Flexible mold used for profile stretch bending

The invention provides a flexible mold used for profile stretch bending. The flexible mold comprises an X-direction positioning assembly (1), a Z-direction adjustment assembly (2) and a punch assembly (3), the X-direction positioning assembly (1) can adjust the position of the Z-direction adjustment assembly (2) in the X direction, the punch assembly (3) comprises a plurality of punches (33), and the Z-direction adjustment assembly (2) can adjust the position of each punch (33) in the punch assembly (3) in the Z direction. The flexible mold can meet production requirements of small-batch stretch bending of airplane profiles with a plurality of types, the mold design and manufacturing cycle is shortened, the number of molds is reduced, and the airplane development speed is increased. The flexible mold used for profile stretch bending can also be used for stretch bending production work of airplane profiles differing in specification and curvature.