Crystal grain taking and placing device

The utility model discloses a crystal grain pick-and-place device, which comprises a base, a vertical guide structure, a transverse guide structure, a suction nozzle assembly and a motor, the vertical guide structure comprises a vertical guide rail and a vertical sliding seat, the vertical guide rail is arranged on the base, the vertical sliding seat is connected with the vertical guide rail in a sliding manner, the transverse guide structure comprises a transverse guide rail and a transverse sliding seat, and the suction nozzle assembly is arranged on the transverse guide rail. The transverse guide rail is connected to the vertical sliding seat, the transverse sliding seat is slidably connected to the transverse guide rail, the suction nozzle assembly is connected to the transverse sliding seat, the motor is arranged on the base, an output shaft of the motor is sleeved with a wheel disc, the wheel disc is fixedly provided with a cam follower, and the cam follower is connected to the transverse sliding seat.