EP0778809B1 - Method and device for continuously winding up a continuous paper web - Google Patents

Method and device for continuously winding up a continuous paper web Download PDF

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Publication number
EP0778809B1
EP0778809B1 EP96923944A EP96923944A EP0778809B1 EP 0778809 B1 EP0778809 B1 EP 0778809B1 EP 96923944 A EP96923944 A EP 96923944A EP 96923944 A EP96923944 A EP 96923944A EP 0778809 B1 EP0778809 B1 EP 0778809B1
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EP
European Patent Office
Prior art keywords
winding
accordance
drum
hardness
reel
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.)
Revoked
Application number
EP96923944A
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German (de)
French (fr)
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EP0778809A1 (en
Inventor
Hans-Peter Dr. Sollinger
Rudolf Beisswanger
Ulrich Schettler
Karl-Josef BÖCK
Zygmunt Madrzak
Karl Rück
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Voith Patent GmbH
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Voith Sulzer Papiertechnik Patent GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/02—Supporting 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
    • B65H18/00—Winding webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of 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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/26—Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4146—Winding involving particular drive arrangement
    • B65H2301/41466—Winding involving particular drive arrangement combinations of drives
    • B65H2301/41468—Winding involving particular drive arrangement combinations of drives centre and nip drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
    • B65H2401/10—Materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/13—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/51—Sequence of process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/12—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/11—Actuating means linear pneumatic, e.g. inflatable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/514—Elastic elements

Definitions

  • the invention relates to a method for continuous winding a running web in a winding machine, according to the preamble of claim 1. Also relates to Invention a device (winding machine) for carrying out the procedure is suitable. Such a winding machine can either be a pure rewinder for machine width Webs or part of a slitter.
  • a winder is e.g. from DE-C-40 07 329 or DE 44-A-01 959.
  • Another constructive solution is a winding machine like the one in the European patent application EP-A-04 83 092 is described.
  • Such winding machines generally form the end of a paper making machine or an off-line coater to the resulting paper web in the form of a winding roll bring to.
  • the paper web is in its full width wound on a drum.
  • This is a cylindrical winding core, the diameter of which in modern wide paper machines can be over 0.6 m.
  • For support of the winding roll created on the reel has the Tambour on both ends of the trunnion with which it is on e.g. horizontal rails resting.
  • each sleeve corresponds to the width of the one in question Partial paper web.
  • the resulting winding rolls are supported by at least one support roller; e.g. is a provided from two support rollers or changing bed there are two changing beds formed from three support rollers.
  • guide blocks can be present, whereby on each guide block engages a clamping head in the relevant sleeve.
  • the winding process has a very large one in papermaking Meaning, because there is sometimes a risk that a impeccably produced paper still so badly affected during winding can be that parts of a winding roll are not for sale are.
  • Wrapping defects include the so-called gloss spots, Folds and bursts; they are mostly through it causes that winding rolls with the largest possible diameter and wants to form a correspondingly high weight.
  • a theory states, for example, that the winding hardness has a high initial value should drop to a lower end value (e.g. DE-C-40 07 329).
  • the intent of this process is to focus on the core area of the From the start, the winding roll was so tight towards the reel wrap that it is stiffened by the layers of paper and that thereby the e.g. resulting from the deflection of the drum Mistakes can be avoided. But this has to Consequence that the web can possibly be overstretched, maybe even bursts and becomes unusable.
  • the winding hardness is initially relatively low generated; after that, it gradually rises to a maximum which is finally finished with.
  • the web tension is reduced to one generated another way.
  • a drive for the carrier drum usually runs slightly faster than the drives in front of the carrier drum located web guide rollers. This builds up the web tension, which then because of the static friction on the carrier drum get into the winding roll (at least largely) remains.
  • the invention has for its object a method for continuous winding of a running web according to the Develop the preamble of claim 1, in which the Proportion of unsalable part resulting from winding errors Paper, cardboard, film or the like. Is smaller than in known Method.
  • the problem is solved took a completely different path: you form - either in the field the innermost layers of the resulting winding roll or on Sheath of the winding core (preferably a reel) - one relatively thin soft intermediate layer and you also care to ensure that as large a part of the winding roll as possible with the highest possible winding hardness directly on or in The smallest possible radial distance from the soft intermediate layer is formed.
  • FIG. 1 shows a schematic side view of a Carrier drum winding machine (a so-called Pope-Roller).
  • Figure 2 shows schematically a slitter.
  • Figure 3 is a diagram that exemplifies the desired Course of the winding hardness WH over that wound on a winding core Path layer thickness SD shows.
  • FIGS 4 to 7 show different drum constructions.
  • FIGS. 8 to 10 show possible modifications of the one in FIG 1 shown winding machine.
  • the incoming paper web 9 first runs through a pulling press 8, then partially wraps around a carrying drum 10 and is then wound up on a drum 11.
  • the emerging The winding roll is designated by 12.
  • Longitudinal rails 13 serve to support the reel 11 with the winding roller 12.
  • levers 7 and 7a a lifting device Drum pressed onto the drum 10 with the winding roll become.
  • a control device 6 determines (via a control line 6a) the level of the line force, also via control lines 6b, 6c and 6d, the drives M for the pull press 8 and / or the support drum 10 and / or the Drum 11.
  • the control takes place, among other things. depending on that increasing weight or the increasing diameter of the winding roll 12, e.g. by means of a measuring line 6e.
  • the device described in Figure 1 allows the between the carrying drum 10 and the winding roller which is becoming larger 12 line force to vary so that it in a relatively short initial phase of the winding process is small and is then increased rapidly.
  • the so-called train can be varied, this is the one set in the paper web 9 with the aid of the drives Web tension in the direction of web travel.
  • a certain train can be set, for example, by a small speed difference between the support drum 10 and the pull press 8 or another web guide device, not shown (e.g. dryer section or smoothing unit). If the Drum 11, as shown, with a so-called center drive is provided, can between the winding roller 12 and Carrier drum 10 also a small speed difference can be set.
  • a similar course of the winding hardness can be achieved with Winding up a paper web 9 in a roll cutting machine 2.
  • the paper web 9 is replaced by an existing one Winding roll 12a unwound with reel 11a; while she runs via guide rollers 23, 24 and by a slitter 25 on a first support roller 1 with a second support roller 2 a winding bed for the emerging new winding rolls 12 ' form.
  • a belt guide 26 is also indicated schematically as Web pull-in aid and a compressed air box 27 with blower 28 to form a compressed air cushion between the support rollers 1, 2 and the winding roll 12 '.
  • This compressed air cushion is used for Reducing the contact forces of the winding roll on the support rollers, if the diameter of the winding roll 12 'a certain Value exceeds.
  • a controller 20 receives signals from one Setpoint generator 29 regarding the level of the desired working speed and via line 35 a measured value over the instantaneous diameter of the winding roll 12 '.
  • the control device 20 controls the working speeds via lines 30 to 34 the unwinding station (winding roll 12a), the guide rollers 23, 24 and the support rollers 1, 2, also about the line 36 to the height of the load roller 37 the winding roller 12 'exerted force.
  • the braking torque at the unwind station (winding roll 9a) temporarily reduced and / or the drive torque to the Carrier rollers 1, 2 briefly relative to the other drives reduced in order to influence the train.
  • the drum 11 of the winding machine shown in Fig. 1 be formed according to one of Figures 4 to 7.
  • the drum 11A is shown in FIG. 4 with a relatively thick and provided soft covering 41, which is fixed over its entire length is connected to the metallic body 40 of the drum.
  • FIG. 5 Another possibility is shown in FIG. 5.
  • a thin additional outer jacket 42 provided that only at its two ends with the lateral surface of the drum 11B is connected, so that an annular Space 43 is formed, which one with a pressure medium can act.
  • the pressure can be varied, e.g. by varying of the drive M of a pressure increase pump 44 it is advantageous to increase the pressure depending on the weight the winding roller 12 (Fig.
  • 6 shows a detail from a drum 11C.
  • the latter can also be replaced by a thin metal jacket.
  • the soft rubber layer 7 can be replaced by a spiral hose 47 wound on the roller body 40A thereof Interior one is pressurized.
  • Figure 10 is a variant of Figure 8.
  • the belt guide roller 16 can be pivoted far up, so that the band 14 - if necessary - supports the winding 12 from the start and presses the wrap onto the drum 10.

Landscapes

  • Winding Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Advancing Webs (AREA)

Abstract

PCT No. PCT/EP96/02797 Sec. 371 Date Jun. 9, 1997 Sec. 102(e) Date Jun. 9, 1997 PCT Filed Jun. 26, 1996 PCT Pub. No. WO97/01502 PCT Pub. Date Jan. 16, 1997A method and device for the winding up of a moving web of paper (9) on a reel spool (11), as large a part as possible of the developing wound roll (12) having a high degree of winding hardness (WH), characterized by the fact that a relatively soft intermediate layer is formed between the wound roll (12) of high winding hardness and the winding core (11). This is achieved in the manner that, during a short initial phase of the winding process, it is ensured that the winding hardness (WH) is relatively slight in the innermost layers of the wound roll (12), whereupon an immediate transition to a relatively high winding hardness (WH) is effected which is being substantially maintained during the rest of the winding-up process. Alternately, the relatively soft intermediate layer can also be created in the manner that the reel spool (11A-11D) has a soft covering (41, 42, 43, 44, 45, 46, 47) on a metal reel spool body (40).

Description

Die Erfindung betrifft ein Verfahren zum kontinuierlichen Aufwickeln einer laufenden Bahn in einer Wickelmaschine, gemäß dem Oberbegriff von Patentanspruch 1. Außerdem betrifft die Erfindung eine Vorrichtung (Wickelmaschine), die zum Durchführen des Verfahrens geeignet ist. Eine derartige Wickelmaschine kann entweder eine reine Aufwickelmaschine für maschinenbreite Bahnen oder Teil einer Rollenschneidmaschine sein.The invention relates to a method for continuous winding a running web in a winding machine, according to the preamble of claim 1. Also relates to Invention a device (winding machine) for carrying out the procedure is suitable. Such a winding machine can either be a pure rewinder for machine width Webs or part of a slitter.

Eine Aufwickelmaschine ist z.B. aus DE-C-40 07 329 bzw. DE 44-A-01 959 bekanntgeworden. Eine andere konstruktive Lösung ist eine Wickelmaschine, wie sie in der europäischen Patentanmeldung EP-A-04 83 092 beschrieben wird. Derartige Wickelmaschinen bilden im allgemeinen die Endpartie einer Papier-Herstellungsmaschine oder auch einer Off-line-Streichmaschine, um die dort anfallende Papierbahn in die Form einer Wickelrolle zu bringen. Bei diesem Vorgang wird die Papierbahn in ihrer vollen Breite auf einen Tambour aufgewickelt. Dies ist ein walzenförmiger Wikkelkern, dessen Durchmesser bei modernen breiten Papiermaschinen über 0,6 m betragen kann. Zur Unterstützung der auf dem Tambour entstehenden Wickelrolle hat der Tambour an seinen beiden Enden Lagerzapfen, mit denen er auf z.B. horizontalen Schienen ruht.A winder is e.g. from DE-C-40 07 329 or DE 44-A-01 959. Another constructive solution is a winding machine like the one in the European patent application EP-A-04 83 092 is described. Such winding machines generally form the end of a paper making machine or an off-line coater to the resulting paper web in the form of a winding roll bring to. During this process, the paper web is in its full width wound on a drum. This is a cylindrical winding core, the diameter of which in modern wide paper machines can be over 0.6 m. For support of the winding roll created on the reel has the Tambour on both ends of the trunnion with which it is on e.g. horizontal rails resting.

Bei anderen Wickelmaschinen, die in der Regel Teil einer Rollenschneidmaschine sind (siehe DE 38 32 601 und DE 32 21 929), werden längsgeschnittene Papier-Teilbahnen auf Hülsen aufgewickelt. Die Länge jeder Hülse entspricht der Breite der betreffenden Papier-Teilbahn. Die entstehenden Wickelrollen werden durch wenigstens eine Tragwalze abgestützt; z.B. ist ein aus zwei Tragwalzen Wickelbett vorgesehen oder es sind zwei aus drei Tragwalzen gebildete Wickelbetten vorhanden. Zusätzlich können Führungsböcke vorhanden sein, wobei an jedem Führungsbock ein Spannkopf in die betreffende Hülse eingreift.With other winding machines, which are usually part of a slitter winder are (see DE 38 32 601 and DE 32 21 929), longitudinally cut paper webs are wound onto cores. The length of each sleeve corresponds to the width of the one in question Partial paper web. The resulting winding rolls are supported by at least one support roller; e.g. is a provided from two support rollers or changing bed there are two changing beds formed from three support rollers. In addition, guide blocks can be present, whereby on each guide block engages a clamping head in the relevant sleeve.

Aus EP-A-0 613 849 ist eine Wickelmaschine bekannt, die einen Tambour mit einem weichen Bezug aufweist - siehe dort den Bezug 12. Aus DE-A-93 05 304 ist ebenfalls eine Wickelmaschine bekanntgeworden. Dort weist ein Tambour einen weichen Bezug 2 auf.From EP-A-0 613 849 a winding machine is known which has a drum has a soft cover - see cover 12 there DE-A-93 05 304 a winding machine has also become known. There a drum has a soft cover 2.

Der Wickelvorgang hat in der Papierherstellung eine sehr große Bedeutung, weil bisweilen die Gefahr besteht, daß ein bisher einwandfrei produziertes Papier beim Wickeln noch derart beeinträchtigt werden kann, daß Teile einer Wickelrolle unverkäuflich sind. Zu Wickelfehlern gehören die sogenannten Glanzstellen, Falten und Platzer; sie werden überwiegend dadurch verursacht, daß man Wickelrollen mit möglichst großem Durchmesser und entsprechend hohem Gewicht bilden will.The winding process has a very large one in papermaking Meaning, because there is sometimes a risk that a impeccably produced paper still so badly affected during winding can be that parts of a winding roll are not for sale are. Wrapping defects include the so-called gloss spots, Folds and bursts; they are mostly through it causes that winding rolls with the largest possible diameter and wants to form a correspondingly high weight.

Diese Wickelfehler kommen vermutlich folgendermaßen zustande: Wenn die Papierbahn auf einen Tambour gewickelt wird und die Wickelrolle etwa 60-90 % seines fertigen Durchmessers erreicht hat, so bewirken die hohen Gewichtskräfte relative Verschiebungen einiger Papierlagen gegeneinander, so daß es auf Grund der Gleitreibung zwischen den Papierlagen zu den Fehlerstellen kommt. Solche Fehlerstellen treten hauptsächlich im Kernbereich der Wickelrolle auf, also etwa im Bereich bis zu 25 % der Wickelauflage auf dem Tambour. Wird nun eine volle Wickelrolle später abgewickelt und werden diese Fehlerstellen sichtbar, so wird die restliche Papierbahn abgetrennt und dem Ausschuß zugeführt. Aus diesem Grunde gibt es immer wieder einen unerwünschten Verlust durch Ausschuß. These winding errors probably occur as follows: When the paper web is wound on a spool and the Winding roll reaches about 60-90% of its finished diameter the high weight forces cause relative shifts some layers of paper against each other so that it is aground the sliding friction between the paper layers to the defects is coming. Such flaws mainly occur in the core area the winding roll, i.e. in the range up to 25% the changing mat on the reel. Now becomes a full winding roll later processed and these defects become visible, so the remaining paper web is cut off and the committee fed. For this reason there is always one unwanted loss from committee.

Über die Art und Weise, wie man zu einer fehlerfreien Wickelrolle gelangen kann, gibt es vielerlei Theorien. Eine Theorie besagt z.B., daß die Wickelhärte von einem hohen Anfangswert auf einen niedrigeren Endwert abfallen soll (z.B. DE-C-40 07 329). Die Absicht bei diesem Verfahren ist, den Kernbereich der Wickelrolle von Anfang an derart stramm auf den Tambour zu wickeln, daß er durch die Papierlagen versteift wird und daß dadurch die z.B. aus der Durchbiegung des Tambours resultierenden Fehlerstellen vermieden werden. Dieses hat aber zur Folge, daß die Bahn eventuell überdehnt werden kann, vielleicht sogar auch platzt und damit unbrauchbar wird. Man hat auch versucht, das Problem dadurch zu lösen, daß man sehr biegesteife Tamboure (mit besonders großem Durchmesser) benutzt, jedoch oft ohne Erfolg.About the way to get a flawless winding roll there are many theories. A theory states, for example, that the winding hardness has a high initial value should drop to a lower end value (e.g. DE-C-40 07 329). The intent of this process is to focus on the core area of the From the start, the winding roll was so tight towards the reel wrap that it is stiffened by the layers of paper and that thereby the e.g. resulting from the deflection of the drum Mistakes can be avoided. But this has to Consequence that the web can possibly be overstretched, maybe even bursts and becomes unusable. One has also tried to solve the problem by being very rigid Drum (with a particularly large diameter) used, however often without success.

Gemäß JP-A-4-89746 wird anfangs eine relativ geringe Wickelhärte erzeugt; danach steigt sie allmählich auf einen Höchstwert an, mit dem schließlich fertiggewickelt wird.According to JP-A-4-89746, the winding hardness is initially relatively low generated; after that, it gradually rises to a maximum which is finally finished with.

Um die Wickelhärte zu beeinflussen, hat man zwei Parameter zur Verfügung:

  • 1. Den Bahnzug, das ist die Längsspannung, mit der eine Papierbahn auf die Wickelrolle aufläuft.
  • 2. Die Linienkraft, das ist die Kraft, die während des Wikkelvorganges in dem Nip herrscht, der sich zwischen einer Walze und der Wickelrolle befindet und durch den die Papierbahn läuft.
    • There are two parameters available to influence the winding hardness:
  • 1. The web tension, that is the longitudinal tension with which a paper web runs onto the winding roll.
  • 2. The line force, that is the force that prevails during the winding process in the nip, which is located between a roller and the winding roll and through which the paper web runs.

    • Je nach Wickelmaschinen-Konstruktion wird der Bahnzug auf eine andere Weise erzeugt. Im Falle einer Wickelmaschine mit Tragtrommel, läuft ein Antrieb für die Tragtrommel meistens geringfügig schneller als die Antriebe der vor der Tragtrommel gelegenen Bahnleitwalzen. Dadurch wird die Bahnspannung aufgebaut, die dann wegen der Haftreibung auf der Tragtrommel bis in die Wickelrolle hinein (zumindest weitgehend) erhalten bleibt.Depending on the winding machine design, the web tension is reduced to one generated another way. In the case of a winding machine with a carrying drum, a drive for the carrier drum usually runs slightly faster than the drives in front of the carrier drum located web guide rollers. This builds up the web tension, which then because of the static friction on the carrier drum get into the winding roll (at least largely) remains.

    Erfolgt das Aufwickeln einer Bahn ohne Beteiligung einer Tragtrommel, so wird durch Einleiten eines Drehmomentes in den Tambour ("Zentrumsantrieb") der Bahnzug durch geringfügig höhere Wickelumfangsgeschwindigkeit gegenüber der Bahngeschwindigkeit aufgebaut. If a web is wound up without the involvement of a carrying drum, by introducing a torque into the Tambour ("center drive") the train by slightly higher Circumferential peripheral speed compared to the web speed built up.

    Denkbar ist auch eine Kombination der zuvor genannten Methoden oder ein Zugaufbau allein zwischen Tragtrommel-Antrieb und Tambour-Zentrumsantrieb.A combination of the aforementioned methods is also conceivable or a train structure alone between the carrier drum drive and Drum center drive.

    Beim Aufbringen einer oben beschriebenen Linienkraft ist der Wickelrollenradius an der Preßstelle ("nip") lokal geringer als außerhalb der Preßstelle. Somit erfährt die Papierbahn beim Verlassen der Preßstelle einen Längszug, der die Wickelhärte erhöht. Auch hier sind natürlich Kombinationen mit den vorausbeschriebenen Parametern denkbar.When applying a line force described above is the Winding roll radius at the pressing point ("nip") locally smaller than outside the press point. Thus the paper web experiences when leaving the press point a longitudinal pull, which the winding hardness elevated. Here too there are of course combinations with the previously described parameters conceivable.

    Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum kontinuierlichen Aufwickeln einer laufenden Bahn gemäß dem Oberbegriff von Patentanspruch 1 zu entwickeln, bei dem der aus Fehlern beim Wickeln resultierende Anteil unverkäuflichen Papiers, Kartons, Folie oder dgl. kleiner ist als bei bekannten Verfahren.The invention has for its object a method for continuous winding of a running web according to the Develop the preamble of claim 1, in which the Proportion of unsalable part resulting from winding errors Paper, cardboard, film or the like. Is smaller than in known Method.

    Diese Aufgabe wird durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.This task is characterized by the characteristic features of claim 1 solved.

    Es hat sich gezeigt, daß mit einer weiteren Erhöhung der Wikkelhärte das Problem der obengenannten Fehlerstellen nicht behebbar ist. Gemäß der Erfindung wird zur Lösung des Problems ein ganz anderer Weg beschritten: Man bildet - entweder im Bereich der innersten Lagen der entstehenden Wickelrolle oder am Mantel des Wickelkerns (vorzugsweise eines Tambours) - eine relativ dünne weiche Zwischenschicht und man sorgt außerdem dafür, daß ein möglichst großer Teil der entstehenden Wickelrolle mit möglichst hoher Wickelhärte unmittelbar auf oder in möglichst kleiner radialer Entfernung von der weichen Zwischenschicht gebildet wird. It has been shown that with a further increase in hardness the problem of the above-mentioned defects cannot be remedied is. According to the invention, the problem is solved took a completely different path: you form - either in the field the innermost layers of the resulting winding roll or on Sheath of the winding core (preferably a reel) - one relatively thin soft intermediate layer and you also care to ensure that as large a part of the winding roll as possible with the highest possible winding hardness directly on or in The smallest possible radial distance from the soft intermediate layer is formed.

    Dieses Lösungsprinzip ist auf unterschiedlichen Wegen realisierbar:

  • A) Das Bilden einer weichen Zwischenschicht "im Bereich der innersten Lagen der Wickelrolle" bedeutet mit anderen Worten: Man bildet bewußt im Kern der Wickelrolle eine Schwachstelle, worin Relativbewegungen zwischen benachbarten Papierlagen ungehindert stattfinden können (Anspruch 2). Überraschend wurde nämlich folgendes festgestellt: Wenn man nur die innersten Lagen der Wickelrolle, also z.B. die unmittelbar auf dem Wickelkern (Tambour, Wickelhülse oder dgl.) entstehenden (maximal etwa 5 % der gesamten Schichtdicke umfassenden) Bahnlagen relativ weich wickelt und danach unmittelbar und möglichst rasch mit der bisher üblichen hohen Wickelhärte weiterwickelt, dann entstehen im Kern "Soll-Gleitstellen", durch die weitere Gleitstellen und damit weitere Fehlerstellen in der zunehmend größer werdenden Wickelrolle vermieden werden. Im Ergebnis steht somit ein wesentlich größerer Anteil an verkaufsfähigem Bahnmaterial zur Verfügung als bisher.
  • B) Zu einem gleichen oder zumindest ähnlich guten Ergebnis kommt man, wenn man durch Verwendung eines mit weichem Bezug versehenen Wickelkerns (vorzugsweise Tambours) dafür sorgt, daß zwischen einer insgesamt harten Wickelrolle und dem harten metallischen Körper des Tambours Relativbewegungen stattfinden können (Anspruch 10). In diesem Fall ist also die "weiche Zwischenschicht" ein Bestandteil des Wickelkerns, vorzugsweise des Tambours.
    • This solution principle can be implemented in different ways:
  • A) The formation of a soft intermediate layer "in the area of the innermost layers of the winding roll" means in other words: One deliberately forms a weak point in the core of the winding roll, in which relative movements between adjacent paper layers can take place unimpeded (claim 2). Surprisingly, the following was found: If you only wind the innermost layers of the winding roll, e.g. the directly on the winding core (reel, winding sleeve or the like) (relatively maximum 5% of the total layer thickness), the web layers are relatively soft and then immediately and if possible If you continue to wind quickly with the previously usual high winding hardness, then "nominal sliding points" arise in the core, by means of which further sliding points and thus further defects in the winding roller, which is becoming ever larger, are avoided. As a result, a much larger proportion of salable web material is available than before.
  • B) The same or at least a similarly good result is obtained if, by using a winding core provided with a soft cover (preferably reel), it is ensured that relative movements can take place between an overall hard winding reel and the hard metallic body of the reel (claim 10) . In this case, the "soft intermediate layer" is a component of the winding core, preferably the reel.

    • Gemäß US-PS 5,265,812 ist schon versucht worden, das oben beschriebene Problem dadurch zu lösen, daß der Tambour einen Gummi- oder einen Polyurethan-Bezug erhält (wobei nähere Angaben über Eigenschaften des Bezuges fehlen) oder daß der Tambour einen Doppel-Mantel aufweist, wobei der äußere Mantel nur an den sogenannten Bessel-Punkten mit dem inneren Mantel verbunden ist (diese Konstruktion verursacht ungewöhnlich hohe Herstellungskosten). According to US Pat. No. 5,265,812, attempts have been made to do the above Solve the problem by making the drum one Rubber or a polyurethane cover (with further details missing properties of the cover) or that the drum has a double jacket, the outer jacket only connected to the inner shell at the so-called Bessel points is (this construction causes unusually high Manufacturing costs).

    Die beigefügten Zeichnungen zeigen verschiedene Ausführungsbeispiele der Erfindung.The accompanying drawings show various exemplary embodiments the invention.

    Die Figur 1 zeigt in einer schematischen Seitenansicht eine Tragtrommel-Wickelmaschine (einen sogenannten Pope-Roller).1 shows a schematic side view of a Carrier drum winding machine (a so-called Pope-Roller).

    Die Figur 2 zeigt schematisch eine Rollenschneidmaschine.Figure 2 shows schematically a slitter.

    Die Figur 3 ist ein Diagramm, das beispielhaft den gewünschten Verlauf der Wickelhärte WH über der auf einem Wickelkern aufgewickelten Bahn-Schichtdicke SD zeigt.Figure 3 is a diagram that exemplifies the desired Course of the winding hardness WH over that wound on a winding core Path layer thickness SD shows.

    Die Figuren 4 bis 7 zeigen unterschiedliche Tambour-Konstruktionen.Figures 4 to 7 show different drum constructions.

    Die Figuren 8 bis 10 zeigen mögliche Abwandlungen der in Figur 1 dargestellten Wickelmaschine.FIGS. 8 to 10 show possible modifications of the one in FIG 1 shown winding machine.

    Gemäß Figur 1 läuft die ankommende Papierbahn 9 zunächst durch eine Zugpresse 8, umschlingt sodann teilweise eine Tragtrommel 10 und wird danach auf einen Tambour 11 aufgewickelt. Die entstehende Wickelrolle ist mit 12 bezeichnet. Längsschienen 13 dienen zum Abstützen des Tambours 11 mit der Wickelrolle 12. Mit Hilfe von Hebeln 7 und einer Hubeinrichtung 7a kann der Tambour mit der Wickelrolle an die Tragtrommel 10 angedrückt werden. Dabei wird zwischen Tragtrommel und Wickelrolle eine einstellbare Linienkraft erzeugt. Eine Steuereinrichtung 6 bestimmt (über eine Steuerleitung 6a) die Höhe der Linienkraft, außerdem über Steuerleitungen 6b, 6c und 6d, die Antriebe M für die Zugpresse 8 und/oder die Tragtrommel 10 und/oder den Tambour 11. Die Steuerung erfolgt u.a. in Abhängigkeit von dem zunehmenden Gewicht bzw. dem zunehmenden Durchmesser der Wikkelrolle 12, z.B. mittels einer Meßleitung 6e.According to Figure 1, the incoming paper web 9 first runs through a pulling press 8, then partially wraps around a carrying drum 10 and is then wound up on a drum 11. The emerging The winding roll is designated by 12. Longitudinal rails 13 serve to support the reel 11 with the winding roller 12. With the help of levers 7 and 7a a lifting device Drum pressed onto the drum 10 with the winding roll become. There is a between the drum and winding roll adjustable line force generated. A control device 6 determines (via a control line 6a) the level of the line force, also via control lines 6b, 6c and 6d, the drives M for the pull press 8 and / or the support drum 10 and / or the Drum 11. The control takes place, among other things. depending on that increasing weight or the increasing diameter of the winding roll 12, e.g. by means of a measuring line 6e.

    Die in Figur 1 beschriebene Vorrichtung ermöglicht es, die zwischen der Tragtrommel 10 und der größer werdenden Wickelrolle 12 herrschende Linienkraft derart zu variieren, daß sie in einer relativ kurzen Anfangsphase des Wickelvorganges relativ gering ist und danach rasch erhöht wird. Zusätzlich oder alternativ hierzu kann der sogenannte Bahnzug variiert werden, dies ist die in der Papierbahn 9 mit Hilfe der Antriebe eingestellte Bahnspannung in Bahnlaufrichtung. Ein bestimmter Bahnzug ist einstellbar beispielsweise durch eine kleine Geschwindigkeitsdifferenz zwischen der Tragtrommel 10 und der Zugpresse 8 oder einer anderen nicht dargestellten Bahnführungseinrichtung (z.B. Trockenpartie oder Glättwerk). Falls der Tambour 11, wie dargestellt, mit einem sogenannten Zentrumsantrieb versehen ist, kann zwischen der Wickelrolle 12 und der Tragtrommel 10 ebenfalls ein kleiner Geschwindigkeitsunterschied eingestellt werden. In allen Fällen besteht die Möglichkeit, in der Anfangsphase jedes neuen Wickelvorganges den Bahnzug kurzzeitig auf einen relativ geringen Wert einzustellen, wonach er rasch erhöht wird. In dieser Anfangsphase (auch schon beim sogenannten Tambourwechsel) befindet sich der neue Tambour 110 vorzugsweise schon auf den Schienen 13. Hierzu wird die nahezu volle Wickelrolle 12 etwas von der Tragtrommel 10 entfernt; die Hebel 7 werden sofort an den neuen Tambour 110 angelegt, um von Anfang an mit zu beschriebenen Steuern der Linienkraft beginnen zu können.The device described in Figure 1 allows the between the carrying drum 10 and the winding roller which is becoming larger 12 line force to vary so that it in a relatively short initial phase of the winding process is small and is then increased rapidly. In addition or alternatively, the so-called train can be varied, this is the one set in the paper web 9 with the aid of the drives Web tension in the direction of web travel. A certain train can be set, for example, by a small speed difference between the support drum 10 and the pull press 8 or another web guide device, not shown (e.g. dryer section or smoothing unit). If the Drum 11, as shown, with a so-called center drive is provided, can between the winding roller 12 and Carrier drum 10 also a small speed difference can be set. In all cases there is the possibility in the initial phase of each new winding process Briefly adjust the web train to a relatively low value, after which it is increased rapidly. In this initial phase (even with the so-called drum change) is the new drum 110 preferably already on the rails 13. For this purpose, the almost full winding roll 12 is somewhat of the Carrier drum 10 removed; the lever 7 are immediately to the new drum 110 to be included from the beginning Controlling the line force can begin.

    Mit Hilfe des zuvor beschriebenen Variierens der Linienkraft und/oder des Bahnzuges kann dafür gesorgt werden, daß die Wikkelhärte WH in jeder neu entstehenden Wickelrolle gemäß Fig. 3 in einer kurzen Anfangsphase des Wickelvorganges relativ gering ist, danach jedoch sehr rasch auf einen relativ hohen Wert gesteigert wird. Danach kann man die Wickelhärte WH mit zunehmender Bahn-Schichtdicke SD ganz allmählich etwas zurücknehmen oder im wesentlichen konstant halten oder allmählich noch weiter erhöhen, je nach den Anforderungen des Einzelfalles oder der Papiersorte.With the help of the previously described variation of the line force and / or the train can be ensured that the hardness WH in each newly created winding roll according to FIG. 3 relatively small in a short initial phase of the winding process but then very quickly to a relatively high level Value is increased. Then you can change the winding hardness WH with gradually decrease the increasing layer thickness SD or keep essentially constant or gradually increase even further, depending on the requirements of the individual case or the type of paper.

    Ein ähnlicher Verlauf der Wickelhärte kann erzielt werden beim Aufwickeln einer Papierbahn 9 in einer Rollenschneidmaschine gemäß Fig. 2. Dort wird die Papierbahn 9 von einer vorhandenen Wickelrolle 12a mit Tambour 11a abgewickelt; dabei läuft sie über Leitwalzen 23, 24 und durch eine Längsschneideinrichtung 25 auf eine erste Tragwalze 1, die mit einer zweiten Tragwalze 2 für die entstehenden neuen Wickelrollen 12' ein Wickelbett bilden.A similar course of the winding hardness can be achieved with Winding up a paper web 9 in a roll cutting machine 2. There the paper web 9 is replaced by an existing one Winding roll 12a unwound with reel 11a; while she runs via guide rollers 23, 24 and by a slitter 25 on a first support roller 1 with a second support roller 2 a winding bed for the emerging new winding rolls 12 ' form.

    Schematisch angedeutet sind noch eine Bänderführung 26 als Bahn-Einziehhilfe und ein Druckluftkasten 27 mit Gebläse 28 zum Bilden eines Druckluftpolsters zwischen den Tragwalzen 1, 2 und der Wickelrolle 12'. Dieses Druckluftpolster dient zum Verringern der Auflagekräfte der Wickelrolle auf den Tragwalzen, wenn der Durchmesser der Wickelrolle 12' einen bestimmten Wert überschreitet. Außerdem erkennt man eine Belastungswalze 37, mit der die noch kleine Wickelrolle (mittels einer Andrückeinrichtung 38) gegen die Tragwalzen 1, 2 angedrückt werden kann. Eine Steuereinrichtung 20 empfängt Signale von einem Sollwertgeber 29 betreffend die Höhe der gewünschten Arbeitsgeschwindigkeit und über die Leitung 35 einen Meßwert über den augenblicklichen Durchmesser der Wickelrolle 12'. Die Steuereinrichtung 20 steuert über die Leitungen 30 bis 34 die Arbeitsgeschwindigkeiten der Abwickelstation (Wickelrolle 12a), der Leitwalzen 23, 24 und der Tragwalzen 1, 2, außerdem über die Leitung 36 die Höhe der mittels der Belastungswalze 37 auf die Wickelrolle 12' ausgeübten Kraft. Zum Erzielen des Wickelhärteverlaufes gemäß Fig. 3 wird zu Beginn jedes Wickelvorganges entweder an der Abrollstation (Wickelrolle 9a) das Bremsmoment kurzzeitig reduziert und/oder das Antriebsmoment an den Tragwalzen 1, 2 relativ zu den anderen Antrieben kurzzeitig verringert, um hierdurch Einfluß auf den Bahnzug zu nehmen. Alternativ dazu oder zusätzlich kann man am Beginn des Wickelvorgangs die Andrückkraft (bei 38) kurzzeitig verringern. Ebenso kann man zusätzlich oder alternativ vorübergehend in die Hülsen 11' ein Bremsmoment oder eine Entlastungskraft einleiten. Dies folgt über nicht dargestellte, in die Hülsen eingreifende Spannköpfe, die Teil einer Führungseinrichtung sind. Zweckmäßig wird man die Wickelrolle 12a der Abrollstation, solange ihr Durchmesser sehr groß ist, mittels einer Gewichtsentlastungseinrichtung 39 unterstützen. A belt guide 26 is also indicated schematically as Web pull-in aid and a compressed air box 27 with blower 28 to form a compressed air cushion between the support rollers 1, 2 and the winding roll 12 '. This compressed air cushion is used for Reducing the contact forces of the winding roll on the support rollers, if the diameter of the winding roll 12 'a certain Value exceeds. You can also see a load roller 37, with which the still small winding roll (by means of a pressing device 38) are pressed against the support rollers 1, 2 can. A controller 20 receives signals from one Setpoint generator 29 regarding the level of the desired working speed and via line 35 a measured value over the instantaneous diameter of the winding roll 12 '. The control device 20 controls the working speeds via lines 30 to 34 the unwinding station (winding roll 12a), the guide rollers 23, 24 and the support rollers 1, 2, also about the line 36 to the height of the load roller 37 the winding roller 12 'exerted force. To achieve the winding hardness curve 3 is at the beginning of each winding process either the braking torque at the unwind station (winding roll 9a) temporarily reduced and / or the drive torque to the Carrier rollers 1, 2 briefly relative to the other drives reduced in order to influence the train. Alternatively or in addition, you can at the start of the winding process briefly reduce the pressing force (at 38). You can also temporarily or additionally or alternatively the sleeves 11 'initiate a braking torque or a relief force. This follows via not shown, engaging in the sleeves Clamping heads that are part of a guide device. Expediently, the winding roll 12a of the unwinding station becomes as long as their diameter is very large by means of a weight relief device 39 support.

    Alternativ zu den bisher beschriebenen Maßnahmen, deren Ergebnis in Fig. 3 dargestellt ist, oder zusätzlich zu diesen Maßnahmen können die Tamboure 11 der in Fig. 1 dargestellten Wikkelmaschine nach einer der Figuren 4 bis 7 ausgebildet werden. Der Tambour 11A ist gemäß Fig. 4 mit einem relativ dicken und weichen Belag 41 versehen, der auf seiner ganzen Länge fest mit dem metallischen Körper 40 des Tambours verbunden ist. Eine andere Möglichkeit ist in Fig. 5 dargestellt. Dort ist anstelle eines Belages ein dünner zusätzlicher Außenmantel 42 vorgesehen, der nur an seinen beiden Enden mit der Mantelfläche des Tambours 11B verbunden ist, so daß ein ringförmiger Zwischenraum 43 gebildet ist, den man mit einem Druckmittel beaufschlagen kann. Der Druck ist variierbar, z.B. durch Variieren des Antriebs M einer Drucksteigerungspumpe 44. Dabei ist es vorteilhaft, den Druck in Abhängigkeit vom zunehmenden Gewicht der Wickelrolle 12 (Fig. 1) zu steigern. Die Fig. 6 zeigt ein Detai aus einem Tambour 11C. Dort ist auf einem metallischen Walzenkörper 40 eine Weichgummischicht 45 und auf diese eine Hartgummischicht 46 aufgetragen. Letztere kann auch durch einen dünnen Metallmantel ersetzt werden. Die Weichgummischicht kann gemäß Fig. 7 ersetzt werden durch einen spiralig auf den Walzenkörper 40A aufgewickelten Schlauch 47 dessen Innenraum man mit Druck beaufschlagt.As an alternative to the measures described so far, the result 3, or in addition to these measures can the drum 11 of the winding machine shown in Fig. 1 be formed according to one of Figures 4 to 7. The drum 11A is shown in FIG. 4 with a relatively thick and provided soft covering 41, which is fixed over its entire length is connected to the metallic body 40 of the drum. Another possibility is shown in FIG. 5. There is instead of a covering, a thin additional outer jacket 42 provided that only at its two ends with the lateral surface of the drum 11B is connected, so that an annular Space 43 is formed, which one with a pressure medium can act. The pressure can be varied, e.g. by varying of the drive M of a pressure increase pump 44 it is advantageous to increase the pressure depending on the weight the winding roller 12 (Fig. 1) to increase. 6 shows a detail from a drum 11C. There is a metallic one Roller body 40 and a soft rubber layer 45 and this applied a hard rubber layer 46. The latter can also be replaced by a thin metal jacket. The soft rubber layer 7 can be replaced by a spiral hose 47 wound on the roller body 40A thereof Interior one is pressurized.

    Falls erforderlich, kann man bei jedem Wickelvorgang - zusätzlich zu der im Anspruch 1 angegebenen Maßnahme - wenigstens in der zweiten Hälfte des Wickelvorganges dem größer werdenden Gewicht der Wickelrolle mittels einer flächigen Entlastungseinrichtung entgegenwirken. Hierzu können verschiedene bekannte Vorrichtungen angewandt werden; siehe z.B. DE 44 22 877.2 oder EP 0 384 533 B1. Weitere Möglichkeiten sind in den Figuren 8 bis 10 dargestellt.If necessary, you can - in addition to the measure specified in claim 1 - at least in the second half of the winding process increasing weight of the winding roll by means of a counteract flat relief device. You can do this various known devices are used; please refer e.g. DE 44 22 877.2 or EP 0 384 533 B1. Further Possibilities are shown in Figures 8 to 10.

    Die wesentlichen Teile der in Fig. 8 dargestellten Wickelvorrichtung sind:

    9
    ankommende Papierbahn
    10
    Tragtrommel
    11
    Tambour
    12
    Wickelrolle (die auf dem Tambour aufgewickelte Papierbahn)
    13
    Längsschienen zum Abstützen des Tambours mit der Wickelrolle
    14
    Endloses Band zum unmittelbaren Abstützen der Wickelrolle
    15, 16, 17
    Bandleitwalzen; davon ist eine (15) starr gelagert und antreibbar, die anderen ruhen auf Schwenkhebeln (18); die Leitwalze (16) ist auf dem Schwenkhebel zwecks Spannung des Bandes verschiebbar.
    19
    Hubeinrichtung zum Anheben des Schwenkhebels und somit zum Andrücken des Bandes 14 von unten her an die Wickelrolle 12.
    Wenn diese voll ist, wird sie auf den Längsschienen 13 (nach rechts) von der Tragtrommel 10 entfernt; dazu werden Schwenkhebeln 18 und Leitwalze 16 abgeschwenkt. Falls gewünscht, kommt das Band 14 mit der Wickelrolle 12 erst dann in Kontakt, wenn die letztere eine bestimmte Größe erreicht hat.
    The essential parts of the winding device shown in FIG. 8 are:
    9
    incoming paper web
    10th
    Carrier drum
    11
    Drum
    12th
    Winding roll (the paper web wound on the reel)
    13
    Longitudinal rails for supporting the reel with the winding roll
    14
    Endless tape for immediate support of the winding roll
    15, 16, 17
    Strip guide rollers; one of them (15) is rigidly supported and drivable, the others rest on swivel levers (18); the guide roller (16) is displaceable on the swivel lever for the purpose of tensioning the belt.
    19th
    Lifting device for lifting the swivel lever and thus for pressing the band 14 against the winding roller 12 from below.
    When it is full, it is removed from the carrying drum 10 on the longitudinal rails 13 (to the right); for this purpose pivot levers 18 and guide roller 16 are pivoted away. If desired, the tape 14 does not come into contact with the winding roll 12 until the latter has reached a certain size.

    Bei Figur 9 übernimmt die Tragtrommel 10 die Funktion der antreibbaren Band-Leitwalze 15 von Figur 8. Eine zusätzliche Spannwalze 19 für das Band 14 ist ungefähr vertikal verfahrbar.In Figure 9, the drum 10 takes over the function of drivable belt guide roller 15 of Figure 8. An additional Tension roller 19 for the belt 14 can be moved approximately vertically.

    Die Figur 10 ist eine Variante zu Figur 8. Die Band-Leitwalze 16 kann weit nach oben geschwenkt werden, so daß das Band 14 - falls erforderlich - von Anfang an den Wickel 12 stützt und den Wickel an die Tragtrommel 10 andrückt.Figure 10 is a variant of Figure 8. The belt guide roller 16 can be pivoted far up, so that the band 14 - if necessary - supports the winding 12 from the start and presses the wrap onto the drum 10.

    Diesen Ausführungsbeispielen ist gemeinsam, daß eine flächige Entlastungskraft mittels eines einzigen maschinenbreiten und über Leitwalzen umlaufenden endlosen Bandes auf die Wickelrolle ausgeübt wird. Durch diese Maßnahme kann erwartet werden, daß ein noch höherer Prozentsatz aus einer Wickelrolle als verkaufsfähiges Papier zur Verfügung steht als allein mit den Maßnahmen gemäß Anspruch 1.These embodiments have in common that a flat Relief force using a single machine width and over guide belt of continuous belt on the winding roll is exercised. This measure can be expected that an even higher percentage from a winding roll available as salable paper is available as alone with the measures according to claim 1.

    Claims (20)

    1. Method of winding up a running web of paper (9), card, foil or the like onto a winding core (11), preferably onto a drum, in which method the largest possible part of the wound reel (12) which arises has a high winding hardness, characterized in that one forms a relatively soft intermediate layer between the wound reel (12) of high winding hardness and the winding core (11).
    2. Method in accordance with claim 1, characterized in that measures are taken to achieve a relatively low winding hardness in a short initial phase of the winding up process in the innermost layers of the wound reel (12), whereafter a transition is directly made to a relatively high winding hardness, which one substantially retains during the further winding up process.
    3. Method in accordance with claim 2, for a winding machine, which has at least one support roll or "carrying drum" (10) and a controllable apparatus (7) for the pressing of a machine width wound reel (12) formed on a drum (11) against the at least one support roll, so that the line force is variable, characterized in that the desired lower winding hardness in the innermost layers of the wound reel is set by an only initially relatively low line force for a short time, whereafter the line force is rapidly increased.
    4. Method in accordance with claim 2, for a winding machine with at least one centre drive M acting on a drum (11), which can introduce a controllable torque into the machine width wound reel (12), so that the web tension is variable, characterized in that the desired lower winding hardness is set in the innermost layers of the wound reel (12) by an only initially low torque for a short time, whereafter the torque and through this the web tension is rapidly increased.
    5. Method in accordance with the preamble of claim 3, characterized in that the low winding hardness is set by an initial short-term reduction of the web tension by means of control of the drive torque of the support roll (10).
    6. Method in accordance with claim 2, characterized in that the lower winding hardness is set by using any desired combination of the measures of claims 3 and 4, 3 and 5, 4 and 5 or 4 and 5.
    7. Method in accordance with claim 2, for a winding machine belonging to a roll cutting machine, in which one unwinds the web in an unwinding station, cuts it longitudinally into part webs and winds the latter - with support by at least one support roll - onto sleeves, characterized in that one sets the desired lower winding hardness in the innermost layers of each wound reel (12') by a short term reduction of the braking torque at the unwinding station and/or of the drive torque at the support roll or rolls (1, 2) and/or by the short term introduction of a braking torque directly into the sleeves (11') and/or by a short term reduction of the contact pressure force (38) of a loading roll (37), whereby one reduces the line force between the winding reels and the support roll(s) for a short time.
    8. Method in accordance with claim 7, in which one inserts a clamping head into each end of each sleeve, characterized in that one introduces a short term relief force into the winding reels via the clamping heads.
    9. Apparatus for carrying out the method in accordance with claim 2, comprising a winding machine and a control means (6) for influencing the winding hardness, characterized by a design of the control device (6) such that it initiates a relatively low winding hardness in the innermost layers of the wound reel in a short initial phase of the winding up process and directly thereafter initiates the creation of a relatively high winding hardness.
    10. Apparatus for carrying out the method in accordance with claim 9, comprising a winding machine with a winding core, preferably a drum, onto which the web is wound up and a device for setting a high winding hardness, characterized in that the drum has a soft cover.
    11. Apparatus in accordance with claim 10, characterized in that the soft cover (41) is substantially connected to the full jacket surface of the drum (11A), and in that the cover (41) has a high resilience, corresponding to a rubber hardness of 50-200 P&J, preferably from 100-150 P&J.
    12. Apparatus in accordance with claim 10, characterized in that the cover (42) is connected to the jacket surface of the drum (11B) only in the regions of its two ends.
    13. Apparatus in accordance with claim 12, characterized in that the intermediate space (43) located between the jacket surface of the drum (11B) and the cover (42) can be loaded by a pressure means.
    14. Apparatus in accordance with claim 13, characterized in that the pressure of the pressure means is variable, e.g. can be increased in dependence on the increasing weight of the winding reel.
    15. Apparatus in accordance with one of the claims 12 to 14, characterized in that the cover (42) is formed from a metallic material.
    16. Apparatus in accordance with claim 10, characterized in that the soft cover (45) of the drum (11C) is sleeved by a hard jacket (46).
    17. Apparatus in accordance with claim 16, characterized in that the soft cover (47) of the drum (11D) is formed by a spirally wound on hose, which can be loaded with pressure.
    18. Apparatus in accordance with one of the claims 9 to 17, characterized in that a device for exerting an areal relief force onto the wind reel (12) is provided, for example by means of a belt (14) or of a pressure cushion (50).
    19. Apparatus in accordance with claim 18, characterized by a control device which initiates the varying of the relief force in dependence on the increasing weight of the wound reel.
    20. Apparatus in accordance with claim 19, characterized in that the control device controls the level of the relief force such that a relative to and fro sliding of adjacent web layers in the wound reel, resulting from vertical shear stresses, which arise in consequence of the self-weight of the wound reel predominantly in the region of the horizontal central plane of the drum and the direction of which reverses for each half drum rotation, is at least largely avoided.
    EP96923944A 1995-06-28 1996-06-26 Method and device for continuously winding up a continuous paper web Revoked EP0778809B1 (en)

    Applications Claiming Priority (5)

    Application Number Priority Date Filing Date Title
    DE19522975 1995-06-28
    DE19522974 1995-06-28
    DE19522975 1995-06-28
    DE19522974 1995-06-28
    PCT/EP1996/002797 WO1997001502A1 (en) 1995-06-28 1996-06-26 Method and device for continuously winding up a continuous paper web

    Publications (2)

    Publication Number Publication Date
    EP0778809A1 EP0778809A1 (en) 1997-06-18
    EP0778809B1 true EP0778809B1 (en) 1999-11-03

    Family

    ID=26016254

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96923944A Revoked EP0778809B1 (en) 1995-06-28 1996-06-26 Method and device for continuously winding up a continuous paper web

    Country Status (9)

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    US (1) US5848756A (en)
    EP (1) EP0778809B1 (en)
    JP (1) JPH10505314A (en)
    KR (1) KR970705507A (en)
    AT (1) ATE186277T1 (en)
    BR (1) BR9606556A (en)
    CA (1) CA2198608A1 (en)
    DE (1) DE59603559D1 (en)
    WO (1) WO1997001502A1 (en)

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    Also Published As

    Publication number Publication date
    CA2198608A1 (en) 1997-01-16
    ATE186277T1 (en) 1999-11-15
    WO1997001502A1 (en) 1997-01-16
    DE59603559D1 (en) 1999-12-09
    KR970705507A (en) 1997-10-09
    US5848756A (en) 1998-12-15
    BR9606556A (en) 1997-11-25
    JPH10505314A (en) 1998-05-26
    EP0778809A1 (en) 1997-06-18

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