Zero force roll release for high speed press feed units

Details Zero force roll release for high speed press feed units Zero force roll release for high speed press feed units

1996-11-26

1999-11-30

Graysay, Tamara L.

Advancing material of indeterminate length

By intermittent material-mover

Comprising material-moving roll

226154, 226186, B65H 2000

Patent

active

059927224

ABSTRACT:
An apparatus for intermittently feeding a workpiece to a press, the device including a feed roll with a pinch roll opposite the feed roll, so that a workpiece may pass between the rolls. A servo screw, pinch roll actuator is connected to the pinch roll so that during apparatus operation, changes in pinch roll pressure may be developed between the pinch roll and the workpiece without causing loss of contact between the pinch roll and the workpiece. A new belt drive system and method of pinch roll control is also disclosed.

REFERENCES:
patent: 3964739 (1976-06-01), Garcia
patent: 4488688 (1984-12-01), Trubitsin et al.
patent: 4846388 (1989-07-01), Benbow
patent: 5000439 (1991-03-01), Yoshizawa
patent: 5129749 (1992-07-01), Sato
patent: 5150022 (1992-09-01), Waddington
patent: 5197645 (1993-03-01), Nordlof
patent: 5372321 (1994-12-01), Ohkubo et al.
patent: 5420678 (1995-05-01), Rasch et al.

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