AN IMPROVED SHAFT FOR SUPPORTING CUT SECTIONS OF A REEL IN A CUTTING AND WINDING MACHINE

摘要

The shaft (24) comprises: a cylindrical body (30) having at least one cavity (32) on its outer surface accommodating a resilient envelope (36) connectable to a source of fluid under presure; a plurality of first annular members (38) disposed coaxially along the body (30); a plurality of second annular members (40) disposed along the body (30), coaxially and radially outwardly of the first annular members (38), there being formed between at least one second (40) and one first (38) annular member at least one seat accommodating an engagement element (52) capable of projecting radially from the outer surface of the second annular member (40) upon relative rotation of the first annular member (38) with respect to the second annular member (40), and of applying a localised pressure to the facing inner surface of one of the cores (26) about which a cut section is wound.