Apparatus for handling stacks of flat articles such as bag-formi

Details Apparatus for handling stacks of flat articles such as bag-formi Apparatus for handling stacks of flat articles such as bag-formi

1977-03-30

1979-04-10

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

Separators

198461, 271 12, 271 31, 271155, 271157, 414121, B65H 308, B65H 118, B65H 354

Patent

active

041484738

ABSTRACT:
An apparatus and method for handling, separating and feeding gusset tubes from stacks thereof is provided which allows continuous, high speed separation and feeding of individual tubes without sagging or hangup problems, and at high operational speeds. The apparatus includes a pickup and feeding mechanism having tube-engaging arms, vacuum tube grippers for positively forming a bowed section in the tubes as they are lifted and upright stop structure for preventing shifting movement of the tube stack at the pickup station and separating any underlying tubes which may adhere to the topmost tube being fed. Stack elevating and lowering apparatus includes electrically controlled lifting mechanism having a pair of interconnected clutch elements for control of vertical movement. A conveying assembly having incrementally driven stack-supporting belts and pusher arms shiftable at a speed different than the belts serves to feed successive stacks to the pickup and feeding mechanism.

REFERENCES:
patent: 1029159 (1912-06-01), Westerbeck
patent: 2525189 (1950-10-01), Thomas
patent: 2588582 (1952-03-01), Sivertson
patent: 2588845 (1952-03-01), Kaderavek
patent: 2665633 (1954-01-01), Schubert
patent: 2912240 (1959-11-01), Frankle et al.
patent: 3201114 (1965-08-01), Swartz et al.
patent: 3638538 (1971-02-01), Sullivan
patent: 3887178 (1975-06-01), Fujimoto
patent: 4033578 (1977-07-01), Taylor et al.

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