This invention relates to the technical field of injection blow molding machines, specifically to a demolding device for irregularly shaped bottles in an injection blow molding machine. It includes a demolding frame and a rotating arm. The rotating arm is movably mounted on the demolding frame. A demolding plate is mounted on the end of the rotating arm opposite to the demolding frame. The demolding plate includes a plate body and bottle neck grooves. One end of the plate body is fixedly connected to the top of the rotating arm by bolts, and the other end of the plate body has evenly spaced bottle neck grooves. An offset ejection mechanism is movably mounted on the plate body. The offset ejection mechanism consists of an ejection component and two offset pushing components. The two sides of the ejection component are driven synchronously by the two offset pushing components. The two offset pushing components have the same structure and are distributed on both sides of the ejection component. A flipping mechanism for driving the demolding plate to flip is mounted in the middle of the demolding frame. This invention features an offset ejection mechanism, which allows for complete separation of the irregularly shaped bottle from the demolding plate during the flipping process, improving work efficiency.

Country Code: CN

Application Number: CN202111555549.3