B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
B41F 1/08 (2006.01) B41F 3/44 (2006.01) B41F 5/04 (2006.01) B65H 20/04 (2006.01) B65H 20/24 (2006.01)
Patent
CA 2175981
The invention refers to a feeding device for processing a web (3) in a station in which said web is in a standstill position, this device comprising a first drive cylinder (10) around which oscillates upstream then downstream a second swivel cylinder (20) fitted on two sidewise levers (52-53, 55) pivoting on the axle (12) of the said drive cylinder. The driving pinion (29) ofthe swivel cylinder (20) is geared with a toothed wheel (14) of equal diameter associated with the axle (12) of the drive cylinder. This device comprises moreover a counterweight (80) carried in rotation by a pinion (76) presenting a identical diameter with the one of the toothed wheel (14) of the axle (12) of the drive cylinder (10), with which wheel (14) this pinion (76) is geared as well, the said counterweight being fitted on an arm (70) pivoting around the axle (12) and connected by a mecanism (54, 60, 61, 62, 65) to the levers (52-53) in order to oscillate in the opposite direction of the swivel cylinder (20). The counterweight (80) presents moments of inertia with regard to its axis of central rotation and with regard to the axis of the arm (70) identical with those of the swivel cylinder (20).
Bobst S.a.
Smart & Biggar
LandOfFree
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