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Machine vision inspection equipment and method for PCB circuit welding spots

A technology of machine vision and inspection equipment, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., and can solve problems such as the illusion of qualified solder joints on PCB lines

Pending Publication Date: 2022-04-22
深圳市物新智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The detection of PCB circuit solder joints in the above-mentioned patents and the prior art generally uses the detection of solder joints at different positions on the vertical projection plane. It will cause the illusion that the solder joints of the PCB circuit are qualified

Method used

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  • Machine vision inspection equipment and method for PCB circuit welding spots
  • Machine vision inspection equipment and method for PCB circuit welding spots
  • Machine vision inspection equipment and method for PCB circuit welding spots

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] like figure 1 As shown, a machine vision inspection equipment for PCB circuit solder joints proposed by the present invention includes:

[0059] The adjustment base 400 and the adjustable base 300 for adjusting the inclination of the adjustment base 400. The upper side of the adjustable base 300 is provided with an accommodating groove for the adjustment base 400 to accommodate. When performing a vertical projection of the PCB horizontal state, the adjustable base 300 and the adjustment The seat 400 is at the same level;

[0060] The adjustable base 300 is provided with a casing 100; the adjustable base 300 and the casing 100 constitute the main part of the frame of the inspection equipment.

[0061] The adjustment seat 400 is provided with a PCB positioning seat 700 for positioning the PCB; the PCB positioning seat 700 is provided with a positioning pin for positioning the PCB; the PCB is located in the PCB positioning seat 700 in a horizontal state;

[0062]It also ...

Embodiment 2

[0082] like Figure 12 As shown, the present invention also proposes a machine vision inspection method for PCB circuit solder joints, which utilizes the above-mentioned machine vision inspection equipment for PCB circuit solder joints to obtain PCB preprocessing information of external control terminal equipment, which specifically includes the following steps;

[0083] S100: Obtain multi-angle simulated image information of solder joints after PCB circuit soldering;

[0084] In S100, the multi-angle simulated image information of the solder joints after PCB circuit soldering includes expected PCB circuit solder joint image information, solder joint position information, solder joint saturation information, and projection area information of the solder joints after PCB angle adjustment.

[0085] S200: Obtain the first image of the solder joints of the PCB circuit through an industrial vision camera, and compare the first image with the simulated image;

[0086] This comparis...

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Abstract

The invention relates to the technical field of PCB detection, in particular to a machine vision inspection device and method for PCB circuit welding spots. According to the technical scheme, the device comprises an adjusting seat and an adjustable base for adjusting the inclination angle of the adjusting seat, and a machine shell is arranged on the adjustable base; a PCB positioning seat for positioning a PCB is arranged on the adjusting seat; the machine shell drives the industrial vision camera to move through a transverse driving mechanism to inspect circuit welding spots of the PCB when the inclination angle is not adjusted and the PCB after the inclination angle is adjusted. According to the method, the horizontal state and the inclined state of the PCB are detected and compared with the pre-designed multi-angle simulation image information of the PCB circuit welding spots, so that the situation that the qualified rate of the PCB is misjudged only from the vertical projection plane image of one horizontal PCB is avoided, whether the point positions of the welding spots are correct or not can be judged, and meanwhile whether the saturation degree of the welding spots reaches the standard or not can be judged.

Description

technical field [0001] The invention relates to the technical field of PCB inspection, in particular to a machine vision inspection device and method for solder joints of PCB circuits. Background technique [0002] PCB (Printed Circuit Board), the Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical interconnection of electronic components. Because it is made using electronic printing, it is called a "printed" circuit board. [0003] The detection of PCB circuit solder joints requires manual inspection of the solder joints on the PCB board through the visual inspection equipment of the PCB board to observe the solder joints on the PCB board to determine whether it is qualified or not; [0004] After research on the prior art, the patent with the authorization announcement number CN214794527U discloses a visual inspection equipment for PCB board sold...

Claims

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Application Information

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IPC IPC(8): G01N21/956G01N21/88G01N21/01
CPCG01N21/956G01N21/95607G01N21/8851G01N21/01G01N2021/95646G01N2021/0112G01N2021/8887
Inventor 汤晓华王亚龙
Owner 深圳市物新智能科技有限公司
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