Butt joint device of intelligent warehouse up-and-down stacking machine for conveying cargoes in batches

The invention relates to a butt joint device of an intelligent warehouse up-and-down stacking machine for conveying cargoes in batches. The butt joint device comprises a butt joint area, a lifting device and a conveying line. The butt joint area comprises a warehouse-in area and a warehouse-out area, the warehouse-in area and the warehouse-out area each comprise multiple layers of warehouse area conveying belts capable of being independently and bidirectionally driven, and the two ends, in the conveying direction of the warehouse area conveying belts, of each of the warehouse-in area and the warehouse-out area are open. The conveying line comprises a warehouse-out conveying line and a warehouse-in conveying line which are arranged on the upper layer and the lower layer. The lifting device comprises a lifting arm and a lifting machine used for lifting the lifting arm, the lifting arm comprises a middle conveying belt capable of being bidirectionally driven, and the middle conveying belt is used for conveying c