Light source device and visual inspection device

Abstract

The utility model relates to the technical field of optical detection, and discloses a light source device and a visual inspection device.The light source device comprises an arc-shaped shell, and an arc-shaped lamp panel is installed on the inner wall face of the arc-shaped shell; the diffusion plate is mounted on the light emitting side of the arc-shaped lamp panel and is bent into an arc-shaped structure parallel to the arc-shaped lamp panel; the detection hole penetrates through the arc-shaped shell and the diffusion plate; two opposite bottom end parts of the arc-shaped shell are respectively provided with an extension part, the two extension parts are symmetrically arranged relative to the center line of the detection hole, and the extension parts are provided with total reflection surfaces used for reflecting side images of a workpiece to the detection hole. According to the light source device and the visual inspection device, the inspection cost can be reduced, the size of inspection equipment can be reduced, and the workpiece inspection efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical detection, in particular to a light source device and a visual detection device. Background Art

[0002] Some inspection processes require the use of an arc-shaped light source. This light source consists of an arc-shaped housing and a diffuser. A curved light panel is mounted on the inner wall of the arc-shaped housing. The diffuser is mounted on the light-emitting side of the curved light panel and is curved into an arc parallel to the curved light panel. An inspection hole extends through the arc-shaped housing and the diffuser. An inspection camera is positioned at the top of the inspection hole to inspect the top surface of the workpiece. Existing light source devices of this type are unable to reflect images of the workpiece's side surfaces to the inspection camera, necessitating the installation of an additional visual inspection device to inspect the side surfaces of the workpiece. This hinders the cost and size of the inspection equipment.

[0003] In view of this, it is necessary to design a light source device and a visual inspection device that can help reduce inspection costs and reduce the volume of inspection equipment.

[0004] The above information is presented as background information only to assist with an understanding of the present disclosure and is not a determination or admission that any of the above may be applicable as prior art with respect to the present disclosure. Utility Model Content

[0005] The utility model provides a light source device and a visual detection device, which can help reduce detection costs and reduce the volume of detection equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A light source device comprises: an arc-shaped housing, an arc-shaped lamp board mounted on an inner wall surface of the arc-shaped housing; a diffuser mounted on a light-emitting side of the arc-shaped lamp board and bent into an arc-shaped structure parallel to the arc-shaped lamp board; and a detection hole extending through the arc-shaped housing and the diffuser.

[0008] Two opposite bottom ends of the arc-shaped shell are both formed with extension parts, and the two extension parts are symmetrically arranged about the center line of the detection hole, and the extension parts have a total reflection surface for reflecting the side image of the workpiece to the detection hole.

[0009] Optionally, the arc bending angles of the arc-shaped light panel and the diffuser plate are not less than 180°.

[0010] Optionally, the light source device further comprises a mounting tube, wherein a first through hole is formed on the arc-shaped housing, a second through hole is formed on the arc-shaped light panel corresponding to the first through hole, and a third through hole is formed on the diffuser plate corresponding to the first through hole, and the mounting tube is sequentially inserted into the first through hole, the second through hole, and the third through hole.

[0011] The inner wall of the first through hole and the inner wall of the third through hole are both in contact with the outer wall of the mounting tube, and the inner hole of the mounting tube constitutes the detection hole.

[0012] Optionally, the bottom end of the mounting tube does not protrude from the bottom surface of the diffusion plate.

[0013] Optionally, the extension portion includes a support portion and a total reflection lens detachably mounted on the support portion;

[0014] The total reflection lens is attached to the slope surface of the support portion so that the total reflection mirror is tilted.

[0015] Optionally, a cooling channel is provided in the extension portion, and the arc-shaped lamp panel is in contact with the inner wall surface of the arc-shaped housing.

[0016] Optionally, the light source device further comprises a supporting member for supporting the workpiece, wherein a top surface of the supporting member is lower than the vertex of the total reflection surface, and a top surface of the supporting member is higher than the lowest point of the total reflection surface.

[0017] Optionally, the arc-shaped lamp panel includes an arc-shaped circuit board and lamp beads arranged in an array on the circuit board, and the lamp beads face the diffuser plate.

[0018] A visual inspection device comprising a detection camera and a light source device as described in any one of the above items;

[0019] The lens of the inspection camera faces the inspection hole for inspecting the top surface and side surfaces of the workpiece.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The light source device and visual inspection device provided by the utility model can reflect the surface images of the opposite side surfaces of the workpiece into the inspection hole through two symmetrically arranged extension parts, so that the inspection camera can simultaneously inspect the top surface and side surfaces of the workpiece without the need for additional inspection devices for inspecting the side surfaces of the workpiece, which is beneficial to reducing inspection costs and reducing the volume of the inspection equipment.

[0022] The present invention has other features and advantages, which will be apparent from the accompanying drawings and subsequent detailed descriptions incorporated herein, or will be described in detail in the accompanying drawings and subsequent detailed descriptions incorporated herein, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic top view of a light source device provided by an embodiment of the present utility model;

[0025] Figure 2 yes Figure 1 Schematic diagram of the AA section structure;

[0026] Figure 3 It is a schematic diagram of the assembly structure of another light source device provided by an embodiment of the present utility model.

[0027] Figure numerals: 1, arc-shaped shell; 101, total reflection surface; 11, arc-shaped lamp board; 111, circuit board; 112, lamp beads; 12, extension part; 121, support part; 122, total reflection lens; 2, diffusion plate; 3, detection hole; 4, mounting tube; 6, supporting member. DETAILED DESCRIPTION

[0028] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0029] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0030] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0031] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0032] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0033] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0034] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0035] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating 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, it should not be understood as a limitation on the embodiments of the present application.

[0036] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated 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 elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] Example 1

[0038] In view of the aforementioned deficiencies in existing light source devices, the applicant, drawing upon years of extensive practical experience and expertise in the design and manufacture of such products, combined with the application of academic knowledge, has actively engaged in research and innovation, hoping to develop a technology that can address these deficiencies and make light source devices more practical. Through continuous research and design, repeated trial production and improvements, the applicant has finally created the present utility model, which possesses truly practical value.

[0039] The embodiment of the present utility model provides a light source device, which can further simplify the detection equipment, reduce the detection cost and reduce the volume of the detection equipment.

[0040] Please refer to Figures 1 to 3 The light source device includes: an arc-shaped shell 1, an arc-shaped lamp board 11 is installed on the inner wall surface of the arc-shaped shell 1; a diffuser plate 2, which is installed on the light-emitting side of the arc-shaped lamp board 11 and bent into an arc structure parallel to the arc-shaped lamp board 11; and a detection hole 3, which passes through the arc-shaped shell 1 and the diffuser plate 2.

[0041] The two opposite bottom ends of the arc-shaped housing 1 are each formed with an extension portion 12, and the two extension portions 12 are symmetrically arranged about the center line of the detection hole 3. The extension portions 12 are provided with a total reflection surface 101 for reflecting the side image of the workpiece 100 toward the detection hole 3. That is, the workpiece 100 is inspected between the two extension portions 12, and the two opposite side surfaces of the workpiece 100 are illuminated by the diffuse light of the arc-shaped light panel 11, and the surface images of the two opposite side surfaces are reflected by the total reflection surface 101 and enter the inspection camera 7, so that the inspection camera 7 can simultaneously inspect the top surface and the two opposite side surfaces of the workpiece 100, thereby improving the inspection efficiency and eliminating the need for additional visual inspection equipment. This reduces the cost of the inspection equipment while also helping to reduce the total volume of the inspection equipment.

[0042] It should also be noted that a reflective coating may be directly coated on the extension portion 12 to form the desired total reflection surface.

[0043] Optionally, the arc bending angles of the arc-shaped lamp panel 11 and the diffuser plate 2 are not less than 180°, so as to better illuminate the top surface and side surfaces of the workpiece 100 .

[0044] Optionally, the light source device further includes a mounting tube 4, wherein the arc-shaped shell 1 is provided with a first through-hole, the arc-shaped lamp panel 11 is provided with a second through-hole corresponding to the first through-hole, and the diffuser plate 2 is provided with a third through-hole corresponding to the first through-hole, and the center lines of the first through-hole, the second through-hole, and the third through-hole coincide with each other. The mounting tube 4 is sequentially inserted into the first through-hole, the second through-hole, and the third through-hole; the inner wall of the first through-hole and the inner wall of the third through-hole both fit in contact with the outer wall of the mounting tube 4, and the inner hole of the mounting tube 4 constitutes the detection hole 3. Specifically, the provision of the mounting tube 4 can, on the one hand, better position the diffuser plate 2, improve the installation stability of the diffuser plate 2, and prevent the diffuser plate 2 from shaking; on the other hand, the mounting tube 4 can prevent the light from the lamp bead 112 from directly irradiating the top surface of the workpiece 100, making the illumination effect on the workpiece 100 more uniform, which will be beneficial to improving the accuracy of the surface detection of the workpiece 100. Preferably, the hole wall of the second through-hole fits in contact with the outer wall of the mounting tube 4.

[0045] Optionally, the bottom end of the mounting tube 4 does not protrude from the bottom surface of the diffuser plate 2 , so as to avoid the portion protruding from the bottom surface of the diffuser plate 2 from blocking the diffused light.

[0046] Optionally, the extension portion 12 includes a support portion 121 and a fully reflective lens 122 detachably mounted on the support portion 121. The fully reflective lens 122 conforms to the sloped surface of the support portion 121, thereby tilting the fully reflective lens 122. The fully reflective lens 122 is detachably mounted on the support portion 121, allowing for a replacement if the fully reflective lens 12 becomes severely scratched. The mirror surface of the fully reflective lens 12 is the fully reflective surface 101.

[0047] Optionally, a cooling channel is provided in the extension 12, and the arc-shaped lamp board 11 is in contact with the inner wall of the arc-shaped housing 1. The extension 12 has a certain function of cooling the circuit board 111. That is, the cooling channel can maintain the temperature of the arc-shaped housing 1 within a suitable range, thereby preventing the circuit board 111 from overheating and absorbing the heat of the circuit board 111.

[0048] Optionally, the light source device also includes a supporting member 6 for supporting the workpiece 100, the top surface of the supporting member 6 is lower than the vertex of the total reflection surface 101, and the top surface of the supporting member 6 is higher than the lowest point of the total reflection surface 101, so that the workpiece 100 is maintained at a suitable height, that is, the workpiece is in the arc light board 11 and can illuminate the workpiece, and the total reflection surface 101 can better reflect the side image of the workpiece 100 to the height of the detection hole 3.

[0049] Optionally, the arc-shaped lamp board 11 includes an arc-shaped circuit board 111 and lamp beads 112 mounted in an array on the circuit board 111, and the lamp beads 112 face the diffuser plate.

[0050] Example 2

[0051] This embodiment discloses a visual inspection device, including an inspection camera 7 and a light source device as in the first embodiment; wherein the lens of the inspection camera 7 faces the inspection hole 3 for inspecting the top surface and side surfaces of the workpiece 100 .

[0052] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A light source device, comprising: An arc-shaped housing (1), wherein an arc-shaped lamp panel (11) is mounted on the inner wall surface of the arc-shaped housing (1); a diffusion plate (2), mounted on the light-emitting side of the arc-shaped lamp panel (11) and bent into an arc-shaped structure parallel to the arc-shaped lamp panel (11); a detection hole (3), wherein the detection hole (3) passes through the arc-shaped housing (1) and the diffusion plate (2); and the characteristics are: Two opposite bottom ends of the arc-shaped housing (1) are each formed with an extension portion (12), and the two extension portions (12) are symmetrically arranged about the center line of the detection hole (3), and the extension portion (12) has a total reflection surface (101) for reflecting a side image of a workpiece (100) to the detection hole (3).

2. The light source device according to claim 1, wherein The arc bending angles of the arc-shaped lamp panel (11) and the diffusion plate (2) are not less than 180°.

3. The light source device according to claim 1, wherein It also includes a mounting tube (4), wherein the arc-shaped housing (1) is provided with a first through hole, the arc-shaped lamp panel (11) is provided with a second through hole corresponding to the first through hole, the diffuser plate (2) is provided with a third through hole corresponding to the first through hole, and the mounting tube (4) is sequentially inserted into the first through hole, the second through hole, and the third through hole; The inner wall of the first through hole and the inner wall of the third through hole both fit the outer wall of the mounting tube (4), and the inner hole of the mounting tube (4) constitutes the detection hole (3).

4. The light source device according to claim 3, wherein The bottom end of the mounting tube (4) does not protrude from the bottom surface of the diffusion plate (2).

5. The light source device according to claim 1, wherein The extension portion (12) comprises a support portion (121) and a total reflection lens (122) detachably mounted on the support portion (121); The total reflection lens (122) is attached to the slope surface of the support portion (121) so that the total reflection mirror is arranged tilted.

6. The light source device according to claim 1, wherein A cooling channel is provided in the extension portion (12), and the arc-shaped lamp panel (11) is fitted to the inner wall surface of the arc-shaped housing (1).

7. The light source device according to claim 1, wherein It also includes a supporting member (6) for supporting the workpiece (100), wherein the top surface of the supporting member (6) is lower than the vertex of the total reflection surface (101), and the top surface of the supporting member (6) is higher than the lowest point of the total reflection surface (101).

8. The light source device according to claim 1, wherein The arc-shaped lamp panel (11) comprises an arc-shaped circuit board (111) and lamp beads (112) mounted in an array on the circuit board (111), and the lamp beads (112) face the diffusion plate.

9. A visual inspection device, characterized in that: It comprises a detection camera (7) and a light source device as claimed in any one of claims 1 to 8; The lens of the detection camera (7) faces the detection hole (3) for detecting the top surface and side surfaces of the workpiece (100).

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