Press-fit jig and press-fit method for printed circuit board

Abstract

The invention discloses a press-fit jig and a press-fit method for a printed circuit board. According to the embodiment of the invention, the press-fit jig for a printed circuit board comprises a bottom plate which is used for placing a printed circuit board; and a cover plate which is matched with the bottom plate and is used for covering the printed circuit board. The bottom plate is provided with a first press-fit column located on the bottom plate, and a first spring located on the first press-fit column. The cover plate is provided with a second press-fit column located on the cover plate, and a second spring located on the second press-fit column. The first spring and / or the second spring are / is deformed by locking the bottom plate and the cover plate. The deformed first spring and / or the deformed second spring provide press-fit force for the printed circuit board so as to press the printed circuit board. According to the press-fit jig and the press-fit method for the printed circuit board, spring press fit is adopted, the stress consistency is better, press fit is uniform, the air tightness after press fit is good, the precision is high, and the product yield is high.

Description

technical field [0001] The invention relates to the technical field of micro-electromechanical system manufacturing, in particular to a pressing fixture and a pressing method for printed circuit boards. Background technique [0002] Micro-Electro-Mechanical Systems (MEMS, Micro-Electro-Mechanical System), also known as micro-electro-mechanical systems, micro-systems, micro-machines, etc., refers to high-tech devices with a size of a few millimeters or even smaller. During the manufacturing process of products including MEMS, the pressing of printed circuit boards is often involved. [0003] In the prior art, during the production process of a stacked MEMS microphone with a multi-layer PCB (Printed Circuit Board, printed circuit board), the multi-layer PCB needs to be pressed together. In the existing press-fit operation, several screws around the press-fit fixture act as all the pressure sources, and the PCB board is pressed by the locking screws. Such a design may cause th...

AI Technical Summary

Problems solved by technology

In the existing press-fit operation, several screws around the press-fit fixture act as all the pressure sources, and the PCB board is pressed by the locking screws. Such a design may cause the entire PCB to appear larger in the area where no screws are locked. Unclosed area, poor pressing effect and low yield

In addition, in the existing pressing method, the screws can only be locked one by one, which will cause one end of the pressing fixture to be pressed while the other side is not under force, and the PCB will be unbalanced in pressure, and different PCBs cannot be tightly closed. There will be problems such as pressing deviation and air leakage

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