Die opening and closing mechanism

The utility model discloses a die opening and closing mechanism. The mechanism is installed on a bottle blowing machine and comprises a bottom die, a fixed die plate which is arranged on a rack of the bottle blowing machine, a movable die plate which is matched with the fixed die plate, and a drive mechanism for driving the movable die plate to move. The die opening and closing mechanism has a die opening state and a die closing state, and when the die opening and closing mechanism is in the die closing state, the bottom die, the fixed die plate and the movable die plate define a cavity; the drive mechanism comprises a rotating shaft which can rotate around the self axis direction and a power source for driving the rotating shaft to rotate; the movable die plate is fixedly connected with the rotating shaft. The movable die plate is fixedly connected with the rotating shaft and driven to rotate through the rotating shaft, so that parts of the die opening and closing mechanism are reduced, the volume of the who