Elements for bending plates made of a material in the plastic state, use of such elements for bending and hardening plates and a device equipped with such elements

摘要

An element for bending or hardening a movable plate in a plastic state. The element has a surface adapted to contact the plate where the surface has a plurality of bending profiles taken in a plane at right angles to the direction of movement of the plate. Means are provided to rotate the element in the plane in order to vary the radius of curvature of the surface contacting the plate.