Post chill dancer roll

Details Post chill dancer roll Post chill dancer roll

1997-07-24

1999-07-27

Eickholt, Eugene

Printing

Rolling contact machines

Rotary

101225, 226 25, 226 45, B41F 504

Patent

active

059271965

ABSTRACT:
A device for controlling the tension in a web of a printing press includes an adjustably positionable dancer roll coupled to an air cylinder. The dancer roll engages the web at a position subsequent to the chill exit nip rolls and prior to a next nip roll pair, e.g., the slitter unit entrance nip rolls. The air cylinder applies a biasing force on the dancer roll to maintain contact between the dancer roll and the web. A control device is coupled between the dancer roll and the next nip roll pair. The control device monitors the position of the dancer roll and increases or decreases the speed of the next nip roll pair based on the direction and magnitude of the dancer roll movement. In this manner, the tension in the web is kept substantially constant between the chill exit nip rolls and the next nip roll pair.

REFERENCES:
patent: 3032245 (1962-05-01), George et al.
patent: 3556510 (1971-01-01), Treff
patent: 3975559 (1976-08-01), Paulson et al.
patent: 4366753 (1983-01-01), Glanz et al.
patent: 4452140 (1984-06-01), Isherwood et al.
patent: 5024156 (1991-06-01), Hank et al.
patent: 5361960 (1994-11-01), Fokos et al.
patent: 5647276 (1997-07-01), Tilton, Sr.

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