The present utility model discloses a push plate ejection mechanism for a movable core rod of an injection blow molding machine, comprising a core rod tip, a core rod, a limit plate, a fixing frame, a variable frequency motor, an eccentric wheel and a guide rod. The core rod tip is arranged inside the core rod, the end of the core rod tip is connected with the end of the guide rod through a piston head, the end of the guide rod is connected with a first connecting lug at one end of a transmission rod through an ear mount, the other end of the transmission rod is connected with the eccentric wheel through a second connecting lug, and the eccentric wheel is rotatably connected with the fixing frame. In the utility model, the core rod tip is arranged inside the core rod, and the end of the core rod tip is connected with the guide rod. The extension and retraction of the guide rod can control the entry and exit of the core rod tip in the core rod, the guide rod is hinged with the first connecting lug at the end of the transmission rod through the ear mount, the transmission rod is connected with the eccentric wheel through the second connecting lug, and the rotation of the eccentric wheel is controlled by the variable frequency motor, so that the extension and retraction frequency of the guide rod can be adjusted, thereby changing the ejection frequency of the core rod tip.

Country Code: CN

Application Number: CN202520000608.8