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Working principle of automatic printing machine

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Working principle of automatic printing machine

Working principle of automatic printing machine

 

1. When the smt printer's squeegee moves forward at a certain speed and angle, it generates a certain pressure on the solder paste, pushing the solder paste to roll in front of the squeegee, generating the pressure required to inject the solder paste into the mesh or leak;

 

2. The viscous friction force of the solder paste causes the solder paste to shear at the junction of the smt printer squeegee and the screen. The shear force reduces the viscosity of the solder paste, which is beneficial to the smooth injection of the solder paste into the template opening or leakage. hole. Squeegee speed, squeegee pressure, angle of squeegee and template, and viscosity of solder paste all have certain restrictions. Therefore, only by controlling these parameters correctly can the printing quality of solder paste be guaranteed;

 

3. When the squeegee moves forward at a certain speed and angle, a certain pressure is generated on the solder paste, which pushes the solder paste to roll in front of the squeegee, and generates the pressure required to inject the solder paste into the mesh (ie the opening of the template). The viscous friction force causes the solder paste to shear at the junction of the squeegee and the stencil (template opening), and the shear force reduces the viscosity of the solder paste, thereby smoothly injecting into the mesh; when the squeegee leaves the template opening, The viscosity of the solder paste quickly returns to its original state.

Pub Time : 2021-08-23 14:18:40 >> News list
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