Die for lower reinforcement plate part of automobile A pillar

The invention relates to a die for a lower reinforcement plate part of an automobile A pillar, which comprises an upper die assembly and a lower die assembly. The upper die assembly comprises an upper die seat and an upper die core, an upper die insert and an upper die pressure device which are arranged on the upper die seat; the upper die core is positioned at the lower part of the upper die seat; the lower die assembly comprises a lower die seat and a lower die core and an ejector which are arranged on the lower die seat; the lower die core is positioned at the upper part of the lower die seat; the upper die assembly also comprises a plurality of upper ejector rods; the upper ejector rods pass through the upper die seat to be abutted against the top of the upper die core; the upper die core is provided with a trimming and punching female die, a flanging and sizing female die and a side punching female die; and the lower die core is provided with a trimming and punching male die, a flanging and sizing male die and a side punching male die. Compared with the prior art, three sets of dies are integrated into one set of die according to the invention; the production process is reduced; and due to adoption of the structure of the upper ejector rods, the die is convenient to maintain and a pressure power source does not need to be checked or replaced before production each time.