Annular light source device and visual inspection system

Abstract

The embodiment of the utility model discloses an annular light source device and a visual inspection system, which are used for solving the technical problem that an annular light source device in the prior art is easy to interfere with a lifting device for adsorbing a workpiece to be detected. The embodiment of the utility model comprises an annular shell, a first PCB (Printed Circuit Board) lamp panel and a second PCB lamp panel, the annular shell is provided with a cambered surface side edge and a plane side edge connected with the cambered surface side edge, an arc-shaped window and a groove-shaped avoiding window communicated with the arc-shaped window are formed in the annular shell, and the first PCB lamp panel and the second PCB lamp panel are installed in the annular shell. The first PCB lamp panel corresponds to the arc-shaped window, and the second PCB lamp panel corresponds to the avoiding window.

Description

Technical Field

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

[0002] The existing workpiece inspection work is generally completed by a visual inspection system, which specifically includes an inspection camera, a lens, and a light source device. The light source device is used to provide irradiation light to the surface of the workpiece to be inspected, and the inspection camera is used to obtain the light reflected from the surface to be inspected to form an image. In addition, according to the inspection requirements, the light source device is also divided into a ring light source device, a linear light source device, etc.

[0003] In the prior art, in order to facilitate the grabbing of the workpiece to be inspected, a lifting device is installed on the machine platform of the visual inspection system, and the lifting device is equipped with a suction head to absorb the workpiece. Specifically, when the visual inspection system adopts an annular light source device, the lifting device and the suction head will be lifted and lowered back and forth in the annular window on the annular light source, and the lifting device is very close to the inner wall of the annular window. Once the horizontal displacement of the lifting device has a slight deviation, the lifting device will interfere with the annular window, thereby causing damage to the annular light source device or the lifting device.

[0004] Therefore, finding a technical solution that can solve the above technical problems has become an important topic studied by technical personnel in this field. Utility Model Content

[0005] The utility model discloses an annular light source device and a visual inspection system, which are used to solve the technical problem in the prior art that the annular light source device easily interferes with a lifting device for adsorbing a workpiece to be inspected.

[0006] The utility model embodiment provides an annular light source device, comprising an annular housing, a first PCB light board and a second PCB light board;

[0007] The annular shell has an arcuate side and a plane side connected to the arcuate side. The annular shell is provided with an arcuate window and an avoidance window connected to the arcuate window. The first PCB light board and the second PCB light board are installed inside the annular shell, and the first PCB light board corresponds to the arcuate window, and the second PCB light board corresponds to the avoidance window.

[0008] Optionally, the avoidance window is a slot-shaped window.

[0009] Optionally, the annular shell includes an annular base and an annular top cover covering the annular base.

[0010] Optionally, the annular base includes a first engaging groove arranged at the periphery of the arc-shaped window;

[0011] The first PCB lamp board is snap-fitted and installed in the first snap-fitting slot.

[0012] Optionally, the annular base further comprises a second engaging groove arranged at the periphery of the avoidance window;

[0013] The second PCB lamp board is snap-fitted and installed in the second snap-fitting slot.

[0014] Optionally, the first PCB lamp board includes a first PCB board and a first lamp bead arranged on the first PCB board;

[0015] The first PCB board is a curved PCB board having the same curvature as that of the curved window.

[0016] Optionally, the second PCB lamp board includes a second PCB board and a second lamp bead arranged on the second PCB board;

[0017] The second PCB board is a planar PCB board.

[0018] Optionally, it further comprises fixing screws, the top surface of the annular base is provided with a plurality of threaded holes, the annular top cover is provided with a plurality of mounting holes, and the plurality of mounting holes are provided in a one-to-one correspondence with the plurality of threaded holes;

[0019] The screw rod of the fixing screw passes through the mounting hole and is threadedly connected with the threaded hole so that the annular top cover is fixed on the annular base.

[0020] Optionally, the annular housing is further provided with a wire threading hole, a wire is passed through the wire threading hole, and the first PCB light board and the second PCB light board are both connected to the wire.

[0021] An embodiment of the utility model provides a visual inspection system, comprising an inspection camera, a lens connected to the inspection camera, and the above-mentioned annular light source device.

[0022] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:

[0023] The annular shell of the annular light source device of the present embodiment has a flat side, which is different from the annular shell of the annular light source device in the prior art which adopts a circular ring structure. The above design can prevent the annular shell of the annular light source device from interfering with other equipment and machines. The annular shell of the annular light source device in the present embodiment is provided with an arc window and an avoidance window connected to the arc window. The above design and the avoidance window reserve sufficient space for the lifting device and the adsorption head to pass through, thereby avoiding interference between the annular light source device and the lifting device and ensuring that the annular light source device can operate stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a ring-shaped light source device provided in an embodiment of the utility model;

[0026] Figure 2 An exploded view of the structure of a ring-shaped light source device provided in an embodiment of the utility model;

[0027] Figure 3 A schematic structural diagram of a ring-shaped base of a ring-shaped light source device provided by an embodiment of the utility model;

[0028] Illustration: annular housing 1; first PCB light board 2; second PCB light board 3; arc window 4; avoidance window 5; wire 6; annular top cover 7; annular base 8; arc side 9; plane side 10; mounting hole 11; threaded hole 12; first snap-fitting groove 13; second snap-fitting groove 14. DETAILED DESCRIPTION

[0029] The utility model discloses an annular light source device and a visual inspection system, which are used to solve the technical problem in the prior art that the annular light source device easily interferes with a lifting device for adsorbing a workpiece to be inspected.

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 3 , an annular light source device provided by an embodiment of the utility model comprises an annular housing 1, a first PCB light board 2 and a second PCB light board 3;

[0032] The annular shell 1 has an arcuate side 9 and a plane side 10 connected to the arcuate side 9. The annular shell 1 is provided with an arcuate window 4 and an avoidance window 5 connected to the arcuate window 4. The first PCB light board 2 and the second PCB light board 3 are installed inside the annular shell 1, and the first PCB light board 2 corresponds to the arcuate window 4, and the second PCB light board 3 corresponds to the avoidance window 5.

[0033] The annular shell 1 of the annular light source device of the present embodiment has a flat side 10, which is different from the annular shell 1 of the annular light source device in the prior art which adopts a circular ring structure. The above design can prevent the annular shell 1 of the annular light source device from interfering with other equipment and machines. The annular shell 1 of the annular light source device in the present embodiment is provided with an arc window 4 and an avoidance window 5 connected to the arc window 4. The above design reserves enough space in the avoidance window 5 for the lifting device and the adsorption head to pass through, thereby avoiding interference between the annular light source device and the lifting device, and ensuring that the annular light source device can operate stably. In addition, in the present embodiment, the PCB light board adopts a splicing design, which is specifically divided into a first PCB light board 2 and a second PCB light board 3, and the first PCB light board 2 and the second PCB light board 3 are respectively set corresponding to the arc window 4 and the avoidance window 5, which can prevent the lifting device from causing damage to the PCB light board.

[0034] Furthermore, the avoidance window 5 in this embodiment is a slot-shaped window.

[0035] It should be noted that the specific shape of the avoidance window 5 in this embodiment can be designed according to the appearance of the lifting device, and this embodiment does not limit this.

[0036] Furthermore, the annular housing 1 in this embodiment includes an annular base 8 and an annular top cover 7 covering the annular base 8 .

[0037] It should be noted that, in order to facilitate heat dissipation of the first PCB light board 2 and the second PCB light board 3, the above-mentioned annular base 8 may preferably be an annular base 8 with a heat dissipation function.

[0038] Furthermore, the annular base 8 in this embodiment includes a first engaging groove 13 disposed on the periphery of the arc-shaped window 4;

[0039] The first PCB lamp board 2 is snap-fitted and installed in the first snap-fitting slot 13 .

[0040] It should be noted that the first engaging groove 13 is specifically an arc-shaped engaging groove having the same curvature as the arc-shaped window 4 . Through the above design, the first PCB lamp board 2 can be more stably fixed on the annular base 8 .

[0041] Furthermore, the annular base 8 in this embodiment further includes a second engaging groove 14 disposed on the periphery of the avoidance window 5;

[0042] The second PCB lamp board 3 is snap-fitted and installed in the second snap-fitting slot 14 .

[0043] It should be noted that the above-mentioned second snap-fitting groove 14 is specifically a structure that matches the shape of the avoidance window 5. Since the avoidance window 5 in this embodiment is a rectangular window, the second snap-fitting groove 14 is specifically a linear snap-fitting groove. Through the above-mentioned design, the second PCB lamp board 3 can be more stably fixed on the annular base 8.

[0044] Furthermore, the first PCB lamp board 2 in this embodiment includes a first PCB board and a first lamp bead arranged on the first PCB board;

[0045] The first PCB board is a curved PCB board having the same curvature as that of the curved window 4 .

[0046] The second PCB lamp board 3 in this embodiment includes a second PCB board and a second lamp bead arranged on the second PCB board;

[0047] The second PCB board is a planar PCB board.

[0048] It should be noted that, through the above design, the first PCB light board 2 and the second PCB light board 3 can be spliced ​​into a light source body that can emit annular light.

[0049] Furthermore, the annular light source device in this embodiment further includes fixing screws, the top surface of the annular base 8 is provided with a plurality of threaded holes 12, the annular top cover 7 is provided with a plurality of mounting holes 11, and the plurality of mounting holes 11 are provided in a one-to-one correspondence with the plurality of threaded holes 12;

[0050] The screw rod of the fixing screw passes through the mounting hole 11 and is threadedly connected to the threaded hole 12 so that the annular top cover 7 is fixed on the annular base 8 .

[0051] It should be noted that, through the above design, the operator can quickly disassemble and assemble the annular housing 1, which is conducive to improving work efficiency.

[0052] Furthermore, the annular housing 1 in this embodiment is further provided with a threading hole, a wire 6 is passed through the threading hole, and the first PCB light board 2 and the second PCB light board 3 are both connected to the wire 6 .

[0053] It should be noted that, through the above design, the wire 6 can only pass through the wire threading hole, which avoids the situation where the wire 6 is messy and ensures that the annular light source device is simple and beautiful.

[0054] An embodiment of the utility model provides a visual inspection system, comprising an inspection camera, a lens connected to the inspection camera, and the above-mentioned annular light source device.

[0055] It should be noted that the detection camera and the lens in this embodiment are located below the arc window 4 and the avoidance window 5 , and the workpiece is located above the arc window 4 and the avoidance window 5 .

[0056] The above is a detailed introduction to a ring-shaped light source device and a visual detection system provided by the present invention. For a person skilled in the art, according to the idea of ​​the embodiments of the present invention, there may be changes in the specific implementation method and the scope of application. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A ring light source device, characterized in that: It comprises an annular housing (1), a first PCB light board (2) and a second PCB light board (3); The annular housing (1) has an arcuate side edge (9) and a plane side edge (10) connected to the arcuate side edge (9); an arcuate window (4) and an avoidance window (5) connected to the arcuate window (4) are provided on the annular housing (1); the first PCB light board (2) and the second PCB light board (3) are installed inside the annular housing (1); the first PCB light board (2) corresponds to the arcuate window (4), and the second PCB light board (3) corresponds to the avoidance window (5).

2. The annular light source device according to claim 1, characterized in that: The avoidance window (5) is a slot-shaped window.

3. The annular light source device according to claim 1, characterized in that: The annular housing (1) comprises an annular base (8) and an annular top cover (7) covering the annular base (8).

4. The annular light source device according to claim 3, characterized in that: The annular base (8) comprises a first engaging groove (13) arranged on the periphery of the arc-shaped window (4); The first PCB light board (2) is snap-fitted and installed in the first snap-fitting slot (13).

5. The annular light source device according to claim 4, characterized in that: The annular base (8) further comprises a second engaging groove (14) arranged on the periphery of the avoidance window (5); The second PCB lamp board (3) is snap-fitted and installed in the second snap-fitting slot (14).

6. The annular light source device according to claim 1, characterized in that: The first PCB lamp board (2) comprises a first PCB board and a first lamp bead arranged on the first PCB board; The first PCB board is a curved PCB board having the same curvature as the curved window (4).

7. The annular light source device according to claim 2, characterized in that: The second PCB lamp board (3) comprises a second PCB board and a second lamp bead arranged on the second PCB board; The second PCB board is a planar PCB board.

8. The annular light source device according to claim 3, characterized in that: It also includes fixing screws, the top surface of the annular base (8) is provided with a plurality of threaded holes (12), the annular top cover (7) is provided with a plurality of mounting holes (11), and the plurality of mounting holes (11) are arranged in a one-to-one correspondence with the plurality of threaded holes (12); The screw rod of the fixing screw passes through the mounting hole (11) and is threadedly connected to the threaded hole (12) so that the annular top cover (7) is fixed to the annular base (8).

9. The annular light source device according to claim 1, characterized in that: The annular housing (1) is further provided with a wire threading hole, through which a wire (6) is passed, and the first PCB light board (2) and the second PCB light board (3) are both connected to the wire (6).

10. A visual inspection system, characterized in that: It comprises a detection camera, a lens connected to the detection camera, and the annular light source device according to any one of claims 1 to 9.

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