Winding – tensioning – or guiding – Convolute winding of material – With particular drive
Patent
1995-08-09
1997-07-08
Nguyen, John Q.
Winding, tensioning, or guiding
Convolute winding of material
With particular drive
2425423, B65H 1814, B65H 1826
Patent
active
056452454
ABSTRACT:
A center wind assist mechanism for use in a web winding device for winding a substantially continuous web onto a reel bar. The winding device incudes a driving drum that maintains a first nip engagement with the reel bar to rotate the reel bar and transfer the web passing over a surface of the driving drum onto the reel bar. The web winding device further includes a transfer mechanism for moving the reel bar from a primary winding position to a secondary winding position while maintaining the reel bar in nip driving engagement with the driving drum. The web winding device is characterized by a center wind assist mechanism for applying a driving torque to the reel bar as the reel bar moves from the primary winding position to the secondary winding position. The center assist winding mechanism includes a drive assist support arm pivotally mounted to the transfer mechanism to move therewith and pivot relative thereto. A driving wheel is rotatably connected the drive assist support arm. A drive mechanism and transmission mechanism cooperate to rotatably drive the driving wheel. A tensioning mechanism is connected to the transfer mechanism to maintain the driving wheel in driving and torque transfer relation with a peripheral surface portion of the reel bar. The center assist drive mechanism insures a more distributed nip pressure being applied across the web passing between the reel bar and winding drum during this initial phase of winding.
REFERENCES:
patent: 2865264 (1958-12-01), Moser
patent: 4358066 (1982-11-01), Deutschle et al.
patent: 4540131 (1985-09-01), Ishii et al.
patent: 4711404 (1987-12-01), Falk
patent: 5064131 (1991-11-01), Van Biesen et al.
patent: 5069394 (1991-12-01), Panttila et al.
patent: 5083719 (1992-01-01), Kremar
patent: 5375790 (1994-12-01), Svangvist
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