Plastic mold cooling device

The utility model belongs to the field of plastic molds, and particularly relates to a plastic mold cooling device which comprises a base, the top of the base is fixedly connected with a supporting plate, the side face of the supporting plate is rotationally connected with a threaded rod, the surface of the threaded rod is meshed with a first sliding block, and the side face of the first sliding block is fixedly connected with a transmission rod. According to the utility model, the disc is arranged, the generator is electrified to drive the disc to rotate, the rotating plate is fixedly connected with the disc, so that the disc can drive the rotating plate to rotate together when the disc rotates, and the swing rod is rotationally connected with the rotating plate, so that the swing rod can be driven to move left and right when the rotating plate rotates; at the moment, the transmission column rotationally connected with the swing rod can move left and right along with the swing rod, due to the fact that the c