Detection device and detection system
By designing a detection device with a support frame, imaging mechanism, and rotatable light source, the problem of difficulty in distinguishing appearance defects under production workshop lighting conditions was solved, achieving efficient and accurate defect detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN LIANDE SEMICON TECH CO LTD
- Filing Date
- 2025-03-25
- Publication Date
- 2026-04-10
AI Technical Summary
In the existing technology, appearance defects such as semiconductor lead frames and LED brackets are difficult to distinguish under the lighting conditions of the production workshop, which requires production technicians to repeatedly adjust the observation angle, which is time-consuming and labor-intensive.
A detection device is designed, comprising a support frame, an imaging mechanism, and first and second light sources. The first light source is located at the bottom of the imaging mechanism to provide top illumination, and the second light source is rotatably connected to the support body to flexibly adjust the light angle. Combined with the movable components and the camera, the image contrast is improved.
It enhances the contrast between defects and normal areas, making previously indistinguishable defects appear more clearly in the image, improving detection efficiency and accuracy, and overcoming the limitations of lighting conditions in the production workshop.
Smart Images
Figure CN224109350U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of appearance defect detection, in particular to a detection device and a detection system. BACKGROUND
[0002] Currently, appearance defects of semiconductor lead frames, LED supports and the like are detected by manual visual inspection. However, due to the limitation of lighting conditions in the production workshop, some defects are difficult to distinguish, and production technicians need to repeatedly adjust the observation angle, which is time-consuming and labor-intensive.
[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present application and should not be regarded as an acknowledgment or any form of suggestion that this information forms prior art that is publicly known. SUMMARY
[0004] Therefore, it is necessary to provide a detection device and a detection system to solve the problems of appearance defects of semiconductor lead frames, LED supports and the like being detected by manual visual inspection, being difficult to distinguish due to the limitation of lighting conditions in the production workshop, and production technicians needing to repeatedly adjust the observation angle, which is time-consuming and labor-intensive.
[0005] In a first aspect, a detection device comprises:
[0006] a support frame comprising a support body;
[0007] an imaging mechanism connected to the support body;
[0008] a first light source connected to the support body, the first light source being located at the bottom of the imaging mechanism along a first direction, the first direction being the height direction of the support body; and
[0009] a second light source rotatably connected to the support body about a second direction, the second light source being located at the side of the imaging mechanism along a third direction and at the bottom of the imaging mechanism along the first direction, the third direction and the second direction intersecting with each other and not coplanar with the first direction.
[0010] In one of the embodiments, the imaging mechanism comprises a movable assembly and an imaging assembly, the movable assembly is connected to the support body, and the imaging assembly is connected to the movable end of the movable assembly, so that the imaging assembly moves along the first direction.
[0011] In one of the embodiments, the movable assembly comprises a sliding rail and a sliding block connected by sliding, the sliding rail is fixedly arranged on the support body, the sliding rail extends along the first direction, and the sliding block is connected to the imaging assembly.
[0012] In one of the embodiments, the imaging assembly comprises a camera and a lens, the camera is connected to the movable end of the movable assembly, and the lens is connected to the bottom end of the camera along the first direction.
[0013] In one of the embodiments, the support frame further comprises two side plates, the two side plates are spaced apart along the third direction and each extends away from the support frame body along the second direction, the imaging mechanism is located between the two side plates, the first light source member is connected to the side plates, and the second light source member is rotatably connected to the side plates.
[0014] In one of the embodiments, the two side plates comprise a first side plate and a second side plate, the first side plate is connected to the first light source member, and the second light source member comprises two, one of the second light source members is connected to the first side plate, and the other second light source member is connected to the second side plate.
[0015] In one of the embodiments, the support frame further comprises two adapter structures, the two adapter structures are spaced apart along the second direction, each of the adapter structures comprises an adapter plate and an extension plate, one end of the adapter plate along the third direction is connected to the side plate, the other end of the adapter plate along the third direction extends away from the side plate, the extension plate is connected to the other end of the adapter plate and extends away from the adapter plate along the first direction, the second light source member is located between the two adapter structures, and two ends of the second light source member are rotatably connected to the extension plates, respectively.
[0016] In one of the embodiments, the extension plate is provided with a guide groove, the second light source member is provided with a guide protrusion, and the guide protrusion is slidably connected to the groove wall of the guide groove.
[0017] In one of the embodiments, the adapter plate comprises a first part and a second part connected by bending, the first part is connected to the side plate, one end of the second part along the third direction is connected to the first part, and the other end of the second part along the third direction extends away from the first part, and the extension plate is connected to the second part.
[0018] In a second aspect, a detection system comprises a conveying device and a detection device, the conveying device is used to convey products to the detection device, and the detection device is the detection device as described in the first aspect.
[0019] The imaging mechanism of the detection device can capture images of the product and collect image data, thereby improving the detection efficiency. The detection device is provided with a first light source and a second light source. The first light source is located at the bottom of the imaging mechanism in the height direction and can provide light illumination for the top surface of the product. The second light source is rotatably connected to the support body in the second direction and is located on the side of the imaging mechanism in the third direction, so that the angle and direction of the light can be flexibly adjusted, the light can better irradiate the surface and defect position of the object, the contrast between the defect and the normal position is enhanced, and the originally indistinguishable defect can be more clearly presented in the image obtained by the imaging mechanism, thereby overcoming the problem that the defect is difficult to distinguish due to the limitation of the lighting conditions in the production workshop. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by the person skilled in the art without creative labor on the basis of the disclosed drawings.
[0021] Figure 1 A front view of a detection device provided by an embodiment of the present application.
[0022] Figure 2 A perspective view of a detection device provided by an embodiment of the present application.
[0023] Explanation of reference numerals: 100, detection device; 1, support body; 2, imaging mechanism; 21, movable assembly; 211, sliding rail; 22, imaging assembly; 221, camera; 222, lens; 3, first light source; 4, second light source; 5, side plate; 51, first side plate; 52, second side plate; 6, adapter structure; 61, adapter plate; 611, first part; 612, second part; 62, extension plate; 621, guide groove; 200, conveying device. DETAILED DESCRIPTION
[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.
[0025] At present, artificial visual inspection is adopted for appearance defects of semiconductor lead frame, LED support and the like, and due to the limitation of production workshop lighting conditions, some defects are difficult to distinguish, and production technicians need to repeatedly adjust the observation angle, which is time-consuming and laborious.
[0026] The embodiment of the present application provides a detection system, please refer to Figure 1 The detection system comprises a conveying device 200 (please refer to Figure 2 ) and a detection device 100. The conveying device 200 is used for conveying products to the detection device 100, and the detection device 100 can detect the appearance of the products, thereby improving the detection efficiency.
[0027] Please refer to Figure 2 In optional embodiments, the conveying device 200 can be a belt conveyor or a roller conveyor.
[0028] In the embodiment of the present application, the first direction is the Z-Z direction as shown in Figure 1 and Figure 2 The second direction is the X direction as shown in Figure 1 and Figure 2 The third direction is the Y direction as shown in Figure 1 and Figure 2 .
[0029] Please refer to Figure 1 In some embodiments, the detection device 100 comprises a support frame, an imaging mechanism 2, a first light source 3 and a second light source 4. The support frame comprises a support body 1. The imaging mechanism 2 is connected to the support body 1. The first light source 3 is connected to the support body 1, and the first light source 3 is located at the bottom of the imaging mechanism 2 along the first direction (the Z-Z direction as shown in Figure 1 The first direction is the height direction of the support body 1. The second light source 4 is rotatably connected to the support body 1 around the second direction (the X-X direction as shown in Figure 1 The second light source 4 is located at the bottom of the imaging mechanism 2 along the third direction (the Y-Y direction as shown in Figure 1The imaging mechanism 2 is located at the bottom of the imaging mechanism 2 along the first direction (YY direction shown), and the third and second directions intersect each other but are not coplanar with the first direction. The conveying device 200 conveys the product to the bottom of the imaging mechanism 2, which then captures and collects image data of the product, thereby improving detection efficiency. The detection device 100 is equipped with a first light source 3 and a second light source 4. The first light source 3 is located at the bottom of the imaging mechanism 2 along the height direction and can provide illumination to the top surface of the product. The second light source 4 is rotatably connected to the support body 1 around the second direction and is located on the side of the imaging mechanism 2 along the third direction. It can provide illumination to the side of the product and can flexibly adjust the angle and direction of the light so that the light can better illuminate the surface and defective parts of the object, enhance the contrast between defects and normal parts, and thus make defects that were originally difficult to distinguish more clearly presented in the image acquired by the imaging mechanism 2, overcoming the problem of difficult-to-distinguish defects caused by the limited lighting conditions in the production workshop.
[0030] In an optional embodiment, the first light source 3 and the second light source 4 may be LED light sources, etc.
[0031] Please see Figure 1 It should be noted that the first light source 3 mainly illuminates the top surface of the product, while the second light source 4 mainly illuminates the sides of the product.
[0032] Please see Figure 1 In some embodiments, the support frame further includes two side plates 5, which are arranged along a third direction (e.g., Figure 1 The YY direction (as shown) is set at intervals, and all are along the second direction (such as...). Figure 1 Extending in the direction away from the main body 1 (as shown in the XX direction), the imaging mechanism 2 is located between two side plates 5. The first light source 3 is connected to the side plate 5, and the second light source 4 is rotatably connected to the side plate 5. The side plates 5 can isolate the imaging mechanism 2 from the external environment, avoid interference from external light, ensure the stability of the detection environment, and help improve the accuracy of the detection results. The side plates 5 provide installation space for the first light source 3 and the second light source 4, making the structure of the detection device 100 more compact.
[0033] Please see Figure 2 In some embodiments, the imaging mechanism 2 includes a movable component 21 and an imaging component 22. The movable component 21 is connected to the support body 1, and the imaging component 22 is connected to the movable end of the movable component 21, so that the imaging component 22 moves along a first direction (e.g., Figure 2 (As shown in the ZZ direction) The imaging mechanism 2 is equipped with an additional movable component 21, which can adjust the height of the imaging component 22, making it easier to inspect the appearance of the product.
[0034] Please see Figure 2In some embodiments, the imaging assembly 22 comprises a camera 221 and a lens 222, the camera 221 is connected to the movable end of the movable assembly 21, and the lens 222 is connected to the bottom end of the camera 221 along the first direction (e.g., the Z-Z direction as shown in the drawings). The lens 222 can converge light, so that the appearance detection of the product is more accurate. Figure 2
[0035] In optional embodiments, the camera 221 can be a line-scan camera or a high-speed camera.
[0036] In optional embodiments, the movable assembly 21 can be a guide shaft and a guide sleeve, the guide shaft is connected to the support body 1 and extends along the first direction, the guide sleeve is slidingly connected to the guide shaft, and the imaging assembly 22 is connected to the guide sleeve, so that the guide sleeve drives the imaging assembly 22 to slide along the guide shaft, and then the imaging assembly 22 moves along the first direction (e.g., the Z-Z direction as shown in the drawings). Figure 2
[0037] Please refer to Figure 2 In some embodiments, the movable assembly 21 comprises a sliding rail 211 and a sliding block, the sliding rail 211 is fixedly arranged on the support body 1 and extends along the first direction (e.g., the Z-Z direction as shown in the drawings), and the sliding block is connected to the imaging assembly 22. The sliding rail 211 has a simple structure and is easy to install. Figure 2
[0038] Please refer to Figure 1 In some embodiments, the two side plates 5 comprise a first side plate 51 and a second side plate 52, the first side plate 51 is connected to the first light source 3, and the second light source 4 comprises two, one of which is connected to the first side plate 51, and the other is connected to the second side plate 52. The two second light sources 4 can effectively illuminate the side of the product, and improve the accuracy of appearance detection.
[0039] Please refer to Figure 2 In some embodiments, the support frame further comprises two adapter structures 6, the two adapter structures 6 are arranged at intervals along the second direction (e.g., the X-X direction as shown in the drawings), each adapter structure 6 comprises an adapter plate 61 and an extension plate 62, one end of the adapter plate 61 is connected to the side plate 5 along the third direction (e.g., the Y-Y direction as shown in the drawings), the other end of the adapter plate 61 extends away from the side plate 5 along the third direction, and the extension plate 62 is connected to the other end of the adapter plate 61 and extends along the first direction (e.g., the Z-Z direction as shown in the drawings). Figure 2 Figure 2 Figure 2 The second light source member 4 is arranged between the two adapter structures 6, and the two ends of the second light source member 4 are rotatably connected to the extension plate 62. The adapter plate 61 is connected to the side plate 5 at one end along the third direction, and extends away from the side plate 5 at the other end, so that the mounting position of the second light source member 4 is expanded outward from the side plate 5, and installation space is provided for the overturning of the second light source member 4. The extension plate 62 is connected to the adapter plate 61 and extends away from the adapter plate 61 along the first direction, and the second light source member 4 is rotatably connected to the extension plate 62, which provides more rotation space for the light source in two dimensions. The light source can rotate within a certain angle range around the connecting point of the extension plate 62, which facilitates the adjustment of the illumination angle to irradiate the detected object at the optimal angle.
[0040] Referring to Figure 2 In some embodiments, the adapter plate 61 includes a first portion 611 and a second portion 612 connected by bending. The first portion 611 is connected to the side plate 5, and the second portion 612 is connected to the first portion 611 at one end along the third direction (e.g., the Y-Y direction) and extends away from the first portion 611 at the other end along the third direction. The extension plate 62 is connected to the second portion 612. Figure 2 The adapter plate 61 includes a first portion 611 and a second portion 612 connected by bending, which can increase the connection area of the adapter plate 61 with the side plate 5 and improve the stability of the adapter structure 6 in connecting the second light source member 4.
[0041] Referring to Figure 2 In some embodiments, the extension plate 62 is provided with a guide groove 621, and the second light source member 4 is provided with a guide protrusion that is slidably connected to the groove wall of the guide groove 621. The provision of the guide groove 621 on the extension plate 62 can guide the overturning of the second light source member 4 and make the second light source member 4 more stable during overturning.
[0042] In optional embodiments, the second light source member 4 can be connected to the extension plate 62 through a rotating shaft and a bearing. Alternatively, the second light source member 4 can be connected to the extension plate 62 through a shaft pin. The embodiments of the present application do not limit the manner of rotatably connecting the second light source member 4 to the extension plate 62.
[0043] The specific working principle of the detection device 100 according to the embodiments of the present application will be described below: The conveying device 200 conveys the product to be detected to the bottom of the detection device 100, the first light source member 3 and the second light source member 4 provide supplementary illumination for the product to be detected, and the camera 221 and the lens 222 are used to take pictures of the product to be detected for detection.
[0044] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.
[0045] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.
[0046] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0047] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under the second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0048] It is to be noted that when an element such as a layer, film, or region is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. It will be understood that, when an element or layer is referred to as being "connected" to or "coupled" to another element or layer, it can be directly connected or coupled or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0049] Various technical features of the above-described embodiments can each be combined in any combination, as can be appreciated by one of ordinary skill in the art. For the sake of brevity, descriptions of all possible combinations are not described, however, all such combinations are contemplated and are within the scope of the present specification.
[0050] The above-described embodiments are merely illustrative for the present application and do not limit the scope of the present application. It should be understood by those skilled in the art that various modifications and improvements can be made to the embodiments without departing from the spirit of the present application. Accordingly, the scope of the present application should be determined by the appended claims rather than the above description.
Claims
1. A detection device, characterized in that, include: The support frame includes a support body; An imaging mechanism is connected to the support body; A first light source is connected to the support body and is located at the bottom of the imaging mechanism along a first direction, where the first direction is the height direction of the support body. as well as The second light source is rotatably connected to the support body about a second direction. The second light source is located on the side of the imaging mechanism along a third direction and at the bottom of the imaging mechanism along the first direction. The third direction, the second direction and the first direction intersect each other but are not coplanar.
2. The detection device of claim 1, wherein, The imaging mechanism includes a movable component and an imaging component. The movable component is connected to the support body, and the imaging component is connected to the movable end of the movable component, so that the imaging component moves along the first direction.
3. The detection device of claim 2, wherein, The movable component includes a sliding rail and a slider that are slidably connected. The sliding rail is fixed to the support body and extends along the first direction. The slider is connected to the imaging component.
4. The detection device of claim 2, wherein, The imaging component includes a camera and a lens. The camera is connected to the movable end of the movable component, and the lens is connected to the bottom end of the camera along the first direction.
5. The detection device of claim 1, wherein, The support frame also includes two side plates, which are spaced apart along the third direction and both extend in the second direction away from the main body of the support. The imaging mechanism is located between the two side plates, the first light source is connected to the side plate, and the second light source is rotatably connected to the side plate.
6. The detection device of claim 5, wherein, The two side panels include a first side panel and a second side panel. The first side panel is connected to the first light source element. The second light source element includes two elements, one of which is connected to the first side panel and the other of which is connected to the second side panel.
7. The detection device of claim 5, wherein, The support frame further includes two transition structures, which are spaced apart along the second direction. Each transition structure includes a transition plate and an extension plate. One end of the transition plate is connected to the side plate along the third direction, and the other end extends away from the side plate along the third direction. The extension plate is connected to the other end of the transition plate and extends away from the transition plate along the first direction. The second light source is disposed between the two transition structures, and both ends of the second light source are rotatably connected to the extension plate.
8. The detection device of claim 7, wherein, The extension plate is provided with a guide groove, and the second light source component is provided with a guide protrusion, which is slidably connected to the groove wall of the guide groove.
9. The detection device of claim 7, wherein, The adapter plate includes a first part and a second part that are bent and connected. The first part is connected to the side plate. One end of the second part is connected to the first part along the third direction, and the other end extends along the third direction in a direction away from the first part. The extension plate is connected to the second part.
10. A detection system characterized by, The detection system includes a conveying device and a detection device, wherein the conveying device is used to convey products to the detection device, and the detection device is the detection device as described in any one of claims 1 to 9.