Punch forming die

The utility model provides a punch forming die which comprises a punching die frame, a pre-forming die and a secondary forming die, the pre-forming die and the secondary forming die can be arranged on the punching die frame respectively, and positioning forming structures located at the same position are arranged between an upper die and a lower die of the pre-forming die and an upper die and a lower die of the secondary forming die respectively. A positioning molding structure on the pre-molding mold can be used for punching a positioning model on the bipolar plate; and the positioning model is matched with a positioning forming structure on the secondary forming mold, so that the bipolar plate can be positioned on the secondary forming mold. According to the punch forming die disclosed by the utility model, a positioning model can be formed on the bipolar plate during preforming and punching; the bipolar plate can be conveniently placed at a correct position on the secondary forming die during secondary for