Detection device and defect detection equipment
By using staggered multi-light source components and motion switching of shooting modules in the detection device, the problem that a single light source cannot meet diverse detection needs is solved, and efficient defect detection effects and cost reduction are achieved.
Patent Information
- Application Number
- CN202422737277.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In the existing technology, a single light source is difficult to meet the diverse needs of visual inspection, resulting in limited detection effects.
A light source assembly including a first light source, a second light source and a third light source is adopted. The light sources are staggered and switched through the movement of the shooting module, providing multiple lighting modes to enrich the detection effect while simplifying the device structure.
Flexible switching of different light sources is achieved, the effect and efficiency of defect detection are improved, and the cost of the detection device is reduced.
Smart Images
Figure CN223332914U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of defect detection technology, and in particular to a detection device and defect detection equipment. Background Art
[0002] During the processing and production process, both semi-finished and finished products are routinely inspected for defects before assembly or shipment to screen out defective products. Currently, visual inspection primarily relies on cameras and other visual detectors combined with light sources. However, different light sources provide varying illumination effects for visual inspection, making a single light source insufficient for sufficient inspection needs and requiring urgent improvement. Utility Model Content
[0003] Based on this, it is necessary to provide a detection device and defect detection equipment to address the problem that a single light source is difficult to meet the detection requirements when using vision for defect detection.
[0004] On one hand, the present application provides a detection device, which includes a bracket, a light source assembly and a shooting module. The light source assembly includes a first light source and a second light source, and the first light source and the second light source are staggered on the bracket; the shooting module is movably provided on the bracket to move to a position aligned with the first light source and a position aligned with the second light source.
[0005] In one embodiment, the first light source and the second light source are arranged sequentially in a first direction, and the shooting module is movably provided on the bracket along the first direction; the light source assembly further includes a third light source, the first light source is provided with a hollow light-transmitting area, and the third light source is movably provided on the bracket along the first direction to move to a position aligned with and staggered with the hollow light-transmitting area.
[0006] In one embodiment, the first light source includes a plurality of lighting components, which are evenly spaced in the circumferential direction around a reference axis and enclose the hollow light-transmitting area; when the shooting module is aligned with the first light source, the optical axis of the shooting module coincides with the reference axis.
[0007] In one embodiment, the lighting component is rotatably mounted on the bracket to adjust the light output angle.
[0008] In one embodiment, the optical axis of the camera module extends along a second direction, the second direction intersects the first direction, and the first light source, the second light source, and the third light source are disposed at different positions along the second direction.
[0009] In one embodiment, the bracket includes a connecting plate and a support member, a plurality of the support members are arranged on the connecting plate at intervals along the second direction, and each of the support members extends along the first direction; the shooting module, the first light source and the third light source are respectively arranged on different support members, and the second light source is arranged on the connecting plate.
[0010] In one embodiment, the first light source is configured as a combined bar light source; and / or the second light source is configured as a coaxial light source; and / or the third light source is configured as a stripe light source.
[0011] In one embodiment, the first light source, the second light source, and the third light source are configured as light sources of different types.
[0012] In one embodiment, the shooting module and the light source assembly corresponding to the shooting module providing lighting are referred to as a shooting module, and a plurality of the shooting modules are spaced apart and arranged on the bracket.
[0013] In one embodiment, the bracket includes a supporting plate and a gantry, the light source assembly and the shooting module are both arranged on the supporting plate, the gantry is provided with a receiving groove, and the gantry is also provided with a first slide rail, the number of the first slide rails is at least two and they are respectively provided on both sides of the receiving groove, and the supporting plate slides in cooperation with the first slide rail; the detection device also includes a first driving unit, the first driving unit is at least partially provided in the receiving groove and connected to the supporting plate to drive the supporting plate to slide.
[0014] On the other hand, the present application further provides a defect detection device, which includes a transfer device and the detection device as described above, wherein the transfer device is used to carry a workpiece and move the workpiece into the detection range of the detection device.
[0015] In the above-described inspection device, the first and second light sources each provide illumination for the camera module, enabling the camera module to achieve different imaging effects, thereby fully detecting potential defects in the workpiece. Furthermore, the camera module can be moved to a position aligned with the first light source and another position aligned with the second light source. This eliminates the need for two camera modules, each corresponding to a different light source, simplifying the inspection device's structure and reducing its cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is an axial schematic diagram of a detection device provided in one embodiment of the present application.
[0017] Figure 2 for Figure 1A schematic axial view of the bracket, light source assembly and camera module in the detection device shown.
[0018] Figure 3 for Figure 2 A side view of the detection device when the shooting module and the first light source are aligned.
[0019] Figure 4 for Figure 2 A side view of the detection device when the shooting module and the second light source are aligned.
[0020] Figure 5 for Figure 2 Axial schematic diagram of the first light source in the detection device shown.
[0021] Figure 6 for Figure 2 A side view of the detection device when the camera module is aligned with the first light source and the third light source is aligned with the hollow light-transmitting area.
[0022] Figure 7 for Figure 5 A side view of the lighting component of the first light source after adjusting the lighting angle.
[0023] Figure 8 for Figure 2 Axial schematic diagram of the bracket in the detection device shown.
[0024] Figure 9 for Figure 8 Side view of the bracket shown.
[0025] Figure 10 for Figure 1 Side view of the detection device shown.
[0026] Figure 11 for Figure 1 A front view of the bracket and the first drive unit in the detection device is shown.
[0027] Figure 12 for Figure 1 A front view of the bracket, the first drive unit and the second drive unit in the detection device is shown.
[0028] Figure 13 for Figure 2 The shown diagram is a schematic diagram of the axial side of the bracket and each driving unit in the detection device.
[0029] Figure 14 for Figure 2 Axial schematic diagram of the connecting plate and purge element in the detection device shown.
[0030] Figure 15 This is an axial schematic diagram of a defect detection device provided in one embodiment of the present application.
[0031] Figure 16 for Figure 15 Axial schematic diagram of the transfer device in the defect detection equipment shown.
[0032] Figure 17 for Figure 16 A schematic axial view of the transfer member in the transfer device shown.
[0033] 1. Defect detection device; 10. Detection device; 11. Camera module; 100. Bracket; 110. Connecting plate; 120. Support member; 121. First support member; 121a. Second slide rail; 122. Second support member; 123. Third support member; 123a. Third slide rail; 124. Fourth support member; 124a. Vertical plate; 125. Fifth support member; 130. Loading plate; 140. Gantry; 141. First slide rail; 142. Receiving groove; 150. First support plate; 160. Second support plate; 170. Mounting frame; 200. Light source assembly; 210. First light source; 211. Hollow light-transmitting area; 212. Illuminating component; 220. Second light source; 230. Third light source; 300. Camera module; 410. First drive unit Element; 411, first driver; 412, first screw rod; 413, first connecting seat; 420, second driver unit; 421, second driver; 422, second screw rod; 423, second connecting seat; 430, third driver unit; 431, third driver; 432, third screw rod; 433, third connecting seat; 434, transmission belt; 440, fourth driver unit; 441, cylinder; 442, slider; 500, purge member; 510, purge hole; 20, transfer device; 21, drive platform; 22, transfer member; 22a, frame; 22b, connecting beam; 22c, fixture; 30, base; O, reference axis; O1, first axis; O2, second axis; L1, optical axis; S1, first direction; S2, second direction; S3, third direction. DETAILED DESCRIPTION
[0034] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.
[0035] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0036] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0037] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.
[0038] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.
[0040] See also Figures 1 to 4 , the detection device 10 provided in one embodiment of the present application is used to detect defects in a workpiece, and the above-mentioned defects may include but are not limited to scratches, grooves, uneven surfaces or dirt, etc. The detection device 10 includes a bracket 100, a light source assembly 200 and a shooting module 300. The shooting module 300 is used to capture an image of the workpiece, and the light source assembly 200 provides lighting for the shooting module 300 to improve the accuracy of the graphics acquired by the shooting module 300. The light source assembly 200 includes a first light source 210 and a second light source 220, and the first light source 210 and the second light source 220 are staggered and arranged on the bracket 100. The shooting module 300 is movably provided on the bracket 100 to move to a position corresponding to the first light source 210 and a position corresponding to the second light source 220. It can be understood that, if Figure 3 As shown, when the shooting module 300 is aligned with the first light source 210, the first light source 210 is used to provide lighting for the shooting of the shooting module 300. Figure 4 As shown, when the shooting module 300 is aligned with the second light source 220 , the second light source 220 is used to provide lighting for shooting of the shooting module 300 .
[0041] In the above-mentioned detection device 10, the first light source 210 and the second light source 220 respectively provide lighting for the shooting module 300, so that the shooting module 300 can obtain different shooting effects, so as to fully detect possible defects in the workpiece. In addition, the shooting module 300 can move to a position aligned with the first light source 210 and the shooting module 300 can move to a position aligned with the second light source 220, so there is no need to set two shooting modules 300 corresponding to different light sources, which simplifies the structure of the detection device 10 and reduces the cost of the detection device 10. It should be understood that the first light source 210 and the second light source 220 can be configured as different types of light sources. It should be noted that the type of light source can be distinguished based on the shooting effect obtained by the shooting module 300 when the light source provides lighting. In short, when different types of light sources are used to provide lighting for the shooting module 300, the shooting module 300 can obtain different shooting effects.
[0042] Furthermore, the first light source 210 and the second light source 220 can be one of the light sources selected from the group consisting of a coaxial light source, a bar light source, a stripe light source, a dome light source, a backlight light source, a point light source, a low-angle light source, a surface light source, a line scan light source, a structured light source, and an AOI special light source. For example, the first light source 210 can be configured as a combined bar light source, which can be used to illuminate local minor defects (such as scratches and bumps) by illuminating the combined bar light sources. The second light source 220 can be configured as a coaxial light source, which has the characteristics of uniform illumination and high contrast, making it easier to clearly display dirt, damage, bubbles, and product contours on the product surface. Of course, the first light source 210 and the second light source 220 can also be configured as other different types of light sources as needed.
[0043] The light source assembly 200 is not limited to having only two light sources. For example, please continue to refer to Figure 3 and Figure 4 In one embodiment, the light source assembly 200 further includes a third light source 230. The first light source 210, the second light source 220, and the third light source 230 each provide illumination for the camera module 300, thereby enriching the camera module 300's imaging effects and facilitating the full detection of potential defects in the workpiece. Furthermore, the third light source 230 can be a coaxial light source, a stripe light source, a dome light source, a backlight light source, a point light source, a low-angle light source, a surface light source, a line scan light source, a structured light source, or an AOI special light source. For example, the third light source 230 can be configured as a stripe light source. Stripe light sources can provide high-contrast stripe patterns, clearly visible small details on the workpiece surface, facilitating the measurement and identification of surface defects or shape changes. Stripe light sources can be used for structured light illumination, projecting a specific stripe pattern. By analyzing the deformation or offset of the stripes on the workpiece surface, the object's three-dimensional shape and contour information can be obtained, facilitating 3D image quality and inspection. In one embodiment, the first light source 210, the second light source 220, and the third light source 230 can be configured as light sources of different types.
[0044] The first light source 210 and the second light source 220 are arranged sequentially in a first direction S1. The camera module 300 is movably mounted on the bracket 100 along the first direction S1, allowing the camera module 300 to move to a position aligned with the first light source 210 and to a position aligned with the second light source 220, respectively. The first light source 210 has a hollow, light-transmitting region 211. The third light source 230 is movably mounted on the bracket 100 along the first direction S1, allowing it to move to positions aligned with and offset from the hollow, light-transmitting region 211. In this embodiment, the third light source 230 and the camera module 300 can have substantially parallel motion paths, facilitating movement of the third light source 230 to a position aligned with the camera module 300. Furthermore, the first light source 210 has a hollow, light-transmitting region 211. Since the hollow, light-transmitting region 211 is substantially hollow, when the first light source 210 is turned off, it does not affect the camera module 300's photography. Thus, the third light source 230 is allowed to provide illumination at a position aligned with the first light source 210 , thereby reducing the volume of the detection device 10 .
[0045] It should be noted that most commonly used illumination light sources (such as the aforementioned coaxial light, combined bar light source, and stripe light source) allow the imaging light from the camera module 300 to pass through for image capture. However, if the imaging light from the camera module 300 passes through two of these light sources simultaneously, the imaging effect is limited. Therefore, to avoid longitudinal overlap between the two light sources, the light sources are typically staggered, resulting in a bulky structure for the detection device 10. In the present application, however, because the third light source 230 can move along the first direction S1, it can avoid the hollow light-transmitting region 211, that is, avoid the first light source 210 that is currently providing illumination, thereby reducing the negative effect of the third light source 230 blocking the illumination provided by the first light source 210. Furthermore, some light sources (such as the first light source 210) allow the imaging light from the camera module 300 to pass through unobstructed when in use (i.e., have the aforementioned hollow light-transmitting region 211). Therefore, this type of light source can be placed relatively close to the camera module 300, in which case it will have little negative impact on the overlapping light source. That is to say, when the third light source 230 is aligned with the hollow light-transmitting area 211 and the first light source 210 is turned off, the first light source 210 will basically not affect the lighting of the third light source 230. When the first light source 210 provides lighting, the third light source 230 can be moved away to reduce the impact on the lighting of the first light source 210. This arrangement allows the longitudinally arranged first light source 210 and the third light source 230 to provide lighting independently without affecting each other. It should be further explained that the above-mentioned light sources that allow the shooting light of the shooting module 300 to pass through unimpeded usually have similar lighting effects. Therefore, the third light source 230 usually does not adopt this type of light source. Therefore, if the third light source 230 is fixed below the first light source 210 in the reference direction, the third light source 230 will affect the lighting effect of the first light source 210. Of course, this embodiment does not strictly limit the third light source 230 to not having a hollow light-transmitting area, and can be adjusted according to actual needs.
[0046] For example, see Figure 5 and Figure 6 In one embodiment, the first light source 210 includes a plurality of illumination components 212, which are evenly spaced about the reference axis O and together form the aforementioned hollow, light-transmitting region 211. When the camera module 300 is aligned with the first light source 210, the optical axis L1 of the camera module 300 coincides with the reference axis O. The aforementioned alignment of the third light source 230 with the first light source 210 means that the projection of the third light source 230 along the reference axis O at least partially overlaps with the hollow, light-transmitting region 211.
[0047] To facilitate understanding of the lighting provided by the light source assembly 200, the following describes how each light source included in the light source assembly 200 is used to provide lighting.
[0048] See also Figure 3 When the first light source 210 is used to provide illumination, the camera module 300 can be moved to a position aligned with the first light source 210. At this time, the third light source 230 can be moved to a position aligned with the second light source 220 to stagger with the first light source 210 to avoid reflection and refraction of the illumination light and the camera light.
[0049] See also Figure 4 When the second light source 220 is used to provide illumination, the camera module 300 can be moved to a position aligned with the second light source 220. Similarly, the third light source 230 can be moved to a position aligned with the first light source 210 to stagger with the second light source 220 to avoid reflection and refraction of illumination light and camera light.
[0050] See also Figure 6 When the third light source 230 is used to provide illumination, the camera module 300 can be moved to a position aligned with the first light source 210. At this point, the projection of the third light source 230 along the reference axis O at least partially overlaps with the hollow, light-transmitting area 211. The first light source 210 is in an off state, and the hollow, light-transmitting area 211 allows the imaging light to pass through unimpeded. Therefore, the third light source 230 can provide sufficient and effective illumination.
[0051] It should be noted that the above briefly describes the positions of the components when the first light source 210, the second light source 220 and the third light source 230 provide lighting, but the embodiments of the present application do not limit the timing of each light source providing lighting and can be flexibly set according to actual needs.
[0052] In one embodiment, the lighting component 212 may be a bar light source, that is, the first light source 210 is a combined bar light source as described above, and a plurality of bar light sources are combined for lighting. Figure 7 The lighting components 212 are rotatably mounted on the bracket 100 to adjust the light output angle. For example, the lighting beams provided by the lighting components 212 can be adjusted to intersect at the same position on the reference axis O to form a bright area and improve the lighting effect. Figure 7 The reference number L2 is shown in FIG. Of course, each lighting component 212 can be adjusted to have different light emission angles as needed, and this is not limited here. It should be understood that the figures of the specification illustrate four lighting components 212, but the number of lighting components 212 is not limited to this. The number of lighting components 212 can be set to 2, 3, 4, 5, 6, 7, 8, 10, 12, etc. as needed.
[0053] Please refer again Figure 2In one embodiment, the optical axis L1 of the camera module 300 extends along a second direction S2 that intersects the first direction S1. The first light source 210, the second light source 220, and the third light source 230 are disposed at different positions along the second direction S2 to fully utilize space and make the detection device 10 more compact.
[0054] Furthermore, the first direction S1 and the second direction S2 are perpendicular to each other.
[0055] See also Figure 2 、 Figure 8 and Figure 9 In one embodiment, the bracket 100 includes a connecting plate 110 and a support member 120. Multiple support members 120 are spaced apart on the connecting plate 110 along a second direction S2, and each support member 120 extends along a first direction S1. The camera module 300, the first light source 210, and the third light source 230 are each mounted on a different support member 120, while the second light source 220 is mounted on the connecting plate 110. The multiple support members 120 are positioned on the connecting plate 110 along the second direction S2, allowing the camera module 300, the first light source 210, the second light source 220, and the third light source 230 to be spaced apart in the second direction S2, thereby fully utilizing the installation space on the connecting plate 110. Each support member 120 extends along the first direction S1, facilitating movement of the camera module 300 and the third light source 230 along the first direction S1 and facilitating staggered arrangement of the first light source 210 and the second light source 220 in the first direction S1.
[0056] See also Figure 8 and Figure 9 The plurality of support members 120 can be divided into a first support member 121, a second support member 122, and a third support member 123. The first support member 121, the second support member 122, and the third support member 123 are sequentially arranged along the second direction S2. The camera module 300 is movably mounted on the first support member 121, the first light source 210 is mounted on the second support member 122, and the third light source 230 is movably mounted on the third support member 123.
[0057] Furthermore, if Figure 9One end of the first support member 121 is connected to the connecting plate 110, and the other end extends in a direction perpendicular to the connecting plate 110 in a direction away from the connecting plate 110 (i.e., direction S1). A second slide rail 121a is provided on the first support member 121, and the second slide rail 121a extends along the first direction S1 and is provided on the top surface of the first support member 121. The shooting module 300 slides in cooperation with the second slide rail 121a. One end of the third support member 123 is connected to the connecting plate 110, and the other end extends in a direction perpendicular to the connecting plate 110 in a direction away from the connecting plate 110 (i.e., direction S1). A third slide rail 123a is provided on the third support member 123, and the third slide rail 123a is provided on the bottom surface of the third support member 123 along the first direction S1.
[0058] See also Figure 8 and Figure 10 In one embodiment, the camera module 300 and the corresponding light source assembly 200 providing illumination for the camera module 300 are referred to as a camera module 11, with multiple camera modules 11 spaced apart on the bracket 100. That is, the bracket 100 is provided with multiple camera modules 300 and multiple light source assemblies 200, each of which provides illumination for each of the multiple camera modules 300. Furthermore, the bracket 100 includes a first support plate 150 and a second support plate 160, with the multiple camera modules 300 being provided on the first support plate 150. There are multiple first support members 121, and the first support plate 150 slidably engages with the multiple first support members 121. When the first support plate 150 slides relative to the first support member 121, it can drive the multiple camera modules 300 to move synchronously, allowing them to move to different workstations and simultaneously photograph and inspect multiple workpieces, resulting in high inspection efficiency. Similarly, there can be multiple second support members 122 and third support members 123 to improve support stability. The third light sources 230 are disposed on the second supporting plate 160 , and the second supporting plate 160 is slidably engaged with the third support members 123 .
[0059] Please continue reading Figure 8 In one embodiment, the bracket 100 further includes a mounting frame 170, which is disposed on the first support plate 150, and the shooting module 300 is disposed on the mounting frame 170. The mounting frame 170 can support the shooting module 300 to be placed in a preset posture, so as to facilitate shooting and detecting the workpiece facing the workpiece.
[0060] See also Figure 12In one embodiment, the bracket 100 further includes a carrier plate 130 and a gantry 140, and the light source assembly 200 and the camera module 300 are both disposed on the carrier plate 130. The gantry 140 is provided with a receiving slot 142 and a first slide rail 141. There are at least two first slide rails 141, which are disposed on either side of the receiving slot 142, and the carrier plate 130 slides in engagement with the first slide rails 141. The detection device 10 further includes a first drive unit 410, which is at least partially disposed within the receiving slot 142 and connected to the carrier plate 130 to drive the carrier plate 130 to slide. By providing the first slide rails 141 on both sides of the receiving slot 142, the smoothness of the movement of the carrier plate 130 can be improved. It will be appreciated that since the plurality of camera modules 11 are all disposed on the carrier plate 130, a higher load is placed on the carrier plate 130, thereby improving the smoothness of the movement of the carrier plate 130. Furthermore, the first driving unit 410 is disposed in the receiving groove 142 , which can reduce the structural size of the detection device 10 .
[0061] The first slide rail 141 can extend along a third direction S3. Specifically, the first drive unit 410 drives the carrier plate 130 and the camera module 300 and light source assembly 200 disposed thereon to move along the third direction S3. The third direction S3 intersects with both the first direction S1 and the second direction S2. Furthermore, the first direction S1, the second direction S2, and the third direction S3 are arranged perpendicular to each other.
[0062] like Figure 10 , multiple camera modules 11 are provided on opposite sides of the gantry 140. Furthermore, the detection device 10 may include two supporting plates 130 and two first drive units 410. The two supporting plates 130 are respectively provided on opposite sides of the gantry 140. The two first drive units 410 may both be provided in the receiving slots 142 and respectively drive the two supporting plates 130 to move along the third direction S3.
[0063] See also Figure 2 and Figure 12 In one embodiment, the connecting plate 110 is movably disposed on the supporting plate 130 along the second direction S2. Furthermore, the detection device 10 further includes a second driving unit 420, which is disposed on the supporting plate 130 and connected to the connecting plate 110 to drive the connecting plate 110 and the camera module 300 and the light source assembly 200 disposed thereon to move along the second direction S2.
[0064] See also Figure 2In one embodiment, the detection device 10 further includes a third driving unit 430 and a fourth driving unit 440, and the bracket 100 further includes a fourth support member 124 and a fifth support member 125. The third driving unit 430 is disposed on the fourth support member 124, and the fourth driving unit 440 is disposed on the fifth support member 125. The third driving unit 430 is connected to the first support plate 150 to drive the first support plate 150 and the plurality of camera modules 300 disposed on the first support plate 150 to move along the first direction S1. The fourth driving unit 440 is connected to the second support plate 160 to drive the second support plate 160 and the plurality of third light sources 230 disposed on the second support plate 160 to move along the first direction S1.
[0065] See also Figure 11 In one embodiment, the first drive unit 410 can drive the carrier plate 130 to move by using a screw nut. Furthermore, the first drive unit 410 includes a first driver 411, a first screw rod 412 and a first connecting seat 413. The first driver 411 and the first screw rod 412 are both arranged in the receiving groove 142. The first connecting seat 413 partially extends out of the receiving groove 142 and is connected to the carrier plate 130. The first driver 411 is connected to the end of the first screw rod 412 to drive the first screw rod 412 to rotate around its own axis. The first screw rod 412 passes through the first connecting seat 413 and engages with the first connecting seat 413. The first connecting seat 413 is connected to the carrier plate 130. As a result, when the first screw rod 412 rotates, it can drive the first connecting seat 413 to move axially. The first screw rod 412 can be extended along the third direction S3, and the first screw rod 412 is used to drive the first connecting seat 413 to move along the third direction S3.
[0066] See also Figure 12 Similar to the first drive unit 410, the second drive unit 420 includes a second driver 421, a second screw rod 422 and a second connecting seat 423. The second driver 421 and the second screw rod 422 are arranged on the supporting plate 130, and the second connecting seat 423 is connected to the connecting plate 110. The second driver 421 is connected to the end of the second screw rod 422 to drive the second screw rod 422 to rotate around its own axis. In addition, the second screw rod 422 passes through the second connecting seat 423 and engages with the second connecting seat 423. As a result, when the second screw rod 422 rotates, it can drive the second connecting seat 423 to move axially. The second screw rod 422 can be extended along the second direction S2, and the second screw rod 422 is used to drive the second connecting seat 423 to move along the third direction.
[0067] See also Figure 13In one embodiment, the third drive unit 430 may also adopt a screw-nut drive method. That is, the third drive unit 430 includes a third driver 431, a third screw rod 432 and a third connecting seat 433. The third connecting seat 433 is connected to the first support plate 150, and the third screw rod 432 passes through the third connecting seat 433 and engages with the third connecting seat 433. The third driver 431 is connected to the end of the third screw rod 432 to drive the third screw rod 432 to rotate around its own axis. Thus, when the third screw rod 432 rotates, it can drive the third connecting seat 433 to move axially. The third screw rod 432 can be extended along the first direction S1, and the third screw rod 432 is used to drive the third connecting seat 433 to move along the first direction S1.
[0068] Combine Figure 9 Furthermore, to simplify the dimensions of the detection device 10 in the first direction S1, the third actuator 431 and the third screw rod 432 can be connected via a transmission belt 434. This arrangement allows the third actuators 431 to be arranged side by side, rather than coaxially. Furthermore, the fourth support member 124 includes a vertical plate 124a extending along the second direction S2 to support the third actuator 431.
[0069] Please continue reading Figure 13 In one embodiment, the fourth drive unit 440 can be directly driven by a linear actuator. For example, the fourth drive unit 440 can be driven by a pneumatic cylinder or an electric push rod. Furthermore, the fourth drive unit 440 includes a cylinder 441 and a slider 442. The cylinder 441 extends along the first direction S1 and can drive the slider 442 to slide along the first direction S1. The slider 442 is connected to the second support plate 160 to drive the second support plate 160 to move along the first direction S1.
[0070] See also Figure 14 In one embodiment, the inspection device 10 further includes a purge member 500 disposed on the connecting plate 110. The purge member 500 defines a purge hole 510, which faces the workpiece to be inspected. The purge member 500 is also connected to a positive pressure generator (not shown, the same below). The positive pressure generator is configured to input positive pressure purge air into the purge member 500. The purge hole 510 directs the purge air toward the workpiece to be inspected, thereby removing dust and other debris from the workpiece surface and improving the accuracy of the imaging inspection.
[0071] See also Figure 15One embodiment of the present application also provides a defect detection device, which includes a transfer device 20 and a detection device 10. The transfer device is used to carry a workpiece and move the workpiece to the detection range of the detection device 10. Furthermore, the transfer device can also adjust its position according to the movement of the shooting module 300. For example, when the shooting module 300 moves to a position aligned with the first light source 210, the transfer device can move the workpiece to a position aligned with the first light source 210. When the shooting module 300 moves to a position aligned with the second light source 220, the transfer device can move the workpiece to a position aligned with the second light source 220.
[0072] Furthermore, the defect detection equipment 1 also includes a base 30, and the detection device 10 and the transfer device are both arranged on the base 30, wherein the detection device 10 can be mounted on the transfer device to facilitate the detection of the workpiece carried by the transfer device.
[0073] See also Figure 16 and Figure 17 In one embodiment, the transfer device 20 includes a drive platform 21 and a transfer member 22. The transfer member 22 is used to carry the workpiece. The drive platform 21 is connected to the transfer member 22. The drive platform 21 is capable of driving the transfer member 22 to move in a first direction S1. In other words, the drive platform 21 drives the transfer member 22 to move in the first direction S1, thereby transporting the workpiece in the first direction S1. With this arrangement, when the camera module 300 moves in the first direction S1 to switch the light source, the transfer device 20 can move the workpiece in response to the movement of the camera module 300, ensuring that the workpiece is always within the field of view of the camera module 300.
[0074] See also Figure 17 Furthermore, the transfer member 22 includes a frame 22a, a connecting beam 22b and a plurality of jigs 22c. The frame 22a is connected to the driving platform 21, and the driving platform 21 drives the transfer member 22 to move as a whole along the first direction S1 by driving the frame 22a to move. The connecting beam 22b is rotatably connected to the frame 22a around the first axis O1, and each jig 22c is rotatably connected to the connecting beam 22b around the second axis O2, and the first axis O1 intersects the second axis O2. With such an arrangement, the multiple workpieces fixed by the jig 22c can rotate synchronously around the first axis O1 to enrich the angular position of the workpiece within the field of view of the shooting module 300 and improve the detection effect. In addition, each jig 22c rotates around the second axis O2 and the connecting beam 22b respectively, that is, each jig 22c can also rotate around the second axis O2 to further enrich the posture of the workpiece within the field of view of the shooting module 300 and improve the detection effect.
[0075] In one embodiment, the angular position of the connecting beam 22 b and / or the fixture 22 c may be adjusted according to different positions of the shooting module 300 to perform targeted inspection on detail areas of the workpiece.
[0076] Furthermore, the first axis O1 may be perpendicular to the second axis O2, the first axis O1 may be parallel to the third direction S3, and the second axis O2 may be parallel to a plane formed by the first direction S1 and the second direction S2.
[0077] like Figure 16 In one embodiment, the transfer device 20 may include a plurality of transfer members 22, each of which is connected to the drive platform 21 and moves in the same direction (i.e., the first direction S1) under the drive of the drive platform 21. The frames 22a of each transfer member can be rotated until the jigs 22c face each other, at which point the two jigs 22c can transfer the workpiece to each other. For example, using the example of jigs 22c vacuum-absorbing a workpiece to secure it, when the two jigs 22c face each other, they can each absorb opposite sides of the workpiece. At this point, one jig 22c can release the workpiece and transfer it to the other jig 22c.
[0078] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0079] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.
Claims
1. A detection device, characterized in that: The detection device comprises: Bracket; A light source assembly, the light source assembly comprising a first light source and a second light source, wherein the first light source and the second light source are staggered and arranged on the bracket; The shooting module is movably provided on the bracket to move to a position aligned with the first light source and a position aligned with the second light source.
2. The detection device according to claim 1, characterized in that The first light source and the second light source are arranged sequentially in a first direction, and the camera module is movably provided on the bracket along the first direction; The light source assembly further includes a third light source. The first light source is provided with a hollow light-transmitting area. The third light source is movably provided on the bracket along the first direction to move to a position aligned with and offset from the hollow light-transmitting area.
3. The detection device according to claim 2, characterized in that The first light source includes a plurality of lighting components, which are evenly spaced in the circumferential direction around a reference axis and enclose a hollow light-transmitting area; when the shooting module is aligned with the first light source, the optical axis of the shooting module coincides with the reference axis.
4. The detection device according to claim 3, characterized in that The lighting component is rotatably arranged on the bracket to adjust the light output angle.
5. The detection device according to claim 2, characterized in that The optical axis of the camera module extends along a second direction, the second direction intersects the first direction, and the first light source, the second light source, and the third light source are disposed at different positions along the second direction.
6. The detection device according to claim 5, characterized in that The bracket includes a connecting plate and a supporting member, wherein a plurality of supporting members are spaced apart on the connecting plate along the second direction, and each supporting member extends along the first direction; The shooting module, the first light source and the third light source are respectively arranged on different supporting members, and the second light source is arranged on the connecting plate.
7. The detection device according to claim 2, characterized in that The first light source is configured as a combined bar light source; and / or The second light source is configured as a coaxial light source; and / or The third light source is configured as a stripe light source.
8. The detection device according to any one of claims 2 to 7, characterized in that: The first light source, the second light source, and the third light source are configured as light sources of different types.
9. The detection device according to any one of claims 1 to 7, characterized in that: The shooting module and the light source assembly corresponding to the shooting module providing lighting are recorded as a shooting module, and a plurality of the shooting modules are arranged on the bracket at intervals.
10. The detection device according to claim 1, characterized in that: The bracket includes a carrying plate and a gantry, the light source assembly and the camera module are both arranged on the carrying plate, the gantry is provided with a receiving slot, and the gantry is further provided with a first slide rail, the number of the first slide rails is at least two and they are respectively provided on both sides of the receiving slot, and the carrying plate is slidably engaged with the first slide rail; The detection device further includes a first driving unit, which is at least partially disposed in the receiving groove and connected to the supporting plate to drive the supporting plate to slide.
11. A defect detection device, characterized in that: The defect detection equipment includes a transfer device and the detection device according to any one of claims 1 to 10, wherein the transfer device is used to carry the workpiece and move the workpiece into the detection range of the detection device.