Paper web cutting device
AssigneeKoenig & Bauer Aktiengesellschaft
InventorLothar J. Wicha
Life of this patent
Estimating the term…
Abstract
A paper web cutting device utilizes a slit shaft that is positioned adjacent pair of cooperating cylinders and which has a slit through which a paper web passes. The shaft is rotatable to transversely sever the paper web which is then rolled on the slit shaft. The shaft can be displaced away from the printing couple in a direction opposite to the direction of web travel as the paper web builds up on the shaft. The accumulation of the web on the slit shaft prevents bunching of the web or the roll-up of the web on the printing cylinders.
Claims14
A paper web cutting device for the transverse cutting of a paper web in a web-fed rotary printing press comprising:
- first and second cooperating cylinders supported for rotation between spaced side frames and defining a paper web inlet wedge area;
- a slit shaft positioned in said inlet wedge area before, in a direction of paper web travel, said first and second cooperating cylinders, said slit shaft having a slit sized to allow passage of a paper web through said shaft;
- means for rotating said slit shaft to transversely cut a paper web passing through said slit and to wind a paper web on said slit shaft;
- and
- means for supporting said slit shaft between said side frames and for allowing said slit shaft to move out of said inlet wedge area in a direction opposite to said direction of paper web travel in response to accumulation of a paper web wound on said slit shaft.
Dependencies are inferred from the claim text.