The present utility model discloses a mounting and fastening structure for a barrel of an injection blow molding machine, comprising a barrel base with a barrel mounting hole on its side wall. A tubular barrel is arranged in the barrel mounting hole, the tail of the barrel is a connecting body, an external thread is arranged on the outer wall of the barrel in front of the connecting body, a locking nut threadedly connected with the external thread is arranged on the barrel, an annular groove is arranged on the rear outer wall of the connecting body, two semicircular half rings are clamped in the annular groove, a slot is arranged on the connecting body in front of the annular groove, a pin hole corresponding to and communicated with the slot is arranged on the barrel base, a positioning pin is arranged in the pin hole, an internal feeding hole is arranged on the connecting body in front of the slot, an external feeding hole is arranged on the barrel base, and the internal feeding hole is communicated with the external feeding hole. When installing the barrel of the injection molding machine, it is necessary to reach into the cavity to tighten the locking nut, but the operation is extremely inconvenient due to the narrow space of the cavity.

Country Code: CN

Application Number: CN201720004755.8