The present invention discloses a synchronous mold opening and closing mechanism for injection and blow molding of an injection blow molding machine, comprising a mold opening and closing oil cylinder connected to the crossbeam of the injection blow molding machine. One end of a mold opening and closing oil cylinder push rod of the mold opening and closing oil cylinder extends out of the crossbeam, the head of the mold opening and closing oil cylinder push rod is connected with a connecting rod, and the mold opening and closing oil cylinder push rod is connected to the middle of the connecting rod. The two ends of the connecting rod are respectively connected with a blow molding tie rod shaft and an injection tie rod shaft which are arranged parallel to the mold opening and closing oil cylinder push rod. The blow molding tie rod shaft and the injection tie rod shaft are respectively slidably connected to the crossbeam. The other end of the blow molding tie rod shaft passes through the crossbeam and is connected with a blow molding movable mold plate, and the other end of the injection tie rod shaft passes through the crossbeam and is connected with an injection movable mold plate. In use, the mold opening and closing oil cylinder drives the connecting rod to move, the connecting rod drives the blow molding tie rod shaft and the injection tie rod shaft to move synchronously, and the blow molding tie rod shaft and the injection tie rod shaft respectively drive the blow molding movable mold plate and the injection movable mold plate to move synchronously, thereby realizing synchronous opening and closing of the blow mold and the injection mold.

Country Code: CN

Application Number: CN201610764084.5