Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1979-11-13
1981-05-05
McCarthy, Edward J.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
B65H 1920
Patent
active
042654092
ABSTRACT:
An apparatus that controls the swinging of a frame (50) and the rotation of a turret (52) in an automatic web rewinding machine. The frame (50) is pivotally mounted in the machine and a turret (52) including a plurality of rotatable mandrel assemblies (56) is mounted for rotation within the frame (50). The control apparatus includes an indexing device (66) having an output shaft (70) that undergoes intermittent rotation in response to continuous rotation of an input shaft (68). One drive means (80), coupled and responsive to the output shaft (70) of the indexing device (66) provides intermittent rotation of the turret (52). A second drive means (78) is provided to control the rotation of the cam (60) in order to minimize the overlap of the rotation of the cam (60) with the dwell time of the turret (52). The optimum condition occurs when the cam (60) rotates only when the turret (52) is indexing and when the cam (60) does not rotate at all while the turret (52) is dwelling. This optimum condition is achieved by having the second drive means (78) also coupled and responsive to the output shaft (70) of the indexing device (66) for providing the intermittent rotation of cam (60) in synchronism with the rotation of the turret (52).
REFERENCES:
patent: Re28353 (1975-03-01), Nystrand
patent: 2736508 (1956-02-01), Langbo
patent: 2769600 (1956-11-01), Kwitek
patent: 3116890 (1964-01-01), Nystrand
patent: 3179348 (1965-04-01), Nystrand
Cox Jon N.
Singh Balbir
Foley William J.
McCarthy Edward J.
Scott Paper Company
Yamaoka Joseph H.
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