Why do we need to stay on the edge of PCB production?

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In the PCB production process, the reservation of process edges is of great significance for subsequent SMT chip processing. The process side is to increase the part of the PCB board on the two or four sides of the PCB board. It is mainly used to assist production and is not part of the PCB board. It can be removed after the PCBA manufacturing is completed.

The main reason to keep the process edge is that the SMT placement machine track is used to clamp the PCB board and flow through the placement machine, so the components that are too close to the track edge pick up the components in the SMT placement machine nozzle and mount them to When the PCB board encounters a collision phenomenon, production cannot be completed, so certain process edges must be reserved, such as 2-5mm and so on. Similarly, it is also suitable for some plug-in components to prevent similar phenomena when wave soldering.

The flatness of the PCB production process is also an important part of PCB production. When removing the PCB production process edge, it is necessary to ensure that the process edge is flat, especially for PCB boards with extremely high assembly accuracy requirements. Any uneven burrs will cause the installation hole position to shift, which will bring great damage to subsequent PCBA assembly. trouble.