Method and apparatus for regulating winding of a web
AssigneeValmet Corporation
InventorsArto Leskinen, Pertti Vainio
Life of this patent
Estimating the term…
Abstract
A method of regulation in winding, wherein a number of separate rolls are formed around separate roll cores situated one after another and side by side while being supported by support members and loaded by linear loads produced by truncated rolls in a set of truncated press rolls. The distance at each particular time between at least one truncated roll in the set of truncated press rolls and a beam that loads the set of truncated press rolls is measured. Based on the measured distance, a measurement signal is passed to a regulator which provides a regulation signal to valves that control actuators of the beam so as to adjust the distance between the beam and the set of truncated press rolls to the desired value.
Claims8
In a method for regulating winding of a material web in which a plurality of separate rolls are formed around separate roll cores arranged one after another and side by side, each roll being supported by support members and loaded by linear loads produced by truncated rolls in a set of truncated press rolls, a beam being provided to load the truncated press rolls, the position of the beam relative to the rolls being adjustable, the method comprising the steps of.
- measuring a distance between at least one of the truncated rolls and the beam,
- generating a measurement signal based on the measured distance between said at least one truncated roll and the beam,
- passing the measurement signal to a regulator,
- generating a regulation signal in the regulator for controlling actuators of the beam which are operable to adjust the position of the beam in order to provide a desired distance between the truncated rolls and the beam, and
- passing the regulation signal to valves that control the actuators of the beam so as to adjust the distance between the truncated rolls and the beam to the desired distance.
In an apparatus for winding a material web in which a plurality of separate rolls are formed around separate roll cores arranged one after another and side by side, each roll being supported by support members and loaded by linear loads produced by truncated rolls in a set of truncated press rolls, a beam being provided to load the truncated press rolls, the position of the beam relative to the rolls being adjustable, the improvement comprising
- measurement means for measuring the distance between at least one of the truncated rolls and the beam, said measurement means being structured and arranged to generate a measurement signal based on the measured distance between said at least one truncated roll and the beam,
- actuators associated with the beam for adjusting the position of the beam,
- valves for controlling the operation of said actuators, and
- regulation means for receiving the measurement signal and generating a regulation signal for setting said valves.
Dependencies are inferred from the claim text.