Stitching machine for variable size sheets
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United States of America Patent
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Nov 4, 2014
Issued Date -
N/A
app pub date -
Feb 23, 2012
filing date -
Feb 25, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A thread stitching machine to process signatures into book blocks includes a transport system for the signatures including a transport section on which the signatures are straddling for supply to a stitching station. The transport section includes an auxiliary saddle and a driven, continuously moving conveying chain to drive the auxiliary saddle. The conveying chain has spaced-apart, integrated pusher elements. A downstream installed stitching station includes a freely moving stitching saddle immediately following the auxiliary saddle. The stitching saddle includes a separate conveying device for the signatures, operated by a drive. A detection device is arranged at a transition between the auxiliary saddle and the stitching saddle to detect a position of the signature and a time which the signature passes by. The conveying chain is operated with a change in speed that depends on different sheet lengths following each other directly in a sequence of signatures.
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