US 7,320,155 B2 | ||
Web buffering device | ||
Joachim Leger, Eberbach (Germany) | ||
Assigned to Oskar Dilo Maschinenfabrik KG, (Germany) | ||
Filed on Mar. 08, 2005, as Appl. No. 11/75,122. | ||
Claims priority of application No. 04005460 (EP), filed on Mar. 08, 2004. | ||
Prior Publication US 2005/0193526 A1, Sep. 08, 2005 | ||
This patent is subject to a terminal disclaimer. | ||
Int. Cl. D01G 25/00 (2006.01) |
U.S. Cl. 19—296 [19/161.1] | 22 Claims |
1. Apparatus for taking up a web material supplied at a take-up speed and for outputting the material at a discharge speed
which fluctuates with respect to take-up speed but on average matches the take-up speed, comprising:
two endless transport belts together defining a take-up site for receiving the web material therebetween and a discharge site
for outputting the web material, such transport belts being guided in juxtaposition between the take-up site and the discharge
site to substantially continuously clamp the web material between the belts, each transport belt including:
a feed section of varying length and having a substantially U-shaped feed path portion, the belts in such feed sections together
being guided over a first deflecting roller substantially half-wrapped by the belts, and
a return section of varying length, the belts in such return sections being separately guided from the discharge site to the
take-up site and each running through a substantially U-shaped return path portion extending opposite to the U-shaped feed
path portion and substantially half-wrapping one of second and third deflecting rollers, respectively; and
a common mounting frame rotatably supporting the three deflecting rollers and movable on a machine stand, the common mounting
frame moving substantially parallel to the U-shaped path portions,
whereby for each belt the length of the feed section varies with respect to the length of the return section and the web material
is protected through substantially the entirety of the transport path.
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