Sheet feeding mechanism

Details Sheet feeding mechanism Sheet feeding mechanism

1975-03-24

1977-03-01

Saifer, Robert W.

Sheet feeding or delivering

Feeding

Separators

271108, 271132, 271144, B65H 312

Patent

active

040098761

ABSTRACT:
A mechanism for feeding blanks of corrugated cardboard and the like into a printing and container forming machine. The feeding mechanism includes a perforated suction head for moving individual sheets from a stack of sheets into the machine. The suction head includes a perforated plate and plenum chamber mounted on a tubular member which is telescopingly received over an open ended tubular support member, mounted on a hollow reciprocating shuttle. A valve is disposed at the shuttle end of the tubular support for connecting the shuttle to an evacuator and is actuable by a cam contoured such that the valve is actuated each time the suction head cycles. The blanks are supported with their forward ends at the shuttle and at their opposite ends by a universally adjustable support which compensates for warped blanks. A dump valve for venting the shuttle to atmosphere is operable in timed relation to the vacuum valve by means of a linear cam located adjacent the shuttle.

REFERENCES:
patent: 1999836 (1935-04-01), Guilbault
patent: 2956804 (1960-10-01), Ridenour
patent: 3226108 (1965-12-01), Bishop
patent: 3726454 (1973-04-01), Robbins
patent: 3874655 (1975-04-01), Allen et al.

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