Improved stacking machine

The utility model provides an improved stacking machine. The device comprises a rack, a side alignment device and a carrier roller conveying device, the side alignment device comprises a connecting arm and a side alignment plate; the bottom ends of the connecting arms are fixedly connected to the two ends of the side alignment plate correspondingly. The top ends of the connecting arms are respectively arranged on the rack; the carrier roller conveying device comprises a swing shaft, a swing arm, a limiting plate, a carrier rod, a plurality of carrier rollers and a swing driving piece. The twoends of the swing shaft are rotationally installed between the two connecting arms on one side. The top end of the swing arm is fixed on the swing shaft; the swing arms are spaced by a preset distance, the limiting plate and the supporting rod are fixed to the bottom ends of the swing arms in parallel, the supporting rod is located on the inner side of the limiting plate, the carrier rollers are rotationally installed on