The invention provides a screw dry material filtering device for a hollow blow molding machine, comprising a runner shell, a connecting part, an oil cylinder base, a hydraulic oil cylinder, a hydraulic valve and an inserting plate; an opening is arranged on the runner shell; a connecting part is arranged on the outer surface of the runner shell; the oil cylinder base is fixedly connected with the connecting part; the hydraulic oil cylinder is arranged on the oil cylinder base; the hydraulic valve is connected with the hydraulic oil cylinder through a pipeline; the inserting plate is movably inserted into the opening; the inserting plate is connected with a piston rod of the hydraulic oil cylinder; a filter screen fixing seat with a through hole is arranged on the inserting plate, a filter screen is arranged on the filter screen fixing seat, and the filter screen is matched with the through hole. According to the technical scheme, dry materials generated in the extrusion molding process of the screw A are filtered through the scheme, so that no dry materials exist in the molded plastic oil tank, and the problem of scrapping of the plastic oil tank caused by dry materials is eliminated; the dry material detection post after blow molding of the plastic oil tank is cancelled, the labor cost is reduced for the blow molding production line, and the production efficiency of the production line is improved.
Country Code: CN
Application Number: CN201711407221.0
