Edge guide unwinding apparatus

Winding – tensioning – or guiding – Coil holder or support – Spool or core

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Details

226 19, B65H 2526

Patent

active

044614314

ABSTRACT:
An apparatus for monitoring and correcting deviations in the transverse position of a longitudinally traveling web of material as it unwinds from a supply roll of material includes a cradle unwinder for supporting the supply roll and unwinding the web from the supply roll. The cradle unwinder is mounted for movement in the transverse direction of the moving web and includes a reversible motor for causing the cradle unwinder to move transversely. A web edge detector device is located downstream of the cradle unwinder to monitor the transverse position of the moving web. As deviations in the transverse position of the web occur, the edge detector sends a signal energizing the motor causing it to turn in one direction or the other to in turn cause the cradle unwinder to move transversely in a direction to correct the transverse deviation in the position of the moving web. The cradle unwinder also includes a movable device for adapting the cradle unwinder to support supply rolls of material of different widths.

REFERENCES:
patent: 2078669 (1937-04-01), King
patent: 2078699 (1937-04-01), Taylor et al.
patent: 2641416 (1953-06-01), McCleary
patent: 2672300 (1954-03-01), Hogan
patent: 2860841 (1958-04-01), Jacobsen
patent: 3310942 (1967-03-01), Stanford
patent: 3559859 (1968-10-01), McArthur
patent: 3570723 (1971-03-01), Kurz
patent: 3599849 (1971-08-01), Callan
patent: 3931940 (1976-01-01), Raighn et al.
patent: 3955772 (1976-05-01), Chisholm
patent: 4106715 (1978-08-01), Pisani

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