WO1998023514A1 - Winding device for a paper web or equivalent and a two-drum winder - Google Patents

Winding device for a paper web or equivalent and a two-drum winder Download PDF

Info

Publication number
WO1998023514A1
WO1998023514A1 PCT/FI1997/000723 FI9700723W WO9823514A1 WO 1998023514 A1 WO1998023514 A1 WO 1998023514A1 FI 9700723 W FI9700723 W FI 9700723W WO 9823514 A1 WO9823514 A1 WO 9823514A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
equivalent
winding
drums
paper web
Prior art date
Application number
PCT/FI1997/000723
Other languages
French (fr)
Inventor
Heikki Niskanen
Marko Jorkama
Pauli Koutonen
Original Assignee
Valmet Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valmet Corporation filed Critical Valmet Corporation
Priority to CA002272908A priority Critical patent/CA2272908A1/en
Priority to AU50555/98A priority patent/AU5055598A/en
Priority to EP97913221A priority patent/EP0942888A1/en
Priority to JP52432698A priority patent/JP2001504787A/en
Publication of WO1998023514A1 publication Critical patent/WO1998023514A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/16—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B65H2301/41486—Winding slitting winding on two or more winding shafts simultaneously
    • B65H2301/414866—Winding slitting winding on two or more winding shafts simultaneously on bed rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/132—Details of longitudinal profile arrangement of segments along axis
    • B65H2404/1321—Segments juxtaposed along axis
    • B65H2404/13212—Segments juxtaposed along axis and driven independently
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs

Definitions

  • the invention relates to a winding device for a paper web or equivalent, which winding device comprises at least one drum or equivalent, which is mounted and supported at its ends by means of bearings, the paper web being arranged to be wound into a paper roll by means of said drum or equivalent.
  • the invention also relates to a two-drum winder in which a paper web or equivalent is wound on support of two winding drums into a paper roll, in which winder the paper web is wound into a paper roll through a nip between a forward winding drum and the paper roll that is being formed, which forward winding drum and rear winding drum are mounted and supported at their ends by means of bearings.
  • two-drum winders are known in which a paper web or equivalent is wound on support of two winding drums into a paper roll through a nip between one of the winding drums and the paper roll that is being formed.
  • centre- drive winders are also known in which a paper web is wound into a paper roll through a nip between a drum provided with a centre-drive or an equivalent drum and the paper roll that is being formed.
  • One two-drum winder of this type is disclosed in the applicant's patent FI 70195 and, similarly, one centre-drive winder of this type is disclosed in the applicant's patent FI 942451 (WINROLL).
  • the diameter of the winding drums has proved to be a problem, which diameters cannot be enlarged because of geometric limitations.
  • the winding drums are dynami- cally flexible and their oscillation amplitude is relatively high, which increases deformation of the paper roll that is being formed and thus causes vibrations in winding, which in turn impairs runnability and increases premature wear of machine components.
  • the paper rolls formed in two-drum winders also tend to press the winding drums apart from each other, in which case, during winding, the centremost rolls drop downwards on the winding drums while the distance between them increases, and thus an even winding result is not obtained.
  • An object of the invention is to provide a solution to the problems in winding arising from the reasons set out.
  • An object of the invention is also to provide a winding device which has lower susceptibility to vibration and more rigid drums than in prior art arrangements.
  • An object of the invention is also to provide an arrangement in which the diameter can be chosen according to the rigidity of the drum and the properties of the drum without the central feature being determined by the problems caused by vibration.
  • the winding device is mainly characterized in that a drum or equivalent is mounted in a longitudinal direction at at least one point in the middle of the drum or equivalent by means of bearings such that at least two component drums are formed.
  • the two-drum winder according to the invention is mainly characterized in that a forward winding drum and/or a rear winding drum is/are mounted and supported in a longitudinal direction by means of a bearing at at least one point in the middle such that at least two component drums are formed.
  • the drum/drums of the winding device is/are supported and mounted in a bearing in a longitudinal direction at one or more points, in which case the rigidity of the drum/drums increases many fold. In two-drum winding, this leads to a considerable natural frequency difference in the drums of the winding drum, which reduces vibration.
  • the diameter of the drum/drums may be increased, in which case the rigidity of the rear drum further increases and its susceptibility to vibration decreases.
  • the drum supported in the middle in a longitudinal direction in accordance with the invention may be the forward or the rear drum of a two-drum slitter- winder or both winding drums may be constructed on this principle.
  • the drum arrangement in accordance with the invention is also suitable for use as the drum of a centre-drive winder.
  • Fig. 1 schematically shows a two-drum winder in which the drum in accordance with the invention is a forward drum.
  • Figs. 2 A and 2B illustrate by way of example the principle of diameter changes underlying the invention in winding drums consisting of 2, 3 and 3 components.
  • Fig. 1 schematically shows winding drums 10,11 of the invention, the forward drum 10 of which is supported and carried in a bearing at two points in the middle such that the forward drum 10 is formed of three shorter component drums 10a, 10b, 10c.
  • the rear drum 11 is supported and carried by means of bearings 21,22 at its ends.
  • the forward drum 10 is supported by means of bearings 23,24 at its ends and bearings 25,26 are placed in the middle of the forward drum 10 in a longitudinal direction.
  • the drum used in winding is supported and carried in a bearing at at least one point between the ends of the drum.
  • the drum is mounted in a bearing and supported in a longitudinal direction at points in such a way that component drums of substantially the same size are formed.
  • Figs. 2 A and 2B show which outer diameters provide two- and threefold rigidity for a drum consisting of 2, 3 and 4 components as compared to that of a one-component winding drum.
  • Fig. 2 A shows drum diameters providing twofold rigidity.
  • the diameter D of the drum is denoted on the vertical axis and the number of component drums is denoted on the horizontal axis and the size of the diameter is denoted above the bar graph.
  • a drum is provided the rigidity of which increases so as to be many- fold as compared to a drum not supported in the middle.
  • this kind of drum is used in a two-drum slitter-winder, a centre-drive winder or equivalent, the quality of the roll is improved while deformation and vibration of the roll decreases. Moreover, the runnability of the winding device improves considerably.

Landscapes

  • Winding Of Webs (AREA)

Abstract

The invention relates to a winding device for a paper web or equivalent, which winding device comprises at least one drum (10) or equivalent, which is mounted and supported at its ends by means of bearings (23, 24), the paper web being arranged to be wound into a paper roll by means of said drum (10) or equivalent. The drum (10) or equivalent is mounted in a longitudinal direction at at least one point in the middle of the drum (10) or equivalent by means of bearings (25; 26) such that at least two component drums (10a; 10b; 10c) are formed. The invention also relates to a two-drum winder in which a paper web or equivalent is wound on support of two windings drums (10, 11) into a paper roll, in which winder the paper web is wound into a paper roll through a nip between a forward winding drum (10) and the paper roll that is being formed, which forward winding drum (10) and rear winding drum (11) are mounted and supported at their ends by means of bearings (23, 24; 21, 22). The forward winding drum (10) and/or the rear winding drum (11) is/are mounted and supported in a longitudinal direction by means of a bearing (25; 26) at at least one point in the middle such that at least two component drums (10a; 10b; 10c) are formed.

Description

WINDING DEVICE FOR A PAPER WEB OR EQUIVALENT AND A TWO-DRUM WINDER
The invention relates to a winding device for a paper web or equivalent, which winding device comprises at least one drum or equivalent, which is mounted and supported at its ends by means of bearings, the paper web being arranged to be wound into a paper roll by means of said drum or equivalent.
The invention also relates to a two-drum winder in which a paper web or equivalent is wound on support of two winding drums into a paper roll, in which winder the paper web is wound into a paper roll through a nip between a forward winding drum and the paper roll that is being formed, which forward winding drum and rear winding drum are mounted and supported at their ends by means of bearings.
From prior art, two-drum winders are known in which a paper web or equivalent is wound on support of two winding drums into a paper roll through a nip between one of the winding drums and the paper roll that is being formed. From prior art, centre- drive winders are also known in which a paper web is wound into a paper roll through a nip between a drum provided with a centre-drive or an equivalent drum and the paper roll that is being formed. One two-drum winder of this type is disclosed in the applicant's patent FI 70195 and, similarly, one centre-drive winder of this type is disclosed in the applicant's patent FI 942451 (WINROLL).
With increasing speeds of paper machines and with increasing widths of manufactured paper webs and thus with increasing sizes of paper rolls, the diameter of the winding drums has proved to be a problem, which diameters cannot be enlarged because of geometric limitations. On wide machines, the winding drums are dynami- cally flexible and their oscillation amplitude is relatively high, which increases deformation of the paper roll that is being formed and thus causes vibrations in winding, which in turn impairs runnability and increases premature wear of machine components. The paper rolls formed in two-drum winders also tend to press the winding drums apart from each other, in which case, during winding, the centremost rolls drop downwards on the winding drums while the distance between them increases, and thus an even winding result is not obtained.
An object of the invention is to provide a solution to the problems in winding arising from the reasons set out.
An object of the invention is also to provide a winding device which has lower susceptibility to vibration and more rigid drums than in prior art arrangements.
An object of the invention is also to provide an arrangement in which the diameter can be chosen according to the rigidity of the drum and the properties of the drum without the central feature being determined by the problems caused by vibration.
With a view to achieving the objectives stated above and those that will come out later, the winding device according to the invention is mainly characterized in that a drum or equivalent is mounted in a longitudinal direction at at least one point in the middle of the drum or equivalent by means of bearings such that at least two component drums are formed.
The two-drum winder according to the invention is mainly characterized in that a forward winding drum and/or a rear winding drum is/are mounted and supported in a longitudinal direction by means of a bearing at at least one point in the middle such that at least two component drums are formed.
In the application in accordance with the invention, the drum/drums of the winding device is/are supported and mounted in a bearing in a longitudinal direction at one or more points, in which case the rigidity of the drum/drums increases many fold. In two-drum winding, this leads to a considerable natural frequency difference in the drums of the winding drum, which reduces vibration. Furthermore, by using this arrangement it is possible to slightly reduce, if needed, the diameter of the drum/drums and, correspondingly, when using a drum supported and mounted in a bearing in the middle in a longitudinal direction as a forward winding drum in a two-drum slitter- winder, the diameter of a rear drum may be increased, in which case the rigidity of the rear drum further increases and its susceptibility to vibration decreases. The drum supported in the middle in a longitudinal direction in accordance with the invention may be the forward or the rear drum of a two-drum slitter- winder or both winding drums may be constructed on this principle. The drum arrangement in accordance with the invention is also suitable for use as the drum of a centre-drive winder.
In the following, the invention will be described in more detail with reference to the figures in the accompanying drawing, to the details of which the invention is by no means intended to be strictly confined.
Fig. 1 schematically shows a two-drum winder in which the drum in accordance with the invention is a forward drum.
Figs. 2 A and 2B illustrate by way of example the principle of diameter changes underlying the invention in winding drums consisting of 2, 3 and 3 components.
Fig. 1 schematically shows winding drums 10,11 of the invention, the forward drum 10 of which is supported and carried in a bearing at two points in the middle such that the forward drum 10 is formed of three shorter component drums 10a, 10b, 10c. The rear drum 11 is supported and carried by means of bearings 21,22 at its ends. The forward drum 10 is supported by means of bearings 23,24 at its ends and bearings 25,26 are placed in the middle of the forward drum 10 in a longitudinal direction.
In accordance with the basic idea of the invention, in addition to bearing support arrangements placed at the ends in a longitudinal direction, the drum used in winding is supported and carried in a bearing at at least one point between the ends of the drum. Preferably, the drum is mounted in a bearing and supported in a longitudinal direction at points in such a way that component drums of substantially the same size are formed.
In the following, reference is made to Figs. 2 A and 2B, according to which a steel winding drum having an outer diameter of 850 mm and a wall thickness of 50 mm is examined in an example. The width of the slitter- winder in the example is 10 m. Figs. 2 A and 2B show which outer diameters provide two- and threefold rigidity for a drum consisting of 2, 3 and 4 components as compared to that of a one-component winding drum.
Fig. 2 A shows drum diameters providing twofold rigidity. The diameter D of the drum is denoted on the vertical axis and the number of component drums is denoted on the horizontal axis and the size of the diameter is denoted above the bar graph. The unsquared area represents a drum the rigidity of which = K, and the squared area represents a drum the rigidity of which = 2K.
Similarly, Fig. 2B shows drum diameters yielding threefold rigidity, and the squared area thus corresponds to a drum the rigidity of which = 3K. The unsquared area, as above, represents a drum the rigidity of which = K.
As is apparent from Figs. 2A and 2B, by using the arrangement in accordance with the invention, a drum is provided the rigidity of which increases so as to be many- fold as compared to a drum not supported in the middle. When this kind of drum is used in a two-drum slitter-winder, a centre-drive winder or equivalent, the quality of the roll is improved while deformation and vibration of the roll decreases. Moreover, the runnability of the winding device improves considerably.
The invention has been described above with reference to some of its preferred exemplifying embodiments only, to the details of which the invention is, however, not intended to be strictly confined. Many variations and modifications are possible within the scope of the inventive idea defined in the following claims.

Claims

Claims
1. A winding device for a paper web or equivalent, which winding device comprises at least one drum (10) or equivalent, which is mounted and supported at its ends by means of bearings (23,24), the paper web being arranged to be wound into a paper roll by means of said drum (10) or equivalent, characterized in that the drum (10) or equivalent is mounted in a longitudinal direction at at least one point in the middle of the drum (10) or equivalent by means of bearings (25; 26) such that at least two component drums (10a; 10b; 10c) are formed.
2. A two-drum winder in which a paper web or equivalent is wound on support of two winding drums (10,11) into a paper roll, in which winder the paper web is wound into a paper roll through a nip between a forward winding drum (10) and the paper roll that is being formed, which forward winding drum (10) and rear winding drum (11) are mounted and supported at their ends by means of bearings (23,24;21, 22), characterized in that the forward winding drum (10) and/or the rear winding drum (11) is/are mounted and supported in a longitudinal direction by means of a bearing (25; 26) at at least one point in the middle such that at least two component drums (10a; 10b; 10c) are formed.
3. A winding device as claimed in claim 1 or 2, characterized in that the component drums (10a; 10b; 10c) of the drum (10) are substantially of the same size.
PCT/FI1997/000723 1996-11-29 1997-11-26 Winding device for a paper web or equivalent and a two-drum winder WO1998023514A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002272908A CA2272908A1 (en) 1996-11-29 1997-11-26 Winding device for a paper web or equivalent and a two-drum winder
AU50555/98A AU5055598A (en) 1996-11-29 1997-11-26 Winding device for a paper web or equivalent and a two-drum winder
EP97913221A EP0942888A1 (en) 1996-11-29 1997-11-26 Winding device for a paper web or equivalent and a two-drum winder
JP52432698A JP2001504787A (en) 1996-11-29 1997-11-26 Winding device for paper web etc. and 2-drum winding machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI964756A FI964756A (en) 1996-11-29 1996-11-29 Rolling device in a paper web or equivalent
FI964756 1996-11-29

Publications (1)

Publication Number Publication Date
WO1998023514A1 true WO1998023514A1 (en) 1998-06-04

Family

ID=8547169

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1997/000723 WO1998023514A1 (en) 1996-11-29 1997-11-26 Winding device for a paper web or equivalent and a two-drum winder

Country Status (6)

Country Link
EP (1) EP0942888A1 (en)
JP (1) JP2001504787A (en)
AU (1) AU5055598A (en)
CA (1) CA2272908A1 (en)
FI (1) FI964756A (en)
WO (1) WO1998023514A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002046076A1 (en) * 2000-12-07 2002-06-13 Metso Paper, Inc. Method and device for winding a paper or board web
EP1460011A1 (en) * 2003-03-21 2004-09-22 Voith Paper Patent GmbH Roller, in particular roll winder drum or roller of a press

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461387A (en) * 1947-06-26 1949-02-08 Marshall Field & Company Cloth roll attachment for lace looms
US3412950A (en) * 1966-10-24 1968-11-26 Cutters Machine Co Inc Cloth roll feeding apparatus
CH559141A5 (en) * 1973-02-17 1975-02-28 Jagenberg Werke Ag
DE3123584A1 (en) * 1981-06-13 1982-12-30 Erhardt & Leimer Kg, 8900 Augsburg Device for guiding a running web

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461387A (en) * 1947-06-26 1949-02-08 Marshall Field & Company Cloth roll attachment for lace looms
US3412950A (en) * 1966-10-24 1968-11-26 Cutters Machine Co Inc Cloth roll feeding apparatus
CH559141A5 (en) * 1973-02-17 1975-02-28 Jagenberg Werke Ag
DE3123584A1 (en) * 1981-06-13 1982-12-30 Erhardt & Leimer Kg, 8900 Augsburg Device for guiding a running web

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002046076A1 (en) * 2000-12-07 2002-06-13 Metso Paper, Inc. Method and device for winding a paper or board web
US7011267B2 (en) 2000-12-07 2006-03-14 Metso Paper, Inc. Method and device for winding a paper or board web
EP1460011A1 (en) * 2003-03-21 2004-09-22 Voith Paper Patent GmbH Roller, in particular roll winder drum or roller of a press

Also Published As

Publication number Publication date
FI964756A (en) 1998-05-30
CA2272908A1 (en) 1998-06-04
EP0942888A1 (en) 1999-09-22
FI964756A0 (en) 1996-11-29
JP2001504787A (en) 2001-04-10
AU5055598A (en) 1998-06-22

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