Visual inspection fixture and visual inspection apparatus thereof
Patent Information
- Application Number
- CN202522221639.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-10-21
AI Technical Summary
现有生产线多为单面检测，如需反面检测则依赖人工翻面，节拍慢、成本高；检测后工件常由拨杆直接推落，易与传送带边缘或相邻工件碰撞，造成二次损伤
本申请通过第一检测相机后方的拨片将正面检测不合格的产品拨到附加传送带，节约二次检测工序；检测夹具翻转工件进入第二传送带，第二检测相机后方的拨片将反面检测不合格的工件再次拨到附加传送带，从而将合格产品和不合格产品区分开，不合格产品的瑕疵面均朝上，方便人工再次检查；
Smart Images
Figure CN224861499U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of visual inspection technology, specifically relating to a visual inspection fixture and its visual inspection equipment. Background Technology
[0002] Machine vision inspection has gradually replaced manual visual inspection, becoming a key means to ensure product quality consistency. In industries such as 3C, semiconductors, and precision hardware, workpieces have extremely low tolerance for appearance defects, often requiring high-precision 2D or even 3D inspection of both sides. Existing production lines mostly perform single-sided inspection; if reverse inspection is required, manual flipping is necessary, resulting in slow cycle times and high costs. After inspection, workpieces are often directly pushed off by levers, easily colliding with the conveyor belt edge or adjacent workpieces, causing secondary damage. Summary of the Invention
[0003] To address the aforementioned problems, this utility model discloses a visual inspection fixture and its visual inspection equipment. The fixture has a simple structure. A lever behind the first inspection camera moves products that fail front-side inspection to an auxiliary conveyor belt, saving a secondary inspection step. The fixture then flips the workpiece onto a second conveyor belt, where a lever behind the second inspection camera moves workpieces that fail back-side inspection back to the auxiliary conveyor belt, thus separating qualified and unqualified products. The defective surfaces of unqualified products are always facing upwards, facilitating manual re-inspection.
[0004] To achieve the above objectives, the specific technical solution of this application is as follows: A visual inspection device includes a base with a worktable on it. The worktable has a first conveyor belt, an inspection fixture, a second conveyor belt, and an auxiliary conveyor belt. A frame is located above the worktable. A first inspection camera is located above the first conveyor belt, and a lever is located behind the first inspection camera. The inspection fixture rotates the workpiece. A second inspection camera is located above the second conveyor belt, and a lever is also located behind the second inspection camera. The auxiliary conveyor belt is parallel to and close to one side of the first and second conveyor belts.
[0005] Based on the above technical features, preferably, the paddle is threaded onto a threaded rod, which is driven to rotate by a second motor to move the paddle laterally, thereby pushing the workpiece to slide onto the additional conveyor belt.
[0006] Based on the above technical features, preferably, the frame of the additional conveyor belt is provided with a floating pressure strip on the side near the first and second conveyor belts. The floating pressure strip is connected to the frame through a leaf spring and is used to elastically press against the side edge of the adjacent conveyor belt to prevent the workpiece from getting stuck in the gap.
[0007] Based on the above technical features, furthermore, the frame is equipped with a position sensor, which is connected to the control system for the precise execution of the lever and the detection fixture.
[0008] A visual inspection fixture for use in the aforementioned visual inspection equipment includes an inspection fixture located on the same axis as the first and second conveyor belts. The inspection fixture includes a motor and an air pump. A pneumatic fixture is connected to the output shaft of the motor. A clamping block is connected to the output end of the pneumatic fixture. The output end of the air pump and the input end of the pneumatic fixture are connected through an air pipe.
[0009] Based on the above technical features, preferably, an electromagnetic brake is coaxially installed at the tail of the motor. When the electromagnetic brake is de-energized, it grips the motor shaft to lock the clamp position after the motor is flipped into place, thus preventing inertial swing-back.
[0010] Based on the above technical features, preferably, the inner side of the clamping block is provided with a rubber pad.
[0011] Compared with the prior art, the beneficial effects of this application are as follows: This application uses a lever behind the first inspection camera to move products that fail the front inspection to an auxiliary conveyor belt, saving a second inspection process; the inspection fixture flips the workpiece into the second conveyor belt, and the lever behind the second inspection camera moves the workpieces that fail the back inspection to the auxiliary conveyor belt again, thereby distinguishing between qualified and unqualified products. The defective side of the unqualified products is always facing upwards, which is convenient for manual re-inspection. The paddle uses a threaded rod structure, which has a large lateral thrust and can quickly push the workpiece to the auxiliary conveyor belt; the auxiliary conveyor belt is equipped with a leaf spring floating pressure strip on the side edge, which elastically fits with the main belt and completely avoids jamming. Attached Figure Description
[0012] Figure 1 This is a structural schematic diagram of a visual inspection fixture and its visual inspection equipment according to the present invention; Figure 2 This is a schematic diagram of the structure of the workbench in this utility model; Figure 3 This is a schematic diagram of the structure of the paddle in this utility model; List of identifiers in attached diagrams: 1. Base; 2. Workbench; 3. First conveyor belt; 4. Detection fixture; 401. Clamping block; 402. Motor; 403. Air pump; 404. Electromagnetic brake; 5. Second conveyor belt; 6. Additional conveyor belt; 7. Paddle; 8. First detection camera; 9. Second detection camera; 10. Threaded rod; 11. Motor II; 12. Position sensor. Detailed Implementation
[0013] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.
[0014] It should be noted that the terms "upper," "lower," "left," "right," "front," and "rear" used in the following description refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0015] like Figure 1 As shown, a visual inspection device includes a base 1, a worktable 2 on the base 1, a first conveyor belt 3, an inspection fixture 4, a second conveyor belt 5 and an auxiliary conveyor belt 6; the first conveyor belt 3 and the second conveyor belt 5 are coaxially arranged.
[0016] A frame is provided above the workbench 2, a first detection camera 8 is provided above the first conveyor belt 3, and a lever 7 is provided behind the first detection camera 8. The detection fixture 4 drives the workpiece to rotate. A second detection camera 9 is provided above the second conveyor belt 5, and a lever 7 is also provided behind the second detection camera 9. The auxiliary conveyor belt 6 is parallel to and close to the first conveyor belt 3 and the second conveyor belt 5 on one side.
[0017] The paddle 7 is threaded onto the threaded rod 10, which is driven to rotate by the motor 11 to move the paddle 7 laterally, thereby pushing the workpiece to slide onto the additional conveyor belt 6.
[0018] Preferably, the frame of the additional conveyor belt 6 is provided with a floating pressure strip on the side near the first conveyor belt 3 and the second conveyor belt 5. The floating pressure strip is connected to the frame through a leaf spring and is used to elastically press against the side edge of the adjacent conveyor belt to prevent the workpiece from getting stuck in the gap.
[0019] Furthermore, the frame is equipped with a position sensor 12, which is connected to the control system for the precise execution of the lever and the detection fixture.
[0020] A visual inspection fixture includes an inspection fixture 4, which is located on the same axis as the first conveyor belt 3 and the second conveyor belt 5. The inspection fixture includes a motor 402 and an air pump 403. A pneumatic fixture is connected to the output shaft of the motor. A clamping block 401 is connected to the output end of the pneumatic fixture. The output end of the air pump 402 and the input end of the pneumatic fixture are connected through an air pipe.
[0021] Preferably, an electromagnetic brake is coaxially mounted at the tail of the motor 402. When the electromagnetic brake is de-energized, it grips the motor shaft to lock the clamp position after the motor is flipped into place, thus preventing inertial swing-back.
[0022] Preferably, the inner side of the clamping block 401 is provided with a rubber pad.
[0023] In summary, this application has a simple structure. The first inspection camera uses a lever behind it to move products that fail the front inspection to an auxiliary conveyor belt, saving a second inspection step. The inspection fixture flips the workpiece into the second conveyor belt, and the lever behind the second inspection camera moves the workpieces that fail the back inspection to the auxiliary conveyor belt again, thereby separating qualified and unqualified products. The defective side of the unqualified products is always facing upwards, which is convenient for manual re-inspection.
[0024] It should be noted that the accompanying drawings merely illustrate the technical concept of the present invention and should not be used to limit the scope of protection of the present invention. For those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications fall within the scope of protection of the claims of the present invention.
Claims
1. A visual inspection device, characterized in that: The device includes a base, a worktable on the base, a first conveyor belt, a detection fixture, a second conveyor belt, and an auxiliary conveyor belt. A frame is located above the worktable. A first detection camera is located above the first conveyor belt, and a lever is located behind the first detection camera. The detection fixture drives the workpiece to rotate. A second detection camera is located above the second conveyor belt, and a lever is also located behind the second detection camera. The auxiliary conveyor belt is parallel to and close to one side of the first and second conveyor belts.
2. The visual inspection device according to claim 1, characterized in that: The paddle is threaded onto a threaded rod, which is driven to rotate by a motor to move the paddle laterally, thereby pushing the workpiece to slide onto the additional conveyor belt.
3. The visual inspection device according to claim 1, characterized in that: The additional conveyor belt has a floating pressure strip on the side of its frame near the first and second conveyor belts. The floating pressure strip is connected to the frame via a leaf spring and is used to elastically press against the side edge of the adjacent conveyor belt to prevent the workpiece from getting stuck in the gap.
4. The visual inspection device according to claim 1, characterized in that: The frame is equipped with a position sensor, which is connected to the control system for the precise execution of the lever and the detection fixture.
5. A visual inspection fixture applied to the visual inspection equipment of claim 1, characterized in that: The device includes a detection fixture, which is located on the same axis as the first and second conveyor belts of the vision inspection equipment. The detection fixture includes a motor and an air pump. A pneumatic fixture is connected to the output shaft of the motor. A clamping block is connected to the output end of the pneumatic fixture. The output end of the air pump and the input end of the pneumatic fixture are connected through an air pipe.
6. A visual inspection fixture according to claim 5, characterized in that: An electromagnetic brake is coaxially mounted at the tail of the motor. When the electromagnetic brake is de-energized, it grips the motor shaft to lock the clamp position after the motor is flipped into place, thus preventing inertial swing-back.
7. A visual inspection fixture according to claim 5, characterized in that: A rubber pad is provided on the inner side of the clamping block.