Cooling system for injection mold

The utility model relates to a cooling system for an injection mold, which belongs to the technical field of injection molds and comprises a cooling box internally provided with cooling liquid for cooling the injection mold; the fixed mold is fixedly mounted in the cooling box; the movable mold is arranged outside the cooling box and matched with the fixed mold, and the movable mold is connected with the cooling box through a guide piece; and the pushing piece is arranged in the cooling box and fixedly connected with the movable mold, and when the movable mold gets close to the fixed mold, the pushing piece pushes the cooling liquid in the cooling box to rise and enables the cooling liquid to make contact with the fixed mold to cool the fixed mold. The pushing piece is arranged in the cooling box and connected with the movable mold, when the movable mold moves for mold closing, cooling liquid in the cooling box ascends and descends through the pushing piece and makes contact with the fixed mold in the cooling