PCB News - What are the benefits of manual panel assembly before PCB and SMT?

What are the benefits of manual panel assembly before PCB and SMT?

Yin Yang board, the clever Taiwan PCBA processing factory has come up with a compromise alternative to overcome the shortcomings and limitations of some Yin Yang board. It is worthy of being a world-class manufacturing expert. In order to reduce the loss of X-board caused by multiple panels, you can also take into account the long-term SMT advantages of the front and back yin and yang boards. Some professional OEMs have changed the manual post-production and assembly of the front and back yin and yang boards.

The commonly seen method is to use the normal 2 in 1 splicing board, which can greatly save the cost of scrapping the circuit board factory. The method used is to first take 100 boards in front of the SMT (the number can be determined by yourself) and finish the reflow soldering on the first side, and then take it back and run the second side, and manually assemble it and prepare for printing. The new version of the first side, so as to achieve the purpose of 4 in 1 positive and negative Yin Yang board, and can also improve the efficiency of solder paste printing.

Of course, this method may require an additional labor cost, but it is also possible to use the operator who is already operating the solder paste printing machine to do the manual assembly work, as long as the Cycle time can keep up; in addition, in order to overcome the labor The problem of inaccurate alignment of solder paste lead and brush may be caused by the jigsaw. It is necessary to make a special carrier (carrier) for this kind of manual solder paste printing, so that the operator can easily put the board into the board. Position.

After the solder paste is printed, remove the board from the carrier, and then fix the artificial Yin-Yang board with tape to print, because each board has its fidicial mark, pick & The accuracy of place) depends on these positioning points, so even if there is a slight error in the puzzle, the accuracy will not be lost.

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