Large-diameter rotating drum tire mold

The utility model relates to a large-diameter rotating drum tire mold which comprises a bottom pad and a cover mold, wherein the structure of the bottom pad is identical to that of a hollowing part of a discharged blank material; the peripheral structure of the cover mold is identical to that of the discharged blank material; the bottom pad and the cover mold are movably connected in a vertical fitting manner. The thermal treatment hardness of the tire mold is HRC45-47; the thermal shrinking percentage is 1.5%; the size of bore design is based on the forge piece size heating shrinking percentage. By adopting the mold, the problem that a batch of small blanks can be only forged into round cakes as rotating drums with the diameters of fai495-510 are various; by adopting universal tire mold forging, not only is the utilization rate of a material improved, but also distribution of fibers inside metal are well protected, and the service life of components is further prolonged. The mold adopts sealed type die forgi