The invention discloses a PCB (
Printed Circuit Board) lifting and overturning mechanism which comprises a suction device which is adsorbed with one surface of a PCB; the lifting and overturning mechanism is provided with a horizontal overturning rod, the two ends of the overturning rod are connected with vertical linear modules, one end of the overturning rod is connected with a
servo motor, a suction device is assembled on the overturning rod, and the overturning rod has the vertical lifting freedom degree and the rotation freedom degree around the axis of the overturning rod; the
assembly line comprises a streamline platform and an
exposure platform which are arranged above and below the overturning rod respectively, and the flowing directions of the streamline platform and the
exposure platform are parallel and opposite; and a
manipulator with a suction device is arranged in the same end direction of the
manipulator, the streamline platform and the
exposure platform. According to the invention, the material taking function and the turn-over function are integrated together, the device is arranged right above the exposure
machine platform, the vertical space is fully utilized, and the overall structure is compact. And the device is close to the exposure
machine, small in overturning action and high in efficiency.