B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
153/22
B21D 51/26 (2006.01) B21D 5/14 (2006.01)
Patent
CA 1266606
ABSTRACT OF THE DISCLOSURE: Apparatus and method for bending sheets, particularly for can bodies, each sheet having a front and rear edge. Plane, rectangular sheets are moved through between a driven bending roll and a plurality of back-up rolls and are bent round the bending roll by these rolls and a plurality of pressure rolls disposed behind the bending roll and back-up rolls. The almost completely rounded sheet is bent resiliently away from the bending roll by a deflecting member as a result of which the front edge of the sheet is prevented from re-entering the gap between the bending roll and the back-up rolls before the rear edge of the sheet has travelled through this gap. Then the deflecting member is moved back into its position of rest so that the front region of the sheet springs back in the direction of the bending roll and as a result is again gripped by the bending roll and the back-up rolls and moved through between them. When the front edge of the sheet has reached the gap between the last two pressure rolls, all the pressure rolls are lifted. Then the sheet is conveyed from a rounding station to a positioning station. The sheet continues to be rotated by the bending roll until its front edge is arrested by catching levers. The rounded sheet is now stripped axially off the bending roll.
511166
Locher Josef
Weil Wolfgang
Elpatronic Ag
Robic
LandOfFree
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