Conveyors for box making machines
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Feb 1, 2022
Grant Date -
Jul 19, 2018
app pub date -
Jan 16, 2018
filing date -
Jan 16, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vacuum belt conveyor sequentially delivers sheet articles to a digital printer. The sheets are held in position by vacuum on the underside of the sheets through apertures in the belts and covered by the sheets. A plurality of independent plenums on the underside of the belt have chambers respectively communicating with rows of apertures extending along the belt. Vacuum is selectively applied from a manifold only to the plenum chambers that supply apertures that are covered by the sheets so that the ink from the printer will not be directed from its intended position on the sheet by vacuum from adjacent uncovered belt apertures. The sheets are fed to the conveyor in synchronism with the conveyor speed by a timed feeder so that the sheets are carried by the conveyor with a predetermined gap between the sheets and no belt apertures in the gap. A sensor counts the apertures in the belt and activates the feeder at predetermined time intervals.
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