PCB separate aluminum cover hole plugging method

Abstract

The invention discloses a PCB separate aluminum cover hole plugging method, which comprises the following steps of: (1) judging whether separate aluminum cover data needs to be manufactured or not according to different aperture sizes and different hole patterns, and manufacturing a corresponding aluminum cover hole plugging plate if the separate aluminum cover data needs to be manufactured; (2) adding a first aluminum cover hole plugging plate on the conventional hole plugging net for scraping, printing and hole plugging, and rolling to be flat; then, taking out the first aluminum cover hole plugging plate, and adding a second aluminum cover hole plugging plate for scraping, printing and hole plugging and rolling to be flat; if a plurality of aluminum cover hole plugging plates exist, performing the operation in sequence; and (3) after hole plugging is completed, performing normal exposure, development and curing operations, and then manufacturing a finished PCB through molding, surface treatment and functional testing. According to the PCB aluminum cap separating and hole plugging method, the process is simple, the standardization degree is high, the operation time can be shortened by 12-24 hours compared with the operation time of a method for soaking, washing and reworking through one aluminum cap hole plugging plate, and the quality stability is high.

Description

technical field [0001] The invention relates to a method for plugging holes of aluminum cover of PCB, which belongs to the technical field of printed circuit boards. Background technique [0002] Electronic information products are updated quickly, and PCB ink plug holes are easily affected by poor personnel control. Due to the expansion and contraction of the machine, the board, and personnel factors, the uneven penetration of the plug hole of the board due to the abnormality of the machine, board, and personnel in the ink printing plugging process, and the direct upper surface printing will cause yellowing or false leakage of the local plug hole orifice. Copper, even through light, there is a risk of copper leakage at the hole or hole of the plug hole, otherwise the ink accumulation will cause the thickness of the ink and the rejection of the solder line to fall off. After the surface ink is directly processed, the edge of the orifice does not hang the ink. When it is att...

AI Technical Summary

Problems solved by technology

[0002] Electronic information products are updated quickly, and PCB ink plug holes are easily affected by poor personnel control

Due to the expansion and contraction of the machine, the board, and personnel factors, the uneven penetration of the plug hole of the board due to the abnormality of the machine, board, and personnel in the ink printing plugging process, and the direct upper surface printing will cause yellowing or false leakage of the local plug hole orifice. Copper, even light-transmitting, there is a risk of copper leakage in the hole or hole of the plug hole, otherwise the accumulation of ink will cause the thickness of the ink and the resistance of the soldering line to fall off

After the surface ink is directly processed, the edge of the orifice does not hang the ink. When it is attacked by the subsequent (mainly in the process of melting gold and tin), ink separation will occur at the edge of the plug hole, which will lead to poor product functionality. Short circuit, the risk of seepage caused by the rejection of solder wire falling off, so the ink plug hole and insulation performance cannot be realized

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