ROLL SUPPORTING HUB

摘要

A roll supporting hub (10) is adapted for acceptance of a plurality of rolls (12) (one at a time), with each roll having a different predefined core width. The hub (10) includes a hub body (16) with a plurality of core support surfaces (28a, b, c, d) spaced circumferentially about a central rotation axis (15). One or more of those surfaces engage the core (14) of the roll to secure the roll (12) and hub (10) together for coupled rotation. A stop surface (44) on the hub body (16) engages a first radial side of the core (14), while radially retractable retainer surface (68) engages a second radial side of the core (14). The retainer surface (68) is secured to the hub body (16) in one of a plurality of possible predefined axially disposed positions relative to the stop surface (44), each of which corresponds to one of the predetermined core widths of the roll (12) being supported by the hub (10). The retainer surface (68) is supported by a spring (60) which is retractable within a slot (48a, b, c) extending axially between neighbouring support surfaces (28a, b, c, d) on the hub body (16).