The present utility model relates to the technical field of oil cylinders for injection blow molding machines, in particular to a buffer oil cylinder for an injection blow molding machine, comprising a cylinder body and a piston rod telescopically connected with the cylinder body. The piston rod consists of an output shaft and a first piston fixed at the end of the output shaft. Buffer mechanisms are assembled on both left and right sides of the first piston, each buffer mechanism consists of a fixed disk and a buffer assembly mounted on the fixed disk, the buffer assembly comprises a fixed cylinder, a second piston is telescopically connected in the fixed cylinder, and a suction cup is fixed at one end of the second piston away from the fixed cylinder. By installing buffer assemblies on both side surfaces of the first piston, the extension and retraction of the output shaft are effectively buffered during mold opening and closing of the injection blow molding machine, reducing the impact force of the first piston on the cylinder base and effectively reducing the loss of the oil cylinder and the mold.

Country Code: CN

Application Number: CN202223271046.6