EP0442038A2 - Method and device for automatically replacing a full roll by a new winding core - Google Patents

Method and device for automatically replacing a full roll by a new winding core Download PDF

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Publication number
EP0442038A2
EP0442038A2 EP90119865A EP90119865A EP0442038A2 EP 0442038 A2 EP0442038 A2 EP 0442038A2 EP 90119865 A EP90119865 A EP 90119865A EP 90119865 A EP90119865 A EP 90119865A EP 0442038 A2 EP0442038 A2 EP 0442038A2
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EP
European Patent Office
Prior art keywords
web
roller
winding
support
roll
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.)
Granted
Application number
EP90119865A
Other languages
German (de)
French (fr)
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EP0442038B1 (en
EP0442038A3 (en
Inventor
Hartmut Dropczynski
Ernst Günther Urban
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Jagenberg AG
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Jagenberg AG
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Publication date
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Publication of EP0442038A2 publication Critical patent/EP0442038A2/en
Publication of EP0442038A3 publication Critical patent/EP0442038A3/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
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2238—The web roll being driven by a winding mechanism of the nip or tangential drive type
    • B65H19/2246—The web roll being driven by a winding mechanism of the nip or tangential drive type and the roll being supported on two 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
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B65H19/286—Attaching the leading end of the web to the replacement web-roll core or spindle by applying adhesive to the 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/418—Changing web roll
    • B65H2301/4182—Core or mandrel insertion, e.g. means for loading core or mandrel in winding position
    • B65H2301/41826—Core or mandrel insertion, e.g. means for loading core or mandrel in winding position by gripping or pushing means, mechanical or suction gripper

Definitions

  • the invention relates to a method for automatically changing a full winding roll against a new winding tube in support roller winding machines and a support roller winding machine for carrying out the method.
  • a device On support roller winding machines for heavier types of paper, a device is known from DE-OS 31 51 256 which consists of a structural unit which can be pivoted about the axis of one of the support rollers by means of pivoting levers and comprises a stapling and cutting device.
  • the cutting device is an active knife that can be moved across the web width and cuts the web on the winding tube, with the newly formed beginning of the web being stapled or glued to the winding tube.
  • the device for cutting and tacking the web is very complex in construction and takes a relatively long time.
  • DE-OS 36 11 895 describes a generic method in a back-up roll winding machine in which the web of material is first weakened before reaching the back-up roll, a trace of glue is applied to both sides of the weakening and the web is separated by braking on the back-up roll.
  • the web ends stick to the surface due to the negative pressure prevailing in the support roller until they have reached the winding roll and stick to it.
  • the newly created web beginnings remain braked during this movement, so that the support roller spins under the suctioned web start until the unloaded finished rolls and release of the brake, the glued web start is transported from the support roller to the sleeves and glued.
  • the invention has for its object to improve a generic method so that it can be used in support roller winding machines even when winding heavy paper (greater than 120 g / m2) for the fastest and most reliable roll change.
  • claim 2 contains a particularly advantageous variant of a method according to claim 1, claims 3 to 5 support roller winding machines for carrying out a method according to the invention are claimed.
  • the particularly advantageous embodiment according to claim 5 enables the processing of paper or cardboard webs of the entire basis weight range with very little downtime for a roll change.
  • the carrier roller winding machine has two driven carrier rollers 1, 2, between which a roller bed 3 is formed, in which the winding rollers 4 rest on the carrier rollers 1, 2 during winding.
  • Such double carrier roll winding machines are widely known and z. B. described in DE-OS 32 07 461, so that individual parts, insofar as they do not relate to the invention, are not dealt with.
  • the wrapped support roller 1 is designed as a suction roller, it can be subjected to a vacuum to hold the web 5.
  • a machine-wide support 6 which can be raised and lowered and which, at its upper end, carries a separating knife 7 which can be folded in the direction of the support roller 1 and extends over the entire working width and which thus passes through the gap between the Carrier rollers 1, 2 moved into the upper gusset between the two carrier rollers 1, 2 (roller bed 3) and at the same time can be lowered into a position that does not interfere with the winding.
  • rollers 8 are freely rotating and resiliently mounted on the support 6 over the working width in such a way that they abut the circumference of the supporting roller 1 in a position slightly above the narrowest point between the two supporting rollers 1, 2.
  • a perforating device 10 and two adhesive tape dispensers 11, 12 are arranged on the inlet side, just before the web 5 touches the support roller 1.
  • the perforating device 10 consists of a toothed knife which extends over the working width and which can be moved into the groove of a counter-holder 13 arranged on the other side of the web.
  • the counter-holder 13 has, in addition to the groove, support surfaces for the web 5, so that it cannot deflect when perforating and applying the double-sided adhesive tapes.
  • adhesive tape dispensers 11, 12 for narrow adhesive tapes which are glued across the web 5 are arranged on both sides of the perforating device 10.
  • a large number of adhesive tape dispensers 11.1 are arranged across the working width and release their adhesive tapes in the direction of web travel. This has the advantage that the adhesive tapes can be attached by means of the moving web. The downtime of the winding machine can be further reduced if the tape is applied when the machine is restarted after perforating.
  • the counter-holder 13 can be attached to the bottom of the swivel arms 14.1, so that it can be moved against the web 5 by pivoting the ejection roller 14.
  • a sleeve insertion device 15 is attached to the swivel arms 14.1 in the area between the ejection roller 14 and the support roller 1, for. B. a sleeve pliers or a sleeve trough, with which a set of new sleeves 16 can be inserted into the roller bed 3.
  • the sleeve insertion device 17 can also be fastened in a known manner separately from the ejection roller 14 to swivel arms 17.1 which can be pivoted about the support roller 2, in order to insert a set of new sleeves 16 into the roller bed 3 via the support roller 2. It is also possible to provide a winding machine with both core insertion devices 15, 17. Then the device 15 pivoting about the support roller 1 is used for inserting sleeves with a small diameter, the device 17 for inserting sleeves with a large diameter.
  • the roll change is carried out as follows: When the winding roll 4 has reached a predetermined web length or a predetermined diameter, the carrier roller winding machine is stopped; ie the drives of the support rollers 1, 2 are braked. The web 5 comes under the braking force that is applied by the unrolling device, not shown Train to stand. In the area in front of the wrapped support roller 1, two adjacent double-sided adhesive tapes are now applied by the adhesive tape dispensers 11, 12 across the width of the web 5. Simultaneously or immediately thereafter, the material web 5 is weakened with the perforating device 10 over its entire width. The degree of weakening is set depending on the type of material, so that the force required to separate the web 5 is always approximately the same regardless of the type of material.
  • the machine is then started again until the weakened web site with the two adhesive strips 18, 19 is in the roller bed 3, but still below the line of contact of the new sleeves 16 still to be inserted on the support roller 1.
  • the web 5 is stopped again and the brake on the unwinding device is locked so that the web 5 is retained with maximum force.
  • the support 6 is raised so that the rollers 8 clamp the web 5 at a short distance below the weakened point on the support roller 1.
  • the separating knife 7 is not used, and is therefore not folded in the direction of the supporting roller 1. If necessary, the holding of the web 5 on the support roller 1 can be supported by applying a vacuum.
  • the full winding roll 4 is raised slightly with the ejection roll 14 and the support roller 2 is driven in the direction of arrow 20 counterclockwise. It thus rotates the roller 4 in a clockwise direction (arrow 21), so that a tension is exerted on the weakened web site, which leads to the web 5 being severed at this location.
  • the winding roller 4 is rotated until the adhesive tape 18 located at the end of the web has been forced through the gap between the ejection roller 14 and the winding roller 4, so that the end of the web 5 is firmly connected to the winding roller 4.
  • the ejection roller 14 is then pivoted further in the direction of the support roller 2 and the full winding roller 4 is ejected from the roller bed 3.
  • a set of new sleeves 16 is inserted into the Roll bed 3 inserted.
  • the support rollers 1, 2 are set in motion again in order to bring the newly created beginning of the web into contact with the sleeves 16 with the adhesive strip 19.
  • the support 6 with the roller 8 is lowered into a non-disturbing position and the Carrier roll winding machine can be accelerated to full winding speed.
  • the support 6 is raised so far that the rollers 8 do not support the roller 1 touch more.
  • the web 5 is held exclusively by the negative pressure in the support roller 1 on its surface.
  • the knife 7 pivots in the direction of the support roller 1, a small distance being maintained in order to avoid damage.
  • the web 5 is severed by ejecting the full winding roll 4 via the support roller 2 by means of the ejection roll 14, the separating knife 7 acting as a passive tear-off edge.
  • the support 6 is lowered again with the separating knife 7 and a set of new sleeves 16 is inserted.
  • Adhesive tapes or traces of glue are attached to the sleeves 16 in a known manner in order to fasten the newly created path start to them.
  • the winding of the start of the web on the sleeves 16 takes place automatically after the pressure roller 22 has been put on when the carrier roller machine is restarted by rotating the two carrier rollers 1, 2.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

According to the invention, in a supporting-cylinder winding machine having two driven supporting cylinders (1, 2), in which the material web (5), deflected by one supporting cylinder (1), is guided from below through the supporting-cylinder nip into the cylinder bed (3), the automatic replacement of a full winding roll (4) by a new winding tube (16) is carried out by the following steps:   - the material web (5) is stopped and is weakened in the region in front of the supporting cylinder (1), and an adhesive is applied on both sides of the weakening,   - the weakened point is moved into the cylinder bed (3) and is stopped there below the line of contact of the empty winding tube (16) against the supporting cylinder (1),   - the new web start to be provided is retained on the looped-round supporting cylinder (1),   - subsequently, as a result of the rotation of the full winding roll (4) by means of the supporting cylinder (2), not looped round, counter to a braking force, the web (5) is severed and the web end is glued to the full roll (4),   - thereafter, the full winding roll (4) is removed from the winding bed (3), and after the insertion of the new winding tube (16) this is glued to the new web start as a result of the rotation of the two supporting cylinders (1, 2). <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum automatischen Wechseln einer vollen Wickelrolle gegen eine neue Wickelhülse bei Tragwalzen-Wickelmaschinen und eine Tragwalzen-Wickelmaschine zur Durchführung des Verfahrens.The invention relates to a method for automatically changing a full winding roll against a new winding tube in support roller winding machines and a support roller winding machine for carrying out the method.

Bei Wickelmaschinen zum Aufwickeln von Materialbahnen, insbesondere von Papier- oder Kartonbahnen, ist man bestrebt, die durch einen Rollenwechsel bedingten Maschinenstillstandszeiten möglichst gering zu halten. Dabei muß gewährleistet sein, daß der beim Durchtrennen geschaffene neue Bahnanfang sicher an der neuen Wickelhülse befestigt wird.In the case of winding machines for winding material webs, in particular paper or cardboard webs, efforts are made to keep the machine downtimes caused by a roll change as short as possible. It must be ensured that the new web start created when cutting is securely attached to the new winding tube.

Für einen automatisierten Rollenwechsel bei Tragwalzen-Wickelmaschinen ist aus der DE-OS 29 20 707 ein Verfahren bekannt, bei dem die zwischen den Tragwalzen hindurchgeführte Warenbahn während des Trennens durch Unterdruck an dem Umfang einer Tragwalze angesaugt wird. Das Durchtrennen der Bahn erfolgt mittels einer durch den Tragwalzenspalt hochfahrenden Trenneinrichtung, an deren Abreißklinge die Bahn beim Ausstoßen der vollen Wickelrolle abreißt. Dieses Verfahren ist nur bei leichten Papiersorten (bis ca. 120 g/m²) problemlos einsetzbar, bei schwereren Papiersorten bereitet das Durchtrennen der Bahn mit dem inaktiven Trennmesser und das Festhalten durch Unterdruck an der Tragwalze Probleme.For an automated roll change in support roller winding machines, a method is known from DE-OS 29 20 707 in which the web of material passed between the support rollers is sucked in by vacuum under the circumference of a support roller. The web is cut by means of a separating device which rises through the nip, on the tear-off blade of which the web is ejected when the full winding roll is ejected tears off. This method can only be used without problems with light paper types (up to approx. 120 g / m²). With heavier paper types, cutting the web with the inactive cutting knife and holding it down due to negative pressure on the carrier roller are problematic.

An Tragwalzen-Wickelmaschinen für schwerere Papiersorten ist aus der DE-OS 31 51 256 eine Vorrichtung bekannt, die aus einer um die Achse einer der Tragwalzen mittels Schwenkhebeln schwenkbaren baulichen Einheit aus einer Heft- und Schneidvorrichtung besteht. Die Schneidvorrichtung ist ein aktives, über die Bahnbreite bewegbares Messer, das die Bahn auf der Wickelhülse durchschneidet, wobei der neugebildete Warenbahnanfang an der Wickelhülse festgeheftet oder festgeklebt wird. Die Vorrichtung zum Durchschneiden und Anheften der Bahn ist konstruktiv sehr aufwendig und benötigt relativ viel Zeit.On support roller winding machines for heavier types of paper, a device is known from DE-OS 31 51 256 which consists of a structural unit which can be pivoted about the axis of one of the support rollers by means of pivoting levers and comprises a stapling and cutting device. The cutting device is an active knife that can be moved across the web width and cuts the web on the winding tube, with the newly formed beginning of the web being stapled or glued to the winding tube. The device for cutting and tacking the web is very complex in construction and takes a relatively long time.

Die DE-OS 36 11 895 beschreibt ein gattungsgemäßes Verfahren bei einer Stützwalzen-Wickelmaschine, bei dem die Warenbahn vor Erreichen der Stützwalze zunächst geschwächt, beiderseits der Schwächung je eine Leimspur aufgetragen und die Warenbahn durch Abbremsen auf der Stützwalze getrennt wird. Die Bahnenden haften aufgrund des in der Stützwalze herrschenden Unterdrucks an deren Oberfläche bis sie die Wickelrolle erreicht haben und mit dieser verkleben. Die neugeschaffenen Bahnanfänge bleiben bei dieser Bewegung gebremst, so daß die Stützwalze unter dem angesaugten Bahnanfang durchdreht bis nach dem Entladen der Fertigrollen und Lösen der Bremse der geleimte Bahnanfang von der Stützwalze zu den Hülsen transportiert und angeklebt wird.DE-OS 36 11 895 describes a generic method in a back-up roll winding machine in which the web of material is first weakened before reaching the back-up roll, a trace of glue is applied to both sides of the weakening and the web is separated by braking on the back-up roll. The web ends stick to the surface due to the negative pressure prevailing in the support roller until they have reached the winding roll and stick to it. The newly created web beginnings remain braked during this movement, so that the support roller spins under the suctioned web start until the unloaded finished rolls and release of the brake, the glued web start is transported from the support roller to the sleeves and glued.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren so zu verbessern, daß es bei Tragwalzen-Wickelmaschinen auch beim Aufwickeln von schweren Papiersorten (größer 120 g/m²) für einen möglichst schnellen und zuverlässigen Rollenwechsel eingesetzt werden kann.The invention has for its object to improve a generic method so that it can be used in support roller winding machines even when winding heavy paper (greater than 120 g / m²) for the fastest and most reliable roll change.

Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst. Als wesentlicher weiterer Vorteil tritt hinzu, daß es möglich ist, Tragwalzen-Wickelmaschine mit Rollenwechselvorrichtungen für leichte Papiersorten - wie in der DE-OS 29 20 707 und DE-OS 29 48 877 beschrieben - so aus- oder nachzurüsten, daß sie zusätzlich schwere Papiersorten verarbeiten können. Die so aus- oder nachgerüsteten Tragwalzen-Wickelmaschinen können somit Papier- oder Kartonbahnen des gesamten Flächengewichtsbereichs verarbeiten, wobei auch bei der Verarbeitung von schweren Papiersorten die bekannt kürzeren Rollenwechselzeiten von leichten Papiersorten annähernd erreicht werden.This object is achieved with the features of patent claim 1. Another significant advantage is that it is possible Carrier roll winding machine with roll changing devices for light paper types - as described in DE-OS 29 20 707 and DE-OS 29 48 877 - so that they can also process heavy paper types. The carrier roll winding machines equipped or retrofitted in this way can thus process paper or cardboard webs of the entire basis weight range, the known shorter roll change times of light paper types being approximately achieved even when processing heavy paper types.

Während Patentanspruch 2 eine besonders vorteilhafte Variante eines Verfahrens nach Anspruch 1 enthält, sind in den Ansprüchen 3 bis 5 Tragwalzen-Wickelmaschinen zur Durchführung eines erfindungsgemäßen Verfahrens beansprucht.While claim 2 contains a particularly advantageous variant of a method according to claim 1, claims 3 to 5 support roller winding machines for carrying out a method according to the invention are claimed.

Die besonders vorteilhafte Ausgestaltung nach Anspruch 5 ermöglicht die Verarbeitung von Papier- oder Kartonbahnen des gesamten Flächengewichtsbereichs bei sehr geringen Stillstandszeiten für einen Rollenwechsel.The particularly advantageous embodiment according to claim 5 enables the processing of paper or cardboard webs of the entire basis weight range with very little downtime for a roll change.

Nachfolgend wird die Erfindung anhand eines vereinfacht dargestellten Ausführungsbeispiels einer Tragwalzen-Wickelmaschine beschrieben.

Fig. 1
zeigt grob schematisch eine Seitenansicht einer Tragwalzen-Wickelmaschine, wobei der Rollenwechsel bei schweren Papiersorten durchgezogen, bei leichten Papiersorten gestrichelt gezeichnet ist.
The invention is described below with reference to an embodiment of a carrier roller winding machine which is shown in simplified form.
Fig. 1
shows, roughly schematically, a side view of a support roller winding machine, the roll change being drawn through for heavy paper types and drawn with dashed lines for light paper types.

Die Tragwalzen-Wickelmaschine weist zwei angetriebene Tragwalzen 1, 2 auf, zwischen denen ein Walzenbett 3 ausgebildet ist, in dem die Wickelrollen 4 während des Aufwickelns auf den Tragwalzen 1, 2 aufliegen. Die in Längsrichtung in Einzelbahnen aufgeteilte Materialbahn 5, vorzugsweise eine Papier- oder Kartonbahn, wird von unten, von der Tragwalze 1 umgelenkt, zwischen den Tragwalzen 1, 2 in das Walzenbett 3 geführt und auf fluchtend aufgereihte Hülsen gewickelt. Derartige Doppeltragwalzen-Wickelmaschinen sind vielfach bekannt und z. B. in der DE-OS 32 07 461 beschrieben, so daß auf Einzelteile, soweit sie nicht die Erfindung betreffen, nicht eingegangen wird.The carrier roller winding machine has two driven carrier rollers 1, 2, between which a roller bed 3 is formed, in which the winding rollers 4 rest on the carrier rollers 1, 2 during winding. The material web 5, preferably a paper or cardboard web, which is divided in the longitudinal direction into individual webs, is deflected from below by the support roller 1, guided between the support rollers 1, 2 into the roller bed 3 and wound onto sleeves lined up in alignment. Such double carrier roll winding machines are widely known and z. B. described in DE-OS 32 07 461, so that individual parts, insofar as they do not relate to the invention, are not dealt with.

Die umschlungene Tragwalze 1 ist als Saugwalze ausgebildet, sie kann zum Festhalten der Bahn 5 mit Unterdruck beaufschlagt werden. Im Bereich zwischen den beiden Tragwalzen 1, 2 ist eine maschinenbreite heb- und senkbare Stütze 6 angeordnet, die an ihrem oberen Ende ein in Richtung zur Tragwalze 1 klappbares, sich über die gesamte Arbeitsbreite erstreckendes Trennmesser 7 trägt, das so durch den Spalt zwischen den Tragwalzen 1, 2 bis in den oberen Zwickel zwischen den beiden Tragwalzen 1, 2 (Walzenbett 3) bewegt und zugleich in eine das Aufwickeln nicht störende Position abgesenkt werden kann. Unterhalb des Gelenks des Trennmessers 7 sind an der Stütze 6 über die Arbeitsbreite eine Vielzahl Rollen 8 freidrehend und federnd so gelagert, daß sie in einer Position etwas oberhalb der engsten Stelle zwischen den beiden Tragwalzen 1, 2 am Umfang der Tragwalze 1 anliegen.The wrapped support roller 1 is designed as a suction roller, it can be subjected to a vacuum to hold the web 5. In the area between the two support rollers 1, 2 there is a machine-wide support 6 which can be raised and lowered and which, at its upper end, carries a separating knife 7 which can be folded in the direction of the support roller 1 and extends over the entire working width and which thus passes through the gap between the Carrier rollers 1, 2 moved into the upper gusset between the two carrier rollers 1, 2 (roller bed 3) and at the same time can be lowered into a position that does not interfere with the winding. Below the joint of the cutting knife 7, a plurality of rollers 8 are freely rotating and resiliently mounted on the support 6 over the working width in such a way that they abut the circumference of the supporting roller 1 in a position slightly above the narrowest point between the two supporting rollers 1, 2.

An der Einlaufseite, kurz bevor die Bahn 5 die Tragwalze 1 berührt, sind eine Perforiereinrichtung 10 und beidseits von dieser zwei Klebebandspender 11, 12 angeordnet. Die Perforiereinrichtung 10 besteht aus einem gezahnten, sich über die Arbeitsbreite erstreckenden Messer, das in die Nut eines auf der anderen Bahnseite angeordneten Gegenhalters 13 einfahrbar ist. Der Gegenhalter 13 weist neben der Nut Abstützflächen für die Bahn 5 auf, damit diese beim Perforieren und Auftragen der doppelseitig klebenden Klebebänder nicht ausweichen kann. Im vorliegenden Ausführungsbeispiel sind zu beiden Seiten der Perforiereinrichtung 10 Klebebandspender 11, 12 für schmale Klebebänder, die quer über die Bahn 5 geklebt werden, angeordnet. Alternativ dazu ist es ebenfalls möglich, ein breites, doppelseitig klebendes Klebeband zunächst aufzutragen und anschließend die Bahn 5 mittels der Perforiereinrichtung 10 durch das breite Klebeband hindurch zu schwächen.A perforating device 10 and two adhesive tape dispensers 11, 12 are arranged on the inlet side, just before the web 5 touches the support roller 1. The perforating device 10 consists of a toothed knife which extends over the working width and which can be moved into the groove of a counter-holder 13 arranged on the other side of the web. The counter-holder 13 has, in addition to the groove, support surfaces for the web 5, so that it cannot deflect when perforating and applying the double-sided adhesive tapes. In the present exemplary embodiment, adhesive tape dispensers 11, 12 for narrow adhesive tapes which are glued across the web 5 are arranged on both sides of the perforating device 10. Alternatively, it is also possible to first apply a wide, double-sided adhesive tape and then to weaken the web 5 through the wide adhesive tape by means of the perforating device 10.

Nach einer anderen Ausführungsform (- in Fig. 1 gestrichelt gezeichnet -) sind quer über die Arbeitsbreite eine Vielzahl von Klebebandspendern 11.1 angeordnet, die ihre Klebebänder in Bahnlaufrichtung abgeben. Dies hat den Vorteil, daß das Anbringen der Klebebänder mittels der bewegten Bahn erfolgen kann. Die Stillstandszeit der Wickelmaschine läßt sich so weiter verkürzen, falls der Klebebandauftrag beim Wiederanfahren der Maschine nach dem Perforieren durchgeführt wird.According to another embodiment (shown in dashed lines in FIG. 1), a large number of adhesive tape dispensers 11.1 are arranged across the working width and release their adhesive tapes in the direction of web travel. This has the advantage that the adhesive tapes can be attached by means of the moving web. The downtime of the winding machine can be further reduced if the tape is applied when the machine is restarted after perforating.

Zum Ausstoßen der vollen Wickelrollen 4 dient ein um die Tragwalze 1 schwenkbare Ausstoßrolle 14, die an seitlichen, um die Achse der Tragwalze 1 schwenkbaren Schwenkarmen 14.1 frei drehbar gelagert ist. Konstruktiv vorteilhaft läßt sich der Gegenhalter 13 unten an den Schwenkarmen 14.1 befestigen, so daß er durch Abschwenken der Ausstoßrolle 14 gegen die Bahn 5 bewegt werden kann. Auf bekannte Weise ist an den Schwenkarmen 14.1 im Bereich zwischen Ausstoßrolle 14 und Tragwalze 1 eine Hülseneinlegeeinrichtung 15 befestigt, z. B. eine Hülsenzange oder eine Hülsenrinne, mit der ein Satz neuer Hülsen 16 in das Walzenbett 3 eingelegt werden kann. Alternativ kann die Hülseneinlegeeinrichtung 17 auch auf bekannte Weise getrennt von der Ausstoßrolle 14 an um die Tragwalze 2 schwenkbaren Schwenkarmen 17.1 befestigt sein, um einen Satz neuer Hülsen 16 über die Tragwalze 2 in das Walzenbett 3 einzulegen. Ebenso ist es möglich, eine Wickelmaschine mit beiden Hülseneinlegeeinrichtungen 15, 17 zu versehen. Dann dient die um die Tragwalze 1 schwenkende Einrichtung 15 zum Einlegen von Hülsen mit kleinem Durchmesser, die Einrichtung 17 zum Einlegen von Hülsen mit großem Durchmesser.For ejecting the full winding rolls 4 is used a pivoting about the support roller 1 ejection roller 14, which is freely rotatably mounted on side, pivotable about the axis of the support roller 1 pivot arms 14.1. Advantageously, the counter-holder 13 can be attached to the bottom of the swivel arms 14.1, so that it can be moved against the web 5 by pivoting the ejection roller 14. In a known manner, a sleeve insertion device 15 is attached to the swivel arms 14.1 in the area between the ejection roller 14 and the support roller 1, for. B. a sleeve pliers or a sleeve trough, with which a set of new sleeves 16 can be inserted into the roller bed 3. Alternatively, the sleeve insertion device 17 can also be fastened in a known manner separately from the ejection roller 14 to swivel arms 17.1 which can be pivoted about the support roller 2, in order to insert a set of new sleeves 16 into the roller bed 3 via the support roller 2. It is also possible to provide a winding machine with both core insertion devices 15, 17. Then the device 15 pivoting about the support roller 1 is used for inserting sleeves with a small diameter, the device 17 for inserting sleeves with a large diameter.

Beim Aufwickeln von schweren Papiersorten wird der Rollenwechsel wie folgt durchgeführt:
Wenn die Wickelrolle 4 eine vorgegebene Bahnlänge oder einen vorgegebenen Durchmesser erreicht hat, wird die Tragwalzen-Wickelmaschine angehalten; d.h. die Antriebe der Tragwalzen 1, 2 werden abgebremst. Die Bahn 5 kommt durch die Bremskraft, die von der nicht dargestellten Abrolleinrichtung aufgebracht wird, unter Bahnzug zum Stehen. Im Bereich vor der umschlungenen Tragwalze 1 werden nun quer über die Breite der Bahn 5 zwei nebeneinanderliegende doppelseitig klebende Klebebänder von den Klebebandspendern 11, 12 aufgebracht. Gleichzeitig oder direkt anschließend wird die Materialbahn 5 mit der Perforiereinrichtung 10 über ihre gesamte Breite geschwächt. Der Grad der Schwächung wird in Abhängigkeit von der Materialsorte eingestellt, so daß die benötigte Kraft zum Trennen der Bahn 5 unabhängig von der Materialsorte immer annähernd gleich groß ist. Anschließend wird die Maschine wieder gestartet, bis die geschwächte Bahnstelle mit den beiden Klebstreifen 18, 19 sich im Walzenbett 3, jedoch noch unterhalb der Berührungslinie der noch einzulegenden neuen Hülsen 16 an der Tragwalze 1 befindet. Dort wird die Bahn 5 wieder abgestoppt und die Bremse an der Abrollvorrichtung wird arretiert, so daß die Bahn 5 mit maximaler Kraft zurückgehalten wird. Gleichfalls wird die Stütze 6 hochgefahren, so daß die Rollen 8 die Bahn 5 mit kurzem Abstand unterhalb der geschwächten Stelle auf der Tragwalze 1 festklemmen. Bei dieser Verfahrensweise wird das Trennmesser 7 nicht benutzt, daher auch nicht in Richtung zur Tragwalze 1 geklappt. Falls erforderlich, kann das Halten der Bahn 5 auf der Tragwalze 1 durch Beaufschlagen mit Unterdruck unterstützt werden.When winding heavy paper types, the roll change is carried out as follows:
When the winding roll 4 has reached a predetermined web length or a predetermined diameter, the carrier roller winding machine is stopped; ie the drives of the support rollers 1, 2 are braked. The web 5 comes under the braking force that is applied by the unrolling device, not shown Train to stand. In the area in front of the wrapped support roller 1, two adjacent double-sided adhesive tapes are now applied by the adhesive tape dispensers 11, 12 across the width of the web 5. Simultaneously or immediately thereafter, the material web 5 is weakened with the perforating device 10 over its entire width. The degree of weakening is set depending on the type of material, so that the force required to separate the web 5 is always approximately the same regardless of the type of material. The machine is then started again until the weakened web site with the two adhesive strips 18, 19 is in the roller bed 3, but still below the line of contact of the new sleeves 16 still to be inserted on the support roller 1. There the web 5 is stopped again and the brake on the unwinding device is locked so that the web 5 is retained with maximum force. Likewise, the support 6 is raised so that the rollers 8 clamp the web 5 at a short distance below the weakened point on the support roller 1. In this procedure, the separating knife 7 is not used, and is therefore not folded in the direction of the supporting roller 1. If necessary, the holding of the web 5 on the support roller 1 can be supported by applying a vacuum.

Anschließend wird die volle Wickelrolle 4 mit der Ausstoßrolle 14 etwas angehoben und die Tragwalze 2 in Richtung des Pfeils 20 gegen den Uhrzeigersinn angetrieben. Sie dreht die Rolle 4 somit im Uhrzeigersinn (Pfeil 21), es wird so auf die geschwächte Bahnstelle ein Zug ausgeübt, der zum Durchtrennen der Bahn 5 an dieser Stelle führt. Die Wickelrolle 4 wird solange gedreht, bis das sich am Bahnende befindliche Klebeband 18 durch den Spalt zwischen der Ausstoßrolle 14 und der Wickelrolle 4 gezwängt wurde, so daß das Ende der Bahn 5 fest mit der Wickelrolle 4 verbunden ist. Anschließend wird die Ausstoßrolle 14 weiter in Richtung zur Tragwalze 2 geschwenkt und so die volle Wickelrolle 4 aus dem Walzenbett 3 ausgestoßen. Entweder gleichzeitig - mittels der Hülseneinlegevorrichtung 15 - oder anschließend - mittels der Hülseneinlegevorrichtung 17 - wird ein Satz neuer Hülsen 16 in das Walzenbett 3 eingelegt. Nach dem Auflegen der Druckwalze 22 werden die Tragwalzen 1, 2 erneut in Bewegung gesetzt, um den neugeschaffenen Bahnanfang mit dem Klebestreifen 19 in Kontakt mit den Hülsen 16 zu bringen. Nachdem der Bahnanfang mit dem Klebeband 19 den Spalt zwischen den Hülsen 16 und der Tragwalze 1 durchlaufen hat und so eine haltbare Klebeverbindung der Bahn 5 mit den Hülsen 16 hergestellt wurde, wird die Stütze 6 mit der Rolle 8 in eine nicht störende Position abgesenkt und die Tragwalzen-Wickelmaschine kann auf volle Wickelgeschwindigkeit beschleunigt werden.
Es ist auch möglich, vor dem Ausstoßen der vollen Rolle 4 ohne Anheben der Wickelrolle 4 zum Durchtrennen der Bahn beide Tragwalzen 1, 2 anzutreiben. Die Klebeverbindung des Endes der Bahn 5 mit der Wickelrolle 4 wird dann beim Durchlauf des Klebebandes 18 durch den Spalt zwischen der Tragwalze 1 und der Wickelrolle 4 erzeugt. Diese Verfahrensweise hat jedoch den Nachteil, daß sich die Tragwalze 1 unter der von den Rollen 8 festgeklemmten Bahn 5 durchdrehen muß und ein Zeitverlust durch ein zusätzliches Starten der Maschine auftritt.Then the full winding roll 4 is raised slightly with the ejection roll 14 and the support roller 2 is driven in the direction of arrow 20 counterclockwise. It thus rotates the roller 4 in a clockwise direction (arrow 21), so that a tension is exerted on the weakened web site, which leads to the web 5 being severed at this location. The winding roller 4 is rotated until the adhesive tape 18 located at the end of the web has been forced through the gap between the ejection roller 14 and the winding roller 4, so that the end of the web 5 is firmly connected to the winding roller 4. The ejection roller 14 is then pivoted further in the direction of the support roller 2 and the full winding roller 4 is ejected from the roller bed 3. Either simultaneously - by means of the sleeve insertion device 15 - or subsequently - by means of the sleeve insertion device 17 - a set of new sleeves 16 is inserted into the Roll bed 3 inserted. After placing the pressure roller 22, the support rollers 1, 2 are set in motion again in order to bring the newly created beginning of the web into contact with the sleeves 16 with the adhesive strip 19. After the beginning of the web with the adhesive tape 19 has passed through the gap between the sleeves 16 and the support roller 1 and a durable adhesive connection of the web 5 to the sleeves 16 has been produced, the support 6 with the roller 8 is lowered into a non-disturbing position and the Carrier roll winding machine can be accelerated to full winding speed.
It is also possible to drive both support rollers 1, 2 before the full roller 4 is ejected without lifting the winding roller 4 in order to sever the web. The adhesive connection of the end of the web 5 to the winding roll 4 is then produced when the adhesive tape 18 passes through the gap between the support roller 1 and the winding roll 4. However, this procedure has the disadvantage that the support roller 1 has to turn under the web 5 clamped by the rollers 8 and there is a loss of time due to an additional starting of the machine.

Beim Aufwickeln von leichten Papiersorten wird ein Rollenwechsel entsprechend, jedoch mit folgenden Änderungen durchgeführt:
Da bei leichten Papiersorten eine Schwächung der Bahn 5 nicht erforderlich ist, bleibt die Perforiereinrichtung 10 inaktiv. Falls das Bahnende an der vollen Wickelrolle 4 angeklebt werden soll, kann mit den Klebebandspendern 11 oder 12 ein Klebeband 18.1 angebracht werden. Dies erfolgt vorteilhafterweise während des Auslaufens der Maschine, während sie für den Trennvorgang abgestoppt wird. Der Bremsvorgang ist so gesteuert, daß sich nach dem Anhalten das Klebeband 18.1 im Walzenbett 3 oberhalb der Arbeitsposition 7.1 des Trennmessers 7 befindet. Zum Durchtrennen der Bahn wird die Stütze 6 soweit durch den Spalt zwischen den beiden Tragwalzen 1, 2 hochgefahren, daß sich nach dem Trennen ein ausreichend langer Bahnanfang im Tragwalzenbett 3 befindet, um den Satz neuer Hülsen 16 problemlos anzuwickeln. Die Stütze 6 wird dabei soweit hochgefahren, daß die Rollen 8 die Tragwalze 1 nicht mehr berühren. Die Bahn 5 wird ausschließlich von dem Unterdruck in der Tragwalze 1 auf deren Oberfläche gehalten. Zum Trennen der Bahn schwenkt das Messer 7 in Richtung zur Tragwalze 1, wobei um Beschädigungen zu vermeiden, ein geringer Abstand eingehalten wird. Das Durchtrennen der Bahn 5 erfolgt durch Ausstoßen der vollen Wickelrolle 4 über die Tragwalze 2 mittels der Ausstoßrolle 14, dabei wirkt das Trennmesser 7 als passive Abreißkante.
Nach dem Ausstoßen der vollen Wickelrolle 4 wird die Stütze 6 mit dem Trennmesser 7 wieder abgesenkt und ein Satz neuer Hülsen 16 eingelegt. An den Hülsen 16 sind auf bekannte Weise Klebebänder oder Leimspuren angebracht, um den neugeschaffenen Bahnanfang an ihnen zu befestigen. Das Anwickeln des Bahnanfangs an den Hülsen 16 erfolgt nach Aufsetzen der Druckwalze 22 automatisch beim Wiederanfahren der Tragwalzenmaschine durch Drehung der beiden Tragwalzen 1, 2.When winding light paper types, a roll change is carried out accordingly, but with the following changes:
Since a weakening of the web 5 is not required for light paper types, the perforating device 10 remains inactive. If the end of the web is to be glued to the full winding roll 4, an adhesive tape 18.1 can be attached with the tape dispensers 11 or 12. This advantageously takes place while the machine is running down while it is being stopped for the separation process. The braking process is controlled so that the adhesive tape 18.1 is in the roller bed 3 above the working position 7.1 of the separating knife 7 after stopping. To cut the web, the support 6 is raised so far through the gap between the two support rollers 1, 2 that after the separation there is a sufficiently long start of the web in the support roller bed 3 to easily wind the set of new sleeves 16. The support 6 is raised so far that the rollers 8 do not support the roller 1 touch more. The web 5 is held exclusively by the negative pressure in the support roller 1 on its surface. To separate the web, the knife 7 pivots in the direction of the support roller 1, a small distance being maintained in order to avoid damage. The web 5 is severed by ejecting the full winding roll 4 via the support roller 2 by means of the ejection roll 14, the separating knife 7 acting as a passive tear-off edge.
After the full winding roll 4 has been ejected, the support 6 is lowered again with the separating knife 7 and a set of new sleeves 16 is inserted. Adhesive tapes or traces of glue are attached to the sleeves 16 in a known manner in order to fasten the newly created path start to them. The winding of the start of the web on the sleeves 16 takes place automatically after the pressure roller 22 has been put on when the carrier roller machine is restarted by rotating the two carrier rollers 1, 2.

Claims (5)

Verfahren zum automatischen Wechseln einer vollen Wickelrolle (4) gegen eine neue Wickelhülse (16) bei Tragwalzen-Wickelmaschine mit zwei angetriebenen Tragwalzen (1, 2) für Materialbahnen (5), bei dem - die Materialbahn (5) im Bereich vor der Tragwalze (1) geschwächt und beiderseits der Schwächung ein Klebemittel aufgetragen wird, - die Materialbahn (5) auf der Tragwalze (1) durch Erhöhung des Bahnzugs durchgetrennt und - anschließend das Bahnende an die volle Wickelrolle (4) und der neue Bahnanfang nach Einlegen einer neuen Wickelhülse (16) an diese angeklebt wird, dadurch gekennzeichnet, daß die Bahn (5) von einer Tragwalze (1) umgelenkt von unten durch den Tragwalzenspalt in das Walzenbett (3) geführt ist und der Rollenwechsel mit folgenden Schritten durchgeführt wird: - Zum Schwächen wird die Bahn (5) angehalten, - anschließend wird die geschwächte Stelle in das Walzenbett (3) bewegt und dort unterhalb der Berührungslinie der leeren Wickelhülse (16) an der Tragwalze (1) angehalten, - der neuzuschaffende Bahnanfang wird an der umschlungenen Tragwalze (1) festgehalten, - anschließend wird durch Drehen der vollen Wickelrolle (4) mittels der nichtumschlungenen Tragwalze (2) gegen eine Bremskraft die Bahn (5) durchgetrennt und das Bahnende an der vollen Rolle (4) festgeklebt, - danach die volle Wickelrolle (4) aus dem Wickelbett (3) entfernt, und - nach Einlegen einer neuen Wickelhülse (16) diese durch Drehen der beiden Tragwalzen (1, 2) mit dem neuen Bahnanfang verklebt wird. Method for automatically changing a full winding roll (4) against a new winding tube (16) in a support roller winding machine with two driven support rollers (1, 2) for material webs (5), in which - The material web (5) in the area in front of the support roller (1) is weakened and an adhesive is applied to both sides of the weakening, - The material web (5) on the support roller (1) is cut by increasing the web tension and - the end of the web is then glued to the full winding roll (4) and the new beginning of the web is inserted after inserting a new winding tube (16), characterized in that the web (5) deflected by a support roller (1) is guided from below through the support roller gap into the roller bed (3) and the roll change is carried out with the following steps: - To weaken the web (5) is stopped, - The weakened point is then moved into the roller bed (3) and stopped there below the line of contact of the empty winding tube (16) on the support roller (1), - The new beginning of the web is held on the wrapped support roller (1), - The web (5) is then cut through by turning the full winding roll (4) by means of the non-looped support roller (2) against a braking force and the end of the web is glued to the full roll (4), - Then removed the full winding roll (4) from the winding bed (3), and - After inserting a new winding tube (16) this is glued to the new web start by turning the two support rollers (1, 2). Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß vor dem Durchtrennen der Bahn (5) die volle Wickelrolle (4) mittels einer Ausstoßrolle (14) von der umschlungenen Tragwalze (1) angehoben und nach Durchlauf des Bahnendes durch den Spalt zwischen Wickelrolle (4) und Ausstoßrolle (14) von dieser über die nichtumschlungene Tragwalze (2) aus dem Wickelbett ausgestoßen wird.A method according to claim 1, characterized in that before the web (5) is severed, the full winding roll (4) is raised from the wrapped support roller (1) by means of an ejection roller (14) and after the web end has passed through the gap between the winding roll (4) and ejection roller (14) is ejected from the winding bed via the non-looped support roller (2). Tragwalzen-Wickelmaschine zur Durchführung eines Verfahrens nach Anspruch 1 oder 2, gekennzeichnet durch - zwei angetriebene Tragwalzen (1, 2), zwischen denen ein Walzenbett (3) ausgebildet ist, wobei die Materialbahn (5) von der ersten Tragwalze (1) umgelenkt von unten durch den Spalt zwischen den beiden Tragwalzen (1, 2) geführt wird, - eine Ausstoßvorrichtung (Ausstoßrolle 14) zum Anheben und Ausstoßen der vollen Wickelrollen (4) aus dem Walzenbett (3), - eine Perforiervorrichtung (10), die vor der ersten Tragwalze (1) angeordnet ist, und eine Einrichtung zum Auftragen eines Klebemittels (Klebebandspender 11, 12), - eine Einrichtung zum Festklemmen der Bahn (Rollen 8) auf der Tragwalze (1) im umschlungenen Bereich, und - eine Einrichtung (15 bzw. 17) zum Einlegen neuer Hülsen (16) in das Walzenbett (3). Carrier roll winding machine for carrying out a method according to claim 1 or 2, characterized by - Two driven support rollers (1, 2), between which a roller bed (3) is formed, the material web (5) being deflected by the first support roller (1) from below through the gap between the two support rollers (1, 2) , an ejection device (ejection roller 14) for lifting and ejecting the full winding rollers (4) from the roller bed (3), a perforating device (10), which is arranged in front of the first support roller (1), and a device for applying an adhesive (adhesive tape dispenser 11, 12), - A device for clamping the web (rollers 8) on the support roller (1) in the wrapped area, and - A device (15 and 17) for inserting new sleeves (16) in the roller bed (3). Tragwalzen-Wickelmaschine nach Anspruch 3, gekennzeichnet durch an einer Stütze (6) federnd und frei drehbar gelagerte Rollen (8) als Klemmeinrichtung, die durch den Spalt zwischen den Tragwalzen (1, 2) in den Bereich des Walzenbetts (3) hochbewegbar sind.Carrier roller winding machine according to Claim 3, characterized by rollers (8) mounted on a support (6) in a resilient and freely rotatable manner as a clamping device, which can be moved up into the region of the roller bed (3) through the gap between the carrier rollers (1, 2). Tragwalzen-Wickelmaschine nach Anspruch 4, dadurch gekennzeichnet, daß die umschlungene Tragwalze (1) als Saugwalze ausgebildet ist und daß an der Stütze (6) oberhalb der Rollen (8) ein in Richtung zur Tragwalze (1) klappbares Trennmesser (7) angelenkt ist, das als Abreißkante für die Materialbahn (5) dient.Carrier roller winding machine according to claim 4, characterized in that the looped carrier roller (1) is designed as a suction roller and that a separating knife (7) which is foldable in the direction of the carrier roller (1) is articulated on the support (6) above the rollers (8) , which serves as a tear-off edge for the material web (5).
EP90119865A 1990-02-07 1990-10-17 Method and device for automatically replacing a full roll by a new winding core Expired - Lifetime EP0442038B1 (en)

Applications Claiming Priority (2)

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DE4003504A DE4003504A1 (en) 1990-02-07 1990-02-07 Machine for winding continuous strip of material into roll - has extractor to remove full rolls and insert new roll core
DE4003504 1990-02-07

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EP0442038A2 true EP0442038A2 (en) 1991-08-21
EP0442038A3 EP0442038A3 (en) 1992-03-18
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EP (1) EP0442038B1 (en)
JP (1) JP3053878B2 (en)
AT (1) ATE128943T1 (en)
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CA (1) CA2033615C (en)
DE (2) DE4003504A1 (en)
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WO1992006912A1 (en) * 1990-10-15 1992-04-30 Beloit Corporation Method for effecting a set change in a winder
EP0585092A1 (en) * 1992-08-26 1994-03-02 Ykk Corporation Automatic winding machine for tape-like articles
US5419511A (en) * 1992-08-26 1995-05-30 Yoshida Kogyo K.K. Automatic winding machine for tape-like articles
EP0733569A2 (en) * 1995-03-23 1996-09-25 Maschinenfabrik GOEBEL GmbH Winding device with housing
EP0733569A3 (en) * 1995-03-23 1997-05-21 Goebel Gmbh Maschf Winding device with housing
US6230998B1 (en) 1998-02-05 2001-05-15 Voith Sulzer Papiertechnik Patent Gmbh Method for transferring a web of material from a wound roll onto a winding tube, and winding apparatus
DE19804411A1 (en) * 1998-02-05 1999-08-19 Voith Sulzer Papiertech Patent Method for transferring a material web from a winding roll to a winding tube and winding device
EP0934895A3 (en) * 1998-02-05 2000-02-09 Voith Sulzer Papiertechnik Patent GmbH Method of guiding a material web from a winding roll to a winding core and winding device
EP0934895A2 (en) * 1998-02-05 1999-08-11 Voith Sulzer Papiertechnik Patent GmbH Method of guiding a material web from a winding roll to a winding core and winding device
DE19808041A1 (en) * 1998-02-26 1999-09-09 Voith Sulzer Papiertech Patent Method for transferring web of material, e.g. paper, from reel to roll core using double sided adhesive tape
EP0945380A1 (en) * 1998-02-26 1999-09-29 Voith Sulzer Papiertechnik Patent GmbH Method for transferring a material web from a winding roll to a core and winding unit
US6086010A (en) * 1998-02-26 2000-07-11 Voith Sulzer Papiertechnik Patent Gmbh Process for transferring a material web from a winding roll to a winding sleeve and winding device
US6199476B1 (en) 1998-04-06 2001-03-13 Voith Sulzer Papiertechnik Patent Gmbh Roll machine and process for operating the same
EP1652803A2 (en) 2004-10-29 2006-05-03 Voith Paper Patent GmbH Winding machine
EP1652803A3 (en) * 2004-10-29 2007-11-07 Voith Patent GmbH Winding machine
WO2015024682A1 (en) * 2013-08-23 2015-02-26 Voith Patent Gmbh Winding device for fiber webs
DE202014003408U1 (en) 2013-09-03 2014-07-03 Raumaster Paper Oy Apparatus for applying adhesive to the roll and sleeve

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ES2081892T3 (en) 1996-03-16
FI103878B (en) 1999-10-15
CA2033615C (en) 2000-10-10
JP3053878B2 (en) 2000-06-19
ATE128943T1 (en) 1995-10-15
FI910574A (en) 1991-08-08
CA2033615A1 (en) 1991-08-08
EP0442038B1 (en) 1995-10-11
DE59009768D1 (en) 1995-11-16
FI910574A0 (en) 1991-02-06
US5222679A (en) 1993-06-29
FI103878B1 (en) 1999-10-15
EP0442038A3 (en) 1992-03-18
JPH04213540A (en) 1992-08-04
BR9100273A (en) 1991-10-22
DE4003504A1 (en) 1991-08-08

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