Stamping die inner bridge type negative oval protruding hole forming die

The utility model discloses a stamping die inner bridge type negative oval protruding hole forming die which comprises a bottom plate, first supporting columns are fixedly connected to the two sides of the top of the bottom plate respectively, the outer sides of the two first supporting columns are in sliding connection with the inner sides of two connecting cylinders respectively, and second connecting columns are fixedly connected to one ends of the two connecting cylinders respectively. One ends of the two second connecting columns are fixedly connected with the two sides of the bottom of a top plate respectively, the top of the top plate is fixedly connected with a guide cylinder, the center of the bottom of the top plate is fixedly connected with the top of a fixing plate, and the bottom of the fixing plate is fixedly connected with a bridge type forming plate. The mold can provide certain buffering for the guide column, the situation that the guide column is broken due to the fact that the pressure born