Blade punching type spiral shaft

The utility model provides a blade punching type spiral shaft which comprises a connecting shaft, the outer wall of the connecting shaft is fixedly connected with a spiral blade, the spiral blade comprises a first spiral part and a second spiral part which are integrally formed, the first spiral part is located on the front portion of the connecting shaft, and the second spiral part is located on the rear portion of the connecting shaft. Open holes are formed in the connecting position of the first spiral part and the connecting shaft and located in the upper side and the lower side of the connecting shaft. The shaftless spiral conveyor is simple in structure and easy to manufacture, guarantees conveying of special materials, solves the problem that blades of a traditional shaftless spiral conveyor are prone to being blocked or blades of a shaftless spiral conveyor are prone to being deformed, and improves conveying efficiency. 本实用新型提供一种叶片打孔式螺旋轴，包括连接轴，所述连接轴外壁固定连接螺旋叶片，所述螺旋叶片包括一体成型的第一螺旋部和第二螺旋部，所述第一螺旋部位于连接轴的前部，所