EP0791550B1 - Winding machine for winding or unwinding a material web - Google Patents

Winding machine for winding or unwinding a material web Download PDF

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Publication number
EP0791550B1
EP0791550B1 EP97101108A EP97101108A EP0791550B1 EP 0791550 B1 EP0791550 B1 EP 0791550B1 EP 97101108 A EP97101108 A EP 97101108A EP 97101108 A EP97101108 A EP 97101108A EP 0791550 B1 EP0791550 B1 EP 0791550B1
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EP
European Patent Office
Prior art keywords
roll
winding
excess
winding machine
machine according
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
EP97101108A
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German (de)
French (fr)
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EP0791550A3 (en
EP0791550A2 (en
Inventor
Hans-Joachim Fissmann
Matthias Wohlfahrt
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Publication date
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Publication of EP0791550A3 publication Critical patent/EP0791550A3/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
    • B65H18/00—Winding webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/26—Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • 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
    • B65H2301/41486—Winding slitting winding on two or more winding shafts simultaneously
    • B65H2301/414866—Winding slitting winding on two or more winding shafts simultaneously on bed 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
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/90—Machine drive
    • B65H2403/94—Other features of machine drive
    • B65H2403/942—Bidirectional powered handling device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/13—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/13—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material
    • B65H2406/131—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material in combination with rollers or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/23—Winding machines
    • B65H2408/232—Winding beds consisting of two rollers
    • B65H2408/2321—Winding beds consisting of two rollers with winding bed supplied with vacuum or compressed air

Definitions

  • the invention relates to a winding machine for winding or unwinding a web of material, e.g. Paper web.
  • a winding machine for winding or unwinding a web of material, e.g. Paper web.
  • Known winding machines are described for example in US 3,515,183 A. and in DE 35 41 906 C.
  • Winding machines according to US 3,515,183 A have two rotatable winding support rollers, which for the winding roll or for the winding rolls (if the material web is divided lengthways) a so-called Form a changing bed.
  • Winding machines according to DE 35 41 906 C are always used for winding a longitudinally divided web onto several winding rolls. For example, there are three or four support rollers, that form two side-by-side changing beds, for about half of the winding rolls.
  • Each of the winding support rollers has a perforated rotatable Roller jacket and in the interior of which a stationary pressure box, open to the inner surface of the jacket and to one Compressed air source can be connected.
  • the longitudinal walls of the overpressure box (or longitudinal seals) form with the inner surface of the jacket Sealing gaps that define an overpressure zone is.
  • This overpressure zone is relatively narrow. it is located at the point where the winding roll on the carrier roll jacket lies on. An attempt has been made to do this when winding or unwinding Avoid damage to the track caused by its own weight the winding roller at the contact zone with the support rollers occur. The danger of such rail damage is all the more higher, the larger the maximum diameter of the winding roll.
  • the processing of material webs in particular Paper webs in order to be carried out more economically the larger the maximum winding roll diameter can be made can.
  • the invention has for its object a winding machine specify which is as easy to handle and as possible less dirt-sensitive device for weight relief the winding roll has.
  • the gap between the two adjacent support rollers is only one simple longitudinal sealing element required, for example in Form of a roller, but preferably in the form of a longitudinal sealing strip. Since this longitudinal sealing strip (compared to the Compressed air box of DE 9 201 791 U is relatively simple and light, can if necessary by means of a simple lifting or Swivel device can be temporarily removed downwards. Limiting the air cushion at both ends of the Winding roll takes place in a manner known per se by means of of a side plate.
  • the relatively light longitudinal sealing strip that can be inserted between the rollers requires relatively little space and also little Cleaning effort; the machine is ready for operation again very quickly (Time saving).
  • the longitudinal sealing strip can also - if necessary - easily with a separator combine according to DE 3109587 C.
  • the winding machine according to DE 3 541 906 C as a three-roll slitter be trained.
  • the three winding support rollers form two Changing beds, so that those created after slitting Partial webs partly in one and partly in the other changing bed Winding rolls are wound up.
  • the two winding beds are formed by four support rollers.
  • each winding block is in a clamping head in a vertically movable sleeve guide rotatably mounted, which engages in the winding tube.
  • This construction makes weight relief possible, but always only on the end faces of each winding roll; this is special wide winding rolls are not always sufficient.
  • a further requirement can be that not only the web width of the winding rolls, but also the Number of winding rolls should be varied.
  • This additional one too Requirement can be met according to the invention be that the number and length of the pressure zones are variable is. The following can be provided for this purpose: The entire overpressure box is in along the roller axis divided into many small zones, each of which can be controlled individually can be connected to the pressure source. Another according to the invention Construction, which is a particularly fine variation the number and length of the positive pressure zones is allowed in Claim 12 described.
  • the winding machine shown in Figure 1 can be opened or Unwind a single winding roll. Usually, however it forms the winding station of a slitter winder.
  • the other roller 9 can be an air-impermeable roller jacket or a (e.g. B. according to DE 3 843 246 C perforated roll shell, but without stationary installations. It is also conceivable, both rollers 8 and 9 perforated and to be trained with stationary pressure boxes.
  • the feed of the paper web to be wound up can be along line P, but better along line P '(or Line P '') take place, in the latter case thus with the Overpressure box provided winding support roller 9.
  • the resulting Winding roll is designated 7.
  • the one between the winding roll 7 and the rollers 8 and 9 located between below by means of a longitudinal sealing strip 6 and on its two Seals sealed by an invisible side plate.
  • By supplying compressed air through the stationary pressure box 15 and through the bores of the roll shell 10 a compressed air cushion is created in the space mentioned, which counteracts the dead weight of the winding roll.
  • the stationary Overpressure box 15 carries u. a.
  • a suction zone 9b (limited through longitudinal seals 22 and 23) for holding the web be provided when changing roles.
  • Carrier roller 8 preferably not perforated, so that by their No air escapes from the roller jacket from the compressed air cushion.
  • the support roller 8 with a Provided suction port 8a and their coat has only one fine perforation to prevent air from escaping Keep compressed air cushion low.
  • FIG. 2 shows a three-roll winding machine with one central support roller 5 and with two outer, smaller support rollers 9 'and 9' '.
  • the longitudinally cut web of material e.g. B. Paper web, runs along line P over the central support roller 5 into the machine.
  • At least one of the cut ones Partial webs on the support rollers 5 and 9 "to a winding 7a rolled up while at least a second partial web over the rollers 9 'and 5 are rolled up into a roll 7b.
  • the longitudinally cut partial webs are already on the circumference a web guide roller 3 separately, so that the at least one Partial web intended for one winding roll 7a (or more) is along the dot-dash line Pa over another Guide roller 4 and via the support roller 9 '' enters the machine.
  • the other partial web (s) run or run as So far along the line P on the support rollers 5 and 9 ' the winding roll 7b.
  • the spaces between the winding rolls and the support rollers are in turn by means of longitudinal sealing strips 6 'and end sealing elements 34 (e.g. "side plates") sealed to the outside, so that - as on the basis of Figure 1 described - a compressed air cushion can be built can (by means of pressure box 15 and compressed air line 28).
  • a longitudinal member 45 On a longitudinal member 45 are longitudinally movable winding blocks 47, 49 stored, which down into the respective changing bed protrude and to guide the winding rollers 7a, 7b on both sides serve.
  • Each of the winding blocks 47,49 is with a means Lifting device 48 vertically displaceable sleeve guide 46 fitted.
  • Each sleeve guide 46 carries one axially sliding clamping head, which in the (from a winding tube formed) engages the center of the winding roll in question.
  • Roller ejection devices are available with 42, 44 and roller lowering devices designated 53, 54.
  • the middle support roller 5 has a (preferably according to DE 3843246 C) perforated roller jacket and a suction connection 5a.
  • a perforated roller jacket and a suction connection 5a.
  • vacuum can sometimes be generated in the interior of the support roller 5 are generated, in particular during the role change after cutting the partial webs, the new beginning of the web to hold the support roller 5.
  • Winding roll 7b formed a compressed air cushion a stationary Cover 5b are provided, which prevent escape Compressed air prevented by the perforation.
  • the roller 9 " can have a vacuum zone 9b.
  • FIG. 3 shows one possibility of building the winding support roller 9 of Figure 1 or 9 'or 9' 'of Figure 2.
  • Schematic is indicated a perforated roller shell 10, the by means of the usual elements (roller cover 11 and 12) rotatable rests in camps 13 and 14.
  • Inside is a stationary one Overpressure box 15 to 20 using longitudinal seals 21 and 22 (Fig. 1) and peripheral seals 24, 25 a Overpressure zone 9a limited.
  • the box 15 includes a z. B. tubular jacket 16 with openings 29 and end walls 17 and 18. It is at one end via a pressure pipe 20 on the housing of the Bearing 14 supported, at the other end via a nozzle 19th and a bearing in the roller cover 11.
  • the roller should be used in the three-roller winding machine Figure 2 are used, so are additional peripheral seals (and possibly a cover at 29a) is required, for example to form two separate pressure zones.
  • the peripheral seals 24-27 are parallel to the roll axis of rotation movable or in different positions on Coat 16 attachable.
  • Figure 3 shows another way to go over the line 28 with the help of a reversing valve 30 the inside of the box 15 either with the pressure side or with the suction side of one Blower 31 to connect.
  • FIG. 4 shows the following: The overpressure side is with the help of numerous peripheral seals 24a-24n and associated partitions 32 in several along the roller axis subdivided sections, by each one with an individually controllable on-off valve 33 can be connected to the compressed air source 31.
  • the overpressure side is with the help of numerous peripheral seals 24a-24n and associated partitions 32 in several along the roller axis subdivided sections, by each one with an individually controllable on-off valve 33 can be connected to the compressed air source 31.
  • the overpressure side is with the help of numerous peripheral seals 24a-24n and associated partitions 32 in several along the roller axis subdivided sections, by each one with an individually controllable on-off valve 33 can be connected to the compressed air source 31.
  • This method is sufficient if for the a relatively coarse grid is permitted.
  • FIGS 5 and 6 show another construction of a support roller 9 ', in which the division of the overpressure zones after a much finer grid is possible.
  • the pressure box 15A is divided into an overpressure chamber 35 for this purpose, which extends over the entire length of the roll and into one Lattice body 36. Between them is an intermediate wall 37 with numerous Openings 38, similar to that in Figure 4, with the help are controllable by valves 39.
  • the grid body 36 is for Roll shell 10 open and has a variety of axially normal Grid walls 36a, which with the inner surface of the roll shell Form a sealing gap.
  • the distance between two neighboring ones Lattice walls can be chosen to be relatively small, at least much smaller than the smallest possible distance between two valves 39.

Landscapes

  • Winding Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Replacement Of Web Rolls (AREA)
  • Wrappers (AREA)
  • Lubricants (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

The winding machine for paper has two roller drums one of which has a perforated mantle (10) enclosing a stationery pressure chamber connected to a supply of compressed air (31). The cavity between the winding-on upper roll of paper and the two winding support rollers is partially closed by a longitudinal seal (6). The seal around the cavity is completed by end-seals (34) at the support roller (8,9) and paper roll ends. Pressure chamber (15) longitudinal seals (21,22) create a pressure zone (9a) between the longitudinal seal and the point at which the winding roll (7) rests upon the supporting roller drum (9).

Description

Die Erfindung betrifft eine Wickelmaschine zum Auf- oder Abwickeln einer Material-Bahn, z.B. Papierbahn. Bekannte Wickelmaschinen sind beschrieben beispielsweise in US 3 515 183 A und in DE 35 41 906 C.The invention relates to a winding machine for winding or unwinding a web of material, e.g. Paper web. Known winding machines are described for example in US 3,515,183 A. and in DE 35 41 906 C.

Wickelmaschinen gemäß US 3 515 183 A haben zwei drehbare Wickel-Tragwalzen, welche für die Wickelrolle bzw. für die Wickelrollen (falls die Materialbahn längsgeteilt ist) ein sogenanntes Wickelbett bilden. Wickelmaschinen gemäß DE 35 41 906 C dienen stets zum Aufwickeln einer längsgeteilten Bahn auf mehrere Wickelrollen. Es sind beispielsweise drei oder vier Tragwalzen vorhanden, die zwei nebeneinander liegende Wickelbetten bilden, für jeweils etwa die Hälfte der Wickelrollen.Winding machines according to US 3,515,183 A have two rotatable winding support rollers, which for the winding roll or for the winding rolls (if the material web is divided lengthways) a so-called Form a changing bed. Winding machines according to DE 35 41 906 C are always used for winding a longitudinally divided web onto several winding rolls. For example, there are three or four support rollers, that form two side-by-side changing beds, for about half of the winding rolls.

Weiterhin sind aus der US 3 515 183 A folgende Einzelheiten bekannt: Jede der Wickeltragwalzen hat einen perforierten drehbaren Walzenmantel und in dessen Innenraum einen stationären Überdruckkasten, der zur Mantel-Innenfläche offen und an eine Druckluftquelle anschließbar ist. Die Längswände des Überdruckkastens (oder Längsdichtungen) bilden mit der Mantel-Innenfläche Dichtspalte, durch die eine Überdruckzone begrenzt ist. Diese Überdruckzone ist relativ schmal. Sie befindet sich an der Stelle, wo die Wickelrolle auf dem Tragwalzenmantel aufliegt. Man hat hierdurch versucht, beim Auf- oder Abwickeln Beschädigungen der Bahn zu vermeiden, die durch das Eigengewicht der Wickelrolle an der Kontaktzone mit den Tragwalzen auftreten. Die Gefahr solcher Bahn-Beschädigungen ist um so höher, je größer der maximale Durchmesser der Wickelrolle ist. Bekanntlich kann das Verarbeiten von Materialbahnen, insbesondere Papierbahnen, um so wirtschaftlicher durchgeführt werden, je größer der maximale Wickelrollendurchmesser gemacht werden kann. The following details are also known from US 3,515,183 A: Each of the winding support rollers has a perforated rotatable Roller jacket and in the interior of which a stationary pressure box, open to the inner surface of the jacket and to one Compressed air source can be connected. The longitudinal walls of the overpressure box (or longitudinal seals) form with the inner surface of the jacket Sealing gaps that define an overpressure zone is. This overpressure zone is relatively narrow. it is located at the point where the winding roll on the carrier roll jacket lies on. An attempt has been made to do this when winding or unwinding Avoid damage to the track caused by its own weight the winding roller at the contact zone with the support rollers occur. The danger of such rail damage is all the more higher, the larger the maximum diameter of the winding roll. As is known, the processing of material webs, in particular Paper webs in order to be carried out more economically the larger the maximum winding roll diameter can be made can.

Nachteile der bekannten Bauweise gemäß US 3 515 183 A : Es ist notwendig, jede der beiden Tragwalzen mit einem perforierten Walzenmantel und mit einem stationären Überdruckkasten auszustatten. Außerdem müssen die Überdruckkästen während des Betriebes in Umfangsrichtung verstellbar sein, damit die Überdruckzone ständig an die wechselnde Position der Kontaktstelle mit der Wickelrolle angepaßt werden kann. Ein weiterer Nachteil ist, daß in den Überdruckzonen ein sehr hoher Luftdruck eingestellt werden muß, wenn die gewünschte Wirkung überhaupt erzielbar sein soll.Disadvantages of the known construction according to US 3,515,183 A: It is necessary each of the two carrier rollers with a perforated roller jacket and to be equipped with a stationary pressure box. In addition, the overpressure boxes must be in during operation The circumferential direction can be adjusted so that the overpressure zone constantly at the changing position of the contact point with the Winding roll can be adjusted. Another disadvantage is that a very high air pressure is set in the overpressure zones must be achieved if the desired effect can be achieved at all should be.

Eine andere, eher erfolgversprechende Methode, um dem Eigengewicht der Wickelrolle (oder der Wickelrollen) entgegen zu wirken, ist bekannt aus der DE 9 201 791 U. Bei dieser Methode ist vorgesehen, in dem gesamten Zwischenraum, der sich zwischen der Wickelrolle und den beiden Tragwalzen befindet, ein Druckluft-Polster auszubilden. Hierzu ist unterhalb des Zwischenraumes zwischen den zwei Tragwalzen ein Druckluftkasten vorgesehen, der mit den Außenmantelflächen der Tragwalzen Dichtspalte bildet. Ein Nachteil dieser Bauweise besteht darin, daß ein relativ hoher Aufwand erforderlich ist, um den relativ voluminösen Druckluftkasten beweglich abzustützen; denn er muß aus seiner Betriebsposition entfernbar sein, insbesondere weil er häufig gereinigt und/oder von gelegentlich anfallendem Ausschußpapier befreit werden muß, in manchen Fällen auch für das Einführen des Anfanges der Materialbahn.Another, more promising method to get your own weight counteract the winding roll (or the winding rolls), is known from DE 9 201 791 U. In this method provided in the entire space that is between the winding roller and the two support rollers, a compressed air cushion to train. For this is below the gap a compressed air box is provided between the two support rollers, the sealing gap with the outer surface of the support rollers forms. A disadvantage of this design is that a relatively large amount of effort is required to make the relative support the voluminous compressed air box movably; because he has to be removable from its operating position, especially because it is cleaned frequently and / or from occasional waste paper must be exempted, in some cases also for that Introduce the beginning of the web.

Weiterhin ist die DE 44 09 036 A bekannt, die dem Oberbegriff des Anspruchs 1 entspricht und bei der zwei Wickeltragwalzen zusammen mit der Wickelrolle, die sie stützen, einen Zwischenraum einschließen. Dieser Zwischenraum kann durch zwei Enddichtungen und einen Luftkasten abgedichtet und von diesem mit Druck beaufschlagt werden. Hierdurch kann das Auflagergewicht der Wickelrollen auf den Tragwalzen vermindert werden. Bei diesem Aufbau muß über eine Druckluftkammer in einer der Tragwalzen, die einen perforierten Mantel aufweist, im Bereich des Walzennips ein separater Druck aufgebaut werden, damit beim Wickelvorgang keine Luft eingeschlossen wird.Furthermore, DE 44 09 036 A is known, the generic term of claim 1 and in the two Winding support rollers together with the winding roll they support enclose a space. This space can pass through two end seals and an air box sealed and sealed by this be pressurized. As a result, the support weight the winding rollers on the support rollers can be reduced. In this construction, a compressed air chamber in a of the support rollers, which has a perforated jacket, in the area of the roll nip, a separate pressure is built up so that no air is trapped during the wrapping process.

Der Erfindung liegt die Aufgabe zugrunde, eine Wickelmaschine anzugeben, die eine möglichst leicht handhabbare und möglichst wenig schmutzempfindliche Einrichtung zur Gewichtsentlastung der Wickelrolle aufweist.The invention has for its object a winding machine specify which is as easy to handle and as possible less dirt-sensitive device for weight relief the winding roll has.

Diese Aufgabe wird durch die Kombination der im Anspruch 1 angegebenen Merkmale gelöst. Danach wird die aus der US 3 515 183 A bekannte Anordnung dahingehend abgewandelt, daß in der Regel nur eine der Wickeltragwalzen einen innenliegenden und stationären Überdruckkasten aufweist und daß dieser eine wesentlich größere Überdruckzone begrenzt. Diese Überdruckzone erstreckt sich etwa von der engsten Stelle zwischen den beiden Tragwalzen bis in den Bereich, wo die Wickelrolle auf der betreffenden Tragwalze aufliegt. Dadurch wird in dem zwischen Wickelrolle und den Tragwalzen befindlichen Zwischenraum ein Druckluftpolster gebildet, das dem Eigengewicht der Wickelrolle entgegenwirkt. Dies erfolgt - verglichen mit dem Gegenstand der DE 9 201 791 U - mit ganz anderen Mitteln. Zum Abdichten des Spaltes zwischen den zwei benachbarten Tragwalzen ist nur ein einfaches Längsdichtelement erforderlich, beispielsweise in Form einer Walze, vorzugsweise jedoch in Form einer Längsdichtleiste. Da diese Längsdichtleiste (verglichen mit dem Druckluftkasten der DE 9 201 791 U relativ einfach und leicht ist, kann sie im Bedarfsfalle mittels einer einfachen Hub- oder Schwenkvorrichtung vorübergehend nach unten entfernt werden. Das Begrenzen des Druckluftpolsters an den beiden Enden der Wickelrolle erfolgt in an sich bekannter Weise mittels je eines Seitenschildes.This object is achieved by the combination of those specified in claim 1 Features resolved. Thereafter, the one known from US 3,515,183 A Arrangement modified so that usually only one of the winding support rollers is an internal and stationary one Has overpressure box and that this is a much larger Overpressure zone limited. This overpressure zone extends approximately from the narrowest point between the two support rollers in the area where the winding roll on the relevant support roller lies on. This will in the between winding roll and a compressed air cushion between the intermediate rollers formed, which counteracts the dead weight of the winding roll. This is done - compared to the subject of DE 9 201 791 U - with completely different means. For sealing the gap between the two adjacent support rollers is only one simple longitudinal sealing element required, for example in Form of a roller, but preferably in the form of a longitudinal sealing strip. Since this longitudinal sealing strip (compared to the Compressed air box of DE 9 201 791 U is relatively simple and light, can if necessary by means of a simple lifting or Swivel device can be temporarily removed downwards. Limiting the air cushion at both ends of the Winding roll takes place in a manner known per se by means of of a side plate.

Vorteile der erfindungsgemäßen Lösung: Da für das Druckluftpolster ein nur relativ geringer Überdruck erforderlich ist, reicht es in der Regel aus, daß nur eine der beiden Wickeltragwalzen perforiert und mit einem internen stationären Überdruckkasten ausgestattet ist. Somit kann die andere der beiden Tragwalzen in vielen Fällen einen normalen, nicht-perforierten Walzenmantel aufweisen. In manchen Fällen wird man die andere Tragwalze gemäß DE 38 43 246 C als Saugwalze ausbilden, jedoch ohne stationäre Einbauten. Ein weiterer Vorteil ergibt sich daraus, daß der interne Überdruckkasten in Umfangsrichtung nicht verstellbar sein muß, sondern ortsfest in der perforierten Tragwalze angeordnet werden kann. Dadurch sind beträchtliche Einsparungen beim Bau der Wickelmaschine erzielbar.Advantages of the solution according to the invention: As for the compressed air cushion only a relatively low overpressure is required it is usually sufficient that only one of the two winding support rollers perforated and with an internal stationary pressure box Is provided. So the other of the two Carrier rollers in many cases a normal, non-perforated Have roll shell. In some cases you become the other Form the support roller according to DE 38 43 246 C as a suction roller, however without stationary installations. Another advantage results from the fact that the internal pressure box in the circumferential direction does not have to be adjustable, but stationary in the perforated support roller can be arranged. Thereby considerable savings can be achieved in the construction of the winding machine.

In Anlehnung an die Erfahrungen beim Bau von Papiermaschinen-Saugwalzen können der stationäre Überdruckkasten und die dazugehörenden Dichtungen mit geringem Aufwand derart gefertigt werden (z.B. aus Filzstreifen), daß die Dichtungen eine erstaunlich lange Lebensdauer aufweisen. Außerdem bleibt der interne Überdruckkasten auch bei längerer Betriebsdauer frei von Schmutz oder Staub, so daß kein Aufwand für Reinigung entsteht. Based on the experience of building paper machine suction rolls can the stationary overpressure box and the associated Seals made with little effort (e.g. from strips of felt) that the seals are astonishing have a long service life. In addition, the internal remains Overpressure box free of even with a long service life Dirt or dust, so that there is no effort for cleaning.

Die zwischen die Walzen einfahrbare und relativ leichte Längsdichtleiste benötigt relativ wenig Platz und ebenfalls wenig Reinigungsaufwand; die Maschine ist sehr rasch wieder betriebsbereit (Zeitersparnis). Die Längsdichtleiste kann man auch - im Bedarfsfalle - problemlos mit einer Trenneinrichtung gemäß DE 3109587 C kombinieren.The relatively light longitudinal sealing strip that can be inserted between the rollers requires relatively little space and also little Cleaning effort; the machine is ready for operation again very quickly (Time saving). The longitudinal sealing strip can also - if necessary - easily with a separator combine according to DE 3109587 C.

Jede vorhandene herkömmliche Wickelmaschine ist mit der erfindungsgemäßen Einrichtung zum Bilden eines Druckluftpolsters nachrüstbar, bei relativ kurzer Umbauzeit.Any existing conventional winder is with the invention Device for forming a compressed air cushion can be retrofitted, with a relatively short conversion time.

Aus der DE 38 43 246 C ist es bekannt, daß im Inneren einer perforierten Wickeltragwalze während des Rollenwechsels Unterdruck erzeugt werden muß, um nach dem Durchtrennen der Teil-Bahnen je neuen Bahnanfänge an der Wickel-Tragwalze zu halten. Während des normalen Wickelbetriebes sorgt der perforierte Walzenmantel außerdem dafür, daß die mit der Bahn ankommende Luftgrenzschicht durch den Innenraum der Walze entweichen kann. Ein Nachteil dieser bekannten Walze ist, daß beim Saugbetrieb in den von der Bahn nicht überdeckten Teil des Walzenmantels viel Falschluft angesaugt wird. Dagegen bietet die erfindungsgemäße Tragwalzen-Konstruktion mit ihren stationären Einbauten folgende Möglichkeiten: Man kann den Überdruckkasten vorübergehend (d.h. während des Rollenwechsels) an eine Unterdruck-Quelle anschließen. Oder man kann an den Überdruckkasten eine zusätzliche Unterdruckzone anbauen, und zwar speziell in dem Bereich des Walzenmantels, in dem beim Rollenwechsel der Bahn-Anfang auf der Tragwalze aufliegt.From DE 38 43 246 C it is known that inside a perforated winding support roller during roll change vacuum must be generated in order after cutting the partial webs to hold each new start of the web on the winding support roller. The perforated ensures normal winding operation Roller jacket also ensures that the arriving by train Air boundary layer escape through the interior of the roller can. A disadvantage of this known roller is that in suction operation in the part of the roll shell not covered by the web a lot of false air is sucked in. In contrast, the Carrier roller construction according to the invention with its stationary Install the following options: You can use the overpressure box temporarily (i.e. during the roll change) to a vacuum source connect. Or you can go to the overpressure box add an additional vacuum zone, specifically in the area of the roll shell in which the The beginning of the web rests on the support roller.

Gemäß einem weiteren Gedanken der Erfindung kann die Wickelmaschine gemäß DE 3 541 906 C als eine Drei-Walzen-Rollenschneidmaschine ausgebildet sein. Die drei Wickeltragwalzen bilden zwei Wickelbetten, so daß die nach dem Längsschneiden entstandenen Teilbahnen teils im einen und teils im anderen Wickelbett zu Wickelrollen aufgewickelt werden. Es ist auch möglich, daß die zwei Wickelbetten durch vier Tragwalzen gebildet werden. Stets ist hier jede auf einer Wickelhülse entstehende Wickelrolle durch zwei Wickelböcke geführt. In jedem Wickelbock ist in einer vertikal verfahrbaren Hülsenführung ein Spannkopf drehbar gelagert, der in die Wickelhülse eingreift. Diese Konstruktion macht eine Gewichtsentlastung möglich, aber immer nur an den Stirnseiten jeder Wickelrolle; dies ist an besonders breiten Wickelrollen nicht immer ausreichend. Eine zusätzliche pneumatische Gewichtsentlastung kann hier Abhilfe schaffen. In diesem Fall muß die erfindungsgemäße perforierte und mit einem stationären Überdruckkasten versehene Tragwalze derart weitergebildet werden, daß sie über ihre Länge für jede betreffende (zu entlastende) Wickelrolle eine separate Überdruckzone aufweist. Außerdem kann dann auch, falls erforderlich, für jede Wickelrolle eine separate Unterdruckzone vorgesehen werden.According to a further idea of the invention, the winding machine according to DE 3 541 906 C as a three-roll slitter be trained. The three winding support rollers form two Changing beds, so that those created after slitting Partial webs partly in one and partly in the other changing bed Winding rolls are wound up. It is also possible that the two winding beds are formed by four support rollers. Always here is each winding roll created on a winding tube led through two winding blocks. In each winding block is in a clamping head in a vertically movable sleeve guide rotatably mounted, which engages in the winding tube. This construction makes weight relief possible, but always only on the end faces of each winding roll; this is special wide winding rolls are not always sufficient. An additional Pneumatic weight relief can help here create. In this case, the perforated according to the invention and carrying roller provided with a stationary pressure box to be trained in such a way that they are the same for each length relevant (to be relieved) winding roll a separate overpressure zone having. In addition, if necessary, a separate vacuum zone is provided for each winding roll become.

Meistens soll es in einer solchen Drei- (oder Vier-) Walzen-Rollenschneidmaschine möglich sein, die Breite der einzelnen Rollen von Zeit zu Zeit zu verändern. Deshalb ist gemäß der Erfindung vorgesehen, daß jede Über- und/oder jede Unterdruckzone mittels zweier axial verstellbarer Umfangsdichtungen begrenzt ist.Most of the time it should be in such a three (or four) roller slitter be possible the width of each Changing roles from time to time. Therefore, according to the Invention provided that each overpressure and / or underpressure zone by means of two axially adjustable peripheral seals is limited.

Eine noch weitergehende Forderung kann darin bestehen, daß nicht nur die Bahnbreite der Wickelrollen, sondern auch die Anzahl der Wickelrollen variiert werden soll. Auch diese zusätzliche Forderung kann gemäß der Erfindung dadurch erfüllt werden, daß die Anzahl und die Länge der Überdruckzonen variierbar ist. Zu diesem Zweck kann folgendes vorgesehen werden: Der gesamte Überdruckkasten wird entlang der Walzenachse in viele kleine Zonen unterteilt, von denen jede einzeln steuerbar an die Überdruckquelle anschließbar ist. Eine andere erfindungsgemäße Bauweise, die ein besonders feines Variieren der Anzahl und der Länge der Überdruckzonen erlaubt, ist im Anspruch 12 beschrieben. A further requirement can be that not only the web width of the winding rolls, but also the Number of winding rolls should be varied. This additional one too Requirement can be met according to the invention be that the number and length of the pressure zones are variable is. The following can be provided for this purpose: The entire overpressure box is in along the roller axis divided into many small zones, each of which can be controlled individually can be connected to the pressure source. Another according to the invention Construction, which is a particularly fine variation the number and length of the positive pressure zones is allowed in Claim 12 described.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen beschrieben. Darin zeigen:

  • Figur 1 eine Zwei-Walzen-Wickelmaschine,
  • Figur 2 eine Drei-Walzen-Wickelmaschine, jeweils in schematischer Seitenansicht,
  • Figur 3 bis 5 unterschiedliche Wickeltragwalzen im Längsschnitt,
  • Figur 6 einen Querschnitt entlang der Linie VI der Figur 5.
    • Embodiments of the invention are described below with reference to the drawings. In it show:
  • FIG. 1 shows a two-roll winding machine,
  • FIG. 2 shows a three-roll winding machine, each in a schematic side view,
  • 3 to 5 different winding support rollers in longitudinal section,
  • FIG. 6 shows a cross section along the line VI in FIG. 5.

    • Die in Figur 1 dargestellte Wickelmaschine kann zum Auf- oder Abwickeln einer einzigen Wickelrolle dienen. Meistens jedoch bildet sie die Aufwickelstation einer Rollenschneidmaschine. Man erkennt zwei Wickeltragwalzen 8 und 9, von denen die eine (9) einen perforierten Walzenmantel 10 und einen innenliegenden stationären Überdruckkasten 15 aufweist. Die andere Walze 9 kann einen luftundurchlässigen Walzenmantel oder einen (z. B. gemäß DE 3 843 246 C perforierten Walzenmantel aufweisen, aber ohne stationäre Einbauten. Denkbar ist aber auch, beide Walzen 8 und 9 perforiert und mit stationären Überdruckkasten auszubilden. Der Zulauf der aufzuwickelnden Papierbahn kann entlang der Linie P, besser jedoch entlang der Linie P' (oder der Linie P'') erfolgen, im letzteren Fall somit über die mit Überdruckkasten versehene Wickeltragwalze 9. Die entstehende Wickelrolle ist mit 7 bezeichnet. Der zwischen der Wickelrolle 7 und den Walzen 8 und 9 befindliche Zwischenraum ist von unten her mittels einer Längsdichtleiste 6 und an seinen beiden Enden durch je ein nicht sichtbares Seitenschild abgedichtet. Durch Zuführen von Druckluft durch den stationären Überdruckkasten 15 und durch die Bohrungen des Walzenmantels 10 entsteht in dem genannten Zwischenraum ein Druckluftpolster, das dem Eigengewicht der Wickelrolle entgegenwirkt. Der stationäre Überdruckkasten 15 trägt u. a. eine Längsdichtung 21 nahe der engsten Stelle zwischen den Walzen 8 und 9, ferner eine Längsdichtung 22 nahe der Auflagestelle der Wickelrolle 7 auf der Walze 9. Beide Längsdichtungen begrenzen eine Druckzone 9a. Durch das Zuführen der Bahn entlang der Linie P' oder der Linie P'' wird erreicht, daß aus dem Druckluftpolster keine Luft zwischen die Bahnlagen der Wickelrolle 7 gelangt. The winding machine shown in Figure 1 can be opened or Unwind a single winding roll. Mostly, however it forms the winding station of a slitter winder. One can see two winding support rollers 8 and 9, one of which (9) a perforated roll shell 10 and an inner one has stationary pressure box 15. The other roller 9 can be an air-impermeable roller jacket or a (e.g. B. according to DE 3 843 246 C perforated roll shell, but without stationary installations. It is also conceivable, both rollers 8 and 9 perforated and to be trained with stationary pressure boxes. The feed of the paper web to be wound up can be along line P, but better along line P '(or Line P '') take place, in the latter case thus with the Overpressure box provided winding support roller 9. The resulting Winding roll is designated 7. The one between the winding roll 7 and the rollers 8 and 9 located between below by means of a longitudinal sealing strip 6 and on its two Seals sealed by an invisible side plate. By supplying compressed air through the stationary pressure box 15 and through the bores of the roll shell 10 a compressed air cushion is created in the space mentioned, which counteracts the dead weight of the winding roll. The stationary Overpressure box 15 carries u. a. a longitudinal seal 21 near the narrowest point between rollers 8 and 9, further a longitudinal seal 22 near the contact point of the winding roll 7 on the roller 9. Both longitudinal seals delimit a pressure zone 9a. By feeding the web along the line P 'or The line P '' is achieved from the compressed air cushion no air gets between the web layers of the winding roll 7.

    Bei der Bahnführung P'' kann in der Tragwalze 9, falls erforderlich, am Überdruckkasten 15 eine Saugzone 9b (begrenzt durch Längsdichtungen 22 und 23) für das Festhalten der Bahn beim Rollenwechsel vorgesehen werden. In diesem Fall ist die Tragwalze 8 vorzugsweise nicht-perforiert, so daß durch deren Walzenmantel aus dem Druckluftpolster keine Luft entweicht. Bei der Bahnführung P oder P' ist die Tragwalze 8 mit einem Sauganschluß 8a versehen und ihr Mantel weist eine nur sehr feine Perforation auf, um das Entweichen von Luft aus dem Druckluftpolster gering zu halten.With the web guide P ″, if necessary, a suction zone 9b (limited through longitudinal seals 22 and 23) for holding the web be provided when changing roles. In this case it is Carrier roller 8 preferably not perforated, so that by their No air escapes from the roller jacket from the compressed air cushion. In the web guide P or P ', the support roller 8 with a Provided suction port 8a and their coat has only one fine perforation to prevent air from escaping Keep compressed air cushion low.

    Die Figur 2 zeigt eine Drei-Walzen-Wickelmaschine mit einer zentralen Tragwalze 5 und mit zwei äußeren, kleineren Tragwalzen 9' und 9''. Die längs geschnittene Materialbahn, z. B. Papierbahn, läuft entlang der Linie P über die zentrale Tragwalze 5 in die Maschine ein. Wenigstens eine der geschnittenen Teilbahnen wird auf den Tragwalzen 5 und 9" zu einem Wickel 7a aufgerollt, während wenigstens eine zweite Teilbahn über den Walzen 9' und 5 zu einem Wickel 7b aufgerollt wird. Gemäß einer Variante kann auch folgendermaßen vorgegangen werden: Die längs geschnittenen Teilbahnen werden schon am Umfang einer Bahnleitwalze 3 getrennt, so daß die wenigstens eine Teilbahn, die für eine Wickelrolle 7a (oder mehrere) bestimmt ist, entlang der strichpunktierten Linie Pa über eine weitere Leitwalze 4 und über die Tragwalze 9'' in die Maschine einläuft. Die andere(n) Teilbahnen(en) läuft bzw. laufen wie bisher entlang der Linie P über die Tragwalzen 5 und 9' auf die Wickelrolle 7b. Die Zwischenräume zwischen den Wickelrollen und den Tragwalzen sind wiederum mittels Längsdichtleisten 6' und Enddichtelementen 34 (z. B. "Seitenschilden") nach außen hin abgedichtet, so daß darin - wie anhand der Figur 1 beschrieben - ein Druckluftpolster aufgebaut werden kann (mittels Überdruckkasten 15 und Druckluftleitung 28). FIG. 2 shows a three-roll winding machine with one central support roller 5 and with two outer, smaller support rollers 9 'and 9' '. The longitudinally cut web of material, e.g. B. Paper web, runs along line P over the central support roller 5 into the machine. At least one of the cut ones Partial webs on the support rollers 5 and 9 "to a winding 7a rolled up while at least a second partial web over the rollers 9 'and 5 are rolled up into a roll 7b. According to a variant can also be done as follows: The longitudinally cut partial webs are already on the circumference a web guide roller 3 separately, so that the at least one Partial web intended for one winding roll 7a (or more) is along the dot-dash line Pa over another Guide roller 4 and via the support roller 9 '' enters the machine. The other partial web (s) run or run as So far along the line P on the support rollers 5 and 9 ' the winding roll 7b. The spaces between the winding rolls and the support rollers are in turn by means of longitudinal sealing strips 6 'and end sealing elements 34 (e.g. "side plates") sealed to the outside, so that - as on the basis of Figure 1 described - a compressed air cushion can be built can (by means of pressure box 15 and compressed air line 28).

    An einem Längsträger 45 sind längsverschiebbare Wickelböcke 47, 49 gelagert, welche nach unten in das jeweilige Wickelbett ragen und zur beidseitigen Führung der Wickelrollen 7a, 7b dienen. Jeder der Wickelböcke 47,49 ist mit einer mittels Hubeinrichtung 48 vertikal verschiebbaren Hülsenführung 46 ausgestattet. Jede Hülsenführung 46 trägt einen axial verschiebbaren Spannkopf, der in das (von einer Wickelhülse gebildete) Zentrum der betreffenden Wickelrolle eingreift. Rollen-Ausstoß-Einrichtungen sind mit 42, 44 und Rollen-Absenk-Einrichtungen mit 53, 54 bezeichnet.On a longitudinal member 45 are longitudinally movable winding blocks 47, 49 stored, which down into the respective changing bed protrude and to guide the winding rollers 7a, 7b on both sides serve. Each of the winding blocks 47,49 is with a means Lifting device 48 vertically displaceable sleeve guide 46 fitted. Each sleeve guide 46 carries one axially sliding clamping head, which in the (from a winding tube formed) engages the center of the winding roll in question. Roller ejection devices are available with 42, 44 and roller lowering devices designated 53, 54.

    Die mittlere Tragwalze 5 hat einen (vorzugsweise gemäß DE 3843246 C) perforierten Walzenmantel und einen Sauganschluß 5a. Hierdurch kann zeitweise im Inneren der Tragwalze 5 Unterdruck erzeugt werden, insbesondere um während des Rollenwechsels nach dem Durchtrennen der Teil-Bahnen die neuen Bahnanfänge an der Tragwalze 5 zu halten.The middle support roller 5 has a (preferably according to DE 3843246 C) perforated roller jacket and a suction connection 5a. As a result, vacuum can sometimes be generated in the interior of the support roller 5 are generated, in particular during the role change after cutting the partial webs, the new beginning of the web to hold the support roller 5.

    Falls erforderlich, kann im Bereich des unter einer Wickelrolle 7b gebildeten Druckluftpolsters eine stationäre Abdeckung 5b vorgesehen werden, die ein Entweichen von Druckluft durch die Perforation verhindert.If necessary, can be in the range of one Winding roll 7b formed a compressed air cushion a stationary Cover 5b are provided, which prevent escape Compressed air prevented by the perforation.

    Die Walze 9" kann eine Unterdruckzone 9b aufweisen.The roller 9 "can have a vacuum zone 9b.

    Die Figur 3 zeigt eine Möglichkeit des Aufbaues der Wickel-tragwalze 9 der Figur 1 oder 9' oder 9'' der Figur 2. Schematisch angedeutet ist ein perforierter Walzenmantel 10, der mittels der üblichen Elemente (Walzendeckel 11 und 12) drehbar in Lagern 13 und 14 ruht. Im Inneren befindet sich ein stationärer Überdruckkasten 15 bis 20, der mit Hilfe von Längsdichtungen 21 und 22 (Fig. 1) und Umfangsdichtungen 24, 25 eine Überdruckzone 9a begrenzt. Der Kasten 15 umfaßt einen z. B. rohrförmigen Mantel 16 mit Öffnungen 29 und Stirnwänden 17 und 18. Er ist am einen Ende über ein Druckrohr 20 am Gehäuse des Lagers 14 abgestützt, am anderen Ende über einen Stutzen 19 und ein Lager im Walzendeckel 11. Für den Einsatz der Walze 9 in einer Zwei-Walzen-Wickelmaschine gemäß Figur 1 ist eine einheitliche Überdruckzone vorgesehen, die sich im wesentlichen über die gesamte Länge des Überdruckkastens 15 erstreckt. Soll die Walze dagegen in der Drei-Walzen-Wickelmaschine gemäß Figur 2 eingesetzt werden, so sind zusätzliche Umfangsdichtungen (und ggf. eine Abdeckung bei 29a) erforderlich, um beispielsweise zwei voneinander getrennte Überdruckzonen zu bilden. Die Umfangsdichtungen 24 - 27 sind parallel zur Walzendrehachse verschiebbar oder in unterschiedlichen Positionen am Mantel 16 befestigbar.FIG. 3 shows one possibility of building the winding support roller 9 of Figure 1 or 9 'or 9' 'of Figure 2. Schematic is indicated a perforated roller shell 10, the by means of the usual elements (roller cover 11 and 12) rotatable rests in camps 13 and 14. Inside is a stationary one Overpressure box 15 to 20 using longitudinal seals 21 and 22 (Fig. 1) and peripheral seals 24, 25 a Overpressure zone 9a limited. The box 15 includes a z. B. tubular jacket 16 with openings 29 and end walls 17 and 18. It is at one end via a pressure pipe 20 on the housing of the Bearing 14 supported, at the other end via a nozzle 19th and a bearing in the roller cover 11. For the use of the roller 9 in a two-roll winding machine according to FIG. 1 there is one uniform overpressure zone provided, which is essentially extends over the entire length of the pressure box 15. On the other hand, the roller should be used in the three-roller winding machine Figure 2 are used, so are additional peripheral seals (and possibly a cover at 29a) is required, for example to form two separate pressure zones. The peripheral seals 24-27 are parallel to the roll axis of rotation movable or in different positions on Coat 16 attachable.

    Die Figur 3 zeigt noch eine Möglichkeit, um über die Leitung 28 mit Hilfe eines Umsteuerventils 30 das Innere des Kastens 15 wahlweise mit der Druckseite oder mit der Saugseite eines Gebläses 31 zu verbinden. Hierdurch kann beim Rollenwechsel, solange also das genannte Druckluftpolster nicht benötigt wird, in einem Teil der Bohrungen des Walzenmantels 10 Unterdruck erzeugt werden, um die Bahn an der Tragwalze 9 festzuhalten.Figure 3 shows another way to go over the line 28 with the help of a reversing valve 30 the inside of the box 15 either with the pressure side or with the suction side of one Blower 31 to connect. As a result, when changing roles, as long as the compressed air cushion mentioned is not required is, in a part of the holes in the roll shell 10 negative pressure are generated to hold the web on the support roller 9.

    Eine andere Möglichkeit ist in Figur 4 dargestellt; dort ist zusätzlich zu voneinander getrennten Teil-Überdruckzonen 9a' eine durchgehende Unterdruckzone 9b vorhanden, die zeitweise an eine Unterdruckquelle 31a anschließbar ist. Abweichend von Fig. 4 könnte man jeder Teil-Überdruckzone 9a' eine Teil-Unterdruckzone zuordnen. Die Figur 4 zeigt außerdem folgendes: Die Überdruckseite ist mit Hilfe zahlreicher Umfangsdichtungen 24a - 24n und dazugehörender Trennwände 32 in mehrere entlang der Walzenachse aneinander gereihter Sektionen unterteilt, von denen jede mittels eines individuell steuerbaren Auf-Zu-Ventils 33 an die Druckluftquelle 31 anschließbar ist. Hierdurch kann die Anzahl und die Position der einzelnen Teil-Überdruckzonen 9a' und deren Länge bestimmt (und bei Bedarf wieder geändert) werden. Diese Methode ist ausreichend, falls für den genannten Zweck ein relativ grobes Raster zulässig ist.Another possibility is shown in Figure 4; there is in addition to separate partial overpressure zones 9a ' a continuous negative pressure zone 9b is present at times can be connected to a vacuum source 31a. Deviating from Fig. 4 could be a partial negative pressure zone each partial overpressure zone 9a ' assign. FIG. 4 also shows the following: The overpressure side is with the help of numerous peripheral seals 24a-24n and associated partitions 32 in several along the roller axis subdivided sections, by each one with an individually controllable on-off valve 33 can be connected to the compressed air source 31. Hereby can determine the number and position of the individual partial overpressure zones 9a 'and their length determined (and changed again if necessary) become. This method is sufficient if for the a relatively coarse grid is permitted.

    Die Figuren 5 und 6 zeigen eine andere Bauweise einer Tragwalze 9', bei der das Einteilen der Überdruckzonen nach einem wesentlich feineren Raster möglich ist. Der Überdruckkasten 15A ist zu diesem Zweck unterteilt in eine Überdruckkammer 35, die sich über die ganze Walzenlänge erstreckt und in einen Gitterkörper 36. Dazwischen ist eine Zwischenwand 37 mit zahlreichen Öffnungen 38, die ähnlich wie in Figur 4, mit Hilfe von Ventilen 39 steuerbar sind. Der Gitterkörper 36 ist zum Walzenmantel 10 hin offen und hat eine Vielzahl von achsnormalen Gitterwänden 36a, die mit der Innenfläche des Walzenmantels Dichtspalte bilden. Der Abstand zwischen zwei benachbarten Gitterwänden kann relativ klein gewählt werden, jedenfalls wesentlich kleiner als der kleinstmögliche Abstand zwischen zwei Ventilen 39. Durch die Gesamtheit der achsnormalen Gitterwände 36a erstreckt sich eine achsparallele Bohrung 36b, die in jeder Gitterwand eine Ausnehmung bildet. In diese Bohrung ist ein sogenannter Steuerkörper 40 einschiebbar, der im wesentlichen aus einer Stange 40a und aus mehreren darauf befestigten Dichtscheiben 40b besteht, deren Außendurchmesser dem Durchmesser der Bohrung 36b entspricht. Die Anzahl und die Position der Dichtscheiben ist beliebig wählbar. Man wird also jede Dichtscheibe 40b einer zuvor ausgewählten Gitterwand 36a zuordnen. Es entstehen somit Sektionen beliebiger Anzahl, Position und Größe. Ausgewählte Sektionen werden sodann mit Druckluft beaufschlagt durch Öffnen der betreffenden Ventile 39. Der stationäre Überdruckkasten 15A ruht an einem seiner Enden unmittelbar in einem Support 14A. Daneben ist der Walzenmantel 10 drehbar auf dem Überdruckkasten 15A gelagert.Figures 5 and 6 show another construction of a support roller 9 ', in which the division of the overpressure zones after a much finer grid is possible. The pressure box 15A is divided into an overpressure chamber 35 for this purpose, which extends over the entire length of the roll and into one Lattice body 36. Between them is an intermediate wall 37 with numerous Openings 38, similar to that in Figure 4, with the help are controllable by valves 39. The grid body 36 is for Roll shell 10 open and has a variety of axially normal Grid walls 36a, which with the inner surface of the roll shell Form a sealing gap. The distance between two neighboring ones Lattice walls can be chosen to be relatively small, at least much smaller than the smallest possible distance between two valves 39. Through the entirety of the axially normal Grid walls 36a extend an axially parallel bore 36b, which forms a recess in each grid wall. In these A so-called control body 40 can be inserted into the bore essentially of a rod 40a and several on it attached sealing washers 40b, the outer diameter corresponds to the diameter of the bore 36b. The number and the The position of the sealing washers can be selected as required. So you will each sealing washer 40b of a previously selected grid wall 36a assign. This creates sections of any number, Position and size. Selected sections are then included Compressed air is applied by opening the relevant valves 39. The stationary pressure box 15A rests on one of its End immediately in a support 14A. Next to it is the Roller jacket 10 rotatably mounted on the pressure box 15A.

    Claims (14)

    1. Winding machine for winding or unwinding a material web, e.g. a paper web, having the following features:
      a) the winding machine includes at least two support rolls (8, 9), at least one (9) of which has a rotatable, perforated roll shell (10) and the inner space of which has a stationary excess-pressure box (15) which is open towards the inner face of the shell and can be connected to a compressed-air source (31);
      b) the excess-pressure box (15) has two longitudinal seals which delimit an excess-pressure zone (9a);
      c) the intermediate space situated between two adjacent support rolls (8, 9) and the wound roll (7) situated thereon can be sealed towards the exterior in the nip between the two rolls by means of a longitudinal sealing element (6) and at both ends of the wound roll by means of respective end sealing elements (34);
      characterised by the following further features:
      d) the longitudinal seals (21, 22) of the excess-pressure box (15) are arranged in such a manner that the excess-pressure zone (9a) extends approximately from the said longitudinal sealing element (6) to the point at which the wound roll (7) rests on the support roll (9).
    2. Winding machine according to claim 1, characterised in that the longitudinal sealing element (6) is a strip which can be moved from below into the nip between the rolls (8, 9).
    3. Winding machine according to claim 2, characterised in that the cross section of the longitudinal sealing strip (6) extends at least approximately to the narrowest point of the nip between the two support rolls (8, 9).
    4. Winding machine according to one of claims 1 to 3, characterised in that the excess-pressure box (15) is immovably fixed in the interior of the support roll (9).
    5. Winding machine according to one of claims 1 to 4, characterised in that the excess-pressure box (15) is provided at least in the region of each roll end with a circumferential seal (24, 25) which is adjustable parallel to the roll axis for the purposes of adaptation to the respective web width.
    6. Winding machine according to one of claims 1 to 5, characterised in that the excess-pressure box (15) can be uncoupled temporarily from the compressed-air source (31) and connected to a negative-pressure source.
    7. Winding machine according to one of claims 1 to 5, characterised in that the support roll (9) is preferably provided directly upstream of the excess-pressure zone (9a) in the direction of rotation with a negative-pressure zone (9b).
    8. Winding machine according to one of claims 1 to 7, characterised in that it is in the form of a three-roll reel slitter so that it is suitable for winding several webs cut to a partial web width, each of the two outer support rolls (9', 9") supporting only part of the wound rolls (7a, 7b).
    9. Winding machine according to claim 8, characterised in that the support roll having a perforated roll shell has a separate partial excess-pressure zone (9a, 9a') for each wound roll supported thereon (Fig. 4).
    10. Winding machine according to claim 9, characterised in that the support roll additionally has a separate negative-pressure zone for each wound roll.
    11. Winding machine according to claim 9, characterised in that one single negative-pressure zone (9b) is provided, extending essentially over the entire width of the web.
    12. Winding machine according to one of claims 9 to 11, characterised in that not only the length, but also the number of the partial excess-pressure zones (9a, 9a') can be varied.
    13. Winding machine according to claim 12, characterised in that the excess-pressure box (15) has a plurality of sections which are arranged in a row along the roll axis and each of which can be connected to the excess-pressure source (31) by means of an individually controllable valve (33) (Fig. 4).
    14. Winding machine according to claim 12, characterised by the following features:
      a) the stationary excess-pressure box (15A) has a continuous excess-pressure chamber (35) along the entire length of the roll and, separated from the latter by an intermediate wall (37), a grid body (36) which is open towards the roll shell (10) and has a plurality of axially normal grid walls (36a) forming sealing gaps together with the inner face of the roll shell;
      b) an axially parallel bore (36b) extends through the grid body (36) and forms a recess in each grid wall (36a);
      c) any desired number of recesses can be closed by means of respective sealing washers (40b), and
      d) any desired regions of the grid body (36) can be connected to the excess-pressure chamber (35) by means of respective two-position valves (39) situated in the intermediate wall (37).
    EP97101108A 1996-02-23 1997-01-24 Winding machine for winding or unwinding a material web Expired - Lifetime EP0791550B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19606755A DE19606755A1 (en) 1996-02-23 1996-02-23 Winding machine for winding or unwinding a material web
    DE19606755 1996-02-23

    Publications (3)

    Publication Number Publication Date
    EP0791550A2 EP0791550A2 (en) 1997-08-27
    EP0791550A3 EP0791550A3 (en) 1998-01-21
    EP0791550B1 true EP0791550B1 (en) 2001-06-27

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    ID=7786202

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97101108A Expired - Lifetime EP0791550B1 (en) 1996-02-23 1997-01-24 Winding machine for winding or unwinding a material web

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    US (1) US5823463A (en)
    EP (1) EP0791550B1 (en)
    JP (1) JP2866072B2 (en)
    KR (1) KR970061743A (en)
    AT (1) ATE202536T1 (en)
    BR (1) BR9700284A (en)
    CA (1) CA2197593C (en)
    DE (2) DE19606755A1 (en)
    ES (1) ES2158380T3 (en)
    ID (1) ID16043A (en)

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    Also Published As

    Publication number Publication date
    DE59703879D1 (en) 2001-08-02
    BR9700284A (en) 1998-10-27
    ES2158380T3 (en) 2001-09-01
    EP0791550A3 (en) 1998-01-21
    CA2197593A1 (en) 1997-08-24
    ID16043A (en) 1997-08-28
    DE19606755A1 (en) 1997-08-28
    EP0791550A2 (en) 1997-08-27
    US5823463A (en) 1998-10-20
    CA2197593C (en) 2001-07-03
    KR970061743A (en) 1997-09-12
    JPH09227001A (en) 1997-09-02
    JP2866072B2 (en) 1999-03-08
    ATE202536T1 (en) 2001-07-15

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