Circuit board first inspection and reinspection integrated camera module

Abstract

The utility model discloses an integrated camera module for primary inspection and reinspection of a circuit board, which relates to the technical field of circuit board inspection equipment and comprises a support provided with a mounting frame, a primary inspection camera, a reinspection camera, a lighting mechanism and an adjusting mechanism. According to the utility model, the image of the circuit board is acquired by the first inspection camera, whether the circuit board has defects or not is judged by comparing and analyzing the image processing algorithm and the preset standard image, and then the image is acquired again by the reinspection camera, and manual inspection is carried out to judge whether the circuit board has defects or not. Therefore, primary inspection and reinspection of the materials are completed at a time, independent reinspection is not needed, the material transferring process is omitted, the reinspection efficiency is improved, and the probability that the materials are collided and damaged due to carrying is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board detection equipment technical field, concretely is a circuit board first inspection, reinspection integrated camera module. BACKGROUND

[0002] Printed circuit board (PCB) as the key basic component of various electronic equipment, its quality plays a decisive role to the performance and reliability of the whole electronic equipment. Therefore, in the production process of circuit board, strict quality detection link is indispensable. At present, the detection technology for circuit board is various, and the common ones include artificial visual inspection, automatic optical inspection (AOI), automatic X-ray detection (AXI) and the like.

[0003] The automatic optical inspection (AOI) technology is to collect the image of the circuit board by using the optical imaging system, and then compare and analyze the image processing algorithm with the preset standard image to judge whether the circuit board has defects. The AOI technology overcomes some shortcomings of the artificial visual inspection to a certain extent, has high detection precision and efficiency, and can detect various appearance and part of hidden defects. However, the AOI equipment also has limitations in practical application, for example, for some complex multilayer circuit boards, since the inner layer circuit is covered by the outer layer, it is sometimes difficult to fully and accurately obtain the true situation of the inner layer circuit through optical imaging; and in the detection process, there may be misjudgment or omission due to factors such as lighting conditions, image acquisition angle, algorithm adaptability, and further review is still needed to ensure the accuracy of the detection result. In view of the limitations of the above detection technologies, in the actual process of circuit board production, the circuit boards after the initial detection often need to be rechecked to further improve the accuracy of the detection result and reduce the risk of defective products.

[0004] The rechecking of the circuit board is generally carried out by the rechecking equipment, which leads to the need to transfer the material after the first inspection to the rechecking equipment, and the efficiency is low; when the material is large, the transfer is inconvenient, and there is a risk of material knocking off during the transfer process.

[0005] Therefore, there is an urgent need for a circuit board first inspection and reinspection integrated camera module. UTILITY MODEL CONTENT

[0006] In view of the problems in the prior art, the utility model solves the problems by the following technical structure.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A circuit board first inspection and reinspection integrated camera module comprises a support, the support is provided with a mounting frame, a first inspection camera, a reinspection camera, a lighting mechanism and an adjusting mechanism.

[0009] Both the initial inspection camera and the re-inspection camera are mounted on the mounting bracket;

[0010] The adjustment mechanism is used to adjust the position of the mounting bracket in order to adjust the positions of the first inspection camera and the second inspection camera;

[0011] The polishing mechanism is used to polish the material.

[0012] Its further feature is that,

[0013] The adjustment mechanism includes a height adjustment linear module and a horizontal adjustment linear module. The height adjustment linear module is used to adjust the height of the mounting frame, and the horizontal adjustment linear module is used to adjust the horizontal position of the mounting frame.

[0014] The height adjustment linear module includes a first guide rail, a motor, a lead screw, and a carrier plate. The first guide rail is vertically mounted on a bracket, the carrier plate is slidably mounted on the first guide rail, the lead screw is rotatably mounted on the first guide rail, the axial direction of the lead screw is consistent with the extension direction of the first guide rail, the motor is used to drive the lead screw to rotate, and the carrier plate is sleeved on the lead screw and threadedly connected to the lead screw.

[0015] The mounting bracket is mounted on the carrier plate.

[0016] The lighting mechanism includes a connecting frame and two strip light sources. The connecting frame is mounted on a support, and the two strip light sources are horizontally mounted on the connecting frame.

[0017] Two connecting frames are provided, and the two connecting frames are respectively located at both ends of the strip light source.

[0018] The connecting frame is provided with two first strip-shaped holes extending in the horizontal direction. Both ends of the strip light source are provided with positioning bolts, which are respectively inserted into the corresponding first strip-shaped holes.

[0019] The connecting frame is provided with a second strip-shaped hole extending in the vertical direction, and the connecting frame is slidably mounted on the bracket through the second strip-shaped hole.

[0020] The mounting bracket is vertically provided with a second guide rail, and the re-inspection camera is slidably mounted on the second guide rail.

[0021] A ring light source is provided at the bottom of the second guide rail, and the ring light source is located directly below the re-inspection camera.

[0022] The second guide rail is equipped with fixing brackets on both sides.

[0023] The above-described structure of this utility model can achieve the following beneficial effects:

[0024] In use, the application is located directly above the material conveying platform, the lenses of the first inspection camera and the re-inspection camera are directed downward, the position of the mounting frame is adjusted through the adjusting mechanism so that the first inspection camera and the re-inspection camera are in the appropriate position, in detection, the material passes through the bottom of the first inspection camera and the re-inspection camera in turn, the material is lighted through the lighting mechanism, the image of the circuit board is collected by the first inspection camera, then the image processing algorithm is used to compare and analyze the collected image with the preset standard image to determine whether the circuit board has defects, then the image of the circuit board is collected again by the re-inspection camera for manual inspection to determine whether the circuit board has defects, so that the first inspection and re-inspection of the material are completed at one time without separate re-inspection, not only the process of material transfer is saved, but also the re-inspection efficiency is improved, and the situation that the material is damaged due to bumping during transportation is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the application;

[0026] Figure 2 It is a structural schematic diagram of part of the mechanism in the application;

[0027] Figure 3 It is a structural schematic diagram of the support and the height adjustment linear module in the application;

[0028] Figure 4 It is a structural schematic diagram of the lighting mechanism in the application;

[0029] Figure 5 It is a structural schematic diagram of the re-inspection camera in the application.

[0030] In the figure: 1, support; 2, mounting frame; 3, first inspection camera; 4, re-inspection camera; 5, lighting mechanism; 51, connecting frame; 52, light source; 53, first slot; 54, positioning bolt; 55, second slot; 6, height adjustment linear module; 61, first guide rail; 62, motor; 63, screw rod; 64, carrier plate; 7, horizontal adjustment linear module; 8, second guide rail; 81, fixed frame; 9, ring light source. DETAILED DESCRIPTION

[0031] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0032] It is to be understood that the terms "including", "comprising", "having" and "with" used in the specification and the claims herein, as well as corresponding expressions, are intended to be inclusive or open-ended and not restrictive; the description herein of any steps, units, processes, methods, products or apparatus does not preclude the presence or addition of one or more other steps, units, processes, methods, products or apparatus, as well as concomitant use thereof.

[0033] The application will be further described in conjunction with the accompanying drawings. Figures 1-5 The application will be further described in conjunction with the accompanying drawings.

[0034] Reference Figures 1-3 The circuit board first inspection and re-inspection integrated camera module shown in the figure comprises: a support 1, the support 1 is provided with a mounting rack 2, a first inspection camera 3, a re-inspection camera 4, a lighting mechanism 5 and an adjusting mechanism; the first inspection camera 3 and the re-inspection camera 4 are both arranged on the mounting rack 2; in this way, when in use, the application is arranged directly above a material conveying platform, the lenses of the first inspection camera 3 and the re-inspection camera 4 are directed downward, the position of the mounting rack 2 is adjusted by the adjusting mechanism, so that the first inspection camera 3 and the re-inspection camera 4 are in the appropriate position, when detecting, the material passes through the bottom of the first inspection camera 3 and the re-inspection camera 4 in sequence, the material is lighted by the lighting mechanism 5, the image of the circuit board is collected by the first inspection camera 3, then the image is collected again by the re-inspection camera 4, manual inspection is carried out, whether the circuit board has defects is judged, so that the first inspection and re-inspection of the material are completed at one time, re-inspection is not needed separately, not only the process of material transfer is saved, but also the re-inspection efficiency is improved, and the situation that the material is damaged due to bumping during material transfer is avoided.

[0035] As Figures 1-3As shown, the adjusting mechanism includes a height adjusting linear module 6 and a horizontal adjusting linear module 7, the height of the mounting rack 2 is adjusted by the height adjusting linear module 6, and the horizontal position of the mounting rack 2 is adjusted by the horizontal adjusting linear module 7, so as to adapt to the detection of products of different specifications, wherein the height adjusting linear module 6 specifically includes a first guide rail 61, a motor 62, a lead screw 63 and a carrier plate 64, the first guide rail 61 is vertically arranged on the support 1, the carrier plate 64 is slidingly arranged on the first guide rail 61, the lead screw 63 is rotationally arranged on the first guide rail 61, the axial direction of the lead screw 63 is consistent with the extension direction of the first guide rail 61, the motor 62 is used to drive the lead screw 63 to rotate, the carrier plate 64 is sleeved on the lead screw 63 and is threadedly connected with the lead screw 63; the mounting rack 2 is arranged on the carrier plate 64, in this way, the motor 62 drives the lead screw 63 to rotate, so that the carrier plate 64 moves along the axial direction of the lead screw 63, the height of the mounting rack 2 is adjusted, and the height of the first inspection camera 3 and the re-inspection camera 4 is adjusted.

[0036] As shown in Figure 4 The lighting mechanism 5 specifically includes a connecting frame 51 and two strip-shaped light sources 52, the connecting frame 51 is arranged on the support 1, and the two strip-shaped light sources 52 are horizontally arranged on the connecting frame 51, the two horizontally arranged strip-shaped light sources 52 are used to light the materials passing below, so that the first inspection camera 3 can collect clearer images.

[0037] Further optimization is that, as shown in Figure 4 In order to improve the stability of the installation of the strip-shaped light source 52, two connecting frames 51 are arranged, and the two connecting frames 51 are arranged at the two ends of the strip-shaped light source 52 respectively; due to different sizes of materials or different detection requirements, in order to facilitate the adjustment of the positions and angles of the two strip-shaped light sources 52, the connecting frame 51 is provided with two first strip-shaped holes 53 extending in the horizontal direction, the two ends of the strip-shaped light source 52 are provided with positioning bolts 54, the positioning bolts 54 are respectively arranged in the corresponding first strip-shaped holes 53, in this way, the horizontal positions of the two strip-shaped light sources 52 are adjusted by sliding the positioning bolts 54 at the two ends of the strip-shaped light source 52 in the corresponding first strip-shaped holes 53, and the strip-shaped light source 52 can also rotate around the positioning bolts 54, so as to adjust the lighting direction to adapt to different lighting requirements; and the connecting frame 51 is provided with a second strip-shaped hole 55 extending in the vertical direction, the connecting frame 51 is slidingly arranged on the support 1 through the second strip-shaped hole 55, during processing, the connecting frame 51 can be fixed on the support 1 by arranging bolts in the second strip-shaped hole 55, and the two strip-shaped light sources 52 can be synchronously adjusted in height by arranging the bolts in different positions of the second strip-shaped hole 55.

[0038] As shown in Figure 5As shown, in order to facilitate the individual adjustment of the review camera 4, a second guide rail 8 is vertically arranged on the mounting frame 2, and the review camera 4 is slidingly arranged on the second guide rail 8, so that the height of the review camera 4 can be individually adjusted, so that the application can adapt to more diverse detection requirements; At the same time, a ring light source 9 is arranged at the bottom of the second guide rail 8, and the ring light source 9 is arranged directly below the review camera 4, which provides lighting for the image acquisition of the review camera 4, and according to the needs, auxiliary equipment such as laser positioning lamp, code reader and the like can be arranged on the fixed frame 81 on both sides of the second guide rail 8.

[0039] The working principle of the utility model: in use, the application is located directly above the material conveying platform, the lenses of the first inspection camera 3 and the review camera 4 face downward, the position of the mounting frame 2 is adjusted through the adjusting mechanism, so that the first inspection camera 3 and the review camera 4 are in the appropriate position, when detecting, the material passes through the bottom of the first inspection camera 3 and the review camera 4 in turn, the material is lighted through the lighting mechanism 5, the image of the circuit board is collected by the first inspection camera 3, then the image processing algorithm is compared with the preset standard image to judge whether the circuit board has defects, then the image is collected again by the review camera 4, manual inspection is carried out, whether the circuit board has defects is judged, so that the first inspection and review of the material are completed at one time, and the review is not necessary alone, not only the process of material transfer is saved, but also the review efficiency is improved, and the situation that the material is damaged due to handling is avoided.

[0040] The above is only the preferred embodiment of the application, and the utility model is not limited to the above embodiments. It can be understood that other improvements and changes directly derived or thought by those skilled in the art without departing from the spirit and concept of the utility model should be considered to be included in the protection scope of the utility model.

Claims

1. A camera module integrating first-pass inspection and re-inspection of circuit boards, characterized in that, The utility model relates to a kind of first inspection camera and reinspection camera for material, including: Support (1), which is provided with a mounting rack (2), a first inspection camera (3), a reinspection camera (4), a lighting mechanism (5) and an adjusting mechanism; The first inspection camera (3) and the reinspection camera (4) are both arranged on the mounting rack (2); The adjusting mechanism is used to adjust the position of the mounting rack (2) to adjust the position of the first inspection camera (3) and the reinspection camera (4); The lighting mechanism (5) is used to light the material.

2. The camera module according to claim 1, wherein: The adjusting mechanism includes a height-adjusting linear module (6) and a horizontal-adjusting linear module (7). The height-adjusting linear module (6) is used to adjust the height of the mounting rack (2), and the horizontal-adjusting linear module (7) is used to adjust the horizontal position of the mounting rack (2).

3. The camera module according to claim 2, wherein: The height-adjusting linear module (6) includes a first guide rail (61), a motor (62), a lead screw (63) and a carrier plate (64). The first guide rail (61) is vertically arranged on the support (1). The carrier plate (64) is slidingly arranged on the first guide rail (61). The lead screw (63) is rotationally arranged on the first guide rail (61). The axial direction of the lead screw (63) is consistent with the extension direction of the first guide rail (61). The motor (62) is used to drive the lead screw (63) to rotate. The carrier plate (64) is sleeved on the lead screw (63) and is threadedly connected with the lead screw (63). The mounting rack (2) is arranged on the carrier plate (64).

4. The camera module according to claim 3, wherein: The lighting mechanism (5) includes a connecting rack (51) and two strip-shaped light sources (52). The connecting rack (51) is arranged on the support (1). The two strip-shaped light sources (52) are horizontally arranged on the connecting rack (51).

5. The camera module according to claim 4, wherein: The connecting rack (51) is provided with two first strip-shaped holes (53) extending in the horizontal direction. The two ends of the strip-shaped light source (52) are both provided with a positioning bolt (54). The positioning bolt (54) is respectively arranged in the corresponding first strip-shaped hole (53).

6. The camera module according to claim 5, wherein: The connecting rack (51) is provided with a second strip-shaped hole (55) extending in the vertical direction. The connecting rack (51) is slidingly arranged on the support (1) through the second strip-shaped hole (55).

7. The camera module according to claim 4, wherein: the camera module is a camera module for a mobile phone. The mounting rack (2) is vertically provided with a second guide rail (8). The reinspection camera (4) is slidingly arranged on the second guide rail (8).

8. The camera module according to claim 1, wherein: The bottom of the second guide rail (8) is provided with a ring-shaped light source (9), which is arranged directly below the reinspection camera (4).

9. The camera module according to claim 8, wherein: The two sides of the second guide rail (8) are both provided with a fixing rack (81).

10. The camera module according to claim 8, wherein: ​

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