A hollow blow molding machine relates to the technical field of blow molding machines, comprising a machine body, an extrusion mechanism, two mold opening and closing devices arranged on the left and right sides of the extrusion mechanism, two air blowing devices symmetrically arranged on both sides of the extrusion mechanism, and limiting grooves respectively fixed below a first transmission block and a second transmission block. Guide blocks are respectively fixed at the bottom ends of the first transmission block and the second transmission block, and the lower parts of the guide blocks extend into the limiting grooves and fit between guide wheels on two inner side walls of the limiting grooves. The mold opening and closing device comprises a mold mounting plate A and a mold mounting plate B which are oppositely arranged, and the mold mounting plate A and the mold mounting plate B are connected through two synchronous transmission devices. Each synchronous transmission device comprises a U-shaped pipe, a preset number of steel balls slidably arranged in the U-shaped pipe, and two transmission rods with one ends respectively inserted into two wings of the U-shaped pipe. The operation tracks of the mold opening and closing devices at two stations are not easy to deviate, and the two half-molds of each mold opening and closing device run synchronously and accurately.
Country Code: CN
Application Number: CN201821566146.2
