Control system for a draw-off system for sheet material

Details Control system for a draw-off system for sheet material Control system for a draw-off system for sheet material

1988-02-29

1990-04-24

Rolla, Joseph J.

Sheet feeding or delivering

Feeding

Separators

271152, B65H 708

Patent

active

049194127

ABSTRACT:
A control system for the pressing force created on the draw-off roller system (24) in a single-feed mechanism for sheet material (16) is described. This pressing force has an optimum value when the time required for the respective draw-off operation is the minimum amount. For a corresponding regulation, a time measurement is performed with successive draw-off operations. The times thus determined are evaluated, and if they are found to be the same, the value of the pressing force reached following regulation of a drive that produces the pressing force is retained.

REFERENCES:
patent: 3580566 (1971-05-01), Vasse
patent: 4302000 (1981-11-01), Frank
patent: 4317138 (1982-02-01), Bryan et al.
patent: 4566685 (1986-01-01), Irvine et al.
patent: 4589765 (1986-05-01), Perun et al.
patent: 4624454 (1986-11-01), Grutzmacher et al.

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