Watch defect machine vision detection grading device

Abstract

The utility model relates to the technical field of watch defect visual inspection, in particular to a watch defect machine visual inspection grading device which comprises a workbench and a visual inspection device arranged above the workbench, and a detection platform used for placing watches is arranged below the visual inspection device. A conveying mechanism used for driving the detection platform to move is arranged at the bottom of the workbench, and a limiting mechanism is arranged on the detection platform; the limiting mechanism comprises two clamping jaws which move relatively, one end of each clamping jaw is provided with a V-shaped part, and a notch area matched with the watch is formed between the two V-shaped parts. According to the utility model, through the arrangement of the limiting mechanism, the two V-shaped parts are close to each other to clamp the watch, so that the watch is prevented from being misplaced or inclined in a uniform-speed movement process, and the detection grading efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection technology for watch defects, and specifically to a machine vision inspection and grading device for watch defects. Background Technology

[0002] A vision inspection device is a machine vision system used to inspect products or components. It typically consists of hardware (such as industrial cameras, light sources, and lenses) and software (image processing algorithms). Vision inspection devices can simulate human vision to identify, analyze, and detect defects or anomalies in products, thereby improving production efficiency and product quality. Vision inspection devices have wide applications in manufacturing, including size and shape inspection, surface quality inspection, position and orientation inspection, automatic sorting and identification, and product defect detection. Furthermore, machine vision inspection is unaffected by human factors and can accurately identify minute flaws, greatly improving the accuracy and consistency of inspection.

[0003] With the maturity of machine vision inspection technology, many research institutions and enterprises in China have applied it to the inspection and grading of watches. The working principle involves the watch moving at a constant speed beneath a vision inspection device. One or more line-scan cameras within the device scan the watch to capture images, identifying defects that do not conform to predetermined standards, such as scratches, dents, and uneven coloring. The images are then imported into a recognition model for defect detection and grading. However, in practical applications, the watch is placed directly on a conveyor belt and moves at a constant speed beneath the vision inspection device. Due to the lack of a limiting structure, the watch is prone to misalignment or tilting as it moves with the conveyor belt, increasing the difficulty of scanning and affecting the efficiency of inspection and grading. Summary of the Invention

[0004] To address the issue that when machine vision technology is applied to the inspection and grading of watches, where the watch is placed directly on a conveyor belt and moves at a constant speed below the vision inspection device, the lack of a limiting structure makes the watch prone to misalignment or tilting during movement, increasing the difficulty of scanning and inspection and affecting the efficiency of inspection and grading, this invention proposes a machine vision inspection and grading device for watches with defects. By setting a limiting mechanism, two V-shaped parts are brought close together to clamp the watch, preventing misalignment or tilting during constant speed movement and ensuring inspection and grading efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A machine vision inspection and grading device for watch defects includes a worktable and a vision inspection device mounted on the worktable. Below the vision inspection device is an inspection platform for placing the watch. A conveying mechanism for moving the inspection platform is located at the bottom of the worktable. A limiting mechanism is provided on the inspection platform; the limiting mechanism includes two relatively movable jaws, one end of which has a V-shaped portion, forming a notch area between the two V-shaped portions that matches the watch. When the watch is placed on the inspection platform, the platform moves the watch at a constant speed below the vision inspection device, and the two V-shaped portions bring the watch closer together, thus clamping the watch and preventing it from shifting or tilting during the uniform movement.

[0007] Furthermore, the limiting mechanism also includes a U-shaped base, which comprises a connecting plate and side plates disposed at both ends of the connecting plate. The two claws are slidably disposed on the two side plates respectively, and the connecting plate is provided with an adjustment component for driving the claws to move. By setting the adjustment component, the two claws can be driven to move closer or further apart.

[0008] Furthermore, the adjustment assembly includes a first connecting rod and a second connecting rod hinged at one end. A knob is threaded in the middle of the connecting plate, and a conical part is provided on the knob. A first bracket is provided on the connecting plate, and the first connecting rod is slidably mounted on the first bracket. The other end of the first connecting rod is provided with an inclined surface, which contacts the conical part of the knob. A second bracket is provided on the side plate, and the middle part of the second connecting rod is hinged to the second bracket. The other end of the second connecting rod is provided with a ball head. A baffle is provided at the other end of the pawl, and the ball head abuts against the baffle.

[0009] Furthermore, a spring is fitted onto the claw, and the two ends of the spring abut against the baffle and the side plate, respectively.

[0010] Furthermore, a pusher plate is installed on the conveying mechanism, and the detection platform is located on top of the pusher plate. A long groove is provided on the worktable for the pusher plate to pass through. When the conveying mechanism moves back and forth at a constant speed, the pusher plate drives the detection platform to move synchronously.

[0011] Furthermore, the conveying mechanism includes two conveying rollers positioned at both ends of the worktable along its length. The conveying rollers are rotatably connected to the worktable via a fixed frame. A conveyor belt is wound around the two conveying rollers. A push plate is fixedly mounted on the upper surface of the conveyor belt. A motor that drives the conveying rollers to rotate is fixed on the fixed frame, and the output shaft of the motor is connected to one of the conveying rollers. By electrically reversing the conveyor belt, reciprocating uniform movement is achieved.

[0012] Furthermore, a guide rail is fixedly installed on the upper surface of the worktable. Two guide rails are symmetrically distributed on both sides of the push plate, and a slider is slidably mounted on each guide rail. The slider is fixedly connected to the detection platform. The slider moves along the guide rail to determine the stability of the detection platform during movement.

[0013] Furthermore, rubber pads are bonded and fixed to the opposing surfaces of the two V-shaped portions.

[0014] The beneficial effects of this utility model through the above technical solution are as follows:

[0015] This utility model provides a machine vision inspection and grading device for watch defects. In use, the watch is placed on an inspection platform, which moves the watch at a constant speed below the vision inspection device. One or more line scan cameras in the vision inspection device scan the watch to achieve uniform inspection of the entire surface. By setting a limiting mechanism, two V-shaped parts are brought close together to clamp the watch, preventing it from being misaligned or tilted during the uniform movement, thus ensuring inspection and grading efficiency. In addition, the two V-shaped parts are moved away from each other to release the watch, improving the convenience of placing and picking up the watch during inspection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a machine vision inspection and grading device for watch defects according to the present invention;

[0017] Figure 2 This is a perspective view of the limiting mechanism in a machine vision inspection and grading device for watch defects according to this utility model.

[0018] Figure 3 This is a front view of the limiting mechanism in a machine vision inspection and grading device for watch defects according to this utility model.

[0019] Figure 4 This is a schematic diagram of the conveying mechanism in a machine vision inspection and grading device for watch defects according to this utility model;

[0020] Figure 5 This diagram shows the positional relationship between the conveying mechanism and the pusher plate in a machine vision inspection and grading device for watch defects according to this utility model.

[0021] The numbers in the attached diagram are:

[0022] 1. Workbench; 2. Vision inspection device; 3. Inspection platform; 4. Claw; 5. V-shaped part; 6. U-shaped seat; 601. Connecting plate; 602. Side plate; 7. Link 1; 8. Link 2; 9. Knob; 10. Conical part; 11. Support 1; 12. Support 2; 13. Ball head; 14. Baffle; 15. Spring; 16. Push plate; 17. Long groove; 18. Conveyor roller; 19. Fixing frame; 20. Conveyor belt; 21. Motor; 22. Guide rail; 23. Slider; 24. Rubber pad. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] like Figures 1-5 As shown, this embodiment provides a machine vision inspection and grading device for watch defects, including a worktable 1 and a vision inspection device 2 disposed above the worktable 1. A detection platform 3 for placing watches is disposed below the vision inspection device 2. A conveying mechanism for moving the detection platform 3 is disposed at the bottom of the worktable 1. A limiting mechanism is disposed on the detection platform 3. The limiting mechanism includes two relatively movable claws 4. One end of each claw 4 is provided with a V-shaped portion 5. A notch area matching the watch is formed between the two V-shaped portions 5.

[0025] This embodiment provides a machine vision inspection and grading device for watch defects. In use, the watch is placed on the inspection platform 3, and the inspection platform 3 moves the watch at a constant speed below the vision inspection device 2. One or more line scan cameras in the vision inspection device 2 scan the watch to achieve uniform inspection of the entire surface of the watch. By setting a limiting mechanism, the watch is clamped by two V-shaped parts 5 approaching each other, preventing the watch from being misaligned or tilted during the uniform speed movement. In addition, the watch is released by moving the two V-shaped parts 5 away from each other, improving the convenience of placing and picking up the watch during inspection.

[0026] In this embodiment, the limiting mechanism further includes a U-shaped seat 6, which includes a connecting plate 601 and side plates 602 disposed at both ends of the connecting plate 601. The two claws 4 are slidably disposed on the two side plates 602 respectively. The connecting plate 601 is provided with an adjustment component for driving the claws 4 to move. By setting the adjustment component, the two claws 4 can be driven to move closer or further apart.

[0027] Please refer to this again. Figure 2 and Figure 3The adjustment assembly includes a first connecting rod 7 and a second connecting rod 8 hinged at one end. A knob 9 is threaded in the middle of the connecting plate 601. A conical part 10 is provided on the knob 9. A bracket 11 is provided on the connecting plate 601. The first connecting rod 7 is slidably mounted on the bracket 11. The other end of the first connecting rod 7 is provided with an inclined surface, which contacts the conical part 10 of the knob 9. A second bracket 12 is provided on the side plate 602. The middle part of the second connecting rod 8 is hinged to the second bracket 12. A ball head 13 is provided at the other end of the second connecting rod 8. A baffle 14 is provided at the other end of the pawl 4. The ball head 13 abuts against the baffle 14. When the knob 9 is turned, the conical part 10 on the knob 9 drives the connecting rod 7 to slide on the bracket 11. Since the bracket 11 is hinged to the bracket 2 12, the connecting rod 7 pulls the connecting rod 2 8 to rotate on the bracket 2 12. The ball head 13 pushes the baffle 14 to move, which in turn drives the V-shaped part 5 at one end of the pawl 4 to move.

[0028] The claw 4 is fitted with a spring 15, the two ends of which abut against the baffle 14 and the side plate 602, respectively. When the knob 9 is rotated in the opposite direction, the baffle 14 moves backward under the elastic force of the spring 15, and the two V-shaped parts 5 move away from each other.

[0029] Please refer to this again. Figure 4 and Figure 5 The conveying mechanism is equipped with a push plate 16, and the detection platform 3 is located on top of the push plate 16. The workbench 1 has a long groove 17 for the push plate 16 to pass through. When the conveyor belt 20 moves back and forth at a constant speed, the push plate 16 drives the detection platform 3 to move synchronously.

[0030] Specifically, the conveying mechanism includes two conveying rollers 18, which are located at both ends of the workbench 1 along its length. The conveying rollers 18 are rotatably connected to the workbench 1 via a fixing frame 19. A conveyor belt 20 is wound around the two conveying rollers 18. A push plate 16 is fixedly mounted on the upper surface of the conveyor belt 20. A motor 21, which drives the conveying rollers 18 to rotate, is fixed on the fixing frame 19. The output shaft of the motor 21 is connected to one of the conveying rollers 18. Through electric forward and reverse rotation, the conveyor belt 20 reciprocates at a uniform speed.

[0031] In addition, guide rails 22 are fixedly installed on the upper surface of the worktable 1. Two guide rails 22 are provided and symmetrically distributed on both sides of the push plate 16. Slider blocks 23 are slidably mounted on the guide rails 22 and are fixedly connected to the detection platform 3. The sliders 23 move along the guide rails 22 to determine the stability of the detection platform 3 during movement.

[0032] In this embodiment, rubber pads 24 are bonded and fixed to the opposing surfaces of the two V-shaped portions 5. During the clamping process, the rubber pads 24 can fit tightly against the watch.

[0033] It is worth mentioning that in this embodiment, the visual inspection device 2 is connected to an image processing system. The watch moves at a constant speed below the visual inspection device 2, and one or more line scan cameras in the visual inspection device 2 scan it to achieve uniform inspection of the entire surface of the watch. Then, the image processing system processes the watch image collected by the visual inspection device 2, and then imports the image into the recognition model for defect detection and classifies the detected defects.

[0034] The working principle of this utility model is as follows:

[0035] When knob 9 is turned, the conical part 10 on knob 9 drives connecting rod 7 to slide on bracket 11. Since bracket 11 is hinged to bracket 22, connecting rod 7 pulls connecting rod 28 to rotate on bracket 22. Ball head 13 pushes baffle 14 and pawl 4 to move, and the two V-shaped parts 5 move closer to each other, clamping the mobile phone placed on the detection platform 3. Then, motor 21 is started, conveyor belt 20 moves at a constant speed, and watch moves at a constant speed under visual inspection device 2 to achieve subsequent detection and classification. In addition, when knob 9 is turned in the opposite direction, the watch is released by moving the two V-shaped parts 5 away from each other, improving the convenience of placing and picking up the watch during detection.

[0036] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A machine vision inspection and grading device for watch defects, comprising a worktable (1) and a vision inspection device (2) disposed above the worktable (1), characterized in that, Below the visual inspection device (2) is an inspection platform (3) for placing watches. The bottom of the workbench (1) is provided with a conveying mechanism for moving the inspection platform (3). The inspection platform (3) is provided with a limiting mechanism. The limiting mechanism includes two relatively movable claws (4). One end of the claw (4) is provided with a V-shaped part (5). A notch area matching the watch is formed between the two V-shaped parts (5).

2. The machine vision inspection and grading device for watch defects according to claim 1, characterized in that, The limiting mechanism also includes a U-shaped seat (6), which includes a connecting plate (601) and side plates (602) disposed at both ends of the connecting plate (601). The two claws (4) are slidably disposed on the two side plates (602) respectively. The connecting plate (601) is provided with an adjustment component for driving the claws (4) to move.

3. The machine vision inspection and grading device for watch defects according to claim 2, characterized in that, The adjustment assembly includes a connecting rod 1 (7) and a connecting rod 2 (8) hinged at one end. A knob (9) is threaded in the middle of the connecting plate (601). A conical part (10) is provided on the knob (9). A bracket 1 (11) is provided on the connecting plate (601). The connecting rod 1 (7) is slidably mounted on the bracket 1 (11). An inclined surface is provided at the other end of the connecting rod 1 (7). The inclined surface of the connecting rod contacts the conical part (10) of the knob (9). A bracket 2 (12) is provided on the side plate (602). The middle part of the connecting rod 2 (8) is hinged on the bracket 2 (12). A ball head (13) is provided at the other end of the connecting rod 2 (8). A baffle (14) is provided at the other end of the pawl (4). The ball head (13) abuts against the baffle (14).

4. The machine vision inspection and grading device for watch defects according to claim 3, characterized in that, A spring (15) is fitted on the claw (4), and the two ends of the spring (15) abut against the baffle (14) and the side plate (602) respectively.

5. The machine vision inspection and grading device for watch defects according to claim 1, characterized in that, The conveying mechanism is equipped with a push plate (16), the detection platform (3) is set on the top of the push plate (16), and the workbench (1) is provided with a long groove (17) for the push plate (16) to pass through.

6. The machine vision inspection and grading device for watch defects according to claim 5, characterized in that, The conveying mechanism includes two conveying rollers (18) located at both ends of the workbench (1) along its length. The conveying rollers (18) are rotatably connected to the workbench (1) via a fixed frame (19). A conveyor belt (20) is wound around the two conveying rollers (18). A push plate (16) is fixedly mounted on the upper surface of the conveyor belt (20). A motor (21) that drives the conveying rollers (18) to rotate is fixed on the fixed frame (19). The output shaft of the motor (21) is connected to one of the conveying rollers (18).

7. The machine vision inspection and grading device for watch defects according to claim 1, characterized in that, The workbench (1) is fixedly mounted with guide rails (22). There are two guide rails (22) symmetrically distributed on both sides of the push plate (16). A slider (23) is slidably mounted on the guide rails (22). The slider (23) is fixedly connected to the detection platform (3).

8. The machine vision inspection and grading device for watch defects according to claim 1, characterized in that, Rubber pads (24) are glued and fixed to the opposite surfaces of the two V-shaped portions (5).

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