Device for adjusting the phase of perforating devices as a function of the folding mode
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United States of America Patent
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Sep 13, 2005
Grant Date -
N/A
app pub date -
Jul 26, 2000
filing date -
Jul 26, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for perforating material webs by perforating tools accommodated on perforating cylinders and capable of producing perforations on copies in an exactly correct position with respect to cross-folds formed in the copies, the perforation position being adjustable during machine operation, the perforating tools being cooperatively related with associated perforating strips for producing transverse or cross-perforations, includes at least one perforating bar disposed coaxially with at least one of the perforating cylinders, the perforating tools and the perforating strips being accommodated on at least one of the perforating bars, the at least one of the perforating cylinders being adjustable relative to at least another of the perforating cylinders; a folder including the perforating device; and a pin-less folder including the perforating device.
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