The invention discloses a blow molding machine for producing cubic containers, comprising a frame, a screw extruder, a die head, a mold clamping device, an air blowing device, a hydraulic system, a pneumatic system and a control device. The die head comprises a die head body, a mandrel and a die opening mechanism; a storage bin is arranged in the die head body, and the die opening mechanism comprises a connecting ring, a die fixing sleeve, a die, a core mold, a flexible ring and a flexible ring limiting sleeve. The invention also discloses a working method of the blow molding machine for producing cubic containers, comprising the processes of installing the die head mechanism, extruding by the extruder, pushing to form a specified parison, pre-blowing, mold clamping and blowing, mold opening and deflashing to complete processing. By modifying the die opening mechanism, the flexible ring is pulled by a driving mechanism and deformed under force, changing the flow channel of the parison formed between the core mold, the die and the flexible ring. The parison deforms at positions corresponding to the eight top corners of the cubic container, realizing radial clearance adjustment. The device is lighter in weight and convenient for assembly and disassembly.
Area Code: CN
Application Number: CN201710596655.3
