Cooling device of blowing mold

The utility model relates to the technical field of mold cooling, in particular to a cooling device of a blow molding mold, which comprises a base and a cooling box, a cavity is arranged at the top end of the base, a rotating shaft is rotatably arranged on the inner bottom wall of the cavity, a driven gear is arranged on the outer wall of the rotating shaft, and cooling liquid enters a cooling pipe and is cooled by the driven gear after entering the cooling pipe. The bottom end of a blowing mold fixed to a clamping table is rapidly cooled, so that the time needed for mold base forming is shortened, cooling liquid flows into a backflow pipe through a cooling pipe and then flows back into a condenser, circulating and continuous cooling of the cooling pipe is achieved, and the cooling effect is guaranteed; the rotating shaft drives the clamping table, and the clamping table drives the blowing mold to rotate slowly, so that the four side walls of the blowing mold are in contact with cold air, flowing of the cold