The invention relates to an injection mechanism of an injection blow molding machine, belonging to the technical field of injection blow molding machines. It comprises a frame, a turret installed on the frame and an injection assembly installed on the frame. The turret includes a triangular turntable and a number of mandrels installed on the side of the triangular turntable, and the injection assembly includes a lower injection mold and an upper injection mold. The lower surface of the lower injection mold is fixedly installed on the frame, the upper injection mold is slidably installed on the frame and located above the lower injection mold. A number of lower injection cavities are opened on the side of the lower injection mold close to the upper injection mold, and a number of upper injection cavities are opened on the side of the upper injection mold close to the lower injection mold, with the upper injection cavities in one-to-one correspondence with the lower injection cavities. A number of positioning blocks are connected to the top wall of the lower injection mold and located on both sides of the lower injection mold, and a number of first positioning grooves for the positioning blocks to insert are opened on the upper injection mold, with the first positioning grooves in one-to-one correspondence with the positioning blocks. The invention has the effects of improving the positioning accuracy of the upper injection mold and reducing the offset of the upper injection mold.

Country Code: CN

Application Number: CN202222537615.0