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Precautions for operation of solder paste printer

2021-06-08 05:28:17
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Solder paste printing machine is a front-end production equipment in SMT production process. The printing quality of solder paste printing machine is directly related to the production quality of back-end production equipment. Standardized operation is the key to quality assurance. How to standardize operation and what precautions are there.

1、 Precautions for screen cleaning of solder paste printing machine

1. When using alcohol and non-woven fabric to clean the screen of solder paste printing machine, one hand should be on the top of the screen and the other hand should be under the screen at the same time, so that the hand under the screen can provide reverse support to avoid screen deformation;

2. The fine spacing opening position on the screen of the solder paste printing machine is very fragile. Be very careful when cleaning the screen to avoid damaging the opening of the screen;

3. After wiping the screen of the solder paste printer, blow it against the screen with a compressed air gun to volatilize the alcohol remaining on the screen of the solder paste printer, so as not to mix the alcohol with the solder paste and affect the printing performance of the solder paste.

4. After cleaning the screen of solder paste printing machine, check whether the screen is damaged, and fill in the steel screen cleaning record


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2、 Precautions for adding solder paste to solder paste printer

1. When adding solder paste to the solder paste printer, the amount of tin at all parts of the solder paste rolling bar shall be uniform;

2. Proper amount of solder paste should be added, not too much. The diameter of solder paste rolling bar should be between 15mm and 20mm;

3. In the process of screen printing of solder paste printing machine, the solder paste squeezed outside the two sides of the scraper should be regularly sorted out.

4. When the solder paste is placed on the screen of the solder paste printing machine for more than 30 minutes and is not used, the solder paste shall be scooped up with a shovel and stirred before use. If the interval is long, the solder paste shall be put back into the tank and the bottle cap shall be tightly closed, and the solder paste shall be stirred again.

3、 Precautions for man-machine safety when operating solder paste printer

1. Try not to turn on the cover during the operation of the solder paste printing machine, especially when the screen plate is to be wiped immediately after the machine is printed;

2. When blowing the screen board of the solder paste printing machine with an air gun, the operator shall take out the screen board to blow, so as to avoid the tin powder falling into the machine and causing circuit or other problems;

3. When leveling the solder paste printer, clean the screen and scraper, and don't stick the solder paste on the tactile sensor.

Improper operation of the solder paste printer will affect the solder paste printing quality, so the operator must be familiar with the precautions for the operation of the solder paste printer to ensure the production quality.