Visual inspection device

Abstract

The utility model relates to the technical field of machine vision detection, and discloses a vision detection device which comprises a shadowless light source and an annular light source which are sequentially arranged from top to bottom, the shadowless light source comprises an annular supporting plate and a shadowless light emitting lamp panel, and the annular supporting plate forms a top plate of the annular light source. An annular groove used for installing the shadowless light-emitting lamp panel is formed in the top of the annular supporting plate, and an annular protrusion used for limiting the annular light-emitting lamp panel of the annular light source is arranged at the bottom of the annular supporting plate. According to the visual inspection device, through the ingenious structural design, the height of the structure of the light source part is reduced, and the total size of the visual inspection device is reduced.

Description

Technical Field

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

[0002] Current visual inspection devices generally include an inspection camera and a light source. Light sources can be classified as point light sources, line light sources, ring light sources, planar light sources, shadowless light sources, etc. The quality of the light source will directly affect the imaging effect of the inspection camera, and thus affect the inspection results.

[0003] To further improve the lighting effect, combined light sources that combine two different light sources have emerged to provide better and wider illumination for workpieces. Different light sources are usually fixedly connected by a connecting frame. However, the setting of the connecting frame increases the height of the combined light source, which is not conducive to reducing the overall height of the combined light source.

[0004] Therefore, it is necessary to design a visual inspection device that can help reduce the height of the light source structure and reduce the overall volume of the visual inspection device.

[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 visual inspection device that can help reduce the height of the light source structure and reduce the overall volume of the visual inspection device.

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

[0008] A visual inspection device includes a shadowless light source and a ring light source arranged sequentially from top to bottom;

[0009] The shadowless light source includes an annular support plate and a shadowless light-emitting plate, and the annular support plate constitutes the top plate of the annular light source;

[0010] The top of the annular support plate is provided with an annular groove for mounting the shadowless light-emitting lamp plate, and the bottom of the annular support plate is provided with an annular protrusion for limiting the annular light source's annular light-emitting lamp plate.

[0011] Optionally, the annular light source further includes a cylindrical portion fixedly connected to the annular support plate;

[0012] A first limiting groove is formed on the side of the annular protrusion, and a second limiting groove is formed on the cylindrical part. The top of the annular light-emitting plate extends into the first limiting groove, and the bottom of the annular light-emitting plate extends into the second limiting groove.

[0013] Optionally, the annular light source further includes a diffuser plate, one end of which is fixedly connected to the bottom of the cylindrical portion, and the other end is bent and extends toward the shadowless light source;

[0014] The highest point of the diffuser plate is not lower than the bottom surface of the annular protrusion.

[0015] Optionally, the first limiting groove includes a first limiting surface and a second limiting surface that are perpendicular to each other, wherein the first limiting surface is a cylindrical surface;

[0016] The second limiting groove includes a third limiting surface and a fourth limiting surface that are perpendicular to each other, wherein the third limiting surface is a cylindrical surface;

[0017] The openings of the first limiting groove and the second limiting groove are opposite each other, the first limiting surface is parallel to the third limiting surface, and the second limiting surface is parallel to the fourth limiting surface.

[0018] Optionally, it also includes a coaxial light source;

[0019] The coaxial light source is installed on one side of the top of the shadowless light source, and the shadowless light source is fixedly connected to the coaxial light source.

[0020] Optionally, an annular support frame is mounted on the annular support plate, and the annular support frame has a support plate for supporting the coaxial light source;

[0021] The bottom of the annular support frame is fixedly connected to the annular support plate.

[0022] Optionally, it also includes a detection camera mounted on the top side of the coaxial light source.

[0023] Optionally, the shadowless light source has an arc-shaped diffuser plate, and the top surface of the arc-shaped diffuser plate is provided with a diffuse reflection layer;

[0024] The light emitted from the shadowless light-emitting plate can enter the arc-shaped diffuser plate and be reflected by the diffuse reflection layer onto the workpiece on the bottom side;

[0025] An annular space is formed between the arc-shaped diffuser plate and the annular groove, and the shadowless light-emitting plate is installed in the annular space.

[0026] Optionally, the shadowless light-emitting board includes a ring circuit board and an array of LEDs mounted on the ring circuit board.

[0027] Optionally, the annular light-emitting plate is inclined.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The visual inspection device provided by this utility model includes at least a shadowless light source and a ring light source in its light source structure. The shadowless light source has a ring support plate, which forms the top plate of the ring light source. The top of the ring support plate forms a ring groove to support the shadowless light-emitting plate, and the bottom of the ring support plate forms a ring protrusion for positioning the ring light-emitting plate, thereby further reducing the distance between the shadowless light-emitting plate and the ring light-emitting plate. In addition, the shadowless light source and the ring light source are connected through the ring support plate, eliminating the need for additional connecting frames, reducing the height of the light source structure, and thus helping to reduce the overall volume of the visual inspection device.

[0030] 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

[0031] 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.

[0032] Figure 1 This is an exploded view of the visual inspection device provided in this embodiment of the present invention;

[0033] Figure 2 This is a front view schematic diagram of the visual inspection device provided in this embodiment of the utility model;

[0034] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the visual inspection device along line AA.

[0035] Reference numerals in the attached drawings: 1. Shadowless light source; 11. Annular support plate; 1101. First limiting groove; 111. Annular groove; 112. Annular protrusion; 12. Shadowless light-emitting plate; 13. Arc-shaped diffuser plate; 2. Annular light source; 21. Annular light-emitting plate; 22. Cylindrical part; 2201. Second limiting groove; 23. Diffuser plate; 3. Coaxial light source; 4. Annular support frame; 5. Detection camera. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Example 1

[0046] In view of the aforementioned deficiencies in existing visual inspection 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 device that can overcome the shortcomings of the existing technology and make the visual inspection device more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value has finally been created.

[0047] Please refer to Figures 1 to 3 This utility model provides a visual inspection device, which includes a shadowless light source 1 and a ring light source 2 arranged sequentially from top to bottom. Both the shadowless light source 1 and the ring light source 2 emit light downwards, thereby forming a combined lighting environment to better meet the inspection needs of different types of workpieces.

[0048] The shadowless light source 1 includes an annular support plate 11 and a shadowless light-emitting plate 12, and the annular support plate 11 constitutes the top plate of the annular light source 2; the top of the annular support plate 11 is provided with an annular groove 111 for mounting the shadowless light-emitting plate 12 of the shadowless light source 1, and the bottom of the annular support plate 11 is provided with an annular protrusion 112 for limiting the annular light-emitting plate 21 of the annular light source 2.

[0049] In this embodiment, a connecting frame is not required. Instead, an annular support plate 11 connects the shadowless light source 1 and the annular light source 2. This not only reduces the height of the connecting frame but also further reduces the height of the top plate of the annular light source 2, resulting in a lower overall height of the light source structure in the visual inspection device. It should also be noted that the shadowless light-emitting plate 12 and the annular light-emitting plate 21 are installed on opposite sides of the annular support plate 11, bringing them closer together, which also helps to reduce the overall height of the light source structure. Furthermore, the annular support plate 11 simultaneously positions the shadowless light-emitting plate 12 and the annular light-emitting plate 21, reducing the possibility of inaccurate relative installation positions.

[0050] It should also be noted that the light emitted from the shadowless light source passes through the light-transmitting hole in the middle of the annular support plate 11 and shines downwards.

[0051] Preferably, the ring light source 2 is mainly used for character detection of semiconductor components such as chips.

[0052] Optionally, the annular light source 2 further includes a cylindrical portion 22 fixedly connected to the annular support plate 11; a first limiting groove 1101 is formed on the side of the annular protrusion 112, and a second limiting groove 2201 is formed on the cylindrical portion 22. The top of the annular light-emitting plate 21 extends into the first limiting groove 1101, and the bottom of the annular light-emitting plate 21 extends into the second limiting groove 2201. The first limiting groove 1101 positions the top of the annular light-emitting plate 21, and the second limiting groove 2201 positions the bottom of the annular light-emitting plate 21, thereby completely positioning the annular light-emitting plate 21. Generally, the annular light-emitting plate 21 is installed at an angle and emits light downwards at an angle.

[0053] Optionally, the ring light source 2 also includes a diffuser plate 23, one end of which is fixedly connected to the bottom of the cylindrical portion 22, and the other end is bent and extends toward the shadowless light source 1; the highest point of the diffuser plate 23 is not lower than the bottom surface of the annular protrusion 112. The diffuser plate 23 is used to diffuse the light, improve the uniformity of the light emission, and enable the workpiece to receive uniform and good illumination.

[0054] Optionally, the first limiting groove 1101 includes a first limiting surface and a second limiting surface that are perpendicular to each other, the first limiting surface being a cylindrical surface; the second limiting groove 2201 includes a third limiting surface and a fourth limiting surface that are perpendicular to each other, the third limiting surface being a cylindrical surface; the openings of the first limiting groove 1101 and the second limiting groove 2201 are opposite each other, the first limiting surface is parallel to the third limiting surface, and the second limiting surface is parallel to the fourth limiting surface. Figure 3 As shown, generally, the top of the annular light-emitting plate 21 abuts against the first limiting surface and the second limiting surface, and the top of the annular light-emitting plate 21 abuts against the third limiting surface and the fourth limiting surface, thereby completely positioning the annular light-emitting plate 21. Figure 3 As shown, the diameter of the first limiting surface is a cylindrical surface, which is smaller than the diameter of the third limiting surface, and the center lines of the first limiting surface and the third limiting surface coincide.

[0055] Optionally, the visual inspection device further includes a coaxial light source 3; the coaxial light source 3 is installed on the top side of the shadowless light source 1, and the shadowless light source 1 is fixedly connected to the coaxial light source 3. Specifically, the light emitted from the coaxial light source passes through the shadowless light source 1 and the ring light source 2, and is directed towards the workpiece on the bottom side. In this embodiment, the visual inspection device, by adding the coaxial light source 3, further improves the diversity of light output, thereby expanding the applicability of the visual inspection device.

[0056] Optionally, an annular support frame 4 is mounted on the annular support plate 11. The annular support frame 4 has a support plate for supporting the coaxial light source 3; the bottom of the annular support frame 4 is fixedly connected to the annular support plate 11. The annular support frame 4 can improve the installation stability of the coaxial light source 3.

[0057] Optionally, the visual inspection device also includes an inspection camera 5, which is mounted on the top side of the coaxial light source 3, such as... Figure 3 As shown.

[0058] Optionally, the shadowless light source 1 has an arc-shaped diffuser plate 13, and a diffuse reflection layer is provided on the top surface of the arc-shaped diffuser plate 13; the light emitted from the shadowless light output plate 12 can enter the arc-shaped diffuser plate 13, and be reflected by the diffuse reflection layer to the workpiece on the bottom side; the arc-shaped diffuser plate 13 is a light-transmitting material, and can make the light reflect and diffuse.

[0059] An annular space is formed between the arc-shaped diffuser plate 13 and the annular groove 111. The shadowless light output plate 12 is installed in the annular space, reducing the possibility of damage to the shadowless light output plate 12.

[0060] Optionally, the shadowless light-emitting board 12 includes a ring-shaped circuit board and an array of LED beads mounted on the ring-shaped circuit board. Preferably, the LED beads are LED beads.

[0061] Optionally, such as Figure 1 and Figure 3As shown, the annular light-emitting plate 21 is set at an angle.

[0062] 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 visual inspection device, characterized in that, It includes a shadowless light source (1) and a ring light source (2) arranged from top to bottom; The shadowless light source (1) includes an annular support plate (11) and a shadowless light output plate (12), and the annular support plate (11) constitutes the top plate of the annular light source (2); The top of the annular support plate (11) is provided with an annular groove (111) for installing the shadowless light output plate (12), and the bottom of the annular support plate (11) is provided with an annular protrusion (112) for limiting the annular light output plate (21) of the annular light source (2).

2. The visual inspection device according to claim 1, characterized in that, The annular light source (2) also includes a cylindrical part (22) fixedly connected to the annular support plate (11); A first limiting groove (1101) is formed on the side of the annular protrusion (112), and a second limiting groove (2201) is formed on the cylindrical part (22). The top of the annular light-emitting plate (21) extends into the first limiting groove (1101), and the bottom of the annular light-emitting plate (21) extends into the second limiting groove (2201).

3. The visual inspection device according to claim 2, characterized in that, The ring light source (2) also includes a diffuser plate (23), one end of which is fixedly connected to the bottom of the cylindrical part (22), and the other end is bent and extends toward the shadowless light source (1); The highest point of the diffuser plate (23) is not lower than the bottom surface of the annular protrusion (112).

4. The visual inspection device according to claim 2, characterized in that, The first limiting groove (1101) includes a first limiting surface and a second limiting surface that are perpendicular to each other, and the first limiting surface is a cylindrical surface; The second limiting groove (2201) includes a third limiting surface and a fourth limiting surface that are perpendicular to each other, wherein the third limiting surface is a cylindrical surface; The first limiting groove (1101) and the second limiting groove (2201) are opposite to each other, the first limiting surface is parallel to the third limiting surface, and the second limiting surface is parallel to the fourth limiting surface.

5. The visual inspection device according to claim 1, characterized in that, It also includes a coaxial light source (3); The coaxial light source (3) is installed on the top side of the shadowless light source (1), and the shadowless light source (1) is fixedly connected to the coaxial light source (3).

6. The visual inspection device according to claim 5, characterized in that, An annular support frame (4) is installed on the annular support plate (11), and the annular support frame (4) has a support plate for supporting the coaxial light source (3); The bottom of the annular support frame (4) is fixedly connected to the annular support plate (11).

7. The visual inspection device according to claim 5, characterized in that, It also includes a detection camera (5), which is mounted on the top side of the coaxial light source (3).

8. The visual inspection device according to claim 1, characterized in that, The shadowless light source (1) has an arc-shaped diffuser plate (13), and the top surface of the arc-shaped diffuser plate (13) is provided with a diffuse reflection layer; The light emitted from the shadowless light-emitting plate (12) can enter the arc-shaped diffuser plate (13) and be reflected by the diffuse reflection layer onto the workpiece on the bottom side; An annular space is formed between the arc-shaped diffuser plate (13) and the annular groove (111), and the shadowless light-emitting plate (12) is installed in the annular space.

9. The visual inspection device according to claim 1, characterized in that, The shadowless light-emitting board (12) includes a ring circuit board and an array of LEDs mounted on the ring circuit board.

10. The visual inspection device according to claim 4, characterized in that, The annular light-emitting plate (21) is set at an angle.

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