Flexible printed circuit board reinforcement steel piece pasting method

Abstract

The invention discloses a flexible printed circuit board reinforcement steel piece pasting method. A reinforcement steel piece comprises reinforcement steel piece units and a connecting bar. The reinforcement steel piece units and the connecting bar are connected through at least two peak angles. The sharp points of the peak angles are connected with one side of each reinforcement steel piece unit. Steel piece positioning holes are respectively arranged on both ends of the connecting bar. Substrate positioning holes are respectively arranged on both ends of a circuit board substrate. The pasting method comprises the steps of gum pasting, steel model notching, steel piece pasting, false pressing, steel piece segmenting, pressing and post curing. The pasting method has the advantages that the whole reinforcement steel piece is pasted; the reinforcement steel piece is split into a number of reinforcement steel piece units through a fixture; the pasting of a number of reinforcement steel pieces is completed at a time; the workload of reinforcement steel piece pasting is reduced; and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to a manufacturing process of a flexible printed circuit board, in particular to a method for pasting reinforcing steel sheets of a flexible printed circuit board. Background technique [0002] Flexible printed circuit board (FPC) has become the fastest growing variety in the printed circuit industry because of its lightness, thinness, small size, flexibility, and three-dimensional wiring. With the rapid development of electronics and electronics industry, there are more and more requirements for miniaturization, light weight, high reliability and simplified assembly process of instruments and equipment. Under some special conditions, traditional hard printed circuit boards are no longer suitable for use and need to be used It is a flexible printed circuit board (FPC) with excellent performance. The flexible printed circuit board (FPC) substrate is made of insulating plastic film and copper foil bonded with adhesive. However, si...

AI Technical Summary

Problems solved by technology

However, since the entire circuit board is made of flexible material, the welding feet of the components will crack because they can be bent after the components are printed. In order to improve the reliability of the circuit board, reinforcing steel sheets will be pasted on the parts where the components are printed to enhance the local strength of the parts.

[0003] The traditional pasting process of reinforcing steel sheets is to paste pure glue→steel die cutting→sticking steel sheets→pressing→post-curing. There are often a dozen or more parts on the circuit board that need to be pasted with reinforcing steel sheets, and the method of manually pasting them one by one is labor-intensive and inefficient

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