Visual inspection equipment for server production

Abstract

The invention discloses visual detection equipment for server production, and relates to the technical field of circuit board detection, the visual detection equipment comprises an optical detection machine, the optical detection machine is provided with a detection groove, the detection groove is internally provided with a supporting plate, the two sides of the supporting plate are provided with through grooves, and the center of the upper end face of the supporting plate is provided with an adsorption hole; the device further comprises a circuit board detection height adjusting mechanism and a circuit board centering limiting mechanism, the circuit board detection height adjusting mechanism comprises L-shaped plates which are symmetrically arranged, the L-shaped plates are fixedly connected to the inner side wall of the detection groove, and L-shaped grooves are formed in the sides, away from the inner wall of the detection groove, of the L-shaped plates. In the process of pushing the supporting plate to drive the circuit board to enter the optical detection machine for detection, the height of the supporting plate can be adjusted, the distance between the circuit board and a detection source in the optical detection machine can be changed, an image of the circuit board can be captured with the optimal resolution, and the definition and detail expression of the image are improved; therefore, tiny defects on the surface of the circuit board can be detected more accurately.

Description

Technical Field

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

[0002] In the server production process, visual inspection is a key link in ensuring product quality and production efficiency. Printed circuit boards are extremely important components in servers and play a core role in the normal operation of servers. After the printed circuit boards are produced, visual inspection equipment is needed to check whether there are defects such as cold solder joints, over-soldering or short circuits on the solder joints on the printed circuit boards.

[0003] Traditional optical inspection equipment usually uses a fixed detection distance, that is, the circuit board is placed in a preset position for inspection. However, this fixed-distance detection method has many limitations. First, due to the different heights of the components on the circuit board, it is difficult to ensure that the detection source can clearly capture the images of all components at a fixed distance. Especially when inspecting tall components, occlusion is prone to occur, resulting in incomplete inspection. Second, the fixed distance cannot be flexibly adjusted according to the needs of the inspection task. For small defects that require high-resolution inspection (such as cold solder joints, over-soldering or small cracks in solder joints) and the overall layout that requires large-field inspection, it is impossible to meet the requirements of inspection accuracy and efficiency at the same time. In addition, the fixed distance will also cause image distortion and distortion, affecting the accuracy of inspection. In addition, the illumination angle and intensity of the light source are difficult to optimize at a fixed distance. Overexposure is prone to occur during close-range inspection, and insufficient light source affects image quality during long-range inspection.

[0004] Therefore, the present invention proposes a visual inspection device for server production to solve the above problems. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a visual inspection device for server production, which can effectively solve the problems in the prior art.

[0007] (2) Technical solution

[0008] To achieve the above object, the object of the present invention can be achieved through the following technical solutions:

[0009] A visual inspection device for server production, including an optical inspection machine, an inspection slot is provided on the optical inspection machine, a support plate is provided in the inspection slot, through slots are provided on both sides of the support plate, an adsorption hole is provided at the center of the upper end face of the support plate, and also includes a circuit board inspection height adjustment mechanism and a circuit board centering limit mechanism, the circuit board inspection height adjustment mechanism includes symmetrically arranged L-shaped plates, the L-shaped plates are fixedly connected to the inner side walls of the inspection slot, the L-shaped plates are provided with L-shaped slots on the side away from the inner wall of the inspection slot, and moving blocks are slidably connected in the L-shaped slots, and the moving blocks are fixedly connected to the side walls of the support plate, the circuit board inspection height adjustment mechanism is used to adjust the height of the circuit board from the inspection source during the inspection process, and the circuit board centering limit mechanism is used to push the circuit board to the center of the upper end face of the support plate.

[0010] As a further solution of the present invention: the circuit board detection height adjustment mechanism also includes symmetrically arranged slide rails, the slide rails are fixedly connected to the inner side walls of the detection groove, and the slide rails are located below the L-shaped plate, and sliders are slidably connected in the slide rails, and threaded rods are threaded through the sliders, and the threaded rods are rotatably connected to the slide rails, and the sliders are rotatably connected to a lifting plate on the side away from the slide rails, and the lifting plate is rotatably connected to the lower end surface of the support plate on the end away from the slider.

[0011] As a further solution of the present invention: mounting brackets are symmetrically fixedly connected to the side walls of the support plate, pointers are fixedly connected to the mounting brackets, vertical plates are symmetrically fixedly connected to the optical inspection machine, the vertical plates are respectively located on both sides of the inspection slot, height scale bars are equidistantly fixedly connected to the side walls of the vertical plates, and the height scale bars correspond to the pointers.

[0012] As a further solution of the present invention: an air bag is fixedly connected to the interior of the support plate, and the adsorption holes are all connected to the air bag.

[0013] As a further solution of the present invention: a pressing plate is vertically slidably connected inside the supporting plate, the pressing plate is located below the airbag, a lifting column is fixedly connected to the lower end surface of the pressing plate, and the lifting column is slidably connected to the supporting plate.

[0014] As a further solution of the present invention: the lower end of the lifting column is fixedly connected to a first connecting block, the upper end surface of the first connecting block is fixedly connected to a spring, the upper end of the spring is fixedly connected to the lower end surface of the support plate, and the spring is sleeved on the outer surface of the lifting column.

[0015] As a further solution of the present invention: one side of the first connecting block is rotatably connected to a connecting plate, the connecting plate is rotatably connected to the second connecting block at one end away from the first connecting block, a sliding column is fixedly connected to the side wall of the second connecting block, the outer surface of the sliding column is slidably connected to a support plate, and the support plate is fixedly connected to the lower end surface of the support plate.

[0016] As a further solution of the present invention: the circuit board centering limiting mechanism includes symmetrically arranged limiting plates, each of the limiting plates is slidably connected between the two through slots, and the limiting plates cover the top of the adsorption hole.

[0017] As a further solution of the present invention: a connecting frame is fixedly connected to the side wall of the limiting plate, and a rack plate is fixedly connected to the side of the connecting frame away from the limiting plate. A transmission gear is meshed and connected between the two rack plates, and a rotating shaft is fixedly connected through the transmission gear, and the rotating shaft is rotatably connected to the side wall of the support plate.

[0018] As a further solution of the present invention: a torsion spring is fixedly connected to the side of the transmission gear close to the support plate, and the end of the torsion spring away from the transmission gear is fixedly connected to the side wall of the support plate, and the torsion spring is sleeved on the outer surface of the rotating shaft.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the present invention provides a visual inspection device for server production, which has the following beneficial effects:

[0021] 1. Through the circuit board detection height adjustment mechanism, when the pallet is pushed to drive the circuit board into the optical inspection machine for inspection, the height of the pallet can be adjusted, and the distance between the circuit board and the inspection source inside the optical inspection machine can be changed. This can not only capture the image of the circuit board with the best resolution, improve the clarity and detail of the image, and thus more accurately detect tiny defects on the surface of the circuit board, such as cold solder joints, over-soldering or tiny cracks in the solder joints, but also the appropriate distance can reduce the aberration and distortion of the image, ensure the accuracy of the geometric shape and proportion of the image, and improve the reliability of the inspection. In addition, by adjusting the distance between the circuit board and the inspection source, the illumination angle and intensity of the light source can be optimized to ensure uniform illumination of the circuit board surface. During close-range inspection, the light source can be more concentrated on the inspection area to improve the contrast of the image. During long-range inspection, the direct light source can be reduced to avoid overexposure.

[0022] Among them, the pointer and height scale bar set up can facilitate the staff to accurately understand the extent of the pallet's rise during the process of adjusting the pallet's height. It can not only minimize the error and ensure that each adjustment can reach the expected height, but also the pointer and height scale bar provide clear height indications, so that the staff can quickly find the required height position and reduce adjustment time.

[0023] 2. Through the provision of the sliding column, the second connecting block, the connecting plate, the first connecting block, the lifting column, the spring, the pressing plate, the air bag and the adsorption hole, not only can the circuit board be automatically adsorbed and fixed on the end surface of the pallet in the process of pushing the pallet to drive the circuit board into the optical inspection machine, thereby ensuring the consistency of each fixing process and reducing the problem of loose fixation or inaccurate fixation position caused by differences in human operation, but also the adsorption and fixation of the circuit board can be automatically released during the process of removing the circuit board from the optical inspection machine after the inspection is completed, thereby reducing the complexity of manual operation and ensuring that the circuit board can be removed from the pallet smoothly and quickly.

[0024] 3. The circuit board centering limit mechanism can automatically drive the limit plates on both sides to slide closer to each other, pushing the circuit board placed on the pallet to the center. This not only allows the circuit board to be in the best position during the inspection process, reducing the inspection error caused by position deviation, avoiding image distortion and ensuring the accuracy of the image's geometric shape and proportion, and improving the reliability of inspection, but also can adapt to circuit boards of different sizes and shapes, with good versatility and flexibility, and meet diverse inspection needs.

[0025] 4. By covering the limit plate above the adsorption hole, dust can be prevented from entering the airbag through the adsorption hole when the pallet is not in use. This can not only reduce the wear of the airbag and adsorption system, extend its service life, reduce its maintenance cost, and ensure the efficient operation of the adsorption function, but also ensure that the circuit board is stably fixed during the detection process, reduce the movement or position deviation of the circuit board caused by insufficient adsorption force, thereby improving the accuracy and reliability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a structural schematic diagram of another position of the support plate of the present invention;

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of area A in the middle;

[0030] Figure 4 This is a schematic diagram of the connection structure between the support plate and the L-shaped plate of the present invention;

[0031] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0032] Figure 6This is a schematic diagram of the bottom connection structure of the support plate of the present invention;

[0033] Figure 7 This is a schematic diagram of the support plate connection structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the internal structure of the support plate of the present invention;

[0035] Figure 9 This is a schematic diagram of the connection structure between the sliding column and the pressing plate of the present invention;

[0036] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure of the middle C area.

[0037] In the figure: 1. Optical inspection machine; 2. Inspection tank; 3. Support plate;

[0038] 401, L-shaped plate; 402, L-shaped groove; 403, slide rail; 404, threaded rod; 405, mounting bracket; 406, pointer; 407, vertical plate; 408, height scale bar; 409, moving block; 410, slider; 411, lifting plate; 412, support plate; 413, sliding column; 414, airbag; 415, pressing plate; 416, first connecting block; 417, connecting plate; 418, second connecting block; 419, lifting column; 420, spring;

[0039] 501, limit plate; 502, connecting frame; 503, rack plate; 504, transmission gear; 505, rotating shaft; 506, torsion spring;

[0040] 6. Through groove; 7. Adsorption hole. DETAILED DESCRIPTION

[0041] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] This embodiment is a visual inspection device for server production, such as Figure 1 - Figure 10As shown, it includes an optical inspection machine 1, an inspection slot 2 is provided on the optical inspection machine 1, a support plate 3 is provided in the inspection slot 2, through slots 6 are provided on both sides of the support plate 3, and an adsorption hole 7 is provided at the center of the upper end surface of the support plate 3. It also includes a circuit board inspection height adjustment mechanism and a circuit board centering limit mechanism. The circuit board inspection height adjustment mechanism includes symmetrically arranged L-shaped plates 401, and the L-shaped plates 401 are fixedly connected to the inner wall of the inspection slot 2. The L-shaped plates 401 are provided with an L-shaped slot 402 on the side away from the inner wall of the inspection slot 2, and the L-shaped slots 402 are slidably connected with moving blocks 409, and the moving blocks 409 are fixedly connected to the side walls of the support plate 3. The circuit board inspection height adjustment mechanism is used to adjust the height of the circuit board from the inspection source during the inspection process.

[0043] In this embodiment, Figure 4 As shown, the circuit board detection height adjustment mechanism also includes symmetrically arranged slide rails 403, which are fixedly connected to the inner side walls of the detection groove 2, and the slide rails 403 are located below the L-shaped plate 401, and sliders 410 are slidably connected in the slide rails 403, and threaded rods 404 are threadedly connected to the sliders 410, and the threaded rods 404 are threadedly connected to the slide rails 403, and the sliders 410 are rotatably connected to the lifting plates 411 on the side away from the slide rails 403, and the lifting plates 411 are rotatably connected to the lower end surface of the support plate 3 on the end away from the sliders 410. When the slider 410 is driven to move horizontally by the threaded rods 404, the slider 410 will first push the support plate 3 to move horizontally along the horizontal path of the L-shaped groove 402 opened on the side wall of the L-shaped plate 401, and then slide upward along the vertical path of the L-shaped groove 402, thereby changing the height of the support plate 3.

[0044] In this embodiment, Figure 3 As shown, mounting brackets 405 are symmetrically fixedly connected to the side walls of the pallet 3, and pointers 406 are fixedly connected to the mounting brackets 405. Vertical plates 407 are symmetrically fixedly connected to the optical inspection machine 1, and the vertical plates 407 are respectively located on both sides of the inspection slot 2. Height scale bars 408 are equidistantly fixedly connected to the side walls of the vertical plates 407, and the height scale bars 408 correspond to the pointers 406. When the pallet 3 rises, the mounting brackets 405 can drive the pointer 406 to rise synchronously, so that the pointer 406 moves upward along the height scale bar 408 connected to the side walls of the vertical plates 407. The staff can understand the rising height of the pallet 3 by observing the height scale bar 408 pointed to by the pointer 406.

[0045] In this embodiment, Figure 8As shown, an airbag 414 is fixedly connected to the inside of the support plate 3, and the adsorption holes 7 are connected to the airbag 414. When the airbag 414 is squeezed, the air will be discharged through the adsorption holes 7. When the airbag 414 expands, the outside air will be sucked in through the adsorption holes 7. At this time, if a circuit board is placed above the adsorption hole 7, the adsorption hole 7 will adsorb and fix the circuit board.

[0046] In this embodiment, Figure 8 - Figure 10 As shown, a pressing plate 415 is vertically slidably connected to the interior of the support plate 3, and the pressing plate 415 is located below the airbag 414. A lifting column 419 is fixedly connected to the lower end surface of the pressing plate 415, and the lifting column 419 is slidably connected to the support plate 3. When the lifting column 419 rises, it drives the pressing plate 415 to press the airbag 414 to discharge the air inside the airbag 414. When the pressing plate 415 descends, the airbag 414 can automatically expand due to the rebound force of the airbag.

[0047] In this embodiment, Figure 6 、 Figure 9 and Figure 10 As shown, the lower end of the lifting column 419 is fixedly connected to the first connecting block 416, and the upper end surface of the first connecting block 416 is fixedly connected to the spring 420. The upper end of the spring 420 is fixedly connected to the lower end surface of the support plate 3. The spring 420 is sleeved on the outer surface of the lifting column 419. When the first connecting block 416 pushes the lifting column 419 to rise, it will squeeze the spring 420. When the force on the first connecting block 416 disappears, the rebound force of the spring 420 can push the first connecting block 416 to automatically descend, and pull the lifting column 419 out from the inside of the support plate 3.

[0048] In this embodiment, Figure 8 - Figure 10 As shown, one side of the first connecting block 416 is rotatably connected to a connecting plate 417, and the connecting plate 417 is rotatably connected to the second connecting block 418 at one end away from the first connecting block 416. A sliding column 413 is fixedly connected to the side wall of the second connecting block 418, and the outer surface of the sliding column 413 is slidably connected to the support plate 412, and the support plate 412 is fixedly connected to the lower end surface of the support plate 3. When the sliding column 413 slides on the support plate 412 toward the first connecting block 416, the second connecting block 418 and the connecting plate 417 are set to push the first connecting block 416 to rise synchronously.

[0049] In the existing technology, traditional optical inspection equipment usually adopts a fixed detection distance. This fixed distance detection method has many limitations. First, due to the different heights of components on the circuit board, it is difficult to ensure that the detection source can clearly capture the image of all components with a fixed distance. Especially when detecting high components, occlusion is prone to occur, resulting in incomplete detection. Secondly, the fixed distance cannot be flexibly adjusted according to the needs of the detection task. For small defects that require high-resolution detection (such as cold solder joints, over-soldering or small cracks in solder joints) and the overall layout that requires large-field detection, it is impossible to meet the requirements of detection accuracy and efficiency at the same time. In addition, the fixed distance will also cause image distortion and distortion, affecting the accuracy of detection, and the illumination angle and intensity of the light source are difficult to optimize at a fixed distance. Overexposure is prone to occur during close-range detection, and long-range detection is affected by insufficient light source. Image quality: Compared with the existing technology, in the process of pushing the support plate 3 to drive the circuit board into the optical inspection machine 1 for inspection, the height of the support plate 3 can be adjusted to change the distance between the circuit board and the inspection source inside the optical inspection machine 1. This can not only capture the image of the circuit board with the best resolution, improve the clarity and detail of the image, and thus more accurately detect tiny defects on the surface of the circuit board, such as cold solder joints, over-soldering or tiny cracks in the solder joints, but also the appropriate distance can reduce the aberration and distortion of the image, ensure the accuracy of the geometric shape and proportion of the image, and improve the reliability of the inspection. In addition, by adjusting the distance between the circuit board and the inspection source, the illumination angle and intensity of the light source can be optimized to ensure uniform illumination of the circuit board surface. During close-range inspection, the light source can be more concentratedly illuminated on the inspection area to improve the contrast of the image. During long-range inspection, the direct exposure of the light source can be reduced to avoid overexposure.

[0050] Among them, the pointer 406 and the height scale bar 408 are set, which can facilitate the staff to accurately understand the rising extent of the pallet 3 during the process of adjusting the height of the pallet 3. It can not only reduce the error to a minimum and ensure that the expected height can be achieved each time the adjustment is made, but also the pointer 406 and the height scale bar 408 provide clear height indications, so that the staff can quickly find the required height position and reduce adjustment time.

[0051] In other aspects, this embodiment also provides a circuit board centering limiting mechanism for pushing the circuit board to the center of the upper end surface of the support plate 3, such as Figure 4 and Figure 5 As shown, the circuit board centering limiting mechanism includes symmetrically arranged limiting plates 501 , each of which is slidably connected between the two through slots 6 , and covers the top of the adsorption hole 7 .

[0052] In this embodiment, Figure 5As shown, the side walls of the limit plates 501 are fixedly connected with connecting frames 502, and the side of the connecting frames 502 away from the limit plates 501 are fixedly connected with rack plates 503, and the two rack plates 503 are meshed with a transmission gear 504, and the transmission gear 504 is passed through and fixedly connected with a rotating shaft 505, which is rotatably connected to the side walls of the support plate 3. When one of the limit plates 501 moves, the other limit plate 501 can be driven to move in the opposite direction synchronously through the meshing connection between the rack plate 503 and the transmission gear 504.

[0053] In this embodiment, Figure 5 As shown, the transmission gear 504 is fixedly connected to a torsion spring 506 on the side close to the support plate 3, and the torsion spring 506 is fixedly connected to the side wall of the support plate 3 at one end away from the transmission gear 504. The torsion spring 506 is sleeved on the outer surface of the rotating shaft 505. When the transmission gear 504 is subjected to force to drive the rotating shaft 505 to rotate, the torsion spring 506 will be squeezed at the same time. After the force on the transmission gear 504 disappears, the rebound force of the torsion spring 506 can automatically drive the transmission gear 504 to rotate in the opposite direction.

[0054] Compared with the existing technology, it can automatically drive the limit plates 501 on both sides to slide close to each other, pushing the circuit board placed on the support plate 3 to move to the center, which can not only make the circuit board in the best position during the detection process, reduce the detection error caused by position deviation, avoid image distortion and distortion, ensure the accuracy of the image's geometric shape and proportion, and improve the reliability of detection, but also can adapt to circuit boards of different sizes and shapes, with good versatility and flexibility, and meet diverse detection needs.

[0055] The working process and principles involved in the overall content of the above embodiment are as follows:

[0056] It should be noted that the threaded rods 404 are all connected to a driving power source.

[0057] When the staff needs to inspect the produced server circuit boards, they first pull one of the limit plates 501 to slide in the through slot 6 opened on the support plate 3, driving the connecting frame 502 connected to one of the limit plates 501 to move synchronously. Since the two connecting frames 502 are connected to the rack plates 503, and the rack plates 503 are meshed with the transmission gear 504, during the horizontal movement of one of the connecting frames 502, the meshing connection of the rack plate 503 and the transmission gear 504 can be used to toggle the other connecting frame 502 to drive the limit plate 501 to move synchronously in the opposite direction, and make the transmission gear 504 rotate. During the rotation of the transmission gear 504, the transmission gear 504 will drive the rotating shaft 505 to rotate synchronously on the side wall of the support plate 3, and at the same time, the torsion spring 506 connected between the transmission gear 504 and the side wall of the support plate 3 is After the limiting plates 501 are squeezed and move away from each other, the staff can place the circuit board on top of the support plate 3, and then slowly loosen one of the limiting plates 501. Through the rebound force of the torsion spring 506 connected between the transmission gear 504 and the support plate 3, the transmission gear 504 can be driven to rotate in the opposite direction. At this time, the transmission gear 504 will pass through the rack plate 503 and the connecting frame 502 to toggle the limiting plates 501 on both sides to slide closer to each other, pushing the circuit board placed on the support plate 3 to the center of the support plate 3 and limiting it. This can not only make the circuit board in the best position during the inspection process, reduce the inspection error caused by position deviation, avoid image distortion and distortion, ensure the accuracy of the geometric shape and proportion of the image, improve the reliability of inspection, but also can adapt to circuit boards of different sizes and shapes, with good versatility and flexibility, and meet diverse inspection needs;

[0058] When the cam 402 is in the process of being moved, the cam 402 is rotated by the cam 404 and the cam 405 is rotated by the cam 406. When the cam 402 is in the process of being moved, the cam 402 is rotated by the cam 406 and the cam 407 is rotated by the cam 408. The lifting plate 411 will move from an inclined state to a vertical state. During the process of changing the state of the lifting plate 411, the lifting plate 411 will push the supporting plate 3, driving the moving block 409 to slide upward along the vertical path of the L-shaped groove 402, driving the supporting plate 3 to rise, and adjusting the height of the supporting plate 3 to change the distance between the circuit board and the internal detection source of the optical detection machine 1. This can not only capture the image of the circuit board with the best resolution, improve the clarity and detail of the image, and thus more accurately detect tiny defects on the surface of the circuit board, such as cold soldering, over-soldering or tiny cracks in the solder joints, but also the appropriate distance can reduce the aberration and distortion of the image, ensure the accuracy of the geometric shape and proportion of the image, and improve the reliability of the detection. In addition, by adjusting the distance between the circuit board and the detection source, the illumination angle and intensity of the light source can be optimized to ensure uniform illumination of the circuit board surface. During close-range detection, the light source can be more concentratedly irradiated on the detection area to improve the contrast of the image. During long-range detection, the direct radiation of the light source can be reduced to avoid overexposure.

[0059] When the pallet 3 moves to the inside of the optical inspection machine 1, the mounting bracket 405 and the pointer 406 connected to the side wall of the pallet 3 will move synchronously to the vertical plate 407. As the pallet 3 rises, the pallet 3 will drive the pointer 406 to move upward synchronously through the mounting bracket 405. At this time, the height scale bar 408 on the side wall of the vertical plate 407 pointed to by the pointer 406 will change synchronously, which is convenient for the staff to accurately understand the rising amplitude of the pallet 3 during the process of adjusting the height of the pallet 3. Not only can the error be minimized and it is ensured that the expected height can be achieved each time the adjustment is made, but the pointer 406 and the height scale bar 408 provide clear height indications, so that the staff can quickly find the required height position and reduce the adjustment time.

[0060] During the process of the pallet 3 moving into the optical inspection machine 1, the sliding column 413 connected to the bottom of the pallet 3 will be separated from the inner wall of the inspection slot 2 synchronously. As the sliding column 413 and the inspection slot 2 separate, the spring 420 connected to the lower end surface of the pallet 3 will push the first connecting block 416 to automatically drop away from the pallet 3. Since the side wall of the first connecting block 416 is rotatably connected with a connecting plate 417, the connecting plate 417 is rotatably connected to the second connecting block 418 at one end away from the first connecting block 416, and the second connecting block 418 is fixedly connected to one end of the sliding column 413, as the first connecting block 416 moves, the connecting plate 417 and the second connecting block 418 are provided, which can push the sliding column 413 to slide synchronously on the support plate 412, and when the first connecting block 416 drops, the first connecting block 416 will synchronously pull the lifting column 419 to slide out from the inside of the pallet 3. The pressing plate 415 connected to the upper end of the lifting column 419 is driven to slide vertically downward inside the support plate 3, so that the pressing plate 415 and the upper air bag 414 are separated, and the pressure on the air bag 414 is released. After the squeezing of the air bag 414 is released, the air bag 414 will automatically rebound, pump air, and adsorb the circuit board on the upper end surface of the support plate 3 through the adsorption hole 7. Not only can it automatically adsorb and fix the circuit board on the upper end surface of the support plate 3 in the process of pushing the support plate 3 to drive the circuit board into the optical inspection machine 1, ensuring the consistency of each fixing process, reducing the problem of loose fixation or inaccurate fixation position caused by human operation differences, but also can automatically contact the adsorption and fixation of the circuit board during the process of removing the circuit board from the optical inspection machine 1 after the inspection is completed, reducing the complexity of manual operation, and ensuring that the circuit board can be smoothly and quickly removed from the support plate 3;

[0061] After the inspection of the circuit board placed on the pallet 3 is completed, the staff can drive the threaded rod 404 to flip again, driving the slider 410 to slide in the opposite direction inside the slide rail 403, and pull the pallet 3 out of the optical inspection machine 1 through the lifting plate 411. When the pallet 3 moves close to the side wall of the inspection tank 2, the sliding post 413 connected below the pallet 3 will first contact the inner wall of the inspection tank 2, and as the pallet 3 continues to approach the inner wall of the inspection tank 2, the inspection tank 2 will limit the sliding post 413, pushing the sliding post 413 to slide horizontally on the support plate 412. When the sliding post 413 slides on the support plate 412 toward the first connecting block 416, the sliding post 413 13 will push the first connecting block 416 to rise through the second connecting block 418 and the connecting plate 417, squeeze the spring 420 connected to the first connecting block 416 and the bottom of the supporting plate 3, and push the lifting column 419 connected to the upper end surface of the first connecting block 416 to slide into the inside of the supporting plate 3. During the rising process of the lifting column 419, the lifting column 419 will push the pressing plate 415 to rise synchronously inside the supporting plate 3, squeeze the air bag 414 inside the supporting plate 3, discharge the air inside the air bag 414, and automatically release the adsorption and fixation of the adsorption hole 7 on the supporting plate 3, thereby reducing the complexity of manual operation and ensuring that the circuit board can be removed from the supporting plate 3 smoothly and quickly;

[0062] After the pallet 3 brings the circuit board out of the optical inspection machine 1, the staff can move one of the limit plates 501 away from the circuit board, and then take the circuit board out from above the pallet 3. After the pallet 3 is taken out, the staff can loosen the limit plate 501, and through the transmission gear 504 and the rebound force of the torsion spring 506 connected to the side wall of the pallet 3, the transmission gear 504 can be moved to drive the rack plate 503 to move in the opposite direction, and the two limit plates 501 can be driven to slide close to each other on the upper end surface of the pallet 3 through the connecting frame 502 until they fit together. At this time, the limit plate 501 will cover the adsorption hole 7 opened above the pallet 3, preventing dust from entering the airbag 414 through the adsorption hole 7, which can not only reduce the wear of the airbag 414 and the adsorption system, extend its service life, reduce its maintenance cost, ensure the efficient operation of the adsorption function, but also ensure that the circuit board is stably fixed during the inspection process, reduce the movement or position deviation of the circuit board caused by insufficient adsorption force, thereby improving the accuracy and reliability of the inspection.

[0063] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A visual inspection device for server production, comprising an optical inspection machine (1), wherein the optical inspection machine (1) is provided with an inspection slot (2), a support plate (3) is provided in the inspection slot (2), through slots (6) are provided on both sides of the support plate (3), and an adsorption hole (7) is provided at the center of the upper end surface of the support plate (3), characterized in that: It also includes a circuit board detection height adjustment mechanism and a circuit board centering limit mechanism; The circuit board detection height adjustment mechanism comprises symmetrically arranged L-shaped plates (401), each of the L-shaped plates (401) being fixedly connected to the inner side wall of the detection groove (2), each of the L-shaped plates (401) being provided with an L-shaped groove (402) on a side away from the inner wall of the detection groove (2), each of the L-shaped grooves (402) being slidably connected to a moving block (409), each of the moving blocks (409) being fixedly connected to the side wall of the support plate (3), and the circuit board detection height adjustment mechanism being used to adjust the height of the circuit board from the detection source during the detection process; The circuit board centering limiting mechanism is used to push the circuit board to the center of the upper end surface of the support plate (3).

2. The visual inspection equipment for server production according to claim 1, characterized in that: The circuit board detection height adjustment mechanism further comprises symmetrically arranged slide rails (403), the slide rails (403) are fixedly connected to the inner side wall of the detection groove (2), and the slide rails (403) are located below the L-shaped plate (401), the slide rails (403) are slidably connected with sliders (410), the sliders (410) are threadedly connected with threaded rods (404), the threaded rods (404) are rotatably connected to the slide rails (403), the sliders (410) are rotatably connected to the side away from the slide rails (403), and the lift plate (411) is rotatably connected to the lower end surface of the support plate (3) at one end away from the slider (410).

3. The visual inspection equipment for server production according to claim 2, characterized in that: The side walls of the support plate (3) are symmetrically fixedly connected with mounting frames (405), and the mounting frames (405) are fixedly connected with pointers (406). The optical inspection machine (1) is symmetrically fixedly connected with vertical plates (407), and the vertical plates (407) are respectively located on both sides of the inspection slot (2). The side walls of the vertical plates (407) are equidistantly fixedly connected with height scale bars (408), and the height scale bars (408) correspond to the pointers (406).

4. The visual inspection equipment for server production according to claim 3, characterized in that: An air bag (414) is fixedly connected to the interior of the support plate (3), and the adsorption holes (7) are all connected to the air bag (414).

5. The visual inspection equipment for server production according to claim 4, characterized in that: A pressing plate (415) is vertically slidably connected inside the supporting plate (3), and the pressing plate (415) is located below the airbag (414). A lifting column (419) is fixedly connected to the lower end surface of the pressing plate (415), and the lifting column (419) is slidably connected to the supporting plate (3).

6. The visual inspection equipment for server production according to claim 5, characterized in that: The lower end of the lifting column (419) is fixedly connected to a first connecting block (416), the upper end surface of the first connecting block (416) is fixedly connected to a spring (420), the upper end of the spring (420) is fixedly connected to the lower end surface of the supporting plate (3), and the spring (420) is sleeved on the outer surface of the lifting column (419).

7. The visual inspection equipment for server production according to claim 6, characterized in that: One side of the first connecting block (416) is rotatably connected to a connecting plate (417), and one end of the connecting plate (417) away from the first connecting block (416) is rotatably connected to a second connecting block (418). A sliding column (413) is fixedly connected to the side wall of the second connecting block (418), and the outer surface of the sliding column (413) is slidably connected to a support plate (412), and the support plate (412) is fixedly connected to the lower end surface of the support plate (3).

8. The visual inspection equipment for server production according to claim 1, characterized in that: The circuit board centering limiting mechanism comprises symmetrically arranged limiting plates (501), each of the limiting plates (501) is slidably connected between two through slots (6), and the limiting plates (501) cover above the adsorption holes (7).

9. The visual inspection equipment for server production according to claim 8, characterized in that: The side walls of the limiting plates (501) are fixedly connected with connecting frames (502), and the side of the connecting frames (502) away from the limiting plates (501) is fixedly connected with rack plates (503). A transmission gear (504) is meshed and connected between the two rack plates (503). A rotating shaft (505) is fixedly connected through the transmission gear (504), and the rotating shaft (505) is rotatably connected to the side wall of the supporting plate (3).

10. The visual inspection equipment for server production according to claim 9, characterized in that: A torsion spring (506) is fixedly connected to the side of the transmission gear (504) close to the support plate (3); one end of the torsion spring (506) away from the transmission gear (504) is fixedly connected to the side wall of the support plate (3); and the torsion spring (506) is sleeved on the outer surface of the rotating shaft (505).

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