Reel-up and a method for winding into a roll a paper web and for starting a new roll

Patent metadata

Field	Value
Publication number	US-9511968-B2
Application number	US-201414909228-A
Country	US
Kind code	B2
Filing date	Jul 15, 2014
Priority date	Sep 9, 2013
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

The invention relates to a reel-up ( 1 ) for receiving and winding into a roll ( 2 ) a paper web (W) that arrives from a drying cylinder in a paper making machine and for starting a new roll ( 2 ) from a tail ( 19 ) formed by cutting the paper web (W). The reel-up ( 1 ) comprises a rotatably mounted reel spool ( 3 ) onto which a paper web (W) can be wound to create a paper roll ( 2 ) of increasing diameter; and an endless flexible belt ( 4 ) mounted for rotation along a predetermined path of travel such that the flexible belt ( 4 ) forms a loop. The flexible belt ( 4 ) is positioned adjacent to the reel spool ( 3 ) to engage the paper web (W) against the reel spool ( 3 ) during winding such that the flexible belt ( 4 ) is deflected from the predetermined path of travel by an amount relative to the amount of paper material wound on the reel spool ( 3 ). A pair of water nozzles ( 14, 15 ) is arranged such that each water nozzle ( 14, 15 ) can direct a web-cutting water jet stream against the paper web (W) to cut the paper web (W) at a point before the paper web (W) reaches the flexible belt ( 4 ). Each water nozzle ( 14, 15 ) is arranged to be movable in a direction which is transverse to the direction of movement of the paper web (W) and a glue nozzle ( 17 ) is arranged to direct a stream of glue against the reel spool ( 3 ) or against the tail ( 19 ). The invention also relates to a corresponding method for operating the reel-up.

First claim

The invention claimed is:

1. A reel-up ( 1 ) for receiving and winding into a roll ( 2 ) a paper web (W) that arrives from a drying cylinder in a paper making machine and for starting a new roll ( 2 ) from a tail ( 19 ) formed by cutting the paper web (W), the reel-up ( 1 ) comprising:
a rotatably mounted reel spool ( 3 ) onto which a paper web (W) can be wound to create a paper roll ( 2 ) of increasing diameter; and
an endless flexible belt ( 4 ) mounted for rotation along a predetermined path of travel such that the flexible belt ( 4 ) forms a loop, the flexible belt ( 4 ) being positioned adjacent to the reel spool ( 3 ) to engage the paper web (W) against the reel spool ( 3 ) during winding such that the flexible belt ( 4 ) is deflected from the predetermined path of travel by an amount relative to the amount of paper material wound on the reel spool ( 3 ),
wherein:
a pair of water nozzles ( 14 , 15 ) is configured such that each water nozzle ( 14 , 15 ) can direct a web-cutting water jet stream against the paper web (W) to cut the paper web (W) at a point before the paper web (W) reaches the flexible belt ( 4 ) such that a tail ( 19 ) is created,
each water nozzle ( 14 , 15 ) is configured to be movable in a direction which is transverse to the direction of movement of the paper web (W), and
a glue nozzle ( 17 ) is configured to direct a stream of glue against the reel spool ( 3 ) or against the tail ( 19 ).

2. The reel-up ( 1 ) according to claim 1 , wherein a cutting device ( 18 ) is configured to divide the web in two equally wide parts, the cutting device ( 18 ) being configured to act on the paper web (W) at a point which is upstream of the point at which the water jets are arranged to cut the paper web (W).

3. The reel-up ( 1 ) according to claim 1 , wherein the glue nozzle ( 17 ) is configured to direct its stream of glue in a direction which is substantially parallel to the surface of the flexible belt ( 4 ) in the area where the paper web (W) is engaged against the reel spool ( 3 ).

4. The reel-up ( 1 ) according to claim 1 , wherein the reel-up further comprises:
a deflection sensor ( 10 ) mounted adjacent to the flexible belt ( 4 ) and configured to measure the amount of deflection of the flexible belt ( 4 ) from the predetermined path of travel;
an actuator ( 11 ) for positioning the reel spool ( 3 ) and the flexible belt ( 4 ) relative to each other to vary the amount of deflection of the flexible belt ( 4 ); and
a controller ( 12 ) connected to the deflection sensor ( 10 ) and the actuator ( 11 ) for controlling the amount of deflection of the flexible belt ( 4 ) as the paper roll ( 2 ) increases in diameter.

5. The reel-up according to claim 1 , wherein the glue nozzle ( 17 ) is configured to be movable between an active position in which it is capable of directing a stream of glue against the reel spool ( 3 ) and a passive position away from the area of the reel spool ( 3 ).

6. A method of winding a paper web (W) to form a roll and for starting a new roll ( 2 ) from a tail ( 19 ) formed by cutting the paper web (W), the method comprising the steps of:
engaging an endless flexible belt ( 4 ) against a reel spool ( 3 );
moving the endless flexible belt ( 4 ) along a predetermined path of travel;
rotating the reel spool ( 3 ) such that the surface of the reel spool ( 3 ) moves together with the flexible belt ( 4 ) and forms a nip with the flexible belt ( 4 ); receiving the paper web (W) onto the flexible belt ( 4 );
advancing the paper web (W) into the nip and directing the web (W) around the reel spool ( 3 ) to form a roll ( 2 ) of increasing diameter;
cutting the paper web (W) by two water jets at a point before the paper web (W) reaches the flexible belt ( 4 ) such that a tail ( 19 ) of paper is formed between the water jets;
moving the water jets in a direction transverse to the direction of movement of the paper web (W); and
directing a stream of glue against the reel spool ( 3 ) or the tail ( 19 ).

7. The method according to claim 6 , wherein the method further comprises:
operating the reel-up ( 1 ) in an initial phase in which the water jets are not active; activating a cutting device that cuts the paper web (W) web in two equally wide parts at a point which is upstream of the point where the water jets are arranged to cut the paper web (W) such that the paper web (W) is divided in two parts as it reaches the flexible belt ( 4 );
stopping the cutting such that an undivided web reaches the flexible belt ( 4 );
initiating cutting by means of the water jets at two points that are separate from each other in the direction transverse to the direction of movement of the paper web (W) such that the paper web (W) is cut in two side parts ( 20 , 21 ) and one tail ( 19 ) which is surrounded on both sides by the side parts ( 20 , 21 );
directing a stream of glue against the reel spool ( 3 ) or the tail ( 19 ) and moving the water jets in a direction transverse to the direction of movement of the paper web (W) such that the width of the tail ( 19 ) increases until the tail ( 19 ) has attained the full width of the paper web (W); and
activating the cutting device ( 18 ) again such that the paper web (W) is once again cut in two parts.

Assignees

• Valmet Oy

Inventors

• Malmqvist Per-Olof

Classifications

• B65H2801/84

  Paper-making machines · CPC title

• B65H2301/51512

  using a cutting member moving linearly in a plane parallel to the surface of the web and along a direction crossing the handled material · CPC title

• B65H19/286

  by applying adhesive to the web · CPC title

• B65H18/22

  by friction band · CPC title

• B65H19/283

  by applying adhesive to the core · CPC title