EP0949375B1 - Arrangement for transferring a fibrous web - Google Patents
Arrangement for transferring a fibrous web Download PDFInfo
- Publication number
- EP0949375B1 EP0949375B1 EP99105219A EP99105219A EP0949375B1 EP 0949375 B1 EP0949375 B1 EP 0949375B1 EP 99105219 A EP99105219 A EP 99105219A EP 99105219 A EP99105219 A EP 99105219A EP 0949375 B1 EP0949375 B1 EP 0949375B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibrous web
- belt
- transfer
- transfer region
- suction
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F2/00—Transferring continuous webs from wet ends to press sections
-
- 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 an arrangement for transfer a fibrous web or a strip thereof from a moist tape to an air permeable Belt, the belts at least in the transfer area together run, separate after the transfer area and the receiving, air-permeable Tape is sucked on the side facing away from the fibrous web, according to Preamble of claim 1.
- Such an arrangement is used in particular in machines for the production and / or finishing of fibrous webs, especially paper, cardboard or tissue webs.
- the object of the invention is therefore to create an arrangement with the re-moistening while ensuring good web guidance the fibrous web is at least reduced.
- this is suitable a device with at least one transverse to the fibrous web and across the width of the suction zone, at which the belt taking over is led past.
- the suction zone is between the transfer area and the separation area relocatable, preferably swiveling. This enables the location to be adjusted the suction zone to the respective operating state in accordance with the above Method.
- the device has at least two separately controllable and also has suction zones extending transversely to the fibrous web.
- a suction zone is assigned to the transfer area and the separation area.
- the suction zones are also controlled in accordance with the claimed method.
- the transfer area After as a result of the widening strip through the entire fibrous web the transfer area is running, can be changed to the normal operating state. This means that the separation area is now at least predominantly vacuumed becomes. Since the entire fibrous web has greater stability, the suction can can be reduced or even discontinued in the transfer area. This saves not only energy but also reduces rewetting of the fibrous web in the Transfer area from the wet dispensing belt. Suctioning the takeover Band in the separation area, i.e. where the issuing tape has no contact has more with the fibrous web is sufficient for good web guidance.
- the receiving belt when transferring the entire fibrous web on the Side facing away from the fibrous web is preferably blown with air.
- the pressure the blowing should, however, only have a relatively low height.
- a third possibility, which can also be combined with the above-mentioned devices is that the taking over band over at least one across the fibrous web extending suction zone and the run of the dispensing belt is changeable in a form shifting the position of the transfer area.
- the transfer area depending on the operating state in the area the suction zone or in front of it in the direction of web travel.
- the suction zone of the transfer area should be connectable to a compressed air source.
- the suction zone of the transfer area does not have to cover the entire area Width of the fibrous web extend as it is only the transfer of a strip of it should support.
- a device is advantageously suitable as a device for accommodating the suction zones rotatable suction roll with perforated roll casing as for example in DE-OS 4023 297.
- the location of the suction zones can be varied.
- the fibrous web 1 or a strip 2 thereof is covered by transfer a moist belt 3 to an air-permeable belt 4, the belts 3, 4 run together at least in the transfer area 5, after the transfer area 5 separate and that the overlying, air-permeable tape 4 on the fibrous web 1 or the strip 2 facing away is sucked.
- This transfer can, for example, in the former, in the dryer section, in the press section or can be realized in between, the bands 3, 4 being air-permeable and have the shape of felt or sieve.
- the dispensing tape 3 can also airtight in the form of a smooth press belt.
- the suction zones 7, 9, 10, 11 generally extend transversely to the fibrous web 1 and if necessary also across their entire width.
- FIG. 1A shows a suction roll 12 with a suction zone 7 for this purpose.
- This suction zone 7 is when transferring a strip 2 of the fibrous web 1 in the transfer area 5 and partially arranged in the separation area 6.
- the suction zone 7 according to FIG. 1B is turned the corresponding suction chamber in the suction roller 12 to the separation area 6 rotated. In this position, the transfer of the entire fibrous web 1 can be reduced Rewet the fibrous web 1 from the dispensing belt 3.
- FIG. 2A / B shows a similar possibility, but with the takeover band 4 runs directly over the suction zones 7 and the sealing at the edges via sliding surfaces 13 takes place.
- the device with the sliding surfaces 13 and the suction zone 7 becomes corresponding in this case pivoted.
- FIG. 3 A / B the receiving belt 4 is moved over a suction zone 7 as in FIG. 1 A / B guided by a suction roller 12, which, however, is not designed to be rotatable here.
- this Example is the run of the releasing band 3 by changing the location of this wrapped guide rollers 14 changed such that a shift of Transfer area 5 results. This makes it possible for the transfer as shown in FIG. 3A a strip 2 the transfer area 5 in the area of the suction zone 7 bring.
- the transfer area can then 5 against the web running direction 8, so that now predominantly the separation area 6 is vacuumed.
- the suction roller 12 has three separately controllable Suction zones 9, 10 11, of which the suction zone 9 is assigned to the transfer area 5 is and is mainly activated only when a strip 2 is transferred, the suction zone 10 vacuumed the separation area 6 and mainly only when a fibrous web is transferred 1 works and the suction zone 11 the receiving belt 4 in front of the transfer area 5 sucked.
- the latter prevents the take-over of the air test layer Band 4 in the wrapping area of the fibrous web 1, so that a Transfer of the fibrous web 1 to this belt is possible faster.
Landscapes
- Advancing Webs (AREA)
- Paper (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
Die Erfindung betrifft eine Anordnung zur Übergabe einer Faserstoffbahn bzw. eines Streifens davon von einem feuchten Band an ein luftdurchlässiges Band, wobei die Bänder zumindest im Übergabebereich gemeinsam verlaufen, sich nach dem Übergabebereich trennen und das übernehmende, luftdurchlässige Band auf der der Faserstoffbahn abgewandten Seite besaugt ist, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an arrangement for transfer a fibrous web or a strip thereof from a moist tape to an air permeable Belt, the belts at least in the transfer area together run, separate after the transfer area and the receiving, air-permeable Tape is sucked on the side facing away from the fibrous web, according to Preamble of claim 1.
Anwendung findet eine derartige Anordnung insbesondere in Maschinen zur Herstellung und/oder Veredlung von Faserstoffbahnen, insbesondere Papier-, Karton- oder Tissuebahnen.Such an arrangement is used in particular in machines for the production and / or finishing of fibrous webs, especially paper, cardboard or tissue webs.
Vor allem beim Transport von feuchten Faserstoffbahnen beispielsweise in Pressenoder Trockenpartien von Papiermaschinen erfolgt insbesondere bei hohen Geschwindigkeiten eine Stützung der Faserstoffbahn an zumindest einem Band in Form eines Preßfilzes, Preßbandes, Trockensiebes oder ähnlichem. Damit wird der Lauf der Faserstoffbahn stabilisiert und einem Bahnabriß entgegengewirkt.Especially when transporting moist fibrous webs, for example in presses or Drying sections of paper machines take place particularly at high speeds a support of the fibrous web on at least one band in the form of a Press felt, press belt, dryer fabric or the like. This will run the fibrous web stabilized and counteracted a web break.
Die Übergabe der Faserstoffbahn von einem oft feuchten Band an ein Band auf der anderen Seite der Faserstoffbahn angeordnet, erfolgt, wie beispielsweise in der EP 519 920 oder DE 19511988 beschrieben, meist von Saugzonen unterstützt. Gleiches gilt beim Anlauf der Maschine, wenn ein immer breiter werdender Streifen der Faserstoffbahn durch die Maschine geführt wird. Da ein Streifen leichter handhabbar ist, vereinfacht sich somit die Einführung der gesamten Faserstoffbahn.The transfer of the fibrous web from an often moist belt to a belt on the other Arranged side of the fibrous web takes place, such as in EP 519 920 or DE 19511988, mostly supported by suction zones. The same applies when the machine starts up, when an increasingly wide strip of the fibrous web passes through the machine to be led. Since a strip is easier to handle, this is simplified Introduction of the entire fibrous web.
Dabei wird nicht nur die Faserstoffbahn im Übergabebereich an das übernehmende Band gesaugt, sondern auch Wasser vom abgebenden Band zur Faserstoffbahn geführt. Im Ergebnis kommt es zu einer unerwünschten Rückbefeuchtung der Faserstoffbahn.It is not only the fibrous web in the transfer area that is transferred to the recipient Belt sucked, but also water from the dispensing belt to the fibrous web. The result is undesirable rewetting of the fibrous web.
Die Aufgabe der Erfindung ist es daher eine Anordung zu schaffen, mit dem bzw. der unter Gewährleistung einer guten Bahnführung die Rückbefeuchtung der Faserstoffbahn zumindest verringert wird. The object of the invention is therefore to create an arrangement with the re-moistening while ensuring good web guidance the fibrous web is at least reduced.
Erfindungsgemäß wurde die Aufgabe durch die im Anspruch 1 beschriebene Anordnung sowie durch eine der in den Ansprüchen 4, 5 und 6 beschriebenen Vorrichtungen gelöst.According to the invention the object was achieved by the arrangement described in claim 1 and solved by one of the devices described in claims 4, 5 and 6.
Hierzu eignet sich u.a. eine Vorrichtung mit zumindest einer sich quer zur Faserstoffbahn und über deren Breite erstreckenden Saugzone, an der das übemehmende Band vorbeigeführt wird. Dabei ist die Saugzone zwischen Übergabebereich und Trennbereich verlagerbar, vorzugsweise schwenkbar. Dies ermöglicht eine Anpassung des Ortes der Saugzone an den jeweiligen Betriebszustand entsprechend den obenbeschriebenen Verfahren.Among other things, this is suitable a device with at least one transverse to the fibrous web and across the width of the suction zone, at which the belt taking over is led past. The suction zone is between the transfer area and the separation area relocatable, preferably swiveling. This enables the location to be adjusted the suction zone to the respective operating state in accordance with the above Method.
Es ist jedoch auch möglich, daß die Vorrichtung zumindest zwei separat steuerbare und sich ebenfalls quer zur Faserstoffbahn erstreckende Saugzonen besitzt. In diesem Fall ist dem Übergabebereich sowie dem Trennbereich je eine Saugzone zugeordnet. Die Ansteuerung der Saugzonen erfolgt ebenfalls entsprechend dem beanspruchten Verfahren.However, it is also possible that the device has at least two separately controllable and also has suction zones extending transversely to the fibrous web. In this case a suction zone is assigned to the transfer area and the separation area. The The suction zones are also controlled in accordance with the claimed method.
Dadurch, daß bei der Überführung eines Streifens der Faserstoffbahn zumindest der Übergabebereich besaugt ist und bei der nachfolgenden Überführung der gesamten Faserstoffbahn zumindest überwiegend der sich an den Übergabebereich anschließende Trennbereich besaugt ist, gelingt eine verbesserte Anpassung an die Erfordernisse der jeweiligen Betriebszustände. Bei der Einführung des Streifens der Faserstoffbahn kommt es auf eine besonders ausgeprägte Führung des Streifens an, da dieser im Hinblick auf einen Abriß sehr gefährdet ist. Dies bedeutet, daß insbesondere der Übergabebereich und gegebenenfalls auch der sich anschließende Trennbereich besaugt sein sollte. Dies unterstützt den Kontakt des Streifens der Faserstoffbahn mit dem übernehmenden Band im Übergabebereich und die Trennung vom abgebenden Band im Trennbereich. Dabei wird bewußt eine Rückbefeuchtung des Streifens in Kauf genommen, da dieser ohnehin Ausschuß darstellt.The fact that when transferring a strip of the fibrous web at least the Transfer area is vacuumed and in the subsequent transfer of the entire Fibrous web at least predominantly the one adjoining the transfer area Separation area is vacuumed, an improved adaptation to the requirements succeeds of the respective operating states. At the introduction of the strip of the fibrous web it comes down to a particularly pronounced guidance of the strip, since this with regard is very vulnerable to a demolition. This means that in particular the transfer area and, if appropriate, also the subsequent separation area can be vacuumed should. This supports the contact of the strip of the fibrous web with the receiving one Belt in the transfer area and separation from the belt in the Separating region. A rewetting of the strip is consciously accepted, since this is a committee anyway.
Nachdem in Folge des breiter werdenden Streifens die gesamte Faserstoffbahn durch den Übergabebereich läuft, kann in den normalen Betriebszustand übergegangen werden. Dies bedeutet, daß nunmehr zumindest überwiegend der Trennbereich besaugt wird. Da die gesamte Faserstoffbahn eine größere Stabilität aufweist, kann die Besaugung im Übergabebereich starkt reduziert oder sogar eingestellt werden. Dies spart nicht nur Energie sondern verringert auch die Rückbefeuchtung der Faserstoffbahn im Übergabebereich von dem feuchten abgebenden Band aus. Die Besaugung des übernehmenden Bandes im Trennbereich, d.h. dort wo das abgebende Band keinen Kontakt mehr mit der Faserstoffbahn hat, reicht für eine gute Bahnführung aus.After as a result of the widening strip through the entire fibrous web the transfer area is running, can be changed to the normal operating state. This means that the separation area is now at least predominantly vacuumed becomes. Since the entire fibrous web has greater stability, the suction can can be reduced or even discontinued in the transfer area. This saves not only energy but also reduces rewetting of the fibrous web in the Transfer area from the wet dispensing belt. Suctioning the takeover Band in the separation area, i.e. where the issuing tape has no contact has more with the fibrous web is sufficient for good web guidance.
Um der Rückbefeuchtung im Übergabebereich noch stärker entgegen zu wirken, kann das übernehmende Band beim Überführen der gesamten Faserstoffbahn auf der der Faserstoffbahn abgewandten Seite vorzugsweise mit Luft beblasen werden. Der Druck der Beblasung sollte jedoch nur eine relativ geringe Höhe aufweisen.To counteract the rewetting in the transfer area even more, can the receiving belt when transferring the entire fibrous web on the Side facing away from the fibrous web is preferably blown with air. The pressure the blowing should, however, only have a relatively low height.
Zur Gewährleistung eines möglichst schnellen Anhaftens der Faserstoffbahn bzw. eines Streifens davon am übemehmenden Band ist es von Vorteil insbesondere bei Bändern, die erst im Übergabebereich zusammengeführt werden, das übemehmende Band unmittelbar vor dem Übergabebereich zu besaugen. Hierdurch wird die in den Einlaufspalt zwischen dem Element mit der Saugzone und dem übernehmenden Band eingeschleppte Luft abgesaugt.To ensure that the fibrous web or one adheres as quickly as possible Strip of it on the tape taking over, it is particularly advantageous for tapes which are only brought together in the transfer area, the band taking over immediately to be sucked in front of the transfer area. As a result, the in the inlet gap introduced between the element with the suction zone and the receiving belt Sucked air.
Eine dritte Möglichkeit, die auch mit den obengenannten Vorrichtungen kombinierbar ist, besteht darin, daß das übemehmende Band über zumindest eine sich quer zur Faserstoffbahn erstreckende Saugzone geführt ist und der Lauf des abgebenden Bandes in einer die Lage des Übergabebereiches verschiebenden Form veränderbar ist. Damit soll ermöglicht werden, daß der Übergabebereich je nach Betriebszustand in den Bereich der Saugzone oder in Bahnlaufrichtung davor verlagert wird.A third possibility, which can also be combined with the above-mentioned devices is that the taking over band over at least one across the fibrous web extending suction zone and the run of the dispensing belt is changeable in a form shifting the position of the transfer area. In order to should be made possible that the transfer area depending on the operating state in the area the suction zone or in front of it in the direction of web travel.
Zur Absaugung der mitgeschleppten Luft des übernehmenden Bandes sollte außerdem in Bahnlaufrichtung vor der Saugzone des Übergabebereiches eine weitere, sich ebenfalls quer zur Faserstoffbahn erstreckende Saugzone vorhanden sein. Des weiteren sollte die Saugzone des Übergabebereiches mit einer Druckluftquelle verbindbar sein. Insbesondere die Saugzone des Übergabebereiches muß sich nicht über die gesamte Breite der Faserstoffbahn erstrecken, da sie nur die Überführung eines Streifens davon unterstützen soll.To extract the entrained air of the receiving belt should also in the direction of web travel in front of the suction zone of the transfer area, also itself Suction zone extending transversely to the fibrous web. Furthermore the suction zone of the transfer area should be connectable to a compressed air source. In particular, the suction zone of the transfer area does not have to cover the entire area Width of the fibrous web extend as it is only the transfer of a strip of it should support.
Als Vorrichtung zur Unterbringung der Saugzonen eignet sich vorteilhafterweise eine rotierbare Saugwalze mit perforiertem Walzenmantel wie beispielsweise in der DE-OS 4023 297 beschrieben. Die Lage der Saugzonen kann dabei variabel gestaltet werden. A device is advantageously suitable as a device for accommodating the suction zones rotatable suction roll with perforated roll casing as for example in DE-OS 4023 297. The location of the suction zones can be varied.
Eine weitere Möglichkeit besteht darin, daß das übernehmende Band direkt über die Saugzonen läuft und die Abdichtung an den Rändern über Gleitflächen erfolgt.Another possibility is that the receiving tape directly over the Suction zones are running and the edges are sealed using sliding surfaces.
Nachfolgend soll die Erfindung an mehreren Ausführungsbeispielen näher erläutert werden. In der beigefügten Zeichnung zeigt:
- Figur 1 A/B:
- eine Saugwalze 12 mit einer Saugzone 7;
- Figur 2 A/B:
- eine schwenkbare Saugvorrichtung;
- Figur 3 A/B:
- eine Übergabe mit Laufveränderung des abgebenden Bandes 3 und
- Figur 4:
- eine Saugwalze 12 mit mehren Sauzonen 9, 10 und 11.
- Figure 1 A / B:
- a suction roll 12 with a suction zone 7;
- Figure 2 A / B:
- a swiveling suction device;
- Figure 3 A / B:
- a handover with a change in the running volume 3 and
- Figure 4:
- a suction roller 12 with several sowing zones 9, 10 and 11.
In allen Ausführungsbeispielen wird die Faserstoffbahn 1 bzw. ein Streifen 2 davon von einem feuchten Band 3 an ein luftdurchlässiges Band 4 übergeben, wobei die Bänder 3, 4 zumindest im Übergabebereich 5 gemeinsam verlaufen, sich nach dem Übergabebereich 5 trennen und daß das übemehmende, luftdurchlässige Band 4 auf der der Faserstoffbahn 1 bzw. des Streifens 2 abgewandten Seite besaugt wird.In all exemplary embodiments, the fibrous web 1 or a strip 2 thereof is covered by transfer a moist belt 3 to an air-permeable belt 4, the belts 3, 4 run together at least in the transfer area 5, after the transfer area 5 separate and that the overlying, air-permeable tape 4 on the fibrous web 1 or the strip 2 facing away is sucked.
Diese Übergabe kann beispielsweise in dem Formerteil, in der Trockenpartie, der Pressenpartie oder dazwischen realisiert sein, wobei die Bänder 3, 4 luftdurchlässig sind und die Form von Filzen oder Sieben haben. Das abgebende Band 3 kann jedoch auch luftundurchlässig in Form eines glatten Preßbandes ausgeführt sein.This transfer can, for example, in the former, in the dryer section, in the press section or can be realized in between, the bands 3, 4 being air-permeable and have the shape of felt or sieve. The dispensing tape 3 can also airtight in the form of a smooth press belt.
Die Saugzonen 7, 9, 10, 11 erstrecken sich im allgemeinen quer zur Faserstoffbahn 1 und bei Bedarf auch über deren gesamte Breite.The suction zones 7, 9, 10, 11 generally extend transversely to the fibrous web 1 and if necessary also across their entire width.
Kennzeichnend ist außerdem bei der Überführung eines Streifens 2 der Faserstoffbahn 1 zumindest der Übergabebereich 5 besaugt ist und bei der nachfolgenden Überführung der gesamten Faserstoffbahn 1 zumindest überwiegend der sich an den Übergabebereich 5 anschließende Trennbereich 6 besaugt ist.It is also characteristic for the transfer of a strip 2 of the fibrous web 1 at least the transfer area 5 is vacuumed and during the subsequent transfer of the entire fibrous web 1 at least predominantly to the transfer area 5 subsequent separation area 6 is vacuumed.
Figur 1 A zeigt hierzu eine Saugwalze 12 mit einer Saugzone 7. Diese Saugzone 7 ist bei der Überführung eines Streifens 2 der Faserstoffbahn 1 im Übergabebereich 5 und teilweise im Trennbereich 6 angeordnet. FIG. 1A shows a suction roll 12 with a suction zone 7 for this purpose. This suction zone 7 is when transferring a strip 2 of the fibrous web 1 in the transfer area 5 and partially arranged in the separation area 6.
Nach dem Breitfahren des Streifens 2 wird die Saugzone 7 gemäß Figur 1 B durch Drehung der entsprechenden Saugkammer in der Saugwalze 12 zum Trennbereich 6 gedreht. In dieser Stellung kann die Überführung der gesamten Faserstoffbahn 1 bei geringerer Rückbefeuchtung der Faserstoffbahn 1 vom abgebenden Band 3 aus erfolgen.After the strip 2 has been widened, the suction zone 7 according to FIG. 1B is turned the corresponding suction chamber in the suction roller 12 to the separation area 6 rotated. In this position, the transfer of the entire fibrous web 1 can be reduced Rewet the fibrous web 1 from the dispensing belt 3.
Figur 2 A/B zeigt eine ähnliche Möglichkeit, wobei jedoch das übernehmende Band 4 direkt über die Saugzonen 7 läuft und die Abdichtung an den Rändern über Gleitflächen 13 erfolgt.FIG. 2A / B shows a similar possibility, but with the takeover band 4 runs directly over the suction zones 7 and the sealing at the edges via sliding surfaces 13 takes place.
Die Vorrichtung mit den Gleitflächen 13 sowie der Saugzone 7 wird in diesem Fall entsprechend verschwenkt.The device with the sliding surfaces 13 and the suction zone 7 becomes corresponding in this case pivoted.
In Figur 3 A/B wird das übernehmende Band 4 wie in Figur 1 A/B über eine Saugzone 7 einer Saugwalze 12 geführt, die hier jedoch nicht verdrehbar gestaltet ist. Bei diesem Beispiel wird der Lauf des abgebenden Bandes 3 durch Ortsveränderung der von diesem umschlungenen Leitwalzen 14 derart verändert, daß sich eine Verschiebung des Übergabebereiches 5 ergibt. Dies ermöglicht es wie in Figur 3A gezeigt bei der Überführung eines Streifens 2 den Übergabebereich 5 in den Bereich der Saugzone 7 zu bringen.In FIG. 3 A / B, the receiving belt 4 is moved over a suction zone 7 as in FIG. 1 A / B guided by a suction roller 12, which, however, is not designed to be rotatable here. With this Example is the run of the releasing band 3 by changing the location of this wrapped guide rollers 14 changed such that a shift of Transfer area 5 results. This makes it possible for the transfer as shown in FIG. 3A a strip 2 the transfer area 5 in the area of the suction zone 7 bring.
Bei Überführung der Faserstoffbahn 1 gemäß Figur 3B kann dann der Übergabebereich 5 entgegen der Bahnlaufrichtung 8 verschoben werden, so daß nunmehr überwiegend der Trennbereich 6 besaugt wird.When transferring the fibrous web 1 according to FIG. 3B, the transfer area can then 5 against the web running direction 8, so that now predominantly the separation area 6 is vacuumed.
Bei der in Figur 4 gezeigten Ausführung besitzt die Saugwalze 12 drei separat steuerbare Saugzonen 9, 10 11, von denen die Saugzone 9 dem Übergabebereich 5 zugeordnet ist und vorwiegend nur bei Überführung eines Streifens 2 aktiviert ist, die Saugzone 10 den Trennbereich 6 besaugt und vorwiegend nur bei Überführung einer Faserstoffbahn 1 arbeitet und die Saugzone 11 das übernehmende Band 4 vor dem Übergabebereich 5 besaugt. Letzteres verhindert das Einziehen der Luftgenzschicht des übernehmenden Bandes 4 in den Umschlingungsbereich der Faserstoffbahn 1, so daß eine Übergabe der Faserstoffbahn 1 an dieses Band schneller möglich wird.In the embodiment shown in Figure 4, the suction roller 12 has three separately controllable Suction zones 9, 10 11, of which the suction zone 9 is assigned to the transfer area 5 is and is mainly activated only when a strip 2 is transferred, the suction zone 10 vacuumed the separation area 6 and mainly only when a fibrous web is transferred 1 works and the suction zone 11 the receiving belt 4 in front of the transfer area 5 sucked. The latter prevents the take-over of the air test layer Band 4 in the wrapping area of the fibrous web 1, so that a Transfer of the fibrous web 1 to this belt is possible faster.
Claims (7)
- Arrangement for transferring a fibrous web (1) or a strip (2) of the latter from a moist belt (3) to an air-permeable belt (4), the belts (3, 4) running together, at least in the transfer region (5), separating after the transfer region (5) and the accepting, air-permeable belt (4) having vacuum applied to it on the side facing away from the fibrous web (1), vacuum being applied at least to the transfer region (5) during the transfer of a strip (2) of the fibrous web (1) and, during the subsequent transfer of the entire fibrous web (1), vacuum being applied at least predominantly to the separating region (6) following the transfer region (5), characterized in that the accepting belt (4) is led past at least one suction zone (7) which extends transversely with respect to the fibrous web (1) and can be moved, preferably pivoted, between the transfer region (5) and a separating region (6) which follows in the web running direction (8), or the accepting belt (4) in the transfer region (5) and in the separating region (6) that follows the latter in the web running direction (8) being guided along in each case over a suction zone (9, 10) which can be controlled separately and extends transversely with respect to the fibrous web (1).
- Arrangement according to Claim 1, characterized in that, in particular in the case of belts (3, 4) which are led together only in the transfer region (5), vacuum is applied to the accepting belt (4) immediately before the transfer region (5).
- Arrangement according to Claim 1 or 2, characterized in that the accepting belt (4) preferably has air blown onto it on the side facing away from the fibrous web (1) during the transfer of the entire fibrous web (1) in the transfer region (5).
- Arrangement according to one of the preceding claims, characterized in that, before the transfer region (5), the accepting belt (4) is guided over a suction zone (11) that extends transversely with respect to the fibrous web (1).
- Arrangement according to one of the preceding claims, characterized in that the suction zone (7, 9) can be supplied with compressed air in the transfer region (5).
- Arrangement according to one of Claims 1 to 5, characterized in that the suction zones (7, 9, 10) are arranged in a rotating suction roll (12) with a perforated roll shell.
- Arrangement according to one of Claims 1 to 5, characterized in that the accepting belt (4) runs directly over the suction zones (7) and sealing is carried out at the edges by sliding surfaces (13).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19815994A DE19815994A1 (en) | 1998-04-09 | 1998-04-09 | Handover of a fibrous web |
| DE19815994 | 1998-04-09 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0949375A2 EP0949375A2 (en) | 1999-10-13 |
| EP0949375A3 EP0949375A3 (en) | 2000-03-22 |
| EP0949375B1 true EP0949375B1 (en) | 2004-06-16 |
| EP0949375B9 EP0949375B9 (en) | 2004-12-22 |
Family
ID=7864155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99105219A Expired - Lifetime EP0949375B9 (en) | 1998-04-09 | 1999-03-13 | Arrangement for transferring a fibrous web |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6336996B1 (en) |
| EP (1) | EP0949375B9 (en) |
| JP (1) | JPH11314817A (en) |
| CA (1) | CA2268528A1 (en) |
| DE (2) | DE19815994A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1020169A1 (en) * | 1999-01-16 | 2000-07-19 | The Procter & Gamble Company | Apparatus and process for applying discrete portions of a web material onto a receiving web |
| DE19955030A1 (en) * | 1999-11-16 | 2001-05-17 | Voith Paper Patent Gmbh | Transfer of paper/cardboard web between stations in papermaking/cardboard machine, comprises shifting movements of delivery and pick-up belts for clean and rapid transfer without loss of production time |
| EP1158092B1 (en) * | 2000-05-24 | 2006-09-06 | Voith Paper Patent GmbH | Drying section |
| US7904454B2 (en) * | 2001-07-16 | 2011-03-08 | International Business Machines Corporation | Database access security |
| US6743334B2 (en) * | 2002-06-11 | 2004-06-01 | Metso Paper Karlstad Aktiebolag (Ab) | Method and apparatus for making a tissue paper with improved tactile qualities while improving the reel-up process for a high bulk web |
| FI115849B (en) * | 2002-08-28 | 2005-07-29 | Metso Paper Inc | Arrangement of wire section of paper or board machine |
| US7970788B2 (en) * | 2005-08-02 | 2011-06-28 | International Business Machines Corporation | Selective local database access restriction |
| US7933923B2 (en) | 2005-11-04 | 2011-04-26 | International Business Machines Corporation | Tracking and reconciling database commands |
| US8141100B2 (en) | 2006-12-20 | 2012-03-20 | International Business Machines Corporation | Identifying attribute propagation for multi-tier processing |
| US8495367B2 (en) | 2007-02-22 | 2013-07-23 | International Business Machines Corporation | Nondestructive interception of secure data in transit |
| US8261326B2 (en) | 2008-04-25 | 2012-09-04 | International Business Machines Corporation | Network intrusion blocking security overlay |
| US9710097B2 (en) | 2009-07-10 | 2017-07-18 | Adobe Systems Incorporated | Methods and apparatus for natural media painting using touch-and-stylus combination gestures |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1178691B (en) * | 1958-07-11 | 1964-09-24 | Doerries A G O | Device for transferring the paper web from the fourdrinier wire of a paper machine into the press section by means of compressed air |
| DE1180237B (en) * | 1961-01-16 | 1964-10-22 | Karlstad Mekaniska Ab | Paper machine |
| DE1901450B1 (en) * | 1969-01-13 | 1970-06-04 | Zum Bruderhaus Gmbh Maschf | Device for transferring a web produced from a pulp suspension from the machine screen of a wire section to a roller located in the following press section |
| US4921575A (en) | 1989-09-25 | 1990-05-01 | Beloit Corporation | Couch press transfer apparatus |
| DE4023297A1 (en) | 1990-07-21 | 1992-01-23 | Voith Gmbh J M | Single fourdrinier paper drying section - has third sealing bar at separation point from suction roller to hold web and fourdrinier together |
| US5281308A (en) | 1992-04-20 | 1994-01-25 | Beloit Technologies, Inc. | Pick-up roll apparatus |
| DE19511988C1 (en) * | 1995-03-31 | 1996-08-01 | Voith Sulzer Papiermasch Gmbh | Paper mfg. press section for improved drainage and availability |
| DE19544882C2 (en) * | 1995-12-01 | 2001-01-11 | Voith Sulzer Papiermasch Gmbh | Web take-off device |
| US5718806A (en) * | 1996-09-03 | 1998-02-17 | The Procter & Gamble Company | Vacuum apparatus having flow management device for controlling the rate of application of vacuum pressure in a through air drying papermaking process |
| US5762759A (en) * | 1997-01-27 | 1998-06-09 | Beloit Technologies, Inc. | Tail threading system for a papermaking machine |
-
1998
- 1998-04-09 DE DE19815994A patent/DE19815994A1/en not_active Withdrawn
-
1999
- 1999-03-13 EP EP99105219A patent/EP0949375B9/en not_active Expired - Lifetime
- 1999-03-13 DE DE59909715T patent/DE59909715D1/en not_active Expired - Fee Related
- 1999-04-06 US US09/286,296 patent/US6336996B1/en not_active Expired - Fee Related
- 1999-04-08 JP JP11100899A patent/JPH11314817A/en active Pending
- 1999-04-08 CA CA002268528A patent/CA2268528A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0949375A3 (en) | 2000-03-22 |
| CA2268528A1 (en) | 1999-10-09 |
| JPH11314817A (en) | 1999-11-16 |
| US6336996B1 (en) | 2002-01-08 |
| DE59909715D1 (en) | 2004-07-22 |
| EP0949375A2 (en) | 1999-10-13 |
| EP0949375B9 (en) | 2004-12-22 |
| DE19815994A1 (en) | 1999-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0989232B1 (en) | Drying section | |
| EP0949375B9 (en) | Arrangement for transferring a fibrous web | |
| DE112009000701T5 (en) | Method and apparatus for transferring a fibrous web from one support fabric to another | |
| DE4004331C1 (en) | ||
| DE4026021A1 (en) | Paper-making press section | |
| DE19651191A1 (en) | Papermaking machine drying section | |
| EP3622112A1 (en) | Device and method for producing a fibrous web | |
| EP1478806B1 (en) | Smoothing device | |
| AT521367B1 (en) | DEVICE AND METHOD FOR CONVERTING A STRIP OF A TRAIN | |
| DE4335024C2 (en) | Press section of a paper machine and transfer device | |
| DE19654434A1 (en) | Machine for making a continuous web of fibrous material, especially paper or paper board | |
| AT521368B1 (en) | DEVICE AND METHOD FOR CONVERTING A STRIP OF A TRAIN | |
| EP1586700B1 (en) | Paper machine | |
| EP0689627A1 (en) | Traction-free web transport in a compression section | |
| DE9011940U1 (en) | Press section of a paper machine | |
| DE10137095A1 (en) | Machine for the production of a fibrous web | |
| WO2010086234A1 (en) | Device for producing a material web | |
| EP1777340B1 (en) | Pressing arrangement | |
| DE10314296A1 (en) | Web transfer between a fourdrinier and a blanket, at the press section of a machine for the production/finishing of paper/cardboard/tissue, takes the full uncut web width at a suction cylinder with pressure at the web edges | |
| DE19959669A1 (en) | Drying section for e.g. paper web has transfer point where components are slightly spaced apart and run at differing speeds | |
| EP4256127A1 (en) | Paper machine | |
| WO2025093356A1 (en) | Capillary dewatering device | |
| EP1731666A1 (en) | Paper machine | |
| DE10149563A1 (en) | web guide | |
| EP0764738A1 (en) | Process and machine for making fibrous webs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FI SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| 17P | Request for examination filed |
Effective date: 20000922 |
|
| AKX | Designation fees paid |
Free format text: DE FI SE |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VOITH PAPER PATENT GMBH |
|
| 17Q | First examination report despatched |
Effective date: 20020719 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| RTI1 | Title (correction) |
Free format text: ARRANGEMENT FOR TRANSFERRING A FIBROUS WEB |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FI SE |
|
| REF | Corresponds to: |
Ref document number: 59909715 Country of ref document: DE Date of ref document: 20040722 Kind code of ref document: P |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20050317 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20060314 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20060315 Year of fee payment: 8 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070313 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070314 |
|
| EUG | Se: european patent has lapsed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071002 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20060314 Year of fee payment: 8 |