Profile cutting machine
AssigneeFecken-Kirfel GmbH & Co. Maschinenfabrik
InventorsJan Hackbarth, Claus Schiffler
Life of this patent
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Abstract
The contour cutting machine comprises an endless circulating bandknife (22) which is guided around bandknife pulleys (30-34). To allow adjustment of the cutting strand (23) in the Y-direction, the bandknife (22) forms two loops (28,36) merging into each other, one (36) of these two loops serving for length compensation. The bandknife pulley (30) arranged at the transition from the second loop (36) to the first loop (28) guides the bandknife (22) therearound at a looping angle of substantially 270° so that all of the bandknife pulleys (30-34) are contacted by the same surface of the bandknife (22). The bandknife (22) will always be bent in one direction only. By thus avoiding alternating bending directions, the lifespan of the bandknife (22) is lengthened.
Claims13
A contour cutting machine comprising a circulating endless bandknife (22) guided around a plurality of bandknife pulleys (30-34) and extending in two loops (28, 36) merging into each other, a first loop (28) being guided around two fixed bandknife pulleys (32, 33) and around two displaceable bandknife pulleys (30, 31) which are substantially simultaneously displaceable, and a second loop (36) being guided around a further bandknife pulley (34), characterized in that said endless bandknife (22) is guided at a looping angle of substantially 270° around one pulley (30) of the displaceable bandknife pulleys (30, 31) which connects the two loops (28, 36), and all bandknife pulleys (30-34) being contacted by the same surface of the endless bandknife (22).
Dependencies are inferred from the claim text.