Turret winder mandrel cupping assembly

A mandrel cupping assembly for releasably engaging the ends of a plurality of mandrels supported on a web winding turret assembly, the turret assembly comprising a plurality of mandrels extending parallel to a turret assembly central axis and driven in a closed mandrel path about the turret assembly central axis, the mandrel cupping assembly comprising:

• a cupping arm associated with each mandrel, each cupping arm having a mandrel cup for releasably engaging the end of a mandrel;
• a rotating cupping arm support, each cupping arm carried in a path about the turret assembly central axis on the rotating cupping arm support, each cupping arm supported by the rotating cupping arm support to permit rotation of the cupping arm relative to the rotating cupping arm support about a cupping arm pivot axis from a first cupped position wherein the mandrel cup engages a mandrel end to a second uncupped position;
• at least one cam follower supported on each cupping arm and pivotable about the cupping arm pivot axis;
• and
• at least one stationary cam surface engageable by the cam follower supported on the cupping arm for providing rotation of the cupping arm about the cupping arm pivot axis.