Movable injection molding mold

The utility model discloses a movable injection molding mold. The device comprises an outer frame body, the at least one forming cavity is formed in the outer frame body; the forming cavity comprises a left mold and a right mold; the left mold and the right mold are enclosed to form a molding cavity, a movable part is arranged in the molding cavity, the movable part comprises a stator, a rotor and a compression spring, the stator is fixed at one end of the molding cavity, the rotor is connected in the molding cavity in a sliding manner, and the compression spring is arranged in the molding cavity. The stator and the rotor are connected through a compression spring. Through the arrangement of the movable part, in the filling process of the short fiber composite material, due to the fact that the pressure in the forming cavity is increased, the rotor moves towards the rear end, the length of the tail end of the forming cavity can be continuously changed along with the increase of the pressure, and then the over