Circuit board appearance inspection equipment

Abstract

The present invention relates to the technical field of circuit board detection, and discloses a circuit board appearance detection device, comprising a frame, a conveying mechanism, a detection platform and a detection piece, wherein the detection piece is arranged above the detection platform, the conveying mechanism conveys the object to be detected to the detection platform, the detection platform is provided with a clamping mechanism for fixing the object to be detected, a light isolation component is provided above the detection platform, the detection piece is connected to the light isolation component, and the light isolation component is fixedly connected to the frame; the present invention enables the circuit board to be inspected in an enclosed detection space by arranging a movable detection platform in conjunction with a light isolation cover, a slide plate and a light shielding sheet, and can completely isolate the light source from external interference. At the same time, the light isolation cover is made of translucent white soft light plastic, so that the light irradiated by the irradiation lamp to the inside of the light isolation cover is softer, thereby improving the accuracy of appearance detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of circuit board detection, and in particular relates to a circuit board appearance detection device. Background Art

[0002] PCB appearance inspection is a key step in ensuring PCB quality. Appearance inspection can promptly detect defects on the PCB, such as scratches, stains, and component misalignment, thus preventing these defects from causing larger problems in subsequent use.

[0003] When conducting circuit board appearance inspection, if shading treatment is not performed, external light will enter, affecting the accuracy of the inspection results. For some large-scale inspection equipment or production lines, most of them set up local shading hoods for specific inspection locations, or install shading plates in front of cameras or other inspection sensors to filter out light from non-inspection directions. However, the setting of such local shading hoods or shading plates still cannot completely filter out light from non-inspection directions, and it is still easy to affect the inspection accuracy of the circuit board appearance. Summary of the Invention

[0004] The purpose of the present invention is to provide a circuit board appearance inspection device with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] The present invention provides a circuit board appearance inspection device, comprising a frame, a conveying mechanism, an inspection platform, and an inspection member, wherein the inspection member is arranged above the inspection platform, the conveying mechanism conveys the object to be inspected onto the inspection platform, the inspection platform is provided with a clamping mechanism for fixing the object to be inspected, a light isolation component is provided above the inspection platform, the inspection member is connected to the light isolation component, and the light isolation component is fixedly connected to the frame;

[0007] The light isolation assembly includes a light isolation cover, an irradiation lamp is provided on the frame, an irradiation end of the irradiation lamp is attached to the surface of the light isolation cover, a slide groove is provided on the light isolation cover, a slide is slidably connected in the slide groove, the detection member is fixedly connected to the slide, the detection end of the detection member extends into the light isolation cover, both sides of the slide in the slide groove are connected to light shielding sheets, a driving assembly 1 is provided on the light isolation cover, for driving the slide to slide along the slide groove, the light shielding sheets are flexibly arranged, and the light shielding sheets are unfolded or stacked as the slide slides;

[0008] The frame is provided with a second driving component, which drives the detection platform to move toward the light shield and drives the detection platform to rotate. The upper end surface of the detection platform cooperates with the light shield, the slide plate and the light shielding sheet to form a closed detection space.

[0009] As a further optimization scheme of the present invention, the driving component 1 includes gear 1, gear 2 and a rotating motor, the gear 2 is fixedly connected to the surface of the light shield and is located on one side of the slide groove, the rotating motor is fixedly connected to the surface of the skateboard, the gear 1 is fixedly connected to the driving end of the rotating motor, and the gear 1 is engaged with gear 2.

[0010] As a further optimization solution of the present invention, the second driving assembly includes a linear driving member and a rotary driving assembly, the linear driving member drives the detection platform to move toward the light isolation cover, and the rotary driving assembly drives the detection platform to rotate;

[0011] The driving end of the linear driving member is fixedly connected to a connecting plate, and the connecting plate slides along the surface of the frame.

[0012] The rotary drive assembly includes a power motor, a synchronous wheel 1, a synchronous wheel 2, a synchronous belt, a driving gear and a passive gear. The power motor is fixedly connected to the frame, the synchronous belt is sleeved on the surfaces of the synchronous wheel 1 and the synchronous wheel 2, the synchronous wheel 1 is fixedly connected to the driving end of the power motor, the synchronous wheel 2 is rotatably connected to the frame, the driving gear is coaxially connected to the synchronous wheel 2, the passive gear is connected to one end of the detection platform, the driving gear is meshed with the passive gear, and the detection platform is rotatably connected to the surface of the connecting plate.

[0013] As a further optimization solution of the present invention, the detection platform is a cylinder with a hollow interior, and a reserved groove is opened on the upper surface of the cylinder;

[0014] The clamping mechanism includes multiple groups of clamping rollers and a drive component three. The multiple groups of clamping rollers are connected to the driving end of the drive component three. The drive component three drives the multiple groups of clamping rollers to move out of the cylinder from the reserved groove and clamp the edge of the object to be detected.

[0015] As a further optimized solution of the present invention, the conveying mechanism includes a conveyor belt and a guide plate;

[0016] The conveyor belt includes a first conveyor belt and a second conveyor belt, the first conveyor belt is installed on the frame, and the second conveyor belt is installed on the cylinder. The first conveyor belt is provided with two groups, which are respectively located at the two ends of the second conveyor belt. The first conveyor belt and the second conveyor belt form a complete conveyor line;

[0017] The guide plates are arranged on both sides of the conveyor line, and the guide plates include fixed plates and rotating plates. The fixed plates are arranged on both sides of the upper surface of the first conveyor belt and are fixedly connected to the frame. The rotating plates are arranged on both sides of the upper surface of the second conveyor belt and are rotatably connected to the frame through a rotating shaft.

[0018] A transmission assembly is provided on the rotating shaft, and the transmission assembly drives the rotating shaft to rotate, thereby driving the rotating plate to rotate. The transmission assembly is connected to the drive assembly three. While the drive assembly three drives the clamping roller to clamp the object to be detected, the drive assembly three also cooperates with the transmission assembly to drive the rotating plate to rotate.

[0019] As a further optimization solution of the present invention, the second conveyor belt is arranged in sections, and a gap is reserved between every two sections of the second conveyor belt;

[0020] After the clamping roller on the side of the object to be detected that is perpendicular to the running direction of the second conveyor belt is moved out of the reserved groove of the cylinder, the edge of the object to be detected is clamped from the gap between every two sections of the second conveyor belt.

[0021] As a further optimization solution of the present invention, a reserved hole is opened on the surface of the rotating plate to allow the clamping roller to pass through.

[0022] As a further optimization scheme of the present invention, the driving component three includes a first driving member, a second driving member, a slide, a driving gear and a driven gear. The first driving member and the second driving member are both fixedly connected to the inner bottom of the cylinder. The slide is arranged in a cross shape and fixedly connected to the driving end of the first driving member. The four ends of the slide are slidably connected with sliders. Multiple groups of clamping rollers are fixedly connected to the upper surfaces of four groups of sliders. The lower surfaces of the sliders are fixedly connected with limiting rollers. The driving gear is fixedly connected to the driving end of the second driving member. The driven gear is rotatably connected in the cylinder and meshes with the driving gear. An arc groove is provided on the surface of the driven gear, and the end of the limiting roller away from the slider passes through the arc groove.

[0023] As a further optimization solution of the present invention, a connecting block is fixedly connected to the inner bottom of the cylinder, and a mounting groove is provided on a surface of the connecting block close to the driven gear, and the driven gear is slidably connected in the mounting groove.

[0024] As a further optimization scheme of the present invention, the transmission assembly includes a sliding ring and a connecting rod, one end of the connecting rod is connected to the surface of the slide, and the other end extends to the outside of the cylinder and is connected to the sliding ring, the surface of the sliding ring is fixedly connected to a fixed block, the surface of the fixed block is provided with a through hole, the inner wall of the through hole is fixedly connected to a sliding block, the surface of the rotating shaft is provided with a limiting groove, and the sliding block slides along the limiting groove to rotate the rotating shaft.

[0025] The beneficial effects of the present invention are as follows: by setting up a movable detection platform in conjunction with a light shield, a slide plate and a light-shielding sheet, the present invention enables the circuit board to be inspected for appearance in a closed detection space, which can completely isolate the light source from external interference. At the same time, the light shield is made of translucent white soft light plastic, which makes the light from the irradiation lamp to the inside of the light shield softer, thereby improving the accuracy of appearance inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the conveyor belt structure of the present invention;

[0028] Figure 3 Schematic diagram of the light isolation assembly structure of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the second driving component of the present invention;

[0030] Figure 5 It is a schematic structural diagram of the clamping mechanism of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the transmission mechanism of the present invention;

[0032] Figure 7 It is a schematic diagram of the limiting groove structure of the present invention.

[0033] In the figure: 1. Frame; 2. Detection platform; 21. Cylinder; 3. Detection member; 4. Clamping mechanism; 41. Clamping roller; 42. First driving member; 43. Second driving member; 44. Slide; 45. Driving gear; 46. Driven gear; 47. Slider; 48. Limiting roller; 49. Arc groove; 5. Light shielding assembly; 51. Light shield; 52. Slide; 53. Shading sheet; 6. Illumination lamp; 7. Driving assembly 1; 71. Gear 1; 72. Gear 2; 73. Rotating motor; 8. Driving assembly 2; 81. Linear drive Components; 82. Power motor; 83. Synchronous wheel 1; 84. Synchronous wheel 2; 85. Synchronous belt; 86. Driving gear; 87. Passive gear; 9. Conveyor belt; 91. First conveyor belt; 92. Second conveyor belt; 10. Guide plate; 101. Fixed plate; 102. Rotating plate; 11. Rotating shaft; 12. Transmission assembly; 121. Sliding ring; 122. Connecting rod; 123. Fixed block; 124. Sliding block; 13. Connecting block; 14. Limiting groove; 141. Spiral section; 142. Straight section; 15. Connecting plate. DETAILED DESCRIPTION

[0034] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0035] like Figures 1 to 3The partial structure shown is a circuit board appearance inspection device, including a frame 1, a conveying mechanism, an inspection platform 2 and an inspection member 3. The inspection member 3 is arranged above the inspection platform 2. The conveying mechanism conveys the object to be inspected to the inspection platform 2. The inspection platform 2 is provided with a clamping mechanism 4 for fixing the object to be inspected. A light isolation component 5 is provided above the inspection platform 2. The inspection member 3 is connected to the light isolation component 5, and the light isolation component 5 is fixedly connected to the frame 1.

[0036] The light-isolating assembly 5 includes a light-isolating cover 51. A lighting lamp 6 is provided on the frame 1. The lighting end of the lighting lamp 6 is attached to the surface of the light-isolating cover 51. A slide groove is provided on the light-isolating cover 51. A slide plate 52 is slidably connected in the slide groove. The detection member 3 is fixedly connected to the slide plate 52. The detection end of the detection member 3 extends into the light-isolating cover 51. Both sides of the slide plate 52 in the slide groove are connected to light-shielding sheets 53. The light-isolating cover 51 is provided with a driving assembly 7 for driving the slide plate 52 to slide along the slide groove. The light-shielding sheet 53 is flexibly arranged and is unfolded or stacked as the slide plate 52 slides.

[0037] A driving assembly 2 8 is provided on the frame 1, which drives the detection platform 2 to move toward the light shield 51 and drives the detection platform 2 to rotate at the same time. The upper end surface of the detection platform 2 cooperates with the light shield 51, the slide 52 and the light shielding sheet 53 to form a closed detection space.

[0038] In this embodiment, the detection component 3 is a camera; the light shield 51 is hemispherical and made of translucent white soft light plastic.

[0039] It should be noted that by providing the flexible light shielding sheet 53, when the detection element 3 performs appearance inspection on the object to be inspected (circuit board), light in non-detection directions will not enter the light shield 51 through the slide groove of the light shield 51, thereby preventing external light from affecting the inspection.

[0040] The light shielding sheet 53 can be made of cloth or plastic. The material of the cloth is not limited as long as it can block the external light source. The plastic can be made of the same material as the light shield 51, or can be made of opaque plastic. The two ends of the light shielding sheet 53 perpendicular to the movement direction of the slide 52 are respectively fixedly connected to the surface of the slide 52 and the inner wall of the slide groove. When the light shielding sheet 53 is made of cloth, the corresponding two sides of the light shielding sheet 53 (the two sides corresponding to the movement direction of the slide 52) can be connected to the slide groove in a manner similar to installing a curtain. When the light shielding sheet 53 is made of plastic, the light shielding sheet 53 can be folded and can be installed in a manner similar to installing a folding door.

[0041] In actual use, the light emitted by the irradiation lamp 6 is directed toward the circuit board through the light shield 51. This arrangement makes the light emitted by the irradiation lamp 6 toward the circuit board softer and does not generate reflected light.

[0042] Furthermore, the driving component 7 includes gear 1 71, gear 2 72 and a rotating motor 73. Gear 2 72 is fixedly connected to the surface of the light shield 51 and is located on one side of the slide groove. The rotating motor 73 is fixedly connected to the surface of the slide 52. Gear 1 71 is fixedly connected to the driving end of the rotating motor 73. Gear 1 71 is meshed with gear 2 72.

[0043] It should be noted that the rotating motor 73 drives gear 1 71 and cooperates with gear 2 72, so that the slide 52 slides along the slide groove, thereby moving the detection part 3. During the movement of the slide 52, the shading sheet 53 on one side of the slide 52 will be squeezed together, and the shading sheet 53 on the other side will be stretched out. In this way, external light sources can be prevented from entering from the slide groove.

[0044] refer to Figure 1 and Figure 4 In the partial structure shown, the second drive assembly 8 includes a linear drive member 81 and a rotary drive assembly. The linear drive member 81 drives the detection platform 2 to move toward the light shield 51, and the rotary drive assembly drives the detection platform 2 to rotate;

[0045] The driving end of the linear driving member 81 is fixedly connected to the connecting plate 15 , and the connecting plate 15 slides along the surface of the frame 1 .

[0046] The rotation drive assembly includes a power motor 82, a synchronous wheel 1 83, a synchronous wheel 2 84, a synchronous belt 85, a driving gear 86 and a driven gear 87. The power motor 82 is fixedly connected to the frame 1. The synchronous belt 85 is sleeved on the surfaces of the synchronous wheel 1 83 and the synchronous wheel 2 84. The synchronous wheel 1 83 is fixedly connected to the driving end of the power motor 82. The synchronous wheel 2 84 is rotatably connected to the frame 1. The driving gear 86 is coaxially connected to the synchronous wheel 2 84. The driven gear 87 is connected to one end of the detection platform 2. The driving gear 86 is meshed with the driven gear 87. The detection platform 2 is rotatably connected to the surface of the connecting plate 15.

[0047] It should be noted that the synchronous wheel 1 83 is smaller than the synchronous wheel 2 84 . Setting the synchronous wheel 1 83 and the synchronous wheel 2 84 of different sizes can change the speed and torque of the power motor 82 .

[0048] The linear driving member 81 is any mechanical structure that can drive the detection platform 2 to move linearly, and specifically, it can be an electric push rod, a hydraulic cylinder, an air cylinder, a screw mechanism, etc.

[0049] In actual use, the driving component 7 can drive the detection member 3 to move, and the rotation driving component can drive the detection platform 2 to rotate. Through the cooperation of the two, the appearance of the circuit board can be inspected at various angles.

[0050] refer to Figures 5 to 7In the partial structure shown, the detection platform 2 is a cylinder 21 with a hollow interior, and a reserved groove is opened on the upper surface of the cylinder 21;

[0051] The clamping mechanism 4 includes multiple groups of clamping rollers 41 and a drive component three. The multiple groups of clamping rollers 41 are all connected to the driving end of the drive component three. The drive component three drives the multiple groups of clamping rollers 41 to move out of the reserved groove into the cylinder 21 and clamp the edge of the object to be detected.

[0052] Furthermore, the conveying mechanism includes a conveyor belt 9 and a guide plate 10;

[0053] The conveyor belt 9 includes a first conveyor belt 91 and a second conveyor belt 92. The first conveyor belt 91 is installed on the frame 1, and the second conveyor belt 92 is installed on the cylinder 21. The first conveyor belt 91 is provided with two groups, which are respectively located at the two ends of the second conveyor belt 92. The first conveyor belt 91 and the second conveyor belt 92 form a complete conveyor line.

[0054] The guide plates 10 are provided on both sides of the conveyor line. The guide plates 10 include a fixed plate 101 and a rotating plate 102. The fixed plates 101 are provided on both sides of the upper surface of the first conveyor belt 91 and are fixedly connected to the frame 1. The rotating plates 102 are provided on both sides of the upper surface of the second conveyor belt 92 and are rotatably connected to the frame 1 through the rotating shaft 11.

[0055] A transmission assembly 12 is provided on the rotating shaft 11. The transmission assembly 12 drives the rotating shaft 11 to rotate, thereby driving the rotating plate 102 to rotate. The transmission assembly 12 is connected to the driving assembly three. While the driving assembly three drives the clamping roller 41 to clamp the object to be detected, the driving assembly three also cooperates with the transmission assembly 12 to drive the rotating plate 102 to rotate.

[0056] It should be noted that the second gear 72 is a minor arc-shaped gear, which fits the surface of the light shield 51;

[0057] The arrangement of the guide plate 10 can limit the movement of the circuit board so that the position of the circuit board will not shift during the conveying process of the conveyor belt 9 .

[0058] Furthermore, the second conveyor belt 92 is arranged in sections, and a gap is reserved between each two sections of the second conveyor belt;

[0059] After the clamping roller 41 on the side of the object to be inspected perpendicular to the running direction of the second conveyor belt 92 moves out of the reserved groove of the cylinder 21, it clamps the edge of the object to be inspected from the gap between each two sections of the second conveyor belt 92.

[0060] In this embodiment, the second conveyor belt 92 only needs to be provided with three sections.

[0061] It should be noted that the provision of the second conveyor belt 92 eliminates the need for a robotic arm or a push plate to push the circuit board after the circuit board has completed appearance inspection, thereby making the transportation of the circuit board more convenient.

[0062] Furthermore, a reserved hole is opened on the surface of the rotating plate 102 to allow the clamping roller 41 to pass through.

[0063] It should be noted that the provision of the reserved hole can prevent the rotating plate 102 from blocking the movement of the clamping roller 41 .

[0064] Furthermore, the driving component three includes a first driving member 42, a second driving member 43, a slide 44, a driving gear 45 and a driven gear 46. The first driving member 42 and the second driving member 43 are both fixedly connected to the inner bottom of the cylinder 21. The slide 44 is arranged in a cross shape and fixedly connected to the driving end of the first driving member 42. The four ends of the slide 44 are slidably connected with sliders 47. Multiple groups of clamping rollers 41 are fixedly connected to the upper surfaces of four groups of sliders 47. The lower surfaces of the sliders 47 are fixedly connected with limiting rollers 48. The driving gear 45 is fixedly connected to the driving end of the second driving member 43. The driven gear 46 is rotatably connected in the cylinder 21 and meshes with the driving gear 45. An arc groove 49 is opened on the surface of the driven gear 46. The end of the limiting roller 48 away from the slider 47 passes through the arc groove 49.

[0065] In this embodiment, two clamping rollers 41 are provided on each slider 47 , that is, two clamping rollers 41 are provided on each side of the circuit board.

[0066] Furthermore, a connecting block 13 is fixedly connected to the inner bottom of the cylinder 21 , and a mounting groove is formed on a surface of the connecting block 13 close to the driven gear 46 , and the driven gear 46 is slidably connected in the mounting groove.

[0067] It should be noted that a through slot is formed on the surface of the driven gear 46 , and the driving end of the first driving member 42 can pass through the through slot to drive the slideway 44 .

[0068] Furthermore, the transmission assembly 12 includes a sliding ring 121 and a connecting rod 122. One end of the connecting rod 122 is connected to the surface of the slide 44, and the other end extends to the outside of the cylinder 21 and is connected to the sliding ring 121. The surface of the sliding ring 121 is fixedly connected to a fixed block 123. A through hole is provided on the surface of the fixed block 123. A sliding block 124 is fixedly connected to the inner wall of the through hole. A limiting groove 14 is provided on the surface of the rotating shaft 11. The sliding block 124 slides along the limiting groove 14 to rotate the rotating shaft 11.

[0069] Specifically, the limiting groove 14 includes a spiral section 141 and a straight section 142 . The spiral section 141 is located near the bottom end of the rotating shaft 11 .

[0070] In actual use, the first conveyor belt 91 conveys the circuit board to the second conveyor belt 92. At this time, the first driving member 42 and the second driving member 43 are started at the same time. The first driving member 42 drives the slide 44 to drive the clamping roller 41 to move upward. The second driving member 43 drives the driven gear 46 to rotate. Under the restriction of the arc groove 49, the slider 47 moves along the slide 44, so that the multiple groups of clamping rollers 41 clamp the circuit board.

[0071] When the first driving member 42 drives the slide 44 to drive the clamping roller 41 to move upward, the connecting rod 122 connected to the slide 44 drives the sliding ring 121 to move up along the surface of the cylinder 21, and the sliding ring 121 drives the fixed block 123 to move upward. With the cooperation of the limiting groove 14 and the sliding block 124, the rotating plate 102 will be driven to rotate, so that the rotating plate 102 is away from the circuit board. At this time, the linear driving member 81 is started to move the entire cylinder 21 upward, so that the upper surface of the cylinder 21 is in contact with the lower end of the light-isolating cover 51, thereby forming a completely light-isolating space (i.e., a closed detection space).

[0072] It should be noted that by opening the rotating plates 102 on both sides of the circuit board, the field of view of the camera when photographing the circuit board is widened;

[0073] When the linear driving member 81 drives the cylinder 21 to move upward as a whole, the sliding block 124 slides to the straight section 142 of the limiting groove 14 and moves upward along the straight section 142 .

[0074] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A circuit board appearance inspection device, characterized in that: The device comprises a frame, a conveying mechanism, a detection platform and a detection element, wherein the detection element is arranged above the detection platform, the conveying mechanism conveys the object to be detected to the detection platform, the detection platform is provided with a clamping mechanism for fixing the object to be detected, a light isolation component is provided above the detection platform, the detection element is connected to the light isolation component, and the light isolation component is fixedly connected to the frame; The light isolation assembly includes a light isolation cover, an irradiation lamp is provided on the frame, an irradiation end of the irradiation lamp is attached to the surface of the light isolation cover, a slide groove is provided on the light isolation cover, a slide is slidably connected in the slide groove, the detection member is fixedly connected to the slide, the detection end of the detection member extends into the light isolation cover, both sides of the slide in the slide groove are connected to light shielding sheets, a driving assembly 1 is provided on the light isolation cover, for driving the slide to slide along the slide groove, the light shielding sheets are flexibly arranged, and the light shielding sheets are unfolded or stacked as the slide slides; The frame is provided with a second driving assembly, which drives the detection platform to move toward the light shield and drives the detection platform to rotate. The upper end surface of the detection platform cooperates with the light shield, the slide plate and the light shielding sheet to form a closed detection space; The detection platform is a cylinder with a hollow interior, and a reserved groove is opened on the upper surface of the cylinder; The clamping mechanism includes multiple groups of clamping rollers and a drive assembly three, wherein the multiple groups of clamping rollers are connected to the drive end of the drive assembly three, and the drive assembly three drives the multiple groups of clamping rollers to move out of the cylinder from the reserved groove and clamp the edge of the object to be detected; The conveying mechanism includes a conveyor belt and a guide plate; The conveyor belt includes a first conveyor belt and a second conveyor belt, the first conveyor belt is installed on the frame, and the second conveyor belt is installed on the cylinder. The first conveyor belt is provided with two groups, which are respectively located at the two ends of the second conveyor belt. The first conveyor belt and the second conveyor belt form a complete conveyor line; The guide plates are arranged on both sides of the conveyor line, and the guide plates include fixed plates and rotating plates. The fixed plates are arranged on both sides of the upper surface of the first conveyor belt and are fixedly connected to the frame. The rotating plates are arranged on both sides of the upper surface of the second conveyor belt and are rotatably connected to the frame through a rotating shaft. A transmission assembly is provided on the rotating shaft, and the transmission assembly drives the rotating shaft to rotate, thereby driving the rotating plate to rotate. The transmission assembly is connected to the driving assembly 3. While the driving assembly 3 drives the clamping roller to clamp the object to be detected, the driving assembly 3 also cooperates with the transmission assembly to drive the rotating plate to rotate; The second conveyor belt is arranged in sections, with a gap reserved between every two sections of the second conveyor belt; After the clamping roller on the side of the object to be inspected that is perpendicular to the running direction of the second conveyor belt is moved out of the reserved groove of the cylinder, the edge of the object to be inspected is clamped from the gap between each two sections of the second conveyor belt; The surface of the rotating plate is provided with a reserved hole for the clamping roller to pass through; The driving assembly three includes a first driving member, a second driving member, a slide, a driving gear and a driven gear, the first driving member and the second driving member are both fixedly connected to the inner bottom of the cylinder, the slide is arranged in a cross shape and fixedly connected to the driving end of the first driving member, the four ends of the slide are slidably connected to sliders, multiple groups of clamping rollers are fixedly connected to the upper surfaces of the four groups of sliders, the lower surfaces of the sliders are fixedly connected to the limiting rollers, the driving gear is fixedly connected to the driving end of the second driving member, the driven gear is rotatably connected in the cylinder and meshes with the driving gear, an arc groove is opened on the surface of the driven gear, and the end of the limiting roller away from the slider passes through the arc groove; A connecting block is fixedly connected to the inner bottom of the cylinder, and a mounting groove is provided on a surface of the connecting block close to the driven gear, and the driven gear is slidably connected in the mounting groove; The transmission assembly includes a sliding ring and a connecting rod, one end of the connecting rod is connected to the surface of the slideway, and the other end extends to the outside of the cylinder and is connected to the sliding ring. A fixed block is fixedly connected to the surface of the sliding ring, a through hole is provided on the surface of the fixed block, and a sliding block is fixedly connected to the inner wall of the through hole. A limiting groove is provided on the surface of the rotating shaft, and the sliding block slides along the limiting groove to rotate the rotating shaft.

2. The circuit board appearance inspection device according to claim 1, characterized in that: The driving component 1 includes gear 1, gear 2 and a rotating motor. The gear 2 is fixedly connected to the surface of the light shield and is located on one side of the slide. The rotating motor is fixedly connected to the surface of the skateboard. The gear 1 is fixedly connected to the driving end of the rotating motor. The gear 1 is engaged with the gear 2.

3. The circuit board appearance inspection device according to claim 1, characterized in that: The second driving assembly includes a linear driving member and a rotary driving assembly, wherein the linear driving member drives the detection platform to move toward the light shield, and the rotary driving assembly drives the detection platform to rotate; The driving end of the linear drive member is fixedly connected to a connecting plate, and the connecting plate slides along the surface of the frame; The rotary drive assembly includes a power motor, a synchronous wheel 1, a synchronous wheel 2, a synchronous belt, a driving gear and a passive gear. The power motor is fixedly connected to the frame, the synchronous belt is sleeved on the surfaces of the synchronous wheel 1 and the synchronous wheel 2, the synchronous wheel 1 is fixedly connected to the driving end of the power motor, the synchronous wheel 2 is rotatably connected to the frame, the driving gear is coaxially connected to the synchronous wheel 2, the passive gear is connected to one end of the detection platform, the driving gear is meshed with the passive gear, and the detection platform is rotatably connected to the surface of the connecting plate.

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