Device and method for moving reels in an unwinder
First Claim
1. A device for moving paper reels in an unwinder of the type in which a nearly empty reel is moved along a predetermined path between operating stations in each of which the reel is free to rotate about a longitudinal reel axis thereof, the device being disposed and acting between the operating stations, the device comprising:
- a carriage for supporting a nearly empty reel, said carriage being mounted for movement such that said carriage is movable between one of said operating stations and another one of said operating stations, said carriage receiving said nearly empty reel at said one of said operating stations, said nearly empty reel being rotatable about said longitudinal reel axis on the carriage;
a structure supporting said carriage;
a means for moving said carriage between said operating stations; and
a means for controlling said means for moving the carriage, wherein said carriage comprises a first side and a second side, each of said first side and said second side comprising a brake and two wheels, said brake acting on said at least one of said wheels when said carriage is at said another one of said operating stations such that said brakes slow down the rotation of said reel about said longitudinal reel axis from a first rotational speed to a second rotational speed, said first rotational speed being greater than said second rotational speed.
1 Assignment
0 Petitions
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).
-
Citations
21 Claims
-
1. A device for moving paper reels in an unwinder of the type in which a nearly empty reel is moved along a predetermined path between operating stations in each of which the reel is free to rotate about a longitudinal reel axis thereof, the device being disposed and acting between the operating stations, the device comprising:
-
a carriage for supporting a nearly empty reel, said carriage being mounted for movement such that said carriage is movable between one of said operating stations and another one of said operating stations, said carriage receiving said nearly empty reel at said one of said operating stations, said nearly empty reel being rotatable about said longitudinal reel axis on the carriage; a structure supporting said carriage; a means for moving said carriage between said operating stations; and a means for controlling said means for moving the carriage, wherein said carriage comprises a first side and a second side, each of said first side and said second side comprising a brake and two wheels, said brake acting on said at least one of said wheels when said carriage is at said another one of said operating stations such that said brakes slow down the rotation of said reel about said longitudinal reel axis from a first rotational speed to a second rotational speed, said first rotational speed being greater than said second rotational speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An operating method executable during a change reel cycle in an unwinder, the method comprising the steps of:
-
providing a first station; providing a second station; providing a reel having an initial reel diameter; providing a carriage, said carriage being mounted for movement such that said carriage is movable between said first station and said second station, said carriage comprising a first side and a second side, said first side and said second side comprising a brake and a plurality of wheels; providing a new reel; rotating said reel about a longitudinal reel axis thereof until said reel has a predetermined reel diameter to form a nearly empty reel, said predetermined reel diameter being less than said initial reel diameter; transferring said nearly empty reel at a predetermined speed along a predefined path with said carriage from said first station to said second station; placing said new reel in said first station after transferring said nearly empty reel from said first station to said second station; controlling a rotational speed of said nearly empty reel by applying at least one of said brakes on one of said wheels after said nearly empty reel has been transferred to said second station such that said rotational speed of said nearly empty reel is decreased from a first rotational speed to a second rotational speed, said second rotational speed being less than said first rotational speed; rotating said nearly empty reel about said longitudinal reel axis until said nearly empty reel is exhausted to define an exhausted reel after said new reel is disposed in said first station. - View Dependent Claims (19, 20, 21)
-
Specification