Patent ID: 6354129
Filing Date: 2002-03-12
Classification: B21D

Abstract:
A bending machine for providing sheet metal panels with high edges, comprising:a stationary base; a counter blade that is fixedly mounted on the stationary base and defines a resting plane for a sheet metal panel; a turnable support for a blank holder that has a rear part hinged to said stationary base and a front part; a blank holder that is attached to a front face of said front part of said turnable support above said counter blade; first moving means connected with said turnable support in order to rotate said turnable support with respect to said stationary base between a rest position in which said blank holder is spaced from said counter blade and a working position in which said blank holder is pressed against said counter blade with a sheet metal panel interposed therebetween; and at least one bending blade which is at least vertically movable with respect to said counter blade and said blank holder and is engageable therewith in order to bend a peripheral edge of a sheet metal panel at an angle of at least 900 with respect to the resting plane of the sheet metal panel, wherein said blank holder is connected with said turnable support in an upwardly and downwardly slidable manner with respect to said turnable support, and second moving means causing said blank holder to move upwardly with respect to said turnable support at an end of a bending operation in order to increase the space between said blank holder and said counter blade with respect to a spacing caused by rotation of said turnable support from the working position to the rest position thereby allowing extraction of the bent edge of the sheet metal panel from the bending machine.