CN213749668U

CN213749668U - Appearance testing device for flexible circuit board

Info

Publication number: CN213749668U
Application number: CN202022887876.6U
Authority: CN
Inventors: 易凯
Original assignee: Fujian Yongsheng Electronics Co ltd
Current assignee: Fujian Yongsheng Electronics Co ltd
Priority date: 2020-12-06
Filing date: 2020-12-06
Publication date: 2021-07-20
Anticipated expiration: 2030-12-06

Abstract

The utility model discloses a flexible circuit board appearance testing device, which comprises a test board, a CCD camera, a computer and a display screen, wherein the CCD camera is positioned above the table board of the test board and is connected with the computer; the computer is connected with the display screen. The annular LED lamp is arranged on the periphery of the CCD camera and is fixedly connected with the CCD camera. The device of the utility model is simple in structure, the fault rate is almost zero, and the maintenance cost is low, and the operation of being convenient for has reduced staff's intensity of labour. The device commonality is strong, need not drop into the frock tool separately, saves a large amount of costs. The detection rate is high, the number of false alarm points is small, and the re-judgment labor cost is greatly saved.

Description

Appearance testing device for flexible circuit board

Technical Field

The utility model relates to a test equipment technical field specifically is a flexible circuit board appearance testing device.

Background

In modern electronic devices and electronic products, a Flexible Printed Circuit (FPC) plays an important role as a carrier for integrating and mounting various electronic components. Printed circuit boards, which are highly reliable and have excellent flexibility, are ubiquitous, readily accessible, and are housed in a wide variety of electronic products. The FPC also has flaws during production, and the product performance is influenced by more or less flaws. FPC appearance defects such as: indentation of gold fingers, foreign matter, oxidation of gold fingers, missing attachment/offset of elements, copper leakage on the board surface, poor dispensing of white oil, and deviation of TH holes may occur. Therefore, appearance inspection is not indispensable.

During the quality Inspection of the FPC, an Automatic optical Inspection apparatus (AOI for short) is usually adopted, and based on an area array and linear array industry and a CCD (Charge-coupled Device) image block continuous scanning mode, an image processing and recognition technology is used to analyze a PCB image, thereby determining whether the PCB is qualified or not and determining the defects. At present, when an image acquired by a flexible circuit board testing device is compared, analyzed and judged with a standard, the error is large. Often rejected products are easily mixed into acceptable products, while acceptable products are defined as rejected, resulting in losses and waste. Meanwhile, the application range of the product is greatly limited. Secondly, the labor intensity of workers is high, the utilization value is low, the structure is complex, the operation is complex and the like.

Disclosure of Invention

An object of the utility model is to provide a flexible circuit board outward appearance testing arrangement has solved the problem that proposes in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flexible circuit board outward appearance testing arrangement, includes testboard, CCD camera, computer and display screen, its characterized in that: the CCD camera is positioned above the table board of the test table and is connected with the computer; the computer is connected with the display screen.

Furthermore, an annular LED lamp is arranged at the periphery of the CCD camera and is fixedly connected with the CCD camera.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the device has the advantages of simple structure, almost zero failure rate, low maintenance cost, convenient operation and reduced labor intensity of workers. 2. The device commonality is strong, need not drop into the frock tool separately, saves a large amount of costs. 3. The detection rate is high, the number of false alarm points is small, and the re-judgment labor cost is greatly saved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a local structure of the present invention.

In the figure, 1-test bench, 2-CCD camera, 3-computer,

4-display screen, 5-annular LED lamp.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a flexible circuit board appearance testing device comprises a testing platform 1, a CCD camera 2, a computer 3 and a display screen 4, wherein the CCD camera 2 is positioned above the table top of the testing platform 1, and the CCD camera 2 is connected with the computer 3; the computer 3 is connected to a display screen 4.

The utility model discloses an improvement lies in: the annular LED lamp 5 is arranged on the periphery of the CCD camera 2 and is fixedly connected with the CCD camera 2. The flexible circuit board to be observed is placed on the table board of the test table 1, light of the annular LED lamp 5 is uniformly irradiated on a piece to be measured in a close range, the CCD camera 2 is lifted to carry out amplification observation, and then the appearance condition of the flexible circuit board to be measured observed by the CCD camera 2 is displayed on the display screen 4.

The process of processing the image of the flexible circuit board to be tested by software in a computer is as follows:

A. inputting an image to be detected into preset artificial intelligence image classification software, and judging whether the image to be detected has defects or not by the artificial intelligence image classification software;

B. if the image to be detected is compared with the standard image and the defect does not exist, qualified information is given;

C. the testing personnel puts the flexible circuit board to be tested into a qualified product;

D. if the image to be detected is compared with the standard image and the defect exists, providing unqualified information and code;

E. the testing personnel puts the flexible circuit board to be tested into a defective product;

F. inputting the image to be detected of the unqualified product into a database;

G. and learning by artificial intelligence image classification software. Specifically, training data are obtained through classified collection according to-be-detected images of unqualified products, and the artificial intelligence image classification software is learned through the collected training data.

It should be noted that the artificial intelligence image classification software may be embodied as CNN and yolo v3 software, and the present invention is not limited to this.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a flexible circuit board outward appearance testing arrangement, includes testboard (1), CCD camera (2), computer (3) and display screen (4), its characterized in that: the CCD camera (2) is positioned above the table top of the test table (1), and the CCD camera (2) is connected with the computer (3); the computer (3) is connected with the display screen (4).

2. The appearance testing device of the flexible circuit board as claimed in claim 1, wherein: the LED lamp is provided with an annular LED lamp (5) which is arranged at the periphery of the CCD camera (2) and is fixedly connected with the CCD camera (2).