Method and device for bending sheets

Abstract

A method for bending a sheet is described. The method includes the following steps: a) at least one sheet is inserted into a pre-bending ring with a movable bending ring holder, the at least one sheet is heated at least to an approximately softening temperature, and the at least one sheet is prebent in the pre-bending ring to 5% to 50% of a final edge bending, b) the pre-bent sheet is lifted out of the pre-bending ring by means of a suction device and is bent further, beyond a bending obtained in the pre-bending ring, c) the at least one sheet is laid down by means of the suction device in a final-bending ring on the movable bending ring holder and the at least one sheet is bent to a final bending, and d) the at least one sheet is cooled down in the final-bending ring and the at least one sheet is bent by means of the suction device to 100% to 130% of an overall final edge bending.

Dependencies are inferred from the claim text.