This invention discloses a double-layer extrusion blow molding machine die head, including a storage cylinder. A storage core is disposed within the cavity of the storage cylinder along its axial direction. A sliding space is formed in the middle of the storage core along its axial direction. An adjusting rod is slidably disposed within this sliding space. The top end of the adjusting rod is fixed to a servo cylinder, and the bottom end is fixed to the die core. An intermediate ring, an injection piston, and an outer sleeve are sequentially fitted around the outside of the storage core. The intermediate ring, injection piston, and outer sleeve are located within an actuation space. A first flow channel space is formed between the intermediate ring and the storage core, and a second flow channel space is formed between the outer sleeve and the inner wall of the storage cylinder. The bottom ends of the first and second flow channel spaces are connected to the storage space. This invention provides a simple double-layer extrusion blow molding machine die head that can produce double-layered plastic containers with uniform thickness.
Country Code: CN
Application Number: CN201420443941.8
