Sheet-material associating – With printing – Associating and folding – with rotary printer
Reexamination Certificate
2000-01-27
2001-08-07
Eickholt, Eugene (Department: 2854)
Sheet-material associating
With printing
Associating and folding, with rotary printer
C270S038000, C270S047000, C101S232000, C271S182000
Reexamination Certificate
active
06270067
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to printing machines and more particularly to an apparatus for slowing down products in the folder of rotary printing machines.
2. Description of the Related Art
DD 246 006 A3 discloses an apparatus of the generic type having a decelerating-roller pair. At least one decelerating roller has a strip which cyclically groups the products at their trailing end along with the other decelerating roller. Additionally, in each case one transporting-roller pair is arranged upstream and downstream of the decelerating-roller pair, as seen in the transporting direction, and is driven at the speed of, and in sync with, the incoming products. At least one transporting roller of the downstream transporting-roller pair includes a transporting segment.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an apparatus for slowing down products in the folder of a rotary printing machine which can be adjusted in a straightforward manner and ensures that the products are slowed down in a functionally reliable manner upstream of the paddle wheel.
This and other objects are achieved in accordance with the invention by virtue of constant contact of the decelerating rollers of the product in conjunction with a speed profile for the decelerating rollers which is optimally coordinated with the decelerating process. The invention makes it possible for the products to be slowed down reliably and carefully and thus to be delivered by the paddle wheel with a higher level of accuracy. The deceleration of the products by one roller pair requires little adjustment outlay since there is no need to coordinate the speeds of the plurality of roller pairs.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of the disclosure. For a better understanding of the invention, its operating advantages, and specific objects attained by its use, reference should be had to the drawing and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
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Bergmann Stephan
Werner Ralf
Cohen & Pontani, Lieberman & Pavane
Eickholt Eugene
MAN Roland Druckmaschinen AG
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