How does the automatic solder paste printer work?

1. The PCB is fed into the automatic solder paste printing machine through the automatic board loading machine along the conveyor belt

2. The automatic solder paste printer looks for the main edge of the PCB and locates it

3. The Z-frame moves up to the position of the vacuum plate

4. Add vacuum to fix the PCB in a special position

5. The vision axis (printing machine camera) slowly moves to the first target of the PCB (mark point)

6. The printer camera looks for the mark point (reference point) under the corresponding steel mesh

7. The machine moves the printed stencil to align it with the PCB. The machine can move the stencil in the X and Y axis directions and in the direction of the main shaft.

8. Align the stencil and PCB, the Z-frame will move upward, and the PCB will touch the lower part of the stencil

9. Once moved into place, the squeegee will push the solder paste to roll on the stencil, and print it on the PCB's PAD (pad) position through the holes on the stencil

10. When the printing is completed, the Z-frame moves down to drive the PCB and the stencil to separate

11. The automatic solder paste printer sends the PCB to the next process

12. The automatic solder paste printer then receives the next PCB to be printed

13. Perform the same process on the next PCB, but use the second squeegee to print in the opposite direction.