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The difference between automatic printer and semi-auto stencil printer

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The difference between automatic printer and semi-auto stencil printer
Latest company news about The difference between automatic printer and semi-auto stencil printer

The difference between automatic printer and semi-auto stencil printer

 

In the solder paste printing process, to obtain high-quality printed products, it is necessary to rely on solder paste printers. There are two main types of solder paste printers that we can buy now: fully automatic and semi-automatic. Each type of solder paste printer has its own brand and classification, and different solder paste printers also have different performance levels. Next, let us take a look at the difference between the automatic and semi-automatic solder paste printing machine.

 

Printing is a process based on fluid mechanics. It can be maintained repeatedly and a certain amount of material (solder paste or glue) is coated on the surface of the PCB. Generally speaking, printing is a very simple process. The PCB surface is kept at a certain distance or completely in contact with the steel plate or screen. Under the action of the scraper, the material will flow over the surface of the steel plate or screen and fill up the cuts on it. , So that the material is stuck on the surface of the PCB, and finally the PCB is separated from the screen or steel plate, thereby leaving an image of the material composition on the PCB. In the solder paste printing process, the substrate is placed on the worktable and clamped and positioned by machinery or vacuum.

 

In a manual or semi-automatic solder paste printing machine, the solder paste is manually placed on the steel plate or screen, and the squeegee for printing is at the other end of the template. In the automatic solder paste printing machine, the solder paste is automatically dispensed. Semi-automatic solder paste printer is now the most widely used printing equipment, in fact, it is similar to manual printers, and the main difference from manual printers lies in the development of the print head. The semi-automatic solder paste printer can better control the speed, the pressure of the squeegee and the angle of the squeegee. The semi-automatic solder paste printing machine is much more perfect than the manual printing machine in terms of output and quality. Most electronic product manufacturers on the market now choose automatic or fully automatic solder paste printers to produce SMT products. The main difference between automatic and semi-automatic solder paste printers lies in the positioning of the PCB. The use of a vision system to replace manual positioning can reduce errors.

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Finally, experts remind everyone that whether you are using a fully automatic or semi-automatic solder paste printing machine, you must make it clear that most of the defects in solder printing are not directly related to the printing process. These defects are likely to be generated during the assembly process of the solder paste printer, so it is necessary to re-check whether the PCB is standardized and the template design is reasonable.

 

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Pub Time : 2021-06-03 14:46:35 >> News list
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