Forming pre-pressing structure

The invention discloses a forming pre-pressing structure. The problem that in a car stamping mold, the fact that a forming mold easily generates running and wrinkling is always troublesome is solved.Particularly in the n-shaped forming condition, when an upper insert presses a product, a downward pressing material plate is not pressed simultaneously, a middle groove product forming process hangsin the air, the side line of the formed product is prone to irregularly running, and profile wrinkling happens. In the prior art, if the condition happens, the manner that polyurethane is added in themiddle of a groove is selected, the manner is low in cost although, and the polyurethane mounting manner is extremely convenient, in the actual production process of the polyurethane, fatigue damageis prone to appearing, the safety hidden danger is easily caused, after the polyurethane is used for a period of time, the problem that the forming mold is prone to running and wrinkling easily appears. The structure comprises a