A hollow blow molding machine with extrusion protection relates to the technical field of hollow blow molding machines; it comprises a frame, a machine head is arranged in the frame, a parison cutting mechanism is arranged on the frame at the parison outlet of the machine head, a mold closing mechanism is arranged below the machine head, a mold shifting mechanism is drivingly connected with the mold closing mechanism, and a blowing needle mechanism is arranged on one side of the machine head; the machine head is connected with an extrusion system driven by an asynchronous motor, and a melt pressure sensor and a rupture disc assembly are installed on the adapter between the extrusion system and the machine head; a sensing rod is screwed into the rupture disc, the rupture disc is clamped in a fixing clamp, the fixing clamp is fixed on a fixing plate through screws, a pin is inserted on the sensing rod, and a travel switch is fixed on the fixing plate through screws. The utility model effectively protects the stability of the whole device, shuts down for protection when the pressure exceeds the limit, and prioritizes melt pressure monitoring followed by rupture disc protection on the equipment, realizing stable production and protection of the equipment.
Country Code: CN
Application Number: CN201921796513.2
