Deflection compensating roll
AssigneeVoith Patent GmbH
InventorRolf Van Haag
Life of this patent
Estimating the term…
Abstract
A deflection compensating roller including a rotating roller casing, a rotationally fixed yoke axially extending through the roller casing, at least one hydrostatic support device arranged between the yoke and the roller casing, the at least one hydrostatic support device comprising a pressure compartment and at least one oil pocket that communicates with the pressure compartment via at least one first restricted flow zone and at least one second restricted flow zone, and a fluid comprising at least one of an electrorheological fluid (ERF) and a ferro fluid. A viscosity of the fluid is adapted to be varied by way of one of an electric and magnetic field. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
Claims26
A deflection compensating roller comprising:
- a rotating roller casing;
- a rotationally fixed yoke axially extending through the roller casing;
- at least one hydrostatic support device arranged between the yoke and the roller casing;
- the at least one hydrostatic support device comprising at least one oil pocket that communicates with a pressure compartment via at least one first restricted flow zone and at least one second restricted flow zone;
- a fluid comprising at least one of an electrorheological fluid (ERF) and a ferro fluid;
- and
- a device generating one of an electric and magnetic field structured and arranged to vary a viscosity of said fluid in at least one of the first and second restricted flow zones.
A deflection compensating roller comprising:
- a rotating roller casing;
- a rotationally fixed yoke;
- at least one hydrostatic support device arranged between the yoke and the roller casing;
- the at least one hydrostatic support device comprising a pressure compartment and at least one oil pocket that communicates with the pressure compartment via first and second restricted flow zones;
- a fluid comprising at least one of an electrorheological fluid (ERF) and a ferro fluid;
- and
- a device for generating a field arranged in at least one of:
- at least one of the first and second restricted flow zones;
- and
- a restricted flow zone arranged between a common supply line and the pressure compartment,
- wherein a viscosity of the fluid is varied by the device for generating a field in at least one of the first restricted flow zone, the second restricted flow zone, and the restricted flow zone arranged between the common supply line and the pressure compartment.
A method of using a deflection compensation roller rotating roller utilizing a rotating roller casing arranged on a rotationally fixed yoke to correct a web profile, the method comprising:
- arranging at least one hydrostatic support device between the yoke and the roller casing;
- feeding a fluid comprising at least one of an electrorheological fluid (ERF) and a ferro fluid to a pressure compartment and at least one oil pocket communicating with the pressure compartment via first and second restricted flow zones;
- and
- generating an electric or magnetic field in a restricted flow zone arranged between a common supply line and the pressure compartment and in at least one of the first and second restricted flow zones so as to vary a viscosity of the fluid in at least one of the first and second restricted flow zones.
Dependencies are inferred from the claim text.