A hollow blow molding machine with high-efficiency extrusion protection relates to the technical field of 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 moving mechanism is drivingly connected with the mold closing mechanism, and an air blowing needle mechanism is arranged on one side of the machine head; a sol 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 can effectively feed back the extrusion pressure of molten plastic during extrusion, and can clearly judge whether the equipment is normal according to the pressure value; in order to avoid electrical interference, a rupture disc assembly is added, the rupture disc has a pressure upper limit, and the machine stops for protection when the pressure exceeds the limit.
Country Code: CN
Application Number: CN201921785331.5
