SMT visual detection





Application scheme of post-print inspection

With the development of higher density, smaller size, and more complex PCB hybrid technology for electronic assembly, visual inspection of printed quality has become a thing of the past.Although the process equipment is more advanced, strict quality control of PCB is still emphasized, because 70% of the defects generated in the electronic assembly process are caused by solder paste printing, especially when the thin spacing of components is deposited.In addition, in the deposition of solder paste in the process of printing, solder too much or too little and other defects will bring the subsequent process (component mount) bridge, short circuit and tombstone phenomenon, so that the final product quality and reliability can not be guaranteed, for this reason, people pay more and more attention to the paste after printing detection

Post-patch detection application scheme

Because of the miniaturization of components, it is very difficult to repair the defects of micro - miniature components after welding.Therefore, the pre-furnace AOI will become more and more important. The pre-furnace AOI can detect the defects of the patch process, such as offset, wrong, missing, multiple and reversed polarity.AOI in front of the furnace, high speed, high precision, high repeatability and low error rate.At the same time, it can also share data information with the feeding system, only detect the wrong parts of the refueling element during the refueling period, reduce the system false positives, in addition, it can also send the component offset information to the SMT programming system, and instantly correct the SMT machine program.

Post-plug-in detection scheme

Electronic plug-in manufacturing technology is very strict on the quality of products, for up to hundreds or even thousands of electronic plug-in manufacturing process every minute, even a 1% higher product qualification rate means huge economic benefits.However, most of the plug-in production lines are still in the labor-intensive mode of production, including some sophisticated military or foreign enterprises.Product quality inspection process in the manufacturing process is mainly dependent on the completion of work inspection.The labor intensity, high cost and low efficiency of manual testing have seriously restricted the modernization process of enterprises to improve product quality, reduce production costs and enhance market competitiveness.And machine vision detection technology is an effective countermeasure to solve this thorny problem.

Quality control scheme after wave soldering

Because of the characteristic of the wave soldering process, in this process is the most likely to produce adverse, short circuit, such as pin virtual welding, welding leakage, bract welding, etc., and with the PCB assembly process is more and more miniaturization, high density, the original manual visual inspection has been completely restricted the production capacity and quality of ascension, professional machine vision is used to replace artificial has higher stability and reliability.

Application scheme after reflow furnace

For SMT production process, with the increasing precision of mounting components, post-furnace AOI has become an indispensable part of SMT production line.The AOI behind the furnace is the final gatekeeper of products, so it is the most widely used AOI at present. It needs to detect PCB defects, component defects and all process defects in the whole production line.


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