DEVICE AND METHOD FOR MOVING REELS IN AN UNWINDER
First Claim
1. Device for moving paper reels in an unwinder of the type in which a nearly empty reel is moved along a predetermined path between more operating stations in each of which the reel is free to rotate about its longitudinal axis, the device being disposed and acting between the operating stations and comprising:
- a carriage intended to support a nearly empty reel and movable between said operating stations, the reel being free to rotate about its longitudinal axis on the carriage;
a structure supporting said carriage;
means for moving said carriage between said operating stations;
means for controlling said means for moving the carriage, wherein said carriage is provided on each of its sides with a brake and two wheels, said brake acting on said wheels for slowing down the rotation of said reel about the longitudinal axis thereof.
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Accused Products
Abstract
Device for moving paper reels in an unwinder of the type in which a nearly empty reel (1) is moved along a predetermined path between more operating stations in each of which the reel (1) is free to rotate about its longitudinal axis. The device is disposed and acting between the said operating stations and comprises: a carriage (4) intended to support a nearly empty reel (1) and movable between said operating stations, the reel (1) being free to rotate about its longitudinal axis on the carriage (4); a structure (5) supporting said carriage (4); means for moving said carriage (4) between said operating stations; means for controlling said means for moving the carriage (4).
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Citations
21 Claims
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1. Device for moving paper reels in an unwinder of the type in which a nearly empty reel is moved along a predetermined path between more operating stations in each of which the reel is free to rotate about its longitudinal axis, the device being disposed and acting between the operating stations and comprising:
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a carriage intended to support a nearly empty reel and movable between said operating stations, the reel being free to rotate about its longitudinal axis on the carriage; a structure supporting said carriage; means for moving said carriage between said operating stations; means for controlling said means for moving the carriage, wherein said carriage is provided on each of its sides with a brake and two wheels, said brake acting on said wheels for slowing down the rotation of said reel about the longitudinal axis thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. Operating method executable during a change reel cycle in an unwinder, the method comprising:
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a step of transferring a nearly empty reel from a station in which the reel rotates about its own longitudinal axis until the attainment of a condition of incipient exhaustion to a station in which it can continue to rotate about its longitudinal axis until the complete exhaustion, that is, until a new reel is disposed in the first station to replace the nearly empty reel, said transferring step being executed at a predetermined speed along a predefined path; a step of controlling of the rotational speed of said nearly empty reel, wherein said step of controlling the rotational speed of the nearly empty reel is executed at the end of said transferring step by lowering the rotational speed of the nearly empty reel. - View Dependent Claims (19, 20, 21)
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Specification