A visual detection device for the size of the shape and hole of a plate
Patent Information
- Application Number
- CN202522421835.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-14
AI Technical Summary
[0002]板材外形和孔位检测是板材加工质量管控的核心环节，针对家具制造、建筑装饰等行业的板材产品，精准核验关键尺寸参数以保障后续装配精度与使用效果，孔位检测包括孔径大小、孔位坐标、孔距公差、孔的数量及完整性，杜绝漏孔、偏孔、孔径偏差等问题，保障连接件安装顺畅，常规的板材尺寸检测都是人工用卷尺测量，误差大，效率低，板材的孔位用人工就更难以检测，有些公司做过简单的视觉检测工作台，但那只能检测一些外形比较小的门板抽屉板之类虽然也能检测孔位尺寸，但有可检测规格少，效率低，工人强度大的缺点
1、通过设置视觉检测机构，可以在工作时实现板材正反面检测，底部相机光源与顶部相机光源提供均匀高亮照明，消除板材底面反光与纹理干扰，底部相机配合顶部相机，逐行采集板材表面图像，精准捕捉孔位细节，保障板材外形轮廓与正反面孔位成像清晰，捕捉外形尺寸与孔位信息，采集的图像实时传输至视觉检测主机，为后续算法分析、合格性判断提供高质量图像数据，实现高精度检测，因此提高了板材的检测效率。
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Figure CN224894875U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sheet metal processing technology, and more specifically, to a through-type visual inspection device for the shape and hole positions of sheet metal. Background Technology
[0002] Inspection of board shape and hole position is a core aspect of board processing quality control. For board products in industries such as furniture manufacturing and building decoration, accurate verification of key dimensional parameters is crucial to ensure subsequent assembly precision and performance. Hole position inspection includes hole diameter, hole position coordinates, hole spacing tolerance, number and completeness of holes, eliminating issues such as missing holes, off-center holes, and hole diameter deviations, ensuring smooth installation of connectors. Conventional board size inspection is done manually with a tape measure, which is prone to errors and inefficient. Manually inspecting the hole position of boards is even more difficult. Some companies have implemented simple visual inspection workbenches, but these can only inspect smaller items such as door panels and drawer panels. While they can inspect hole dimensions, they have drawbacks such as limited inspectable specifications, low efficiency, and high labor intensity. Utility Model Content
[0003] To overcome the above deficiencies, this utility model provides a through-type visual inspection device for the dimensions of sheet metal shape and hole positions that overcomes or at least partially solves the above technical problems.
[0004] This utility model is implemented as follows: This utility model provides a visual inspection device for the shape and hole size of a through-type sheet metal, including a visual inspection host, an infeed conveyor installed on the left side of the visual inspection host, a barcode scanner installed on the top outside the infeed conveyor, an outfeed conveyor installed on the right side of the visual inspection host, and a labeling machine installed on the top front side of the outfeed conveyor. A visual inspection agency, comprising: Bottom camera light source; the bottom camera light source is installed on the top left side of the vision inspection host, and a bottom camera located at the bottom of the bottom camera light source is installed on the left side of the vision inspection host; Top camera light source; the top camera light source is installed on the left side of the bottom inside the visual inspection host, a camera lifting frame is installed on the left side inside the visual inspection host, and a top camera is installed on the left side of the camera lifting frame; Material pressure roller mechanism; the material pressure roller mechanism is movably connected to both sides inside the vision inspection host via axle pins.
[0005] In a preferred embodiment, the material pressure roller mechanism includes a cylinder frame, a mounting base, an adjusting handle, a pressure roller, an adjusting spring, and a locking handle. The cylinder frame is movably connected to both sides inside the vision inspection host via a pivot pin. The mounting base is sleeved and connected to the outside of the cylinder frame. The adjusting handle is threaded to the top of the mounting base. The pressure roller is movably connected to the outside of the mounting base via a pivot pin. The adjusting spring is sleeved on the outside of the adjusting handle. The locking handle is threaded to the outside of the inside of the mounting base.
[0006] In a preferred embodiment, a narrow synchronous belt conveyor located at the bottom of the pressure roller is installed on the rear side of the top of the vision inspection host, and a wide synchronous belt conveyor located at the bottom of the pressure roller is installed on the front side of the top of the vision inspection host.
[0007] In a preferred embodiment, a vertical fine-tuning platform is mounted on the left side of the visual inspection host, located to the right of the bottom camera, and the left side of the vertical fine-tuning platform is connected to the right side of the bottom camera.
[0008] In a preferred embodiment, a left-right rotation fine-tuning platform is installed on the left side of both the camera lifting frame and the vertical fine-tuning platform, and a front-back angle fine-tuning platform is installed on the left side of the left-right rotation fine-tuning platform. The left side of the front-back angle fine-tuning platform is fixedly connected to the right side of the bottom camera and the top camera, respectively.
[0009] In a preferred embodiment, a dust cover is fitted onto the top of the outer side of the bottom camera, and a high-definition quartz lens is fixedly connected to the top of the dust cover.
[0010] In a preferred embodiment, a display is mounted on the front side of the vision inspection host, and the display is electrically connected to the vision inspection host via wires for use.
[0011] In a preferred embodiment, the narrow synchronous belt conveyor and the wide synchronous belt conveyor are respectively aligned with the feed conveyor and the discharge conveyor at their ends.
[0012] This utility model provides a through-type visual inspection device for the shape and hole positions of sheet metal, the beneficial effects of which include: 1. By setting up a vision inspection mechanism, the front and back of the board can be inspected during operation. The bottom and top camera light sources provide uniform and bright illumination, eliminating reflections and texture interference on the bottom of the board. The bottom camera works with the top camera to collect images of the board surface line by line, accurately capturing hole details and ensuring clear imaging of the board's outline and front and back hole positions. It captures the shape, size and hole information, and transmits the collected images to the vision inspection host in real time, providing high-quality image data for subsequent algorithm analysis and qualification judgment, thus achieving high-precision inspection and improving the inspection efficiency of the board.
[0013] 2. By setting up a material pressure mechanism, the medium can be pressed down on both sides of the visual inspection host to stabilize the plate, ensuring the stability of the plate position during the conveying and inspection process. This avoids deviation and shaking of the plate during conveying and inspection, which would affect the subsequent visual inspection of the plate by the top and bottom cameras, thus improving the conveying stability of the plate.
[0014] 3. By setting up narrow synchronous belt conveyors and wide synchronous belt conveyors, the narrow belt is suitable for small-sized plates during operation, while the wide belt carries large-sized plates. Both provide stable and uniform conveying power, avoiding deviation and slippage during plate conveying, thus improving the inspection and conveying effect of the vision inspection host on the plates. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model; Figure 2 A left-view stereoscopic structure diagram of the visual inspection host provided for an embodiment of this utility model; Figure 3 A left-view stereoscopic structure diagram of the bottom camera provided for an embodiment of this utility model; Figure 4 A left-view stereoscopic structural diagram of the top camera provided for an embodiment of this utility model; Figure 5 A right-side perspective three-dimensional structural diagram of the cylinder frame provided for an embodiment of this utility model; In the diagram: 1. Vision inspection host; 2. Feeding end conveyor; 3. Barcode scanner; 4. Discharge end conveyor; 5. Labeling machine; 6. Bottom camera light source; 7. Bottom camera; 8. Top camera light source; 9. Camera lifting frame; 10. Top camera; 11. Cylinder frame; 12. Mounting base; 13. Adjusting handle; 14. Pressure roller; 15. Adjusting spring; 16. Locking handle; 17. Narrow synchronous belt conveyor; 18. Wide synchronous belt conveyor; 19. Up and down fine-tuning platform; 20. Left and right rotation fine-tuning platform; 21. Front and rear angle fine-tuning platform; 22. Dustproof cover; 23. High-definition quartz lens; 24. Monitor. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0018] Reference Figures 1-5 This utility model provides a technical solution: a through-type visual inspection device for the shape and hole position of sheet metal, including a visual inspection host 1 and a visual inspection mechanism. A feeding end conveyor 2 is installed on the left side of the visual inspection host 1, and a barcode scanner 3 is installed on the top outside the feeding end conveyor 2. A discharging end conveyor 4 is installed on the right side of the visual inspection host 1, and a labeling machine 5 is installed on the top front side of the discharging end conveyor 4. It can realize the inspection of the front and back sides of the sheet metal during operation. The bottom camera light source 6 and the top camera light source 8 provide uniform and bright illumination to eliminate reflection and texture interference on the bottom surface of the sheet metal. The bottom camera 7 works with the top camera 10 to collect images of the sheet metal surface line by line, accurately capture hole position details, ensure clear imaging of the shape outline and front and back hole positions of the sheet metal, capture shape size and hole position information, and transmit the collected images to the visual inspection host 1 in real time, providing high-quality image data for subsequent algorithm analysis and qualification judgment, realizing high-precision inspection, thus improving the inspection efficiency of sheet metal.
[0019] Reference Figures 1-5In a preferred embodiment, the visual inspection mechanism includes a bottom camera light source 6, which is mounted on the top left side of the visual inspection host 1. A bottom camera 7 is mounted on the left side of the visual inspection host 1, located below the bottom camera light source 6. A top camera light source 8 is mounted on the left side of the bottom inside the visual inspection host 1. A camera lifting frame 9 is mounted on the left side inside the visual inspection host 1, and a top camera 10 is mounted on the left side of the camera lifting frame 9. A material pressure roller mechanism is movably connected to both sides inside the visual inspection host 1 via axle pins. The feed end conveyor 2 transports the external sheet material. At this time, the top camera light source 8 and the bottom camera light source 6 illuminate the upper and lower surfaces of the sheet material so that the bottom camera 7, in conjunction with the top camera 10, can collect and detect the holes and surface images on the sheet material surface, enabling the visual inspection host 1 to inspect the external sheet material. The material pressure roller mechanism includes a cylinder frame 11, a mounting base 12, an adjusting handle 13, a pressure roller 14, an adjusting spring 15, and a locking handle 16. The cylinder frame 11 is movably connected to both sides inside the vision inspection host 1 via a shaft pin. The mounting base 12 is sleeved and connected to the outside of the cylinder frame 11. The adjusting handle 13 is threaded to the top of the mounting base 12. The pressure roller 14 is movably connected to the outside of the mounting base 12 via a shaft pin. The adjusting spring 15 is sleeved on the outside of the adjusting handle 13. The locking handle 16 is threaded to the outside of the inside of the mounting base 12. It can apply force to the plate and press down to stabilize the medium on both sides of the vision inspection host 1, ensuring the stability of the plate position during the plate conveying and inspection process. It avoids the plate shifting and shaking during the conveying and inspection process, which would affect the subsequent visual inspection of the plate by the top camera 10 and the bottom camera 7. Therefore, it improves the conveying stability of the plate.
[0020] Reference Figures 2-5 In a preferred embodiment, a narrow synchronous belt conveyor 17 located at the bottom of the pressure roller 14 is installed on the rear side of the top of the vision inspection host 1, and a wide synchronous belt conveyor 18 located at the bottom of the pressure roller 14 is installed on the front side of the top of the vision inspection host 1. During operation, the narrow belt is adapted to small-sized plates, and the wide belt carries large-sized plates. Both provide stable and uniform conveying power, avoiding deviation and slippage during plate conveying. Therefore, the inspection and conveying effect of the vision inspection host 1 on the plates is improved. A vertical fine-tuning platform 19 located to the right of the bottom camera 7 is installed on the left side of the vision inspection host 1. The left side of the vertical fine-tuning platform 19 is connected to the right side of the bottom camera 7. It can precisely adjust the vertical height of the bottom camera 7. Through fine adjustments, the camera lens can maintain the optimal shooting distance with the bottom surface of the plate. At the same time, it can correct the camera installation deviation and ensure that the shooting angle is perpendicular to the surface of the plate, improving the clarity and accuracy of image acquisition. Therefore, the inspection effect of the bottom camera 7 is improved.
[0021] Reference Figures 2-4In a preferred embodiment, a left-right rotation fine-tuning platform 20 is installed on the left side of both the camera lifting frame 9 and the vertical fine-tuning platform 19. A front-back angle fine-tuning platform 21 is installed on the left side of each of the left-right rotation fine-tuning platforms 20. The left sides of the front-back angle fine-tuning platforms 21 are fixedly connected to the right sides of the bottom camera 7 and the top camera 10, respectively. This allows for adjustment of the horizontal rotation angle and the front-back tilt angle of the bottom camera 7 and the top camera 10. Through precise fine-tuning, installation deviations between the top camera 10 and the bottom camera 7 can be corrected, ensuring that the lens remains perpendicular to the surface of the substrate and eliminating imaging distortion caused by shooting angle shift. Therefore, the performance of the top camera 10 and the bottom camera 7 is improved. The bottom camera 7 is positioned so that a dust cover 22 is attached to the top of its outer side. A high-definition quartz lens 23 is fixedly connected to the top of the dust cover 22. This effectively prevents dust and debris generated during the material transport process from entering the bottom camera 7, avoiding direct contact between the bottom camera 7 and external material dust and debris. The high-definition quartz lens 23 has excellent light transmittance and does not affect the image acquisition quality. It also isolates the bottom camera 7 lens from dust contamination and is easy to clean, requiring only periodic wiping. This provides a clear and stable imaging environment for the bottom camera 7, thus improving its protective effect.
[0022] Reference Figure 2 In a preferred embodiment, a display 24 is installed on the front side of the vision inspection host 1. The display 24 is electrically connected to the vision inspection host 1 via wires and can be used in conjunction with it to display the operating status of the vision inspection host 1, the board inspection parameters, and the inspection result data in real time. It also supports manual operation interaction, so that the staff can set inspection standards, adjust working parameters, and view historical inspection records. This allows the operator to keep abreast of the equipment's operating status, quickly handle non-conforming products, ensure a smooth and efficient inspection process, and provide intuitive support for production quality control. Therefore, it improves the convenience of data observation, understanding, and control of the vision inspection host 1. The narrow synchronous belt conveyor 17 and the wide synchronous belt conveyor 18 are respectively aligned with the feed end conveyor 2 and the discharge end conveyor 4 at both ends, which can assist the vision inspection host 1 in receiving and conveying the board during the inspection process. This allows the board to pass through the vision inspection host 1 more smoothly for line-of-sight inspection and avoids discontinuous conveying during board inspection. Therefore, it improves the board receiving, inspection, and conveying effect of the vision inspection host 1.
[0023] Specifically, the working process or principle of this through-type visual inspection equipment for the shape and hole positions of sheet metal is as follows: During use, when the sheet metal is fed into the feed conveyor 2 by the upstream conveyor, the barcode scanner 3 scans the sheet metal markings, converting the specification information into electrical signals and transmitting them to the industrial control computer of the host machine. The industrial control computer synchronously retrieves the corresponding detection parameter library, completes the pre-configuration of algorithms, shooting frequency, etc. The feed conveyor 2 drives the sheet metal forward, triggering the feed sensor in the area of the bottom camera 7. The bottom camera 7 is linked with the conveyor encoder, taking one frame per line of images of the bottom surface of the sheet metal according to the conveying speed. The bottom camera light source 6 provides synchronous supplementary lighting. After pre-processing, the image is transmitted to the industrial control computer in real time. After the sheet metal has completely passed through, the discharge sensor triggers the bottom camera 7 to stop. The industrial control computer stitches the images and analyzes the hole position parameters of the bottom surface of the sheet metal using algorithms to determine if they are qualified. The sheet metal continues to be conveyed to the left pressure roller 14 of the visual inspection host 1. The cylinder frame 11 drives the pressure roller 14 to press down and adhere to the sheet metal. The adjusting spring 15 provides cushioning to avoid damage. The height of the pressure roller 14 is fixed by the locking handle 16. The gripping force of the pressure roller 14 ensures that the board enters the top inspection area horizontally without deviation. At this time, the industrial control computer selects and switches between the narrow synchronous belt conveyor 17 and the wide synchronous belt conveyor 18 according to the data provided by the barcode scanner 3 to receive and transport the board. After triggering the area sensor of the top camera 10, the camera lifting frame 9 drives the top camera 10 to rise and fall to the optimal shooting distance according to the thickness of the board. The top camera light source 8 provides supplementary lighting. The top camera 10 and the encoder are linked to capture the front image. After preprocessing and stitching, the algorithm analyzes whether the shape and size and front hole position are qualified. After the inspection is completed, the board is smoothly fed into the discharge end conveyor 4 by the pressure roller 14 on the right side of the vision inspection host 1. When it runs under the labeling machine 5, the industrial control computer transmits the inspection results: qualified boards are released directly, and unqualified boards are started to affix red labels. At the same time, the red warning light and buzzer remind the operator to handle the problem. Finally, the board is sent to the next process by the discharge end conveyor 4.
[0024] It should be noted that the feeding end conveyor 2, barcode scanner 3, discharging end conveyor 4, labeling machine 5, bottom camera light source 6, bottom camera 7, top camera light source 8, camera lifting frame 9, top camera 10, cylinder frame 11, narrow synchronous belt conveyor 17, wide synchronous belt conveyor 18, up and down fine adjustment platform 19, left and right rotation fine adjustment platform 20, front and back angle fine adjustment platform 21, and display 24 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. Their power supply, specific composition, and principle are clear to those skilled in the art, so they will not be described in detail.
Claims
1. A through-type visual inspection device for the shape and hole position of sheet metal, comprising a visual inspection host (1), an infeed conveyor (2) installed on the left side of the visual inspection host (1), a barcode scanner (3) installed on the top outside the infeed conveyor (2), an outfeed conveyor (4) installed on the right side of the visual inspection host (1), and a labeling machine (5) installed on the top front side of the outfeed conveyor (4), characterized in that... ； A visual inspection agency, comprising: Bottom camera light source (6); The bottom camera light source (6) is installed on the top left side of the visual inspection host (1), and a bottom camera (7) located at the bottom of the bottom camera light source (6) is installed on the left side of the visual inspection host (1). Top camera light source (8); The top camera light source (8) is installed on the left side of the bottom of the visual inspection host (1), and a camera lifting frame (9) is installed on the left side of the visual inspection host (1), and a top camera (10) is installed on the left side of the camera lifting frame (9). Material pressure roller mechanism; the material pressure roller mechanism is movably connected to both sides inside the vision inspection host (1) via axle pins.
2. The through-type visual inspection device for the shape and hole positions of sheet metal according to claim 1, characterized in that, The material pressure roller mechanism includes a cylinder frame (11), a mounting base (12), an adjusting handle (13), a pressure roller (14), an adjusting spring (15), and a locking handle (16). The cylinder frame (11) is movably connected to both sides inside the vision inspection host (1) via a shaft pin. The mounting base (12) is sleeved and connected to the outside of the cylinder frame (11). The adjusting handle (13) is threaded to the top of the mounting base (12). The pressure roller (14) is movably connected to the outside of the mounting base (12) via a shaft pin. The adjusting spring (15) is sleeved on the outside of the adjusting handle (13). The locking handle (16) is threaded to the outside of the inside of the mounting base (12).
3. The through-type visual inspection device for the shape and hole positions of sheet metal according to claim 2, characterized in that, A narrow synchronous belt conveyor (17) located at the bottom of the pressure roller (14) is installed on the rear side of the top of the vision inspection host (1), and a wide synchronous belt conveyor (18) located at the bottom of the pressure roller (14) is installed on the front side of the top of the vision inspection host (1).
4. The through-type visual inspection device for the shape and hole positions of sheet metal according to claim 1, characterized in that, The left side of the visual inspection host (1) is equipped with an up-down fine adjustment platform (19) located to the right of the bottom camera (7), and the left side of the up-down fine adjustment platform (19) is connected to the right side of the bottom camera (7).
5. The through-type visual inspection device for the shape and hole positions of sheet metal according to claim 4, characterized in that, The camera lifting frame (9) and the left and right rotation fine adjustment platform (20) are both installed on the left side of the upper and lower fine adjustment platform (19). The left and right rotation fine adjustment platform (20) is installed on the left side of the front and rear angle fine adjustment platform (21). The left side of the front and rear angle fine adjustment platform (21) is fixedly connected to the right side of the bottom camera (7) and the top camera (10) respectively.
6. The through-type visual inspection device for the shape and hole positions of sheet metal according to claim 1, characterized in that, A dust cover (22) is fitted on the top of the outer side of the bottom camera (7), and a high-definition quartz lens (23) is fixedly connected to the top of the dust cover (22).
7. The through-type visual inspection device for the shape and hole positions of sheet metal according to claim 1, characterized in that, A display (24) is installed on the front side of the visual inspection host (1), and the display (24) is electrically connected to the visual inspection host (1) through wires for use.
8. The through-type visual inspection device for the shape and hole positions of sheet metal according to claim 3, characterized in that, The narrow synchronous belt conveyor (17) and the wide synchronous belt conveyor (18) are respectively aligned with the feed end conveyor (2) and the discharge end conveyor (4).