A kind of sphere integral detection light source and visual detection device

Abstract

The utility model relates to the field of light source structure discloses a kind of steradiancy detection light source and visual inspection device, comprising: stage, it is provided with first bearing part and second bearing part, and first bearing part is provided with light hole on;Integral hemispherical shell is fixedly connected with first bearing part, and first bearing part is provided with annular mounting groove around light hole, annular light-emitting lamp plate for emitting light to integral hemispherical shell inner wall spherical surface is installed in annular mounting groove;Annular light-emitting lamp plate is divided into several light-emitting areas, the light-emitting color of each light-emitting area is identical, and each light-emitting area can be individually controlled start-stop;Control module is installed on second bearing part, and it is electrically connected with annular light-emitting lamp plate.The utility model's steradiancy detection light source and visual inspection device can be beneficial to the tiny flaw defect of detection workpiece.

Description

Technical Field

[0001] This utility model relates to the field of light source structure, and in particular to a spherical integral detection light source and a visual inspection device. Background Technology

[0002] With the development of technology, various industrial products are becoming increasingly diverse, and people's requirements for product quality are also getting higher and higher. In order to ensure product quality, multiple tests are required on the manufactured products. Therefore, machine vision inspection is being used more and more widely in various fields. A spherical integrating light source is a commonly used inspection light source. In use, the spherical integrating light source is positioned above the object being photographed, and the light is projected onto the workpiece surface through hemispherical reflection. However, most existing spherical integrating light sources are monolithic, unable to illuminate the workpiece surface from various angles, making it difficult to detect minute defects such as surface scratches, shallow scratches, pits, foreign objects, unevenness, dullness, and dirt.

[0003] Therefore, it is necessary to design a spherical integral detection light source and a visual inspection device that can help detect minute defects in workpieces.

[0004] 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

[0005] This invention provides a spherical integrating light source and a visual inspection device, which can help detect minute defects in workpieces.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A spherical integral detection light source, comprising: The stage is provided with a first support part and a second support part, and the first support part is provided with a light-emitting hole; An integrating hemispherical shell is fixedly connected to a first supporting part, and an annular mounting groove is provided around the light-emitting hole on the first supporting part. An annular light-emitting lamp plate for emitting light to the spherical surface of the inner wall of the integrating hemispherical shell is installed in the annular mounting groove. The ring-shaped light-emitting panel is divided into at least three light-emitting zones, each emitting light of the same color, and each light-emitting zone can be controlled to start and stop independently. The control module is installed on the second support unit and is electrically connected to the ring-shaped light output board.

[0007] Optionally, the sphere integral detection light source also includes a support frame for supporting the detection camera; An annular protrusion is formed at the bottom of the integral hemispherical shell, and the support frame is fixedly connected to the first bearing part and presses down on the annular protrusion.

[0008] Optionally, the spherical integration detection light source also includes a pressure ring; The pressure ring presses against the annular protrusion, and the support frame presses and fixes the pressure ring.

[0009] Optionally, the support frame includes several support arms and a support ring, the support ring being used to support the detection camera; The support ring is located on the top side of the integral hemispherical shell, and the two ends of the support arm are detachably connected to the first bearing part and the support ring, respectively.

[0010] Optionally, the inner hole of the integral hemispherical shell corresponding to the support ring is provided with a detection hole; The detection aperture and the light output aperture are coaxial.

[0011] Optionally, each light-emitting zone is equipped with several white LED beads; All white LED beads are arranged in a circular array around the aperture.

[0012] Optionally, a protective cover is installed on each second support portion, and the control module is located in the mounting cavity formed by the protective cover and the second support portion; The protective cover has heat dissipation holes on both sides.

[0013] Optionally, the annular mounting groove is connected to the annular mounting groove via a connecting channel; The ring-shaped light output panel is connected to a plug-in connector, which is located in the connection channel.

[0014] Optionally, the inner wall surface of the integral hemispherical shell is a diffuse surface.

[0015] A visual inspection device includes a spherical integral inspection light source as described in any of the preceding claims.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The sphere integrating detection light source provided by this utility model can control different light-emitting zones to be activated sequentially during the actual detection process, so that light can illuminate the surface of the workpiece from different directions. The detection camera can take pictures separately when the light is illuminating from different directions, which is conducive to accurately detecting minute defects and improving the detection accuracy of minute defects.

[0017] 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

[0018] 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.

[0019] Figure 1 This is a top view schematic diagram of the spherical integration detection light source provided in this embodiment of the utility model; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the spherical integral detection light source along line AA; Figure 3 This is a three-dimensional structural schematic diagram of the spherical integral detection light source provided in this embodiment of the utility model; Figure 4 This is a three-dimensional structural diagram of the spherical integral detection light source provided in an embodiment of this utility model from another viewing angle.

[0020] Reference numerals: 1. Platform; 11. First support part; 12. Second support part; 13. Light emission hole; 14. Annular mounting groove; 2. Integrating hemispherical shell; 21. Annular protrusion; 201. Detection hole; 3. Annular light emission plate; 4. Control module; 5. Support frame; 51. Support arm; 52. Support ring; 6. Pressure ring; 7. Protective cover; 71. Heat dissipation hole group; 8. Plug-in connector. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] As understood 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.

[0028] 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.

[0029] 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.

[0030] Example 1 In view of the shortcomings of existing sphere integrating light sources, the applicant, based on years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a sphere integrating detection light source that can solve the shortcomings of the existing technology and make it more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value has finally been created.

[0031] Please refer to Figures 1 to 4 This utility model embodiment provides a spherical integrating detection light source, including: a stage 1, which is provided with a first support part 11 and a second support part 12, and the first support part 11 is provided with a light-emitting hole 13; an integrating hemispherical shell 2, which is fixedly connected to the first support part 11, and the first support part 11 is provided with an annular mounting groove 14 around the light-emitting hole 13, and an annular light-emitting lamp plate 3 for emitting light to the inner wall spherical surface of the integrating hemispherical shell 2 is installed in the annular mounting groove 14; the annular light-emitting lamp plate 3 is divided into several light-emitting areas, generally at least three light-emitting areas, each light-emitting area emits the same light color, and each light-emitting area can be controlled to start and stop independently; in this embodiment, the light-emitting area can emit white light; and a control module 4, which is installed on the second support part 12 and electrically connected to the annular light-emitting lamp plate 3.

[0032] In this embodiment, the control module 4 controls the annular light-emitting plate 3. The control module 4 controls the light-emitting zones of different areas to be activated one by one, with only one light-emitting zone illuminating and emitting light at a time. When different light-emitting zones are illuminated, the detection camera takes pictures of the workpiece to determine whether there are minor defects in certain areas of the workpiece. After all the light-emitting zones are illuminated, the entire outer surface of the workpiece is inspected. During the inspection process, the detection camera 100 can make multiple comparisons using different light angles, thereby more accurately detecting minor defects in the workpiece.

[0033] It should also be noted that the inspection camera 100 can stitch all images together to form a 2.5D image of the workpiece, thereby more accurately detecting minute surface defects on the workpiece.

[0034] Optionally, the spherical integrating detection light source further includes a support frame 5 for supporting the detection camera 100; an annular protrusion 21 is formed at the bottom end of the integrating hemispherical shell 2, and the support frame 5 is fixedly connected to the first bearing part 11 and presses down on the annular protrusion 21. In this embodiment, the support frame 5 provides support for the detection camera 100 and ensures that the detection camera 100 can be installed in a suitable position. Figure 3 The bottom end of the support frame 5 applies downward pressure to the annular protrusion 21, thereby improving the fixing effect of the annular protrusion 21.

[0035] Optionally, the spherical integrating detection light source also includes a pressure ring 6; the pressure ring 6 presses against the annular protrusion 21, and the support frame 5 presses and fixes the pressure ring 6. The pressure ring 6 applies pressure to the annular protrusion 21, thereby ensuring that the annular protrusion 21 is installed stably and reliably, and avoiding shaking or other problems of the integrating hemisphere shell 2.

[0036] Optionally, the support frame 5 includes several support arms 51 and a support ring 52, the support ring 52 being used to support the detection camera 100; the support ring 52 is located on the top side of the integrating hemispherical shell 2, and the two ends of the support arms 51 are detachably connected to the first bearing portion 11 and the support ring 52, respectively. In this embodiment, the two ends of the support arms 51 are detachably connected to the first bearing portion 11 and the support ring 52, respectively. Therefore, during the assembly process, the support arms 51 and the first bearing portion 11 can be fixed first, and then the support ring 52 and the support arms 51 can be fixedly connected last. This installation method is simpler and easier to implement.

[0037] Optionally, the integrating hemispherical shell 2 is provided with a detection hole 201 corresponding to the inner hole of the support ring 52; the detection hole 201 is coaxial with the light output hole 13. The inspection camera 100 takes pictures of the workpiece through the detection hole 201.

[0038] Optionally, each light-emitting zone is equipped with several white LED beads; all white LED beads are arranged in a circular array around the light-emitting aperture 13.

[0039] Optionally, a protective cover 7 is installed on each of the second support parts 12, and the control module 4 is located in the mounting cavity formed by the protective cover 7 and the second support part 12; heat dissipation hole groups 71 are provided on both opposite sides of the protective cover 7. The mounting cavity formed by the protective cover 7 and the second support part 12, and the control module 4 is installed in the mounting cavity, can effectively protect the control module 4 and reduce the possibility of damage to the control module.

[0040] Optionally, the annular mounting groove 14 is connected to the annular mounting groove 14 via a connecting channel; the annular light-emitting plate 3 is connected to a plug-in connector 8, which is located in the connecting channel. In this embodiment, the annular light-emitting plate 3 is connected to the control module 4 via the plug-in connector 8. The plug-in connection method of the plug-in connector 8 makes the installation and connection of the annular light-emitting plate 3 simpler.

[0041] Optionally, the inner wall surface of the integral hemispherical shell 2 is a diffuse surface.

[0042] Example 2 This embodiment discloses a visual inspection device, including a spherical integral detection light source as described in any one of Embodiment 1. The visual inspection device also includes an inspection camera 100, which is mounted on a support frame 5 and takes pictures of the workpiece from top to bottom.

[0043] It should also be noted that the testing camera 100 includes a camera body and a lens. The assembly method of the camera body and the lens is the existing method, so it will not be described in detail.

[0044] 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 spherical integrating detection light source, characterized in that, include: The stage (1) is provided with a first support part (11) and a second support part (12), and the first support part (11) is provided with a light-emitting hole (13). The integrating hemispherical shell (2) is fixedly connected to the first support part (11), and the first support part (11) is provided with an annular mounting groove (14) around the light outlet hole (13). An annular light outlet plate (3) for emitting light to the inner wall spherical surface of the integrating hemispherical shell (2) is installed in the annular mounting groove (14). The ring-shaped light-emitting plate (3) is divided into several light-emitting areas. The light emitted by each light-emitting area is the same color, and each light-emitting area can be controlled to start and stop independently. The control module (4) is installed on the second support part (12) and is electrically connected to the annular light-emitting plate (3).

2. The spherical integrating detection light source according to claim 1, characterized in that, It also includes a support frame (5) for supporting the detection camera (100); The bottom end of the integral hemispherical shell (2) forms an annular protrusion (21), and the support frame (5) is fixedly connected to the first bearing part (11) and presses down the annular protrusion (21).

3. The spherical integrating detection light source according to claim 2, characterized in that, It also includes a pressure ring (6); The pressure ring (6) presses on the annular protrusion (21), and the support frame (5) presses and fixes the pressure ring (6).

4. The spherical integrating detection light source according to claim 2, characterized in that, The support frame (5) includes several support arms (51) and a support ring (52), the support ring (52) being configured to support the detection camera (100). The support ring (52) is located on the top side of the integral hemispherical shell (2), and the two ends of the support arm (51) are detachably connected to the first bearing part (11) and the support ring (52).

5. The spherical integrating detection light source according to claim 4, characterized in that, The integral hemispherical shell (2) is provided with a detection hole (201) corresponding to the inner hole of the support ring (52). The detection hole (201) is coaxial with the light output hole (13).

6. The spherical integrating detection light source according to claim 1, characterized in that, Each of the light-emitting areas is equipped with several white LED beads; All the white LED beads are arranged in a circular array around the light-emitting hole (13).

7. The sphere integrating detection light source according to claim 1, characterized in that, Each second support portion (12) is equipped with a protective cover (7), and the control module (4) is located in the mounting cavity formed by the protective cover (7) and the second support portion (12); The protective cover (7) has heat dissipation hole groups (71) on both opposite sides.

8. The sphere integrating detection light source according to claim 7, characterized in that, The annular mounting groove (14) is connected to the annular mounting groove (14) through a connecting channel. The annular light-emitting plate (3) is connected to a plug connector (8), which is located in the connection channel.

9. The spherical integrating detection light source according to claim 1, characterized in that, The inner wall surface of the integral hemispherical shell (2) is a diffuse surface.

10. A visual inspection device, characterized in that, It includes a spherical integral detection light source as described in any one of claims 1 to 9.

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