Workpiece detection light source device and visual detection mechanism

Abstract

The embodiment of the utility model discloses a workpiece detection light source device and a visual detection mechanism, which are used for solving the technical problem of poor imaging effect caused by the fact that light rays emitted by the existing light source device cannot completely cover a workpiece to be detected. The embodiment of the utility model comprises an outer shell, a light source body, a light guide plate and a reflecting mirror, the light guide plate is installed on the outer shell, the light source body is installed on the outer shell and arranged around the light guide plate, the light guide plate is provided with a reflecting part, the outer shell is provided with a placing position used for placing a workpiece to be detected, the placing position is located below the light guide plate, and the reflecting mirror is arranged around the placing position; when the light source body emits light, part of the light is reflected downwards to the upper surface of the workpiece at the placing position through the reflecting part of the light guide plate, and the other part of the light is reflected downwards to the reflecting mirror through the reflecting part of the light guide plate and then reflected to the side face of the workpiece at the placing position through the reflecting mirror, so that the imaging effect is improved, and the detection efficiency is improved.

Description

Technical Field

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

[0002] The detection of existing workpieces is generally completed by a vision detection mechanism. The vision detection mechanism includes a detection camera module and a light source device. Among them, the light source device is used to emit irradiation light onto the surface to be measured of the workpiece, and the detection camera module is used to obtain the light reflected from the surface to be measured to form an image.

[0003] Taking a screw as an example of the workpiece, most of the existing light source devices can only emit straight-line light. When the straight-line light irradiates the screw, only part of the surface of the screw can be covered by the light, which will lead to poor subsequent imaging effects.

[0004] Therefore, finding a technical solution that can solve the above technical problems has become an important topic for those skilled in the art to study. Summary of the Utility Model

[0005] The embodiments of the utility model disclose a workpiece detection light source device and a vision detection mechanism, which are used to solve the technical problem that the light emitted by the existing light source device cannot completely cover the screw to be detected, resulting in poor imaging effects.

[0006] The embodiments of the utility model provide a workpiece detection light source device, including a housing, a light source body, a light guide plate, and a reflector;

[0007] The light guide plate is installed on the housing, the light source body is installed on the housing and arranged around the light guide plate. The light guide plate is provided with a reflection part. The housing is provided with a placement position for placing the screw to be detected. The placement position is below the light guide plate, and the reflector is arranged around the placement position;

[0008] When the light source body emits light, part of the light is reflected downward by the reflection part of the light guide plate to the upper surface of the screw at the placement position, and the other part of the light is reflected downward by the reflection part of the light guide plate to the reflector and then reflected by the reflector to the side surface of the screw at the placement position.

[0009] Optionally, the reflection part is a reflection concave point;

[0010] The number of the reflection concave points is multiple and is arranged in an array on the light guide plate.

[0011] Optionally, the reflector is a triangular reflector;

[0012] Two right-angled surfaces in the triangular mirror are attached to the outer housing, and the inclined surface in the triangular mirror is the reflecting surface.

[0013] Optionally, the light source body is an LED light board.

[0014] Optionally, the central axes of the outer housing, the light guide plate, and the placement position coincide.

[0015] Optionally, an annular mounting groove is formed on the inner side wall of the outer housing;

[0016] The four peripheral edges of the light guide plate are fixedly embedded in the annular mounting groove.

[0017] An embodiment of the present invention provides a vision inspection mechanism, including an inspection camera, a lens connected to the inspection camera, and the above workpiece inspection light source device;

[0018] The inspection camera is located above the light guide plate of the workpiece inspection light source device.

[0019] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0020] The workpiece inspection light source device in this embodiment can be applied to the vision inspection of screws. During inspection, when the light source body emits light, part of the light is reflected downward by the reflection part of the light guide plate to the upper surface of the screw at the placement position, and another part of the light is reflected downward by the reflection part of the light guide plate to the reflector and then reflected by the reflector to the side surface of the screw at the placement position. Through the above design, the light emitted by the workpiece inspection light source device in this embodiment can irradiate both the outer surface and the side surface of the screw at the same time, improving the imaging effect, and can realize the simultaneous detection of the features on the upper surface and the side surface of the screw, greatly improving the detection efficiency. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of a workpiece inspection light source device provided by an embodiment of the present invention;

[0023] Illustration: Outer housing 1, light source body 2; light guide plate 3; reflector 4; placement position 5; inspection camera 6; lens 7; workpiece (screw) A. Detailed Embodiments

[0024] An embodiment of the utility model discloses a workpiece detection light source device and a vision detection mechanism, which are used to solve the technical problem that the light emitted by the existing light source device cannot completely cover the workpiece to be detected, resulting in poor imaging effect.

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the following further detailed description of the utility model will be given in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the utility model.

[0026] Please refer to Figure 1 , a workpiece detection light source device provided by an embodiment of the utility model includes a housing 1, a light source body 2, a light guide plate 3 and a reflector 4;

[0027] The light guide plate 3 is installed on the housing 1, the light source body 2 is installed on the housing 1 and arranged around the light guide plate 3, the light guide plate 3 is provided with a reflection part, the housing 1 is provided with a placement position 5 for placing the workpiece to be detected, the placement position 5 is below the light guide plate 3, and the reflector 4 is arranged around the placement position 5;

[0028] When the light source body 2 emits light, part of the light is reflected downward by the reflection part of the light guide plate 3 to the upper surface of the workpiece at the placement position 5, and another part of the light is reflected downward by the reflection part of the light guide plate 3 to the reflector 4 and then reflected by the reflector 4 to the side surface of the workpiece at the placement position 5.

[0029] The workpiece detection light source device in this embodiment can be applied to the vision detection of screws. During detection, when the light source body 2 emits light, part of the light is reflected downward by the reflection part of the light guide plate 3 to the upper surface of the screw at the placement position 5, and another part of the light is reflected downward by the reflection part of the light guide plate 3 to the reflector 4 and then reflected by the reflector 4 to the side surface of the screw at the placement position 5. Through the above design, the light emitted by the workpiece detection light source device in this embodiment can irradiate the outer surface and the side surface of the screw at the same time, improving the imaging effect, and can realize the simultaneous detection of the features on the upper surface and the side surface of the screw, greatly improving the detection efficiency.

[0030] Further, the reflection part in this embodiment is specifically a reflection concave point;

[0031] The number of the reflection concave points is multiple and they are arranged in an array on the light guide plate 3.

[0032] It should be noted that multiple reflecting concave points are arranged in an array on the light guide plate 3, which can effectively reflect all the light emitted by the light source body 2 to the lower part of the light guide plate 3.

[0033] Furthermore, the reflecting mirror 4 in this embodiment is a triangular reflecting mirror;

[0034] Two right-angle surfaces of the triangular reflecting mirror are attached to the outer housing 1, and the inclined surface of the triangular reflecting mirror is the reflecting surface. Specifically, the reflecting surfaces all face the placement position 5.

[0035] It should be noted that the light emitted by the light source body is reflected to the lower part by the reflecting part on the light guide plate 3, and part of the light directly falls on the reflecting surface of the triangular reflecting mirror, and the reflecting surface of the triangular reflecting mirror reflects this part of the light to the side of the workpiece.

[0036] Furthermore, the light source body 2 in this embodiment is an LED light board.

[0037] It should be noted that the light source body 2 in this embodiment is preferably an LED light board. This embodiment does not limit the specific type of the light source body 2, and designers can select a suitable type of light source body 2 according to actual needs.

[0038] Furthermore, the central axes of the outer housing 1, the light guide plate 3, and the placement position 5 in this embodiment coincide.

[0039] It should be noted that through the above design, the light emitted by the light source body can better irradiate the upper surface and side surface of the workpiece.

[0040] Furthermore, an annular installation groove is formed on the inner side wall of the outer housing 1 in this embodiment;

[0041] The four peripheral edges of the light guide plate 3 are fixedly embedded in the annular installation groove.

[0042] It should be noted that through the above design, the four peripheral edges of the light guide plate 3 can be in contact with the top groove wall and the bottom groove wall of the annular installation groove, and the installation is more firm. In addition, the light guide plate 3 in this embodiment can also be detachably installed in the annular installation groove, which is convenient for operators to replace or repair.

[0043] Please refer to Figure 1 , a vision detection mechanism provided by an embodiment of the present invention includes a detection camera 6, a lens 7 connected to the detection camera 6, and the above workpiece detection light source device;

[0044] The detection camera 6 is located above the light guide plate 3 of the workpiece detection light source device.

[0045] It should be noted that the visual detection mechanism in this embodiment can be applied to the visual detection of screws. During detection, when the light source body 2 emits light, part of the light is reflected downward by the reflection part of the light guide plate 3 to the upper surface of the screw at the placement position 5, and the other part of the light is reflected downward by the reflection part of the light guide plate 3 to the reflector 4 and then reflected by the reflector 4 to the side surface of the screw at the placement position 5. Finally, the detection camera 6 can perform detection through the light guide plate 3.

[0046] Through the above design, the light emitted by the workpiece detection light source device in this embodiment can irradiate both the outer surface and the side surface of the screw at the same time, so that it can detect the features of the upper surface and the side surface of the screw at the same time, the imaging effect is more ideal, and the detection efficiency is greatly improved.

[0047] The above has introduced in detail a workpiece detection light source device and a visual detection mechanism provided by the present utility model. For those of ordinary skill in the art, according to the idea of the embodiments of the present utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A workpiece detection light source device, characterized in that It includes a housing (1), a light source body (2), a light guide plate (3) and a reflector (4). The light guide plate (3) is installed on the housing (1), the light source body (2) is installed on the housing (1) and is arranged around the light guide plate (3). The light guide plate (3) is provided with a reflection part. The housing (1) is provided with a placement position (5) for placing the workpiece to be detected, and the placement position (5) is below the light guide plate (3). The reflector (4) is arranged around the placement position (5). When the light source body (2) emits light, part of the light is reflected downward by the reflection part of the light guide plate (3) to the upper surface of the workpiece at the placement position (5), and the other part of the light is reflected downward by the reflection part of the light guide plate (3) to the reflector (4) and then reflected by the reflector (4) to the side surface of the workpiece at the placement position (5).

2. The workpiece detection light source device according to claim 1, wherein The reflection part is a reflection concave point. The number of the reflection concave points is multiple and they are arranged in an array on the light guide plate (3).

3. The workpiece detection light source device according to claim 1, characterized in that, The reflector (4) is a triangular reflector. Two right-angle surfaces of the triangular reflector are attached to the housing (1), and the inclined surface of the triangular reflector is the reflection surface.

4. The workpiece detection light source device according to claim 1, wherein The light source body (2) is an LED light board.

5. The workpiece detection light source device according to claim 1, characterized in that The central axes of the housing (1), the light guide plate (3) and the placement position (5) coincide.

6. The workpiece detection light source device according to claim 1, wherein, An annular installation groove is formed on the inner side wall of the housing (1). The four peripheral edges of the light guide plate (3) are fixedly embedded in the annular installation groove.

7. A visual inspection mechanism, characterized in that, It includes a detection camera (6), a lens (7) connected to the detection camera (6) and a workpiece detection light source device according to any one of claims 1 to 6. The detection camera (6) is located above the light guide plate (3) of the workpiece detection light source device.

Images