The utility model discloses a blow molding mechanism of a plastic injection blow molding machine, comprising a shell. An operating table is arranged inside the shell, a water tank is arranged in the middle of the operating table, a storage shell is arranged inside the water tank, a mold is arranged inside the storage shell, an air inlet is arranged at the upper end of the mold, fixed blocks are fixedly connected to both sides of the storage shell, a fixed groove is formed in one side of each fixed block, a fixed plate is arranged inside the fixed groove, pull rods are symmetrically arranged on one side of the fixed plate, springs are arranged outside the pull rods, and the other ends of the pull rods pass through one side of the fixed blocks and extend to the outside. In the utility model, by arranging the water tank and the cooling pipe, the lower end of the mold is placed in the water tank during production, and products are manufactured by the blow molding machine. The temperature of the mold will be very high when manufacturing products, and the mold is cooled by the cooling pipe, so that the mold can be taken out quickly and the work efficiency is improved.

Country Code: CN

Application Number: CN202322823239.6