Multi-story building 3D printing system and using method thereof

The invention discloses a 3D printing system for a multi-story building. The 3D printing system comprises a lifting system, a robot system and a feeding system. The lifting system comprises a plurality of hydraulic lifters, a frame and a track; wherein the hydraulic lifters are uniformly arranged at the bottom of the frame, and the rail is fixedly arranged in the frame; the robot system is composed of a plurality of industrial robots, the industrial robots are movably connected with the track, and each robot comprises a rack, a transmission mechanism and a 3D printing part; the 3D printing part comprises a movable printing head connecting arm, a concrete printing end and a metal printing end; the concrete printing end and the metal printing end are fixed to one side of the rack through a printing head connecting arm. 本发明公开了一种多层建筑3D打印系统，包括升降系统、机器人系统和送料系统；所述升降系统包括多台液压升降机、框架和轨道；其中液压升降机均匀设置在框架底部，框架内部固定设置有轨道；所述机器人系统由多个工业机器人组成，工业机器人与所述轨道之间活动连接，机器人包括机架、传动机构和3D打印部；3D打印部包括可移动的打印头连接臂、混凝土打印端和金属打印端组成；所述混凝土打印端和金属打印端通过打印头连