Cold heading molding die of component with H-shaped cross section

The utility model relates to a cold heading molding die of a component with an H-shaped cross section, which comprises an upper die assembly and a lower die assembly, wherein a first truncated cone-shaped projection part protruded from the lower surface of an upper die core plate is disposed on the lower surface of an upper die head in the upper die assembly, and an upper nitrogen spring is disposed between the upper surface of an upper die base plate and the lower surface of an upper die base; a concave part is disposed in the upper surface of a lower die core plate in the lower die assembly, a lower die head is disposed in the concave part, and a second truncated cone-shaped projection part protruded upwards is disposed on the lower die head; and a lower nitrogen spring is disposed between the lower surface of a lower side base plate and the upper surface of a lower die base. By specially designed shapes of die cores and the die heads, the cold heading die in the utility model realizes five times of extrusion in one cold heading cycle in order to form a cold heading component with the H-shaped cross section. In the die of the utility model, the nitrogen spring is disposed between the die base and the base plate to realize a buffering operation and reduce noise in the operation, so that the operation is more stable and service life is longer.