WO2001066451A1 - Procede et dispositif d'enroulement d'une bande de papier - Google Patents

Procede et dispositif d'enroulement d'une bande de papier Download PDF

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Publication number
WO2001066451A1
WO2001066451A1 PCT/FI2001/000223 FI0100223W WO0166451A1 WO 2001066451 A1 WO2001066451 A1 WO 2001066451A1 FI 0100223 W FI0100223 W FI 0100223W WO 0166451 A1 WO0166451 A1 WO 0166451A1
Authority
WO
WIPO (PCT)
Prior art keywords
reel
reeling
reel spool
web
paper web
Prior art date
Application number
PCT/FI2001/000223
Other languages
English (en)
Inventor
Teppo Kojo
Rami Vanninen
Janne Veräjänkorva
Original Assignee
Metso Paper, Inc.
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 Metso Paper, Inc. filed Critical Metso Paper, Inc.
Priority to AU2001246559A priority Critical patent/AU2001246559A1/en
Publication of WO2001066451A1 publication Critical patent/WO2001066451A1/fr

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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B65H18/106—Mechanisms in which power is applied to web-roll spindle for several juxtaposed strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2284—Simultaneous winding at several stations, e.g. slitter-rewinders
    • 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
    • B65H2301/41484—Winding slitting slitting roll after winding, i.e. cutting log into individual rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Definitions

  • the invention relates to a method in reeling up of a paper web in which a paper web passed from a paper machine and/or from finishing treat- ment is reeled around a one-piece reeling core, a so-called reel spool that is intended to be re-used.
  • the invention also relates to a reel-up for implementing the aforementioned method.
  • a continuous paper web of several meters in width which is passed directly from a paper machine or from a finishing treatment apparatus connected thereto in a continuous, on-line type manner, or from a separate off-line type finishing treatment apparatus is reeled in the reel- up to form successive machine reels.
  • These large machine reels, which substantially comply with the production width of paper web function as kind of intermediate storages between off-line type finishing processes. Such further processing may relate for example to the coating and calendering of paper.
  • the web reeled on such machine reels substantially in the production width is unwound and cut in the longitudinal direction into narrower part webs of which customer rolls are formed at a later stage. The width and size of the customer rolls are adjusted to comply with the requirements of the customer and the further use of the rolls.
  • the amount of paper accumulated on a reeling core i.e. a so-called reel spool, causes deflec- tion in the reel spool which is only supported at its ends and whose length equals the web width. This deflection constitutes a significant factor which restricts and complicates the reeling up process, as will be described hereinbelow.
  • a paper web is brought to the actual reel spool via a reeling drum, a so-called nipping cylinder, the paper web being reeled on said reel spool.
  • the pressing force i.e. so-called nip force between the nipping cylinder and the roll to be formed on the reel spool is one of the essential variables to be adjusted in the reeling up process, by means of which the tightness of the roll to be formed on the reel spool is controlled.
  • the used nip force is not necessarily constant, but it can be altered in connection with the same paper grade as a function of the amount of paper accumulated on the reel spool, and for paper grades that differ from each other it is possible to use different values of the nip force that change in different ways as a function of the amount of paper accumulated on the roll.
  • the aim is to reduce the tightness, i.e. the density of the material reeled on the reel spool in the direction of the radius of the roll, wherein too tight surface layers do not compress the lower layers.
  • the increasing deflection of the reel spool caused by the mass of the paper accumulated on the reel spool results in that the nip force between the nipping cylinder and the paper roll accumulated on the reel spool does not remain constant in the transverse direction of the paper web, i.e. in the longitudinal direction of the reel spool.
  • the deflection of the roll downwards under the effect of gravitation is smaller than in the middle of the roll, which, in turn, causes a change in the nip force in the longitudinal direction of the roll.
  • the deflection of the reel spool also causes a cyclically varying force inside the paper roll, because it can be considered that every time the reel spool rotates half a revolution, it gradually deflects from its extreme position at that time to another, opposite extreme position, causing a corresponding deformation in the paper roll which is already formed on the reel spool.
  • the air bag can also be formed before the nip underneath the paper web travelling on the nipping cylinder, if the used nip force is so high that the flow of air through the nip to the reel itself is prevented.
  • the formation of the air bag that complicates the reeling up process occurs especially with denser and less porous paper grades when a full-width paper web is reeled up. Typical examples of this include for example reeling up of coated or calendered paper grades into wide machine reels.
  • nipping cylinder equipped with a grooved or perforated surface.
  • Examples of such nipping cylinders are presented in Papermaking Part 3, pp. 157-158. It is, however, a common problem in such solutions of prior art that the grooved or perforated surface of the nipping cylinder also easily works the paper web itself in an undesirable manner.
  • the method according to the invention is primarily characterized in what will be presented in the characterizing part of claim 1.
  • the reel-up according to the invention is characterized in what will be presented in the characterizing part of claim 10.
  • the method and device according to the invention are characterized by the following features which improve the performance and controllability of the reeling up process and maintain the quality of the paper webs contained in the paper reels attained as a result of the process.
  • the reeling of two or more adjacent part webs on the spool gives the possibility to adapt the reeling of said part webs in such a manner that a space remains between the corresponding rolls for a supporting member/members by means of which the reel spool can, in addition to end support, also be supported at one or several supporting points in the longitudinal direction of the axis. By means of this additional support it is possible to prevent/reduce the deflection of the reel spool.
  • the air trapped between the rolls built up on the reel spool and paper webs, and/or between the nipping cylinder and paper webs is capable of being discharged via the edges of narrow part webs considerably more easily than in the case of the full-width web. This reduces the formation tendency of an air bag in the reeling up process, especially in webs that permeate air poorly.
  • nipping cylinders for individual part webs in order to enable more accurately the compression of each part web and the corresponding roll each with an equally high nip force in the reeling up. In the case of deflection of the reel spool this cannot be achieved in a situation in which one one-piece full-width nipping cylinder is used.
  • different part webs can also be compressed by means of nip forces that differ from each other.
  • the cylinder in question can be of a so-called deflection compensated type, wherein the nip force of the rolls corresponding to different part webs can be compensated according to the deflection of the reel spool.
  • Fig. 1 shows the method according to the invention schematically in a top-view
  • Fig. 2 illustrates in a certain situation in a side-view the additional supporting of the reel spool between the part webs in addition to the normal end support
  • Fig. 3 shows in a top-view the use of a one-piece, deflection compensated nipping cylinder when compensating the change in the nip force in the rolls corresponding to different part webs caused by the deflection of the reel spool,
  • Fig. 4 shows the use of separate nipping cylinders in a top view.
  • Fig. 1 shows a top-view of an apparatus for reeling up, in which a full- width paper web W (whose width corresponds to the width of production or the treatment width of the finishing stage) is passed in the direction shown by an arrow to the operating range of cutting members in a cutting station C.
  • the cutting members can be mechanical blades according to prior art, for example rotating blades or the like which make longitudinal slits in the paper web passing by, said slits dividing the web into narrower part webs W1 to W5.
  • the division into part webs can also take place without actual mechanical blades, wherein the cutting can be conducted for example as a so-called water jet cutting.
  • the cutting members are placed in pairs above and below the paper web, and these so-called upper and lower blades can be moved synchronically with respect to each other in the lateral direction of the paper web according to the desired part web width by means of mechanical solutions of prior art.
  • the purpose of the arrows at the location of the respective cutting members of the different part webs is to illustrate the possibility to adjust the cutting members in the lateral direction.
  • the part webs W1 to W5 proceed to the spreading and guiding apparatus S, which contains means for guiding the part webs apart from each other in the lateral direction if necessary, and via a nipping cylinder D further around the reel spool R into separate rolls R1 to R5.
  • the spreading and guiding apparatus S can be implemented by means of mechanical solutions known as such, and in a similar manner, it is possible to use any known mutual modes of operation of the nipping cylinder and the reel spool as well as necessary carrier roll and auxiliary roll solutions in the reeling up of the webs by means of the nipping cylinder D to the reel spool R.
  • the reel spool R may be of a known type, i.e. a metal body roll arranged rotatable in bearing housings at its ends.
  • the reel-up in question is a centre-drive assisted reel-up, the reel spool is rotated with a drive of its own.
  • the slitting into part webs can be temporarily interrupted either for the all or at least some part webs until the threading of the part web/webs to the new reel spool has been finished, and the reeling around the new reel spool has begun.
  • the reel change i.e. the act of guiding the web around the new reel spool can be conducted in full width, if necessary.
  • the apparatus shown in Fig. 1 contains one set of cutting mem- bers/cutting member pairs used in the slitting.
  • the number of cutting members/cutting member pairs can be selected in such a manner that it is possible to refer to two so-called sets of blades, wherein when the first set of blades is guided against the paper web and performs slitting, the second set of blades, which at that moment is off the contact with the paper web, can be pre- adjusted so that it corresponds to the new width values of the part webs. In this way, when the reel spool is changed, it is possible to guide said first set of blades off the paper web first (or e.g.
  • Fig. 2 illustrates the roll deflection caused by the weight of the paper reeled on the reel spool R in a situation in which a conventional end support (EB1 and EB2) is used for supporting the roll.
  • EB1 and EB2 The deflection of the reel spool in relation to the straight axial line (marked with a dotted line), which deflection also corresponds to change occurring in the nip line, is illustrated by means of a dotted line in Fig. 2.
  • Fig. 2 also illustrates a support of the reel spool according to the present invention between the part rolls formed on the reel spool in such an embodiment in which two intermediate supports (IB1 and IB2) are used to prevent/reduce the deflection/vibration of the reel spool.
  • the invention is not, however, restricted to the use of two intermediate supporting points according to Fig. 2, but there may be one or more intermediate supporting points, and the location of the same in the lateral direction of the reel spool can be selected in such a manner that it is appropriate in view of the number and width of part webs/rolls manufactured at a given time.
  • a preferred embodiment for implementing the bearing arrangement in the loading point between the supporting member and the rotating reel spool is the use of such a bearing application which contains a wide contact surface and/or uses gas or liquid as an intermediate agent, in which the surface pressure and friction produced on the surface of the reel spool are such that the normal surface of the reel spool can directly function as the second bearing surface without any alterations.
  • the loca- tion of the intermediate supporting point/points can be freely selected so that they are appropriate in view of the number and width of the part webs/reels without any alterations being necessary in the reel spool itself.
  • the invention is not, however, restricted solely to the use of a bearing application according to the description above, but the intermediate support of the reel spool in the loading point between the supporting member and the rotating reel spool can also be implemented by means of mechanical bearing solutions known as such in which the surface of the reel spool that functions as the second bearing application surface is treated and/or altered in the required manner.
  • Fig. 3 shows the principle of using a one-piece deflection compensated nipping cylinder D for controlling the reeling up of the part rolls R1 to R5.
  • the adjustment of the longitudinal profile of curvature of the nipping cylinder can be implemented by utilizing hydrostatic, hydraulic or other types of force members and cylinder structures of prior art.
  • Fig. 4 illustrates the act of controlling the reeling up of part webs by using a separate, individually adjustable nipping cylinder (D1 to D5) for each part roll R1 to R5.
  • D1 to D5 individually adjustable nipping cylinder
  • the invention is not, according to the details shown in Fig. 4 restricted to such an embodiment, in which each part web and corresponding part roll has a nipping cylinder of its own, but the number of nipping cylinders can also be selected in such a manner that one nipping cylinder is used for controlling the reeling of two or more adjacent part webs.
  • Figs. 4 illustrates the act of controlling the reeling up of part webs by using a separate, individually adjustable nipping cylinder (D1 to D5) for each part roll R1 to R5.
  • the slitting into part webs and the reeling up of these part webs on a reel spool is implemented in such a manner that the part webs/rolls are equally wide when compared to each other, and the spaces between the corresponding rolls in the reel spool are equal in size.
  • the invention is not, however, restricted solely to this embodiment, but the number and width of the part webs/rolls as well as the spaces between the part rolls in the reel spool can vary from those shown in Figs. 1 to 4, if necessary.
  • the invention is not restricted to the embodiment, in which all part webs/rolls would be equally wide, but the full-width paper web can also be slit in such a manner that part webs of two or more different widths are formed, and these part webs can be further reeled up on the reel spool in such a manner that the spaces between the part rolls that are being formed differ in size.
  • a part/parts of the paper web advantageously a part/parts of poor quality is/are guided aside, and said part/parts of the paper web is/are not reeled on the reel spool R.
  • the part webs can, of course, be separated from each other by removing a part of suitable width from the paper web between the part webs reeled into part reels without having to change the travel direction of the part webs separately with the spreading and guiding means (S).
  • the invention is not restricted to be used in a reeling up process that takes place at a given stage of the papermaking process, although it is advantageous to conduct slitting and the thereafter following reeling up of the part webs into adjacent rolls on the reel spool already as a first reeling up process conducted in the end of the on-line type continuous process. If, however, the paper web to be treated obtains such properties at a later off-line treatment stage which complicate the reeling up of the full-width web and/or worsen the drawbacks caused by the deflection of the reel spool, it is possible to use the method and device ac- cording to the invention as late as in the reeling up process following said finishing treatment.
  • the finishing stage of the aforementioned kind can be for example coating of paper web, whereby the air permeability of the web is reduced.
  • the finishing stage can also be off-line calendering, such as supercalendering.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)

Abstract

L'invention concerne un procédé d'enroulement d'une bande de papier, au cours duquel une bande de papier W continue transférée de la machine à papier et/ou du traitement de finition est enroulée en bobines successives autour d'un moyeu d'enroulement d'une seule pièce, appelé bobine d'enroulement et destiné à être réutilisé. En relation avec ce procédé d'enroulement, la bande de papier dans sensiblement toute sa largeur est tout d'abord fendue au moyens de molettes coupeuses disposées longitudinalement par rapport à la bande, en deux ou plusieurs bandes W1 à W5, de largeur égale ou différente, lesdites bandes étant ensuite enroulées autour d'un moyeu d'enroulement d'une seule pièce, de sorte que soient formés des rouleaux séparés R1 à R5 qui constituent une bobine et peuvent être déplacés pour un traitement ultérieur ou utilisation ultérieure, par déroulement de ladite bobine.
PCT/FI2001/000223 2000-03-07 2001-03-07 Procede et dispositif d'enroulement d'une bande de papier WO2001066451A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001246559A AU2001246559A1 (en) 2000-03-07 2001-03-07 A method and a device in reeling up of a paper web

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20000514A FI111927B (fi) 2000-03-07 2000-03-07 Menetelmä ja laite paperirainan kiinnirullauksessa
FI20000514 2000-03-07

Publications (1)

Publication Number Publication Date
WO2001066451A1 true WO2001066451A1 (fr) 2001-09-13

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ID=8557860

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Application Number Title Priority Date Filing Date
PCT/FI2001/000223 WO2001066451A1 (fr) 2000-03-07 2001-03-07 Procede et dispositif d'enroulement d'une bande de papier

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AU (1) AU2001246559A1 (fr)
FI (1) FI111927B (fr)
WO (1) WO2001066451A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1721848A2 (fr) * 2005-05-11 2006-11-15 Voith Patent GmbH Machine à bobiner
WO2014143868A1 (fr) * 2013-03-15 2014-09-18 Davis-Standard, Llc Appareil d'enroulement comportant un bras de support
CN105398860A (zh) * 2015-12-03 2016-03-16 太仓市中厚机械有限公司 一种高精度分条机
CN108792736A (zh) * 2018-03-12 2018-11-13 江阴市莱尔机械有限公司 一种造纸机上用的导辊
WO2019034319A1 (fr) * 2017-08-16 2019-02-21 Voith Patent Gmbh Dispositif, installation et procédé d'enroulement de bandes partielles d'une bande de matériau

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601435A (en) * 1983-07-07 1986-07-22 Oy Wartsila Ab Winder arrangement
DE3900960A1 (de) * 1989-01-14 1990-08-02 Sundwiger Eisen Maschinen Vorrichtung zum laengsteilen eines bandes und aufwickeln der streifen des geteilten bandes
US5026005A (en) * 1988-11-17 1991-06-25 Valmet Paper Machinery Inc. Method and apparatus for reel-up of a paper web
EP0483093A1 (fr) * 1990-10-26 1992-04-29 Valmet Paper Machinery Inc. Enroulement et méthode pour la régulation de la pression de contact durant un enroulement
US5370327A (en) * 1993-05-06 1994-12-06 Beloit Technologies, Inc. Method and apparatus for reeling a wound web roll

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601435A (en) * 1983-07-07 1986-07-22 Oy Wartsila Ab Winder arrangement
US5026005A (en) * 1988-11-17 1991-06-25 Valmet Paper Machinery Inc. Method and apparatus for reel-up of a paper web
DE3900960A1 (de) * 1989-01-14 1990-08-02 Sundwiger Eisen Maschinen Vorrichtung zum laengsteilen eines bandes und aufwickeln der streifen des geteilten bandes
EP0483093A1 (fr) * 1990-10-26 1992-04-29 Valmet Paper Machinery Inc. Enroulement et méthode pour la régulation de la pression de contact durant un enroulement
US5370327A (en) * 1993-05-06 1994-12-06 Beloit Technologies, Inc. Method and apparatus for reeling a wound web roll

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1721848A2 (fr) * 2005-05-11 2006-11-15 Voith Patent GmbH Machine à bobiner
EP1721848A3 (fr) * 2005-05-11 2007-07-18 Voith Patent GmbH Machine à bobiner
WO2014143868A1 (fr) * 2013-03-15 2014-09-18 Davis-Standard, Llc Appareil d'enroulement comportant un bras de support
CN105398860A (zh) * 2015-12-03 2016-03-16 太仓市中厚机械有限公司 一种高精度分条机
WO2019034319A1 (fr) * 2017-08-16 2019-02-21 Voith Patent Gmbh Dispositif, installation et procédé d'enroulement de bandes partielles d'une bande de matériau
CN108792736A (zh) * 2018-03-12 2018-11-13 江阴市莱尔机械有限公司 一种造纸机上用的导辊

Also Published As

Publication number Publication date
AU2001246559A1 (en) 2001-09-17
FI111927B (fi) 2003-10-15
FI20000514A (fi) 2001-09-08
FI20000514A0 (fi) 2000-03-07

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