EP0674044B1 - Procédé et dispositif de guidage d'une bande de matériau - Google Patents

Procédé et dispositif de guidage d'une bande de matériau Download PDF

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Publication number
EP0674044B1
EP0674044B1 EP95102673A EP95102673A EP0674044B1 EP 0674044 B1 EP0674044 B1 EP 0674044B1 EP 95102673 A EP95102673 A EP 95102673A EP 95102673 A EP95102673 A EP 95102673A EP 0674044 B1 EP0674044 B1 EP 0674044B1
Authority
EP
European Patent Office
Prior art keywords
air jet
web
guide
guide roller
paper
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
EP95102673A
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German (de)
English (en)
Other versions
EP0674044A1 (fr
Inventor
Andreas Meschenmoser
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.)
Voith Sulzer Papiermaschinen GmbH
Original Assignee
Voith Sulzer Papiermaschinen GmbH
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
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Application filed by Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0674044A1 publication Critical patent/EP0674044A1/fr
Application granted granted Critical
Publication of EP0674044B1 publication Critical patent/EP0674044B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine

Definitions

  • the invention relates to a method and an associated device for guiding a light-weight, flexible material web or at least a strip thereof in a machine for treating the material web on and along a part of a moving guide element, in particular a strip of a paper web in a paper machine on and along one Part of a rotating guide roller.
  • this invention can also be used for transferring plastic or metal foils and textile fabrics.
  • EP-PS 326 535 a method and a device for cutting and guiding the infeed belt from a smooth roller in a press to a desired location is known. This is achieved by means of two air flows, an air flow directed against the roll surface cutting off the starting belt and detaching it from the roll, and the other air flow being transported further along a guide plate by creating a vacuum region.
  • a device is also described in US Pat. No. 1,338,094, in which the run of a material web or a strip thereof is influenced by blowing nozzles.
  • the invention has for its object to provide a method and an associated device which ensures simple and safe guiding of the material web or a strip thereof to a moving guide element and only slightly impairs the accessibility of the entire device.
  • the effect used here is the so-called Coanda effect. This describes the property of a liquid or gas jet to lay against a nearby wall and to flow along it. If the wall is formed by a cylinder, it may be possible for the flow to reach a wrap angle of more than 180 °. This can be explained by the fact that the flow entrains fluid elements from its surroundings, which creates a vacuum area between the wall and the flow, which in turn directs the flow to the wall.
  • the invention goes further by utilizing the flow or the suction effect emanating from it for the transport of the material web. It is therefore limited to use with light-weight and flexible material webs.
  • the direction of movement of the two is approximately the same when the air jet strikes the guide element.
  • An inclination of the air jet towards the guide element can also be beneficial.
  • the negative pressure caused by the air jet supports the detachment of the material web from the leading guide element and leads to the same being carried along.
  • endless, rotating belts are also suitable as guide elements.
  • deflecting the air jet and the part of the material web to be guided thereby to the subsequent unit can be done via a fixed guiding device and / or a further air jet arranged close to the guiding element, and on the other hand the material web can be taken over by another guiding element which is also moving, utilizing the same effect. In the latter case, it must be ensured that the air jet responsible for the takeover has a greater effect than the transferring air jet. It should also not be forgotten that the guide element itself is already part of the subsequent unit that further processes the material web.
  • the paper web can preferably be brought in via a roller arranged in the vicinity of the guide roller, although there are also other possibilities.
  • the advancing roller forms a simple solution variant in order to separate the strip of the material web to be guided by means of a further blowing nozzle device, to lift it off the advancing roller and to bring it into the vicinity of the guide roller.
  • the part of the paper web that is not to be guided can here by means of a Roller arranged scraper can be removed and removed.
  • Such a design also counteracts a paper jam. If the position of the guide roller can be changed, it can be immersed further into the barrel after the entire paper web has been transferred, in order to better serve its function as a guide roller in normal operation.
  • blowing nozzle devices can be changed in their direction of action or their position and the orientation or position of the guide plates. After the transfer of the paper web, it may be advantageous, for reasons of accessibility to the paper machine, if the blowing nozzle device can be moved out of the area of the paper machine.
  • the upstream one Unit 4 around a pressing device, which consists of two rollers 5 and 18 forming the dewatering nip. Together with the paper web 1, a drainage felt 12 is also passed through the drainage gap. The paper web 1 is brought with the side facing away from the dewatering felt 12 adhering to the upper roller 5 in the web running direction 11 into the vicinity of a moving guide element in the form of a rotating guide roller 2.
  • an edge strip is cut off via a blowing nozzle device 6 and lifted off the roller 5.
  • the air jet of the blowing nozzle device must therefore have a component perpendicular to the surface of the roller 5 and one opposite to the web running direction 11.
  • the same can also be achieved, for example, using a separating scraper that is combined with a blowing nozzle device.
  • the rest of the paper web 1 is then optionally removed from the roller 5 and removed by means of a scraper 7.
  • a blowing nozzle device 3 is arranged between the strip of paper web 1 and the guide roller 2, the air jet of which is oriented approximately tangentially in relation to the guide roller 2, the speed the air of the air jet is higher than that of the guide roller 2.
  • the guide roller 2 is associated with a further air nozzle of the blower nozzle device 3 and the strips of paper web 1 guided thereby from the guide roller 2 to a subsequent unit 8 deflecting blower nozzle device 10.
  • the air jet of this blowing nozzle device 10 is guided over part of the way by a guide plate 9.
  • the following unit 8 is a drying device in this example, in which the paper web 1 is guided over a plurality of heated drying cylinders 14.
  • an endless rotating dryer fabric 13 is also used.
  • the strip to be transferred Paper web 1 therefore only has to be transported into the gap between the first drying cylinder 14 and the dryer fabric 13. When the insertion of the strip is complete, the strip can be slowly widened until the entire paper web 1 passes through the units 4 and 8.
  • the upstream unit 4 is a press device consisting of two rollers 5 and 18, in which, in addition to the paper web 1, a dewatering felt 12 also runs through the press nip.
  • the roller 5 guiding the paper web 1 in the vicinity of the rotating guide roller 2 is arranged below. This offers advantages in particular with regard to the removal of the remainder of the paper web 1 lifted by the scraper 7 from the guide roller 2 into the lower part of the paper machine.
  • the edge strip of the paper web 1 to be transferred is separated and lifted off by means of a blowing nozzle device 6.
  • the strip is guided along a part of the rotating guide roller 2 via a blowing nozzle device 3.
  • a baffle 9 that deflects the air jet of the blowing nozzle device 3 and the strips of paper web 1 guided therefrom from the guide roller 2 to a subsequent unit 8, but this only over part of the way to the subsequent unit, at the end of the paper web guide area of the guide roller 2 8 runs. Because the baffle 9 does not extend to the subsequent unit 8 in both cases, the air jet is given the opportunity to widen. This is intended to counteract negative effects of the air jet on the treatment result in the subsequent unit 8.
  • the guide roller 2 can be fixed with respect to its position so that it can be immersed in its course, in particular after the entire paper web 1 has been transferred, for example to reduce the length of the free movement of the paper web 1 to the subsequent unit 8.
  • the speed of the guide roller 2 should deviate slightly from that of the paper web 1, resulting in a Self-cleaning of this guide element leads.
  • the subsequent unit 8 in FIG. 2 is a further pressing device consisting of two rollers 15 and 16, which can correspond to the pressing device shown in FIG. 1 and formed from the rollers 5 and 18, with a dewatering felt 17 likewise being guided through the press nip with the paper web 1 is.
  • the strip to be transferred must therefore only be transported into the gap between the drainage felt 17 and the roller 15.
  • the drainage felts 12 and 17 are each on a different side of the paper web 1, which is to ensure the uniformity of both sides.
  • the second press felt 17 running down here can carry the strip during insertion.
  • blowing nozzle devices 3, 6 and 10 In order to be able to adapt to changing conditions, at least some of the blowing nozzle devices 3, 6 and 10 should be changeable in their direction of action or their position and / or the orientation or position of the guide plate 9.
  • the blowing nozzle devices 3, 6 and 10 only have to extend over the width of the strip of paper web 1 to be transferred and can be switched off after the entire paper web 1 has been transferred.
  • blowing nozzle device 3 assigned to the guide roller 2 produces an air jet which, in addition to the tangential component, also has an axially extending component with respect to the guide roller 2, which is possible, for example, by a corresponding position of the blowing nozzle device 3, the strip of the paper web 1 can be caused by the spiral flow the guide roller 2 can also be fed by the air jet to an axially offset cable guide which ensures the further transport of the strip.
  • the device is not only simple and safe, it also ensures the transfer of the strip to the subsequent unit 8 in the shortest possible way and without excessive deflection, which reduces the risk of tearing.

Landscapes

  • Advancing Webs (AREA)
  • Paper (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Replacement Of Web Rolls (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (19)

  1. Procédé de guidage d'une feuille flexible continue de matière d'un poids réduit, ou au moins d'une bande de celle-ci dans une machine de traitement de la feuille continue de matière contre et le long d'une partie d'un élément de guidage se déplaçant, au moyen d'un jet d'air, caractérisé en ce que le jet d'air est introduit entre la partie à guider de la feuille continue de matière, amenée à proximité de l'élément de guidage, et l'élément de guidage, la vitesse de l'air du jet d'air étant supérieure à celle de l'élément de guidage.
  2. Procédé selon la revendication 1, caractérisé en ce que lors de l'arrivée du jet d'air sur l'élément de guidage, le sens de déplacement de tous deux est à peu prés le même.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le jet d'air et la partie de la feuille continue de matière, à guider avec celui-ci, sont déviés par l'élément de guidage, par l'intermédiaire d'un dispositif de guidage fixe, vers une unité suivante.
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que le jet d'air et la partie de la feuille continue de matière, à guider avec celui-ci, sont déviés par l'élément de guidage à l'aide d'un autre jet d'air, vers une unité suivante.
  5. Procédé selon la revendication 4, caractérisé en ce que le jet d'air résultant est déplacé, sur le parcours vers l'unité suivante, en partie le long d'un dispositif de guidage fixe.
  6. Procédé selon la revendication 1 ou 2, caractérisé en ce que le jet d'air et la partie de la feuille continue de matière, à guider avec celui-ci, sont amenés par l'élément de guidage, à proximité d'un autre élément de guidage se déplaçant, et entre la partie à guider de la feuille continue de matière et l'autre élément de guidage, est introduit un jet d'air dont l'effet guidant la feuille continue de matière dépasse celui du premier jet d'air.
  7. Machine à papier avec un cylindre de guidage rotatif et un dispositif pour le guidage d'une bande d'une feuille continue de papier (1) contre et le long d'une partie d'un cylindre de guidage (2) rotatif, qui comporte un dispositif à buses de soufflage, caractérisée en ce que le dispositif à buses de soufflage (3) est placé entre la bande de la feuille continue de papier (1), amenée à proximité du cylindre de guidage (2), et le cylindre de guidage (2), et le jet d'air est orienté dans la direction de guidage, à peu près tangentiellement par rapport au cylindre de guidage (2), la vitesse de l'air du jet d'air étant supérieure à celle du cylindre de guidage (2).
  8. Machine à papier selon la revendication 7, caractérisée en ce qu'à proximité du cylindre de guidage (2) est prévu un autre cylindre (5) approchant la feuille continue de papier (1) d'une unité (4) située en amont.
  9. Machine à papier selon la revendication 8, caractérisée en ce qu'au cylindre (5) est associé au moins un autre dispositif à buses de soufflage (6), séparant la bande à guider de la feuille continue de papier (1) et la guidant à proximité du cylindre de guidage (2).
  10. Machine à papier selon la revendication 9, caractérisée en ce qu'au cylindre (5) est associé un racloir (7) séparant du cylindre (5) la partie qui n'est pas à guider de la feuille continue de papier (1).
  11. Machine à papier selon l'une des revendications 7 à 10, caractérisée en ce que le cylindre de guidage (2) peut être modifié dans sa position, en particulier peut être enfoncé plus fortement dans le parcours de la feuille continue de papier (1), après transfert de la totalité de celle-ci.
  12. Machine à papier selon l'une des revendications 7 à 11, caractérisée en ce qu'au cylindre de guidage (2) est associée, à l'extrémité de la zone de guidage de la feuille continue de papier, une tôle de guidage (9), déviant le jet d'air et la partie à guider avec celui-ci de la feuille continue de papier (1), vers une unité (8) suivante.
  13. Machine à papier papier selon la revendication 12, caractérisée en ce que la tôle de guidage (9) ne s'étend que sur une partie du parcours vers l'unité (8) suivante.
  14. Machine à papier selon l'une des revendications 7 à 11, caractérisée en ce qu'au cylindre de guidage (2) est associé, à peu près à l'extrémité de la zone de guidage de la feuille continue de papier, un autre dispositif à buses de soufflage (10), déviant le jet d'air de guidage et la partie à guider avec celui-ci de la feuille continue de papier (1), du cylindre de guidage (2) vers une unité (8) suivante.
  15. Machine à papier selon la revendication 14, caractérisée en ce qu'une tôle de guidage (9) s'étend en partie entre l'autre dispositif à buses de soufflage (10) et l'unité suivante.
  16. Machine à papier selon l'une des revendications 7 à 15, caractérisée en ce qu'au moins l'un des dispositifs à buses de soufflage (3, 6, 10) est variable dans sa direction d'action et/ou en ce qui concerne sa position.
  17. Machine à papier selon l'une des revendications 12, 13, 15 ou 16, caractérisée en ce que la tôle de guidage (9) est variable dans son orientation et/ou en ce qui concerne sa position.
  18. Machine à papier selon l'une des revendications caractérisée en ce que l'unité (4) située en amont est un dispositif de compression et l'unité (8) suivante, un dispositif de compression ou un dispositif de séchage pour la feuille continue de papier (1).
  19. Machine à papier selon la revendication 18, caractérisée en ce que la vitesse du cylindre de guidage (2) diffère légèrement de celle de la feuille continue de papier (1).
EP95102673A 1994-03-15 1995-02-24 Procédé et dispositif de guidage d'une bande de matériau Expired - Lifetime EP0674044B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4408713 1994-03-15
DE4408713A DE4408713A1 (de) 1994-03-15 1994-03-15 Verfahren und Vorrichtung zum Führen einer Materialbahn

Publications (2)

Publication Number Publication Date
EP0674044A1 EP0674044A1 (fr) 1995-09-27
EP0674044B1 true EP0674044B1 (fr) 1997-06-18

Family

ID=6512812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95102673A Expired - Lifetime EP0674044B1 (fr) 1994-03-15 1995-02-24 Procédé et dispositif de guidage d'une bande de matériau

Country Status (8)

Country Link
US (1) US5635030A (fr)
EP (1) EP0674044B1 (fr)
JP (1) JPH0834552A (fr)
AT (1) ATE154652T1 (fr)
CA (1) CA2144577A1 (fr)
DE (2) DE4408713A1 (fr)
ES (1) ES2102898T3 (fr)
FI (1) FI116974B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785814A (en) * 1996-11-12 1998-07-28 North Pacific Paper Corporation Spool butt unwind system
FR2761352B1 (fr) * 1997-03-25 1999-05-28 Sfbt Societe Francaise De Band Bande transporteuse souple et convoyeur en faisant application
US6260287B1 (en) 1997-08-08 2001-07-17 Peter Walker Wet web stability method and apparatus
FI105802B (fi) 1998-08-11 2000-10-13 Valmet Corp Menetelmä ja laite rainan siirtämiseksi tampuuritelalle paperirainan rullaimessa
US6193845B1 (en) * 1999-05-26 2001-02-27 Voith Sulzer Paper Technology North America Inc. Blow pipe tail threading system for paper-making machines
DE10004369A1 (de) 2000-02-02 2001-08-09 Voith Paper Patent Gmbh Überführung eines Einführstreifens einer Papierbahn
DE10159319A1 (de) * 2001-12-03 2003-06-12 Voith Paper Patent Gmbh Verfahren zur Unterstützung der Übergabe einer laufenden Papier-, Karton-, Tissue- oder anderen Faserstoffbahn
DE10255734A1 (de) * 2002-11-29 2004-06-09 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Überführen einer Materialbahn
EP1846242B1 (fr) * 2005-02-04 2013-11-20 manroland sheetfed GmbH Guidage de films pour un dispositif d'estampage
US9670617B2 (en) 2011-02-15 2017-06-06 Georgia-Pacific Consumer Products Lp System and methods involving fabricating sheet products

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1338094A (en) * 1920-04-27 Paper-making
US2052869A (en) * 1934-10-08 1936-09-01 Coanda Henri Device for deflecting a stream of elastic fluid projected into an elastic fluid
US3419207A (en) * 1966-09-13 1968-12-31 Hintze Rudolf Small hermetic compressor
US3999696A (en) * 1975-05-27 1976-12-28 Crown Zellerbach Corporation Web threading system
CH598407A5 (fr) * 1975-09-30 1978-04-28 Escher Wyss Gmbh
US4136808A (en) * 1977-11-21 1979-01-30 Crown Zellerbach Corporation Web threading system
US4147287A (en) * 1978-01-05 1979-04-03 Crown Zellerbach Corporation Reel threading system
DE2912152A1 (de) * 1979-03-28 1980-10-09 Fr Schiettinger Niederlassung Vorrichtung zur regelung des flaechengewicht-querprofils bei der erzeugung von papier, karton, pappe o.dgl.
DE3117094A1 (de) * 1981-04-30 1982-11-18 Jagenberg-Werke AG, 4000 Düsseldorf Bahneinfuehrungsvorrichtung an wickelmaschinen
FI66931C (fi) * 1983-01-04 1984-12-10 Tampella Oy Ab Haolskiva foer en inloppslaoda foer en pappersmaskin
FI67901C (fi) * 1983-10-03 1987-07-20 Valmet Oy Foerfarande och anordning i torkpartiet i en pappersmaskin vid styrning av banans spets.
DE3514554C3 (de) * 1984-09-19 1998-01-08 Escher Wyss Gmbh Stoffauflauf-Vorrichtung für eine Papiermaschine und Verfahren zu deren Betrieb
US4664443A (en) * 1985-11-08 1987-05-12 Casale Rudy J Automobile convertible seat
DE3739338C2 (de) * 1987-11-20 1995-09-07 Voith Gmbh J M Luftleitkasten zum Stabilisieren des Laufs einer Warenbahn, insbesondere einer Papierbahn
FI78528C (fi) * 1988-01-26 1989-08-10 Valmet Paper Machinery Inc Foerfarande och anordning foer styrning av pappersbanans spetsdragningsband fraon pressens slaetytade vals eller motsvarande.
DE9109313U1 (de) * 1991-07-27 1991-09-26 J.M. Voith Gmbh, 7920 Heidenheim Vorrichtung zum Führen einer laufenden Bahn
DE4213707A1 (de) * 1992-04-25 1993-10-28 Escher Wyss Gmbh Stoffauflaufeinrichtung für eine Papiermaschine

Also Published As

Publication number Publication date
ES2102898T3 (es) 1997-08-01
EP0674044A1 (fr) 1995-09-27
DE59500320D1 (de) 1997-07-24
FI951158A0 (fi) 1995-03-13
ATE154652T1 (de) 1997-07-15
US5635030A (en) 1997-06-03
CA2144577A1 (fr) 1995-09-16
DE4408713A1 (de) 1995-09-21
JPH0834552A (ja) 1996-02-06
FI116974B (fi) 2006-04-28
FI951158A (fi) 1995-09-16

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