Patent DE-19922335-C1 (DE)
Title: Calender roller has roller shell mounted to end flange rings at roller journal with anchored axial lock and defined radial play to prevent overpressure on edges of paper web
Inventor: SVENKA PETER
IPC: F16C13/00
Filed: 1999-05-14
Granted: 2000-09-28
Abstract: The calender roller, for processing a web and preferably of paper, has a roller shell (1) flanged at one side to the roller core journal. The shell (1) is mounted at the end side through end fittings, radially limited at the flange rings (2) of the roller journal (3).  The fittings give an axial lock, with a radial play provided by an elastic material with elastic distortion. The connecting fittings have a sliding seat (4) with a straight guide at the side ends (5) of the roller shell (1) at the flange rings (2). Each sliding seat (4) has an elastic elastomer intermediate insert layer or ring compensating unit, between an end side (5) of the roller shell (1) and a flat guide or the inner flange wall (6) at the end side. The guide path at the sliding seat (4) is secured by anchors (7), which lock the ends (5) of the shell (1) with the flange rings (2) in a release mounting, to ride in closed radial guides in the flange rings (2) to give a restricted play against the flange rings when under load. The anchors (7) are screw bolts, screwed into the ends (5) of the shell (1) with a selected axial contact pressure for the ends of the shell against the inner flange walls (6). A number of sliding seats (4), equidistant round the circumference, lock the roller shell (1) with a flange ring (2). The closed guides are formed by bush guides or bushes (12) in axial passage drillings (8) at the flange ring (2), with a length matching the length of the spacer bolt (11) with the anchor (7). The bush guide (12) is of a material with elastic distortion to give the play with a pliability, to allow a limited radial shift movement by the anchors (7) against the flange rings (2). An elastomer compensation unit can be around the anchors (7) between the end side (5) of the roller shell (1) and the flange rings (2), with the drilling through it giving a total passage length in the length of the spacer (11) and anchor bolt (7). The anchor bolts (7) are screwed into the end sides of the roller shell (1), with their bolt heads (9) against the flange rings (2). A carrier ring can be fitted at the sides (6) of the flange rings (2) towards the roller shell (1), with drillings for the anchor bolts (7) to pass through with their spacer bolts, and a closed guide for the required radial play movements. The carrier ring is attached to the end side (5) of the roller shell (1) by an elastomer ring, with coaxial drillings as passages for the anchor bolts (7) and their spacers (11), to give an axial lock between the flange rings (2) and the roller shell (1). The other side of the carrier ring is bonded to the inner side wall (6) of the flange ring (2). The bush guide is of an elastic material, which is sufficiently pliable to give the required radial play for the anchor bolts (7) against the flange rings (2). The play between the roller shell (1) and the flange rings (2) is set so that the edge zones of the roller shell (1) automatically follow an ovalizing of 50-150  mu m.