Appearance inspection machine for printed circuit board

Abstract

The invention provides a testing machine used for testing the appearance of a printing circuit board, comprising a frame which is provided with a transmission mechanism; the front end of the transmission mechanism is provided with an upper plate mechanism; the transmission mechanism is internally provided with two scanning mechanisms; a panel turnover mechanism is arranged between the two scanning mechanisms; the tail part of the transmission mechanism is butt-jointed with a sorting mechanism; and all mechanisms are controlled by control host machines cooperatively. The testing machine adopts a whole-line digital camera photographing technique to detect the defects on the printing circuit such as foreign matter, exposed copper, supplemented oil, scraping, poor gold-plating, character error, non-uniform green oil, non-uniform welding disc, non-uniform depth of channel, residual copper, omitted printing, developing and the like, automatically feeds and sorts the nondefective and waster, improves the simpleness and reliability of the operation, can observe the defects of the board in real-time by adopting a powerful image processing and analysis software system to provide a plurality of image processing and analysis systems, has quick detection speed, high detection efficiency, safe and reliable equipment, simple operation, is convenient and easy to be learned and meets the man-machine interaction.

Description

technical field [0001] The invention relates to a printed circuit board inspection device, in particular to a printed circuit board appearance inspection machine. Background technique [0002] At present, for the final appearance inspection of printed circuit boards, most manufacturers adopt the method of manual visual inspection, but manual inspection has its own defects, so the final quality control of printed circuit boards is quite difficult. The method not only has the problems of missing detection and slow detection speed, but also shows that it is more and more unsuitable as the circuit miniaturization of printed circuit boards advances. In the industry, there is an increasing expectation for a fast, highly discriminative, and highly automated device for visual inspection of printed circuit boards. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an appearance inspection machine capable of inspecting the a...

AI Technical Summary

Problems solved by technology

[0002] At present, for the final appearance inspection of printed circuit boards, most manufacturers use manual visual inspection, but manual inspection has its own defects, so the final quality control of printed circuit boards is quite difficult. The method not only has the problems of missing detection and slow detection speed, but also shows that it is more and more incompatible with the advancement of the circuit miniaturization of printed circuit boards.

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