Everything You Should Know About Automated Optical Inspection Aoi Machine

By Author: Shenzhen Ektion Technology Co.Ltd.
Total Articles: 4
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The PCB or printed circuit board is equivalent to a CPU in any electronic product and it is vital that it keeps working efficiently. As technology develops, PCBs are becoming smaller, more portable and more complex.

With the emergence of SMT components or surface mount, the average circuit board now has thousands of solder joints and this is where the huge majority of issues start.

With the surge in production volumes, it needs rigorous manual inspection. Engineers would have to analyze every component in detail, ascertaining their alignment and qualifying their solder joints on the board. This would tremendously enhance the hazard of missing any flaws.

On the contrary, the growing demand to manufacture and deliver huge quantities of products to the market is becoming shorter. Original AOI equipment manufacturers require better and more dependable testing and inspection techniques to make sure the quality of their products, and they have to be fast enough not to slow down the production process. This is where the automated optical inspection techniques or AOI come into play.

What exactly is Automatic ...
... optical inspection SMT?

In easy words, Automatic optical inspection SMT is the visual inspection of circuit board at different stages of the PCB manufacturing process, both occupied and bare PCBs with electronic components.

PCB manufacturers carry out a detailed scan of the board with a high-resolution camera to recognize bent or missing components, shorts, soldering flaws and other quality flaws. The system can light up the circuit board with infrared, LED, and fluorescent light to capture various images. There are two main ways to program the AOI system.

If you use a good quality board, the images will form a standard against which all subsequent boards can be collated.

In the following runs, the automated optical inspection AOI machine scans and collates every PCB board image to the gold standard and flags any differences found. Engineers then analyze these differences in magnified views and determine if there are flaws and recognize effective ways to fix them.

The system accepts circuit board data and uses it to create your own profile for a board.

Benefits of AOI

With AOI, it is possible to indicate process problems at various stages of manufacturing, namely:

• Post soldering of SMT components
• Assembly of SMT components
• Applying solder paste
• Bare board fabrication

Feedback from AOI stations at each of the above mentioned stages assists to troubleshoot issues by formulating a fast response to your query.

Detecting flaws at the initial stage in the manufacturing process assists to substantially lessen the cost of subsequent rectifications.

Conclusion

The PCB manufacturing industry uses the most suitable automated inspection techniques for the assembly and production circuit, depending on the intricacy, the necessary inspection speed and production volume. As a thumb rule, enhancing circuit board intricacy, volume, and speed need higher inspection costs.

AOIEKT is one of the best AOI equipment manufacturers, offering Automatic optical inspection SMT, automated optical inspection AOI machine. Contact us today!