EP0674044B1 - Verfahren und Vorrichtung zum Führen einer Materialbahn - Google Patents

Verfahren und Vorrichtung zum Führen einer Materialbahn 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
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0674044A1 (de
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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6512812&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0674044(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0674044A1 publication Critical patent/EP0674044A1/de
Application granted granted Critical
Publication of EP0674044B1 publication Critical patent/EP0674044B1/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
    • 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)
EP95102673A 1994-03-15 1995-02-24 Verfahren und Vorrichtung zum Führen einer Materialbahn Expired - Lifetime EP0674044B1 (de)

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 (de) 1995-09-27
EP0674044B1 true EP0674044B1 (de) 1997-06-18

Family

ID=6512812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95102673A Expired - Lifetime EP0674044B1 (de) 1994-03-15 1995-02-24 Verfahren und Vorrichtung zum Führen einer Materialbahn

Country Status (8)

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

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 (sv) * 1998-08-11 2000-10-13 Valmet Corp Förfarande och anordning för överföring av en bana till en tamburvals vid en rullstol för pappersbana
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
JP2008532791A (ja) * 2005-02-04 2008-08-21 エム・アー・エヌ・ローラント・ドルックマシーネン・アクチエンゲゼルシャフト エンボス装置のためのフィルムガイド
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 (sv) * 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 (sv) * 1983-10-03 1987-07-20 Valmet Oy Förfarande 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 (sv) * 1988-01-26 1989-08-10 Valmet Paper Machinery Inc Förfarande och anordning för styrning av pappersbanans spetsdragningsb and från pressens slätytade vals eller motsvarande
DE9109313U1 (sv) * 1991-07-27 1991-09-26 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4213707A1 (de) * 1992-04-25 1993-10-28 Escher Wyss Gmbh Stoffauflaufeinrichtung für eine Papiermaschine

Also Published As

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

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