Sheet-seeking suction foot for combined sheet separation and for

Details Sheet-seeking suction foot for combined sheet separation and for Sheet-seeking suction foot for combined sheet separation and for

1984-07-02

1986-04-08

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

Separators

271107, B65H 308

Patent

active

045807736

ABSTRACT:
This suction foot or "sheet sucker" has a cylinder and a hollow piston fitted in the cylinder. The piston has a piston rod whose tip protrudes downwardly from the cylinder to apply suction to the top sheet of stock in a small press. The cylinder is supported from and moved by a hollow support rod that is connected with the suction system of the press. The piston and rod are spring-loaded upward relative to the cylinder. The hole in the support rod communicates with a point in the cylinder cavity below the piston. Applied suction consequently draws the cylinder and rod downward, against the spring action, in effect telescoping the suction foot tip outwardly toward the stock. When a sheet of stock closes the bottom end of the hollow piston and rod, pressure on the cylinder is equalized and the suction foot tip retracts, raising the stock for travel into the press. The necessary air communication is effected by several fine air passageways in the cylinder side wall and top wall.

REFERENCES:
patent: 2341521 (1944-02-01), Baker et al.

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