Patent DE-102006021609-A1 (DE)
Title: Widely stretchable roller for use in the manufacture of paper or cardboard webs, comprises a roller pipe consisting segments, an axial body attached to an end of the roller pipe in torque proof manner, and a coupling tool
Inventor: MAMCZAK ARKADIUSZ
IPC: B65H27/00
Filed: 2006-05-09
Abstract: The widely stretchable roller for use in the manufacture of paper or cardboard webs, comprises a roller pipe consisting segments, axial body attached to an end of the roller pipe in a torque proof manner, and a coupling tool for transferring the rotation into the roller pipe segments (2) and into an inset piece for taking bearings provided between the roller pipe segments and means for sealing the bearings with reference to the environment. The roller pipe is rotatable, continuous and curved. The roller pipe segments on the axial body can be turned by the coupling tool. The widely stretchable roller for use in the manufacture of paper or cardboard webs, comprises a roller pipe consisting segments, axial body attached to an end of the roller pipe in a torque proof manner, and a coupling tool for transferring the rotation into the roller pipe segments (2) and into an inset piece for taking bearings provided between the roller pipe segments and means for sealing the bearings with reference to the environment. The roller pipe is rotatable, continuous and curved. The roller pipe segments on the axial body can be turned by the coupling tool. A first inset piece (3) is arranged as a disk with a cross-sectional area in the form of two adjacently lying U. The distance of the two inner, oppositely lying U-shanks is greater than the diameter of the axle body. The areas tuned away from the axle body of the oppositely facing inner U-shank and the outer U-shank connected with the roller pipe segment in force-, positive- and material fit consists of a bearing seat. A second inset piece (8) is formed as a disk with an U-shaped cross sectional area and is attached to the axle body. The inner sides of the U-shanks have a bearing seat (5) and a detachable counter-bearing disk is provided on the outer end of the U-shank. A sealing agent is provided between the counter bearing disk and the inner, oppositely-lying shanks of the first inset piece. A ball bearing (13) is taken from the bearing seat in the inset pieces in such a way that during operation, the outer ring of the bearing stands firmly and the inner ring of the bearing rotates. For forming the bearing seat, the inner U-shanks of the first inset piece and the U-shanks of the second inset piece intertwine with each other and lie opposite to each other at a distance that is determined by the mass of the bearing. The counter bearing disk (11) consists of oblique surface section on its side arranged to the bearing, so that a chamber can be built. A section that is free of oblique surfaces locks laterally, the outer shell of the bearing. The counter bearing disk is fixed on a safety ring on the second inset piece. A seal ring is arranged between the counter bearing disk and the second inset piece and therefore the counter bearing disk has a circulating outer nut. The counter surface disk has an inner slot for taking a sealing felt (12) as a sealing agent for the purpose of providing a sealing opposite to the inner shanks of the first inset piece. In the intersection area of the U-shanks of the second inset piece, a chamber building oblique surface section is arranged. The section that is free of oblique surfaces locks a side of the bearing outer shell and the bearing outer ring against the counter bearing disk. Thread longitudinal bores are provided in the inner shanks of the first inset piece and serve for the purpose of fastening a bearing pressure ring with the help of a screw joint. A sealing agent as ring shaped sealing felt is arranged between the radial-outer circumference of the bearing pressure ring and the inner side of the second inset piece that is opposite to the bearing pressure ring. The sealing agent is led into and then included into the inner ring slot of the second inset piece. Bore holes or continuous openings are introduced in a connection section of the U-shanks of the second inset piece and are included to guarantee an entry into the thread longitudinal bores. The outer U-shanks of the first inset piece in relation to the roller segment endure in a longitudinal direction of the roller and have a conical tapering in its free end. A hole is included in the outer U-shank of the first inset piece and is provided for taking a coupling bolt. The coupling bolt intervenes in a socket that is kept near the longitudinal direction of the roller. The coupling bolt also intervenes into a roller segment, which is connected to a blind hole bore. The chambers receive lubricating agents from the bearing and while turning feeds back the lubricating agents into the bearing. The inset pieces, counter bearing disks as well as the bearing pressure ring are carried out as a rotationally symmetrical parts.