Camera vision detection device and method

Abstract

The invention provides a camera visual inspection device and method, and the device comprises a first rack which is movably disposed on one side of a detection station on a production line, and the detection station is used for placing a to-be-detected workpiece; the industrial camera is movably arranged on the first rack, and a lens of the industrial camera faces the to-be-detected workpiece; the first moving assembly is mounted on the first rack, and at least part of the first moving assembly is movably arranged; the first reflecting mirror assembly is installed on the moving part of the first moving assembly and located on the side, close to the to-be-detected workpiece, of the moving part so as to reflect an image of the to-be-detected workpiece to the industrial camera, and therefore the problem that in the prior art, when materials are sunken, stepped or inclined by a large angle or the like, the materials cannot be detected is solved; and a visual detection device is difficult to acquire side images.

Description

Technical Field

[0001] This invention relates to the field of visual inspection technology, and more specifically, to a camera visual inspection device and method. Background Technology

[0002] Currently, visual inspection systems are widely used in the incoming inspection of production materials. The target material often has multiple inspection points located on different planes and in different directions. The images of these inspection points are captured by industrial cameras and then judged by algorithms to determine whether they meet the inspection requirements.

[0003] In existing vision inspection devices, the camera takes multiple pictures as the material moves in a straight line to different positions to obtain images of the material in different poses. However, this device is limited by the fixed installation position of the camera. When the side of the material is not straight and has depressions, steps, or large-angle tilts, it is difficult to collect images of the side depressions and steps. The images of the large-angle side will also be severely distorted, affecting the detection accuracy. Summary of the Invention

[0004] The main objective of this invention is to provide a camera vision inspection device and method to solve the problem that in the prior art, when materials have depressions, steps, or large-angle tilts, the vision inspection device is unable to acquire side images.

[0005] To achieve the above objectives, according to one aspect of the present invention, a camera vision inspection apparatus is provided, comprising: a first frame movably disposed on one side of an inspection station on a production line, the inspection station being used to place a workpiece to be inspected; an industrial camera movably disposed on the first frame, the lens of the industrial camera being oriented toward the workpiece to be inspected; a first moving assembly mounted on the first frame, at least a portion of the first moving assembly being movably disposed; and a first reflector assembly mounted on a moving portion of the first moving assembly and located on the side of the moving portion closer to the workpiece to be inspected, for reflecting an image of the workpiece to the industrial camera.

[0006] Furthermore, the first reflector assembly also includes an upper reflector component, which includes an upper reflector, an upper lens mounting component, and an upper lens driving component. The upper lens mounting component is fixedly connected to the upper reflector, and the output end of the upper lens driving component is drivenly connected to the upper lens mounting component to drive the upper reflector to rotate.

[0007] Furthermore, the first reflector assembly also includes a lower reflector component, which includes a lower reflector, a lower lens mounting component, and a lower lens driving component. The lower lens mounting component is fixedly connected to the lower reflector, and the output end of the lower lens driving component is drivenly connected to the lower lens mounting component to drive the lower reflector to rotate.

[0008] Furthermore, the first reflector assembly also includes an upper reflector component and a lower reflector component arranged opposite to each other, with the upper reflector component and the lower reflector component arranged at a predetermined angle to form a reflective area that reflects the image of the workpiece to be inspected; wherein, the upper reflector of the upper reflector component and the lower reflector of the lower reflector component are rotatably arranged, and the rotation axis of the upper reflector and the rotation axis of the lower reflector are both parallel to the support base surface of the first frame.

[0009] Furthermore, the first reflector assembly also includes a reflector mounting plate, which includes a first plate and a second plate that are perpendicular to each other. The upper reflector component and the lower reflector component are both disposed on the first plate. The second plate is slidably connected to the moving part of the first moving assembly so that the first reflector assembly moves with the moving part.

[0010] Furthermore, the first moving assembly further includes: a first moving component, which extends along a first direction and includes a first transmission component and a first driving component. The first transmission component includes a first mounting plate, a first transmission screw, a first guide rod, and a first nut slider. The fixed end of the first driving component is mounted on the first mounting plate, and the output end of the first driving component is connected to the first transmission screw. The first transmission screw and the first mounting plate are rotatably connected relative to each other. The first guide rod is connected to the first mounting plate, and both the first guide rod and the first transmission screw are parallel to the first direction. The first nut slider is slidably sleeved on the first guide rod, and the first nut slider is threadedly connected to the first transmission screw. The first reflector assembly is fixedly connected to the first nut slider.

[0011] Furthermore, the first moving assembly also includes: a second moving component, which extends along a second direction and includes a second transmission component and a second drive component. The second transmission component includes a second mounting plate, a second transmission screw, a second guide rod, and a second nut slider. The second mounting plate is mounted on the first frame. The fixed end of the second drive component is mounted on the second mounting plate. The output end of the second drive component is connected to the second transmission screw. The second transmission screw and the second mounting plate are rotatably connected relative to each other. The second guide rod is connected to the second mounting plate. Both the second guide rod and the second transmission screw are parallel to the second direction. The second nut slider is slidably sleeved on the second guide rod and is threadedly connected to the second transmission screw. The first mounting plate is fixedly connected to the second nut slider.

[0012] Furthermore, the first moving component also includes a connecting component, which is connected to the first moving component and the second moving component respectively. The connecting component includes a first connecting plate and a second connecting plate arranged perpendicularly to each other, wherein the first connecting plate is parallel to the first direction and connected to the first mounting plate, and the second connecting plate is parallel to the second direction and fixedly connected to the second nut slider.

[0013] Furthermore, the camera vision inspection device also includes: a second frame, which is movably disposed on the other side of the inspection station and opposite to the first frame; an industrial camera mounted on the first frame and / or the second frame and located between the top of the first frame and the top of the second frame; a second moving assembly, which is mounted on the second frame and at least a portion of the second moving assembly is movably disposed; and a second reflector assembly, which is mounted on the moving portion of the first moving assembly and located on the side of the second moving assembly closer to the workpiece to be inspected, so as to reflect the image of the workpiece to be inspected toward the industrial camera.

[0014] In another aspect, the present invention provides a camera vision inspection method, including a camera vision inspection device, wherein the camera vision inspection device is the aforementioned camera vision inspection device; when the top surface and side surface of the workpiece to be inspected need to be photographed, the camera vision inspection method includes: moving a first frame to adjust the relative position between the first frame and the inspection station, so that the workpiece to be inspected arriving at the inspection station is within the coverage area of ​​the first frame; moving an industrial camera to adjust the position of the industrial camera on the first frame, so that the center field of view of the lens of the industrial camera can capture the top surface features of the workpiece to be inspected; adjusting the moving part of the first moving component and the first reflecting mirror assembly, so that the first side surface features of the workpiece to be inspected are reflected into the edge field of view of the industrial camera via the first reflecting mirror assembly; repeatedly adjusting the moving part of the first moving component and the first reflecting mirror assembly, so that the second side surface features of the workpiece to be inspected are reflected into the edge field of view of the industrial camera via the first reflecting mirror assembly.

[0015] Furthermore, when the workpiece to be inspected needs to be color-identified, the camera vision inspection method includes: moving the first frame to adjust the relative position between the first frame and the inspection station so that the workpiece to be inspected arriving at the inspection station is within the coverage area of ​​the first frame; adjusting the industrial camera, the moving part of the first moving component, and the first reflecting mirror assembly to capture the top surface features of the workpiece to be inspected that are closer to the industrial camera in the foreground of the industrial camera, and reflecting the side features of the workpiece to be inspected that are farther from the industrial camera in the background of the industrial camera by the first reflecting mirror assembly, so that the industrial camera can simultaneously acquire the top surface features and the side features in a single shot.

[0016] By applying the technical solution of this invention, the camera vision inspection device of this invention, through the movable design of the first frame, enables the camera vision inspection device to be flexibly adjusted according to the specific layout of the production line and the position of the workpiece to be inspected, thereby adapting to the inspection needs of different production lines. Furthermore, the industrial camera mounted on the first frame is also movable, allowing adjustment of the optimal shooting position according to the size and characteristics of the workpiece to be inspected, enhancing the adaptability of the inspection device. This invention, by providing a first moving component and a first reflecting mirror component, with the first reflecting mirror component mounted on the moving part of the first moving component and located on the side of the moving part closer to the workpiece to be inspected, allows for the detection of different side features of the workpiece to be inspected by adjusting the first moving component even after the first frame has been moved to a fixed position and locked. This effectively captures images of the side of the workpiece, solving the problem in existing technologies where vision inspection devices struggle to acquire side images when materials have depressions, steps, or large-angle tilts. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram showing a portion of the reference numerals of a camera vision inspection apparatus according to an embodiment of the camera vision inspection apparatus and method of the present invention is illustrated.

[0019] Figure 2 It shows Figure 1 A schematic diagram of another part of the labeled camera vision inspection device shown;

[0020] Figure 3 It shows Figure 1 The diagram shows a structural schematic of a workpiece being inspected, in which side features are reflected onto an industrial camera.

[0021] Figure 4 It shows Figure 1 A schematic diagram showing the reflection of another side feature of the workpiece to be inspected onto an industrial camera.

[0022] Figure 5 It shows Figure 4 This is a schematic diagram of another type of workpiece being inspected, showing the reflection of a second side feature onto an industrial camera.

[0023] The above figures include the following reference numerals:

[0024] 10. First frame; 20. Industrial camera; 30. First moving component; 40. First reflector assembly;

[0025] 100. Production line; 200. Inspection station; 300. Workpiece to be inspected; 400. Reflective area;

[0026] 410. Upper reflector assembly; 411. Upper reflector; 412. Upper lens mounting assembly; 413. Upper lens driving assembly;

[0027] 420. Lower reflector assembly; 421. Lower reflector; 422. Lower lens mounting assembly; 423. Lower lens driving assembly;

[0028] 430. Mirror mounting plate; 431. First plate; 432. Second plate;

[0029] 310. First moving component; 311. First transmission component; 312. First driving component;

[0030] 3111, First mounting plate; 3112, First transmission screw; 3113, First guide rod; 3114, First nut slider;

[0031] 320. Second moving component; 321. Second transmission component; 322. Second driving component;

[0032] 3211. Second mounting plate; 3212. Second transmission screw; 3213. Second guide rod; 3214. Second nut slider;

[0033] 330. Connecting component; 331. First connecting plate; 332. Second connecting plate. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] like Figures 1 to 5 As shown, in one embodiment of the camera vision inspection device of the present invention, the camera vision inspection device includes: a first frame 10, which is movably disposed on one side of an inspection station 200 on a production line 100, the inspection station 200 being used to place a workpiece 300 to be inspected; an industrial camera 20, which is movably disposed on the first frame 10, and the lens of the industrial camera 20 is positioned facing the workpiece 300 to be inspected; a first moving component 30, which is mounted on the first frame 10, and at least a portion of the first moving component 30 is movably disposed; and a first reflector assembly 40, which is mounted on the moving portion of the first moving component 30 and located on the side of the moving portion closer to the workpiece 300 to be inspected, so as to reflect an image of the workpiece 300 to the industrial camera 20.

[0036] Thus, the camera vision inspection device of the present invention, through the movable design of the first frame 10, allows the camera vision inspection device to be flexibly adjusted according to the specific layout of the production line 100 and the position of the workpiece 300 to be inspected, thereby adapting to the inspection needs of different production lines. The industrial camera 20 mounted on the first frame 10 is also movable, and can be adjusted to the optimal shooting position according to the size and characteristics of the workpiece 300 to be inspected, enhancing the adaptability of the inspection device. The present invention, by setting a first moving component 30 and a first reflecting mirror component 40, and mounting the first reflecting mirror component 40 on the moving part of the first moving component 30, and with the first reflecting mirror component 40 located on the side of the moving part closer to the workpiece 300 to be inspected, can achieve the detection of different side features of the workpiece 300 to be inspected by adjusting the first moving component 30 after the first frame 10 has been moved to a fixed position and locked, effectively capturing images of the side of the workpiece 300 to be inspected. This solves the problem in the prior art that the vision inspection device is difficult to collect side images when the material has depressions, steps, or large-angle tilts.

[0037] Optionally, the bottom of the first frame 10 in this invention is also provided with casters, which enable the first frame 10 to move easily between inspection stations 200, improving the mobility of the first frame 10. When the layout of the production line 100 is adjusted, the equipment is maintained, or the workpiece 300 to be inspected is replaced, the camera vision inspection device can be moved quickly without complicated manual handling or reinstallation, which greatly saves time and labor costs. In addition, the casters in this invention include a locking mechanism, which allows the operator to easily lock the first frame 10 after reaching the designated position, preventing it from moving during the inspection or production process, thus improving the convenience and safety of operation.

[0038] Optionally, the industrial camera 20 in this invention is also provided with a camera moving component. Through the camera moving component, the industrial camera 20 can be precisely aligned according to the specific features of the workpiece 300 to be inspected. Whether it is a top surface or a side surface feature, the image quality can be optimized by adjusting the position and angle of the industrial camera 20, thereby improving the accuracy of color recognition, defect detection, etc.

[0039] Preferably, at least a portion of the first moving component 30 is movably disposed along a first direction and a second direction that are perpendicular to each other, so as to approach the workpiece 300 to be inspected.

[0040] like Figure 1As shown, in a first embodiment of the first reflector assembly 40 of the present invention, the first reflector assembly 40 further includes an upper reflector component 410, which includes an upper reflector 411, an upper lens mounting member 412, and an upper lens driving member 413. The upper lens mounting member 412 is fixedly connected to the upper reflector 411, and the output end of the upper lens driving member 413 is drivenly connected to the upper lens mounting member 412 to drive the upper reflector 411 to rotate.

[0041] The rotation of the upper reflector 411 is precisely controlled by the upper mirror drive component 413. The camera vision inspection device of the present invention can adjust the angle of the upper reflector 411 as needed to ensure that the key features of the workpiece 300 to be inspected can be captured from any expected angle. For workpieces with recesses, steps or non-flat surfaces, the dynamic adjustment of the upper reflector component 410 allows the camera vision inspection device to respond to the specific shape of each workpiece 300 to be inspected. Even if some features of the workpiece 300 to be inspected are in a position that is not directly visible, the image can be directed to the industrial camera 20 by adjusting the angle of the upper reflector 411, which is crucial for inspecting workpieces with complex geometries.

[0042] In a second embodiment of the first reflector assembly 40 of the present invention, the first reflector assembly 40 further includes a lower reflector component 420, which includes a lower reflector 421, a lower lens mounting member 422 and a lower lens driving member 423. The lower lens mounting member 422 is fixedly connected to the lower reflector 421, and the output end of the lower lens driving member 423 is drivenly connected to the lower lens mounting member 422 to drive the lower reflector 421 to rotate.

[0043] Preferably, by adjusting the angle of the lower reflector 421, the incident path of the image can be optimized, ensuring that even light rays from the side or below can enter the camera at the optimal angle, thereby improving the clarity and quality of the image. This is especially important for target features that require high-precision image analysis. The introduction of the lower lens driving component 423 in this invention enables the lower reflector 421 to be dynamically adjusted according to different detection requirements. Whether detecting a flat side, a recessed area, or a side with a large angle of inclination, the most suitable reflection path can be obtained by precisely controlling the rotation of the lower reflector 421, thereby meeting the detection task.

[0044] In a third embodiment of the first reflector assembly 40 of the present invention, the first reflector assembly 40 further includes an upper reflector component 410 and a lower reflector component 420 disposed opposite to each other, the upper reflector component 410 and the lower reflector component 420 being disposed at a predetermined angle to form a reflective area 400 reflecting an image of the workpiece 300 to be inspected; wherein, the upper reflector 411 of the upper reflector component 410 and the lower reflector 421 of the lower reflector component 420 are respectively rotatably disposed, and the rotation axis of the upper reflector 411 and the rotation axis of the lower reflector 421 are both parallel to the support base surface of the first frame 10.

[0045] Preferably, the coordinated operation of the lower reflector component 420 and the upper reflector component 410 in this invention can achieve more complex optical path guidance. The lower reflector 421, as a second-level reflective surface, can receive the image reflected by the upper reflector 411 and further adjust its direction to ensure that the image accurately enters the field of view of the industrial camera 20. The combined use of the upper reflector 411 and the lower reflector 421 greatly expands the detection range and capability of the camera vision inspection device in this invention.

[0046] The predetermined angle design between the upper reflector 411 and the lower reflector 421 in this invention ensures that the image reflected from the workpiece 300 to be inspected can accurately enter the field of view of the industrial camera 20 after two reflections. This ensures that even if the workpiece 300 to be inspected has a complex shape or is in a non-directly visible position, its features can be fully captured, thereby improving the accuracy of image positioning and the comprehensiveness of inspection.

[0047] Specifically, in this invention, the upper reflector 411 and the lower reflector 421 are rotatably arranged, and their rotation axes are parallel to the support base surface of the first frame 10. The angles of the upper reflector 411 and the lower reflector 421 can be dynamically adjusted according to the characteristics of different workpieces 300 to be tested and the testing requirements.

[0048] like Figure 1 As shown, the first reflector assembly 40 also includes a reflector mounting plate 430. The reflector mounting plate 430 includes a first plate 431 and a second plate 432 that are perpendicular to each other. The upper reflector component 410 and the lower reflector component 420 are both disposed on the first plate 431. The second plate 432 is slidably connected to the moving part of the first moving assembly 30 so that the first reflector assembly 40 moves with the moving part.

[0049] The introduction of the reflector mounting plate 430 in this invention provides a more stable mounting base for the upper reflector component 410 and the lower reflector component 420. Furthermore, the first plate 431 and the second plate 432, which are perpendicular to each other, form a robust structure that maintains good stability even when the upper reflector component 410 and the lower reflector component 420 are adjusted in angle or moved with the first moving component 30, thereby reducing the risk of image blurring caused by vibration or movement.

[0050] like Figure 2 As shown, the first moving assembly 30 further includes a first moving component 310, which extends along a first direction and includes a first transmission component 311 and a first driving component 312. The first transmission component 311 includes a first mounting plate 3111, a first transmission screw 3112, a first guide rod 3113, and a first nut slider 3114. The fixed end of the first driving component 312 is mounted on the first mounting plate 3111, and the output end of the first driving component 312 is connected to the first transmission screw 3112. 12. The first transmission screw 3112 is rotatably connected to the first mounting plate 3111. The first guide rod 3113 is connected to the first mounting plate 3111. Both the first guide rod 3113 and the first transmission screw 3112 are parallel to the first direction. The first nut slider 3114 is slidably sleeved on the first guide rod 3113. The first nut slider 3114 is threadedly connected to the first transmission screw 3112. The first reflector assembly 40 is fixedly connected to the first nut slider 3114.

[0051] Optionally, the cooperation between the first transmission screw 3112 and the first drive component 312 enables precise position control of the first reflector assembly 40 along the first direction. The first drive component 312 drives the first transmission screw 3112 by outputting torque, and then acts on the first nut slider 3114 through the thread to achieve smooth and precise position adjustment, thereby improving the positioning accuracy and reliability of the camera vision inspection device.

[0052] Optionally, the presence of the first guide rod 3113 ensures the straightness and stability of the first reflector assembly 40 during movement, and the sliding of the first nut slider 3114 on the first guide rod 3113 enables it to move smoothly in a straight direction without being affected by lateral forces, which is crucial for the highly accurate features of the workpiece 300 to be inspected.

[0053] like Figure 2As shown, the first moving assembly 30 further includes a second moving component 320, which extends along a second direction and includes a second transmission component 321 and a second drive component 322. The second transmission component 321 includes a second mounting plate 3211, a second transmission screw 3212, a second guide rod 3213, and a second nut slider 3214. The second mounting plate 3211 is mounted on the first frame 10, and the fixed end of the second drive component 322 is mounted on the second mounting plate 3211. The output of the second drive component 322... The first end is connected to the second transmission screw 3212, which is rotatably connected to the second mounting plate 3211. The second guide rod 3213 is connected to the second mounting plate 3211, and both the second guide rod 3213 and the second transmission screw 3212 are parallel to the second direction. The second nut slider 3214 is slidably sleeved on the second guide rod 3213, and the second nut slider 3214 is threadedly connected to the second transmission screw 3212. The first mounting plate 3111 is fixedly connected to the second nut slider 3214.

[0054] Specifically, the second direction in this invention is a direction parallel to the support base surface of the first frame 10.

[0055] Preferably, the second moving part 320 is positioned along the second direction, which, combined with the first moving part 310's ability to move in the first direction, enables the first reflector assembly 40 to be flexibly adjusted in two-dimensional space. This capability enhances the adaptability of the camera vision inspection device when handling workpieces of different sizes, shapes, and positions, allowing the camera vision inspection device to more accurately align with the target inspection point and improve inspection efficiency and accuracy.

[0056] Specifically, such as Figure 2 As shown, the first moving component 310 further includes a connecting component 330, which is connected to the first moving component 310 and the second moving component 320 respectively. The connecting component 330 includes a first connecting plate 331 and a second connecting plate 332 arranged perpendicularly to each other. The first connecting plate 331 is parallel to the first direction and is connected to the first mounting plate 3111, and the second connecting plate 332 is parallel to the second direction and is fixedly connected to the second nut slider 3214.

[0057] Specifically, the first direction in this invention is a direction perpendicular to the support base surface of the first frame 10.

[0058] In this invention, the connecting component 330 forms a stable frame structure through the connection of the first connecting plate 331 to the first mounting plate 3111 and the fixed connection of the second connecting plate 332 to the second nut slider 3214, which ensures the stable movement of the first reflector assembly 40 in the first and second directions, reduces vibration and positional displacement caused by movement, and improves the stability of the detection process.

[0059] Specifically, the perpendicular arrangement of the first connecting plate 331 and the second connecting plate 332 ensures precise position control of the first reflector assembly 40 in two orthogonal directions, enabling the camera vision inspection device to more accurately align with the target inspection point, and ensuring high-precision inspection results even when facing complex workpieces.

[0060] Preferably, in another embodiment of the camera vision inspection device of the present invention, the camera vision inspection device further includes: a second frame, which is movably disposed on the other side of the inspection station 200 and opposite to the first frame 10; an industrial camera 20 is mounted on the first frame 10 and / or the second frame and is located between the top of the first frame 10 and the top of the second frame; a second moving assembly, which is mounted on the second frame and at least a portion of the second moving assembly is movably disposed; and a second reflector assembly, which is mounted on the moving portion of the first moving assembly and is located on the side of the second moving assembly closer to the workpiece 300 to be inspected, so as to reflect the image of the workpiece 300 to be inspected toward the industrial camera 20.

[0061] In this embodiment, by installing an industrial camera 20 between the first frame 10 and the second frame, and by movably setting it on the first frame 10 and the second frame, dual-view inspection of the workpiece 300 to be inspected can be achieved. It can not only detect the features directly above the workpiece 300, but also acquire images of the workpiece 300 from the side or a specific angle through the second reflector assembly, which greatly expands the field of view of the camera vision inspection device and improves the comprehensiveness and accuracy of the inspection.

[0062] Furthermore, the arrangement of the first frame 10 and the second frame allows the industrial camera 20 to simultaneously or alternately inspect the top and sides, reducing inspection time. By adjusting the position of the second reflector assembly through the second moving component, the switching from top to side inspection can be completed quickly, accelerating the inspection process and improving production efficiency.

[0063] like Figures 2 to 5As shown, the present invention also provides a camera vision inspection method, including a camera vision inspection device, wherein the camera vision inspection device is the aforementioned camera vision inspection device; when the workpiece 300 to be inspected needs to have its top surface and side surface captured, the camera vision inspection method includes: moving the first frame 10 to adjust the relative position between the first frame 10 and the inspection station 200, so that the workpiece 300 to be inspected arriving at the inspection station 200 is within the coverage area of ​​the first frame 10; moving the industrial camera 20 to adjust the position of the industrial camera 20 on the first frame 10, so that the center field of view of the lens of the industrial camera 20 can capture the top surface features of the workpiece 300 to be inspected; adjusting the moving part of the first moving component 30 and the first reflecting mirror assembly 40, so that the first side surface features of the workpiece 300 to be inspected are reflected into the edge field of view of the industrial camera 20 via the first reflecting mirror assembly 40; repeatedly adjusting the moving part of the first moving component 30 and the first reflecting mirror assembly 40, so that the second side surface features of the workpiece 300 to be inspected are reflected into the edge field of view of the industrial camera 20 via the first reflecting mirror assembly 40.

[0064] By moving the first frame 10 and adjusting the positions of the industrial camera 20 and the first reflector assembly 40, the camera vision inspection method of the present invention can capture the top and side features of the workpiece 300 to be inspected, providing a full-range inspection perspective, ensuring the comprehensiveness and integrity of the inspection. The center field of view of the lens of the industrial camera 20 can collect the top features, while the edge field of view can collect the first and second side features through reflection from the first reflector assembly 40. That is, multi-directional image data can be obtained in one shot, which greatly improves the inspection efficiency and reduces the waiting time in the production cycle.

[0065] Preferably, compared with the traditional solution that uses multiple cameras or multiple inspection stations, the present invention can complete the inspection of top and side features using only one industrial camera 20 and a set of reflector components, which significantly reduces hardware costs and equipment complexity and is beneficial to maintenance costs.

[0066] Furthermore, by adjusting the position of the first reflector assembly 40, the present invention ensures clear imaging of the side features, thereby optimizing the detection accuracy. No matter how complex the side features of the workpiece 300 to be inspected are, high-quality inspection images can be obtained through precise adjustment of the reflector angle, thus meeting the requirements of high-precision inspection.

[0067] Furthermore, when the workpiece 300 to be inspected needs to be color-identified, the camera vision inspection method includes: moving the first frame 10 to adjust the relative position between the first frame 10 and the inspection station 200 so that the workpiece 300 to be inspected arriving at the inspection station 200 is within the coverage area of ​​the first frame 10; adjusting the industrial camera 20, the moving part of the first moving component 30 and the first reflecting mirror component 40 so that the top surface features of the workpiece 300 closer to the industrial camera 20 are captured in the foreground of the industrial camera 20, and the side features of the workpiece 300 farther from the industrial camera 20 are reflected by the first reflecting mirror component 40 in the background of the industrial camera 20, so that the industrial camera 20 can simultaneously acquire the top surface features and the side surface features in a single shot.

[0068] This invention significantly improves the efficiency of color recognition by simultaneously capturing feature images of the top and side surfaces in a single shot. It eliminates the need for multiple shots or camera switching, greatly reducing detection time and increasing production speed and throughput of the production line.

[0069] Specifically, by adjusting the position and parameters of the industrial camera 20, it is possible to ensure that the top surface features of the workpiece 300 to be inspected are located in the foreground, while the side features are reflected in the background by the first reflector assembly 40. This configuration ensures that image quality suitable for color recognition can be obtained regardless of whether the features are located in front of or behind the camera, thereby improving the accuracy of color recognition.

[0070] Therefore, the present invention can detect top and side features using only one industrial camera 20 and a corresponding first reflector assembly 40, avoiding the high cost of using multiple cameras.

[0071] Preferably, in this invention, the upper lens driving component 413, the lower lens driving component 423, the first driving component 312, and the second driving component 322 use stepper motors, and the step angle and the number of pulses are used as parameters.

[0072] Preferably, for irregularly shaped workpieces 300 with protrusions that need to be avoided, the parameters of each component of the camera vision inspection device when it is in the avoidance pose are additionally recorded and bound to the workpiece model.

[0073] During production, for workpieces 300 with multiple features to be inspected or requiring high-definition image analysis such as contour extraction, the user selects a working template corresponding to the workpiece 300 through the operation interface; the camera vision inspection device automatically reads and applies the parameter settings for the workpiece model and each feature detection; preferably, the camera vision inspection device first adjusts to the avoidance posture recorded by the parameters corresponding to the workpiece model to ensure that it is not interfered with by the protrusions of the workpiece 300; subsequently, the production line 100 transports the workpiece 300 to the inspection station 200 and provides a trigger signal to the camera vision inspection device indicating that the workpiece 300 has arrived; after receiving the signal, the camera vision inspection device executes the parameters corresponding to the first feature in a preset order, and controls the upper lens drive component 413, the lower lens drive component 423, the first drive component 312, and the second drive component 322 to run to the optimal parameter state recorded by the operator in the early stage, at which time the position and angle of the upper reflector 411 and the lower reflector 421 are fixed; the industrial camera 20 automatically adjusts the parameters according to the adjusted parameters. Adjust the focusing distance and acquire a high-resolution image of the first detection feature of the workpiece 300 to be inspected; then, the camera vision inspection device sequentially executes the parameters corresponding to the second feature, repeating the above process to obtain a clear image of the second feature, until the images of all detection features are acquired; preferably, after completing the feature inspection of one workpiece 300 to be inspected, the camera vision inspection device automatically returns to the avoidance posture to prepare to receive the next camera vision inspection device; the production line 100 removes the workpiece that has been inspected and transports the next workpiece 300 to be inspected to the inspection station 200, repeating the above image acquisition and inspection steps; at the same time, the industrial control computer (not shown in the figure) receives and preliminarily processes the acquired image data, determines whether the workpiece meets the specifications through the built-in algorithm, and feeds back the inspection results to the production line 100, which summarizes and uploads them to the system for subsequent station processing of the inspection results; when changing the workpiece model, the user only needs to switch to the inspection template of the new workpiece with one click through the operation interface of the workpiece 300 to quickly complete the model switch without manually adjusting the equipment parameters.

[0074] The main inventive points of this invention include:

[0075] 1. A single industrial camera uses a pair of mirrors with adjustable motion parameters to detect complex shape features at multiple points:

[0076] Key technical points: By mapping the motor rotation parameters to the position and angle of the mirrors, and adjusting the parameters, the industrial camera can capture complex target features such as large-angle concave surfaces on the side and stepped surfaces parallel to the camera, without moving, even from its original position where it can capture top features. Simultaneously, by switching parameters, it can quickly switch between production material types, avoid protruding parts of incoming materials, and perform multi-target detection with a single industrial camera.

[0077] Innovation: The parameterization of the reflected light path facilitates adjustment and switching, enabling complex side feature detection, material avoidance, rapid model switching, and multi-target detection with a single industrial camera, which are not possible in existing technologies.

[0078] Technical benefits: Low cost with a single industrial camera; capable of inspecting multiple features on the top surface and complex sides at a single station, improving inspection efficiency; adaptable to irregularly shaped workpieces with protrusions.

[0079] 2. Two features, the top and side views, can be detected simultaneously with a single photograph:

[0080] Technical highlights: The central field of view of the industrial camera can detect the top of the workpiece while extending the edge field of view of the industrial camera to the complex sides of the material. By shortening the reflected light path length through the position of the reflector and adjusting the industrial camera and lens to a high depth-of-field configuration, it is ensured that the top features of the workpiece closer to the industrial camera are in the foreground of the industrial camera, while the side features reflected by the reflector farther away are in the background of the industrial camera. This allows for the simultaneous acquisition of feature images with moderate clarity of the top and sides in a single shot.

[0081] Innovation: By adjusting the optical path and configuring the depth of field, the industrial camera's central field of view covers the top surface of the workpiece to be inspected, while extending the edge field of view to the sides of the workpiece. This allows for multi-point inspection of simple targets with just one shot.

[0082] Technical benefits: Increases equipment cycle time and improves testing efficiency.

[0083] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0084] The camera vision inspection device of the present invention includes: a first frame 10, which is movably disposed on one side of an inspection station 200 on a production line 100, the inspection station 200 being used to place a workpiece 300 to be inspected; an industrial camera 20, which is movably disposed on the first frame 10, and the lens of the industrial camera 20 is positioned facing the workpiece 300 to be inspected; a first moving component 30, which is mounted on the first frame 10, and at least a portion of the first moving component 30 is movably disposed; and a first reflector assembly 40, which is mounted on the moving portion of the first moving component 30 and located on the side of the moving portion closer to the workpiece 300 to be inspected, so as to reflect an image of the workpiece 300 to the industrial camera 20.

[0085] As can be seen, the camera vision inspection device of the present invention, through the movable design of the first frame 10, allows the camera vision inspection device to be flexibly adjusted according to the specific layout of the production line 100 and the position of the workpiece 300 to be inspected, thereby adapting to the inspection needs of different production lines. The industrial camera 20 set on the first frame 10 is also movable, and can be adjusted to the optimal shooting position according to the size and characteristics of the workpiece 300 to be inspected, thereby enhancing the adaptability of the inspection device. The present invention, by setting a first moving component 30 and a first reflecting mirror component 40, and installing the first reflecting mirror component 40 on the moving part of the first moving component 30, and the first reflecting mirror component 40 being located on the side of the moving part closer to the workpiece 300 to be inspected, can achieve the detection of different side features of the workpiece 300 to be inspected by adjusting the first moving component 30 after the first frame 10 has been moved to a fixed position and locked, effectively capturing images of the side of the workpiece 300 to be inspected. This solves the problem in the prior art that the vision inspection device is difficult to collect side images when the material has depressions, steps, or large-angle tilts.

[0086] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0087] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0088] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0089] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0090] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A camera vision inspection device, characterized in that, include: A first frame (10) is movably disposed on one side of a testing station (200) on a production line (100), wherein the testing station (200) is used to place the workpiece (300) to be tested; An industrial camera (20) is movably mounted on the first frame (10), and the lens of the industrial camera (20) is positioned toward the workpiece (300) to be inspected. A first movable component (30) is mounted on the first frame (10), and at least a portion of the first movable component (30) is movably disposed; A first reflector assembly (40) is mounted on the moving part of the first moving assembly (30) and located on the side of the moving part closer to the workpiece to be inspected (300) to reflect an image of the workpiece to be inspected (300) to the industrial camera (20).

2. The camera vision inspection device according to claim 1, characterized in that, The first reflector assembly (40) further includes: The upper reflector component (410) includes an upper reflector (411), an upper lens mounting component (412), and an upper lens driving component (413). The upper lens mounting component (412) is fixedly connected to the upper reflector (411), and the output end of the upper lens driving component (413) is drivenly connected to the upper lens mounting component (412) to drive the upper reflector (411) to rotate.

3. The camera vision inspection device according to claim 1, characterized in that, The first reflector assembly (40) further includes: The lower reflector component (420) includes a lower reflector (421), a lower lens mounting component (422), and a lower lens driving component (423). The lower lens mounting component (422) is fixedly connected to the lower reflector (421), and the output end of the lower lens driving component (423) is drivenly connected to the lower lens mounting component (422) to drive the lower reflector (421) to rotate.

4. The camera vision inspection device according to claim 1, characterized in that, The first reflector assembly (40) further includes: The upper reflector component (410) and the lower reflector component (420) are arranged opposite to each other, and the upper reflector component (410) and the lower reflector component (420) are arranged at a predetermined angle to form a reflective area (400) that reflects the image of the workpiece (300) to be inspected; The upper reflector (411) of the upper reflector component (410) and the lower reflector (421) of the lower reflector component (420) are rotatably arranged, and the rotation axis of the upper reflector (411) and the rotation axis of the lower reflector (421) are both parallel to the support base of the first frame (10).

5. The camera vision inspection device according to claim 4, characterized in that, The first reflector assembly (40) further includes a reflector mounting plate (430), which includes a first plate (431) and a second plate (432) that are perpendicular to each other. The upper reflector component (410) and the lower reflector component (420) are both disposed on the first plate (431). The second plate (432) is slidably connected to the moving part of the first moving assembly (30) so that the first reflector assembly (40) moves with the moving part.

6. The visual inspection device according to claim 1, characterized in that, The first moving component (30) further includes: A first moving component (310) extends along a first direction and includes a first transmission component (311) and a first driving component (312). The first transmission component (311) includes a first mounting plate (3111), a first transmission screw (3112), a first guide rod (3113), and a first nut slider (3114). The fixed end of the first driving component (312) is mounted on the first mounting plate (3111), and the output end of the first driving component (312) is connected to the first transmission screw (3112). The first transmission screw (3112) and the first mounting plate (3111) are rotatably connected relative to each other. The first guide rod (3113) is connected to the first mounting plate (3111), and both the first guide rod (3113) and the first transmission screw (3112) are parallel to the first direction. The first nut slider (3114) is slidably sleeved on the first guide rod (3113) along the first guide rod (3113), and the first nut slider (3114) is threadedly connected to the first transmission screw (3112), and the first reflector assembly (40) is fixedly connected to the first nut slider (3114).

7. The visual inspection device according to claim 6, characterized in that, The first moving component (30) further includes: The second moving component (320) extends along the second direction and includes a second transmission component (321) and a second drive component (322). The second transmission component (321) includes a second mounting plate (3211), a second transmission screw (3212), a second guide rod (3213), and a second nut slider (3214). The second mounting plate (3211) is mounted on the first frame (10). The fixed end of the second drive component (322) is mounted on the second mounting plate (3211). The output end of the second drive component (322) is connected to the second transmission screw (3212). The second transmission screw (3212) and the second mounting plate (3211) are rotatably connected. The second guide rod (3213) is connected to the second mounting plate (3211). Both the second guide rod (3213) and the second transmission screw (3212) are parallel to the second direction. The second nut slider (3214) is slidably sleeved on the second guide rod (3213) along the second guide rod (3213), and the second nut slider (3214) is threadedly connected to the second transmission screw (3212). The first mounting plate (3111) is fixedly connected to the second nut slider (3214).

8. The visual inspection device according to claim 7, characterized in that, The first moving component (310) further includes: A connecting component (330) is connected to the first moving component (310) and the second moving component (320) respectively. The connecting component (330) includes a first connecting plate (331) and a second connecting plate (332) arranged perpendicularly to each other. The first connecting plate (331) is parallel to the first direction and connected to the first mounting plate (3111). The second connecting plate (332) is parallel to the second direction and fixedly connected to the second nut slider (3214).

9. The camera vision inspection device according to claim 1, characterized in that, The camera vision inspection device also includes: The second frame is movably disposed on the other side of the inspection station (200) and is disposed opposite to the first frame (10); The industrial camera (20) is mounted on the first frame (10) and / or the second frame and is located between the top of the first frame (10) and the top of the second frame; A second movable component is mounted on the second rack, and at least a portion of the second movable component is movably disposed; The second reflector assembly is mounted on the movable part of the first movable assembly and is located on the side of the second movable assembly closer to the workpiece to be inspected (300) to reflect the image of the workpiece to be inspected (300) to the industrial camera (20).

10. A camera vision inspection method, characterized in that, Includes a camera vision inspection device, wherein the camera vision inspection device is the camera vision inspection device according to any one of claims 1 to 9; When the workpiece (300) to be inspected needs to have its top and side surfaces photographed, the camera vision inspection method includes: Move the first frame (10) to adjust the relative position between the first frame (10) and the inspection station (200) so that the workpiece (300) to be inspected that arrives at the inspection station (200) is within the coverage area of ​​the first frame (10); Move the industrial camera (20) to adjust its position on the first frame (10) so that the center field of view of the lens of the industrial camera (20) can capture the top surface features of the workpiece (300) to be inspected; Adjust the moving part of the first moving component (30) and the first reflector assembly (40) so that the first side feature of the workpiece to be inspected (300) is reflected into the edge field of view of the industrial camera (20) via the first reflector assembly (40); Repeatedly adjust the moving portion of the first moving component (30) and the first reflector component (40) so that the second side feature of the workpiece to be inspected (300) is reflected into the edge field of view of the industrial camera (20) via the first reflector component (40).

11. The camera vision inspection method according to claim 10, characterized in that, When the workpiece (300) to be inspected needs to be color-identified, the camera vision inspection method includes: Move the first frame (10) to adjust the relative position between the first frame (10) and the inspection station (200) so that the workpiece (300) to be inspected that arrives at the inspection station (200) is within the coverage area of ​​the first frame (10); Adjust the moving part of the industrial camera (20), the first moving component (30), and the first reflecting mirror component (40) to capture the top surface features of the workpiece (300) closer to the industrial camera (20) in the foreground of the industrial camera (20), and reflect the side features of the workpiece (300) farther from the industrial camera (20) into the background of the industrial camera (20) by the first reflecting mirror component (40), so that the industrial camera (20) can simultaneously capture the top surface features and the side features in a single shot.

Images