The 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 by means of a simple structural modification through the use of the caisson structure and its rotating shaft fulcrum. The horizontal displacement of the mold clamping mechanism does not cause defects in the parting 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
