English Views: 0 Author: Dongguan Intercontinental Technology Co.,Ltd. Publish Time: 2021-09-22 Origin: www.smtfactory.com
Full-auto SMT Stencil Printer is located in the first process of SMT patch production and is used for printing solder paste or patch glue. The solder paste or patch glue is correctly printed on the pads or corresponding positions of the printed board to prepare for the placement of the components. Here is an introduction to the working principle, structure and printing of the Full-auto SMT Stencil Printer the way.
What is the working principle of Full-auto SMT Stencil Printer?
What is the structure of Full-auto SMT Stencil Printer?
What is the printing method of Full-auto SMT Stencil Printer?
The Full-auto SMT Stencil Printer consists of a template with a window for printing graphics, a squeegee that fills the openings of the template with solder paste, and a printing table that clamps the printed circuit board. The materials used are solder paste and printed circuit boards. When printing, you should first align the template window with the land pattern on the PCB. After positioning, put a sufficient amount of solder paste to print. While applying pressure to the squeegee, move it from left to right to make the solder paste roll. The solder paste is filled into the opening of the template.
The workbench that clamps the PCB substrate, including the worktop, vacuum or edge clamping mechanism, and workbench transmission control mechanism;
The print head system of Full-auto SMT Stencil Printer, including the squeegee, the squeegee fixing mechanism, the transmission control system of the print head, etc.;
Wire mesh or template and its fixing mechanism;
Other options configured to ensure the printing accuracy of the Full-auto SMT Stencil Printer include a vision centering system, a wiper system, and a two-dimensional and three-dimensional measurement system.
In the current Full-auto SMT Stencil Printer printing and coating method, there are two methods, direct printing and non-contact printing. The commonality of these two methods is that their working principle is similar to ink printing, but the main difference lies in the solder printing media of Full-auto SMT Stencil Printer, that is, different media materials are used to process printed graphics. The printing without scratching gap is direct printing, using a metal missing template processed by rigid materials; the printing with scratching gap is non-contact printing, using flexible material screens or metal masks.
