Method for calculating and regulating the elongation of a moving

Details Method for calculating and regulating the elongation of a moving Method for calculating and regulating the elongation of a moving

1996-04-08

1998-01-20

Mansen, Michael

Advancing material of indeterminate length

Processes

Involving plural feeding means

226 42, 36446901, B65H 2318, G06F 1900

Patent

active

057093318

ABSTRACT:
A method for measuring and regulating the elongation of a moving material web that includes the steps of measuring the length change or speed change occurring over a drive roller, from which the elongation is calculated and, if it deviates from the desired elongation, the web tension is corrected in order to set the elongation. Such a method is preferably used in a web tension device disposed between a roll exchanger and a printing press. The web tension is preferably adjusted through the use of a dancer roller, whose force exerted on the material web is regulated by a controlled dancer cylinder.

REFERENCES:
patent: 2999295 (1961-09-01), Manning et al.
patent: 3610496 (1971-10-01), Parker
patent: 4033492 (1977-07-01), Imai
patent: 4369906 (1983-01-01), Isherwood
patent: 4572752 (1986-02-01), Jensen et al.
patent: 4848630 (1989-07-01), Niestrath et al.
patent: 5485386 (1996-01-01), Andersson
Patent Abstracts of Japan vol. 12 No. 160 (M-697), May 14, 1988 & JP,A,62 279057 (Kawasaki Steel Corp) Dec. 3, 1987.
Patent Abstracts of Japan vol. 7, No. 269 (M-259), Nov. 30, 1983 & JPA,A,58 148147 (Tokyo Shibaura Denki KK) Sep. 3, 1983.
Patent Abstracts of Japan vol. 16 No. 287 (M-1271), Jun. 25, 1992 & JP,A,04 075953 (Mitsubishi Heavy Ind Ltd) Mar. 10, 1992.

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