A wide-field visual inspection device

Abstract

This utility model relates to the field of industrial inspection, and more particularly to a wide-field-of-view visual inspection device, comprising a first mounting frame and a movable frame. A linear motor is fixedly connected to the upper outer wall of the first mounting frame, and the output shaft of the linear motor is fixedly connected to the upper outer wall of the movable frame. A guide rail is provided at the lower end of the movable frame, and a movable block is provided within the guide rail. A through groove is provided on one side of the outer wall of the movable frame, and a second rotary motor is embedded in the movable block. The output shaft of the second rotary motor is fixedly connected to the rotation center of a gear. A rack is provided on the upper surface of the through groove, and the gear is located within the through groove. This device utilizes a multi-dimensional adaptive supplementary lighting system and a dual-camera, dual-sided synchronous inspection structure to achieve dynamic optimization of lighting conditions and full-surface, blind-angle-free inspection of the workpiece, solving the problems of existing devices lacking flexible supplementary lighting adjustment capabilities and a comprehensive inspection field of view.

Description

Technical Field

[0001] This utility model relates to the field of industrial inspection, and in particular to a wide-field visual inspection device. Background Technology

[0002] In the field of industrial inspection, the requirements for inspecting the appearance and dimensions of workpieces are becoming increasingly stringent, especially for small and medium-sized workpieces produced in batches, where both inspection efficiency and accuracy must be balanced. Existing vision inspection equipment often suffers from limited fields of view; single-camera or fixed-view designs struggle to cover the entire surface of the workpiece, easily leading to missed inspections of areas such as the lower surface and side edges. Furthermore, most supplementary lighting systems operate in a fixed mode, unable to dynamically adjust according to changes in ambient light or workpiece material (such as reflective or transparent parts), resulting in insufficient image clarity and high rates of false positives and false negatives. In addition, some equipment relies on manual adjustment of the inspection position, which is cumbersome when adapting to workpieces of different sizes, making it difficult to meet the continuous inspection needs of automated production lines and hindering improvements in production efficiency and quality control. Therefore, there is an urgent need for a wide-field-of-view, adaptively illuminated, and highly efficient inspection device to solve these problems.

[0003] A search revealed patent publication number CN222505476U, which discloses a rotary visual inspection device, comprising: an inspection table; a moving mechanism mounted on the front end of the top of the inspection table; an adjustment box fixedly mounted on the top of the moving mechanism; an inspection turntable rotatably connected to the top of the adjustment box; multiple sets of fixing mechanisms fixedly mounted on the top of the inspection turntable; a support column fixedly mounted on the rear end of the top of the inspection table; an adjustment plate slidably connected to the inner side of the support column; a visual inspection machine fixedly mounted on the front end of the adjustment plate; and a range display frame fixedly mounted on the front end of the adjustment plate and below the visual inspection machine. The moving mechanism includes a first motor fixedly mounted on the right end of the top of the inspection table, and a first lead screw fixedly mounted on the drive end of the first motor. The beneficial effects of this invention are: it can improve the inspection efficiency and stability of the rotary visual inspection device.

[0004] While existing technologies can achieve certain detection effects, they suffer from drawbacks such as a lack of flexible lighting adjustment capabilities and a comprehensive detection field of view. In view of this, we propose a wide-field-of-view visual inspection device that solves the above problems. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a large field-of-view visual inspection device.

[0006] The technical solution of this utility model is as follows: A large field of view visual inspection device includes a first mounting frame and a movable frame. A linear motor is fixedly connected to the upper outer wall of the first mounting frame. The output shaft of the linear motor is fixedly connected to the upper outer wall of the movable frame. A guide rail is provided at the lower end of the movable frame. A movable block is provided in the guide rail. A through groove is provided on one side of the outer wall of the movable frame. A second rotary motor is embedded in the movable block. The output shaft of the second rotary motor is fixedly connected to the rotation center of a gear. A rack is provided on the upper groove surface of the through groove. The gear is located in the through groove. Driving the second rotary motor can change the position of the movable block. The gear meshes with the rack.

[0007] When using one of the large-field-of-view visual inspection devices in this solution, the workpiece to be inspected is placed on a glass stage. The machine body is started to rotate the glass stage, and the workpiece is inspected as it passes between a corresponding set of industrial cameras. During this process, the photosensor monitors the ambient light intensity in real time and transmits the data to the controller. The controller controls the linear motor, the first rotary motor, and the second rotary motor to adjust the position of the moving block. The linear motor can change the height of the moving frame, thereby changing the height of the supplementary light. The first rotary motor can change the rotation angle of the controller, thereby changing the longitudinal illumination angle of the supplementary light. The second rotary motor can control the position of the moving block on the guide rail, thereby changing the lateral position of the supplementary light.

[0008] Preferably, a second mounting bracket is fixedly connected to the lower outer wall of the movable block. The second mounting bracket is connected to the rotating rod via a bearing. A first rotating motor is fixedly connected to one side of the outer wall of the second mounting bracket. The output shaft of the first rotating motor is fixedly connected to the rotation center of one end of the rotating rod. The first rotating motor can change the longitudinal illumination angle of the supplementary light.

[0009] Preferably, a controller is fixedly connected to the outer wall of the rotary rod, and a supplementary light and a light sensor are fixedly connected to the lower outer wall of the controller. The controller is connected to the driving device through a circuit.

[0010] Preferably, the first mounting bracket is fixedly connected to the upper outer wall of the workbench, an upper industrial camera is fixedly connected to the upper end of the first mounting bracket, and a lower industrial camera is fixedly connected to the lower end of the first mounting bracket. The upper and lower industrial cameras perform combined detection of the workpiece to improve the detection effect.

[0011] Preferably, an organic body is fixedly connected to the upper outer wall of the worktable, the output shaft of the organic body is fixedly connected to the rotation center of the rotating column, and a glass stage is fixedly connected to the upper end of the rotating column, the upper surface of the glass stage being used to support the workpiece to be tested.

[0012] Preferably, the glass stage is located between the upper industrial camera and the lower industrial camera, and the glass stage is located below the moving frame. The height setting of the glass stage ensures that the industrial camera and the fill light can effectively capture unobstructed, high-definition images and provide supplementary lighting for the workpiece carried above.

[0013] Compared with existing technologies, the advantages of this utility model are: I. This utility model combines a multi-dimensional adjustable supplementary lighting system with a dual-camera detection structure. It can achieve precise adjustment of the supplementary light in height, lateral position, and longitudinal angle through a linear motor, a first rotating motor, and a second rotating motor. With the real-time feedback of the light sensor, it can achieve adaptive optimization of illumination. It can also use upper and lower industrial cameras to perform dual-sided synchronous detection of the workpiece, which greatly improves the clarity of image acquisition and the comprehensiveness of detection. It can adapt to the detection needs of workpieces of different sizes and types.

[0014] Second, based on the first beneficial effect, with the cooperation of the rotating glass stage for conveying workpieces, this utility model can realize continuous automated inspection of batch workpieces, reduce manual intervention, not only improve inspection efficiency, but also reduce the rate of missed detection and false detection through stable lighting conditions and comprehensive inspection perspective, significantly improving the inspection accuracy and production quality control level.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view schematic diagram of the present utility model; Figure 3 This is a cross-sectional view of the present invention; Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of structure A in the middle; Figure 5 For the present utility model Figure 3 Enlarged schematic diagram of the B-structure; Figure 6 This is a cross-sectional schematic diagram of the movable block of this utility model.

[0017] Figure label: 1. Linear motor; 2. First mounting bracket; 3. Moving bracket; 4. Worktable; 5. Upper industrial camera; 6. Glass stage; 7. Lower industrial camera; 8. Machine body; 9. Rotating column; 10. Rack; 11. Moving block; 12. Gear; 13. Second mounting bracket; 14. Rotating rod; 15. Fill light; 16. Light sensor; 17. First rotary motor; 18. Second rotary motor; 19. Through slot; 20. Guide rail; 21. Controller. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] Example 1 Please see Figures 1-6 As shown, this embodiment is a large-field-of-view visual inspection device, including a first mounting frame 2 and a movable frame 3. A linear motor 1 is fixedly connected to the upper outer wall of the first mounting frame 2. The output shaft of the linear motor 1 is fixedly connected to the upper outer wall of the movable frame 3. A guide rail 20 is provided at the lower end of the movable frame 3. A movable block 11 is provided in the guide rail 20. A through groove 19 is provided on one side of the outer wall of the movable frame 3. A second rotary motor 18 is embedded in the movable block 11. The output shaft of the second rotary motor 18 is fixedly connected to the rotation center of the gear 12. A rack 10 is provided on the upper groove surface of the through groove 19. The gear 12 is located in the through groove 19. In use, driving the second rotary motor 18 can drive the gear 12 to rotate. Through the meshing transmission between the gear 12 and the rack 10, the movable block 11 moves laterally along the guide rail 20, thereby adjusting the lateral position of the supplementary light 15 and the light sensor 16 to adapt to the lighting requirements of different inspection areas.

[0023] Example 2 Please see Figures 1-6As shown, this embodiment, based on embodiment 1, further includes: a second mounting bracket 13 fixedly connected to the lower outer wall of the moving block 11; the second mounting bracket 13 connected to the rotating rod 14 via bearings; a first rotating motor 17 fixedly connected to one side outer wall of the second mounting bracket 13; the output shaft of the first rotating motor 17 fixedly connected to the rotation center of one end of the rotating rod 14; in use, starting the first rotating motor 17 can drive the rotating rod 14 to rotate, thereby driving the controller 21 and the supplementary light 15 and the photosensitive sensor 16 at the lower end to rotate synchronously, realizing the adjustment of the longitudinal illumination angle of the supplementary light 15, ensuring that the light can be accurately projected onto the part of the workpiece to be inspected.

[0024] A controller 21 is fixedly connected to the outer wall of the rotary rod 14. A fill light 15 and a light sensor 16 are fixedly connected to the lower outer wall of the controller 21. During use, the light sensor 16 monitors the ambient light intensity above the glass stage 6 in real time and transmits the signal to the controller 21. The controller 21 automatically adjusts the brightness of the fill light 15 according to preset parameters to ensure stable lighting conditions when the industrial camera is shooting and improve the image acquisition quality.

[0025] The first mounting bracket 2 is fixedly connected to the upper outer wall of the worktable 4. An upper industrial camera 5 is fixedly connected to the upper end of the first mounting bracket 2, and a lower industrial camera 7 is fixedly connected to the lower end of the first mounting bracket 2. In use, the upper industrial camera 5 captures images of the upper surface of the workpiece from above the glass stage 6, and the lower industrial camera 7 captures images of the lower surface of the workpiece through the transparent glass stage 6. The upper and lower cameras work together to achieve simultaneous detection of both sides of the workpiece, improving detection efficiency and completeness.

[0026] The upper outer wall of the worktable 4 is fixedly connected to the body 8. The output shaft of the body 8 is fixedly connected to the rotation center of the rotating column 9. The upper end of the rotating column 9 is fixedly connected to the glass stage 6. In use, the rotating device and power supply are integrated inside the body 8. The body 8 drives the rotating column 9 to rotate at a uniform speed, which drives the glass stage 6 and the workpiece to be inspected carried above to rotate synchronously, so that the workpieces can pass through the inspection area of ​​the industrial camera in sequence, realizing continuous automatic inspection of batch workpieces.

[0027] The glass stage 6 is located between the upper industrial camera 5 and the lower industrial camera 7. The glass stage 6 is located below the moving frame 3. When in use, the height of the glass stage 6 ensures that the upper industrial camera 5 has a sufficient field of view to cover the upper surface of the workpiece, and the lower industrial camera 7 can clearly capture the features of the lower surface of the workpiece. At the same time, the light from the supplementary light 15 can shine on the workpiece without obstruction, providing the best lighting environment for image acquisition.

[0028] Instructions for use: When using this device, place the workpiece to be inspected on the glass stage 6, start the machine body 8 to rotate the glass stage 6, and the workpiece is inspected as it passes through the corresponding set of industrial cameras. During this process, the photosensor 16 monitors the ambient light intensity in real time and transmits the data to the controller 21. The controller 21 controls the linear motor 1, the first rotary motor 17, and the second rotary motor 18 to adjust the position of the moving block 11. The linear motor 1 can change the height of the moving frame 3, thereby changing the height of the supplementary light 15. The first rotary motor 17 can change the rotation angle of the controller 21, thereby changing the longitudinal illumination angle of the supplementary light 15. The second rotary motor 18 can control the position of the moving block 11 on the guide rail 20, thereby changing the lateral position of the supplementary light 15.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A large field of view vision inspection apparatus comprising a first mounting frame (2) and a moving frame (3), characterized in that: A linear motor (1) is fixedly connected to the upper outer wall of the first mounting bracket (2). The output shaft of the linear motor (1) is fixedly connected to the upper outer wall of the moving bracket (3). The lower end of the moving bracket (3) is provided with a guide rail (20). A moving block (11) is provided in the guide rail (20). A through groove (19) is provided on one side of the outer wall of the moving bracket (3). A second rotating motor (18) is embedded in the moving block (11). The output shaft of the second rotating motor (18) is fixedly connected to the rotation center of the gear (12). A rack (10) is provided on the upper groove surface of the through groove (19). The gear (12) is located in the through groove (19).

2. The wide-field-of-view visual inspection device according to claim 1, characterized in that: The lower outer wall of the movable block (11) is fixedly connected to a second mounting bracket (13). The second mounting bracket (13) is connected to the rotating rod (14) through a bearing. The outer wall of one side of the second mounting bracket (13) is fixedly connected to a first rotating motor (17). The output shaft of the first rotating motor (17) is fixedly connected to the rotation center of one end of the rotating rod (14).

3. The wide-field-of-view visual inspection device according to claim 2, characterized in that: A controller (21) is fixedly connected to the outer wall of the rotary rod (14), and a fill light (15) and a light sensor (16) are fixedly connected to the lower outer wall of the controller (21).

4. The wide-field-of-view visual inspection device according to claim 1, characterized in that: The first mounting bracket (2) is fixedly connected to the upper outer wall of the workbench (4), and an upper industrial camera (5) is fixedly connected to the upper end of the first mounting bracket (2), and a lower industrial camera (7) is fixedly connected to the lower end of the first mounting bracket (2).

5. The wide-field-of-view visual inspection device according to claim 4, characterized in that: The upper outer wall of the workbench (4) is fixedly connected to the body (8), the output shaft of the body (8) is fixedly connected to the rotation center of the rotating column (9), and a glass table (6) is fixedly connected to the upper end of the rotating column (9).

6. The wide-field-of-view visual inspection device according to claim 5, characterized in that: The glass stage (6) is located between the upper industrial camera (5) and the lower industrial camera (7), and the glass stage (6) is located below the moving frame (3).

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