of the connecting rod, the bottom end of the guide rod is fixedly connected to the inner wall of the protection box, and the guide rod is designed in a T shape.

[0011] Preferably, six groups of spring grooves are opened inside the support base, the bottom ends of the inner walls of the spring grooves are fixedly connected with support springs, and the top ends of the support springs are fixedly connected to the bottom end of the placement plate.

[0012] Preferably, long grooves are provided on both the front and rear sides of the cover plate, and the long grooves are rectangular in design.

[0013] Preferably, both left and right sides of the protection box are fixedly connected with limit plates, the limit plates are arc-shaped, and the limit plates fit the bottom end of the rotating shaft of the cover plate.

[0014] Preferably, the connecting plate and the slot are both L-shaped, and the connecting plate fits closely to the inner wall of the slot.

[0015] Preferably, a plug post is fixedly connected to the bottom end of the connecting plate, and the plug post is inserted into the inside of the guide hole, and the guide hole is provided on the inner wall of the slot.

[0016] The present invention is beneficial in that:

[0017] 1. The present invention adopts the structural design of the lifting mechanism, and the driving board is placed on the placement plate, and the inspection is carried out inside the protective box, which can reduce the adhesion of dust and debris on the driving board during inspection. When the cover plate is opened, the placement plate can drive the driving board to move upward, so that the inspector can take the driving board placed on the placement plate out of the protective box, thereby solving the problem of visual defect inspection platform in the prior art. Since the driving board is exposed to the outside world, dust and debris from the outside may adhere to the driving board during the inspection process, and smaller components on the driving board may be blocked by dust and debris. After the visual camera obtains the image of the driving board, it will be judged and processed by the computer. Therefore, smaller dust and debris may affect the computer processing structure, thereby reducing the detection accuracy.

[0018] 2. Through the structural design of the clamping mechanism of the present invention, when the bottom end of the placement plate abuts against the supporting base, the protrusion fixed on the supporting base will push the top block to move, and the clamping plate will move in the direction away from the placement plate, ensuring that the clamping plate will not block the driving plate when the camera acquires the image of the driving plate, and when the placement plate moves upward, the clamping plate can be reset under the action of the reset spring, thereby clamping the side of the driving plate on the placement plate, ensuring that the driving plate will not deviate on the placement plate during the movement inside the protective box.

[0019] 3. Through the structural design of the moving block of the present invention, when the placement plate moves upward to the maximum height inside the protection box, the abutment block fixed on the connecting rod will be inserted into the circular hole and abut against the moving block. The moving block abuts against the inner wall of the protection box, so that the abutment block cannot continue to move upward, thereby preventing the placement plate from continuing to move upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the protection box of the present invention;

[0023] Figure 3 It is a schematic cross-sectional structure diagram of the protection box of the present invention;

[0024] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0025] Figure 5 It is a schematic diagram of the connection structure of the bottom end of the cover plate of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure inside the protection box of the present invention;

[0027] Figure 7 A schematic diagram of the connection structure between the first gear and the second gear of the present invention;

[0028] Figure 8 It is a schematic diagram of the bottom structure of the placement plate of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the top of the support base of the present invention;

[0030] Fig.10 It is a schematic diagram of the connection structure of the rack of the present invention;

[0031] Fig.11 It is a structural schematic diagram of the moving block of the present invention.

[0032] In the figure: 1. platform body; 20. protection box; 21. cover plate; 22. transparent plate; 23. arc plate; 24. driving gear; 25. first gear; 26. belt; 27. pulley; 28. second gear; 29. ​​rack; 30. support frame; 31. connecting plate; 32. slot; 33. supporting base; 34. placing plate; 35. clamping plate; 36. fixing block; 37. reset spring; 38. circular groove; 39. top block; 40. plug rod; 41. protrusion; 42. support spring; 43. spring groove; 44. guide hole; 45. plug column; 46. connecting rod; 47. abutment block; 48. guide rod; 49. circular hole; 50. moving block; 51. connecting spring; 52. limit plate; 53. long groove; 54. movable groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] See also Figure 1 - Fig.11 As shown, a motor drive plate visual defect detection device includes a platform body 1, a protection box 20 is fixedly connected to the platform body 1, a placement plate 34 is arranged in the protection box 20, two sets of cover plates 21 are rotatably connected to the top of the protection box 20, a transparent plate 22 is fixedly connected to the cover plate 21, a lifting mechanism is arranged at the bottom end of the cover plate 21, the lifting mechanism is used to enable the drive plate placed on the placement plate 34 to move upward when the cover plate 21 is opened, so as to facilitate the drive plate to be taken out from the protection box 20, a clamping mechanism is arranged at the bottom end of the placement plate 34, the clamping mechanism is used to clamp and fix the side of the drive plate placed on the placement plate 34, to ensure that the drive plate will not deviate on the placement plate 34 when moving;

[0036] Further, the lifting mechanism includes an arc plate 23, which is fixedly connected to the bottom end of the cover plate 21, the arc plate 23 is meshed with a driving gear 24, the driving gear 24 is fixedly connected to a first gear 25, a side of the first gear 25 away from the driving gear 24 is fixedly connected with a pulley 27, two groups of pulleys 27 are provided, the bottom pulley 27 is fixedly connected to the second gear 28, and the two groups of pulleys 27 are sleeved with belts 26, the driving gear 24, the first gear 25, the pulley 27 and the second gear 28 are all rotatably connected to a support frame 30, the support frame 30 is fixedly connected to the inner wall of the protective box 20, the second gear 28 is meshed with a rack 29, the rack 29 is fixedly connected to a connecting plate 31, the top of the connecting plate 31 is fixedly connected to a placement plate 34, the connecting plate 31 is inserted into the inside of a slot 32, the slot 32 is provided on a support base 33, and the support base 33 is fixedly connected to the inner wall of the protective box 20;

[0037] Through the structural design of the lifting mechanism, the driving plate is placed on the placement plate 34, and the inspection is carried out inside the protection box 20, which can reduce the adhesion of dust and debris on the driving plate during inspection, and when the cover plate 21 is opened, the placement plate 34 can drive the driving plate to move upward, so that the inspector can take out the driving plate placed on the placement plate 34 from the inside of the protection box 20. During operation, the protection box 20 is fixed on the platform body 1 and the top of the protection box 20 rotates with two sets of cover plates 21, and a transparent plate 22 is fixed on the cover plate 21. The transparent plate 22 ensures that the camera on the platform body 1 can normally shoot the driving plate placed on the placement plate 34. When the driving plate is to be taken out from the inside of the protection box 20, the cover plate 21 is first rotated to both sides. During the rotation of the cover plate 21, the arc plate 23 fixed at the bottom end of the cover plate 21 will move along the center of the circle of the rotating shaft of the cover plate 21. When the arc plate 23 moves, it will drive the driving gear 24 to rotate, and the driving gear 24, the first gear 25 and a set of pulleys The second gear 28 meshes with the rack 29, thereby driving the rack 29 to move upward. The rack 29 is connected to the connecting plate 31 and the top of the connecting plate 31 is fixed on the bottom end of the placement plate 34. Therefore, the rack 29 will drive the placement plate 34 to move upward, so that when the cover plate 21 is opened, the inspection personnel do not need to reach into the interior of the protection box 20, and can take out the driving plate placed on the placement plate 34 from the inside of the protection box 20, thereby making the removal operation more convenient. Similarly, when the driving plate is to be inspected, the cover plate 21 is first opened, and then the driving plate is placed on the placement plate 34, and finally the cover plate 21 is rotated until the cover plate 21 closes the top of the protection box 20, and the placement plate 34 will drive the driving plate to move downward until the bottom end of the placement plate 34 abuts against the support base 33.

[0038] Further, the clamping mechanism includes six groups of top blocks 39, the top blocks 39 abut against the protrusions 41, the cross-section of the protrusions 41 is of trapezoidal design, the protrusions 41 are fixedly connected to the top of the support base 33, the top of the protrusions 41 are inserted into the circular groove 38, the circular groove 38 is provided at the bottom end of the placement plate 34, the side of the top block 39 away from the protrusions 41 is fixedly connected with a return spring 37 and a plug rod 40, the return spring 37 is sleeved on the plug rod 40, the side of the return spring 37 away from the top block 39 is fixedly connected to the fixed block 36, the fixed block 36 is fixedly connected to the bottom end of the placement plate 34, the plug rod 40 passes through the fixed block 36, the side of the plug rod 40 away from the top block 39 is fixedly connected with the clamping plate 35, the top of the clamping plate 35 is of trapezoidal design;

[0039] Through the structural design of the clamping mechanism, when the bottom end of the placement plate 34 abuts against the support base 33, the protrusion 41 fixed on the support base 33 will push the top block 39 to move, and the clamping plate 35 will move in the direction away from the placement plate 34 to ensure that the clamping plate 35 will not block the driving plate when the camera acquires the image of the driving plate, and when the placement plate 34 moves upward, the clamping plate 35 can be reset under the action of the reset spring 37, thereby clamping the side of the driving plate on the placement plate 34 to ensure that the driving plate will not deviate on the placement plate 34 during the movement inside the protective box 20. During operation, six groups of top blocks 39 slide on the bottom end of the placement plate 34, and the top blocks 39 are all fixed with reset springs 37 and insertion rods 40. When the bottom end of the placement plate 34 is not When abutting against the support base 33, the clamping plate 35 fixed on the insertion rod 40 can abut against the side of the placement plate 34 under the action of the return spring 37. The size of the placement plate 34 is the same as that of the driving plate. Therefore, when the edge of the driving plate is aligned with the edge of the placement plate 34, the top part of the clamping plate 35 can clamp and fix the driving plate, so that the driving plate will not move easily during the movement of the placement plate 34. When the bottom end of the placement plate 34 abuts against the support base 33, the protrusion 41 fixed on the support base 33 will be inserted into the circular groove 38 and push the top block 39 to move, and the clamping plate 35 fixed on the insertion rod 40 will move away from the placement plate 34, and the top end of the clamping plate 35 is designed in a trapezoidal shape to facilitate the placement of the driving plate on the placement plate 34.

[0040] Furthermore, the bottom end of the arc plate 23 abuts against the moving block 50, and the bottom end of the moving block 50 is hollowed out. The bottom end of the moving block 50 is fixedly connected with a connecting spring 51, and the bottom end of the connecting spring 51 is fixedly connected to the inner wall of the movable groove 54. The movable groove 54 is provided inside the protective box 20, and the moving block 50 is slidably connected inside the movable groove 54. A circular hole 49 is provided at the bottom end of the moving block 50, and the circular hole 49 is located directly above the abutment block 47. The abutment block 47 is fixedly connected to the connecting rod 46, and the side of the connecting rod 46 away from the abutment block 47 is fixedly connected to the rack 29;

[0041] During operation, in the process of rotating the cover plate 21, the rack 29 will drive the placement plate 34 to move upward, a connecting rod 46 is fixed to the rack 29, and an abutment block 47 is fixed to the connecting rod 46. When the abutment block 47 moves upward to the position at the bottom end of the moving block 50, the abutment block 47 continues to move upward and will first abut against the moving block 50, and the connecting spring 51 fixed at the bottom end of the moving block 50 will be stretched. When the moving block 50 moves to the maximum position inside the movable groove 54, the moving block 50 will abut against the inner wall of the movable groove 54. Then, the abutment block 47 cannot move upward any further, thereby preventing the placement plate 34 from moving further. Holes corresponding to the shape of the bottom end of the arc plate 23 are provided on both sides of the left and right sides of the protective box 20, so that when the cover plate 21 is closed, the bottom end of the arc plate 23 will not abut against the inner wall of the protective box 20. When the arc plate 23 is pulled out of the hole on the protective box 20, the hole can be blocked by moving the moving block 50 upward, thereby preventing large-sized debris from entering the interior of the protective box 20 through the hole on the protective box 20.

[0042] Furthermore, a guide rod 48 is inserted into the middle of the connecting rod 46, and the bottom end of the guide rod 48 is fixedly connected to the inner wall of the protection box 20, and the guide rod 48 is T-shaped;

[0043] When working, the guide rod 48 is T-shaped and inserted on the connecting rod 46. It can guide the movement of the connecting rod 46 and improve the supporting strength of the connecting rod 46 so that the connecting rod 46 will not bend easily when the abutment block 47 abuts against the moving block 50.

[0044] Furthermore, six groups of spring grooves 43 are provided inside the support base 33, and the bottom ends of the inner walls of the spring grooves 43 are fixedly connected with support springs 42, and the top ends of the support springs 42 are fixedly connected with the bottom ends of the placement plates 34;

[0045] During operation, six groups of spring grooves 43 are opened in the area between two adjacent groups of top blocks 39, and the support spring 42 is connected to the bottom end of the placement plate 34, which can provide support for the bottom end of the placement plate 34, so that it can save more effort when the cover plate 21 is rotated and the rack 29 drives the placement plate 34 to move upward.

[0046] Furthermore, both the front and rear sides of the cover plate 21 are provided with long grooves 53, and the long grooves 53 are rectangular in design;

[0047] During operation, the long slot 53 is designed to be rectangular, and the cover plate 21 can be rotated by pressing the long slot 53 to facilitate opening of the cover plate 21 .

[0048] Furthermore, both left and right sides of the protection box 20 are fixedly connected with a limit plate 52, the limit plate 52 is designed in an arc shape, and the limit plate 52 fits with the bottom end of the rotating shaft of the cover plate 21;

[0049] When working, the limit plate 52 is designed to be arc-shaped and fits with the bottom end of the rotation shaft of the cover plate 21, which can limit the maximum rotation angle of the cover plate 21. During the process of rotating the cover plate 21, when the cover plate 21 abuts against the limit plate 52, the cover plate 21 cannot continue to rotate.

[0050] Embodiment 2

[0051] See also Fig. 9 and Fig.10 As shown, comparative example 1 is another embodiment of the present invention, the connecting plate 31 and the slot 32 are both L-shaped, and the connecting plate 31 fits the inner wall of the slot 32;

[0052] When working, the connecting plate 31 is designed in an L-shape, which can increase the contact area between the top of the connecting plate 31 and the placement plate 34, so as to improve the connection strength between the bottom of the placement plate 34 and the connecting plate 31. The slot 32 is also designed in an L-shape to adapt to the connecting plate 31. The connection plate 31 fits the inner wall of the slot 32, so that the stable sliding of the connecting plate 31 on the slot 32 can be guaranteed.

[0053] The bottom end of the connecting plate 31 is fixedly connected with a plug post 45, and the plug post 45 is inserted into the inside of a guide hole 44, and the guide hole 44 is opened on the inner wall of the slot 32;

[0054] During operation, the pins 45 fixed on the connecting plate 31 are inserted into the guide holes 44. The guide holes 44 and the pins 45 can guide the movement of the placement plate 34 to ensure that the placement plate 34 can move stably without significant shaking.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A motor drive board visual defect detection device, comprising a platform body (1), a protection box (20) fixedly connected to the platform body (1), a placement plate (34) arranged inside the protection box (20), two sets of cover plates (21) rotatably connected to the top of the protection box (20), a transparent plate (22) fixedly connected to the cover plate (21), characterized in that: A lifting mechanism is provided at the bottom end of the cover plate (21), and the lifting mechanism is used to enable the driving plate placed on the placement plate (34) to move upward when the cover plate (21) is opened, so as to facilitate the removal of the driving plate from the inside of the protective box (20); a clamping mechanism is provided at the bottom end of the placement plate (34), and the clamping mechanism is used to clamp and fix the side of the driving plate placed on the placement plate (34), so as to ensure that the driving plate will not deviate on the placement plate (34) when moving; The lifting mechanism comprises an arc-shaped plate (23), the arc-shaped plate (23) being fixedly connected to the bottom end of the cover plate (21), the arc-shaped plate (23) being meshed with a driving gear (24), the driving gear (24) being fixedly connected to a first gear (25), a side of the first gear (25) away from the driving gear (24) being fixedly connected to a pulley (27), two groups of pulleys (27) being provided, the bottom end of the pulley (27) being fixedly connected to a second gear (28), the two groups of pulleys (27) being sleeved with belts (26), the driving gear (24), the first gear ( 25), the pulley (27) and the second gear (28) are both rotatably connected to the support frame (30), the support frame (30) is fixedly connected to the inner wall of the protection box (20), the second gear (28) is meshed with the rack (29), the rack (29) is fixedly connected to the connecting plate (31), the top of the connecting plate (31) is fixedly connected to the placement plate (34), the connecting plate (31) is inserted into the inside of the slot (32), the slot (32) is opened on the support base (33), and the support base (33) is fixedly connected to the inner wall of the protection box (20); The clamping mechanism comprises six groups of top blocks (39), the top blocks (39) abutting against the protrusions (41), the cross section of the protrusions (41) being of trapezoidal design, the protrusions (41) being fixedly connected to the top of the support base (33), the top of the protrusions (41) being inserted into the circular groove (38), the circular groove (38) being provided at the bottom of the placement plate (34), and a return spring (37) being fixedly connected to the side of the top block (39) away from the protrusions (41) and an insertion rod (40), the return spring (37) being sleeved on the insertion rod (40), the side of the return spring (37) away from the top block (39) being fixedly connected to the fixed block (36), the fixed block (36) being fixedly connected to the bottom end of the placement plate (34), the insertion rod (40) passing through the fixed block (36), the side of the insertion rod (40) away from the top block (39) being fixedly connected to the clamping plate (35), the top end of the clamping plate (35) being of trapezoidal design; The bottom end of the arc plate (23) is in contact with the moving block (50), the bottom end of the moving block (50) is hollowed out, the bottom end of the moving block (50) is fixedly connected with a connecting spring (51), the bottom end of the connecting spring (51) is fixedly connected with the inner wall of the movable groove (54), the movable groove (54) is provided inside the protective box (20), the moving block (50) is slidably connected inside the movable groove (54), a circular hole (49) is provided at the bottom end of the moving block (50), the circular hole (49) is located directly above the abutment block (47), the abutment block (47) is fixedly connected with the connecting rod (46), and the side of the connecting rod (46) away from the abutment block (47) is fixedly connected with the rack (29).

2. The motor drive board visual defect detection device according to claim 1, characterized in that: A guide rod (48) is inserted into the middle of the connecting rod (46), the bottom end of the guide rod (48) is fixedly connected to the inner wall of the protection box (20), and the guide rod (48) is designed to be T-shaped.

3. The motor drive board visual defect detection device according to claim 2, characterized in that: Six groups of spring grooves (43) are provided inside the support base (33), the bottom ends of the inner walls of the spring grooves (43) are fixedly connected to support springs (42), and the top ends of the support springs (42) are fixedly connected to the bottom end of the placement plate (34).

4. The motor drive board visual defect detection device according to claim 1, characterized in that: Long grooves (53) are provided on both the front and rear sides of the cover plate (21), and the long grooves (53) are rectangular in design.

5. The motor drive board visual defect detection device according to claim 1, characterized in that: The left and right sides of the protection box (20) are both fixedly connected to a limit plate (52), the limit plate (52) is designed to be arc-shaped, and the limit plate (52) fits the bottom end of the rotating shaft of the cover plate (21).

6. The motor drive board visual defect detection device according to claim 1, characterized in that: The connecting plate (31) and the slot (32) are both L-shaped, and the connecting plate (31) fits closely to the inner wall of the slot (32).

7. The motor drive board visual defect detection device according to claim 6, characterized in that: The bottom end of the connecting plate (31) is fixedly connected with an inserting column (45), and the inserting column (45) is inserted into the interior of a guide hole (44), and the guide hole (44) is formed on the inner wall of the slot (32).

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