Screen printing machine installation and maintenance

Screen printing machine installation and maintenance

Phase adjustment of the working cycle of the whole machine: Strictly adjusted by the manufacturer according to the designed cycle phase diagram, and pinned or locked.
Operation adjustments:
Adjustment of the parallelism between the guide rail, printing plate and working platform: 一般的に, the guide rail or platform is used as the basis for adjustment.
① The platform and the guide rail should be parallel, and the scraper moves along the guide rail. If they are not parallel, the scraper will not always contact the platform with a certain pressure, or even a gap will appear. This adjustment has been adjusted before the machine leaves the factory. .
② The screen printing plate and the platform should be parallel, otherwise the screen distance (the distance from the bottom of the screen printing plate to the printing surface) is inconsistent, causing inconsistent printing pressure and screen printing plate deformation. そこで, the flatness of the screen frame itself should be guaranteed. 一般的に, users put forward specific requirements according to their needs.
Plate adjustment: refers to the adjustment of the printing accuracy between the screen printing plate and the printed parts on the screen printing machine. Height adjustment (>40ミリメートル), front and rear adjustment and left and right adjustment (>20ミリメートル), horizontal angle adjustment (>3°).

Screen printing types

Squeegee adjustment:
① To adjust the parallelism of the squeegee to the platform, adjust the left and right screw rods to adjust the height of the squeegee; the left and right top screws with adjustable top screws on the left and right sides of the middle shaft essentially adjust the height and position of the left and right sides of the ink plate respectively.
② The adjustment amount of the scraper inclination angle is generally in the range of 65° to 85°, which can be selected according to needs.
③The adjustment of printing pressure is actually the adjustment of the high and low position of the squeegee.
④The length of the squeegee cannot be adjusted and is generally supplied in sets. Each set has several different lengths to choose from.
Stroke adjustment: including adjustment of stroke size and stroke position. Stroke adjustment is achieved by adjusting the hole position of the crank and swing rod radius R. As R increases, the stroke increases, and the stroke length generally exceeds the pattern by 20 宛先 50 ミリメートル.
Net (stage) distance adjustment: The net (stage) distance can be adjusted by lowering the screen printing plate or raising the platform. 一般的に, the method of raising the platform is used. The distance between the four corners of the screen printing plate must be consistent, with an error of ≤0.5mm. The net distance is generally 2 宛先 5 ミリメートル. The net distance is allowed to be larger in the front and smaller in the back only when there is a compensation action for lifting the net.
Adjust the squeegee speed: if it is fast, all movements must be fast; if it is slow, all movements must be slow.

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