EP0744366B1 - Device for guiding a fibrous web comprising a stationary slide rail - Google Patents

Device for guiding a fibrous web comprising a stationary slide rail Download PDF

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Publication number
EP0744366B1
EP0744366B1 EP96107713A EP96107713A EP0744366B1 EP 0744366 B1 EP0744366 B1 EP 0744366B1 EP 96107713 A EP96107713 A EP 96107713A EP 96107713 A EP96107713 A EP 96107713A EP 0744366 B1 EP0744366 B1 EP 0744366B1
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EP
European Patent Office
Prior art keywords
web
sliding bar
coating
slide bar
area
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
EP96107713A
Other languages
German (de)
French (fr)
Other versions
EP0744366A2 (en
EP0744366A3 (en
Inventor
Kurt Eichinger
Walter Humplstötter
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Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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Filing date
Publication date
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Publication of EP0744366A2 publication Critical patent/EP0744366A2/en
Publication of EP0744366A3 publication Critical patent/EP0744366A3/en
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Publication of EP0744366B1 publication Critical patent/EP0744366B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/34—Apparatus for taking-out curl from webs
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/36—Guiding mechanisms
    • D21F1/38—Pads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/009—Apparatus for glaze-coating paper webs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting

Definitions

  • the invention relates to a stationary slide bar for guiding a running fibrous web, in particular a paper or Board web.
  • a rolling machine is known from D3, FR-A-2 522 631, in which the web of a roll of a slitting device is fed.
  • the web is over guided a fixed guide table.
  • the guide table is towards the web side convexly curved, whereby air flows into the gusset between the web the curved table and the web is brought in and thereby the web floating in an air film.
  • From DE-A-3 423 539 (D4) is a device for adjustment and maintenance the tension in the transverse direction of a web, in particular a paper web, is detectable.
  • This device has several loading units in the transverse direction of the web available. The loading units can be moved towards the web and with one curved guide surface.
  • a paper coating device is disclosed in DE-A-4 415 581 (D5), in which as a means a rotating, driven roller is provided for web deflection.
  • the diameter the roller must be large enough to be able to move at high web speed Air cushion forms and remains above the deflection roller, so that the running web floats and the freshly applied coating medium is not damaged.
  • the present invention has for its object a stationary slide rail for guiding a paper or cardboard web to be designed in such a way that it is as easy as possible producible and generally usable without active air supply is.
  • the invention Compared to conventional guide rolls, the invention has stationary slide bar a lighter weight and none movable elements (no rotating mass); therefore only a simplified chair is required.
  • An additional one important advantage is that the invention Slide bar insensitive to high temperature and to Temperature fluctuations.
  • Figure 1 shows a section of a Coating line for a paper or cardboard web with associated Drying device.
  • Figure 2 is one schematic oblique view of a stationary slide bar.
  • the Figure 3 shows a complete off-line coating machine.
  • FIG. 4 shows a partial view (in the direction of arrow IV of FIG Figure 3) on the track with a curved slide bar.
  • FIG. 5 shows an archable over its length and also tiltable slide bar.
  • FIG. 6 is a cross section along line VI of FIG. 5.
  • a paper or cardboard web 7 runs over web guide rollers 5 in a coating unit 8, from there via further web guide rollers 6 to a drying unit 9.
  • Part of the web guide rollers 5, 6 and the am Web guide roller 12 arranged at the end of the drying unit 9 are provided with only symbolically represented drives.
  • the individual stationary slide bar 10 supported several holders or on a support bar 14.
  • the Support bar 14 and the slide bar 10 fastened thereon across the entire width B of the web 7.
  • Die Slide bar 10 has a convexly rounded (seen in cross section) Surface 11.
  • the slide bar 10 made from a simple, cheap steel.
  • the convex rounded surface 11 is provided with a coating, for example made of a hard metal or ceramic. If required, the coated surface 11 becomes smooth polished. In this way, the surface 11 is insensitive against occasional contact with the running web 7. However is with continuous operation of the plant with a relatively high Web running speed a contact of the web 7 with the surface 11 of the slide strips 10 avoided in that the bottom transported an air boundary layer to the train, so that there is an aerodynamic on the inlet side of each slide bar 10 Grease wedge forms.
  • the arrangement according to Figure 1 is such that in the Coating system 8 and coated the top of the paper web then dried by the drying unit 9, so that only the uncoated underside of the web with the web guide rollers 6, 12 and occasionally or temporarily with the slide bars 10 comes into contact.
  • a slide bar but can also be arranged on the painted side of the web, z. B. if the line thickness is relatively small.
  • the underside of the impact jet dryer is 9 just. Therefore, the slide strips 10 are arranged such that the web 7 on a substantially straight line runs along the bottom of the dryer 9. The web 7 will therefore not deflected (or not significantly) at the slide rails.
  • the slide bar according to the invention is also for others Suitable applications where they have to run the web more or less redirect.
  • this shows a complete off-line coating machine, those for coating relatively thin papers is suitable at very high working speeds.
  • several stationary slide rails according to the invention in Positions arranged where previously normal rotatable Guide rollers were arranged.
  • One recognizes in detail in 3 shows a unwind station 20, from which the paper web 17th runs to a coating unit 18 for the web top and then past infrared dryers 21, through hot air dryers 22 and through a drying cylinder group 23.
  • the web 17 then runs through a second coating unit 18 for the underside of the web, also passing infrared dryers 21, by hot air dryer 22 and by a second Drying cylinder group 23, after which the finished coated web is wound up in a rolling apparatus 24.
  • a second coating unit 18 for the underside of the web, also passing infrared dryers 21, by hot air dryer 22 and by a second Drying cylinder group 23, after which the finished coated web is wound up in a rolling apparatus 24.
  • the path deflection at each of the stationary Slide strips 10 approximately between 5 degrees and a maximum of approximately 40 Degree. But you can also provide a larger deflection, for. B. in the order of 90 °.
  • Figure 4 is indicated schematically that a slide bar 10A bent approximately parallel to the direction of web travel can be. This allows the paper web 17 to be transverse to the direction of web travel pull smooth or "stretch". With the help of Bending devices, not shown, can the extent b of Deflection can be varied.
  • FIGS. 5 and 6 show a slide bar 10B, which are in a direction substantially perpendicular to the paper web 18 bent or (in other words) arched can.
  • the width of the paper web is designated by B in FIG.
  • the equal strip 10B (and if necessary a support bar 14A) connected to it rests on several Lifting devices, e.g. Threaded spindles 31. These are about the Length of the slide bar evenly distributed and individual adjustable.
  • the threaded spindles 31 are on a carrier 34 (e.g. square tube).
  • a carrier 34 e.g. square tube.
  • 5 is an example an upwardly curved state of the slide bar designated 10C.
  • the carrier 34 extending parallel to the slide bar has in the illustrated embodiment, one at each end Swivel pin 35, with the help of which it is held in holders 33 (with each a clamping piece 33a) rests.
  • the holders 33 are for example attached to machine side members 36, which on stands 37 rest.
  • the spindles 31 extend in the essentially perpendicular to the paper web 17.
  • the carrier 34 together with the slide bar 10B by a certain angle + a or -a pivot.
  • the angle a can e.g. up to 10 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Paper (AREA)
  • Pens And Brushes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Sliding-Contact Bearings (AREA)
  • Drying Of Solid Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The steel slide strip (10) extends over the whole width (B) of the web (7); has a convex cross-section, and a surface (11) coming into contact with the moving web. Near the side strip is at least one driven guide roller (12) for the web and which produces sufficient speed to form an aerodynamic lubricating wedge effect. The surface of the strip has a coating of hard metal or ceramic and is polished. An oblique blast drying unit (9) is positioned near the slide strip. A wiper unit (8) shapes the web. An air inlet (13) is near the edges of the web.

Description

Die Erfindung betrifft eine stationäre Gleitleiste zum Führen einer laufenden Faserstoffbahn, insbesondere einer Papieroder Kartonbahn.The invention relates to a stationary slide bar for guiding a running fibrous web, in particular a paper or Board web.

Auf die folgenden Veröffentlichungen wird hingewiesen:

D1:
Lehr- und Handbuch "Die Papierfabrikation und ihre Maschinen" von F. Müller, II. Band 1938, Seite 467,
D2:
EP 0 643 168 A1.
Attention is drawn to the following publications:
D1:
Teaching and handbook "Paper production and its machines" by F. Müller, II. Volume 1938, page 467,
D2:
EP 0 643 168 A1.

In der Skizze Nr. 300 der Druckschrift D1 ist im Bereich einer Rollenschneidmaschine eine sogenannte Faltenausstreichleiste dargestellt, welche nach dem Längsschneiden der Papierbahn die Teilbahnen einer Aufwickel-Einrichtung zuführt.In sketch No. 300 of document D1 there is a Roll cutting machine a so-called fold spreading bar shown, which after the longitudinal cutting of the paper web Feeds partial webs to a winding device.

Aus der Druckschrift D2, Figuren 3-6, sind sogenannte Tragluftbalken bekannt, bestehend aus je einem Hohlprofil-Balken, der auf seiner der Papierbahn zugewandten Seite eine Vielzahl von Blasluft-Bohrungen aufweist. Diese Tragluft-Balken sind in der Regel auf der Auslaßseite einer Bahn-Streichanlage angeordnet, und zwar auf der gestrichenen Seite der Bahn. Unter beträchtlichem Aufwand für das Zuführen der Blasluft wird dafür gesorgt, daß die frisch gestrichene und also noch feuchte Seite der Papierbahn keinesfalls in direkten Kontakt mit dem Tragluftbalken gelangt. From the document D2, Figures 3-6, there are so-called air bars known, each consisting of a hollow profile beam, a large number on its side facing the paper web of blown air holes. These air beams are in usually arranged on the outlet side of a web coater, on the painted side of the web. Under considerable effort is required to supply the blown air made sure that the freshly painted and therefore still damp Side of the paper web in no direct contact with the Lifting air beam arrives.

Aus der D3, FR-A- 2 522 631 ist eine Rollmaschine bekannt, bei der die Warenbahn von einem Abrollwickel einer Längsteilvorrichtung zugeführt wird. Dabei wird die Bahn über einen feststehenden Führungstisch geleitet. Der Führungstisch ist zur Warenbahnseite hin konvex gekrümmt ausgebildet, wodurch mit der Warenbahn Luft in den Zwickel zwischen dem gekrümmten Tisch und der Warenbahn eingeschleppt wird und dadurch die Bahn auf einem Luftfilm schwimmt.A rolling machine is known from D3, FR-A-2 522 631, in which the web of a roll of a slitting device is fed. The web is over guided a fixed guide table. The guide table is towards the web side convexly curved, whereby air flows into the gusset between the web the curved table and the web is brought in and thereby the web floating in an air film.

Aus der DE-A- 3 423 539 ( D4)ist eine Einrichtung zur Einstellung und Aufrechterhaltung der Spannung in Querrichtung einer Bahn, insbesondere Papierbahn, erttnehmbar. Bei dieser Einrichtung sind in Querrichtung der Bahn mehrere Beaufschlagungseinheiten vorhanden. Die Beaufschlagungseinheiten sind zur Bahn hin bewegbar und mit einer gekrümmten Führungsfläche versehen.From DE-A-3 423 539 (D4) is a device for adjustment and maintenance the tension in the transverse direction of a web, in particular a paper web, is detectable. at This device has several loading units in the transverse direction of the web available. The loading units can be moved towards the web and with one curved guide surface.

Eine Papier-Streichvorrichtung ist in der DE-A-4 415 581 (D5) offenbart, bei der als Mittel zur Bahnumlenkung eine rotierende, angetriebene Walze vorgesehen ist. Der Durchmesser der Walze muss hierbei so groß sein, dass sich mittels hoher Bahngeschwindigkeit ein Luftpolster ausbildet und über der Umlenkwalze bestehen bleibt, so dass die laufende Bahn aufschwimmt und das frisch aufgetragene Streichmedium nicht beschädigt wird.A paper coating device is disclosed in DE-A-4 415 581 (D5), in which as a means a rotating, driven roller is provided for web deflection. The diameter the roller must be large enough to be able to move at high web speed Air cushion forms and remains above the deflection roller, so that the running web floats and the freshly applied coating medium is not damaged.

Bei den genannten Lösungen ist die Art und Weise der Ausbildung eines Luftpolsters zur Führung der Papier- oder Kartonbahn nur mit erheblichem Aufwand realisierbar. In the solutions mentioned, the way in which an air cushion is formed is Guiding the paper or cardboard web can only be realized with considerable effort.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine stationäre Gleitleiste zum Führen einer Papier- oder Kartonbahn derart zu gestalten, daß sie mit möglichst geringem Aufwand herstellbar und in der Regel ohne aktive Luftzufuhr anwendbar ist.The present invention has for its object a stationary slide rail for guiding a paper or cardboard web to be designed in such a way that it is as easy as possible producible and generally usable without active air supply is.

Diese Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst. Der Vorteil dieser Maßnahmen besteht darin, daß einerseits die zu führende Bahn vorübergehend oder zeitweise mit der Oberfläche der Gleitleiste in Kontakt kommen kann, daß die Bahn jedoch andererseits bei genügend hoher Laufgeschwindigkeit - dank der Ausbildung eines aerodynamischen Schmierkeiles - meistens berührungslos über die konvex gerundete Oberfläche der Gleitleiste gleitet. Die erfindungsgemäße Gleitleiste ist somit dazu geeignet, vorzugsweise dort eingesetzt zu werden, wo bisher eine drehbare Bahnleitwalze erforderlich ist. Solche Leitwalzen sind nicht nur in der Herstellung kostspielig, sondern bedürfen auch einer laufenden Wartung. Demgegenüber wird durch die Erfindung eine beträchtliche Einsparung erzielt.This object is achieved by the features specified in claim 1 solved. The advantage of these measures is that on the one hand, the rail to be guided temporarily or temporarily can come into contact with the surface of the slide bar that the train, on the other hand, at a sufficiently high running speed - thanks to the formation of an aerodynamic lubricating wedge - mostly contactless over the convex rounded Surface of the slide bar slides. The invention Slide bar is thus suitable, preferably used there to become where a rotating web guide roller was previously required is. Such guide rolls are not only in production expensive, but also require ongoing maintenance. In contrast, the invention makes a considerable one Savings achieved.

Verglichen mit herkömmlichen Leitwalzen hat die erfindungsgemäße stationäre Gleitleiste ein geringeres Gewicht und keine beweglichen Elemente (keine rotierende Masse); deshalb wird nur eine vereinfachte Stuhlung benötigt. Ein zusätzlicher wichtiger Vorteil besteht darin, daß die erfindungsgemäße Gleitleiste unempfindlich gegen erhöhte Temperatur und gegen Temperaturschwankungen ist.Compared to conventional guide rolls, the invention has stationary slide bar a lighter weight and none movable elements (no rotating mass); therefore only a simplified chair is required. An additional one important advantage is that the invention Slide bar insensitive to high temperature and to Temperature fluctuations.

Weitere vorteilhafte Ausgestaltungen der Erfindung und bevorzugte Anwendungen der erfindungsgemäßen Gleitleiste sind in den Unteransprüchen angegeben.Further advantageous embodiments of the invention and preferred Applications of the slide bar according to the invention are in specified in the subclaims.

In der Zeichnung zeigt die Figur 1 einen Ausschnitt aus einer Streichanlage für eine Papier- oder Kartonbahn mit dazugehörender Trocknungseinrichtung. Die Figur 2 ist eine schematische Schrägansicht einer stationären Gleitleiste. Die Figur 3 zeigt eine komplette Off-line-Streichmaschine. In the drawing, Figure 1 shows a section of a Coating line for a paper or cardboard web with associated Drying device. Figure 2 is one schematic oblique view of a stationary slide bar. The Figure 3 shows a complete off-line coating machine.

Die Figur 4 zeigt eine Teilansicht (in Pfeilrichtung IV der Figur 3) auf die Bahn mit einer gebogenen Gleitleiste.FIG. 4 shows a partial view (in the direction of arrow IV of FIG Figure 3) on the track with a curved slide bar.

Die Figur 5 zeigt eine über ihre Länge wölbbare und außerdem kippbare Gleitleiste.FIG. 5 shows an archable over its length and also tiltable slide bar.

Die Figur 6 ist ein Querschnitt nach Linie VI der Figur 5.FIG. 6 is a cross section along line VI of FIG. 5.

In Figur 1 läuft eine Papier- oder Kartonbahn 7 über Bahnleitwalzen 5 in ein Streichaggregat 8, von dort über weitere Bahnleitwalzen 6 zu einem Trocknungsaggregat 9. Dort läuft die Bahn entlang der Unterseite des beispielsweise als Prallstrahltrockner ausgebildeten Trocknungsaggregates, gestützt durch stationäre Gleitleisten 10, zu einer weiteren Bahnleitwalze 12. Ein Teil der Bahnleitwalzen 5, 6 und die am Ende des Trocknungsaggregates 9 angeordnete Bahnleitwalze 12 sind mit nur symbolisch dargestellten Antrieben versehen. Gemäß Figur 2 ist die einzelne stationäre Gleitleiste 10 auf mehreren Haltern oder auf einer Stützleiste 14 abgestützt. Die Stützleiste 14 und die darauf befestigte Gleitleiste 10 erstrecken sich quer über die gesamte Breite B der Bahn 7. Die Gleitleiste 10 hat eine (im Querschnitt gesehen) konvex gerundete Oberfläche 11. Vorzugsweise wird die Gleitleiste 10 aus einem einfachen, billigen Stahl gefertigt. Nur die konvex gerundete Oberfläche 11 wird mit einer Beschichtung versehen, beispielsweise aus einem Hartmetall oder aus Keramik. Falls erforderlich, wird die beschichtete Oberfläche 11 glatt poliert. Auf diese Weise ist die Oberfläche 11 unempfindlich gegen gelegentliches Berühren der laufenden Bahn 7. Jedoch wird bei kontinuierlichem Betrieb der Anlage mit relativ hoher Bahnlaufgeschwindigkeit ein Kontakt der Bahn 7 mit der Oberfläche 11 der Gleitleisten 10 dadurch vermieden, daß die Unterseite der Bahn eine Luftgrenzschicht herantransportiert, so daß sich an der Zulaufseite jeder Gleitleiste 10 ein aerodynamischer Schmierkeil ausbildet. In Figure 1, a paper or cardboard web 7 runs over web guide rollers 5 in a coating unit 8, from there via further web guide rollers 6 to a drying unit 9. There runs the Web along the bottom of the for example as Impact jet dryer trained drying unit, supported through stationary slide strips 10, to another Web guide roller 12. Part of the web guide rollers 5, 6 and the am Web guide roller 12 arranged at the end of the drying unit 9 are provided with only symbolically represented drives. According to Figure 2 is the individual stationary slide bar 10 supported several holders or on a support bar 14. The Support bar 14 and the slide bar 10 fastened thereon across the entire width B of the web 7. Die Slide bar 10 has a convexly rounded (seen in cross section) Surface 11. Preferably, the slide bar 10 made from a simple, cheap steel. Only the convex rounded surface 11 is provided with a coating, for example made of a hard metal or ceramic. If required, the coated surface 11 becomes smooth polished. In this way, the surface 11 is insensitive against occasional contact with the running web 7. However is with continuous operation of the plant with a relatively high Web running speed a contact of the web 7 with the surface 11 of the slide strips 10 avoided in that the bottom transported an air boundary layer to the train, so that there is an aerodynamic on the inlet side of each slide bar 10 Grease wedge forms.

Nur für besondere Fälle kann man auf der Zulaufseite einer Gleitleiste 10, wie bei 13 schematisch angedeutet, eine Luft-Zuführeinrichtung 13 vorsehen. Ein solcher besonderer Fall liegt z. B. vor, wenn die Anlage aus dem Stillstand hochgefahren wird oder wenn die Bahnlaufgeschwindigkeit generell ziemlich niedrig ist. In manchen Fällen wird es ausreichen, nur im Bereich der beiden Bahnränder Luftzuführeinrichtungen vorzusehen.You can only find one on the inlet side for special cases Slide bar 10, as indicated schematically at 13, an air supply device 13 provide. Such a special case lies z. B. before when the system from a standstill is started up or if the web running speed is generally quite low. In some cases it will sufficient, only in the area of the two web edges To provide air supply devices.

Die Anordnung gemäß Figur 1 ist derart getroffen, daß in der Streichanlage 8 die Oberseite der Papierbahn gestrichen und danach durch das Trocknungsaggregat 9 getrocknet wird, so daß nur die ungestrichene Bahnunterseite mit den Bahnleitwalzen 6, 12 sowie gelegentlich oder vorübergehend mit den Gleitleisten 10 in Kontakt kommt. In anderen Fällen kann eine Gleitleiste aber auch auf der gestrichenen Seite der Bahn angeordnet werden, z. B. wenn die Strichdicke relativ gering ist.The arrangement according to Figure 1 is such that in the Coating system 8 and coated the top of the paper web then dried by the drying unit 9, so that only the uncoated underside of the web with the web guide rollers 6, 12 and occasionally or temporarily with the slide bars 10 comes into contact. In other cases, a slide bar but can also be arranged on the painted side of the web, z. B. if the line thickness is relatively small.

Gemäß Figur 1 ist die Unterseite des Prallstrahltrockners 9 eben. Deshalb sind die Gleitleisten 10 derart angeordnet, daß die Bahn 7 auf einer im wesentlichen geradlinigen Strecke an der Unterseite des Trockners 9 entlangläuft. Die Bahn 7 wird deshalb an den Gleitleisten nicht (oder nicht nennenswert) umgelenkt.According to FIG. 1, the underside of the impact jet dryer is 9 just. Therefore, the slide strips 10 are arranged such that the web 7 on a substantially straight line runs along the bottom of the dryer 9. The web 7 will therefore not deflected (or not significantly) at the slide rails.

Jedoch ist die erfindungsgemäße Gleitleiste auch für andere Anwendungen geeignet, bei denen sie die zu führende Bahn mehr oder weniger stark umlenken muß. Als Beispiel hierfür sei auf die Figur 3 hingewiesen. Diese zeigt eine komplette Off-line-Streichmaschine, die zum Beschichten relativ dünner Papiere bei sehr hohen Arbeitsgeschwindigkeiten geeignet ist. Darin sind mehrere erfindungsgemäße stationäre Gleitleisten in Positionen angeordnet, wo bisher üblicherweise normale drehbare Leitwalzen angeordnet wurden. Im einzelnen erkennt man in der Figur 3 eine Abrollstation 20, von der die Papierbahn 17 zu einem Streichaggregat 18 für die Bahnoberseite läuft und danach vorbei an Infrarot-Trocknern 21, durch Heißlufttrockner 22 und durch eine Trockenzylindergruppe 23. However, the slide bar according to the invention is also for others Suitable applications where they have to run the web more or less redirect. As an example of this, see the figure 3 pointed. This shows a complete off-line coating machine, those for coating relatively thin papers is suitable at very high working speeds. In this are several stationary slide rails according to the invention in Positions arranged where previously normal rotatable Guide rollers were arranged. One recognizes in detail in 3 shows a unwind station 20, from which the paper web 17th runs to a coating unit 18 for the web top and then past infrared dryers 21, through hot air dryers 22 and through a drying cylinder group 23.

Danach läuft die Bahn 17 durch ein zweites Streichaggregat 18 für die Bahnunterseite, ferner wiederum vorbei an Infrarottrocknern 21, durch Heißlufttrockner 22 und durch eine zweite Trockenzylindergruppe 23, wonach die fertig beschichtete Bahn in einem Rollapparat 24 aufgewickelt wird. Wie man sieht, beträgt die Bahn-Umlenkung an jeder der stationären Gleitleisten 10 ungefähr zwischen 5 Grad und maximal etwa 40 Grad. Man kann aber auch eine größere Umlenkung vorsehen, z. B. in der Größenordnung von 90°.The web 17 then runs through a second coating unit 18 for the underside of the web, also passing infrared dryers 21, by hot air dryer 22 and by a second Drying cylinder group 23, after which the finished coated web is wound up in a rolling apparatus 24. As you can see, is the path deflection at each of the stationary Slide strips 10 approximately between 5 degrees and a maximum of approximately 40 Degree. But you can also provide a larger deflection, for. B. in the order of 90 °.

In Figur 4 ist schematisch angedeutet, daß eine Gleitleiste 10A ungefähr parallel zur Bahnlaufrichtung ausgebogen sein kann. Hierdurch kann man die Papierbahn 17 quer zur Bahnlaufrichtung glatt ziehen oder "breitstrecken". Mit Hilfe von nicht dargestellten Biegevorrichtungen kann das Ausmaß b der Ausbiegung variiert werden.In Figure 4 is indicated schematically that a slide bar 10A bent approximately parallel to the direction of web travel can be. This allows the paper web 17 to be transverse to the direction of web travel pull smooth or "stretch". With the help of Bending devices, not shown, can the extent b of Deflection can be varied.

In den Figuren 5 und 6 ist eine Gleitleiste 10B dargestellt, die in einer Richtung im wesentlichen senkrecht zur Papierbahn 18 ausgebogen oder (mit anderen Worten) gewölbt werden kann. Die Breite der Papierbahn ist in Figur 5 mit B bezeichnet. Zum Zwecke des Wölbens der Gleitleiste 10B ist folgendes vorgesehen: Die Gleichtleiste 10B (und gegebenenfalls eine mit ihr verbundene Stützleiste 14A) ruht auf mehreren Hubeinrichtungen, z.B. Gewindespindeln 31. Diese sind über die Länge der Gleitleiste gleichmäßig verteilt und individuell einstellbar. Die Gewindespindeln 31 sind auf einem Träger 34 (z.B. Vierkant-Rohr) abgestützt. Sie können sich z.B., wie dargestellt, quer durch den Träger hindurch erstrecken und können mittels je eines Handrades 32 verdreht werden. Hierdurch kann man das Ausmaß der Wölbung (oder Ausbiegung z.B. nach oben) beliebig einstellen. In Figur 5 ist beispielhaft ein nach oben gewölbter Zustand der Gleitleiste mit 10C bezeichnet. FIGS. 5 and 6 show a slide bar 10B, which are in a direction substantially perpendicular to the paper web 18 bent or (in other words) arched can. The width of the paper web is designated by B in FIG. For the purpose of arching the slide bar 10B, the following is as follows provided: the equal strip 10B (and if necessary a support bar 14A) connected to it rests on several Lifting devices, e.g. Threaded spindles 31. These are about the Length of the slide bar evenly distributed and individual adjustable. The threaded spindles 31 are on a carrier 34 (e.g. square tube). For example, you can see how shown, extending across the carrier and can be turned by means of a handwheel 32 each. hereby the extent of the curvature (or deflection e.g. upwards). 5 is an example an upwardly curved state of the slide bar designated 10C.

Der sich parallel zur Gleitleiste erstreckende Träger 34 hat beim dargestellten Ausführungsbeispiel an jedem Ende einen Schwenkzapfen 35, mit deren Hilfe er in Haltern 33 (mit je einem Klemmstück 33a) ruht. Die Halter 33 sind beispielsweise auf Maschinen-Längsträgern 36 befestigt, die auf Ständern 37 ruhen. Normalerweise erstrecken sich die Spindeln 31 im wesentlichen senkrecht zur Papierbahn 17. Jedoch kann man mit Hilfe der vorbeschriebenen Bauweise den Träger 34 zusammen mit der Gleitleiste 10B, um einen gewissen Winkel +a oder -a verschwenken. Der Winkel a kann z.B. bis zu 10° betragen. Durch die beschriebenen Maßnahmen, nämlich Bogenverstellung und/oder Verschwenken der Gleitleiste kann wiederum eine gewisse Breitstreckwirkung auf die Papier- oder Kartonbahn erzielt werden.The carrier 34 extending parallel to the slide bar has in the illustrated embodiment, one at each end Swivel pin 35, with the help of which it is held in holders 33 (with each a clamping piece 33a) rests. The holders 33 are for example attached to machine side members 36, which on stands 37 rest. Normally, the spindles 31 extend in the essentially perpendicular to the paper web 17. However, with With the help of the construction described above, the carrier 34 together with the slide bar 10B by a certain angle + a or -a pivot. The angle a can e.g. up to 10 °. Through the measures described, namely bow adjustment and / or pivoting the slide bar can in turn certain spreading effect on the paper or cardboard web be achieved.

Claims (17)

  1. Apparatus for guiding a moving fibrous material web, in particular a paper or board web (7), through a system for coating the moving web, having the following features:
    a) a stationary sliding bar (10) is provided, which extends substantially over the entire web width (B) and, viewed in cross-section, has a convexly rounded surface (11) suitable for contact with the moving web
    b) there is at least one roll (12) which is provided with a drive and which imparts to the web (7) a running speed which is sufficient to form an aerodynamic lubricating wedge
       characterized in that
    c) the roll (12) provided with the drive is a web guide roll, which, as viewed in the web running direction, is arranged immediately downstream of the sliding bar (10)
    d) the sliding bar (10) rests on a plurality of lifting devices (31) which are distributed over its length and can be adjusted individually and which are supported on a carrier (34)
    e) the sliding bar (10) can be curved in the direction of the web (7) to any desired extent over its length by means of the lifting devices (31), and
    f) the sliding bar (10), together with the carrier (34), can be pivoted about an axis (35) parallel to their longitudinal extent.
  2. Apparatus according to Claim 1, characterized in that the sliding bar (10) is produced from steel.
  3. Apparatus according to Claim 1 or 2, characterized in that the surface (11) of the sliding bar (10) has a coating of a hard metal or ceramic.
  4. Apparatus according to one of the preceding claims, characterized in that the surface (11) of the sliding bar (10) is polished.
  5. Apparatus according to Claim 1, characterized in that the sliding bar (10) is formed by a plastic section which is fixed to a steel carrying element.
  6. Apparatus according to Claim 5, characterized in that the sliding bar (10) is produced from a temperature-resistant plastic.
  7. Apparatus according to one of Claims 1-6, characterized in that the sliding bar (10) is arranged in the area of a web drying unit (9).
  8. Apparatus according to one of Claims 1-6, characterized in that the sliding bar (10) is arranged in the area of an impingement flow dryer (9) serving to dry the web (7).
  9. Apparatus according to one of the preceding claims, characterized in that the sliding bar (10) is arranged in the area of a coating unit (8 or 18) serving to finish the web (7).
  10. Apparatus according to Claim 9, characterized in that the sliding bar (10) is arranged on the uncoated side of the web (7 or 17).
  11. Apparatus according to Claim 9, characterized in that the sliding bar (10) is arranged on the coated side of the web.
  12. Apparatus according to one of the preceding claims, characterized in that an air feed device (13) is arranged on that side on which the web (7) runs towards the sliding bar (10) (feed side).
  13. Apparatus according to Claim 12, characterized in that an air feed device (13) is provided only in the area of each of the web edges.
  14. Apparatus according to one of Claims 1 to 13, characterized by an arrangement such that the web (7) runs past the sliding bar (10) substantially without being deflected.
  15. Apparatus according to one of Claims 1 to 13, characterized by an arrangement such that the web (17) is deflected as it runs over the sliding bar (10).
  16. Apparatus according to Claim 15, characterized in that the deflection angle is between 2 and 120 degrees, preferably between 5 and 40 degrees.
  17. Apparatus according to one of the preceding claims, characterized in that the sliding bar (10) is bent or can be bent substantially parallel to the web running direction.
EP96107713A 1995-05-20 1996-05-15 Device for guiding a fibrous web comprising a stationary slide rail Expired - Lifetime EP0744366B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29508421U DE29508421U1 (en) 1995-05-20 1995-05-20 Stationary slide bar
DE29508421U 1995-05-20

Publications (3)

Publication Number Publication Date
EP0744366A2 EP0744366A2 (en) 1996-11-27
EP0744366A3 EP0744366A3 (en) 1997-10-29
EP0744366B1 true EP0744366B1 (en) 2002-08-21

Family

ID=8008360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107713A Expired - Lifetime EP0744366B1 (en) 1995-05-20 1996-05-15 Device for guiding a fibrous web comprising a stationary slide rail

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US (3) US5855672A (en)
EP (1) EP0744366B1 (en)
CN (1) CN1136616A (en)
AT (1) ATE222560T1 (en)
CA (1) CA2176872A1 (en)
DE (2) DE29508421U1 (en)

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* Cited by examiner, † Cited by third party
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DE29508421U1 (en) 1995-05-20 1995-09-14 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Stationary slide bar
US5967457A (en) * 1996-07-23 1999-10-19 Thermo Wisconsin, Inc. Airfoil web stabilization and turning apparatus and method
JP2943106B1 (en) 1998-05-18 1999-08-30 株式会社東京機械製作所 Vibration control method for traveling web, vibration control device, and paper splicing assist device
AT409301B (en) * 2000-05-05 2002-07-25 Ebner Peter Dipl Ing DEVICE FOR GUIDING A METAL STRIP ON A GAS PILLOW
US6488230B2 (en) 2001-01-03 2002-12-03 Coorstek, Inc. Stationary web spreader
FI20021498A7 (en) * 2002-08-20 2004-02-21 Metso Paper Inc Device in connection with a continuous unwinder seaming device for a fibrous web, especially a paper or cardboard web
DE10254777A1 (en) * 2002-11-22 2004-06-03 Voith Paper Patent Gmbh Guide for moist moving paper web has aerodynamic profile with leading edge and trailing edge either side of a thick zone
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CN102747469A (en) * 2012-07-17 2012-10-24 南通市苏中纺织有限公司 Guide rack of drawing frame

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Also Published As

Publication number Publication date
US5855672A (en) 1999-01-05
EP0744366A2 (en) 1996-11-27
CN1136616A (en) 1996-11-27
ATE222560T1 (en) 2002-09-15
DE59609569D1 (en) 2002-09-26
CA2176872A1 (en) 1996-11-21
US6402842B1 (en) 2002-06-11
DE29508421U1 (en) 1995-09-14
EP0744366A3 (en) 1997-10-29
US6174368B1 (en) 2001-01-16

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