EP0932723B1 - Walze zum führen einer beweglichen warenbahn - Google Patents

Walze zum führen einer beweglichen warenbahn Download PDF

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Publication number
EP0932723B1
EP0932723B1 EP97942045A EP97942045A EP0932723B1 EP 0932723 B1 EP0932723 B1 EP 0932723B1 EP 97942045 A EP97942045 A EP 97942045A EP 97942045 A EP97942045 A EP 97942045A EP 0932723 B1 EP0932723 B1 EP 0932723B1
Authority
EP
European Patent Office
Prior art keywords
roll
cylinder
mantle
mantle tube
axle
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP97942045A
Other languages
English (en)
French (fr)
Other versions
EP0932723A1 (de
Inventor
Kai Jokinen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
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
Priority claimed from FI963710A external-priority patent/FI108555B/fi
Priority claimed from FI972400A external-priority patent/FI972400A0/fi
Application filed by Metso Paper Oy filed Critical Metso Paper Oy
Publication of EP0932723A1 publication Critical patent/EP0932723A1/de
Application granted granted Critical
Publication of EP0932723B1 publication Critical patent/EP0932723B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/36—Guiding mechanisms
    • D21F1/40—Rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/0073—Accessories for calenders
    • D21G1/0086—Web feeding or guiding devices

Definitions

  • This invention relates to a rotating roll in accordance with the preamble of claim 1.
  • a spreader roll used in contex with paper machine calenders, by means of which the travel of paper web can be guided.
  • the roll comprises three cylinders side by side, each cylinder individually fitted with bearings on a support axle running through all three of them.
  • the farthermost cylinders are so fitted with the bearings that the outmost bearings can be moved slightly sideward from the centre line of the support axle.
  • the three-component roll becomes a construction where the midmost roll is rotating totally around the support axle centre line, but the farthermost rolls can be adjusted into a slightly deflected position, whereby the whole roll axis of rotation is a broken line, but only with a slight change of direction.
  • the bearings used in the farthermost rolls have been ball bearings and adjustment has been possible in moving another journal box.
  • US-patent 4,470,183 forming the preamble of present claim 1 discloses a roll guiding the travel of a paper web.
  • the roll comprises a rotatable mantle portion and a non-rotating shaft portion.
  • the shaft is supported on a frame.
  • a bushing is mounted around the smaller end part of the shaft, which by means of a bearing is in force transmitting contact with the mantle portion of the roll.
  • the inner end of the bushing is pivotally connected to the shaft by means of a pivot bearing.
  • At the other end of the bushing there is a deflection-adjustment screw, which is connected to the end part of the shaft by threads.
  • At least a portion of the mantle will rotate eccentrically with respect to the centre line of the support construction.
  • the mantle of the roll can be divided into separate parts mounted axially one after the other.
  • the objective of the invention is to eliminate the discontinuities from the roll an this is reached in using reinforced plastic as roll material or a similar composite construction, of which a uniform mantle is made fitted from its ends and most suitably also between them with thrust bearings.
  • the proposed material allows rotation around a slightly curved rotation axis. During rotation the mantle is subjected to alternating stress due to continuous bending. Since in used rolls the required deflection is small, for instance in a six meter roll the deflection of the centre at the roll end is appr. 1 cm, by which such a small spreading during roll rotation is produced that it does not exceed the spreading value of 0,1% permitted for the mantle material.
  • An adjustment carried out with a roll as per this invention is ideal for paper web.
  • a curved and continuous profile is produced on the line where the web touches the roll.
  • the roll is light and inexpensive to manufacture.
  • the mantle curvation can be easily adjusted and fitting with bearings is easily done on one straight or on several straight axles.
  • Figure 1 shows roll 1 of composite construction with a mantle tube 1.
  • the mantle is cylindrical with a standard sized diameter.
  • an axle 2 known as such, which is not rotated and which is propped in its position.
  • Axle 2 is not moved during adjustment by means of which the outer profile of the roll is altered.
  • the middle portion of the axle has an enlargment in order to improve its sturdiness.
  • Mantle 1 is a uniform tube.
  • one end of the roll is illustrated fitted with an adjustable bearing support different from the one in the other roll end.
  • an adjustable bearing support different from the one in the other roll end.
  • bushing 5 In the solution to the left is the end of bushing 5 that supports bearing 4 fitted by a support joint 8 to support axle 2 inside roll 1.
  • Bushing 5 partly extrudes from the roll and by means of adjusting screw 7 the rotation centre of bushing 5 and as well as of bearing 4 is deflected from the support axle centre.
  • the rotation centre of the bearing is on curved line 12 presenting simulataneously the centre line of the bent roll.
  • Bushing 5 must fit firmly in place on axle 2 which means that in addition to adjusting screw 7 bushing 5 must be made immobile by other supporting means as soon as the proper adjustment status has been determined.
  • the embodiment to the right in figure 1 shows how bushing 5 is fixed on axle 2 by means of ball joint 3. In this case the rotation of bushing 5 is most suitably prevented by means of adjusting screws 7 running through axle 2.
  • mantle 1 of many meters length and supported by four bearings is curved by adjusting the outermost bearing supports into an externally even curvation without any spots of discontinuity.
  • the curvations in practice are so small that a mantle of composite construction can take completely the existing bending stress.
  • the mantle must bend twice over a straight line in both directions, i.e. once to the tensile stress state and once to the compression state.
  • the mantle is affected by alternatin stress which, however, may not exceed the permitted spreading value of 0,1%, i.e. the limit given for composite materials.
  • Figure 2 shows a roll of composite construction with a mantle tube 1.
  • the mantle is cylindrical with a diametre of standard size.
  • Mantle 1 is a uniform tube.
  • the roll construction rests on two firm axles 2a and 2b.
  • bushing 5 is a bearing solution fastened by joint 8 that includes a fulcrum pin to axle 2a within mantle 1.
  • the pin of joint 8 goes through axle 2a so that its both ends reach bushing 5.
  • bushing 5 can be turned with respect to axle 2a, whereby bearings 4 form a pair of power bending the mantle tube.
  • the rotation centre of bearings 4 is on curved line 12 presenting simultaneously the centre line of the bent mantle.
  • bushing 5 to axle 2 can be improved in using similar extra screws installed beside screw 7. Screws turnable from differing directions from bushing 5 against support axle 2a can be used.
  • the embodiment to the right in figure 2 shows how bushing 5 is fixed to axle 2b by means of a ball joint 3. In this case the rotation of bushing 5 is most suitably prevented by means of adjusting screws 7 through axle 2b.
  • bushings 5 are directly fixed to fastenings 14,15,16,17,18 at the roll ends.
  • the fastenings keep the bushings non-rotating but allow turning them around joint 15 in order to bend the mantle.
  • the arrangement is turned activating bracket 16 by means of a force.
  • a proper way is, for instance, to convay a screw force to bracket 16 turning screw 18, whereby bushings 5 also retain their accurately adjusted angle-position when part 14 is locked and made immobile by the screw.
  • the mantle material is of glass fibre construction or of carbon fibre epoxy composite construction, which makes the mantle light and inexpensive to manufacture.
  • the paper web moving on the mantle rotates the mantle and the tension force of the paper web works as mantle load, the tension force being relatively small, only a few hundred of Newtons per metre.

Landscapes

  • Paper (AREA)
  • Steering Controls (AREA)
  • Escalators And Moving Walkways (AREA)
  • Knitting Machines (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (4)

  1. Walze zum Führen des Laufs einer Papierbahn, insbesondere bei einer Papiermaschine, mit zumindest einem Abschnitt ihrer Mantelröhre (1), der in Bezug auf die Mittellinie eines Stützaufbaus exzentrisch drehbar ist, und mit einstellbaren nicht drehenden Zylinderelementen wie beispielsweise Hülsen (5) an beiden Enden der Mantelröhre (1) und des Weiteren mit einer Achse (2; 2a, 2b) oder einem Befestigungskörper (17) als ein Stützaufbau und einem Gelenk (8; 15) zwischen jedem Zylinderelement und dem Stützaufbau für ein Einstellen der Richtung des Zylinderelementes in Bezug auf die Mittellinie des Stützaufbaus derart, dass das Zylinderelement in Bezug auf die Mittellinie des Stützaufbaus unter Verwendung eines mechanischen Einstellelementes wie beispielsweise eine Schraube (7; 18) ablenkbar wird,
    dadurch gekennzeichnet, dass
       die Mantelröhre gleichförmig ist und aus einem verstärkten Kunststoffmaterial oder einem ähnlichen Verbundaufbau besteht und
       zwei Lager (4a, 4b) bei einem Abstand voneinander an jedem Zylinderelement zwischen dem Zylinderelement und der Mantelröhre eingesetzt sind, um die Mantelröhre (1) zu drehen.
  2. Walze gemäß Patentanspruch 1,
    dadurch gekennzeichnet, dass
       die Zylinderelemente (5) in Bezug auf ein anderes Zylinderelement innerhalb der Mantelröhre (1) wie die Achse (2) unter Verwendung eines mechanischen Einstellelementes wie beispielsweise eine Schraube (7) abgelenkt werden, um eine Ablenkung auszuführen.
  3. Walze gemäß Patentanspruch 1
    dadurch gekennzeichnet, dass
       Zylinderelemente (5) in Bezug auf feste Achsen (2a, 2b), die von beiden Enden in die Walze hineinreichen, unter Verwendung eines mechanischen Einstellelementes wie beispielsweise eine Schraube (7) abgelenkt werden, um eine Ablenkung auszuführen.
  4. Walze gemäß Patentanspruch 1
    dadurch gekennzeichnet, dass
       Zylinderelemente (5) beim Stützen der Zylinderelemente durch einen Stützaufbau außerhalb der Walze abgelenkt werden, die ein Gelenk (15) in dem Befestigungskörper (17) für ein Drehen des Elementes (5) und einen Drehmechanismus (16, 18), der beispielsweise eine Schraube (18) verwendet, aufweist, um eine Ablenkung des Elementes (5) auszuführen und um das Element in der eingestellten Position zu fixieren.
EP97942045A 1996-09-19 1997-09-19 Walze zum führen einer beweglichen warenbahn Expired - Lifetime EP0932723B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FI963710A FI108555B (fi) 1996-09-19 1996-09-19 Liikkuvan rainan kulkua ohjaava tela
FI963710 1996-09-19
FI972400 1997-06-06
FI972400A FI972400A0 (fi) 1997-06-06 1997-06-06 Vals styrande en loepande banas gaong
PCT/FI1997/000561 WO1998012381A1 (en) 1996-09-19 1997-09-19 A roller for guiding movable web

Publications (2)

Publication Number Publication Date
EP0932723A1 EP0932723A1 (de) 1999-08-04
EP0932723B1 true EP0932723B1 (de) 2002-11-20

Family

ID=26160210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97942045A Expired - Lifetime EP0932723B1 (de) 1996-09-19 1997-09-19 Walze zum führen einer beweglichen warenbahn

Country Status (4)

Country Link
EP (1) EP0932723B1 (de)
AT (1) ATE228186T1 (de)
DE (1) DE69717298T2 (de)
WO (1) WO1998012381A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10356045B3 (de) * 2003-12-01 2005-06-02 Stowe Woodward Ag Walze zum Führen einer beweglichen Warenbahn
EP1921206A2 (de) 2003-09-05 2008-05-14 Voith Patent GmbH Breitstreckwalze

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20309301U1 (de) * 2003-06-13 2003-08-28 Stowe Woodward AG, 33758 Schloß Holte-Stukenbrock Breitstreckwalze
DE102005044958A1 (de) 2005-09-20 2007-03-22 Voith Patent Gmbh Breitstreckwalze
DE102005044956A1 (de) 2005-09-20 2007-03-22 Voith Patent Gmbh Breitstreckwalze
DE102005044957A1 (de) 2005-09-20 2007-03-22 Voith Patent Gmbh Breitstreckwalze
DE102010026370A1 (de) * 2010-07-07 2012-01-12 Karl Genthe Streckwalze für dünne bahnförmige Materialien
EP3094778B1 (de) 2014-01-13 2020-05-27 Voith Patent GmbH Breitstreckwalze

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI811720A0 (fi) * 1981-06-03 1981-06-03 Waertsilae Oy Ab Valskonstruktion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1921206A2 (de) 2003-09-05 2008-05-14 Voith Patent GmbH Breitstreckwalze
EP1921206A3 (de) * 2003-09-05 2008-05-21 Voith Patent GmbH Breitstreckwalze
DE10356045B3 (de) * 2003-12-01 2005-06-02 Stowe Woodward Ag Walze zum Führen einer beweglichen Warenbahn

Also Published As

Publication number Publication date
DE69717298T2 (de) 2003-08-14
WO1998012381A1 (en) 1998-03-26
DE69717298D1 (de) 2003-01-02
ATE228186T1 (de) 2002-12-15
EP0932723A1 (de) 1999-08-04

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