Rotary collating and/or inserting machines and method of collating and/or inserting sheet material
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United States of America Patent
Stats
-
Aug 27, 1985
Grant Date -
N/A
app pub date -
Dec 22, 1982
filing date -
Dec 24, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a rotary collating and/or inserting machine where individual sheets are peeled from the bottom of a plurality of stacks of sheets arranged spaced around a circle on a table and are moved down through one or more radial slots in the table, the separation of the bottom sheet of each stack, preferably at a corner, is initiated by creating changes in air pressure in a cyclically controlled manner at or adjacent to the upper region of at least one slot. This can be accomplished by the provision of suction holes along the length of at least one slot or by changing the contour of the table surface, such as by incorporating a bellows. To aid onward movement of a sheet into a slot after initial separation from the stack, the initial suction effect which either acts directly on the sheet or changes the contour of the table surface is shut off or reversed as the bottom sheet passes down through the slot. Cyclically controlled suction devices are preferably provided at or adjacent to the lower region of each slot.
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