Cooling mechanism of injection mold

The invention discloses a cooling mechanism of an injection mold. The cooling mechanism comprises a bottom plate, a fixed mold block is fixedly connected to the top of the bottom plate, a movable moldblock is arranged on the top of the fixed mold block, an injection molding hole is formed in the top of the movable mold block, and a first water cooling groove is formed in the movable mold block. Through the bottom plate, the fixed mold block, the movable mold block, the injection molding hole, the first water cooling groove, a second water cooling groove, a containing groove, an air cylinder,an ejector rod, a water cooling and air cooling mixed cooling mechanism, a fixed block, a supporting frame and an air cooling mechanism, the problems that a modern injection mold often uses water forcooling a mold cavity in order to quicken the forming speed in the mold cavity, the manner easily causes residue of a large amount of water, and the service life of the injection mold is affected aresolved, meanwhile, the probl