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Strippable blue glue plug hole jig and method for stripping blue glue plug hole

A blue glue, plug hole technology, applied in electrical components, printed circuits, printed circuit manufacturing, etc., can solve the problems of high cost, low efficiency, cumbersome processing process, etc., achieve smooth surface, stable airflow, prevent pits and holes The effect of glue overflowing the edge of the mouth

Active Publication Date: 2019-09-10
DALIAN CHONGDA CIRCUIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the production board with the through-hole diameter ≥ 4.0mm. When the hole is plugged and printed with peelable blue glue, the existing method has the problems of cumbersome processing flow, low efficiency and high cost. It provides a silk screen printing on the production board. A strippable blue glue plug hole jig used when the blue glue can be stripped, and a method for using the jig to perform strippable blue glue plug holes on a production board

Method used

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  • Strippable blue glue plug hole jig and method for stripping blue glue plug hole
  • Strippable blue glue plug hole jig and method for stripping blue glue plug hole
  • Strippable blue glue plug hole jig and method for stripping blue glue plug hole

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Embodiment 1

[0033] Such as Figure 1-6 As shown, this embodiment provides a peelable blue glue plug hole jig, which includes an air guide plate 10 , an air guide mesh backing plate 20 and a compressed air box 30 stacked in sequence from top to bottom.

[0034] The air guide plate 10 is provided with air guide through holes 11, and the arrangement of the air guide through holes 11 corresponds to the through holes set on the PCB production board 50 to be processed, and the air guide through holes 11 on the air guide plate 10 The diameter of the hole is 2.0 mm larger than the diameter of the corresponding through hole on the PCB production board 50 .

[0035] The air guide mesh backing plate 20 is provided with perforations 21 arranged in a matrix, and the perforations 21 are square perforations with a side length of 50 mm. The line width of the mesh wire 22 forming the square perforation 21 on the air guide mesh backing plate 20 is 3.0mm. The thickness of the air guide mesh backing plate ...

Embodiment 2

[0044]This embodiment provides a peelable blue glue plug hole jig, including air guide plates and compressed air boxes stacked up and down. The structures of the air guide plate and the compressed air box in this embodiment are the same as those of the air guide plate and the compressed air box described in Embodiment 1. Compared with Example 1, the peelable blue glue plug hole jig of this example has no air guide mesh backing plate.

[0045] When using a screen printing machine to screen-print the peelable blue glue on the PCB production board, use the peelable blue glue plug hole jig of this embodiment to assist the silk screen printing, including steps S1-S4.

[0046] Step S1 is as follows: S1. Fix the strippable blue rubber plug hole fixture on the working table of the screen printing machine, that is, stack the compressed air box and the air guide plate on the working table of the screen printing machine in sequence, and use ordinary tape to seal the compressed air box. ...

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Abstract

The invention relates to the technical field of printed circuit boards, in particular to a strippable blue glue plug hole jig and a method for stripping blue glue plug hole. A compressed air box and an air guide plate are arranged, and compressed air is input into the compressed air box, so that air with certain pressure is output from the compressed air box and is led into a through hole of a PCBproduction board through an air guide through hole of the air guide plate; and when the strippable blue glue is subjected to silk-screen printing, the strippable blue glue flowing to a hole in the bottom of the through hole is subjected to upward resistance by compressed air, and the strippable blue glue can be prevented from flowing out of the through hole through balance of gravity and resistance. Meanwhile, an air guide mesh base plate stacked between the air guide plate and the compressed air box is arranged, the air flow which enters the air guide plate can be balanced and stabilized through the air guide mesh base plate, so that the air flow which finally enters each through hole of the PCB production plate is stable, and the surface of the strippable blue glue which is plugged at the hole opening of the through hole is flat.

Description

technical field [0001] The invention relates to the technical field of printed circuit boards, in particular to a strippable blue glue plug hole jig and a strippable blue glue plug hole method. Background technique [0002] The peelable blue glue covering the surface of the object generally plays the role of insulation, moisture-proof and protection. In the PCB field, it is necessary to screen-print peelable blue glue on some production boards during the production process, which mainly plays the following two roles. The peelable blue glue on the finished product can be effectively used in the process of PCB reflow soldering and then wave soldering. Protect the gold fingers on the PCB and prevent the pads that do not require solder from being polluted by solder; print peelable blue glue before the tin spraying process to protect the gold fingers from being polluted during the tin spraying process. [0003] The processing flow and requirements of silk screen peelable blue gl...

Claims

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Application Information

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IPC IPC(8): H05K3/00
CPCH05K3/0094H05K2201/0959
Inventor 陈志强宋清双赵金亮王学伟
Owner DALIAN CHONGDA CIRCUIT
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