Method and apparatus for reeling control
2 Assignments
0 Petitions
Accused Products
Abstract
In a method and an apparatus for controlling reeling used in connection with the making of paper/board/some equivalent web-like material, a reeler is used in the reeling which has a reeling element (2), a reeling core (T), around which the web (W) is reeled to form a reel (3), as well as elements for loading the reeling core (T) and the reeling element (2) against each other in order to bring about a reeling nip (N) in between the reeling element (2) and the reel (3). The reeling is monitored by a detection apparatus, which automatically detects any events differing from normal reeling.
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Citations
40 Claims
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1-16. -16. (canceled)
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17. A method for controlling reeling in a reeler used to wind up a web being made, and traveling in a machine direction, the method comprising the steps of:
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winding a web being formed onto a reeling core, to form a reel by directing the web over a reeling element and in to a nip formed between the reeling element and the reel, and loading the reeling core and the reeling element against each other to form the nip;
monitoring the movement of the web into the nip with electromagnetic radiation using at least one device selected from the group consisting of;
a line camera, a digital camera, a video camera, a line laser, a distance-measuring laser(s) and a computer vision apparatus; and
automatically detecting at least one event deviating from normal reeling, in an area leading in to the nip selected from the group consisting of;
an interference in the shape of an airbag, superfluous objects appearing near the reeling nip, loose pieces of paper, or a double web edge, the web drifting into a wrong place, a piling up of the web, and a web split in the machine direction. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for controlling reeling in a reeler used to wind up a web being made, the method comprising the steps of:
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winding a web being formed onto a reeling core to form a reel by directing the web over a reeling element and in to a nip formed between the reeling element and the reel, and loading the reeling core and reeling element against each other to form the nip; and
illuminating a first side of the web as it approaches the reeling element before it moves into the nip with an electromagnetic radiation source which directs electromagnetic radiation at the web from the first side, and using at least one monitoring device to form an image of the web from a second side opposite the first side and the electromagnetic radiation source and to thereby detect any double edge in the web passing to the nip.
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33. An apparatus for controlling reeling in a reeler used to wind up a web being made, the apparatus comprising:
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a reeling element;
a reeling core, around which the web is reeled to form a reel, the reel forming a nip with the reeling element;
elements for loading the reeling core and the reeling element against each at the nip;
a monitoring device of the type for detecting electromagnetic radiation of a visible or invisible wave length, the monitoring device selected from the group consisting of a line camera, a digital camera, a video camera, a line laser, distance-measuring laser(s), and a computer vision apparatus;
wherein the monitoring device is arranged to view an area leading in to the nip; and
a means for automatic detecting in the area leading in to the nip, an airbag, superfluous objects appearing near the nip, a double web edge, a web drifting into a wrong place, piling up of the web, or a web split in the machine direction. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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Specification