Patent ID: 7188757
Filing Date: 2007-03-13
Classification: B65H

Abstract:
1. An expander roller arrangement for the wrinkle-free guidance of webs in closed chambers comprising two stationary cylindrical supporting bodies, which are connected at an obtuse angle with respect to one another through a coupling element in the proximity of a center plane (E—E) and with rollers, disposed thereon rotatably on roller bearings on both sides of the center plane (E—E), which have the form of truncated cone surfaces with shell lines (M 1 , M 2 ) and which during their rotation about the supporting bodies pass through positions in which said shell lines (M 1 , M 2 ) are aligned with one another, the surfaces of the rollers being disposed steplessly in line one with the other in succession, and the rollers being pivoted via roller bearings on the two supporting bodies in groups wherein the rollers on both sides of the center plane (E—E) each comprise at least two roller sections, surfaces of each group of roller sections being located in a common truncated cone surface and each of the roller sections being rotatable independently of one another, wherein the coupling element includes an annular flange with two flat side faces, which form an acute angle with one another and from which project two threaded connection fittings onto which are screwed the supporting bodies.