High-precision etching production system and method for flexible PCB

Abstract

The invention discloses a high-precision etching production system and method for a flexible PCB. The system comprises a PCB substrate feeding device, a line body conveying device and a finished product discharging device, the line body conveying device is provided with a plurality of etching stations in the line body conveying direction, and a spraying system for independently controlling parameters is disposed above each etching station. The PCB substrate feeding device is used for feeding exposed and developed PCB substrates to the line body conveying device, the PCB substrates pass throughthe three etching stations in sequence through line body conveying, the spraying pressure of the three etching stations is gradually increased, the concentration of etching liquid is gradually reduced, a large amount of etching of metal etching layers on the PCB substrates is completed through different parameters, and basic forming etching and high-precision forming etching are carried out, so that high-precision etching production of the flexible PCB is completed. The system and the method are simple in structure, high in production efficiency, high in etching precision and suitable for mass production of high-precision miniature circuit boards, and the efficiency of an existing production line can be greatly improved by modifying the prior art.

Description

technical field [0001] The invention belongs to the field of optoelectronics, and relates to a PCB manufacturing technology, in particular to a high-precision etching production system and method of a flexible PCB board. Background technique [0002] Flexible PCB is a printed circuit board made of flexible substrates, which has the characteristics of high reliability and excellent flexibility. The production process of flexible PCB is generally: I-type punching→coating→exposure→developing→etching→removing film→tinning→automatic optical inspection→ink printing→slitting→circuit inspection→final cleaning and packaging. Among them, the etching process plays a decisive role in the final quality of PCB products. [0003] At present, flexible PCB has been widely used in terminal consumption fields such as smartphones, automobiles, and wearable devices. With the rapid development of high integration and high precision of internal components such as personal computers and smartphone...

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Problems solved by technology

[0005] The present invention aims at problems such as large amount of side erosion of fine lines, low etching factor, poor microscopic appearance of lines, and low yield of finished products, which are difficult to debug process parameters in the existing fine circuit PCB production process, and proposes a method for reducing It is difficult to debug process parameters, and the etching process method to improve the quality and yield of fine PCB lines

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