The present utility model discloses a mold opening mechanism for an injection stretch blow molding machine, relating to the technical field of blow molding machines. It comprises a base, the upper surface of the base is fixedly connected with two support plates, a sliding groove is formed on the facing sides of the two support plates, a transmission mechanism is arranged above the base, a mold assembly is arranged above the transmission mechanism, and an exhaust mechanism is arranged above the mold assembly. Through the cooperation of the transmission mechanism, the mold assembly and the exhaust mechanism, the transmission mechanism can first close the mold assembly for product processing, and can fill cold air into the mold assembly to accelerate product molding. Meanwhile, when the air pressure inside the mold assembly is too high, it can be discharged through the exhaust mechanism, thereby solving the problem that the long natural cooling time of molded products reduces the production efficiency.

Country Code: CN

Application Number: CN202123293117.8