Drawings-in- of paper webs
First Claim
Patent Images
1. A method for drawing in a partial paper web in a printing press including;
- providing a plurality of laterally spaced partial paper webs;
providing a first movement path for said plurality of laterally spaced partial paper webs;
drawing in said plurality of laterally spaced partial paper webs next to each other in a production direction along said first movement path;
forming a line of separation in at least one of said plurality of partial paper webs, said line of separation extending transverse to said production direction;
providing a second movement path, different from said first movement path, for said plurality of laterally spaced partial paper webs;
moving said at least one of said plurality of partial paper webs with said formed line of separation before, in said production direction, said line of separation along said first movement path;
moving said at least one of said plurality of partial paper webs with said formed line of separation after, in said production direction, said line of separation along said second movement path;
separating said at least one of said plurality of partial paper webs in a direction transverse to said production direction along said line of separation in response to said movement of said at least one of said plurality of partial paper webs along both said first movement path and said second movement path;
forming a fresh partial paper web start in said at least one of said plurality of partial paper webs at said now separated line of separation; and
moving said at least one of said plurality of partial paper webs following said fresh partial paper web start along said second movement path different from said first movement path.
1 Assignment
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Accused Products
Abstract
A paper web is drawn into a printing and can be guided along a selected one of several paths. The paper web is weakened along a line of separation and is then held by a retaining system that can move the web in a conveying direction along a first path. The web is fed to a different conveying path and is separated ot torn along the line of separation. This line of separation or weakening is formed at an angle to the production direction.
82 Citations
18 Claims
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1. A method for drawing in a partial paper web in a printing press including;
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providing a plurality of laterally spaced partial paper webs;
providing a first movement path for said plurality of laterally spaced partial paper webs;
drawing in said plurality of laterally spaced partial paper webs next to each other in a production direction along said first movement path;
forming a line of separation in at least one of said plurality of partial paper webs, said line of separation extending transverse to said production direction;
providing a second movement path, different from said first movement path, for said plurality of laterally spaced partial paper webs;
moving said at least one of said plurality of partial paper webs with said formed line of separation before, in said production direction, said line of separation along said first movement path;
moving said at least one of said plurality of partial paper webs with said formed line of separation after, in said production direction, said line of separation along said second movement path;
separating said at least one of said plurality of partial paper webs in a direction transverse to said production direction along said line of separation in response to said movement of said at least one of said plurality of partial paper webs along both said first movement path and said second movement path;
forming a fresh partial paper web start in said at least one of said plurality of partial paper webs at said now separated line of separation; and
moving said at least one of said plurality of partial paper webs following said fresh partial paper web start along said second movement path different from said first movement path.
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2. A method for guiding a paper web including:
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providing a paper web;
providing an original movement track for said paper web;
drawing said paper web along said original movement track in a production direction;
forming a line of weakening in said paper web in a direction transverse to said production direction;
reducing the tear resistance of said paper web at said line of weakening;
providing a new movement track for said paper web, said new movement track being different from said original movement track;
guiding said paper web with said line of weakening, after, in said production direction, said line of weakening, onto said new movement track, different from said original movement track, by applying a force to one of an upper and a bottom surface of said paper web after, in said production direction, said line of weakening;
transversely separating said paper web, whose tear resistance has been reduced at said line of weakening, in response to said guiding of said paper web, after said line of weakening, to said new movement track;
forming a fresh end of said paper web and a fresh start of said paper web which has been transversely separated at said line of weakening;
moving said fresh start of said paper web along said new movement track; and
moving said fresh end of said paper web along said original movement track.
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3. A method for guiding a paper web including:
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providing a paper web;
providing a first movement direction for said paper web;
moving said paper web along said first movement direction;
weakening the tear resistance of said paper web along a tear line extending at an angle with respect to said first movement direction across said paper web;
providing a second movement direction for said paper web different from said first movement direction;
rerouting said paper web, after said tear line, into said second movement direction;
moving said paper web, after said tear line, along said second movement direction; and
separating said weakened tear resistant paper web at said tear line in response to said rerouting of said paper web, after said tear line, from said first movement direction to said second movement direction. - View Dependent Claims (4)
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5. A device for drawing in paper webs into a web-fed rotary printing press comprising:
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a first paper web movement path extending in a production direction;
a paper web tear resistance reducing device in said first movement path and transverse to said production direction and adapted to form a line of weakening in a paper web passing through said paper web tear resistance reducing device;
a second paper web movement path different from said first paper web movement path and extending in said production direction;
a suction station in said second paper web movement path, and after, in said production direction, said paper web tear resistance reducing device, said suction station having a plurality of suction sections; and
means providing suction air to each of said plurality of suction sections, said suction sections each being adapted to draw a paper web to said suction station and to separate a paper web at a line of weakening in response to movement of a paper web with a line of weakening along both said first paper web movement path and said second, different paper web movement path. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification