Circuit board detection equipment

Abstract

The utility model relates to the technical field of circuit board detection, in particular to circuit board detection equipment, which comprises a forward detection module, and the forward detection module comprises a camera module which comprises a first detection camera and a second detection camera which are arranged at an included angle; the light source module comprises a first light source assembly, a second light source assembly and a third light source assembly which irradiate the to-be-detected circuit board from different angle directions, and illumination light emitted by the third light source assembly irradiates the to-be-detected circuit board after being reflected by the light splitting device; the first detection camera is arranged on a reverse extension line of the third light source assembly reflected by the light splitting device, and the first detection camera collects image information of the circuit board to be detected transmitted by the light splitting device. The second detection camera and the first detection camera are arranged at a certain included angle, and the quality of the circuit board is detected more comprehensively through shooting at different angles.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, and in particular to a circuit board testing device. Background Technology

[0002] As circuit board designs become increasingly complex, their circuit layouts become more intricate, and the integration of components becomes higher. Traditional testing methods often struggle to accurately identify subtle defects such as minute open circuits, short circuits, and hidden defects like poor soldering or missing solder joints in some components. These minor flaws can lead to serious problems such as intermittent malfunctions, performance instability, or even complete failure of electronic devices. Furthermore, existing circuit board testing technologies are relatively unautomated. Most testing processes still rely on manual operation or only partially automate steps, resulting in low efficiency and susceptibility to human error. Utility Model Content

[0003] The purpose of this invention is to address the problem of poor testing performance of existing circuit board testing equipment by providing a circuit board testing device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A circuit board inspection device includes a forward inspection module, the forward inspection module comprising:

[0006] The camera module includes a first detection camera and a second detection camera set at an angle to each other;

[0007] The light source module includes a first light source component, a second light source component, and a third light source component that illuminate the circuit board to be tested from different angles. The illumination light emitted by the third light source component is reflected by a beam splitter and then illuminates the circuit board to be tested. A first detection camera is positioned on the reverse extension line of the third light source component reflected by the beam splitter, and the first detection camera acquires image information of the circuit board to be tested transmitted from the beam splitter.

[0008] Preferably, the first light source component, the second light source component, and the third light source component are all line light sources, and the three line light sources overlap on the circuit board to be tested.

[0009] Preferably, the third light source component illuminates the circuit board to coordinate with the photographing action of the first detection camera, and the first light source component and the second light source component illuminate the circuit board to coordinate with the photographing action of the second detection camera. The first detection camera and the second detection camera are configured to take pictures at preset time intervals.

[0010] Preferably, the shooting direction of the first detection camera is perpendicular to the circuit board to be detected.

[0011] Preferably, both the first light source assembly and the second light source assembly are connected to an angle adjustment mechanism, and the angle between the first light source assembly and the detection surface of the circuit board is smaller than the angle between the second light source assembly and the detection surface of the circuit board.

[0012] Preferably, both the camera module and the light source module are mounted on the mounting base, and the angle adjustment mechanism includes an arc-shaped adjustment groove mounted on the mounting base. The first light source assembly and the second light source assembly are adjustablely connected to the arc-shaped adjustment groove via screws.

[0013] Preferably, both the first and second detection cameras are connected to the mounting base with an adjustment seat. The adjustment seat includes a first adjustment block arranged along the axis of the corresponding detection camera and a second adjustment block perpendicular to the axis. The ends of the first and second adjustment blocks are provided with tightening screws.

[0014] Preferably, the mounting base is connected to a three-axis moving mechanism, which drives the mounting base to move along three axes, and the moving direction of one of the axes is parallel to the circuit board conveying direction.

[0015] Preferably, it also includes a reverse detection module, which includes a fourth light source assembly and a fifth light source assembly located below the circuit board and illuminating the circuit board to be tested from different directions. A third detection camera is provided below the fourth light source assembly and the fifth light source assembly, and the shooting direction of the third detection camera is perpendicular to the circuit board to be tested.

[0016] Preferably, the circuit board forward detection module and the reverse detection module are spaced apart in the circuit board conveying direction.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. The second detection camera is set at a certain angle to the first detection camera. By shooting from different angles, the quality of the circuit board can be detected more comprehensively. The light source module and the camera module work together to quickly acquire multiple angle images of the circuit board under different lighting conditions, thereby improving the detection accuracy.

[0019] 2. The first light source assembly, the second light source assembly, and the third light source assembly are all line light sources. The three line light sources overlap on the circuit board to be tested, which is conducive to time-division strobe, making it easier to present different defects on the product surface and to help the camera capture clear images. Attached Figure Description

[0020] Figure 1 This is a front view of the forward detection module in this embodiment;

[0021] Figure 2 This is a 3D view of the forward detection module in this embodiment;

[0022] Figure 3 This is the circuit board testing equipment used in this embodiment.

[0023] In the diagram, the following labels are used: 1-Camera module, 101-First detection camera, 102-Second detection camera, 2-Light source module, 201-First light source assembly, 202-Second light source assembly, 203-Third light source assembly, 204-Left detection channel, 205-Right detection channel, 3-Spectrometer, 4-Mounting base, 401-Arc-shaped adjustment slot, 5-Adjustment base, 501-Tightening screw, 6-Fourth light source assembly, 7-Fifth light source assembly, 8-Third detection camera. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] like Figure 1-3 As shown, this embodiment of a circuit board testing device includes a forward testing module, which comprises:

[0026] Camera module 1 includes a first inspection camera 101 and a second inspection camera 102 set at an angle. Both cameras can be high-resolution, high-frame-rate industrial cameras, capable of quickly and accurately acquiring image information of the circuit board. The first inspection camera 101 is perpendicular to the circuit board to be inspected, thus obtaining a front view of the circuit board surface, which is crucial for inspecting component layout and solder joint quality. The second inspection camera 102 is set at a certain angle to the first inspection camera 101, for example, between 30° and 60°. By shooting from different angles, the quality of the circuit board can be inspected more comprehensively, such as the side pin conditions of components.

[0027] The first inspection camera 101 and the second inspection camera 102 are both connected to the mounting base 4 by an adjustment seat 5. The adjustment seat 5 includes a first adjustment block arranged along the axis of the corresponding inspection camera and a second adjustment block perpendicular to the axis. The ends of the first adjustment block and the second adjustment block are provided with a tightening screw 501. By adjusting the tightening screw 501, the positions of the first inspection camera 101 and the second inspection camera 102 can be precisely adjusted to meet the inspection requirements of circuit boards of different sizes and types.

[0028] The light source module 2 includes a first light source assembly 201, a second light source assembly 202, and a third light source assembly 203 that illuminate the circuit board to be inspected from different angles. The first and second light source assemblies 201 and 202 are located on opposite sides above the circuit board and are arranged at an angle. The third light source assembly 203, together with the first and second light source assemblies 201 and 202, forms a left detection channel 204 and a right detection channel 205. The second inspection camera 102 performs photographic inspection of the circuit board through the left detection channel 204.

[0029] The first light source assembly 201, the second light source assembly 202, and the third light source assembly 203 are all line light sources. The three line light sources overlap on the circuit board to be tested, which is conducive to time-division strobe, making it easier to present different defects on the product surface and to help the camera capture clear images.

[0030] The third light source assembly 203 illuminates the circuit board to coordinate with the image-taking action of the first detection camera 101. The first light source assembly 201 and the second light source assembly 202 illuminate the circuit board to coordinate with the image-taking action of the second detection camera 102. The first detection camera 101 and the second detection camera 102 are configured to take pictures at preset time intervals, for example, the preset time interval can be between 0.1 seconds and 0.5 seconds. This allows for the rapid acquisition of multiple angle images of the circuit board under different light source illumination, improving detection accuracy.

[0031] Both the first light source assembly 201 and the second light source assembly 202 are connected to an angle adjustment mechanism. The angle between the first light source assembly 201 and the circuit board detection surface is smaller than the angle between the second light source assembly 202 and the circuit board detection surface. Specifically, the angle adjustment mechanism includes an arc-shaped adjustment groove 401 disposed on the mounting base 4. The first light source assembly 201 and the second light source assembly 202 are adjustablely connected to the arc-shaped adjustment groove 401 by screws. By adjusting the position of the screws in the arc-shaped adjustment groove 401, the illumination angle of the first light source assembly 201 and the second light source assembly 202 can be easily adjusted to achieve the best lighting effect.

[0032] The illumination light emitted by the third light source assembly 203 is reflected by the beam splitter 3 and then illuminates the circuit board to be tested. The first detection camera 101 is positioned on the reverse extension line of the third light source assembly 203 reflected by the beam splitter 3. The first detection camera 101 acquires image information of the circuit board to be tested transmitted from the beam splitter 3. The beam splitter 3 can use high-precision optical lenses to effectively split the light from the third light source assembly 203, meeting the imaging requirements of the first detection camera 101.

[0033] Both camera module 1 and light source module 2 are mounted on mounting base 4. Mounting base 4 is connected to a three-axis moving mechanism, which drives mounting base 4 to move along three axes, with one axis moving parallel to the circuit board conveying direction. The three-axis moving mechanism can employ high-precision linear guides and a motor drive system, enabling precise movement of mounting base 4 in the X, Y, and Z directions, with a movement accuracy of, for example, between 0.01mm and 0.1mm. Through the three-axis moving mechanism, the positions of camera module 1 and light source module 2 can be flexibly adjusted, improving the comprehensiveness and accuracy of the detection.

[0034] The circuit board inspection equipment in this embodiment also includes a reverse inspection module, which includes a fourth light source assembly 6 and a fifth light source assembly 7 located below the circuit board and illuminating the circuit board to be inspected from different directions. A third inspection camera 8 is located below the fourth light source assembly 6 and the fifth light source assembly 7, and the shooting direction of the third inspection camera 8 is perpendicular to the circuit board to be inspected. The fourth light source assembly 6 and the fifth light source assembly 7 can also be line light sources. The third inspection camera 8 can acquire image information of the back of the circuit board and detect whether there are defects in the solder joints, circuits, etc. on the back of the circuit board.

[0035] The circuit board forward detection module and reverse detection module are spaced apart in the circuit board conveying direction. This allows for efficient and accurate detection of the front and back sides of the circuit board as it passes through the forward and reverse detection modules in sequence, thereby improving the detection efficiency and reliability of the entire detection equipment.

[0036] Through the above specific embodiments, the circuit board testing equipment of the present invention can effectively perform all-round, high-precision testing on circuit boards.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circuit board inspection apparatus characterized by comprising: The positive detection module comprises: The camera module (1) comprises a first detection camera (101) and a second detection camera (102) arranged at an included angle; the light source module (2) comprises a first light source assembly (201), a second light source assembly (202) and a third light source assembly (203) for irradiating the circuit board to be detected from different angle directions, wherein the illumination light emitted by the third light source assembly (203) is reflected by the light splitting device (3) and then irradiates the circuit board to be detected, the first detection camera (101) is arranged on the reverse extension line of the third light source assembly (203) reflected by the light splitting device (3), and the first detection camera (101) collects the image information of the circuit board to be detected transmitted by the light splitting device (3).

2. The circuit board inspection apparatus according to claim 1, characterized by The first light source assembly (201), the second light source assembly (202) and the third light source assembly (203) are all linear light sources, and the three linear light sources coincide on the circuit board to be detected.

3. The circuit board inspection apparatus according to claim 1, characterized by The third light source assembly (203) illuminates the circuit board to cooperate with the photographing action of the first detection camera (101), and the first light source assembly (201) and the second light source assembly (202) illuminate the circuit board to cooperate with the photographing action of the second detection camera (102), and the first detection camera (101) and the second detection camera (102) are configured to be photographed at a preset time interval.

4. The circuit board inspection apparatus according to claim 1, characterized by The photographing direction of the first detection camera (101) is perpendicular to the circuit board to be detected.

5. The circuit board inspection apparatus according to claim 1, characterized by The first light source assembly (201) and the second light source assembly (202) are both connected with an angle adjusting mechanism, the included angle between the first light source assembly (201) and the detection surface of the circuit board is smaller than the included angle between the second light source assembly (202) and the detection surface of the circuit board.

6. The circuit board inspection apparatus according to claim 5, characterized by The camera module (1) and the light source module (2) are both arranged on a mounting seat (4), the angle adjusting mechanism comprises an arc-shaped adjusting groove (401) arranged on the mounting seat (4), and the first light source assembly (201) and the second light source assembly (202) are adjustably connected with the arc-shaped adjusting groove (401) through screws.

7. The circuit board inspection apparatus according to claim 6, characterized by The first detection camera (101) and the second detection camera (102) are both connected with an adjusting seat (5) of the mounting seat (4), the adjusting seat (5) comprises a first adjusting block arranged along the axis of the detection camera and a second adjusting block perpendicular to the axis direction, and top tightening screws (501) are arranged at the ends of the first adjusting block and the second adjusting block.

8. The circuit board inspection apparatus according to claim 6, characterized by The mounting seat (4) is connected with a three-axis moving mechanism, the three-axis moving mechanism is used for driving the mounting seat (4) to move along three axes, and the moving direction of one axis is parallel to the conveying direction of the circuit board.

9. The circuit board inspection apparatus according to any one of claims 1 to 8, characterized by The reverse detection module comprises a fourth light source assembly (6) and a fifth light source assembly (7) for irradiating the circuit board to be detected from different directions below the circuit board, and a third detection camera (8) is arranged below the fourth light source assembly (6) and the fifth light source assembly (7), and the photographing direction of the third detection camera (8) is perpendicular to the circuit board to be detected.

10. The circuit board inspection apparatus according to claim 9, characterized by The forward detection module and the reverse detection module are arranged at intervals in the direction of the circuit board conveying.

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