Adjustable ballast system for the holddown belt in a double facer
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United States of America Patent
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Nov 14, 1995
Grant Date -
N/A
app pub date -
Jun 3, 1994
filing date -
Jun 3, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A variable load ballast system for the double facer of a corrugator includes a number of rows of holddown belt engaging ballast members positioned in side-by-side relation transversely across the belt, with the rows extending over the full heating section of the double facer. Each of the rows is divided into a number of longitudinal segments, each of which segments is controlled by a vertical actuator to move the segment between a lower full load ballast position on the belt and an upper no load position off the belt. The rows may comprise a series of ballast rollers or a continuous flexible membrane and either embodiment provides the ability to vary the ballast load on the holddown belt longitudinally, laterally and in any pattern of symmetry or asymmetry to accommodate a wide range of operating conditions and problems typically arising in the operation of a double facer.
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