Automatic roll-shifting roll stand

Details Automatic roll-shifting roll stand Automatic roll-shifting roll stand

1992-10-26

1994-02-01

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 586, B65H 1916

Patent

active

052825833

ABSTRACT:
A roll stand is designed to unwind a material web (60) to a printing machine (2) or other production machine from an unwinding roll (13) in the roll stand and for a stoppage-free automatic shifting to a new roll (5), when the unwinding roll has been emptied to the desired degree. In accordance with the invention, tension is detected in the material web, which while braked in the roll stand is fed into the production machine. Based on that detection, the power supplied to or from a power receiving or power supplying system is regulated in such a way that the tension in the material web, which is fed in to the production machine, is kept constant.

REFERENCES:
patent: 2196612 (1940-04-01), Scott
patent: 3236470 (1966-02-01), Huck et al.
patent: 3904142 (1975-09-01), Corse
patent: 4564150 (1986-01-01), Keene et al.
patent: 4673142 (1987-06-01), Keene et al.

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