An extrusion mechanism of a blow molding machine comprises a machine table and a screw extrusion mechanism mounted thereon. The front end of the machine table is provided with a die head and a mold clamping mechanism; the screw extrusion mechanism is located on a caisson bottom plate capable of pitching back and forth, and the middle part thereof is supported by a power support base. The caisson bottom plate is fixed on a rotating shaft installed in a shaft hole on the frame; the power support base is an air cylinder or a hydraulic cylinder. The utility model realizes the lifting action of the screw extrusion mechanism with a simple structural modification by using the caisson structure and its rotating shaft fulcrum. The horizontal displacement of the mold clamping mechanism does not cause defects in the parison cut-off; the whole machine has a simple structure, low energy consumption and low noise during operation, and the whole working procedure is smooth, improving work efficiency, effectively shortening the processing time of a single product and increasing output.
Country Code: CN
Application Number: CN200320128833.3
