Automatic optical detection equipment

Abstract

The invention discloses an automatic optical detection equipment which comprises a camera (1), four light sources surrounding the camera (1), a bearing platform (8) below the camera (1) and the light sources, and a computer used for conducting image contrast, wherein the four light sources are annular and are respectively a white annular light source (2), a red annular light source (3), a green annular light source (4) and a blue annular light source (5) which are arranged sequentially from top to bottom; the incident angle of each annular light source is greater than that of the upper adjacent annular light source and smaller than that of the lower adjacent annular light source; and the red annular light source (3) consists of one hundred and seventy light-emitting diodes, and the white annular light source (2) consists of thirty light-emitting diodes. The automatic optical detection equipment has the benefits of high judging accuracy on soldering spots and uneasy misjudgement.

Description

technical field [0001] The invention relates to an optical automatic detection device, in particular to an optical automatic detection device for detecting solder joints. Background technique [0002] The final process of soldering is inspection. Due to the defects of soldering joints, the solder joints need to be inspected after the production is completed. There are roughly two types of welding inspections: one is pre-welding inspection, that is, checking the surface of the base metal, solder , flux, etc. meet the appropriate welding conditions; the second is post-welding inspection, that is, checking whether the welding is reliable and whether there are welding defects. Post-welding inspection can not only find all defects through strict inspection to ensure the quality of shipped products, but also find large quantities of defective products in time to prevent subsequent defective products from continuing to occur. The most important thing is the analysis of defective pr...

AI Technical Summary

Problems solved by technology

One method of visual inspection is to rely on the inspector to use the visual method to inspect, which is a waste of time and manpower. The other is to use optical automatic inspection equipment to capture images of solder joints, identify and compare the images of solder joints with features Compare the images to judge whether the solder joints are good or bad

[0004] Under the existing technology, optical automatic inspection equipment has the problem of inaccurate judgment of solder joints. For normal solder joints, it is often misjudged as over-welded or under-welded; for over-welded or under-welded solder joints, it is often judged as normal solder joints , resulting in product short circuit or open circuit, unable to achieve normal functions, wrongly judged defective products put into subsequent production not only affects the yield rate of subsequent processes, but also products with less soldering often cause finished product defects to be unable to be detected in time, and the quality of finished products is unstable, affecting the company Goodwill

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