High-sensitivity PCBA (Printed Circuit Board Assembly) defect detection visual equipment

Abstract

The utility model discloses high-sensitivity PCBA (Printed Circuit Board Assembly) defect detection visual equipment, which relates to the technical field of visual detection equipment and comprises a base, the blocking cover is fixedly arranged at the top end of the base; the conveyor is fixedly arranged in the blocking cover and partially penetrates out of the blocking cover; the PCBA board is arranged on the conveyor and used for conveying the PCBA board on the inner side and the outer side of the blocking cover. The industrial camera is fixedly arranged in the blocking cover and is used for shooting the PCBA board; the light source is fixedly arranged in the blocking cover and is used for providing light for an industrial camera for shooting the PCBA board; the reflecting cover is fixedly arranged in the blocking cover, encloses the industrial camera and the light source and is used for gathering light diffused by the light source to the PCBA board; the utility model has the advantages that the reflecting cover is fixedly arranged in the blocking cover, the industrial camera and the light source are covered in the reflecting cover, and the light emitted by the light source is irradiated into the reflecting cover for light reflection, so that the light is gathered to the PCBA board, the utilization degree of the light source is increased, the overall brightness is improved, and the information accuracy and sensitivity of the industrial camera for shooting the PCBA board are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of visual inspection equipment, and more specifically to a high-sensitivity PCBA defect inspection visual equipment. Background Art

[0002] PCBA defect detection vision equipment is an intelligent device specially used for automatic and high-precision inspection of printed circuit board assemblies. It uses advanced machine vision technology and core components such as cameras, light sources, and image processing software to quickly and accurately identify and locate various potential defects on PCBA. This type of equipment is widely used in the electronics manufacturing industry and is of great significance for improving product quality, reducing production costs, and ensuring product reliability.

[0003] The existing PCBA visual defect detection device (such as Publication (Announcement) No.: CN217059985U, a PCBA defect detection device based on stereoscopic vision) uses a "first conveyor belt" to continuously and continuously convey the PCBA board to the detection position to improve efficiency;

[0004] The above-mentioned "PCBA defect detection device based on stereoscopic vision" lacks a component that provides a stable light environment, and the image information of the PCBA board is not accurate enough and has low sensitivity. In this regard, there is already (such as Publication (Announcement) No.: CN205920056U, a PCBA visual inspection machine) in which the "light source is a ring-shaped LED lamp, and the camera is placed directly above the ring-shaped cavity of the ring-shaped LED lamp" to provide a stable light environment for the shooting environment;

[0005] However, although the above-mentioned "PCBA visual inspection machine" is equipped with components for providing a stable light environment, part of the light source provided is directly divergent, resulting in low utilization of the light source or poor light environment, which affects the sensitivity during shooting. Summary of the invention

[0006] The purpose of the utility model is to solve the above technical problems and provide a high-sensitivity PCBA defect detection visual device.

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] The utility model proposes a high-sensitivity PCBA defect detection visual device, including:

[0009] Base;

[0010] A shield is fixedly mounted on the top of the base;

[0011] The conveyor is fixed in the shield and partially extends outside the shield;

[0012] PCBA board, arranged on the conveyor, is used to convey the PCBA board inside and outside the baffle;

[0013] Industrial camera, fixed in the cover, used to photograph PCBA board;

[0014] The light source is fixed in the shield and is used to provide bright light for the industrial camera that shoots the PCBA board;

[0015] It also includes a reflector, which is fixed in the baffle and surrounds the industrial camera and the light source, so as to focus the light diverged by the light source toward the PCBA board.

[0016] As a preferred technical solution of the utility model, the light source is provided in multiple groups and is evenly arranged around the industrial camera.

[0017] As a preferred technical solution of the present utility model, the light source is an LED lamp.

[0018] As a preferred technical solution of the present invention, the controller is also included and fixedly mounted on the base.

[0019] As a preferred technical solution of the utility model, the diffuse reflection layer is also provided on the inner side of the reflector.

[0020] As a preferred technical solution of the utility model, the utility model further includes a stabilizing component, which is arranged between the reflector and the blocking cover and is used for detachable fixing of the reflector.

[0021] As a preferred technical solution of the utility model, the stabilizing component includes a connecting plate fixed to the reflector, a first magnetic plate fixed to the connecting plate, and a second magnetic plate magnetically fixed to the first magnetic plate, and the outer side of the second magnetic plate is fixedly connected to the inside of the shield.

[0022] The beneficial effects of the utility model are as follows:

[0023] By fixing the reflector 7 in the baffle 2, the industrial camera 5 and the light source 6 are covered therein, and the light emitted by the light source 6 is irradiated into the reflector 7 for light reflection, so as to gather the light toward the PCBA board 4, increase the utilization of the light source and improve the overall brightness, so as to enhance the accuracy and sensitivity of the information captured by the industrial camera 5 on the PCBA board. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure numerals: base -1, baffle -2, output machine -3, PCBA board -4, industrial camera -5, light source -6, reflector -7, diffuse reflection layer -8, stabilizing component -9, connecting plate -91, first magnetic plate -92, second magnetic plate -93. DETAILED DESCRIPTION Example 1

[0026] like Figure 1 As shown, this embodiment proposes: a high-sensitivity PCBA defect detection visual device, including;

[0027] Base 1;

[0028] The shield 2 is fixedly mounted on the top of the base 1 (as shown in the figure, the shield 2 is in the shape of a rectangular body with a hollow bottom, and is arranged on the top of the base 1);

[0029] The conveyor 3 is fixed in the baffle 2 and partially passes through the baffle 2 (the conveyor 3 can be a belt conveyor or a chain conveyor, etc.) (as shown in the figure, a part of the left and right ends of the conveyor 3 are outside the baffle 2, and a gap is provided between the top of the conveyor 3 and the baffle 2, and the gap provides space for the subsequent PCBA board 4 to enter and exit);

[0030] The PCBA board 4 is arranged on the conveyor 3 and is used to convey the PCBA board 4 inside and outside the baffle 2 (according to the above, the PCBA board 4 is placed on the top of the conveyor 3, and can enter the baffle 2 through the gap, and then pass through the gap to pass out of the baffle 2);

[0031] The industrial camera 5 is fixedly mounted in the shield 2 and is used to photograph the PCBA board 4 and collect image information of the PCBA board 4;

[0032] The light source 6 is fixed in the shield 2 and is used to provide bright light for the industrial camera 5 for photographing the PCBA board 4; the light source 6 is an LED lamp;

[0033] The light sources 6 are provided in multiple groups and are evenly arranged around the industrial camera 5 (as shown in the figure, the industrial camera 5 is fixedly mounted in the center of the shield 2, and the light sources 6 are arranged around the periphery of the industrial camera 5 and evenly distributed to provide uniformity of the light environment and increase the intensity);

[0034] It also includes a reflector 7, which is fixed in the baffle 2 and surrounds the industrial camera 5 and the light source 6, and is used to gather the light emitted by the light source 6 toward the PCBA board 4 (the reflector 7 can be made of aluminum or the like. As shown in the figure, the reflector 7 gradually expands from top to bottom, so that the light emitted by the light source 6 can be gathered downward to the PCBA board 4);

[0035] According to the above, the light emitted by the light source 6 is irradiated into the reflector 7 for light reflection, so as to gather the light toward the PCBA board 4, increase the utilization of the light source and improve the overall brightness, so as to enhance the accuracy of the information captured by the industrial camera 5 on the PCBA board;

[0036] Among them, the controller 10 (which is a PLC controller, connected to an external power supply to power the electrical components of the high-sensitivity PCBA defect detection visual equipment; combined with the image collected by the above-mentioned industrial camera 5 to process information, is a prior art, including the "image processing software and other core components" mentioned in the background technology) is also included, which is fixed on the base 1. Example 2

[0037] like Figure 1 As shown, the difference from Example 1 is that it also includes a diffuse reflection layer 8 (the diffuse reflection layer 8 can be a matte paint layer, etc.), which is fixed on the inner side of the reflector 7, and can form a microscopic rough surface to increase the diffuse reflection of light (i.e., non-directional reflection), disperse the reflected light, make the reflected light more uniform, and improve the light stability of the shooting environment, so as to further enhance the accuracy and sensitivity of the information captured by the industrial camera 5 on the PCBA board. Example 3

[0038] like Figure 1 As shown, the difference between it and Example 1 or Example 2 is that: it also includes a stabilizing component 9, which is arranged between the reflector 7 and the blocking cover 2, and is used for detachable fixation of the reflector 7 (as shown in the figure, the stabilizing component 9 is arranged at the top of the reflector 7, and is detachably connected to the blocking cover 2 through the stabilizing component 9, which is convenient for replacement, etc.).

[0039] In order to realize the implementation and use of the above-mentioned stabilizing component 9, it is proposed that Figure 1 As shown, the specific structure and composition of the stabilizing component 9 can be as follows: the stabilizing component 9 includes a connecting plate 91 fixed to the reflector 7, and the connecting plate 91 is made of solid material, which can be the same as the reflector 7 and can be formed in one piece;

[0040] A first magnetic plate 92 fixedly mounted on the connecting plate 91 (the first magnetic plate 92 is a plate-shaped magnet fixedly mounted on the connecting plate 91 and can be connected by bonding or the like, and the bonding material can be strong glue or the like);

[0041] The second magnetic plate 93 is magnetically attracted to the first magnetic plate 92 and is fixedly connected to the inside of the baffle 2 from the outside (the first magnetic plate 92 is another plate-shaped magnet and is fixed in the baffle 2, or by bonding or other methods. As shown in the figure, the first magnetic plate 92 is at the top of the first magnetic plate 92, and the magnetic poles of the adjacent surfaces are relatively opposite poles that attract each other, providing a magnetically stable position for the reflector 7, and the disassembly and assembly are easy).

[0042] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0043] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-sensitivity PCBA defect detection visual device, comprising: Base (1); A baffle (2) is fixedly mounted on the top of the base (1); The conveyor (3) is fixedly mounted in the baffle (2) and partially extends out of the baffle (2); A PCBA board (4) is arranged on the conveyor (3) and is used to convey the PCBA board (4) inside and outside the baffle (2); An industrial camera (5) is fixedly mounted in the shield (2) and is used to photograph the PCBA board (4); A light source (6) is fixedly mounted in the shield (2) and is used to provide bright light for an industrial camera (5) for photographing the PCBA board (4); It is characterized in that It also includes a reflector (7) which is fixedly arranged in the baffle (2) and encloses the industrial camera (5) and the light source (6) therein, and is used to gather the light emitted by the light source (6) toward the PCBA board (4).

2. A high-sensitivity PCBA defect detection visual device according to claim 1, characterized in that: The light sources (6) are provided in multiple groups and are evenly arranged around the industrial camera (5).

3. A high-sensitivity PCBA defect detection visual device according to claim 2, characterized in that: The light source (6) is an LED lamp.

4. The high-sensitivity PCBA defect detection visual device according to claim 1, characterized in that: It also includes a controller (10) which is fixedly mounted on the base (1).

5. The high-sensitivity PCBA defect detection visual device according to claim 1, characterized in that: It also includes a diffuse reflection layer (8) which is fixedly arranged on the inner side of the reflector (7).

6. The high-sensitivity PCBA defect detection visual device according to claim 1, characterized in that: It also includes a stabilizing component (9) which is arranged between the reflector (7) and the blocking cover (2) and is used for detachably fixing the reflector (7).

7. A high-sensitivity PCBA defect detection visual device according to claim 6, characterized in that: The stabilizing component (9) comprises a connecting plate (91) fixed to the reflector (7), a first magnetic plate (92) fixed to the connecting plate (91), and a second magnetic plate (93) magnetically attracted and stabilized to the first magnetic plate (92); the outer side of the second magnetic plate (93) is fixedly connected to the inside of the baffle (2).

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