Rotatably supported roll
AssigneeBarmag AG
InventorsDietmar Jenke, Josef Majsai, Winfried Wubken
Life of this patent
Estimating the term…
Abstract
A rotatably supported roll (1), which is adapted to form a nip with a second roll, so as to advance therebetween a web of material. The load in the nip between the rolls can be controlled by an adjustable camber. To this end, an interior hollow space (13) is provided in the roll (1), which is filled with an incompressible pressure medium, and put under a controlled pressure, so as to cause the roll jacket (10/12) to bulge radially outwardly. This bulging can be significantly supported and influenced by a predetermined progression of the wall thickness of the jacket (10/12) in the axial direction of the roll.
Claims14
A roll adapted to form a nip with another roll in a film production line, and which is characterized by the ability to permit the nip to be readily adjusted, said roll comprising
- a pair of axially spaced apart end disks, with each of said disks including an outwardly extending axial journal,
- a jacket fixed between said disks so as to define a closed chamber therebetween and so that said journals are coaxially aligned, said jacket comprising a hollow interior member which includes a cylindrical exterior surface, and an exterior member coaxially surrounding said exterior surface of said interior member in a spaced apart arrangement so as to define an annular space therebetween.
- an incompressible liquid filling said chamber, and
- means for controllably pressurizing said liquid in said chamber so as to cause the jacket to radially bulge to a controlled extent, and comprising at least one axial opening extending axially through at least one of said disks, with said one opening including an internally threaded bore which communicates with said chamber, and a threaded plug threadedly mounted in said threaded bore in an axially adjustable manner so as to permit adjustment of the pressurization of the liquid in said chamber.
A roll adapted to form a nip with another roll in a film production line, and which is characterized by the ability to permit the nip to be readily adjusted, said roll comprising
- a cylindrical roll core,
- a pair or axially spaced apart end disks mounted on said core, and such that the axial end regions of the core extend beyond the respective end disks and form respective journals,
- a jacket fixed between said disks so as to define a closed chamber defined by said disks, said roll core, and said jacket, said jacket comprising a hollow interior member which includes a cylindrical exterior surface, and an exterior member coaxially surrounding said exterior surface of said interior member in a spaced apart arrangement so as to define an annular space therebetween,
- an incompressible liquid filling said chamber, and
- means for controllably pressurizing said liquid in said chamber so as to cause the jacket to radially bulge to a controlled extend.
A roll adapted to form a nip with another roll in a film production line, and which is characterized by the ability to permit the nip to be readily adjusted, said roll comprising
- a pair of axially spaced apart end disks, with each of said disks including an outwardly extending axial journal,
- a jacket fixed between said disks so as to define a closed chamber therebetween and so that said journals are coaxially aligned, said jacket comprising a hollow interior member which includes a cylindrical exterior surface, and an exterior member coaxially surrounding said exterior surface of said interior member in a spaced apart arrangement so as to define an annular space therebetween,
- an incompressible liquid filling said chamber, and
- means for controllably pressurizing said liquid in said chamber so as to cause the jacket to radially bulge to a controlled extent.
Dependencies are inferred from the claim text.