Feeding system of plastic extruding machine

The invention belongs to the field of polypropylene extrusion molding processes, and relates to a feeding system of a plastic extruding machine. The feeding system comprises a shell, a powder feeding device is arranged on the upper side of the shell, the powder feeding device is used for adding materials to PP pipe extrusion molding, a fixing shaft is fixedly arranged on the lower side of the shell, a rotating pipe is rotationally arranged on the lower side of the fixing shaft, and a circle of annular groove is annularly formed in the outer side wall of the rotating pipe. The feeding system of the plastic extruding machine is used for uniformly feeding polypropylene powder and scraping off the polypropylene powder from a bonding part on the wall of a feeding pipe, so that the feeding pipe is prevented from being blocked, the waste of raw materials is reduced, and it can be ensured that no polypropylene powder is remained on a turntable during working. 发明属于聚丙烯挤塑工艺领域，为一种挤塑机进料系统，一种挤塑机进料系统,包括壳体，所述壳体上侧设有粉末进料装置，粉末进