The utility model discloses a double-layer die head structure for a blow molding machine, comprising a distribution ring with an outer ring and an inner ring, a tail mold base and an outer mold sleeve axially connected to both sides of the outer ring, and a distribution cone and a distribution spiral core axially connected to both sides of the inner ring. The distribution cone is located at the axis of the tail mold base, and the distribution spiral core is located at the axis of the outer mold sleeve. A layered spacer ring is arranged between the distribution spiral core and the outer mold sleeve, forming an outer feeding channel and an inner feeding channel. In this design, the inner parison and the outer parison are compounded, pass along the surface of the distribution spiral core, and are extruded between the die and the core mold to form a double-layer parison required for the blow molding process, resulting in products with good performance.
Area Code: CN
Application Number: CN201520620213.4
