The present application discloses a double-layer enveloping die head for an automatic hollow blow molding machine. The double-layer enveloping die head for the automatic hollow blow molding machine comprises an oil cylinder, an adjusting rod, a storage cylinder and an die. The adjusting rod sequentially penetrates through the oil cylinder, the storage cylinder and the die. The storage cylinder comprises an injection piston and a cylinder body, one end of the injection piston is fixed to the oil cylinder, the cylinder body is sleeved on one end of the injection piston away from the oil cylinder, one end of the cylinder body away from the injection piston is fixed to the die, an outer sleeve, an inner core and a storage core are sequentially arranged between the injection piston and the adjusting rod, the top end of the storage core is fixed to the injection piston, a first runner is formed between the inner core and the storage core, a second runner is formed between the outer sleeve and the inner core, and a first feeding port and a second feeding port respectively communicated with the first runner and the second runner are arranged on the side wall of the injection piston. The double-layer enveloping die head for the automatic hollow blow molding machine can produce high-strength tube parisons.
Country Code: CN
Application Number: CN201721399875.9
