EP1688379B1 - Méthode et dispositif pour dérouler une bande de matériau d' un rouleau de matériau - Google Patents

Méthode et dispositif pour dérouler une bande de matériau d' un rouleau de matériau Download PDF

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Publication number
EP1688379B1
EP1688379B1 EP20050112104 EP05112104A EP1688379B1 EP 1688379 B1 EP1688379 B1 EP 1688379B1 EP 20050112104 EP20050112104 EP 20050112104 EP 05112104 A EP05112104 A EP 05112104A EP 1688379 B1 EP1688379 B1 EP 1688379B1
Authority
EP
European Patent Office
Prior art keywords
web
reel
web reel
roll
cutting device
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.)
Not-in-force
Application number
EP20050112104
Other languages
German (de)
English (en)
Other versions
EP1688379A3 (fr
EP1688379A2 (fr
Inventor
Josef Nelles
Michael KÜHNHOLD
Henning Gugel
Grischa Georgiew
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 Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1688379A2 publication Critical patent/EP1688379A2/fr
Publication of EP1688379A3 publication Critical patent/EP1688379A3/fr
Application granted granted Critical
Publication of EP1688379B1 publication Critical patent/EP1688379B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status 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
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/105—Opening of web rolls; Removing damaged outer layers; Detecting the leading end of a closed 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/54—Auxiliary process performed during handling process for managing processing of handled material
    • B65H2301/543—Auxiliary process performed during handling process for managing processing of handled material processing waste 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
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/90—Machine drive
    • B65H2403/94—Other features of machine drive
    • B65H2403/942—Bidirectional powered handling device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/51—Encoders, e.g. linear

Definitions

  • the invention relates to a method for unwinding a web of material web roll, in which one detects a web start of the material web and moves away from the web roll, wherein the web start generated by at least the outer layer of the material web in the direction of gravity severed at least the outer layer of the web and the removed on the web roll separated remainder of the web removed, wherein the web roll to remove the separated remainder is rotated until the rest of the web roll slides down.
  • the invention relates to a device for unwinding a material web from a material web roll with a bearing device in which the web roll is rotatably mounted, wherein in the direction of gravity in a region below the bearing means a cross-cutting device is arranged, with at least the outer layer of wound on the web roll Material web in the direction of gravity lower third is severed, wherein the bearing means comprises a roller drive, with which the web roll opposite to its winding direction is rotatable.
  • a paper web is produced almost endlessly in a paper machine. At the output of the paper machine, this paper web is wound onto a relatively stable roll core, the so-called drum, to form a web roll.
  • Such material web rolls or Volltamboure can initially be stored. They can then be fed to a processing station for the paper web and placed there in an unwinding station.
  • the processing station can be, for example, calenders set up offline, coating machines, winder or the like. In any case, the paper web must be unwound from the roll of web material to pass through the treatment device.
  • the paper web is calendered in a calender. In a coater, a line is applied. In a slitter, the paper web is cut in the longitudinal direction and wound up the resulting partial webs to partial web rolls.
  • the paper web with so-called riders, so short adhesive tapes, secured to the spool i. the end of the paper web is glued to the circumference of the web roll. If the paper web is to be further processed, then the Volltambour is inserted into the unwinding device. The riders must then be manually removed by an operator. Thereafter, the spool is rotated so that the beginning of the paper web can be detected and passed through the processing station.
  • EP-A1-1340702 a device for unwinding a material web from a web roll is presented, which is adapted to detect a web start of the web and move away from the web roll. The device looks to the Generating the web start a separator before, which can be effective in the lower part of the web.
  • the invention has for its object to enable a web insertion without or with little intervention of an operator.
  • This object is achieved in a method of the type mentioned in that one determines the rotation angle and uses it in combination with the position of the cutting to determine the position of the web start.
  • the position of the web beginning after severing the at least outer layer of the material web is always fixed.
  • the beginning of the web is initially where the outer layer or optionally also several outer layers of the web roll have been severed.
  • the severing takes place at a position which ensures that the forces on both sides of the dividing line are largely balanced.
  • a nearly absolute balance is obtained when the cutting takes place at the lowest point of the web roll, in a view from the front side so in the "6 o'clock position".
  • the severed web web layers then have practically the same weight on both sides of the crest of the roll of web material, so that only a relatively small train is applied to the outer layers of the winding roll during cutting.
  • the web roll is turned back by a predetermined amount so far that the web start hangs freely downwards over a predetermined distance. This makes it easier to detect the web start.
  • the web roll with its apex is rotated counter to the withdrawal direction.
  • the withdrawal direction is not to be understood here as the direction of rotation of the web roll when unwinding, but as a page. If the material web is pulled off to the right, then you twist the web roll so that its apex, so seen in the direction of gravity top point, moves to the left. This applies regardless of whether the material web is pulled in this situation from above or from below of the web roll. If you set the direction of rotation to remove the separated remainder in this way, then you only need a pulper opening. This is then arranged in a place where enough space is available. The pulper opening thus does not prevent further operation.
  • transverse cutting device For cutting through, it is preferred to use a transverse cutting device which is guided in a guide running parallel to the axis of the web roll. This results in a dividing line and thus a web beginning, which runs at right angles to the longitudinal direction of the material web. This facilitates further handling.
  • a cross-cutting device is used with a surface sensor and a separating element which protrudes a predetermined distance over the surface of the material web roll determined by the surface sensor.
  • the separator is thus able to penetrate slightly into the surface of the web roll and thus sever the outermost layer or multiple outer layers of the web.
  • one will set the predetermined distance to the thickness of the web or a multiple of the thickness of the web.
  • the object is achieved in that in the direction of gravity in a region below the bearing means a cross-cutting device is arranged, with the at least the outer layer of wound on the web roll material web in the direction of gravity lower third is severable.
  • the cross-cutting device is able to sever the material web, which is still wound on the web roll in the direction of gravity below.
  • the outer layers of the web that have been severed then hang down on both sides of the web roll. This results in the severing of the web only relatively low tensile forces acting on the outer layers of the web.
  • the risk that the web breaks uncontrollably, so is kept relatively small.
  • the position of the web start is then determined by the position of the cross-cutting device, so that the device, based on this information, can automatically detect the web start.
  • the bearing device has a roller drive with which the web roll is rotatable counter to its winding direction.
  • the roller drive can then be used to remove the separated on the web roll separated remainder of the web. If the web roll has been rotated counter to its winding direction by a sufficient angle, then the separated remainder of the web automatically slides down.
  • a rotation angle sensor is provided which detects the rotation of the web roll.
  • the rotation angle sensor thus ensures that it does not lose information about the position of the web start, but is maintained.
  • a pulper opening is arranged on the side of the web roll opposite the take-off side.
  • Pulperötechnisch then falls the separated remainder of the web automatically when the web roll has been rotated against its winding direction. This facilitates the disposal of the rest.
  • the cross-cutting device is guided in a direction parallel to the axis of the web roll guide.
  • This can be relatively parallel to generate the dividing line parallel to the axis of the web roll.
  • the web start then forms a line which runs transversely to the longitudinal direction of the material web.
  • Such a guide also makes it easier to keep the cross-cutting device always in the same orientation to the web roll.
  • the cross-cutting device comprises a surface sensor which detects the position of the surface of the material web roll, and a separating element, which can be positioned by a drive so that it dips over a predetermined distance in the surface of the web roll.
  • the predetermined distance is set, for example, to the thickness of the material web.
  • the surface sensor detects the surface of the web roll. This provides the information about the position of the surface. If you let now dipping the separator to the material web thickness in this surface, then exactly one layer of the material web is severed. If one chooses the predetermined distance to a multiple of the material web thickness, then a corresponding multiple of material web layers is severed. It can therefore achieve a relatively accurately adjusted cross-cutting.
  • the separating element preferably has a rotating knife.
  • the outer layer or the outer layers of the material web are therefore cut open.
  • the separator may have a wedge. The wedge enters the end face of the web roll and then tears open the outer layer or the outer layers of the material web.
  • the bearing device and the cross-cutting device are arranged in a preparation position of the device.
  • the material web roll 3 lies with its roll core 4 in a storage device 5, in which it can be rotated.
  • This bearing device 5 may be the bearing device, which is later used for unwinding the material web 2 from the material web roll 3. However, it may also be a storage device in a preparation position, in which the material web roll 3 is prepared only for further unwinding.
  • the end of the material web 2 is defined by so-called tabs 6, which are generally formed by short adhesive strips which extend in the circumferential direction, on the circumference of the web roll 3.
  • tabs 6 are manually removed to the end of the web 2, which then forms the beginning of the unwinding capture and by a downstream and in Fig. 1 leading not shown treatment station.
  • a treatment station may be, for example, a calender, a coater, a slitter or the like. However, this preparation is virtually impossible to automate.
  • the device 1 In order to automate the detection of the web start, the device 1 is now provided with some additional elements.
  • a cross-cutting device 7 is arranged below the bearing device 5.
  • the cross-cutting device 7 has a knife 8, the in a guide 9 along the axial length of the web roll 3 can be performed, as described below in connection with Fig. 6 is described.
  • the knife 8 is able to sever the outer layer or several outer layers of the web roll 3 during this displacement.
  • the bearing device 5 has a drive 10 with which the material web roll 3 can be rotated.
  • This drive 10 may be relatively weak, because he has to turn the web roll 3 only slowly and to a small extent.
  • a rotation angle sensor 11 is also provided in the region of the bearing device, which detects the angle of rotation by which the material web roll 3 is rotated.
  • This rotation angle sensor 11 can cooperate, for example, with not shown markers on the roll core 4.
  • the entire storage device 5 is arranged on a machine-fixed frame 12, which is shown only schematically.
  • a pulper opening 13 is provided at the left end of the web roll 3, which leads to a pulper, not shown.
  • the pulper opening 13 may have an elevated left side wall 14 to facilitate "catching" of the outer layers of the web roll 3, as will be described below.
  • Shown is an operating mode in which the material web is pulled off from above. In this case, the web roll 3 rotates clockwise. In a corresponding manner, the material web can of course be removed from below from the web roll 3. In this case, the web roll rotates counterclockwise. In both cases, the deduction direction is here to the right.
  • Fig. 2 a situation is shown in which the knife 8 has been moved over the entire axial length of the web roll 3.
  • the knife 8 has severed the outer layers.
  • the two ends 15, 16 of the layers hang down freely from the two sides of the material web roll 3.
  • the right side of the material web roll 3, from which the material web 2 is to be removed later is referred to as the front side and the opposite side as the back side.
  • the riders 6 have remained unchanged in their position.
  • the severing of the outer layers has the consequence that a web start is formed at a position indicated by an arrow 17.
  • This web start 18 depends together with the front end 16 of the outer layers down.
  • the rear end 15 of the outer layers also hangs down and protrudes into the pulper opening 13. Since after cutting the outer layers, the rear end tends to overshoot, the raised side wall 14 is provided, which ensures that the rear end 15 actually hits the pulper opening 13. Of course you can also provide a pulper opening on the front side. This is not shown here. An additional opening, however, increases the cost. It is also possible to provide the pulper opening not at the rear end, but at the front end. However, the arrangement of the pulper opening 13 at the rear end has the advantage that it disturbs less here.
  • Fig. 3 now the next step is planned.
  • the drive 10 rotates the material web roll 3 counter to its withdrawal direction, ie in the direction of an arrow 19.
  • the rear end 15 of the outer layers passes further into the pulper.
  • the free hanging weight of the rear end 15 will be so large that the entire separated outer layers from the periphery of the web roll 3 slide down and fall into the pulper opening 13.
  • the angle of rotation required for this depends, among other things, on how smooth the material web is, ie, what frictional resistance the outer layers have on the circumference of the material web roll 3.
  • the angle of rotation by which the material web roll 3 is rotated is determined by means of the rotation angle sensor 11. Since the position of the knife 8, the original position of the web start 18 is known, the current position of the web start 18 is now known with the help of the determined by the rotation angle sensor 11 data on the rotation angle.
  • FIG. 4 Now, the web roll 3 has been rotated back in the direction of arrow 20, so that the web 2 from the front end of the web roll 3 hanging freely.
  • the rotation angle has been detected again via the rotation angle sensor.
  • the rotation is performed by the drive 10. This makes it possible to determine the position of the web start 18 relatively accurately.
  • a gripping device 21 shown only schematically can detect the web beginning and the material web 2, as in Fig. 5 is shown, lead through a web treatment device 22 shown only schematically.
  • Fig. 6 now shows the cross-cutting device 7 from the side.
  • the cross-cutting device 7 has, as a separating element, the knife 8, the here is designed as a rotating circular blade.
  • the knife 8 is attached to a lever 23 which is pivotable on a carriage 24.
  • the carriage 24 is movable on a linear guide 25 parallel to the axis 26 of the material web roll 3.
  • the lever 23 is pivoted by a drive 27, for example a pneumatic cylinder, in the direction of the material web roll 3.
  • a surface sensor 28 is provided to determine the position of the surface 29 of the web roll 3.
  • the drive 27 is now operated in response to the signal from the surface sensor 28 so that the knife 8 penetrates by a predetermined distance in the surface. This distance corresponds to the thickness of the material web 2 or, if several material web layers are to be severed, a multiple of this thickness. This cutting depth can be set relatively accurately.
  • the cross-cutting device 7 is arranged at the lowest point of the material web roll 3. This has the advantage that immediately after the separation substantially equilibrium between the front end 15 and the rear end 16 of the separated material web layers exists. This in turn has the consequence that when cutting virtually no weight-related train on the two ends 15, 16 is exercised. The separation can therefore be largely unaffected by external forces on the material web layers. Due to the fact that the material web layer or the material web layers but with a certain friction on the lower-lying peripheral layers of Material web roll 3 rest, you can change the position of the cross-cutting device 7 also. In general, it will be sufficient to position them in the lower third of the web roll 3 (with respect to the direction of gravity).

Landscapes

  • Replacement Of Web Rolls (AREA)

Claims (12)

  1. Procédé pour dérouler une bande de matériau d'un rouleau de bande de matériau, dans lequel on saisit un début de bande de la bande de matériau et on l'écarte du rouleau de bande de matériau, dans lequel on produit le début de bande en coupant au moins la couche externe de la bande de matériau dans le tiers inférieur dans la direction de la force de gravité et en enlevant le reste séparé reposant sur le rouleau de bande de matériau, dans lequel on fait tourner le rouleau de bande de matériau pour enlever le reste séparé, jusqu'à ce que le reste glisse du rouleau de bande de matériau, caractérisé en ce que l'on détermine l'angle de rotation et on l'utilise en combinaison avec la position de la coupe pour la détermination de la position du début de bande.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on fait tourner en arrière le rouleau de bande de matériau dans une mesure prédéterminée, jusqu'à ce que le début de bande pende librement vers le bas sur une longueur prédéterminée.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on fait tourner le rouleau de bande de matériau avec son sommet à l'opposé du sens de prélèvement.
  4. Procédé selon l'une quelconque de revendications 1 à 3, caractérisé en ce que l'on utilise pour la coupe un dispositif de coupe transversal, qui est guidé dans un guide s'étendant parallèlement à l'axe du rouleau de bande de matériau.
  5. Procédé selon la revendication 4, caractérisé en ce que l'on utilise un dispositif de coupe transversal avec un détecteur de surface et un élément de coupe, qui est saillant d'une distance prédéterminée au-dessus de la surface du rouleau de bande de matériau déterminée par le détecteur de surface.
  6. Dispositif pour dérouler une bande de matériau d'un rouleau de bande de matériau avec un dispositif de paliers dans lequel le rouleau de bande de matériau est supporté de manière rotative, dans lequel un dispositif de coupe transversal (7) est disposé dans une région située en dessous du dispositif de paliers (5) dans la direction de la force de gravité, avec lequel on peut couper au moins la couche externe de la bande de matériau (2) enroulée sur le rouleau de bande de matériau (3), dans le tiers inférieur dans la direction de la force de gravité, dans lequel le dispositif de paliers (5) présente un entraînement de rouleau (10), avec lequel le rouleau de bande de matériau (3) peut tourner à l'opposé de son sens d'enroulement, caractérisé en ce qu'il est prévu un détecteur d'angle de rotation (11), qui détecte la rotation du rouleau de bande de matériau (3).
  7. Dispositif selon la revendication 6, caractérisé en ce qu'une ouverture de triturateur (13) est disposée sur le côté du rouleau de bande de matériau (3) opposé au côté de prélèvement.
  8. Dispositif selon l'une des revendications 6 ou 7, caractérisé en ce que le dispositif de coupe transversal (7) est guidé dans un guide (25) s'étendant parallèlement à l'axe (26) du rouleau de bande de matériau (3).
  9. Dispositif selon l'une quelconque des revendications 6 à 8, caractérisé en ce que le dispositif de coupe transversal (7) présente un détecteur de surface (28), qui détermine la position de la surface (29) du rouleau de bande de matériau (3), et un élément de coupe (8), qui peut être positionné par un entraînement (27) de telle manière qu'il plonge d'une distance prédéterminée dans la surface (29) du rouleau de bande de matériau (3).
  10. Dispositif selon la revendication 9, caractérisé en ce que l'élément de coupe (8) présente un couteau rotatif.
  11. Dispositif selon la revendication 9, caractérisé en ce que l'élément de coupe (8) présente un coin.
  12. Dispositif selon l'une quelconque des revendications 6 à 11, caractérisé en ce que le dispositif de paliers (5) et le dispositif de coupe transversal (7) sont disposés dans une position de préparation du dispositif (1).
EP20050112104 2005-02-05 2005-12-14 Méthode et dispositif pour dérouler une bande de matériau d' un rouleau de matériau Not-in-force EP1688379B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510005371 DE102005005371A1 (de) 2005-02-05 2005-02-05 Verfahren und Vorrichtung zum Abwickeln einer Materialbahn von einer Materialbahnrolle

Publications (3)

Publication Number Publication Date
EP1688379A2 EP1688379A2 (fr) 2006-08-09
EP1688379A3 EP1688379A3 (fr) 2007-08-01
EP1688379B1 true EP1688379B1 (fr) 2011-06-01

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Application Number Title Priority Date Filing Date
EP20050112104 Not-in-force EP1688379B1 (fr) 2005-02-05 2005-12-14 Méthode et dispositif pour dérouler une bande de matériau d' un rouleau de matériau

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EP (1) EP1688379B1 (fr)
DE (1) DE102005005371A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007004374A1 (de) 2007-01-29 2008-07-31 Voith Patent Gmbh Verfahren zum Abschwarten eines Wickels einer Materialbahn von einem Wickeltambour und Einrichtung zur Durchführung des Verfahrens
DE102019201601A1 (de) * 2019-02-07 2020-08-13 Bhs Intralogistics Gmbh Materialrollen-Vorbereitungsanordnung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215355A1 (de) * 1981-05-13 1982-12-02 Hauni-Werke Körber & Co KG, 2050 Hamburg Papierlagentrennvorrichtung
JPH0125600Y2 (fr) * 1985-01-28 1989-07-31
DE8502204U1 (de) * 1985-01-29 1988-12-01 Niepmann Traylift Transportsysteme GmbH & Co KG, 5820 Gevelsberg Vorrichtung zum Erfassen und Lösen des Anfangs einer Bobine
US4984750A (en) * 1988-07-01 1991-01-15 Tokyo Automatic Machinery Works Ltd. Method and apparatus for replacing web-like material in a web-like material supplying device
JPH03115044A (ja) * 1989-09-29 1991-05-16 Mitsubishi Heavy Ind Ltd 巻取紙自動仕立装置
DE4139586C2 (de) * 1991-11-30 1995-04-27 Roland Man Druckmasch Verfahren und Vorrichtung zum Bilden und Erfassen eines Bahnanfanges einer Ersatz-Wickelrolle
DE69430064T2 (de) * 1994-12-12 2002-10-10 Philip Morris Products S.A., Neuchatel Verfahren und Vorrichtung zum Vorbereiten des Öffnens eines Bahnwickels
DE19710657A1 (de) * 1997-03-14 1998-09-17 Focke & Co Verfahren und Vorrichtung zum Handhaben von Bobinen
DE19804614A1 (de) * 1998-02-06 1999-08-12 Focke & Co Verfahren und Vorrichtung zum Verbinden von Materialbahnen

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EP1688379A3 (fr) 2007-08-01
DE102005005371A1 (de) 2006-08-10
EP1688379A2 (fr) 2006-08-09

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