Hardness testing device for solder mask of PCB (Printed Circuit Board)

The resistance welding film hardness testing device of the PCB is applied to the field of PCB detection, before detection, the feeding action of a detection piece is achieved through overturning of the detection pen, during detection, the detection pen is driven by the overturning table to reset, the vertical state of the detection pen is kept, the detection pen makes contact with the surface of a resistance welding film of the to-be-tested PCB, and the hardness of the resistance welding film of the to-be-tested PCB is detected. And when the hardness of the detection piece is smaller than that of the solder resist film, the detection piece is rotationally ground and consumed to be fractured, at the moment, the two groups of conductive contacts on the detection pen lose the conductive effect of the detection piece and lose detection current, and then the hardness grade of the solder resist film can be judged. And only dotted detection points are formed on the surface of the PCB, so that the destructiveness is