Apparatus for separating and carrying off the topmost sheet of a

Details Apparatus for separating and carrying off the topmost sheet of a Apparatus for separating and carrying off the topmost sheet of a

1997-04-09

1999-11-23

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

Separators

271 98, 271106, 271108, B65H 312

Patent

active

059886269

ABSTRACT:
Apparatus for separating the topmost sheet from a stack of sheets with a suction belt conveyor disposed a short distance above the stack. The suction belt conveyor includes a suction box around which an endless suction belt is trained. In one corner the suction box has a lower resistance to air flow than in the rest of the suction box in order to unroll the top-most sheet by sucking it against the suction box. The lower resistance to air flow is obtained by disposing except in the said corner a plate at a short distance above the perforated base of the suction box. Near the corner of the suction box air is forced against the side of the stack in order to assist the unrolling suction operation. The suction belt is provided with peripheral ribs which deform the applied sheet in order to assist separation.

REFERENCES:
patent: 3595563 (1971-07-01), Rostoker
patent: 4345752 (1982-08-01), Nakamura et al.
patent: 4451028 (1984-05-01), Holmes et al.
patent: 4627605 (1986-12-01), Roller et al.
patent: 4662622 (1987-05-01), Wimmer et al.
patent: 5150892 (1992-09-01), Shimizu
patent: 5181706 (1993-01-01), Yamamoto et al.
patent: 5478066 (1995-12-01), Yoshida et al.
patent: 5707056 (1998-01-01), Rauen et al.

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