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Method for printing printed circuit board double sided characters

A technology for printed circuit boards and printing methods, applied in the directions of printing, printing devices, etc., can solve the problems of easy scratching of printed circuit boards, cumbersome operation of workers, high labor intensity, etc., so as to improve labor production efficiency and reduce labor intensity. , the effect of reducing energy consumption

Inactive Publication Date: 2010-03-17
BOMIN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This printing method has many processes, requires two times of baking, consumes a lot of electricity, and the workers are cumbersome to operate, the labor intensity is high, and it is easy to scratch the printed circuit board, and the time required for printing is long and the production efficiency is low. The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) The screen plate is fixed to the rear end of the screen printing machine table and can be moved. Put the printed circuit board with a thickness of 1.2mm to be printed on the screen printing machine table and use positioning nails to position it, then put the screen down and print. After the circuit board is aligned, put the adjusted ink on the screen, the squeegee is at a 70 degree angle to the screen, and the squeegee pressure is 6kg / cm 2 Perform printing, open the screen after printing, and take out the printed circuit board on which one side of the text has been printed;

[0014] (2) There are 4 rectangular copper clad laminates on the other screen printing machine, and they are positioned. The 4 copper clad laminates are enclosed in a box. The size of the box is consistent with the process side of the printed circuit board to be printed. The thickness of the copper plate is 1.5mm, the width is 3cm, and the length is slightly shorter than the printed circuit board to...

Embodiment 2

[0017] (1) The screen plate is clamped on the rear end of the screen printing machine table and can be moved. Put the printed circuit board with a thickness of 1.6mm to be printed on the screen printing machine table and use the positioning nails to position it. Put down the screen and the text to be printed. After the printed circuit board is aligned, put the adjusted ink on the screen, the squeegee is at an angle of 80 degrees with the screen, and the squeegee pressure is 7.5kg / cm 2 Perform printing, open the screen after printing, and take out the printed circuit board on which one side of the text has been printed;

[0018] (2) There are 4 rectangular copper clad laminates on the other screen printing machine, and they are positioned. The 4 copper clad laminates are enclosed in a box, and the size of the box is consistent with the process side of the printed circuit board to be printed. The thickness of the copper plate is 1.8mm, the width is 5cm, and the length is slightly sh...

Embodiment 3

[0021] (1) The screen is fixed and clamped on the rear end of the screen printing machine table and can be moved. Put the 2.5mm thickness of the printed circuit board on the screen printing machine table with positioning nails for positioning, and put the screen down and the printing After the printed circuit board is aligned, put the adjusted ink on the screen, the squeegee is at a 75 degree angle to the screen, and the squeegee pressure is 6.8kg / cm 2 Perform printing, open the screen after printing, and take out the printed circuit board printed on one side;

[0022] (2) The other screen printing machine has 4 copper clad laminates on the table and positioned them. The 4 copper clad laminates are enclosed in a box. The size of the box is consistent with the process edge of the printed circuit board to be printed. The thickness of the copper clad laminate 1.6mm, width 4cm, length is slightly shorter than the printed circuit board to be printed. Four positioning nails are install...

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PUM

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Abstract

The invention relates to a method for printing printed circuit board double sided characters. The technical points include that a printed circuit board printed with characters on one side is turned over to the other side and placed into another screen printer, a location pin is used for location and alignment of a screen printing plate and the printed circuit board, ink is poured onto the screen printing plate, a 70-80 degrees angle is kept between a scraper and the screen printing plate, the pressure of the scraper is 6-7.5kg / cm<2> for printing, thus characters on the other side are printed,the printed circuit board is taken out, standing is carried out for 15-30 minute, the printed circuit board is placed into an oven, heated to 145-160 DEG C and baked for 20-40 minutes, and the printedcircuit board is taken out, thus obtaining the printed circuit board printed with characters on double sides. The invention saves time of standing, baking and cooling to room temperature in first side of the printed circuit board, effectively improves labour productivity, reduces energy consumption and labor intensity of workers and has the characteristics of simple printing process and high production efficiency.

Description

Technical field [0001] The invention relates to a method for printing double-sided characters on a printed circuit board. Background technique [0002] The existing printing method of double-sided text on printed circuit boards is to use thermosetting ink to print on polyester screen. After printing one side of text, let it stand, put it in the oven, heat it and bake it out, and cool it to room temperature. After that, the second side of the text is printed, and the thermosetting ink is also used for printing on a polyester screen, and it is allowed to stand, then put in the oven for the second heating and baking, and then take it out to obtain double-sided text printing. circuit board. This printing method has more processes, requires two baking, more power consumption, cumbersome operation by workers, greater labor intensity, and easy to scratch the printed circuit board, which requires a long time for printing and low production efficiency The problem. Summary of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M1/12
Inventor 邓宏喜韩志伟张维说
Owner BOMIN ELECTRONICS CO LTD
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