Special negative angle forming mechanism

The utility model discloses a special negative angle forming mechanism which comprises an upper die base and a lower die base, the top of the upper die base is connected with an upper padding plate, a nitrogen spring is installed on the upper padding plate, the bottom of the nitrogen spring is connected with an upper material pressing plate, the two sides of the top of the lower die base are connected with an upper die plate A and an upper die plate B respectively, and the upper die plate A and the upper die plate B are arranged on the lower die base. A bending block A is connected to the right side of the upper die plate A, a bending block B is connected to the left side of the upper die plate B, and a lower die floating material core is arranged on the upper side between the bending block A and the bending block B. According to the special negative angle forming mechanism, a product with a negative angle can be subjected to mold production through a simple mechanism, the complex structure is simplified, the