Yarn carrier tubes
AssigneeSonoco Development, Inc.
InventorsBrian P. Couchey, Edmond Fratianni
Life of this patent
Estimating the term…
Abstract
The present disclosure is directed to a reusable yarn carrier tube around which yarn may be wound at high speeds (e.g., within winding machines). The yarn carrier tube may include a pick-up groove having structural features configured to better snag yarn to initiate winding of the yarn around the cylindrical body of the yarn carrier tube. The structural features may include an adaptable snagging feature that is adaptable to many different yarn types (e.g., diameter, denier, texture, material). The structural features may include projections (e.g., teeth) with incremental narrowing therebetween in the direction opposite to the rotational winding direction. The teeth may increase in sharpness (e.g., decreasing radii of curvature) as the yarn moves further into the pick-up groove.
Claims18
A reusable yarn carrier tube for winding yarns of various thicknesses thereon at high speeds as the carrier tube is rotated in a rotational winding direction, the carrier tube comprising:
- a hollow cylindrical wall;
- and
- a pick-up groove formed into the cylindrical wall and extending along the azimuthal direction of the cylindrical wall, the pick-up groove having at least a first sidewall and a second sidewall, wherein the pick-up groove comprises:
- a plurality of teeth projecting from the first sidewall and second sidewall of the pick-up groove toward a central azimuthal axis of the pick-up groove,
- wherein the distance between the first sidewall and the second sidewall decreases along the central azimuthal axis of the pick-up groove, wherein the plurality of teeth each project the same distance from the sidewall from which they project, and wherein each tooth in the plurality of teeth includes a leading edge facing the rotational winding direction, each leading edge having a degree of sharpness, and
- wherein the plurality of teeth comprises:
- a first tooth with a first degree of sharpness, and
- a second tooth with a second degree of sharpness, wherein the first degree of sharpness is less than the second degree of sharpness.
A reusable yarn carrier tube for winding yarns of various thicknesses thereon at high speeds as the carrier tube is rotated in a rotational winding direction, the carrier tube comprising:
- a circumferential wall;
- and
- a pick-up groove formed into and extending along the azimuthal direction of the circumferential wall, the pick-up groove having a sidewall, wherein the pick-up groove comprises:
- a plurality of teeth projecting from the sidewall of the pick-up groove toward a central azimuthal axis of the pick-up groove,
- wherein a first tooth of the plurality of teeth has a radially outward-facing surface angled toward a longitudinal central axis of the carrier tube at a first angle, wherein a second tooth of the plurality of teeth has a radially outward-facing surface angled toward the longitudinal central axis of the carrier tube at a second angle, and wherein the first angle is greater than the second angle.
Dependencies are inferred from the claim text.