EP0785306B1 - Apparatus for guiding web material - Google Patents

Apparatus for guiding web material Download PDF

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Publication number
EP0785306B1
EP0785306B1 EP96117463A EP96117463A EP0785306B1 EP 0785306 B1 EP0785306 B1 EP 0785306B1 EP 96117463 A EP96117463 A EP 96117463A EP 96117463 A EP96117463 A EP 96117463A EP 0785306 B1 EP0785306 B1 EP 0785306B1
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EP
European Patent Office
Prior art keywords
web
stabilizer
material web
conveyor belt
air
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EP96117463A
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German (de)
French (fr)
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EP0785306A2 (en
EP0785306A3 (en
Inventor
Wolfgang Mueller
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Voith Patent GmbH
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Voith Paper Patent GmbH
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices

Definitions

  • the invention relates to an arrangement for guiding a material web, in particular a fibrous web, according to the preamble of claim 1.
  • the blow box is formed in several parts and the individual elements of the blow box are arranged one behind the other in the direction of travel of the material web and are adjustable independently of one another, can provide an optimal seal against the environment.
  • FIGS. 1 and 2 The arrangement for guiding described below a web of material can be used in general. It is made using a paper making machine explained, which has a dryer section, in which the material or paper web together with one also as a dry felt or sieve designated conveyor belt meandering around the drying cylinder and web guide rollers is guided.
  • the designs shown in FIGS. 1 and 2 are not Part of the invention, should be the understanding of Facilitate invention.
  • Figure 1 shows a section of a dryer section a paper making machine with a Arrangement 1 for guiding a material web respectively Paper web 3, which together with a Conveyor belt 5 from a first drying cylinder 7 via a web guide roller 9 to a second drying cylinder 11 is performed, in the area of Drying cylinder 7, 11 the material web on the cylinder surface rests and in the area of the web guide roller 9 the conveyor belt 5.
  • a first free running distance 13 is formed between the web guide roller 9 and the second drying cylinder 11 a second free running route 15.
  • a web stabilizer 17 provided, which is designed, for example, as a suction box and is the area of the free running track 13 and 15 and also the web guide roller 9 can suck.
  • the web stabilizer 17 Through the web stabilizer 17 the paper web 3 on the conveyor belt 5 in the area the free running routes 13 and 15 stabilized. If the web guide roller 9 from the web stabilizer 17 is sucked, is also on the surface the web guide roller 9 guided material web sucked on the conveyor belt 5 and thus stabilized.
  • the web stabilizer can also be used as a transfer foil or air guide box be that of transferring the paper web from the first Drying cylinder 7 on the web guide roller 9 and / or from the web guide roller 9 to the subsequent token cylinder 11 and serves to transfer the paper web with negative and / or positive pressure respectively Blowing air can be acted upon.
  • the web stabilizer 17 extends essentially over the entire width of the paper web 3.
  • a separate one Blow box 21 provided on both in the area of the edge of the Paper web 3 sides.
  • the one shown in Figure 1 Blow box 21 is on the side wall 23 of the railway stabilizer 17 attached.
  • the blow box 21 is so attached that it is independent of the web stabilizer 17 aligned and adjusted can.
  • the one shown in this embodiment The blow box 21 is the opening nip 25 between the surface of the drying cylinder 7 and assigned to the running paper web 3. He is with provided a supply air connection Z and has at least one towards the conveyor belt 5 opening blowing nozzle, which is shown in more detail with reference to FIG 4 is explained.
  • the blow box 21 is by means of Supply air connection Z is supplied with air from the for example, a web stabilizer designed as a suction box 17 aspirated and / or from a separate Compressed air supply device, for example a compressor. It will an exemplary embodiment of the arrangement is preferred, where the blow box 21 exclusively with the Air drawn off by the web stabilizer 17 is supplied will, which builds up the dryer section simplified and safe transfer of the paper web 5 -also at high production speeds- is guaranteed.
  • Figure 2 shows a modified version of a Arrangement 1 for guiding a material web respectively Paper web 3.
  • the cylinders around which the Paper web 3 together with a conveyor belt 5 have the same diameter here. They can both be designed as drying cylinders 7 and 7 ' his.
  • the free running distance 13 between the two drying cylinders 7 and 7 ' is also here assigned a web stabilizer 17, however does not affect the free running distance by the drying cylinder 7 'runs.
  • the web stabilizer 17 extends as in FIG Figure 1 explained across the entire width of the paper making machine.
  • a blow box 21 is attached in the area the edge of the paper web 3 is arranged.
  • the blow box 21 points here, unlike that in FIG. 1 shown, two supply air connections Z 1 and Z 2.
  • Figure 3 again shows a section of a Machine for the production of a material web respectively a paper making machine, inside of which a paper web 3 is guided over two rollers becomes.
  • the paper web 3 from a deflection roller 27 to a drying cylinder 7 are performed, the diameter of which is essential is larger than that of the deflection roller 27.
  • the deflection roller 27 can serve as a web guide roller. Is conceivable it also to heat them.
  • blow box 21 'and 21' ' has one Supply air connection Z on.
  • the blow box 21 is too arranged here in the region of the edge of the paper web 3.
  • the blow box shown in Figure 3 is characterized by the fact that it covers the entire Length of the free running path 13 extends and thus both on the running nip 26 and can act on the accumulating nip 25 in which the Material web on the surface of the drying cylinder 7 accumulates. Because of the drying cylinder 7 and the material web entrained air an overpressure in the nip 25.
  • FIG. 4 finally shows a cross section through a blow box 21. It can be seen that this has a housing 29 which is suitable is connected to an air supply device, so that there is an overpressure within the housing 29 is.
  • the air passes through an outlet slot 31 from which is close to a curved Housing section 33 opens.
  • the outlet slot 31 is designed so that the air on the curved Flows along housing section 33 and from a lying between housing 29 and conveyor belt 5 Gap 35 emerges.
  • the air is directed in such a way that in the space 37 between web stabilizer 17 and conveyor belt 5 a negative pressure built up or by the web stabilizer 17 still existing is strengthened.
  • the Blow box 21 is in the region of the edge 39 of the material web or paper web 3 arranged and in particular brings about safe guidance the web edge, so that a flutter and thus the Danger of a web break practically completely avoided can be.
  • the conveyor belt 5 is in two positions shown: The is with solid lines Rest position of the conveyor belt 5 shown with dashed lines Lines its working position.
  • Figure 4 clearly shows that the Blow box 21 on a side wall 23 of the web stabilizer 17 is attached regardless of this compared to the conveyor belt 5 and the paper web 3 can be adjusted and adjusted.
  • the arrangement of the outlet slot 31 can also be so be chosen so that the outflowing air is optimal abuts the curved housing section 33 and the space 37 is safe from the outside environment of the papermaking machine delimits such that a negative pressure builds up there becomes.
  • blow box preferably on both sides of the Web stabilizer 17 blow box can be attached, as shown in the figures. Since the Blow boxes separate from the web stabilizer trained, the blow boxes can be independent from this to the conveyor belt 5 respectively the paper web 3 are aligned, so that safe vacuum generation on the sides the paper web 3 is guaranteed. If the blow box is formed in several parts or more small blow boxes one behind the other in the area of one free running track can be arranged adjusted independently of each other and thus optimal the course of conveyor belt 5 and paper web 3 be adjusted.
  • blow boxes with practically any designed track stabilizers interact and can therefore be used universally.

Landscapes

  • Paper (AREA)
  • Advancing Webs (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung betrifft eine Anordnung zum Führen einer Materialbahn, insbesondere einer Faserstoffbahn, gemäß Oberbegriff des Anspruchs 1.The invention relates to an arrangement for guiding a material web, in particular a fibrous web, according to the preamble of claim 1.

Vorrichtungen der hier angesprochenen Art sind bekannt (vgl. US-A-4 893 741 oder US-A-4 809 445). Sie dienen dazu, die Materialbahn innerhalb einer Maschine zur Herstellung der Materialbahn so zu führen, daß auch bei hohen Maschinengeschwindigkeiten ein Bahnflattern beziehungsweise -abriß sicher vermieden wird. Es hat sich herausgestellt, daß nicht in allen Fällen eine optimale Abdichtung der Anordnung zum Führen der Materialbahn gewährleistet werden kann.Devices of the type mentioned here are known (see US-A-4,893,741 or US-A-4,809,445). They serve the material web within a manufacturing machine to run the material web so that even at high Machine speeds a web flutter respectively - demolition is safely avoided. It has it turned out that not in all cases optimal sealing of the arrangement for guiding the Material web can be guaranteed.

Es ist daher Aufgabe der Erfindung, eine Anordnung der eingangs genannten Art zu schaffen, die diese Nachteile nicht aufweist.It is therefore an object of the invention to provide an arrangement of the kind mentioned at the beginning, which create this Does not have disadvantages.

Zur Lösung dieser Aufgabe wird eine Anordnung zum Führen einer Materialbahn vorgeschlagen, die die in Anspruch 1 genannten Merkmale aufweist. To solve this problem, an arrangement for Run a web of material that is suggested in Features mentioned claim 1.

Dadurch, daß der Blaskasten mehrteilig ausgebildet ist und die einzelnen Elemente des Blaskastens in Laufrichtung der Materialbahn gesehen-hintereinander angeordnet und unabhängig voneinander justierbar sind, kann eine optimale Abdichtung gegenüber der Umgebung erfolgen.As a result of that the blow box is formed in several parts and the individual elements of the blow box are arranged one behind the other in the direction of travel of the material web and are adjustable independently of one another, can provide an optimal seal against the environment.

Weitere Ausgestaltungen ergeben sich aus den übrigen Unteranspruchen.Further configurations result from the others Dependent claims.

Die Erfindung wird im folgenden anhand der Zeichnung naher erläutert. Es zeigen:

Figuren 1 bis 3
drei Ausführungsbeispiele einer Anordnung zum Führen einer Materialbahn und
Figur 4
einen Querschnitt durch eine in den Figuren 1 bis 3 dargestellte Anordnung.
The invention is explained in more detail below with reference to the drawing. Show it:
Figures 1 to 3
three embodiments of an arrangement for guiding a material web and
Figure 4
a cross section through an arrangement shown in Figures 1 to 3.

Die im folgenden beschriebene Anordnung zum Führen einer Materialbahn kann allgemein eingesetzt werden. Sie wird anhand einer Papierherstellungsmaschine erläutert, die eine Trockenpartie aufweist, in der die Material- beziehungsweise Papierbahn gemeinsam mit einem auch als Trockenfilz oder -sieb bezeichneten Transportband mäanderförmig um Trokkenzylinder und Bahnleitwalzen geführt wird. Die in den Figuren 1 und 2 gezeigten Ausführungen sind nicht Teil der Erfindung, sollen ober das Verstondnis der Erfindung erleichken.The arrangement for guiding described below a web of material can be used in general. It is made using a paper making machine explained, which has a dryer section, in which the material or paper web together with one also as a dry felt or sieve designated conveyor belt meandering around the drying cylinder and web guide rollers is guided. The designs shown in FIGS. 1 and 2 are not Part of the invention, should be the understanding of Facilitate invention.

Figur 1 zeigt einen Ausschnitt aus einer Trockenpartie einer Papierherstellungsmaschine mit einer Anordnung 1 zum Führen einer Materialbahn beziehungsweise Papierbahn 3, die gemeinsam mit einem Transportband 5 von einem ersten Trockenzylinder 7 über eine Bahnleitwalze 9 zu einem zweiten Trockenzylinder 11 geführt wird, wobei im Bereich der Trockenzylinder 7, 11 die Materialbahn auf der Zylinderoberfläche aufliegt und im Bereich der Bahnleitwalze 9 das Transportband 5. Zwischen dem ersten Trockenzylinder 7 und der Bahnleitwalze 9 entsteht eine erste freie Laufstrecke 13 und zwischen der Bahnleitwalze 9 und dem zweiten Trockenzylinder 11 eine zweite freie Laufstrecke 15. Zwischen den Laufstrecken 13 und 15 ist ein Bahnstabilisator 17 vorgesehen, der beispielsweise als Saugkasten ausgebildet ist und der den Bereich der freien Laufstrecke 13 und 15 sowie auch die Bahnleitwalze 9 besaugen kann. Durch den Bahnstabilisator 17 wird die Papierbahn 3 auf dem Transportband 5 im Bereich der freien Laufstrecken 13 und 15 stabilisiert. Wenn auch die Bahnleitwalze 9 von dem Bahnstabilisator 17 besaugt wird, wird auch die über die Oberfläche der Bahnleitwalze 9 geführte Materialbahn auf dem Transportband 5 angesaugt und damit stabilisiert. Der Bahnstabilisator kann auch als Transferfoil beziehungsweise Luftleitkasten ausgebildet sein, der dem Überführen der Papierbahn vom ersten Trockenzylinder 7 auf die Bahnleitwalze 9 und/oder von der Bahnleitwalze 9 auf den nachfolgenden Tokkenzylinder 11 dient und der zum Überführen der Papierbahn mit Unter- und/oder Überdruck beziehungsweise Blasluft beaufschlagbar ist.Figure 1 shows a section of a dryer section a paper making machine with a Arrangement 1 for guiding a material web respectively Paper web 3, which together with a Conveyor belt 5 from a first drying cylinder 7 via a web guide roller 9 to a second drying cylinder 11 is performed, in the area of Drying cylinder 7, 11 the material web on the cylinder surface rests and in the area of the web guide roller 9 the conveyor belt 5. Between the first Drying cylinder 7 and the web guide roller 9 is formed a first free running distance 13 and between the web guide roller 9 and the second drying cylinder 11 a second free running route 15. Between the Running tracks 13 and 15 is a web stabilizer 17 provided, which is designed, for example, as a suction box and is the area of the free running track 13 and 15 and also the web guide roller 9 can suck. Through the web stabilizer 17 the paper web 3 on the conveyor belt 5 in the area the free running routes 13 and 15 stabilized. If the web guide roller 9 from the web stabilizer 17 is sucked, is also on the surface the web guide roller 9 guided material web sucked on the conveyor belt 5 and thus stabilized. The web stabilizer can also be used as a transfer foil or air guide box be that of transferring the paper web from the first Drying cylinder 7 on the web guide roller 9 and / or from the web guide roller 9 to the subsequent token cylinder 11 and serves to transfer the paper web with negative and / or positive pressure respectively Blowing air can be acted upon.

Bei dem hier dargestellten Ausfuhrungsbeispiel wird davon ausgegangen, daß sich der erste Trockenzylinder 7 und der zweite Trockenzylinder 11 gegen den Uhrzeigersinn bewegen. Entsprechend ist nahe dem Ablaufpunkt A, in dem das Transportband 5 und die Papierbahn 3 von der Oberfläche des Trockenzylinder 11 abheben, eine Luftleiteinrichtung 19 in Form eines Schabers vorgesehen, die die von dem Transportband 5 mitgerissene Luft abträgt, so daß diese nicht in den Bereich des Bahnstabilisators 7 gelangt.In the exemplary embodiment shown here assumed that the first drying cylinder 7 and the second drying cylinder 11 move counterclockwise. Corresponding is close to process point A, where the Conveyor belt 5 and the paper web 3 from the surface of the drying cylinder 11, an air guiding device 19 provided in the form of a scraper, which the entrained by the conveyor belt 5 Removes air so that it does not fall into the range of Railway stabilizer 7 arrives.

Der Bahnstabilisator 17 erstreckt sich im wesentlichen über die gesamte Breite der Papierbahn 3. Vorzugsweise an beiden im Bereich des Randes der Papierbahn 3 gelegenen Seiten ist ein separater Blaskasten 21 vorgesehen. Der in Figur 1 dargestellte Blaskasten 21 ist an der Seitenwand 23 des Bahnstabilisators 17 befestigt. Der Blaskasten 21 ist so angebracht, daß er unabhängig von dem Bahnstabilisator 17 ausgerichtet und justiert werden kann. Der in diesem Ausführungsbeispiel dargestellte Blaskasten 21 ist dem sich offenden Nip 25 zwischen der Oberfläche des Trockenzylinders 7 und der ablaufenden Papierbahn 3 zugeordnet. Er ist mit einem Zuluftanschluß Z versehen und weist mindestens eine sich in Richtung zum Transportband 5 öffnende Blasdüse auf, die anhand von Figur 4 näher erläutert wird. Der Blaskasten 21 wird mittels des Zuluftanschlusses Z mit Luft versorgt, die von dem, beispielsweise als Saugkasten ausgebildeten Bahnstabilisator 17 abgesaugt und/oder von einer separaten Druckluft-Versorgungseinrichtung beispielsweise einem Kompressor, angeliefert wird. Es wird ein Ausfuhrungsbeispiel der Anordnung bevorzugt, bei dem der Blaskasten 21 ausschließlich mit der von dem Bahnstabilisator 17 abgesaugten Luft versorgt wird, wodurch der Aufbau der Trockenpartie vereinfacht und ein sicheres Überführen der Papierbahn 5 -auch bei hohen Herstellungsgeschwindigkeiten- gewährleistet ist.The web stabilizer 17 extends essentially over the entire width of the paper web 3. Preferably on both in the area of the edge of the Paper web 3 sides is a separate one Blow box 21 provided. The one shown in Figure 1 Blow box 21 is on the side wall 23 of the Railway stabilizer 17 attached. The blow box 21 is so attached that it is independent of the web stabilizer 17 aligned and adjusted can. The one shown in this embodiment The blow box 21 is the opening nip 25 between the surface of the drying cylinder 7 and assigned to the running paper web 3. He is with provided a supply air connection Z and has at least one towards the conveyor belt 5 opening blowing nozzle, which is shown in more detail with reference to FIG 4 is explained. The blow box 21 is by means of Supply air connection Z is supplied with air from the for example, a web stabilizer designed as a suction box 17 aspirated and / or from a separate Compressed air supply device, for example a compressor. It will an exemplary embodiment of the arrangement is preferred, where the blow box 21 exclusively with the Air drawn off by the web stabilizer 17 is supplied will, which builds up the dryer section simplified and safe transfer of the paper web 5 -also at high production speeds- is guaranteed.

Figur 2 zeigt eine abgewandelte Ausführung einer Anordnung 1 zum Führen einer Materialbahn beziehungsweise Papierbahn 3. Die Zylinder, um die die Papierbahn 3 gemeinsam mit einem Transportband 5 geführt wird, haben hier den gleichen Durchmesser. Sie können beide als Trockenzylinder 7 und 7' ausgebildet sein. Der freien Laufstrecke 13 zwischen den beiden Trockenzylindern 7 und 7' ist auch hier ein Bahnstabilisator 17 zugeordnet, der allerdings nicht auf die freie Laufstrecke einwirkt, die von dem Trockenzylinder 7' ablauft.Figure 2 shows a modified version of a Arrangement 1 for guiding a material web respectively Paper web 3. The cylinders around which the Paper web 3 together with a conveyor belt 5 have the same diameter here. They can both be designed as drying cylinders 7 and 7 ' his. The free running distance 13 between the two drying cylinders 7 and 7 'is also here assigned a web stabilizer 17, however does not affect the free running distance by the drying cylinder 7 'runs.

Der Bahnstabilisator 17 erstreckt sich, wie der in Figur 1 erläuterte, über die gesamte Breite der Papierherstellungsmaschine. An seiner Seitenwand 23' ist ein Blaskasten 21 angebracht, der im Bereich des Randes der Papierbahn 3 angeordnet ist. Der Blaskasten 21 weist hier, anders als der in Figur 1 gezeigte, zwei Zuluftanschlüsse Z 1 und Z 2 auf.The web stabilizer 17 extends as in FIG Figure 1 explained across the entire width of the paper making machine. On its side wall 23 ' a blow box 21 is attached in the area the edge of the paper web 3 is arranged. The The blow box 21 points here, unlike that in FIG. 1 shown, two supply air connections Z 1 and Z 2.

Den beiden in den Figuren 1 und 2 dargestellten Blaskästen ist gemeinsam, daß sie auf der Seite des Transportbandes 5 angeordnet sind und durch dieses hindurch die Papierbahn 3 auf dem Transportband 5 stabilisieren.The two shown in Figures 1 and 2 Blow boxes have in common that they are on the side of the Conveyor belt 5 are arranged and through this through the paper web 3 on the conveyor belt 5 stabilize.

Figur 3 zeigt wiederum einen Ausschnitt aus einer Maschine zur Herstellung einer Materialbahn beziehungsweise einer Papierherstellungsmaschine, innerhalb derer eine Papierbahn 3 über zwei Walzen geführt wird. Beispielsweise kann die Papierbahn 3 von einer Umlenkwalze 27 auf einen Trockenzylinder 7 geführt werden, dessen Durchmesser wesentlich großer ist als der der Umlenkwalze 27. Die Umlenkwalze 27 kann als Bahnleitwalze dienen. Denkbar ist es auch, diese zu beheizen. Wesentlich ist, daß die freie Laufstrecke 13 mit einem Blaskasten 21 zusammenwirkt, der hier mehrteilig ausgebildet ist und einen ersten Teilblaskasten 21' sowie einen zweiten Teilblaskasten 21'' aufweist. Denkbar ist es auch, mehrere kleine Bahnstabilisatoren einzusetzen, um die Papierbahn im Bereich der freien Laufstrecke 13 zu führen.Figure 3 again shows a section of a Machine for the production of a material web respectively a paper making machine, inside of which a paper web 3 is guided over two rollers becomes. For example, the paper web 3 from a deflection roller 27 to a drying cylinder 7 are performed, the diameter of which is essential is larger than that of the deflection roller 27. The deflection roller 27 can serve as a web guide roller. Is conceivable it also to heat them. It is essential that the free running path 13 cooperates with a blow box 21, which is formed here in several parts and a first partial blow box 21 'and a second Partial blow box 21 ''. It is also conceivable use several small web stabilizers to the paper web in the area of the free running path 13 respectively.

Jeder der Teilblaskasten 21' und 21'' weist einen Zuluftanschluß Z auf. Der Blaskasten 21 ist auch hier im Bereich des Randes der Papierbahn 3 angeordnet. Der in Figur 3 dargestellte Blaskasten zeichnet sich dadurch aus, daß er sich über die gesamte Länge der freien Laufstrecke 13 erstreckt und damit sowohl auf den ablaufenden Nip 26 als auch auf den auflaufenden Nip 25 wirken kann, in dem die Materialbahn auf die Oberfläche des Trockenzylinders 7 aufläuft. Durch die von dem Trockenzylinder 7 und der Materialbahn mitgerissenen Luft besteht ein Überdruck im Nip 25.Each of the blow boxes 21 'and 21' 'has one Supply air connection Z on. The blow box 21 is too arranged here in the region of the edge of the paper web 3. The blow box shown in Figure 3 is characterized by the fact that it covers the entire Length of the free running path 13 extends and thus both on the running nip 26 and can act on the accumulating nip 25 in which the Material web on the surface of the drying cylinder 7 accumulates. Because of the drying cylinder 7 and the material web entrained air an overpressure in the nip 25.

Figur 4 zeigt schließlich einen Querschnitt durch einen Blaskasten 21. Es ist ersichtlich, daß dieser ein Gehäuse 29 aufweist, das auf geeignete Weise mit einer Luftversorgungseinrichtung verbunden ist, so daß innerhalb des Gehäuses 29 ein Überdruck vorherrscht ist. Die Luft tritt durch einen Auslaßschlitz 31 aus, der sich nahe eines gekrümmten Gehäuseabschnitts 33 öffnet. Der Auslaßschlitz 31 ist so ausgebildet, daß die Luft an dem gekrümmten Gehäuseabschnitt 33 entlangströmt und aus einem zwischen Gehäuse 29 und Transportband 5 liegenden Spalt 35 austritt. Die Luft wird dabei derart gelenkt, daß in dem Zwischenraum 37 zwischen Bahnstabilisator 17 und Transportband 5 ein Unterdruck aufgebaut beziehungsweise der durch den Bahnstabilisator 17 noch vorhandene verstärkt wird. Der Blaskasten 21 ist im Bereich des Randes 39 der Materialbahn beziehungsweise Papierbahn 3 angeordnet und bewirkt damit insbesondere eine sichere Führung des Bahnrandes, so daß ein Flattern und damit die Gefahr eines Bahnabrisses praktisch gänzlich vermieden werden kann.Figure 4 finally shows a cross section through a blow box 21. It can be seen that this has a housing 29 which is suitable is connected to an air supply device, so that there is an overpressure within the housing 29 is. The air passes through an outlet slot 31 from which is close to a curved Housing section 33 opens. The outlet slot 31 is designed so that the air on the curved Flows along housing section 33 and from a lying between housing 29 and conveyor belt 5 Gap 35 emerges. The air is directed in such a way that in the space 37 between web stabilizer 17 and conveyor belt 5 a negative pressure built up or by the web stabilizer 17 still existing is strengthened. The Blow box 21 is in the region of the edge 39 of the material web or paper web 3 arranged and in particular brings about safe guidance the web edge, so that a flutter and thus the Danger of a web break practically completely avoided can be.

In Figur 4 ist das Transportband 5 in zwei Positionen dargestellt: Mit durchgezogenen Linien ist die Ruhestellung des Transportbandes 5 gezeigt, mit gestrichelten Linien dessen Arbeitsposition.In Figure 4, the conveyor belt 5 is in two positions shown: The is with solid lines Rest position of the conveyor belt 5 shown with dashed lines Lines its working position.

Besonders Figur 4 laßt deutlich erkennen, daß der Blaskasten 21, der an einer Seitenwand 23 des Bahnstabilisators 17 angebracht ist, unabhängig von diesem gegenüber dem Transportband 5 und der Papierbahn 3 justiert und eingestellt werden kann. Auch die Anordnung des Auslaßschlitzes 31 kann so gewählt werden, daß die ausströmende Luft optimal an dem gekrümmten Gehauseabschnitt 33 anliegt und den Zwischenraum 37 sicher gegenüber der außerhalb der Papierherstellungsmaschine liegenden Umgebung derart abgrenzt, daß dort einen Unterdruck aufbaut wird.In particular, Figure 4 clearly shows that the Blow box 21 on a side wall 23 of the web stabilizer 17 is attached regardless of this compared to the conveyor belt 5 and the paper web 3 can be adjusted and adjusted. The arrangement of the outlet slot 31 can also be so be chosen so that the outflowing air is optimal abuts the curved housing section 33 and the space 37 is safe from the outside environment of the papermaking machine delimits such that a negative pressure builds up there becomes.

Aus der Beschreibung zu den Figuren 1 bis 4 wird deutlich, daß vorzugsweise an beiden Seiten des Bahnstabilisators 17 Blaskasten angebracht werden, wie sie in den Figuren dargestellt sind. Da die Blaskästen separat gegenüber dem Bahnstabilisator ausgebildet sind, können die Blaskästen unabhängig von diesem gegenüber dem Transportband 5 beziehungsweise der Papierbahn 3 ausgerichtet werden, so daß eine sichere Unterdruckerzeugung an den Seiten der Papierbahn 3 gewährleistet ist. Wenn der Blaskasten mehrteilig ausgebildet wird oder mehrere kleine Blaskästen hintereinander im Bereich einer freien Laufstrecke angeordnet werden, können diese unabhängig voneinander justiert und damit optimal an den Verlauf von Transportband 5 und Papierbahn 3 angepaßt werden.From the description of Figures 1 to 4 clearly that preferably on both sides of the Web stabilizer 17 blow box can be attached, as shown in the figures. Since the Blow boxes separate from the web stabilizer trained, the blow boxes can be independent from this to the conveyor belt 5 respectively the paper web 3 are aligned, so that safe vacuum generation on the sides the paper web 3 is guaranteed. If the blow box is formed in several parts or more small blow boxes one behind the other in the area of one free running track can be arranged adjusted independently of each other and thus optimal the course of conveyor belt 5 and paper web 3 be adjusted.

Aus dem oben Gesagten wird schließlich auch deutlich, daß die Blaskästen mit praktisch beliebig ausgestalteten Bahnstabilisatoren zusammenwirken und damit universell eingesetzt werden können.Finally, it becomes clear from what has been said above that the blow boxes with practically any designed track stabilizers interact and can therefore be used universally.

Claims (4)

  1. Arrangement for guiding a material web (3), in particular a fibrous material web, within a machine for producing the material web (3), having at least one web stabilizer (17) extending substantially over the width of the material web (3), at least one separate blower box (21) being arranged on at least one side of the web stabilizer (17) located in the area of the lateral web edge, characterized in that the blower box (21) comprises a plurality of partial blower boxes (21', 21") which - as viewed in the running direction of the material web (3) - are arranged one behind another and can be adjusted independently of one another.
  2. Arrangement according to Claim 1, characterized in that a blower box (21) is arranged on both sides of the web stabilizer (17).
  3. Arrangement according to one of the preceding claims, characterized in that the blower box (21) is arranged at the start and/or end of a free draw (13, 15).
  4. Arrangement according to one of the preceding claims, characterized in that the blower box (21) is supplied with air taken in by the web stabilizer (17) and/or with air supplied by a separate compressed-air supply device.
EP96117463A 1996-01-20 1996-10-31 Apparatus for guiding web material Expired - Lifetime EP0785306B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19601989 1996-01-20
DE19601989A DE19601989C2 (en) 1996-01-20 1996-01-20 Arrangement for guiding a material web

Publications (3)

Publication Number Publication Date
EP0785306A2 EP0785306A2 (en) 1997-07-23
EP0785306A3 EP0785306A3 (en) 1998-09-09
EP0785306B1 true EP0785306B1 (en) 2002-05-02

Family

ID=7783253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117463A Expired - Lifetime EP0785306B1 (en) 1996-01-20 1996-10-31 Apparatus for guiding web material

Country Status (5)

Country Link
US (1) US5893505A (en)
EP (1) EP0785306B1 (en)
CN (1) CN1158816A (en)
CA (1) CA2195142A1 (en)
DE (2) DE19601989C2 (en)

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CH693304A5 (en) * 1997-08-01 2003-05-30 Roland Man Druckmasch Turning bar and turning bar arrangement for a rotary printing press.
US6325896B1 (en) * 1999-09-23 2001-12-04 Valmet-Karlstad Ab Apparatus for transferring a fast running fibrous web from a first location to a second location
DE60116404T2 (en) * 2000-02-26 2006-08-03 Voith Paper Patent Gmbh Vacuum belt conveyor
US6513263B2 (en) * 2000-10-06 2003-02-04 Enerquin Air Inc. Ventilator for offset pocket and method of ventilating the same
DE102005057426A1 (en) * 2005-11-30 2007-05-31 Andritz Küsters GmbH & Co. KG Compact reduced pressure conveyor belt device for guiding moving sheet, e.g. in paper or cardboard production machine, has long gap ejector(s) for applying reduced pressure to endless belt to fix sheet
US8042807B2 (en) * 2006-12-21 2011-10-25 Palo Alto Research Center Incorporated Transport for printing systems
DE102009056625B9 (en) 2009-12-02 2011-05-12 Paprima Industries Inc., Dorval Extension device for an air guide box
DE102010056576B8 (en) 2010-12-30 2015-05-07 Paprima Industries Inc. Papermaking machine and method of making paper
DE102015001008A1 (en) * 2015-01-28 2016-07-28 Andritz Küsters Gmbh Process and apparatus for the production of wetlaid nonwovens
DE102017123189A1 (en) 2017-10-06 2019-04-11 Voith Patent Gmbh Web guiding device for stabilizing a laminar material web, drying section of a web guiding device and method for operating a web guiding device for stabilizing a laminar material web in a drying section

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FI69332C (en) * 1984-03-02 1986-01-10 Valmet Oy ANORDNING I TORKNINGSPARTIET AV EN PAPPERSMASKIN
FI76142C (en) * 1985-11-14 1988-09-09 Valmet Oy FICKVENTILATIONSFOERFARANDE OCH -ANORDNING I EN PAPPERSMASKINS MAONGCYLINDERTORK.
US4698919A (en) * 1986-04-08 1987-10-13 Beloit Corp. Apparatus for assisting the transfer of a web to a drying section
DE3668927D1 (en) * 1986-04-08 1990-03-15 Beloit Corp BLOWING BOX FOR DRYERS.
US5507104A (en) * 1987-02-13 1996-04-16 Beloit Technologies, Inc. Web drying apparatus
DE3706541A1 (en) * 1987-02-28 1988-09-08 Voith Gmbh J M DEVICE FOR STABILIZING THE RUN OF A GOODS, IN PARTICULAR FOR STABILIZING A PAPER, IN THE DRYING PART OF A PAPER MACHINE
DE3739338C2 (en) * 1987-11-20 1995-09-07 Voith Gmbh J M Air guide box for stabilizing the running of a web, in particular a paper web
FI82502C (en) * 1989-05-02 1991-03-11 Valmet Paper Machinery Inc Method and apparatus in the drying section of a paper machine to effect the tip drawing of the web
FI95732C (en) * 1992-01-13 1996-03-11 Valmet Paperikoneet Oy Device in the dryer section of a paper machine

Also Published As

Publication number Publication date
DE19601989C2 (en) 2002-01-31
US5893505A (en) 1999-04-13
DE19601989A1 (en) 1997-07-24
EP0785306A2 (en) 1997-07-23
EP0785306A3 (en) 1998-09-09
DE59609152D1 (en) 2002-06-06
CA2195142A1 (en) 1997-07-21
CN1158816A (en) 1997-09-10

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