Sequential four-time-ejection demolding device for injection mold

The invention discloses a sequential four-time-ejection demolding device for an injection mold. The sequential four-time-ejection demolding device for the injection mold comprises a stop block E, a stop block F, a key block e, a key block f, a spring bolt e, a spring bolt f, an oil cylinder, a supporting block and a spring. The stop block E and the stop block F are fixed to the left portion and the right portion on the upper face of an ejection plate A correspondingly. The key block e, corresponding to the stop block E, is downwards fixed to the left portion of the front face of a movable moldcarrier plate. The key block f, corresponding to the stop block F, is downwards fixed to the right portion of the front face of the movable mold carrier plate. The spring bolt e, corresponding to thestop block E, is located in the front face of an ejection plate C. The spring bolt f, corresponding to the stop block F, is located on the front face of an ejection plate D. A cylinder block of the oil cylinder is fixed to th