A computer case visual inspection device

Abstract

This invention relates to the field of defect detection technology, and more particularly to a computer chassis visual inspection device, comprising a chassis body, a top-mounted industrial camera, a side industrial camera, and a front conveyor line. The invention utilizes a rotating mechanism installed at the inspection station. When a chassis with three folded edges enters the inspection area, the chassis can be driven to rotate by a specific angle, turning the single-sided opening towards the front conveyor line. This allows the middle side industrial camera to obtain a complete image of the chassis body's inner bending area, punched edges, and facade from an unobstructed angle. This structure overcomes the limitation of traditional fixed dual-camera layouts that can only inspect chassis with two folded edges. It achieves automated identification of blind-angle defects inside chassis with three folded edges without changing workstations or manual flipping, significantly improving the equipment's compatibility with chassis of different folded edge specifications. Furthermore, by placing the side industrial camera in the middle position, it can be directly used on double-folded chassis bodies.

Description

Technical Field

[0001] This invention relates to the field of defect detection technology, and in particular to a computer chassis visual inspection device. Background Technology

[0002] The computer chassis visual inspection device is used for automated inspection of appearance and dimensional defects in stamped chassis parts. With the widespread application of new lightweight materials such as magnesium-aluminum alloys and carbon fiber composites in chassis manufacturing, these materials are prone to edge micro-cracks, surface scratches, and springback deformation during stamping. It is necessary to focus on inspecting corner areas, punched hole edges, and flat mating areas. The device mainly consists of a conveyor line, multiple sets of industrial cameras, a ring light source, an image processing industrial control computer, and a sorting mechanism. Chassis parts are sent into the inspection station via the conveyor line. The cameras, with the help of the light source, collect images of the chassis surface, holes, and bends. After the industrial control computer analyzes and identifies defects, the sorting mechanism automatically rejects unqualified products.

[0003] Existing computer chassis visual inspection devices typically employ a fixed dual-camera opposing layout, with an industrial camera mounted in the middle and chassis components transported by conveyor lines on both sides. This structure is only suitable for U-shaped or channel-shaped stamped parts with bends on both sides and openings at both ends. The camera can be inserted from the opening end to photograph the inner sidewall. However, when the product is transformed into a semi-enclosed shell with three folds and one opening, the fixed camera and bracket in the middle will be directly facing the opening or bend side of the chassis, causing physical interference. It is impossible to penetrate deep into the opening to photograph the inner bend and the edge of the punching. Since the camera position is fixed and cannot be adjusted, the equipment cannot be compatible with chassis products with different numbers of folds. When changing products, the entire inspection station needs to be replaced or manual flipping is required for re-inspection, resulting in low inspection efficiency, frequent blind spots and missed inspections, and difficulty in adapting to the needs of flexible production of multiple varieties.

[0004] Therefore, a computer chassis visual inspection device is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a computer chassis visual inspection device.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a computer chassis visual inspection device, comprising a chassis body, a top-mounted industrial camera, a side-mounted industrial camera, and a front conveyor line. A rear conveyor line for conveying the chassis body is provided behind the front conveyor line. An inspection frame is provided between the front and rear conveyor lines. A fixed frame is fixedly connected to the top of the inspection frame, and a fixed ring is fixedly connected to the bottom of the fixed frame. A rotating cylinder is rotatably connected to the inner side of the fixed ring, and a rotating ring is fixedly connected to the bottom of the rotating cylinder. A pair of side-mounted industrial cameras are provided, and the side-mounted industrial cameras are located below the rotating ring. A connecting plate is fixedly connected between the tops of the side-mounted industrial cameras. Positioning guide rollers for positioning the chassis body are provided on both sides of the top of the front conveyor line. A front support is fixedly connected to the top of the front conveyor line. The top-mounted industrial camera is mounted on the front support. A rotating mechanism for driving the chassis body to rotate is provided on the rotating ring. A lower inspection mechanism for detecting defects at the bottom of the chassis body is also provided on the inspection frame.

[0007] In the above technical solution, a disc is rotatably connected to the inner side of the rotating ring. A pair of fixed plates are fixedly connected between the top of the disc and the bottom of the fixed frame. An upper electric telescopic cylinder is fixedly connected to the top of the disc. The output end of the upper electric telescopic cylinder passes through the disc and is fixedly connected to the top of the connecting plate. By setting the upper electric telescopic cylinder, the side industrial camera can be driven to rise and fall, thereby enabling visual inspection of the four-fold edge chassis body.

[0008] In the above technical solution, the rotating mechanism further includes a drive motor, which is fixedly connected to the top of the fixed ring. A gear ring is fixedly connected to the outer wall of the rotating cylinder. A gear is fixedly connected to the output end of the drive motor through the bottom end of the fixed ring. The gear and the gear ring mesh with each other. A pair of sliding grooves are opened through the top of the rotating ring. Sliding blocks are slidably connected to the inner side of each sliding groove. A positioning plate is fixedly connected to the bottom end of each sliding block. Side plates are fixedly connected to both sides of the outer wall of the positioning plate. A horizontal plate is fixedly connected to the side wall of each side plate. A lower electric telescopic cylinder is fixedly connected to the top of the horizontal plate. A vacuum suction cup for adsorbing the body of the casing is fixedly connected to the output end of the lower electric telescopic cylinder through the bottom end of the horizontal plate. The side panels are provided with L-shaped grooves on their side walls. An L-shaped plate is slidably connected to the inside of the L-shaped groove. A pull rod for positioning and pulling the machine body is fixedly connected to the bottom end of the L-shaped plate. The pull rod passes through the bottom end of the side panel. An upper spring is fixedly connected between the top end of the L-shaped groove and the top end of the L-shaped plate. A top plate is fixedly connected to the inside of the fixing frame. The inner side of each slide groove is rotatably connected with a threaded rod, and the side wall of each rotating ring is fixedly connected with a moving motor relative to the side of the slide groove. The output end of the moving motor passes through the inner side of the slide groove and is fixedly connected to the side wall of the threaded rod. The threaded rod is threadedly connected to the inner side wall of the sliding block. The top plate is located at the front end of the inner wall of the fixed frame. Both ends of the rear side of the top plate are fixedly connected to right-angled blocks with inclined surfaces. The top of the side wall of the L-shaped plate is fixedly connected to a top rod. The L-shaped grooves are all opened through vertical grooves on the side that are close to each other. The L-shaped plates are fixedly connected to each other with a movable plate relative to the position inside the vertical groove. By setting up a rotating mechanism, when the chassis with three folded edges enters the inspection area, it can be driven to rotate at a specific angle, turning the single-sided opening toward the direction of the front conveyor line, so that the middle side industrial camera can completely image the inner bending part, punching edge and facade of the chassis body from an unobstructed angle.

[0009] In the above technical solution, furthermore, external industrial cameras are fixedly connected to both sides of the inner wall of the fixed frame. The external industrial cameras are located next to the outer wall of the chassis body. Through the setting of the external industrial cameras, the outer surface of the chassis body can be visually inspected during the rotation of the three-fold chassis body.

[0010] In the above technical solution, the lower inspection mechanism further includes a bottom electric telescopic cylinder. A base frame is fixedly connected to the bottom end of the inspection frame. A pair of bottom electric telescopic cylinders are provided, and both bottom electric telescopic cylinders are fixedly connected to the bottom end of the base frame. An inspection plate is provided inside the inspection frame. The output end of the bottom electric telescopic cylinder passes through the top end of the base frame and is fixedly connected to the bottom end of the inspection plate. The inspection plate is longitudinally slidably connected to the inside of the inspection frame. A lower industrial camera is fixedly connected to the top end of the base frame. The top end of the inspection plate is flush with the top end of the conveyor belts of the front and rear conveyor lines. An inspection hole is opened through the top end of the inspection plate. Through the setting of the lower inspection mechanism, during the process of the vacuum suction cup adsorbing and fixing the chassis body for rotation, the bottom electric telescopic cylinder drives the inspection plate to move down, thereby removing the obstruction of the bottom of the chassis and exposing the space below the chassis. Then, the lower industrial camera takes an upward-looking picture of the bottom surface of the chassis body for inspection.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes a rotating mechanism installed at the inspection station. When a chassis with three folded edges enters the inspection area, the chassis can be driven to rotate by a specific angle, turning the single-sided opening towards the direction of the front conveyor line. This allows the central side industrial camera to obtain a complete image of the inner bending area, punching edge, and facade of the chassis from an unobstructed angle. This structure overcomes the limitation of traditional fixed dual-camera layouts that can only inspect chassis with two folded edges. It achieves automated identification of blind corner defects inside chassis with three folded edges without changing workstations or manual flipping, significantly improving the equipment's compatibility with chassis of different folded edge specifications. Furthermore, by placing the side industrial camera in the middle position, it can be used directly on the body of double-folded chassis.

[0012] 2. This invention, through the setting of the lower detection mechanism, enables the bottom electric telescopic cylinder to move the detection plate downwards while the chassis body is rotated and fixed by the vacuum suction cup, thereby removing the obstruction to the bottom of the chassis and exposing the space below the chassis. Subsequently, the lower industrial camera takes an upward-looking picture of the bottom surface of the chassis body for inspection. This structure effectively solves the blind spot problem in traditional inspection where the bottom surface of the chassis is obstructed by the support platform and cannot be imaged. It can effectively identify the edges of the bottom punching holes, planar scratches, and micro-cracks in the stamping of new materials, significantly improving the detection rate of defects on the bottom surface of the chassis with three-sided folded edges, eliminating the need for manual flipping and re-inspection. Attached Figure Description

[0013] Figure 1 This is a frontal three-dimensional structural diagram of the visual inspection device of the present invention; Figure 2 Appendix of the present invention Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a rear-view three-dimensional structural diagram of the detection frame of the present invention; Figure 4 Appendix of the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle; Figure 5 This is a frontal three-dimensional structural diagram of the testing frame of the present invention during testing; Figure 6 This is a front-view full-section three-dimensional structural diagram of the fixing frame of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the fixed ring, rotating ring, and disk of the present invention. Figure 8 This is a schematic diagram of the three-dimensional structure of the separated side plate and L-shaped plate of the present invention; Figure 9 This is a schematic diagram of the overall appearance structure of the threaded rod, side plate, and positioning plate of the present invention. Figure 10 This is a schematic diagram of the overall appearance structure of the chassis body of the present invention.

[0014] In the diagram: 1. Chassis body; 2. Top-view industrial camera; 3. Side-view industrial camera; 4. Front conveyor line; 5. Rear conveyor line; 6. Inspection frame; 7. Fixing frame; 8. Fixing ring; 9. Rotating cylinder; 10. Rotating ring; 11. Connecting plate; 12. Positioning guide roller group; 13. Front support; 14. Disc; 15. Fixing plate; 16. Upper electric telescopic cylinder; 17. Drive motor; 18. Gear ring; 19. Gear; 20. Slide groove; 21. Sliding block; 2 2. Positioning plate; 23. Side plate; 24. Horizontal plate; 25. Lower electric telescopic cylinder; 26. Vacuum suction cup; 27. L-shaped groove; 28. L-shaped plate; 29. ​​Pull rod; 30. Upper spring; 31. Threaded rod; 32. Moving motor; 33. External industrial camera; 34. Top plate; 35. Right angle block; 36. Top rod; 37. Moving plate; 38. Bottom electric telescopic cylinder; 39. Base frame; 40. Detection plate; 41. Lower industrial camera; 42. Detection hole. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0017] In practical use, it has been found that existing computer chassis visual inspection devices typically adopt a fixed dual-camera opposing layout, with an industrial camera mounted in the middle and chassis parts transported by conveyor lines on both sides. This structure is only suitable for U-shaped or channel-shaped stamped parts with bends on both sides and openings at both ends. The camera can be inserted from the opening end to photograph the inner sidewall. However, when the product is changed to a semi-enclosed shell with three folds and one opening, the fixed camera and bracket in the middle will be directly facing the opening or bend side of the chassis, causing physical interference. It is impossible to penetrate into the opening to photograph the inner bend and the edge of the punching. Since the camera position is fixed and cannot be adjusted, the equipment cannot be compatible with chassis products with different numbers of folds. When changing products, the entire inspection station needs to be replaced or manual flipping is required for re-inspection, resulting in low inspection efficiency, frequent blind spots and missed inspections, and difficulty in adapting to the needs of flexible production of multiple varieties. To solve the above problems, the following structure was invented.

[0018] like Figures 1-10The computer chassis vision inspection device shown includes a chassis body 1, a top-mounted industrial camera 2, a side-mounted industrial camera 3, and a front conveyor line 4. A rear conveyor line 5 for conveying the chassis body 1 is located behind the front conveyor line 4. Both the front and rear conveyor lines 4 and 5 are composed of a motor, conveyor frame, conveyor rollers, and conveyor belt, and are capable of driving the chassis body 1 for conveying. This is a mature technology in the prior art and will not be described in detail here. A detection frame 6 is provided between the front and rear conveyor lines 4 and 5. A fixed frame 7 is fixedly connected to the top of the detection frame 6, and a fixed ring 8 is fixedly connected to the bottom of the fixed frame 7. A rotating cylinder 9 is rotatably connected to the inner side of the fixed ring 8, and a rotating ring 10 is fixedly connected to the bottom of the rotating cylinder 9. The side-mounted industrial camera... The machine 3 is equipped with a pair of side industrial cameras 3, which are located below the rotating ring 10. A connecting plate 11 is fixedly connected between the top of the side industrial cameras 3. The top of the front conveyor line 4 is equipped with positioning guide roller groups 12 on both sides for positioning the machine body 1. The positioning guide roller groups 12 are used for positioning the machine body 1 on the front conveyor line 4 to ensure that the machine body 1 is positioned and conveyed to the designated position, so as to facilitate subsequent accurate and fast pulling onto the inspection frame 6. The top of the front conveyor line 4 is fixedly connected with a front bracket 13, and the overhead industrial camera 2 is set on the front bracket 13. The rotating ring 10 is equipped with a rotating mechanism for driving the machine body 1 to rotate. The inspection frame 6 is also equipped with a lower inspection mechanism for detecting defects at the bottom of the machine body 1.

[0019] A disc 14 is rotatably connected to the inner side of the rotating ring 10. A pair of fixed plates 15 are fixedly connected between the top of the disc 14 and the bottom of the fixed frame 7. An upper electric telescopic cylinder 16 is fixedly connected to the top of the disc 14. The output end of the upper electric telescopic cylinder 16 passes through the disc 14 and is fixedly connected to the top of the connecting plate 11. Through the setting of the upper electric telescopic cylinder 16, the side industrial camera 3 can be driven to rise and fall. Thus, when the four-fold edge chassis body 1 is transported to the inspection frame 6, the side industrial camera 3 is first raised, and the four-fold edge chassis body 1 is transferred to the inspection frame 6 through the rotating mechanism. Then, the upper electric telescopic cylinder 16 is controlled to drive the side industrial camera 3 to extend into the four-fold edge chassis body 1, and the rotating mechanism is controlled to drive the four-fold edge chassis body 1 to rotate, so as to realize visual inspection of the four-fold edge chassis body 1 and further improve the applicability of the device.

[0020] The rotating mechanism includes a drive motor 17, which is fixedly connected to the top of the fixed ring 8. A gear ring 18 is fixedly connected to the outer wall of the rotating cylinder 9. A gear 19 is fixedly connected to the bottom of the fixed ring 8 through the output end of the drive motor 17. The gear 19 and the gear ring 18 mesh with each other. A pair of sliding grooves 20 are opened through the top of the rotating ring 10. Sliding blocks 21 are slidably connected to the inner side of each sliding groove 20. A positioning plate 22 is fixedly connected to the bottom of each sliding block 21. Side plates 23 are fixedly connected to both sides of the outer wall of the positioning plate 22. A horizontal plate 24 is fixedly connected to the side wall of each side plate 23. A lower electric telescopic cylinder 25 is fixedly connected to the top of the horizontal plate 24. A vacuum suction cup 26 for adsorbing the body of the casing 1 is fixedly connected to the bottom of the horizontal plate 24 through the output end of the lower electric telescopic cylinder 25.

[0021] The side panels 23 are provided with L-shaped grooves 27 on their side walls. An L-shaped plate 28 is slidably connected to the inside of the L-shaped grooves 27. A pull rod 29 for positioning and pulling the machine box body 1 is fixedly connected to the bottom of the L-shaped plate 28. The pull rod 29 passes through the bottom of the side panels 23. An upper spring 30 is fixedly connected between the top of the L-shaped groove 27 and the top of the L-shaped plate 28. A top plate 34 is fixedly connected to the inside of the fixing frame 7.

[0022] The inner side of the slide groove 20 is rotatably connected with threaded rods 31. The side wall of the rotating ring 10 is fixedly connected with a moving motor 32 relative to the side of the slide groove 20. The output end of the moving motor 32 passes through the inner side of the slide groove 20 and is fixedly connected to the side wall of the threaded rod 31. The threaded rod 31 is threadedly connected to the inner side wall of the sliding block 21.

[0023] The top plate 34 is located at the front end of the inner wall of the fixed frame 7. Both ends of the rear side of the top plate 34 are fixedly connected with right-angled blocks 35 with inclined surfaces. The top of the side wall of the L-shaped plate 28 is fixedly connected with a top rod 36. The L-shaped groove 27 is provided with a vertical groove through one side of the L-shaped groove. The L-shaped plates 28 are fixedly connected with a movable plate 37 relative to the position inside the vertical groove.

[0024] An external industrial camera 33 is fixedly connected through both sides of the inner wall of the fixed frame 7. The external industrial camera 33 is located next to the outer wall of the chassis body 1. With the setting of the external industrial camera 33, the outer surface of the three-fold chassis body 1 can be visually inspected when the rotating mechanism drives the three-fold chassis body 1 to rotate.

[0025] When visually inspecting the three-fold edge chassis body 1, first place the three-fold edge chassis body 1 equidistantly on the front conveyor line 4 (note that the opening of the three-fold edge chassis body 1 should face the rear conveyor line 5 when placing it). At this time, control the drive motor 17 to start and drive the gear 19 to rotate, which in turn drives the meshing gear ring 18 to rotate, and at the same time drives the rotating cylinder 9, rotating ring 10, sliding block 21, positioning plate 22 and side plate 23 to rotate, thereby rotating the side plate 23 and positioning plate 22 180 degrees and moving them to the position next to the front conveyor line 4. Then control the moving motor 32 to start and drive the screw... The threaded rod 31 rotates, which in turn drives the threaded sliding block 21 to move to the side of the forward conveyor line 4. At this time, the inclined surface of the right-angle block 35 will press the top rod 36 on the outer L-shaped plate 28 (since the L-shaped plate 28 can only slide longitudinally in the L-shaped groove 27, when the top rod 36 slides, it will be pressed by the inclined surface of the right-angle block 35, thereby pushing the top rod 36 and the L-shaped plate 28 to move upward, and driving the pull rod 29 to move upward, while compressing the upper spring 30). Then, driven by the front conveyor line 4, the three-fold machine body 1 is sequentially conveyed to the inspection frame 6, and then the three-fold machine body 1 is conveyed to the side of the positioning plate 22. Then, the control motor 32 drives the threaded rod 31 to reverse, which in turn drives the sliding block 21 to move in the opposite direction. At this time, the outer push rod 36 will move out of the right-angle block 35, thus gradually releasing the pressure on the push rod 36. Subsequently, under the elastic force of the upper spring 30, the L-shaped plate 28 and the pull rod 29 will be pushed down and reset, which will then drive the outer pull rod 29 to insert into the inner side of the chassis body 1. Then, the pull rod 29 will drive the three-fold chassis body 1 to gradually move onto the inspection frame 6 (during the movement, the side industrial camera 3 will visually inspect the area that the inner wall of the three-fold chassis body 1 has moved through). After moving into place, the corresponding lower electric telescopic cylinder 25 can be controlled to start the belt. The vacuum suction cup 26 moves downward, so that the vacuum suction cup 26 adheres to the bottom of the inner side of the three-fold edge chassis body 1. Then, the vacuum suction cup 26 is controlled to start adsorb and fix the three-fold edge chassis body 1. Then, the drive motor 17 is controlled to start and drive the gear 19 to rotate, which in turn drives the meshing gear ring 18 to rotate. At the same time, the rotating cylinder 9, rotating ring 10, sliding block 21, positioning plate 22, side plate 23 and three-fold edge chassis body 1 rotate. During the rotation, the side industrial camera 3 will visually inspect other areas of the inner wall of the three-fold edge chassis body 1, and the outer industrial camera 33 will visually inspect other areas of the outer wall of the three-fold edge chassis body 1. At this point, the opening of the three-fold edge machine body 1 will be oriented towards the front conveyor line 4. Then, the moving motor 32 will be started to rotate the threaded rod 31, which will in turn move the threaded sliding block 21 to the side of the front conveyor line 4, driving the top rod 36 and the outer pull rod 29 to move upward (at this time, the three-fold edge machine body 1 being tested will be moved). Subsequently, the three-fold edge machine body 1 to be tested on the front conveyor line 4 will be transported to the side of the positioning plate 22. Then, the moving motor 32 can be reversed to drive the sliding block 21 to reset. At this time, the three-fold edge to be tested will be moved. The chassis body 1 moves onto the inspection frame 6, and the inspected three-fold chassis body 1 is pushed through the inspection frame 6 onto the rear conveyor line 5. When the sliding block 21 is about to reset, it will drive the top rod 36 on the inspected three-fold chassis body 1 to move to the inclined surface of the right angle block 35 on the other side. Then, under the action of the inclined surface of the right angle block 35, the corresponding pull rod 29 is driven to move upward. Subsequently, under the transmission force of the rear conveyor line 5, the inspected three-fold chassis body 1 is moved away. Finally, the above operation is repeated to continue to rotate and inspect the next three-fold chassis body 1.

[0026] In summary, through the design of the above structure, when the three-sided folded chassis body 1 enters the inspection area, it can be driven to rotate the chassis body 1 by a specific angle, turning the single-sided opening towards the direction of the front conveyor line 4. This allows the middle side industrial camera 3 to completely image the inner bending area, punching edge, and vertical surface of the chassis body 1 from an unobstructed angle. This structure breaks through the limitation of the traditional fixed dual-camera layout, which can only inspect chassis with folded sides. It can achieve automated identification of dead corner defects on the inner side of the three-sided folded chassis body 1 without changing workstations or manual flipping. This significantly improves the equipment's compatibility with chassis bodies 1 of different folded specifications. At the same time, by placing the side industrial camera 3 in the middle position, it can be used directly on the double-folded chassis body 1.

[0027] Based on the above embodiments, it was found during use that the above structure cannot perform visual inspection of the bottom surface of the three-fold chassis body 1. The perforated and flat areas of the bottom surface of the three-fold chassis body 1 are completely blocked. The fixed camera can only take pictures of the side and cannot image the bottom surface from below. The bottom surface is precisely the key part where stress is concentrated and microcracks are easily generated during the stamping of new materials such as magnesium-aluminum alloy chassis. Therefore, the above structure is difficult to meet the requirements of comprehensive inspection. In order to solve the above problems, further improvements were made to the above structure.

[0028] The lower inspection mechanism includes a bottom electric telescopic cylinder 38. A base frame 39 is fixedly connected to the bottom end of the inspection frame 6. A pair of bottom electric telescopic cylinders 38 are provided, and both bottom electric telescopic cylinders 38 are fixedly connected to the bottom end of the base frame 39. An inspection plate 40 is provided inside the inspection frame 6. The output end of the bottom electric telescopic cylinder 38 passes through the top end of the base frame 39 and is fixedly connected to the bottom end of the inspection plate 40. The inspection plate 40 is longitudinally slidably connected to the inside of the inspection frame 6. A lower industrial camera 41 is fixedly connected to the top end of the base frame 39. The top end of the inspection plate 40 is flush with the top end of the conveyor belts of the front conveyor line 4 and the rear conveyor line 5. An inspection hole 42 is opened through the top end of the inspection plate 40.

[0029] During the rotation of the three-fold chassis body 1 driven by the rotating mechanism, the bottom electric telescopic cylinder 38 can be activated to move the detection plate 40 downward, thereby removing the obstruction to the bottom of the three-fold chassis body 1. Then, the bottom of the three-fold chassis body 1 can be visually inspected by the lower industrial camera 41. After the three-fold chassis body 1 has rotated 180 degrees, the bottom electric telescopic cylinder 38 can be controlled to move the detection plate 40 upward and reset, so as to avoid hindering the normal movement of the three-fold chassis body 1 to be inspected later.

[0030] In summary, through the design of the above structure, during the rotation of the chassis body 1 while being held in place by the vacuum suction cup 26, the bottom electric telescopic cylinder 38 drives the detection plate 40 to move downward, thereby removing the obstruction to the bottom of the chassis body 1 and exposing the space below the chassis body 1. Subsequently, the industrial camera 41 takes an upward-looking photograph of the bottom surface of the chassis body 1 from the bottom for inspection. This structure effectively solves the blind spot problem in traditional inspection where the bottom surface of the chassis body 1 is obstructed by the support platform and cannot be imaged. It can effectively identify the bottom surface punching edges, planar scratches, and micro-cracks in the new material stamping, significantly improving the detection rate of defects on the bottom surface of the chassis body 1 with three-sided folded edges, eliminating the need for manual flipping for re-inspection.

[0031] Finally, it should be noted that the overhead industrial camera 2, side industrial camera 3, external industrial camera 33, and lower industrial camera 41 used in this solution all illuminate the surface of the chassis body 1 with a high-brightness light source, acquire images using CCD or CMOS sensors, convert them into digital signals and transmit them to the industrial control computer. The image processing software performs edge extraction, grayscale analysis and contour comparison on the acquired images, identifies surface scratches, cracks, deformations and other defects, and performs difference analysis with preset standard templates. When the defect features exceed the set threshold, they are judged as unqualified and the detection signal is automatically output.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0033] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A computer chassis visual inspection device, characterized in that, The system includes a chassis body (1), a top-mounted industrial camera (2), a side-mounted industrial camera (3), and a front conveyor line (4). A rear conveyor line (5) for conveying the chassis body (1) is provided behind the front conveyor line (4). A detection frame (6) is provided between the front conveyor line (4) and the rear conveyor line (5). A fixed frame (7) is fixedly connected to the top of the detection frame (6). A fixed ring (8) is fixedly connected to the bottom of the fixed frame (7). A rotating cylinder (9) is rotatably connected to the inner side of the fixed ring (8). A rotating ring (10) is fixedly connected to the bottom of the rotating cylinder (9). The side-mounted industrial camera (3) is equipped with a pair of The side industrial camera (3) is located below the rotating ring (10). A connecting plate (11) is fixedly connected between the top ends of the side industrial camera (3). The top ends of the front conveyor line (4) are provided with positioning guide rollers (12) for positioning the position of the chassis body (1). The top ends of the front conveyor line (4) are fixedly connected with a front bracket (13). The overhead industrial camera (2) is located on the front bracket (13). The rotating ring (10) is provided with a rotating mechanism for driving the chassis body (1) to rotate. The inspection frame (6) is also provided with a lower inspection mechanism for inspecting defects at the bottom of the chassis body (1).

2. The computer chassis visual inspection device according to claim 1, characterized in that, The inner side of the rotating ring (10) is rotatably connected to a disc (14). A pair of fixing plates (15) are fixedly connected between the top of the disc (14) and the bottom of the fixing frame (7). An upper electric telescopic cylinder (16) is fixedly connected to the top of the disc (14). The output end of the upper electric telescopic cylinder (16) passes through the disc (14) and is fixedly connected to the top of the connecting plate (11).

3. The computer chassis visual inspection device according to claim 1, characterized in that, The rotating mechanism includes a drive motor (17), which is fixedly connected to the top of the fixed ring (8). A gear ring (18) is fixedly connected to the outer wall of the rotating cylinder (9). A gear (19) is fixedly connected to the output end of the drive motor (17) through the bottom end of the fixed ring (8). The gear (19) meshes with the gear ring (18). A pair of sliding grooves (20) are opened through the top of the rotating ring (10). A sliding block (21) is slidably connected to the inner side of each sliding groove (20). A positioning plate (22) is fixedly connected to the bottom end of each sliding block (21). A side plate (23) is fixedly connected to both sides of the outer wall of the positioning plate (22). A horizontal plate (24) is fixedly connected to the side wall of each side plate (23). A lower electric telescopic cylinder (25) is fixedly connected to the top of the horizontal plate (24). A vacuum suction cup (26) for adsorbing the chassis body (1) is fixedly connected to the output end of the lower electric telescopic cylinder (25) through the bottom end of the horizontal plate (24).

4. The computer chassis visual inspection device according to claim 3, characterized in that, The side panels (23) are provided with L-shaped grooves (27) on their side walls. An L-shaped plate (28) is longitudinally slidably connected to the inside of the L-shaped grooves (27). A pull rod (29) for positioning and pulling the machine box body (1) is fixedly connected to the bottom of the L-shaped plate (28). The pull rod (29) is set through the bottom of the side panel (23). An upper spring (30) is fixedly connected between the top of the L-shaped groove (27) and the top of the L-shaped plate (28). A top plate (34) is fixedly connected to the inside of the fixing frame (7).

5. A computer chassis visual inspection device according to claim 3, characterized in that, The inner side of each slide groove (20) is rotatably connected to a threaded rod (31). The side wall of the rotating ring (10) is fixedly connected to a moving motor (32) relative to the side of the slide groove (20). The output end of the moving motor (32) passes through the inner side of the slide groove (20) and is fixedly connected to the side wall of the threaded rod (31). The threaded rod (31) is threadedly connected to the inner side wall of the sliding block (21).

6. A computer chassis visual inspection device according to claim 4, characterized in that, The top plate (34) is located at the front end of the inner wall of the fixed frame (7). Both ends of the rear side of the top plate (34) are fixedly connected to right-angled blocks (35) with inclined surfaces. The top of the side wall of the L-shaped plate (28) is fixedly connected to a top rod (36). The L-shaped groove (27) is provided with a vertical groove through one side. The L-shaped plates (28) are fixedly connected to each other with a movable plate (37) relative to the position inside the vertical groove.

7. A computer chassis visual inspection device according to claim 1, characterized in that, An external industrial camera (33) is fixedly connected through both sides of the inner wall of the mounting bracket (7). The external industrial camera (33) is located next to the outer wall of the chassis body (1).

8. A computer chassis visual inspection device according to claim 1, characterized in that, The lower detection mechanism includes a bottom electric telescopic cylinder (38), and a base frame (39) is fixedly connected to the bottom end of the detection frame (6). A pair of bottom electric telescopic cylinders (38) are provided, and both bottom electric telescopic cylinders (38) are fixedly connected to the bottom end of the base frame (39). A detection plate (40) is provided on the inner side of the detection frame (6). The output end of the bottom electric telescopic cylinder (38) passes through the top end of the base frame (39) and is fixedly connected to the bottom end of the detection plate (40). The detection plate (40) is longitudinally slidably connected to the inner side of the detection frame (6). A lower industrial camera (41) is fixedly connected to the top end of the base frame (39). The top end of the detection plate (40) is flush with the top end of the conveyor belt of the front conveyor line (4) and the rear conveyor line (5). A detection hole (42) is opened through the top end of the detection plate (40).

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