| 主权项 |
1. A web rewinding apparatus comprising:
a turret winder comprising:
a rotatably driven turret assembly supported for rotation about a central axis, said turret assembly supporting a plurality of rotatably driven mandrels, each of said mandrels being capable of engaging cores upon which a web material is convolutely wound thereabout, each of said mandrels being carried in a closed mandrel path about said central axis, each of said plurality of mandrels extending from said turret assembly at a first mandrel end and having a second unsupported end and having a mandrel axis generally parallel to said central axis, each of said plurality of mandrels being supported upon said turret assembly at said first mandrel end for independent rotation of said mandrel about said mandrel axis; and, a mandrel cupping assembly for releaseably engaging said unsupported end, said mandrel cupping assembly comprising:
a cupping spider having a cupping spider axis;a mandrel cup cooperatively associated with each mandrel of said plurality of mandrels, each of said mandrel cups being disposed radially about said cupping spider, each of said mandrel cups comprising a pair of cupping arms configured as a first-class double-lever with a pivot acting as a fulcrum;at least three motion limiting devices disposed upon said cupping arms distal from said fulcrum;wherein each of said mandrel cups is capable of releaseably engaging said unsupported end of said mandrel cooperatively associated thereto, each of said mandrel cups having a hold-open position and a hold-closed position, each of said mandrel cups being carried in a radial orbital path about said cupping spider central axis while disposed in either of said hold-open position or said hold-closed position; a first actuator for disposing said cupping arm from said hold-open position to said hold-closed position; and, a second actuator for disposing said cupping arms from said hold-closed position to said hold-open position. |
