Sheet-metal bending device
AssigneeLift Verkaufsgerate-Gesellschaft m.b.H.
InventorOtto Schubert
Life of this patent
Estimating the term…
Abstract
A sheet bending device (1) is described, comprising two bending punches (19, 20), pivotally connected together, which are disposed alongside each other in a frame (2), and of which at least one is pivotally mounted and is coupled to a pivoting drive (24), and comprising a counter-punch (10), situated opposite the bending punches (19, 20) and arranged to be linearly movable between a working position on the sheet (18) and a retracted position, about which counter-punch the sheet (18) is bent in the working position, wherein the two bending punches (19, 20) are articulated to each other or pivotally supported in the frame (2) in the working region itself.
Claims16
A sheet bending device comprising:
- three punches, the first and second of said three punches being bending punches which are disposed adjacent to one another and have sheet contact zones, each of said two bending punches including removable tool segments disposed adjacent to one another in an aligned relationship and defining, with their respective sheet contact portions, said sheet contact zones, the third of said three punches being a counter-punch which is positioned opposite to said two bending punches;
- means for linearly moving said counter-punch between a retracted inoperative position away from said two bending punches and an operative position adjacent said two bending punches, in which operative position a sheet may be bent around said counter-punch;
- pivoting drive means respectively coupled to the first and second of said three punches for pivoting the first and second bending punches to provide a bending force for bending the sheet around said counter-punch;
- and
- hinge means for pivotally connecting said two bending punches for relative movement about a hinge axis from a first position in which their sheet contact zones are aligned one to another and define a sheet bearing plane, to a second position in which their sheet contact zones define an angle therebetween;
- wherein respective tool segments of said two bending punches are connected to each other in pairs by hinge connections which together form said hinge means connecting said two bending punches, said hinge axis being offset from said sheet bearing plane, a depression being provided in each of said tool segments between the respective hinge connection and the respective sheet contact portion.
Dependencies are inferred from the claim text.