Digital twin driven intelligent manufacturing for FPCB etching production line

Flexible printed circuit board (FPCB) exhibits high wiring density and good bendability to be widely used in smart devices. Traditional FPCB etching production lines are mostly discrete manufacturing workshops, which need to be upgraded with intelligence to meet the production requirements of high precision, production efficiency, and product yield. As an emerging technology, the digital twin can achieve the interoperability between physical and digital worlds of manufacturing systems. In this study, a digital twin driven FPCB etching intelligent production line is design. Data service system obtains comprehensive data from the production line in real time and provides intelligent data services. Real time mapping and online control system accomplishes the real time mapping and closed-loop control of intelligent production line. Key process databases are established to obtain optimal process parameters by analyzing the key processes of FPCB etching intelligent production line. The result shows that the process parameters of production line can be updated and adjusted accurately in real time to ensure good consistency and reliability of products. Currently, the FPCB etching intelligent production line can achieve the line forming at the minimum 16 μm line pitch and significantly improve the product yield.