Wrapping device for a machine for winding-up a web material, and a machine for winding-up a web material including the wrapping device
AssigneeRoll-O-Matic A/S
InventorsJohn Buk Jensen, Mads Sandahl Christensen
Life of this patent
Estimating the term…
Abstract
The invention relates to a wrapping device (300) for wrapping a band around a wound up roll (5″), characterised in:—a storage (301) for said band (303) to be wrapped around said wound up roll (5″),—a first conveyor (330) positionable adjacent said wound roll (5″), for conveying said band (303) to said roll (5″),—said first conveyor (330) comprising a cylindrical drum configured for rotation about an axis (W),—said drum (330) having a surface configured for receiving and transferring said band (303) to said wound up roll (5″) by a vacuum applied to said band (303) via apertures (331) formed in said surface.
Claims19
A wrapping device for wrapping a band around a roll formed by winding up a length of a web, or interleaved sections of a length of a web, said wrapping device comprising:
- a storage for a band to be wrapped around a formed roll;
- a conveyor positionable adjacent said formed roll, for conveying said band to said formed roll, said conveyor comprising:
- a cylindrical drum configured for rotation about an axis (W), said cylindrical drum comprising a surface configured for receiving and transferring said band to said formed roll by a vacuum applied to said band via apertures formed in said surface;
- a pivot frame pivotally connected to a conveyor frame comprising said cylindrical drum;
- an actuator configured for turning said pivot frame between an active and an inactive position relative to said conveyor frame, said pivot frame comprising a roller and elastic belts acting to guide said band being transferred to said formed roll when said pivot frame is in said active position;
- a core surrounded by a tubular casing defining said cylindrical drum;
- and
- a drive for rotating said tubular casing relative to said core, only some of said apertures applying said vacuum at a given time, wherein application of said vacuum being controlled by rotation of said tubular casing relative to said core.
A roll making apparatus including a roll wrapping device, said roll making apparatus comprising:
- a frame comprising
- a first conveyor for advancing a length of a web, or interleaved sections of a length of a web, along a direction to be wound-up as a roll;
- a subsection comprising:
- a spindle support mounted to rotate and carrying a plurality of parallel elongated spindles, each of said plurality of parallel elongated spindles mounted for rotation about a respective axis relative to said first spindle support, for winding up thereon said length of said web, or interleaved sections of said length of said web, to form said roll said rotation of said spindle support and of each of said plurality of parallel elongated spindles being about a respective first axis (W) perpendicular to, or essentially perpendicular to, said direction of said advancing;
- said plurality of parallel elongated spindles being movable between a retracted position, with a respective distal end thereof closer to said spindle support, and an extended position, each of said plurality of parallel elongated spindles carrying said roll being positionable by rotation of said spindle support in a wrapping position located next to said wrapping device;
- wherein said roll wrapping device comprises:
- a storage for a band to be wrapped around said roll;
- a second conveyor positioned adjacent said roll, for conveying said band to said roll, said second conveyor comprising a cylindrical drum configured for rotation about a second that is parallel with said first axis (W) of rotation of said spindle carrying said roll, said cylindrical drum comprising a surface configured for receiving and transferring said band to said roll by a vacuum applied to said band via apertures formed in said surface.
A roll making apparatus including a roll wrapping device, said apparatus comprising;
- a frame comprising:
- a feed conveyor for advancing a length of a web, or interleaved sections of a length of a web, along a direction to be wound-up as a roll;
- a spindle support carrying an elongated spindle mounted for rotation about an axis (W) perpendicular to, or essentially perpendicular to, said direction of advancing, for winding up thereon said length of said web, or interleaved sections of said length of said web, to form said roll;
- a wrapping device comprising:
- a storage for a band to be wrapped around said roll;
- a conveyor positioned adjacent said roll, for conveying said band to said roll, said conveyor comprising a cylindrical drum configured for rotation about an axis parallel with said axis (W) of rotation of said spindle support carrying said roll, said cylindrical drum comprising a surface configured for receiving and transferring said band to said roll by a vacuum applied to said band via apertures formed in said surface, said cylindrical drum configured to be movable into a position next to said spindle support carrying said roll, for wrapping said band around said roll, said cylindrical drum and said spindle support configured for rotating in opposite directions.
Dependencies are inferred from the claim text.