Web turn-up cutting apparatus and method
AssigneePaprima Industries Inc.
InventorDieter H Hilker
Life of this patent
Estimating the term…
Abstract
A web turn-up cutting method and apparatus for severing a continuous web has a water jet controller adapted to activate a water supply of first and second water nozzles and a carriage controller adapted to actuate the nozzle carriages to provide a transversal movement of the first and second water nozzles. The first and second nozzles are adapted to define together a substantially X-shaped cut on the traveling continuous web defining at least a substantially V-shaped tail for ending a forming roll, an opposite substantially V-shaped start for starting a new spool, a detachable first wing and a detachable second wing.
Claims19
A web turn-up cutting apparatus for severing a continuous web that is traveling in a travel direction, the apparatus comprising:
- a first nozzle connectable to a first water supply hose and adapted to produce a first water cutting jet and a second nozzle connectable to a second water supply hose and adapted to produce a second water cutting jet, the first nozzle and the second nozzle each being mountable on respective nozzle carriages and being transversely movable with respect to the travel direction of the continuous web;
- a jet controller adapted to activate a water supply of the first water supply hose for the first nozzle to produce the first water cutting jet and to activate a water supply of the second water supply hose for the second nozzle to produce the second water cutting jet;
- and
- a carriage controller adapted to actuate the nozzle carriages to provide a transversal movement of the first nozzle and of the second nozzle;
- wherein the first nozzle and the second nozzle define together a substantially X-shaped cut on the traveling continuous web, the substantially X-shaped cut defining at least a substantially V-shaped tail for ending a forming roll, an opposite substantially V-shaped start for starting a new spool, a detachable first wing and a detachable second wing.
A method of controlling a first nozzle carriage and a second nozzle carriage in a web turn-up cutting apparatus of a papermaking machine, each of the first and second nozzle carriages being adapted to provide a transversal movement to a respective first nozzle and second nozzle with respect to a traveling direction of a paper web, the method comprising:
- positioning the first nozzle carriage near a first edge portion of the paper web;
- positioning the second nozzle carriage near a second edge portion of the paper web;
- displacing the first nozzle carriage from near the first edge portion of the paper web to near a center portion of the paper web and defining at least in-part a V-shaped tail for ending a forming roll and in-part a first detachable wing, when a water supply to the first nozzle is activated;
- displacing the second nozzle carriage from near the second edge portion of the paper web to near a center portion of the paper web and defining at least in-part the V-shaped tail and in-part a second detachable wing, when a water supply to the second nozzle is activated;
- moving one of the first and second nozzle carriage from near the center portion of the paper web to near the first edge portion of the paper web and defining at least in-part a V-shaped start for re-threading a new spool and in-part one of the first and second detachable wings, when a water supply to the respective nozzle is activated;
- and
- moving another one of the first and second nozzle carriage from near the center portion of the paper web to near the second edge portion of the paper web and defining at least in-part the V-shaped start end and in-part another one of the first and second detachable wings, when a water supply to the respective nozzle is activated.
A machine-readable data storage medium comprising machine-executable instructions for controlling a definition of a substantially X-shaped cut in a traveling continuous paper web of a papermaking machine, the substantially X-shaped cut forming at least a substantially V-shaped tail for ending a forming roll, an opposite substantially V-shaped start for starting a new spool, a detachable first wing and a detachable second wing.
Dependencies are inferred from the claim text.