The present utility model discloses a single-cylinder injection mechanism with a hollow injection piston for an injection blow molding machine, comprising an injection mechanism main body. A protective cover plate is arranged at the bottom end of the injection mechanism main body, a processing frame is inserted into the center of the inner end of the protective cover plate, an outer clamping sleeve and a connecting rod are sleeved on the outer side of the front end of the processing frame, an injection nozzle is arranged at the top end of the connecting rod, a feed inlet is formed at the top end of the protective cover plate, a second clamping hood is arranged at the bottom end of the protective cover plate, a protective housing is arranged at the front end of the second clamping hood, a first clamping hood is arranged at the front end of the protective housing, a rear cover plate is arranged at the bottom of the inner end of the processing frame, a heating rotating plate is arranged at the front end of the rear cover plate, a rotating disc is arranged at the front end of the heating rotating plate, and a rotating shaft is arranged at the outer end of the rotating disc. The present utility model is a single-cylinder injection mechanism with a hollow injection piston for an injection blow molding machine, and realizes the purpose of preheating raw materials at the inner end through the arrangement of the processing frame.

Country Code: CN

Application Number: CN201920832873.7