Patent ID: 6874727
Filing Date: 2005-04-05
Classification: B21B,B65H

Abstract:
1. Device for guiding a band material running along a longitudinal axis and comprising at least two conical deflectors each having a narrow end and a wide end and arranged head to foot, the narrow end of one of the deflectors being situated on the same side, relative to the axis of the band, as the wide end of the other deflector, wherein each deflector comprises a fixed base whereon are mounted, in the manner of satellites, a plurality of guiding rolls distributed on a deviation angular sector of the deflector and mounted rotatably around axes forming the same angle (A) with an axis of the deflector, that the band is stressed on each deflector along a virtual conical surface going through an outer generatrix of each roll and that the axes of the deflectors are oriented relative to the longitudinal running axis of the band so that the band comprises successively, in the running direction, an upstream portion tangent to an input generatrix on a first deflector and having an axis perpendicular to said input generatrix, a central portion tangent, upwardly to an output generatrix of the first deflector and, downwardly, to an input generatrix on the second deflector and having a longitudinal axis perpendicular to said generatrices, respectively the output generatrix and the input generatrix, and a downstream portion tangent to an output generatrix of the second deflector and having a longitudinal axis perpendicular to said output generatrix.