Sandwich board stacking machine can be used for purification board, rock wool insulation board, colored steel board, large wave tile board. Stacking machine adopts full servo motion control system, PLC programming automatic control, man-machine interface,vacuum sucker type grab and stacking. Automatic counting and stacking of boards with different lengths according to customer requirements; the conveying length of the machine is 8 meters, which can be directly connected with the main machine of the sandwich board to realize automatic stacking of finished boards and reduce manual handling costs.