Apparatus for automatically inverting workpieces of limp sheet m

Details Apparatus for automatically inverting workpieces of limp sheet m Apparatus for automatically inverting workpieces of limp sheet m

1990-07-16

1991-08-20

Skaggs, H. Grant

Sheet feeding or delivering

Delivering

Optional face or back

271 183, 271186, 271198, 198403, 198380, B65H 2966

Patent

active

050407783

ABSTRACT:
Apparatus is disclosed for automatically inverting workpieces of limp sheet material, such as fabric sheet material. The apparatus includes an endless conveyor having a forward-traveling upper reach for conveying workpieces in a forward direction. A gripper grasps a portion of the workpiece adjacent its leading edge as the workpiece travels on the conveyor, and lifts the leading edge portion of the workpiece off the conveyor. The gripper holds the leading edge portion stationary with a trailing portion of the workpiece extending downwardly from said pick-up means. A pushing mechanism acting on a generally rearwardly facing surface of the trailing portion of the workpiece pushes the trailing portion forwardly to effect complete inversion of the trailing portion as the leading edge portion is held stationary by the gripper. The gripper releases the leading edge portion of the workpiece after the trailing portion of the workpiece has been inverted. The leading edge of the workpiece drops to the conveyor so that the trailing edge of the workpiece leads the remaining portions of the workpiece and the leading edge trails the remaining portions of the workpiece.

REFERENCES:
patent: 3034632 (1962-05-01), Wampler
patent: 3198513 (1965-08-01), Farez
patent: 3355165 (1967-11-01), Southwell et al.
patent: 3370849 (1968-02-01), Martin
patent: 3549145 (1970-12-01), Trautmann
patent: 3603587 (1971-09-01), Van Dorst
patent: 4020941 (1977-05-01), Kennedy
patent: 4027580 (1977-06-01), Sundin
patent: 4175655 (1979-11-01), Baldwin
patent: 4583727 (1986-04-01), Fort

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