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EP0500841B1 - Process and device for changing winding rollers - Google Patents

Process and device for changing winding rollers Download PDF

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Publication number
EP0500841B1
EP0500841B1 EP91914816A EP91914816A EP0500841B1 EP 0500841 B1 EP0500841 B1 EP 0500841B1 EP 91914816 A EP91914816 A EP 91914816A EP 91914816 A EP91914816 A EP 91914816A EP 0500841 B1 EP0500841 B1 EP 0500841B1
Authority
EP
European Patent Office
Prior art keywords
web
roll
adhesive strips
transfer element
adhesive
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
EP91914816A
Other languages
German (de)
French (fr)
Other versions
EP0500841A1 (en
Inventor
Michael KÜHNHOLD
Wolfgang Fischer
Hartmut Dropczynski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Paper Jagenberg GmbH
Original Assignee
Jagenberg Papiertechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jagenberg Papiertechnik GmbH filed Critical Jagenberg Papiertechnik GmbH
Publication of EP0500841A1 publication Critical patent/EP0500841A1/en
Application granted granted Critical
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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
    • B65H19/29—Securing the trailing end of the wound web to the web roll
    • 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

Definitions

  • the invention relates to a method for changing winding rolls in machines for winding material webs, in particular paper or cardboard webs on cores, and a device for carrying out the method.
  • DE 36 11 895-A1 describes a generic method in a back-up roll winding machine in which the web is first weakened before reaching the back-up roll, a trace of adhesive is applied to both sides of the weakening and the web is separated by braking on the back-up roll.
  • the web ends held by vacuum on the support roller are moved to the full winding rolls and glued to them.
  • the newly created beginnings remain with this Movement braked until the brake is released after unloading the finished rolls and inserting new winding cores, thus transporting the beginning of the web provided with adhesive tape from the support roller to the winding cores and adhering to them.
  • EP-A-0 442 038 (state of the art under Article 54 (3) EPC) describes a carrier roller winding machine in which a perforating device and a plurality of adhesive tape dispensers are arranged across the working width on the inlet side and for applying double-sided adhesive tapes are who release their tapes in the direction of web travel.
  • the adhesive tapes can thus be attached by means of the moving web.
  • US-A-2 745 464 discloses a splicer, that is to say a device for connecting two webs, using only a single-sided adhesive tape. Two rollers form a press nip in which the running web is glued to the new web.
  • the invention has for its object to improve a generic method so that only one adhesive dispenser is required to apply the adhesive strips, without the downtimes of the machine being extended.
  • only one adhesive dispenser is required, which first applies the adhesive strips to the transfer element. This can happen during winding the material web, so that the downtimes are not extended. If the roll change takes place at shorter intervals than is required for applying the adhesive strips to the transfer element, two adhesive dispensers are sufficient, which apply adhesive strips to the transfer element from both sides simultaneously over the working width.
  • a free-running transfer roller in contact with the moving web according to claim 2 enables the adhesive strips to be attached by means of the moving web.
  • Claim 3 contains an advantageous variant for changing roles with heavier types of paper, for. B. carton.
  • the web is first weakened and adhesive strips are applied to both sides of the weakening line.
  • the weakening line can then be moved into the position that is desired for gluing the new beginning of the web to new sleeves. After cutting the web, both the end of the web - for gluing to the full winding roll - and the newly created web beginning - for gluing to the new winding cores - have adhesive strips.
  • Claim 4 contains a particularly advantageous variant of the method according to claim 3 for changing full winding rolls against new winding cores in support roller winding machines with two driven support rollers, on which the winding rollers rest during winding.
  • Claims 5 to 10 contain preferred devices for carrying out a method according to Claims 1 to 4.
  • FIG. 1 and 2 show a side view of an adhesive application device according to the invention which, when used on a winding machine, applies a plurality of adhesive strips running in the direction of travel of the web next to one another at a distance.
  • FIG. 3 shows an adhesive application device which applies a wide strip of adhesive transversely to the web running direction.
  • FIG. 4 shows a paper web with parallel adhesive strips applied in the direction of web travel.
  • Fig. 5 shows a paper web with a wide strip of adhesive transverse to the direction of travel.
  • FIG. 6 shows an adhesive application device with which one or more traces of glue are applied.
  • the carrier roller winding machine which is only shown in part in the drawing, has two driven carrier rollers 1, 2, on which the winding rollers 3 rest during the winding.
  • the material web 4 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, through the gap between the support rollers 1, 2 into the roller bed 5 and wound onto aligned sleeves.
  • Such double carrier roll winding machines are widely known and z. B. in DE-OS 32 07 461, so that details, insofar as they do not relate to the invention, are not discussed.
  • levers 6 are attached which can pivot about the support roller axis and carry a swivel cross member 7 which extends across the working width.
  • a freely rotatable ejection roller 8 for ejecting the full winding rollers 3 over the support roller 2 is attached to the top of the swivel cross member 7.
  • the swivel cross member 7 On its underside, the swivel cross member 7 carries a counter-holder 9, which extends over the working width, to a perforating device 10, which has two support surfaces 11, 12, between which there is a groove. By pivoting the swivel traverse 7, the support surfaces 11, 12 - as shown in FIG. 2 - can be moved against the web 4.
  • the perforating device 10 has a toothed knife 14 which extends over the working width and which is removed from the web 4 by means of a lifting unit 15 and, as shown in FIG. 2, for perforating the web 4 into the groove of the lowered one Bracket 9 can be pressed.
  • a lifting unit 15 for perforating the web 4 into the groove of the lowered one Bracket 9 can be pressed.
  • two clamping elements 17, 18, which are resiliently mounted on the knife holder 16 laterally next to the knife 14 and can be pressed against the support surfaces 11, 12 of the counter holder 9.
  • a device 19 for applying an adhesive is arranged below the support roller 1. It has a transfer roller 21 which extends over the working width and is rotatably mounted on swivel arms 20 by means of a drive and can be moved from below against the web 4 in the wrap region of the support roller 1.
  • the surface of the transfer roller 21 is such that the adhesive adheres to it less firmly than to the material web 4, i. H. it has a lower adhesion than the material web 4.
  • an adhesive tape dispenser 22 is arranged below the transfer roller 21 and is mounted on guides 23 transversely across the working width - that is to say it can be moved parallel to the support roller axis.
  • the adhesive tape 24 is guided in the direction of travel of the web 4.
  • a supply roll 26 made of an adhesive tape 24 with a double-sided adhesive layer of adhesive adhering to a carrier tape 27 is freely rotatably mounted in the carriage 25 which can be moved transversely to the web.
  • the adhesive tapes used in the paper industry are used, the adhesive layer of which is very easily detached from the carrier tape 27.
  • the adhesive tape 24 is guided upwards on the carriage 25 and guided against the direction of travel of the web 4 up to an adhesive tape-wide pressure roller 28, which deflects it downward to a driven spool 29 for the carrier tape 27.
  • the pressure roller 28 can be swiveled up against the transfer roller 21 in its lowered position by means of a piston-cylinder unit 30.
  • Fig. 1 shows the support roller winding machine during winding: the perforating device 10 and its counter-holder 9 are at a non-disturbing distance from the web 4.
  • the transfer roller 21 is lowered so that it is also at a distance from the web 4.
  • a plurality of parallel adhesive strips 31 are applied to the surface along the direction of travel of the web 4.
  • the pressure roller 28 wrapped in the adhesive tape 24 pivots against the transfer roller 21 from below.
  • the adhesive tape 24 is unwound from the supply roller 26 and an adhesive strip 31 is picked up by the transfer roller 21.
  • the remaining carrier tape 27 is wound up by the spool 29.
  • the pressure roller 28 is pivoted, whereby the adhesive layer of the Adhesive tape 24 tears off.
  • the carriage 25 then travels transversely to the web running direction into the next adhesive tape delivery position.
  • the transfer roller 21 is rotated back into the take-up position so that the taken-up adhesive strips 31 lie in alignment.
  • the next adhesive strip 31 is now transferred to the transfer roller 21.
  • a number of parallel adhesive strips 31 which are aligned transversely to the running direction of the web 4 are applied to the transfer roller 20, preferably this is done approximately every 200 mm. It is also possible to adjust the positions of the adhesive strip 31 as a function of the longitudinal knife positions so that the adhesive strips 31 are evenly distributed on the individual webs.
  • the carrier roller winding machine When the winding roll 3 has reached a predetermined web length or a predetermined diameter, the carrier roller winding machine is stopped.
  • the web 4 comes to a standstill under web tension due to the braking force that is applied by a rolling device, not shown.
  • the swivel cross member 7 is moved downward, so that the support surfaces 11, 12 of the counter-holder 9 bear against the web 4, and the web 4 is weakened by perforation.
  • the cutting knife 14 moves upwards and with its tips through the web 4 into the groove between the support surfaces 11, 12.
  • the transfer roller 21 swivels - as shown in FIG.
  • the transfer roller 21 is rotated so that the circumferential distance between the contact line 32 to the web 4 and the center of the adhesive strips 31 corresponds approximately to the distance between the contact line 32 to the separating knife 14.
  • the separating knife 14 is then lowered with the clamping elements 17, 18 and the transfer roller 21 is switched to freewheeling.
  • the support roller 1 is then again with reduced web tension started, with the adjacent transfer roller 21 also rotating.
  • the adhesive strips 31 are pressed on the contact line 32 under pressure against the web 4, whereby they detach from the transfer roller 21 and stick to the web 4, since the adhesion to the web 4 is greater than to the transfer roller 21.
  • the perforation line 33 of the web 4 has meanwhile also advanced to the contact line 32, so the adhesive strips 31 are located on both sides of the perforation line 33 on the web 4 (FIG. 4).
  • the transfer roller 21 is lowered again and can again take up adhesive strips in this position for the next roll change.
  • the web 4 is moved further until the weakened web site (perforation line 33) with the adhesive strips 31 is in the roller bed 5 above the gap between the two support rollers 1, 2.
  • the web 4 is stopped there and the brake on the unwinding device is locked in order to hold back with maximum force.
  • the winding roller 3 with the ejection roller 9 is raised a little by the wrapped roller 1 and rotated by means of the roller 2.
  • the web 4 now tears through the perforation line 33, so that there are adhesive strips 31 both at the end of the web that is running and at the beginning of the new web.
  • the newly created beginning of the web is held on the support roller 1, this can e.g. B. by suction by means of vacuum or by means of mechanical holding elements.
  • the full winding roll 3 is rotated further until the web end provided with adhesive strips 31 has been moved through the contact line to the support roller 1 or to the ejection roller 8, so as to glue the web end to the full winding roll 3.
  • the full winding roll 3 with the ejection roll 8 is ejected via the support roller 2 and a new set of tubes is inserted into the roller bed 5.
  • the support rollers 1, 2 are set in motion again in order to bring the new beginning of the web provided with adhesive strips 31 into contact with the sleeves bring.
  • a durable adhesive connection of the web 4 with the sleeves is established when the beginning of the web with the adhesive strips 31 has passed through the gap between the sleeves and the support roller 1.
  • the carrier roller winding machine can then be accelerated to the maximum winding speed.
  • a wide, double-sided adhesive strip 34 is applied transversely to the running direction of the web 4, that is to say axially parallel to the transfer roller 21 (FIG. 5).
  • the carriage 25 of the adhesive tape dispenser 22 is mounted such that it can be moved across the working width, the axes of the pressure roller 28 and the supply roller 26 extending perpendicular to the axis of the transfer roller 21.
  • the pressure roller 28 is concavely curved in the axial direction on its circumference. This can e.g. B. can be achieved by using so-called diabolo rolls.
  • the pressure roller 28 presses the adhesive tape 24 - as explained in the previous embodiment - against the transfer roller 21 while the carriage is moved over the entire working width. The pressure roller 28 is then lowered, the adhesive layer of the adhesive tape 24 tearing through. So that the adhesive tape is applied to the transfer roller 21 faster, an adhesive tape dispenser 22 can be arranged on each side of the machine, which dispenser then applies the adhesive strips 34 to one half of the transfer roller 21. The adhesive strips 34 are transferred to the web 4 in the manner described above by pressing the transfer roller 21 onto the web 4.
  • FIG. 6 A further embodiment is described in FIG. 6, in which the double-sided adhesive strips of adhesive are produced on the transfer roller 21 by spraying.
  • one or more glue nozzles 35 are located below the transfer roller 21, either over the entire web width arranged or traversable across the track.
  • the nozzles 35 By means of the nozzles 35 one or more traces of glue, for. B. sprayed by a dispersion adhesive that set to double-sided adhesive strips. They are then transferred to web 4 in the manner described above.

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  • Replacement Of Web Rolls (AREA)
  • Stringed Musical Instruments (AREA)
  • Detergent Compositions (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)

Abstract

In a device for changing winding rollers (2) in machines for winding material webs (4), especially paper or cardboard webs, on sleeves, it is known to apply double-sided adhesive strips (31, 34) to the web (4) in order to secure the start of the web to a new sleeve and/or the end of the web to a full winding roller (3). According to the invention, the adhesive strips (31, 34) are first applied to a transfer device (transfer roller 21) displaceable against the web (4) with a weaker adhesive force than on the material web (4), and then the transfer device (transfer roller 21) is moved against the web (4) and the adhesive strips (31, 34) are transferred thereto.

Description

Die Erfindung betrifft ein verfahren zum Wechseln von Wickelrollen bei Maschinen zum Aufwickeln von Materialbahnen, insbesondere Papier- oder Kartonbahnen auf Hülsen, und eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for changing winding rolls in machines for winding material webs, in particular paper or cardboard webs on cores, and a device for carrying out the method.

Bei Wickelmaschinen zum Aufwickeln von Materialbahnen zu Wickelrollen 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 und/oder das Bahnende sicher an den vollen Wickelrollen befestigt wird.In the case of winding machines for winding material webs into winding rolls, 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 during cutting is securely attached to the new winding tube and / or the web end is securely attached to the full winding rolls.

Stand der TechnikState of the art

Die DE 36 11 895-A1 beschreibt ein gattungsgemäßes Verfahren bei einer Stützwalzen-Wickelmaschine, bei dem die Warenbahn vor Erreichen der Stützwalze zunächst geschwächt, beiderseits der Schwächung je eine Klebemittelspur aufgetragen und die Warenbahn durch Abbremsen auf der Stützwalze getrennt wird. Die durch Unterdruck auf der Stützwalze gehaltenen Bahnenden werden zu den vollen Wickelrollen bewegt und mit diesen verklebt. Die neu geschaffenen Bahnanfänge bleiben bei dieser Bewegung gebremst, bis nach dem Entladen der Fertigrollen und Einlegen von neuen Wickelhülsen die Bremse gelöst und so die mit einem Klebestreifen versehenen Bahnanfänge von der Stützwalze zu den Wickelhülsen transportiert und an diese angeklebt werden.DE 36 11 895-A1 describes a generic method in a back-up roll winding machine in which the web is first weakened before reaching the back-up roll, a trace of adhesive is applied to both sides of the weakening and the web is separated by braking on the back-up roll. The web ends held by vacuum on the support roller are moved to the full winding rolls and glued to them. The newly created beginnings remain with this Movement braked until the brake is released after unloading the finished rolls and inserting new winding cores, thus transporting the beginning of the web provided with adhesive tape from the support roller to the winding cores and adhering to them.

In EP-A-0 442 038 (Stand der Technik under Artikel 54(3) EPÜ) ist eine Tragwalzen-Wickelmaschine beschrieben, bei der an der Einlaufseite eine Perforiereinrichtung und zum Auftragen von doppelseitig klebenden Klebebändern quer über die Arbeitsbreite eine Vielzahl von Klebebandspendern angeordnet sind, die ihre Klebebänder in Bahnlaufrichtung abgeben. Das Anbringen der Klebebänder kann so mittels der bewegten Bahn erfolgen.EP-A-0 442 038 (state of the art under Article 54 (3) EPC) describes a carrier roller winding machine in which a perforating device and a plurality of adhesive tape dispensers are arranged across the working width on the inlet side and for applying double-sided adhesive tapes are who release their tapes in the direction of web travel. The adhesive tapes can thus be attached by means of the moving web.

Bei Papier- oder Kartonbahnen hat es sich nun gezeigt, daß über die Bahnbreite entweder ein durchgehender breiter Klebestreifen oder bei Auftrag in Bahnlaufrichtung etwa alle 200 mm ein Klebestreifen erforderlich ist. Bei großen Bahnbreiten (z.B. 8 m) benötigt der Auftrag eines querverlaufenden Klebestreifens viel Zeit oder es sind - bei Auftrag in Bahnlaufrichtung - eine große Anzahl Klebebandspender erforderlich.In the case of paper or cardboard webs, it has now been found that either a continuous, wide adhesive strip is required across the web width or an adhesive strip is required every 200 mm when applied in the web running direction. In the case of large web widths (e.g. 8 m), the application of a transverse adhesive strip takes a lot of time or - when applying in the direction of web travel - a large number of adhesive tape dispensers are required.

Aus der US-A-2,314,519 ist eine Anordnung zum Auftragen eines flüssigen Klebemittels auf das Bahnende für Wickelmaschinen bekannt, die eine aus einem Klebemittelreservoir schöpfende Walze enthält, die Klebemittel auf eine Reihe von scheibenförmigen Übergabeelementen überträgt. Von den Übergabeelementen wird das Klebemittel streifenförmig auf das Bahnende aufgetragen.From US-A-2,314,519 an arrangement for applying a liquid adhesive to the end of the web for winding machines is known which contains a roller which draws from an adhesive reservoir and transfers the adhesive to a series of disk-shaped transfer elements. The adhesive is applied in strips from the transfer elements to the end of the web.

US-A-2 745 464 offenbart einen Splicer, also eine Vorrichtung zum Verbinden von zwei Bahnen, wobei nur ein einseitigklebendes Klebeband verwendet wird. Zwei Rollen bilden einen Preßspalt, in dem die ablaufende Bahn mit der neuen Bahn verklebt wird.US-A-2 745 464 discloses a splicer, that is to say a device for connecting two webs, using only a single-sided adhesive tape. Two rollers form a press nip in which the running web is glued to the new web.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren so zu verbessern, daß zum Auftragen der Klebemittelstreifen nur ein Klebemittelspender erforderlich ist, ohne daß die Stillstandszeiten der Maschine verlängert werden.The invention has for its object to improve a generic method so that only one adhesive dispenser is required to apply the adhesive strips, without the downtimes of the machine being extended.

Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved with the features of patent claim 1.

Nach der Erfindung ist nur ein Klebemittelspender erforderlich, der die Klebemittelstreifen zunächst auf das Übergabeelement aufträgt. Dies kann während des Aufwickelns der Materialbahn erfolgen, so daß die Stillstandszeiten nicht verlängert werden. Falls der Rollenwechsel in kürzeren Zeitabständen erfolgt als für den Auftrag der Klebemittelstreifen auf das Übergabeelement benötigt wird, reichen zwei Klebemittelspender aus, die von beiden Seiten Klebemittelstreifen gleichzeitig über die Arbeitsbreite auf das Übergabeelement auftragen.According to the invention, only one adhesive dispenser is required, which first applies the adhesive strips to the transfer element. This can happen during winding the material web, so that the downtimes are not extended. If the roll change takes place at shorter intervals than is required for applying the adhesive strips to the transfer element, two adhesive dispensers are sufficient, which apply adhesive strips to the transfer element from both sides simultaneously over the working width.

Die Unteransprüche enthalten bevorzugte, da besonders vorteilhafte Ausgestaltungen der Erfindung:The subclaims contain preferred, since particularly advantageous, embodiments of the invention:

Eine freilaufend an der bewegten Bahn anliegende Übergabewalze nach Anspruch 2 ermöglicht das Anbringen der Klebemittelstreifen mittels der bewegten Bahn.A free-running transfer roller in contact with the moving web according to claim 2 enables the adhesive strips to be attached by means of the moving web.

Patentanspruch 3 enthält eine vorteilhafte Variante zum Rollenwechsel bei schwereren Papiersorten, z. B. Karton. Die Bahn wird zunächst geschwächt und beidseits der Schwächungslinie werden Klebemittelstreifen aufgetragen. Die Schwächungslinie läßt sich anschließend in die Position bewegen, die zum Ankleben der neuen Bahnanfänge an neue Hülsen gewünscht wird. Nach dem Durchtrennen der Bahn weist sowohl das Bahnende - zum Ankleben an der vollen Wickelrolle - als auch der neu geschaffene Bahnanfang - zum Ankleben an den neuen Wickelhülsen - Klebemittelstreifen auf.Claim 3 contains an advantageous variant for changing roles with heavier types of paper, for. B. carton. The web is first weakened and adhesive strips are applied to both sides of the weakening line. The weakening line can then be moved into the position that is desired for gluing the new beginning of the web to new sleeves. After cutting the web, both the end of the web - for gluing to the full winding roll - and the newly created web beginning - for gluing to the new winding cores - have adhesive strips.

Patentanspruch 4 enthält eine besonders vorteilhafte Variante des Verfahrens nach Anspruch 3 zum Wechseln von vollen Wickelrollen gegen neue Wickelhülsen bei Tragwalzen-Wickelmaschinen mit zwei angetriebenen Tragwalzen, auf denen die Wickelrollen beim Aufwickeln aufliegen.Claim 4 contains a particularly advantageous variant of the method according to claim 3 for changing full winding rolls against new winding cores in support roller winding machines with two driven support rollers, on which the winding rollers rest during winding.

Die Patentansprüche 5 bis 10 enthalten bevorzugte Vorrichtungen zur Durchführung eines Verfahrens nach den Ansprüchen 1 bis 4.Claims 5 to 10 contain preferred devices for carrying out a method according to Claims 1 to 4.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Die Zeichnung dient zur Erläuterung der Erfindung anhand vereinfacht dargestellter Ausführungsbeispiele.The drawing serves to explain the invention on the basis of simplified exemplary embodiments.

Die Fig. 1 und 2 zeigen in Seitenansicht eine erfindungsgemäße Klebemittelauftragsvorrichtung, die beim Einsatz an einer Wickelmaschine mehrere in Laufrichtung der Bahn verlaufende Klebemittelstreifen mit Abstand nebeneinander aufbringt.1 and 2 show a side view of an adhesive application device according to the invention which, when used on a winding machine, applies a plurality of adhesive strips running in the direction of travel of the web next to one another at a distance.

Fig. 3 zeigt eine Klebemittelauftragsvorrichtung, die einen breiten Klebemittelstreifen quer zur Bahnlaufrichtung aufbringt.3 shows an adhesive application device which applies a wide strip of adhesive transversely to the web running direction.

Fig. 4 zeigt eine Papierbahn mit parallelen, in Bahnlaufrichtung aufgetragenen Klebemittelstreifen.4 shows a paper web with parallel adhesive strips applied in the direction of web travel.

Fig. 5 zeigt eine Papierbahn mit einem breiten Klebemittelstreifen quer zur Laufrichtung.Fig. 5 shows a paper web with a wide strip of adhesive transverse to the direction of travel.

Fig. 6 zeigt eine Klebemittelauftragsvorrichtung, mit der ein oder mehrere Leimspuren aufgetragen werden.6 shows an adhesive application device with which one or more traces of glue are applied.

Wege zur Ausführung der ErfindungWays of Carrying Out the Invention

Die in der Zeichnung nur ausschnittsweise gezeigte Tragwalzen-Wickelmaschine weist zwei angetriebene Tragwalzen 1, 2 auf, auf denen die Wickelrollen 3 während des Aufwickelns aufliegen. Die in Längsrichtung in Einzelbahnen aufgeteilte Materialbahn 4, vorzugsweise eine Papier- oder Kartonbahn, wird von unten, von der Tragwalze 1 umgelenkt, durch den Spalt zwischen den Tragwalzen 1, 2 in das Walzenbett 5 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 Einzelheiten, soweit sie nicht die Erfindung betreffen, nicht eingegangen wird.The carrier roller winding machine, which is only shown in part in the drawing, has two driven carrier rollers 1, 2, on which the winding rollers 3 rest during the winding. The material web 4, 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, through the gap between the support rollers 1, 2 into the roller bed 5 and wound onto aligned sleeves. Such double carrier roll winding machines are widely known and z. B. in DE-OS 32 07 461, so that details, insofar as they do not relate to the invention, are not discussed.

An beiden Enden der einlaufseitigen Tragwalze 1 sind um die Tragwalzenachse schwenkbare Hebel 6 befestigt, die eine sich quer über die Arbeitsbreite erstreckende Schwenktraverse 7 tragen. An der Oberseite der Schwenktraverse 7 ist eine frei drehbare Ausstoßrolle 8 zum Ausstoßen der vollen Wickelrollen 3 über die Tragwalze 2 hinweg befestigt. An ihrer Unterseite trägt die Schwenktraverse 7 einen sich über die Arbeitsbreite erstreckenden Gegenhalter 9 zu einer Perforiereinrichtung 10, der zwei Abstützflächen 11, 12, zwischen denen sich eine Nut befindet, aufweist. Durch Abschwenken der Schwenktraverse 7 können die Abstützflächen 11, 12 - wie in Fig. 2 gezeigt - gegen die Bahn 4 bewegt werden.At both ends of the feed roller 1 on the inlet side, levers 6 are attached which can pivot about the support roller axis and carry a swivel cross member 7 which extends across the working width. A freely rotatable ejection roller 8 for ejecting the full winding rollers 3 over the support roller 2 is attached to the top of the swivel cross member 7. On its underside, the swivel cross member 7 carries a counter-holder 9, which extends over the working width, to a perforating device 10, which has two support surfaces 11, 12, between which there is a groove. By pivoting the swivel traverse 7, the support surfaces 11, 12 - as shown in FIG. 2 - can be moved against the web 4.

Die Perforiereinrichtung 10 weist ein gezahntes, sich über die Arbeitsbreite erstreckendes Messer 14 auf, das mittels einer Hub-Einheit 15 sowohl von der Bahn 4 entfernt, als auch - wie in Fig. 2 gezeigt - zum Perforieren der Bahn 4 in die Nut des abgesenkten Gegenhalters 9 gedrückt werden kann. Zum Klemmen der Bahn 4 beim Perforieren dienen zwei seitlich neben dem Messer 14 am Messerhalter 16 federnd gelagerte Klemmelemente 17, 18, die gegen die Abstützflächen 11, 12 des Gegenhalters 9 drückbar sind.The perforating device 10 has a toothed knife 14 which extends over the working width and which is removed from the web 4 by means of a lifting unit 15 and, as shown in FIG. 2, for perforating the web 4 into the groove of the lowered one Bracket 9 can be pressed. To clamp the web 4 during perforation, two clamping elements 17, 18, which are resiliently mounted on the knife holder 16 laterally next to the knife 14 and can be pressed against the support surfaces 11, 12 of the counter holder 9.

Unterhalb der Tragwalze 1 ist eine Vorrichtung 19 zum Auftragen eines Klebemittels angeordnet. Sie weist eine sich über die Arbeitsbreite erstreckende, an Schwenkarmen 20 mittels eines Antriebs drehbar gelagerte Übergabewalze 21 auf, die von unten gegen die Bahn 4 im Umschlingungsbereich der Tragwalze 1 bewegt werden kann. Die Oberfläche der Übergabewalze 21 ist so beschaffen, daß das Klebemittel an ihr weniger fest als an der Materialbahn 4 haftet, d. h. sie weist eine geringere Adhäsion als die Materialbahn 4 auf.A device 19 for applying an adhesive is arranged below the support roller 1. It has a transfer roller 21 which extends over the working width and is rotatably mounted on swivel arms 20 by means of a drive and can be moved from below against the web 4 in the wrap region of the support roller 1. The surface of the transfer roller 21 is such that the adhesive adheres to it less firmly than to the material web 4, i. H. it has a lower adhesion than the material web 4.

Nach den Figuren 1 bis 3 ist unterhalb der Übergabewalze 21 ein Klebebandspender 22 angeordnet, der an Führungen 23 quer über die Arbeitsbreite - also parallel zur Tragwalzenachse verfahrbar gelagert ist. In der in den Fig. 1 und 2 gezeigten Ausführungsform erfolgt die Führung des Klebebands 24 in Laufrichtung der Bahn 4. Dazu sind in dem quer zur Bahn verfahrbaren Schlitten 25 eine Vorratsrolle 26 aus einem Klebeband 24 mit einer doppelseitig klebenden, auf einem Trägerband 27 haftenden Klebemittelschicht frei drehbar gelagert. Zum Einsatz kommen die in der Papierindustrie üblichen Klebebänder, deren Klebemittelschicht sich sehr leicht von dem Trägerband 27 löst. Das Klebeband 24 wird am Schlitten 25 nach oben geführt und gegen die Laufrichtung der Bahn 4 bis zu einer klebebandbreiten Andruckrolle 28 geführt, die es nach unten zu einer angetriebenen Spule 29 für das Trägerband 27 umlenkt. Zum Auftragen von Klebemittelstreifen auf die Übergabewalze 21 ist die Andruckrolle 28 mittels einer Kolben-Zylinder-Einheit 30 gegen die Übergabewalze 21 in deren abgesenkter Position hochschwenkbar.According to FIGS. 1 to 3, an adhesive tape dispenser 22 is arranged below the transfer roller 21 and is mounted on guides 23 transversely across the working width - that is to say it can be moved parallel to the support roller axis. In the shown in Figs. 1 and 2 In one embodiment, the adhesive tape 24 is guided in the direction of travel of the web 4. For this purpose, a supply roll 26 made of an adhesive tape 24 with a double-sided adhesive layer of adhesive adhering to a carrier tape 27 is freely rotatably mounted in the carriage 25 which can be moved transversely to the web. The adhesive tapes used in the paper industry are used, the adhesive layer of which is very easily detached from the carrier tape 27. The adhesive tape 24 is guided upwards on the carriage 25 and guided against the direction of travel of the web 4 up to an adhesive tape-wide pressure roller 28, which deflects it downward to a driven spool 29 for the carrier tape 27. To apply adhesive strips to the transfer roller 21, the pressure roller 28 can be swiveled up against the transfer roller 21 in its lowered position by means of a piston-cylinder unit 30.

Falls kürzere Auftragszeiten für Klebemittelstreifen auf die Übergabewalze 21 erforderlich sind, - z. B. aufgrund kurzer Rollenwechselzeiten -, werden über die Maschinenbreite zwei oder mehr Klebebandspender angeordnet, die gleichzeitig auftragen.If shorter application times for adhesive strips on the transfer roller 21 are required, -. B. due to short roll change times -, two or more tape dispensers are arranged across the machine width, which apply simultaneously.

Fig. 1 zeigt die Tragwalzen-Wickelmaschine während des Aufwickelns: Die Perforiereinrichtung 10 und ihr Gegenhalter 9 befinden sich in nicht störendem Abstand von der Bahn 4. Die Übergabewalze 21 ist abgesenkt, so daß sie sich ebenfalls in Abstand von der Bahn 4 befindet. In dieser Position werden auf ihre Oberfläche mehrere parallele Klebemittelstreifen 31 längs zur Laufrichtung der Bahn 4 aufgebracht. Dazu schwenkt die von dem Klebeband 24 umschlungene Andrückrolle 28 von unten gegen die Übergabewalze 21. Durch Drehen der Übergabewalze 21 wird das Klebeband 24 von der Vorratsrolle 26 abgewickelt und von der Übergabewalze 21 ein Klebemittelstreifen 31 aufgenommen. Das verbleibende Trägerband 27 wird von der Spule 29 aufgewickelt. Nachdem die gewünschte Länge Klebestreifen sich auf der Übergabewalze 21 befindet, wird die Andruckrolle 28 abgeschwenkt, wodurch die Klebemittelschicht des Klebebandes 24 abreißt. Anschließend fährt der Schlitten 25 quer zur Bahnlaufrichtung in die nächste Klebestreifenabgabeposition. Zugleich wird die Übergabewalze 21 wieder in die Aufnahmeposition zurückgedreht, damit die aufgenommenen Klebemittelstreifen 31 in einer Flucht liegen. Durch Andrücken der Andruckrolle 28 wird der nächste Klebemittelstreifen 31 nun an die Übergabewalze 21 übergeben. In Abhängigkeit von der Breite der Bahn 4 wird so eine Anzahl paralleler und quer zur Laufrichtung der Bahn 4 fluchtender Klebemittelstreifen 31 auf die Übergabewalze 20 aufgebracht, bevorzugt erfolgt dies etwa alle 200 mm. Ebenso ist es möglich, die Positionen des Klebemittelstreifens 31 in Abhängigkeit von den Längsmesserpositionen so einzustellen, daß die Klebemittelstreifen 31 auf den Einzelbahnen gleichmäßig verteilt sind.Fig. 1 shows the support roller winding machine during winding: the perforating device 10 and its counter-holder 9 are at a non-disturbing distance from the web 4. The transfer roller 21 is lowered so that it is also at a distance from the web 4. In this position, a plurality of parallel adhesive strips 31 are applied to the surface along the direction of travel of the web 4. For this purpose, the pressure roller 28 wrapped in the adhesive tape 24 pivots against the transfer roller 21 from below. By rotating the transfer roller 21, the adhesive tape 24 is unwound from the supply roller 26 and an adhesive strip 31 is picked up by the transfer roller 21. The remaining carrier tape 27 is wound up by the spool 29. After the desired length of adhesive tape is on the transfer roller 21, the pressure roller 28 is pivoted, whereby the adhesive layer of the Adhesive tape 24 tears off. The carriage 25 then travels transversely to the web running direction into the next adhesive tape delivery position. At the same time, the transfer roller 21 is rotated back into the take-up position so that the taken-up adhesive strips 31 lie in alignment. By pressing the pressure roller 28, the next adhesive strip 31 is now transferred to the transfer roller 21. Depending on the width of the web 4, a number of parallel adhesive strips 31 which are aligned transversely to the running direction of the web 4 are applied to the transfer roller 20, preferably this is done approximately every 200 mm. It is also possible to adjust the positions of the adhesive strip 31 as a function of the longitudinal knife positions so that the adhesive strips 31 are evenly distributed on the individual webs.

Wenn die Wickelrolle 3 eine vorgegebene Bahnlänge oder einen vorgegebenen Durchmesser erreicht hat, wird die Tragwalzen-Wickelmaschine angehalten. Die Bahn 4 kommt durch die Bremskraft, die von einer nicht dargestellten Abrolleinrichtung aufgebracht wird, unter Bahnzug zum Stehen. Anschließend wird die Schwenktraverse 7 nach unten bewegt, so daß sich die Abstützflächen 11, 12 des Gegenhalters 9 an die Bahn 4 anlegen, und die Bahn 4 wird durch Perforation geschwächt. Dazu fährt das Trennmesser 14 nach oben und mit seinen Spitzen durch die Bahn 4 bis in die Nut zwischen den Abstützflächen 11, 12. Beim Perforieren ist die Bahn 4 zwischen den Klemmelementen 17, 18 und den Abstützflächen 11, 12 eingeklemmt und wird so straff gehalten. Zugleich schwenkt die Übergabewalze 21 - wie in Fig. 2 gezeigt - von unten gegen die Tragwalze 1 und legt sich an der Bahn 4 an. Die Übergabewalze 21 ist dabei so gedreht, daß der Umfangsabstand zwischen der Kontaktlinie 32 zur Bahn 4 und der Mitte der Klebemittelstreifen 31 in etwa dem Abstand zwischen der Kontaktlinie 32 zum Trennmesser 14 entspricht. Anschließend wird das Trennmesser 14 mit den Klemmelementen 17, 18 abgesenkt und die Übergabewalze 21 auf Freilauf geschaltet. Die Tragwalze 1 wird danach mit reduziertem Bahnzug erneut gestartet, wobei sich die anliegende Übergabewalze 21 mitdreht. Dabei werden die Klebemittelstreifen 31 an der Kontaktlinie 32 unter Druck gegen die Bahn 4 gepreßt, wobei sie sich von der Übergabewalze 21 lösen und an der Bahn 4 festkleben, da die Haftung an der Bahn 4 größer als an der Übergabewalze 21 ist. Die Perforierlinie 33 der Bahn 4 hat sich inzwischen ebenfalls bis zur Kontaktlinie 32 vorbewegt, daher befinden sich die Klebemittelstreifen 31 beidseits der Perforierlinie 33 auf der Bahn 4 (Fig. 4).When the winding roll 3 has reached a predetermined web length or a predetermined diameter, the carrier roller winding machine is stopped. The web 4 comes to a standstill under web tension due to the braking force that is applied by a rolling device, not shown. Subsequently, the swivel cross member 7 is moved downward, so that the support surfaces 11, 12 of the counter-holder 9 bear against the web 4, and the web 4 is weakened by perforation. For this purpose, the cutting knife 14 moves upwards and with its tips through the web 4 into the groove between the support surfaces 11, 12. When perforating, the web 4 is clamped between the clamping elements 17, 18 and the support surfaces 11, 12 and is thus kept taut . At the same time, the transfer roller 21 swivels - as shown in FIG. 2 - against the support roller 1 from below and lies against the web 4. The transfer roller 21 is rotated so that the circumferential distance between the contact line 32 to the web 4 and the center of the adhesive strips 31 corresponds approximately to the distance between the contact line 32 to the separating knife 14. The separating knife 14 is then lowered with the clamping elements 17, 18 and the transfer roller 21 is switched to freewheeling. The support roller 1 is then again with reduced web tension started, with the adjacent transfer roller 21 also rotating. The adhesive strips 31 are pressed on the contact line 32 under pressure against the web 4, whereby they detach from the transfer roller 21 and stick to the web 4, since the adhesion to the web 4 is greater than to the transfer roller 21. The perforation line 33 of the web 4 has meanwhile also advanced to the contact line 32, so the adhesive strips 31 are located on both sides of the perforation line 33 on the web 4 (FIG. 4).

Nach Abgabe der Klebemittelstreifen 31 an die Bahn 4 wird die Übergabewalze 21 wieder abgesenkt und kann in dieser Position für den nächsten Rollenwechsel erneut Klebemittelstreifen aufnehmen. Die Bahn 4 wird weiter bewegt, bis sich die geschwächte Bahnstelle (Perforierlinie 33) mit den Klebemittelstreifen 31 im Walzenbett 5 oberhalb des Spalts zwischen den beiden Tragwalzen 1, 2 befindet. Dort wird die Bahn 4 abgestoppt und die Bremse an der Abrollvorrichtung wird arretiert, um mit maximaler Kraft zurückzuhalten. Anschließend wird die Wickelrolle 3 mit der Ausstoßrolle 9 von der umschlungenen Tragwalze 1 ein wenig angehoben und mittels der Tragwalze 2 gedreht. Dabei reißt nun die Bahn 4 an der Perforierlinie 33 durch, so daß sich sowohl am ablaufenden Bahnende, als auch am neugeschaffenen Bahnanfang Klebemittelstreifen 31 befinden. Der neugeschaffene Bahnanfang wird an der Tragwalze 1 gehalten, dies kann z. B. durch Ansaugen mittels Unterdruck oder mittels mechanischer Halteelemente erfolgen. Die volle Wickelrolle 3 wird weiter gedreht, bis das mit Klebemittelstreifen 31 versehene Bahnende durch die Kontaktlinie zur Tragwalze 1 oder zur Ausstoßrolle 8 bewegt wurde, um so das Bahnende an der vollen Wickelrolle 3 festzukleben. Anschließend wird die volle Wickelrolle 3 mit der Ausstoßrolle 8 über die Tragwalze 2 ausgestoßen und ein neuer Satz Hülsen in das Walzenbett 5 eingelegt. Nach Auflegen einer nicht dargestellten Druckwalze werden die Tragwalzen 1, 2 erneut in Bewegung gesetzt, um den mit Klebemittelstreifen 31 versehenen neuen Bahnanfang in Kontakt mit den Hülsen zu bringen. Eine haltbare Klebeverbindung der Bahn 4 mit den Hülsen ist hergestellt, wenn der Bahnanfang mit den Klebemittelstreifen 31 den Spalt zwischen den Hülsen und der Tragwalze 1 durchlaufen hat. Die Tragwalzen-Wickelmaschine kann anschließend auf maximale Wickelgeschwindigkeit beschleunigt werden.After the adhesive strips 31 have been delivered to the web 4, the transfer roller 21 is lowered again and can again take up adhesive strips in this position for the next roll change. The web 4 is moved further until the weakened web site (perforation line 33) with the adhesive strips 31 is in the roller bed 5 above the gap between the two support rollers 1, 2. The web 4 is stopped there and the brake on the unwinding device is locked in order to hold back with maximum force. Subsequently, the winding roller 3 with the ejection roller 9 is raised a little by the wrapped roller 1 and rotated by means of the roller 2. The web 4 now tears through the perforation line 33, so that there are adhesive strips 31 both at the end of the web that is running and at the beginning of the new web. The newly created beginning of the web is held on the support roller 1, this can e.g. B. by suction by means of vacuum or by means of mechanical holding elements. The full winding roll 3 is rotated further until the web end provided with adhesive strips 31 has been moved through the contact line to the support roller 1 or to the ejection roller 8, so as to glue the web end to the full winding roll 3. Then the full winding roll 3 with the ejection roll 8 is ejected via the support roller 2 and a new set of tubes is inserted into the roller bed 5. After placing a pressure roller, not shown, the support rollers 1, 2 are set in motion again in order to bring the new beginning of the web provided with adhesive strips 31 into contact with the sleeves bring. A durable adhesive connection of the web 4 with the sleeves is established when the beginning of the web with the adhesive strips 31 has passed through the gap between the sleeves and the support roller 1. The carrier roller winding machine can then be accelerated to the maximum winding speed.

Bei der Ausführungsform nach Fig. 3 wird ein breiter, beidseitig klebender Klebemittelstreifen 34 quer zur Laufrichtung der Bahn 4, also achsparallel auf die Übergabewalze 21 aufgetragen (Fig. 5). Dazu ist der den Schlitten 25 des Klebebandspenders 22 quer über die Arbeitsbreite verfahrbar gelagert, wobei sich die Achsen der Andrückrolle 28 und der Vorratsrolle 26 senkrecht zur Achse der Übergabewalze 21 erstrecken. Damit ein ausreichend breiter Klebemittelstreifen 34 flächig anliegend auf die Übergabewalze 21 aufgetragen werden kann, ist die Andrückrolle 28 in Achsrichtung an ihrem Umfang konkav gekrümmt. Dies kann z. B. durch Einsatz sogenannter Diabolo-Rollen erreicht werden. Die Andrückrolle 28 preßt das Klebeband 24 - wie bei der vorhergehenden Ausführungsform erläutert - an die Übergabewalze 21 an, während der Schlitten über die gesamte Arbeitsbreite bewegt wird. Anschließend wird die Andruckrolle 28 abgesenkt, dabei reißt die Klebemittelschicht des Klebebands 24 durch. Damit der Klebebandauftrag auf die Übergabewalze 21 schneller erfolgt, kann zu beiden Maschinenseiten jeweils ein Klebebandspender 22 angeordnet sein, der dann jeweils auf eine Hälfte der Übergabewalze 21 die Klebemittelstreifen 34 aufträgt. Die Übergabe der Klebemittelstreifen 34 an die Bahn 4 erfolgt auf die vorhin beschriebene Weise durch Andrücken der Übergabewalze 21 an die Bahn 4.In the embodiment according to FIG. 3, a wide, double-sided adhesive strip 34 is applied transversely to the running direction of the web 4, that is to say axially parallel to the transfer roller 21 (FIG. 5). For this purpose, the carriage 25 of the adhesive tape dispenser 22 is mounted such that it can be moved across the working width, the axes of the pressure roller 28 and the supply roller 26 extending perpendicular to the axis of the transfer roller 21. In order that a sufficiently wide adhesive strip 34 can be applied to the transfer roller 21 in a flat manner, the pressure roller 28 is concavely curved in the axial direction on its circumference. This can e.g. B. can be achieved by using so-called diabolo rolls. The pressure roller 28 presses the adhesive tape 24 - as explained in the previous embodiment - against the transfer roller 21 while the carriage is moved over the entire working width. The pressure roller 28 is then lowered, the adhesive layer of the adhesive tape 24 tearing through. So that the adhesive tape is applied to the transfer roller 21 faster, an adhesive tape dispenser 22 can be arranged on each side of the machine, which dispenser then applies the adhesive strips 34 to one half of the transfer roller 21. The adhesive strips 34 are transferred to the web 4 in the manner described above by pressing the transfer roller 21 onto the web 4.

In Fig. 6 ist eine weitere Ausführungsform beschrieben, bei der die doppelseitig klebenden Klebemittelstreifen auf der Übergabewalze 21 durch Aufsprühen erzeugt wird. Dazu befinden sich unterhalb der Übergabewalze 21 eine oder mehrere Leimdüsen 35, die entweder über die gesamte Bahnbreite angeordnet oder quer zur Bahn verfahrbar sind. Mittels der Düsen 35 werden auf die Übergabewalze 21 eine oder mehrere Leimspuren, z. B. von einem Dispersionskleber, aufgesprüht, die zu doppelseitig klebenden Streifen abbinden. Anschließend werden sie auf die vorhin beschriebene Weise an die Bahn 4 übergeben.A further embodiment is described in FIG. 6, in which the double-sided adhesive strips of adhesive are produced on the transfer roller 21 by spraying. For this purpose, one or more glue nozzles 35 are located below the transfer roller 21, either over the entire web width arranged or traversable across the track. By means of the nozzles 35 one or more traces of glue, for. B. sprayed by a dispersion adhesive that set to double-sided adhesive strips. They are then transferred to web 4 in the manner described above.

Claims (10)

  1. Process for changing wound reels in machines for winding material webs, in particular paper or board webs, onto cores, in which process double-sided adhesive strips (31, 34) are applied to the material web (4) for sticking the web start to a new core and/or the web end to a full wound reel (3), characterized in that the adhesive strips (31, 34) are firstly applied to a transfer element (21) which can be moved against the web (4) and whose surface has a lower adhesion than the web (4), and the transfer element (21) is subsequently moved against the web (4) and transfers the adhesive strips (31, 34) to the web start or the web end.
  2. Process according to Claim 1, characterized in that the movable transfer element is a free-running transfer roll (21) which rests on the moved web (4) and rolls the adhesive strips (31, 34) onto the web (4).
  3. Process according to Claim 1 or 2, characterized in that before removing a full wound reel (3), the web (4) running into the winding machine is weakened along a weakening line or perforation line (33) extending transversely to the running direction, adhesive strips (31, 34) are applied on both sides of the weakening line, the web (4) is subsequently cut through by increasing the web tension, and the web end is then stuck to the full wound reel (3) and the new web start, after the introduction of a new winding core, is stuck to the latter.
  4. Process according to Claim 3 for the automatic changing of a full wound reel (3) for a new winding core in carrier roll winding machines having two driven carrier rolls (1, 2), characterized in that the web (4), deflected by a carrier roll (1), is led from below through the carrier roll gap into the roll bed (5) and the roll change is carried out with the following steps:
    - the web (4) is stopped for the purpose of weakening,
    - the weakening line or perforation line (33) is subsequently moved into the roll bed (5) and is stopped there, adhesive strips (31, 34) are applied to both sides of the weakening line during this movement,
    - the web start to be newly produced is firmly held on the wrapped-around carrier roll (1),
    - the web (4) is subsequently cut through by rotating the full wound reel (3) against a braking force, and the web end is firmly stuck to the full wound reel (3),
    - the full wound reel (3) is then removed from the roll bed, and
    - after the introduction of a new winding core, this is stuck to the new web start by rotating both the carrier rolls (1, 2).
  5. Device for winding material webs for carrying out a process according to Claims 1 to 4, characterized by a transfer element (21), which can be moved against the incoming web (4), for double-sided adhesive strips (31, 34), the surface of the said transfer element having a lower adhesion than the web (4), and by means such as adhesive tape dispensers (22) or glue nozzles (35) for the application of adhesive strips (31, 34) to the transfer element.
  6. Device according to Claim 5, characterized by a transfer roll (21), which is driven and can be switched to free-running, as transfer element.
  7. Device according to Claim 5 or 6, characterized by one or more adhesive tape dispensers (22), which are supported so that they can be moved transversely to the web running direction on that side of the transfer element or of the transfer roll (21) which faces away from the web (4), and apply adhesive strips (31, 34), transversely to or in the web running direction, to the transfer element or the transfer roll (21).
  8. Device according to Claim 5 or 6, characterized by glue nozzles (35) for spraying adhesive strips onto the transfer element.
  9. Device according to one of Claims 5 to 8, having a carrier or support roll (1) which is partly wrapped around by the web (4), characterized in that the transfer element or the transfer roll (21) can be pressed against the carrier or support roll (1) in the region wrapped around by the web (4).
  10. Device according to one of Claims 5 to 9, characterized in that, on the inlet side, before the transfer element or the transfer roll (21), there is arranged a device for weakening the web, such as a perforating device (10).
EP91914816A 1990-09-14 1991-08-26 Process and device for changing winding rollers Expired - Lifetime EP0500841B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4029180 1990-09-14
DE4029180A DE4029180A1 (en) 1990-09-14 1990-09-14 METHOD AND DEVICE FOR CHANGING REELS
PCT/EP1991/001624 WO1992005100A1 (en) 1990-09-14 1991-08-26 Process and device for changing winding rollers

Publications (2)

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EP0500841A1 EP0500841A1 (en) 1992-09-02
EP0500841B1 true EP0500841B1 (en) 1996-01-17

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JP (1) JP3202226B2 (en)
AT (1) ATE133140T1 (en)
CA (1) CA2068641C (en)
DE (2) DE4029180A1 (en)
ES (1) ES2089225T3 (en)
FI (1) FI105672B (en)
WO (1) WO1992005100A1 (en)

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Also Published As

Publication number Publication date
EP0500841A1 (en) 1992-09-02
JPH05502006A (en) 1993-04-15
DE59107285D1 (en) 1996-02-29
ATE133140T1 (en) 1996-02-15
CA2068641A1 (en) 1992-03-15
FI922182A (en) 1992-05-13
CA2068641C (en) 2002-12-10
FI105672B (en) 2000-09-29
ES2089225T3 (en) 1996-10-01
FI922182A0 (en) 1992-05-13
WO1992005100A1 (en) 1992-04-02
JP3202226B2 (en) 2001-08-27
DE4029180A1 (en) 1992-03-19

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