Light source device and visual inspection device

Abstract

The utility model relates to machine vision detection technical field discloses a kind of light source device and vision detection device, comprising: annular support frame is provided with the detection hole for image detection device to detect;Adjusting support, it is installed in the side of annular support frame away from image detection device;At least three point light sources, all point light sources are installed on adjusting support around the center line of detection hole circumferentially array, the light axis of all point light sources is inclined downward and intersect with the center line of detection hole, and the light axis of all point light sources intersects on a point.The light source device and vision detection device of the utility model can provide better lighting effect, and improve detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of machine vision inspection technology, and in particular to a light source device and a vision inspection device. Background Technology

[0002] In machine vision inspection, the light emitted by the light source device illuminates the product under test, and the illumination effect directly determines the image quality of the product, thus affecting the result of the vision inspection.

[0003] Currently, there are light source devices where a point light source is mounted on a bracket and shines directly onto the workpiece under test. The light source device is positioned directly above the workpiece, and the inspection camera is tilted to take pictures of the workpiece surface. In this case, the inspection camera cannot be positioned directly above the workpiece for inspection, and the illumination of a single point light source may not be sufficient for actual inspection needs, resulting in poor inspection accuracy.

[0004] Therefore, it is necessary to design a light source device and a visual inspection device that can help improve the inspection accuracy.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a light source device and a visual inspection device, which can help improve the inspection accuracy.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A light source device, comprising:

[0009] The ring-shaped support frame is equipped with detection holes for image detection devices to perform detection.

[0010] Adjust the bracket and install it on the side of the annular support frame away from the image detection device;

[0011] At least three point light sources are arranged in a circumferential array on the adjustment bracket around the center line of the detection hole. The light emission axes of all the point light sources are inclined downward and intersect the center line of the detection hole, and the light emission axes of all the point light sources intersect at a single point.

[0012] Optionally, the adjustment bracket includes a support block and a rotating adjustment rod, and the heat dissipation part of the point light source is attached to and fixedly connected with the rotating adjustment rod.

[0013] Optionally, one end of the rotating adjustment rod is pivotally connected to one of the support blocks, and the other end is pivotally connected to another support block, and the rotating adjustment rod can rotate relative to the support blocks to adjust the light emission direction of the point light source.

[0014] Optionally, the rotating adjustment rod has heat dissipation fins formed on it;

[0015] The rotating adjustment rod is a metal structural component.

[0016] Optionally, the support block is provided with a rotating hole and an arc-shaped through groove, the arc-shaped through groove extending arc-shaped around the rotating hole;

[0017] One end of the rotating adjustment rod can be rotatably inserted into the rotating hole, and an adjustment screw that can be detachably connected to the rotating adjustment rod is installed in the arc-shaped through groove.

[0018] Optionally, the annular support frame is detachably connected to the adjusting bracket.

[0019] Optionally, the annular support frame is provided with a first positioning pin hole, and the support block of the adjusting bracket is provided with a second positioning pin hole corresponding to the first positioning pin hole.

[0020] Optionally, each of the first positioning pin holes has a connecting hole on both sides opposite to it;

[0021] The support block is provided with a connecting thread hole corresponding to the connecting hole.

[0022] Optionally, a thermally conductive coating is provided between the support block and the rotating adjustment rod, with the two opposite sides of the thermally conductive coating respectively attached to the support block and the rotating adjustment rod.

[0023] A visual inspection device includes an image inspection device and a light source device as described in any of the preceding claims;

[0024] The image detection device is installed on the top side of the light source device.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The light source device and visual inspection device provided by this utility model are equipped with a ring support frame, on which an adjustment bracket is installed to support the point light source. Multiple point light sources are arranged in a circular array about the center line of the inspection hole, and the light emission axes of the point light sources are all inclined downward and intersect the center line of the inspection hole. The light emission axes of all point light sources intersect at one point, which can effectively focus the light on a specific position of the workpiece to be tested, improve the illumination, and enable the image inspection device to be positioned directly above the workpiece to be tested for photographic inspection, which is beneficial to improving the inspection accuracy.

[0027] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a front view schematic diagram of the light source device provided in an embodiment of this utility model;

[0030] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the light source device along line AA;

[0031] Figure 3 This is a three-dimensional structural diagram of the light source device provided in an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the rotating adjustment rod provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of another rotating adjustment rod provided in an embodiment of this utility model.

[0034] Reference numerals: 1. Annular support frame; 101. Image detection device; 11. Detection hole; 2. Adjustment bracket; 21. Support block; 2101. Rotation hole; 2102. Arc-shaped through groove; 201. Heat dissipation fin part; 22. Rotation adjustment rod; 3. Point light source; 1001. First positioning pin hole; 1002. Second positioning pin hole; 1003. Connecting hole; 1004. Connecting threaded hole. Detailed Implementation

[0035] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0036] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0037] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0038] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0039] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0040] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0041] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0042] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0043] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0044] Example 1

[0045] In view of the aforementioned deficiencies in existing light source devices, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a solution that overcomes the shortcomings of existing technologies and makes the light source device more practical. Through continuous research and design, and after repeated prototype production and improvements, this utility model, which possesses genuine practical value, has finally been created.

[0046] Please refer to Figures 1 to 5 This utility model provides a light source device, including: an annular support frame 1 with a detection hole 11 for detection by an image detection device 101; an adjustment bracket 2 installed on the side of the annular support frame 1 away from the image detection device 101; at least three point light sources 3, all of which are arranged in a circumferential array around the center line of the detection hole 11 on the adjustment bracket 2, and the light emission axes of all the point light sources 3 are inclined downward and intersect the center line of the detection hole 11, and the light emission axes of all the point light sources 3 intersect at a single point.

[0047] In this embodiment, the light source device is equipped with a ring support frame 1, on which an adjustment bracket 2 is installed to support the point light sources 3. Multiple point light sources 3 are arranged in a circumferential array about the center line of the detection hole 11, and the light emission axes of the point light sources 3 are all tilted downward and intersect the center line of the detection hole 11. The light emission axes of all point light sources 3 intersect at one point, thereby effectively focusing the light on a specific position of the workpiece to be tested, improving the brightness of the light, providing better illumination, and allowing the image detection device to be positioned directly above the workpiece to be tested for photographic detection, thus improving the detection accuracy.

[0048] In this embodiment, the image detection device 101 can be installed directly above the annular support frame 1. It takes pictures of the workpiece to be tested through the detection hole 11. Multiple point light sources 3 are tilted and directed at the test position of the workpiece from various directions, so that the details at the test position can be displayed more clearly and the accuracy of detection is improved.

[0049] Optionally, the adjustment bracket 2 includes a support block 21 and a rotating adjustment rod 22, with the heat dissipation part of the point light source 3 attached to and fixedly connected to the rotating adjustment rod 22. In this embodiment, the heat dissipation part of the point light source 3 can transfer heat to the rotating adjustment rod 22, and the rotating adjustment rod 22 constitutes a heat dissipation component, thereby improving the heat dissipation effect of the point light source 3.

[0050] Optionally, one end of the rotating adjustment rod 22 is pivotally connected to a support block 21, and the other end is pivotally connected to another support block 21. The rotating adjustment rod 22 can rotate relative to the support block 21 to adjust the light emission direction of the point light source 3. In this embodiment, the light emission direction of the point light source 3 can be flexibly adjusted to change the light emission angle and adapt to the detection needs of different workpieces.

[0051] Optionally, such as Figure 5 As shown, a heat dissipation fin portion 201 is formed on the rotating adjustment rod 22; the rotating adjustment rod 22 is a metal structural component. The heat dissipation capacity of the rotating adjustment rod 22 is further improved, and in conjunction with the heat dissipation portion of the point light source 3, it can effectively dissipate the heat generated by the LED beads and prevent the point light source 3 from overheating.

[0052] Optionally, the support block 21 is provided with a rotating hole 2101 and an arc-shaped through groove 2102, the arc-shaped through groove 2102 extending arc-shaped around the rotating hole 2101; one end of the rotating adjustment rod 22 can be rotatably inserted into the rotating hole 2101, and an adjustment screw that can be detachably connected to the rotating adjustment rod 22 is installed in the arc-shaped through groove 2102.

[0053] In this embodiment, the rotating adjustment rod 22 rotates through the rotating hole 2101, and the adjusting screw can fix the rotating adjustment rod 22 on the support block 21, thereby maintaining the light emission angle of the point light source 3 on the rotating adjustment rod 22.

[0054] Optionally, the annular support frame 1 and the adjusting bracket 2 are detachably connected. In this embodiment, the adjusting bracket 2 can be assembled first, and then the adjusting bracket 2 can be installed on the annular support frame 1.

[0055] Optionally, the annular support frame 1 is provided with a first positioning pin hole 1001, and the support block 21 of the adjusting bracket 2 is provided with a second positioning pin hole 1002 corresponding to the first positioning pin hole 1001. The positioning pin passes through the first positioning pin hole 1001 and is inserted into the corresponding second positioning pin hole 1002, thereby accurately positioning the support block 21, ensuring that the support block 21 is installed in the proper position, and reducing the difficulty of installation.

[0056] Optionally, each of the first positioning pin holes 1001 has a connecting hole 1003 on both sides opposite to it; the support block 21 has a connecting threaded hole 1004 corresponding to the connecting hole 1003. The threaded fastener can pass through the connecting hole 1003 and be threadedly connected to the connecting threaded hole 1004, thereby fixing the support block 21 to the bottom side of the annular support frame 1.

[0057] Optionally, a thermally conductive coating is provided between the support block 21 and the rotating adjustment rod 22, with the opposite sides of the thermally conductive coating respectively attached to the support block 21 and the rotating adjustment rod 22. Specifically, the thermally conductive coating allows more heat to be transferred to the rotating adjustment rod 22, improving the heat dissipation efficiency of the rotating adjustment rod 22.

[0058] Example 2

[0059] This embodiment discloses a visual inspection device, including an image inspection device 101 and a light source device as described in Embodiment 1; the image inspection device 101 is installed on the top side of the light source device.

[0060] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A light source device, characterized in that, include: The ring support frame (1) is provided with a detection hole (11) for the image detection device (101) to perform detection; Adjust the bracket (2) and install it on the side of the annular support frame (1) away from the image detection device (101); At least three point light sources (3) are arranged in a circumferential array around the center line of the detection hole (11) on the adjustment bracket (2). The light emission axes of all the point light sources (3) are inclined downward and intersect the center line of the detection hole (11), and the light emission axes of all the point light sources (3) intersect at a single point.

2. The light source device according to claim 1, characterized in that, The adjustment bracket (2) includes a support block (21) and a rotating adjustment rod (22). The heat dissipation part of the point light source (3) is attached to and fixedly connected with the rotating adjustment rod (22).

3. The light source device according to claim 2, characterized in that, One end of the rotating adjustment rod (22) is pivotally connected to one of the support blocks (21), and the other end is pivotally connected to another support block (21). The rotating adjustment rod (22) can rotate relative to the support block (21) to adjust the light emission direction of the point light source (3).

4. The light source device according to claim 2, characterized in that, The rotating adjustment rod (22) has a heat dissipation fin portion (201) formed on it; The rotating adjustment rod (22) is a metal structural component.

5. The light source device according to claim 2, characterized in that, The support block (21) is provided with a rotating hole (2101) and an arc-shaped through groove (2102), and the arc-shaped through groove (2102) extends arc-shaped around the rotating hole (2101); One end of the rotating adjustment rod (22) can be rotatably inserted into the rotating hole (2101), and an adjustment screw that can be detachably connected to the rotating adjustment rod (22) is installed in the arc-shaped through groove (2102).

6. The light source device according to claim 1, characterized in that, The annular support frame (1) and the adjusting bracket (2) are detachably connected.

7. The light source device according to claim 6, characterized in that, The annular support frame (1) is provided with a first positioning pin hole (1001), and the support block (21) of the adjusting bracket (2) is provided with a second positioning pin hole (1002) corresponding to the first positioning pin hole (1001).

8. The light source device according to claim 7, characterized in that, Each of the first positioning pin holes (1001) has a connecting hole (1003) on both sides opposite to it; The support block (21) is provided with a connecting thread hole (1004) corresponding to the connecting hole (1003).

9. The light source device according to claim 2, characterized in that, A thermally conductive coating is provided between the support block (21) and the rotating adjustment rod (22), and the two opposite sides of the thermally conductive coating are respectively attached to the support block (21) and the rotating adjustment rod (22).

10. A visual inspection device, characterized in that, It includes an image detection device (101) and a light source device as described in any one of claims 1 to 9; The image detection device (101) is installed on the top side of the light source device.

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