Adjustable bending die

The utility model relates to an adjustable bending die which comprises an upper die part and a lower die part, wherein the upper die part consists of an upper template, a convex die cushion block, an upper die adjustable cushion block, a first hexagonal cushion block, a first screw and a convex die, the lower die part consists of a lower die cushion block, a lower die adjustable cushion block, a support plate, a second hexagonal cushion block, a third hexagonal cushion block, a second screw, a third screw and a lower template. The adjustable bending die has the advantages that: firstly, the adjustable bending die has compact and novel structure, and the position of the upper die adjustable cushion block, the lower die cushion block or the support plate is adjusted by the rotation of the hexagonal cushion block or the addition of a gasket, therefore, U-shaped bending pieces of different sizes in a same type can be produced without processing a plurality of pairs of dies; and secondly, the manufacture cost is low without the plurality of pairs of dies and frequent change of the die, therefore, the labor intensity of a worker is reduced, and the working efficiency is improved.