EP3880591B1 - Winding method - Google Patents

Winding method Download PDF

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Publication number
EP3880591B1
EP3880591B1 EP19791203.3A EP19791203A EP3880591B1 EP 3880591 B1 EP3880591 B1 EP 3880591B1 EP 19791203 A EP19791203 A EP 19791203A EP 3880591 B1 EP3880591 B1 EP 3880591B1
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EP
European Patent Office
Prior art keywords
winding
web
material web
winding roller
new
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EP19791203.3A
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German (de)
French (fr)
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EP3880591A1 (en
Inventor
Ewald Wetschenbacher
Malte Müller
Matthias Wohlfahrt
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP3880591A1 publication Critical patent/EP3880591A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound 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
    • 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
    • B65H2301/4141—Preparing winding process
    • B65H2301/41414—Preparing winding process involving pulper or doctor blade or air knife
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/4187—Relative movement of core or web roll in respect of mandrel
    • B65H2301/4189—Cutting
    • B65H2301/41898—Cutting threading tail and leading it to new core
    • 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
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/23—Winding machines
    • B65H2408/236—Pope-winders with first winding on an arc of circle and secondary winding along rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Definitions

  • the invention relates to a method for winding up a running material web, in particular a paper, cardboard, tissue or other fibrous web, in which the material web is wound up successively onto several winding cores to form winding rolls, wherein the material web is guided over a peripheral region of a winding roller which forms a winding gap with the winding roll to be formed.
  • Such a method and such a winding machine are known, for example, from the European patent specification EP 0 483 092 B1 or from the international patent application WO 98/52858 A1 They are used at the end of a machine used to manufacture or finish a web of material. They can also be used to rewind a wound roll that has already been wound.
  • the machine in question can be a paper or cardboard machine, for example.
  • the moving material web is wound continuously, i.e. without interruption, onto several winding cores to form winding rolls.
  • both good material and, as a rule, unsaleable reject material are wound.
  • unsaleable reject material has been wound onto a winding core, it is usually removed by stripping it off the winding roll, by cutting it out on a subsequent rewinder or by sorting it out in a subsequent manufacturing or finishing step, for example using a cross cutter.
  • the winding process can be interrupted by cutting off the unsaleable material web in a drying section upstream of the winding machine in the running direction of the material web and discharging it into a pulper, for example.
  • This known method thus prevents the winding of waste material.
  • an interruption of the Winding process when at least one desired quality characteristic is achieved again, entails a strip threading process that is not simple in terms of process technology and a loss of time and production output.
  • the term "quality property” is understood to mean any property of the material web, such as the basis weight, the fiber orientation, the tear length ratio, the opacity, the surface roughness, the cross-sectional shrinkage profile, the dry content, the composition, etc.
  • the object of the invention is therefore to enable a change in the quality properties of the material web with as little effort and loss as possible.
  • the material web that is of a reject quality is therefore neither cut off in a section of the winding machine upstream of the winding machine in the direction of travel of the material web, for example the drying section, nor wound onto the winding core to form a winding roll. Instead, it is discharged web-wide and disposed of without any interruption to production.
  • the direct discharge preferably takes place into a pulper arranged below the winding gap, the indirect discharge can take place, for example, via a conveyor into a pulper arranged at a distance.
  • the method according to the invention can be automated and can be terminated with the complete transfer of the removed material web to the new winding core.
  • the method according to the invention for winding up a running material web thus allows a targeted interruption of the winding process when a material web of a reject quality is present and a targeted continuation of the usual winding process after at least one desired quality property has been achieved in the material web.
  • a further feature for carrying out the method according to the invention can also be the non-fulfillment or renewed fulfillment of a production feature of the material web, such as the web speed, the web width, the production quantity, etc.
  • the new winding core can be pressed against the winding roller before or during the first separation of the material web or only after the material web has been cut and fed into the pulper along the width of the web, but must be pressed against the winding roller at the latest before the material web is transferred to the new winding core.
  • the web tip of this first web beginning should be located in an end area of the winding core and the gap between the new winding core and the winding roller in this end area should be open on one side at least until this web beginning is safely guided into the pulper.
  • the material web is separated by means of one or more beams with a high energy density, in particular water or laser beams, directed at the cutting area.
  • the separation of the material web begins with the formation of a web tip and then continues with the formation of a web strip that becomes web-wide.
  • the cutting area is preferably located in the wrapping area of the winding roller, as this supports the material web during cutting.
  • the cutting area is located in front of the winding roller, preferably up to a maximum of 3 m and in particular up to a maximum of 0.1 m in front of the winding roller.
  • the tip of the material web strip is arranged on the drive side or on the guide side or in the middle of the material web. In the preferred design, it will be arranged on the side on which the transfer strip arranged upstream in the winding machine is already arranged. This is usually on the guide side.
  • the already wound winding core can advantageously be moved away from the winding roller into a winding end position before or during the first separation of the material web, forming a free pull of the material web, and can be braked to a standstill there after the material web has been transferred across the width of the web (to the new winding core).
  • the web tension should be increased after the wound winding core has been removed via one or more guide and/or spreader rollers arranged in front of the winding roller, by each of these leading slightly.
  • the already wound winding core is kept onto the new winding roll remains in contact with the winding roller.
  • the web tip of this first web beginning should be located in an end area of the winding core and the gap between the already wound winding core and the winding roller should be open on one side in this end area at least until this web beginning is safely guided into the pulper.
  • the winding machines described below are generally suitable for winding up a running material web 1.
  • the winding machine can be arranged at the end of a machine for producing or finishing a running material web 1 in order to wind up the finished and running material web 1 into a winding roll 4.
  • the winding machine can also be used to rewind finished winding rolls 4. Purely as an example, it is assumed that this is a winding machine for winding up a continuous fibrous web, in particular a paper or cardboard web.
  • the running material web 1 is wound up one after the other onto several winding cores 2, 3, in particular reels, to form winding rolls 4.
  • the material web 1 to be wound up is guided over a peripheral area of a stationary or preferably movably mounted winding roller 6, in particular a carrier drum.
  • the winding roller 6 forms a winding gap 8 with the winding roll 4 to be formed.
  • a quality measuring device determines that at least one desired quality property of the material web 1 is no longer present, the material web 1 is severed before the winding gap 8 and this first, new web beginning after the winding gap 8 is guided by the winding roller 6 into a pulper 7.
  • a scraper 5 is assigned to the latter.
  • the material web 1 is The winding gap 8 is cut again and the resulting second, new web beginning is wound onto a new winding core 3.
  • both separation processes are carried out by the same separation device 9.
  • the separation device 9 comprises one or more jets with a high energy density, in particular one or more water jets, which are directed onto the material web 1 in the cutting area.
  • Cutting on the winding roller 6 according to Figure 2 and 3 is very safe and connected to a stable track guidance.
  • the cutting takes place in front of the winding roller 6, preferably at most 0.1 m in front of the winding roller 6.
  • the separation of the material web 1 begins with the formation of a web tip and then continues with the movement of the water jet transversely to the web running direction 11, forming a web strip that becomes web-wide.
  • the web strip can be cut out at an edge of the material web 1 or within the material web 1, in particular in its middle.
  • the water jet of the separating device 9 is moved to the opposite edge of the material web 1 to separate the material web 1.
  • two water jets should be used to form the web tip, which are then moved to a different edge of the material web 1 to widen the web strip and ultimately sever the material web 1.
  • the winding roll 4 i.e. the already wound winding core 2
  • the winding roll 4 remains in contact with the winding roller 6 until the material web 1 is transferred to the new winding roll 3. Accordingly, the first, new web start and the subsequent material web 1 are guided into the pulper 7 through the old winding gap 8 between the winding roller 6 and the winding roll 4 after the material web 1 has been cut for the first time.
  • the web tip of the first web start is on the guide or drive side. Until the first web start is safely guided into the pulper 7, the old winding gap 8 is open on one side in the area of the web tip.
  • the new winding core 3 can be Figure 1 be pressed against the winding roller 6 before or during the first separation of the material web 1. In this case too, in order to prevent the first web tip from running along, the gap between the winding roller 6 and the new winding core 2 in the area of the web tip should be opened on one side until it can be safely continued.
  • the separating device 9 is located in front of the new winding core 3 in the web travel direction 11.
  • the winding roll 4 to be formed is moved away from the winding roller 6 before or during the first separation of the material web 1 when the winding gap 8 is dissolved and when a free tension 10 is formed in the material web 1.
  • a new winding core 3 is brought to the winding roller 6 when a new winding gap 8 is formed.
  • the new winding core 3 is brought to the winding roller 6 when the new winding gap 8 is formed either immediately or at a later time, but at the latest before the material web 1 is transferred to the new winding core 3.
  • the gap between the winding roller 6 and the new winding core 2 in the area of the web tip should be opened on one side until it can be safely continued.
  • the web tension should be increased after the wound winding core 2 has been led away via one or more guide and/or spreader rollers arranged in front of the winding roller 6.
  • the new winding core 3 is removed from a reel magazine (not shown but known to the person skilled in the art) by means of a pair of levers and brought into a waiting position. In this waiting position, the new winding core 3 is pre-accelerated to the peripheral speed of the winding roller 6, preferably by means of at least one center drive (not shown), and then fed to the Winding roller 6 is applied.
  • the invention has created a method with which an unsaleable section of a material web 1 to be wound up can be handled in a simpler and more cost-effective manner with less equipment effort compared to the known methods.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Aufwickeln einer laufenden Materialbahn, insbesondere einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn, bei dem die Materialbahn nacheinander auf mehrere Wickelkerne zu Wickelrollen aufgewickelt wird, wobei die Materialbahn über einen Umfangsbereich einer, mit der zu bildenden Wickelrolle einen Wickelspalt bildenden Wickelwalze geführt wird.The invention relates to a method for winding up a running material web, in particular a paper, cardboard, tissue or other fibrous web, in which the material web is wound up successively onto several winding cores to form winding rolls, wherein the material web is guided over a peripheral region of a winding roller which forms a winding gap with the winding roll to be formed.

Ein solches Verfahren sowie eine derartige Wickelmaschine sind beispielsweise aus der europäischen Patentschrift EP 0 483 092 B1 oder aus der internationalen Patentanmeldung WO 98/52858 A1 hinlänglich bekannt. Sie werden am Ende einer der Herstellung oder Veredelung einer Materialbahn dienenden Maschine eingesetzt. Sie können aber auch dazu dienen, eine bereits fertig gewickelte Wickelrolle umzuwickeln. Bei der betreffenden Maschine kann es sich zum Beispiel um eine Papier- oder Kartonmaschine handeln.Such a method and such a winding machine are known, for example, from the European patent specification EP 0 483 092 B1 or from the international patent application WO 98/52858 A1 They are used at the end of a machine used to manufacture or finish a web of material. They can also be used to rewind a wound roll that has already been wound. The machine in question can be a paper or cardboard machine, for example.

Mit den heute bekannten Verfahren wird die laufende Materialbahn kontinuierlich, das heißt ohne Unterbrechung nacheinander auf mehrere Wickelkerne zu Wickelrollen aufgewickelt. Auf diese Weise wird sowohl Gutmaterial als auch im Regelfall unverkäufliches Ausschussmaterial aufgewickelt. Wurde nun unverkäufliches Ausschussmaterial auf einen Wickelkern aufgewickelt, so wird es üblicherweise durch Abschwarten an der Wickelrolle, durch ein Herausschneiden an einem nachfolgenden Umroller oder durch ein Aussortieren in einem nachfolgenden Herstellungs- oder Veredelungsschritt, beispielsweise mittels eines Querschneiders, entfernt. Diese dargelegten und bekannten Methoden sind sehr aufwands- und zeitintensiv und führen somit zu Zeit- und Produktionsverlusten bei einem finanziellen und vorrichtungsmäßigen Mehraufwand.With the methods known today, the moving material web is wound continuously, i.e. without interruption, onto several winding cores to form winding rolls. In this way, both good material and, as a rule, unsaleable reject material are wound. If unsaleable reject material has been wound onto a winding core, it is usually removed by stripping it off the winding roll, by cutting it out on a subsequent rewinder or by sorting it out in a subsequent manufacturing or finishing step, for example using a cross cutter. These methods described and known are very labor- and time-intensive and therefore lead to time and production losses as well as additional financial and equipment costs.

Alternativ kann auch der Wickelvorgang unterbrochen werden, in dem die unverkäufliche Materialbahn in einer der Wickelmaschine in Laufrichtung der Materialbahn vorgelagerten Trockenpartie abgeschlagen und beispielsweise in einen Pulper abgeführt wird. Somit wird bei dieser bekannten Methode ein Aufwickeln von Ausschussmaterial verhindert. Jedoch zieht eine derartige Unterbrechung des Wickelvorgangs bei einem erneuten Erreichen wenigstens einer gewünschten Qualitätseigenschaft einen prozesstechnisch nicht einfachen Streifenaufführvorgang und einen Zeit- und Produktionsverlust in der Produktion mit sich.Alternatively, the winding process can be interrupted by cutting off the unsaleable material web in a drying section upstream of the winding machine in the running direction of the material web and discharging it into a pulper, for example. This known method thus prevents the winding of waste material. However, such an interruption of the Winding process, when at least one desired quality characteristic is achieved again, entails a strip threading process that is not simple in terms of process technology and a loss of time and production output.

In der DE 10 2007 000 798 wird daher ein Verfahren vorgeschlagen, bei dem der neue Wickelkern nach Wegführung des aufgewickelten Wickelkerns mit der Wickelwalze einen neuen Wickelspalt bildet, ein vor der Wickelwalze angeordnetes Schneidmittel einen Bahnrandstreifen heraustrennt und dieser mittels eines Trennmittels bei Durchlaufen des neuen Wickelspaltes durchtrennt, breitgefahren und abgeführt wird. Dies ist relativ aufwendig.In the EN 10 2007 000 798 A method is therefore proposed in which the new winding core forms a new winding gap with the winding roller after the wound-up winding core has been removed, a cutting means arranged in front of the winding roller cuts out a web edge strip and this is severed, spread out and removed by means of a separating means as it passes through the new winding gap. This is relatively complex.

Unter dem Begriff "Qualitätseigenschaft" ist im Rahmen der vorliegenden Offenbarung jegliche Eigenschaft der Materialbahn, wie beispielsweise das Flächengewicht, die Faserorientierung, das Reißlängenverhältnis, die Opazität, die Oberflächenrauigkeit, das Schrumpfungsquerprofil, der Trockengehalt, die Zusammensetzung, usw., zu verstehen.In the context of the present disclosure, the term "quality property" is understood to mean any property of the material web, such as the basis weight, the fiber orientation, the tear length ratio, the opacity, the surface roughness, the cross-sectional shrinkage profile, the dry content, the composition, etc.

Die Aufgabe der Erfindung ist es daher mit möglichst geringem Aufwand und Verlust eine Änderung der Qualitätseigenschaft der Materialbahn zu ermöglichen.The object of the invention is therefore to enable a change in the quality properties of the material web with as little effort and loss as possible.

Erfindungsgemäß wird die Aufgabe durch den Anspruch 1 gelöst.According to the invention, the object is solved by claim 1.

Mit Vorteil erfolgt das Durchtrennen der Materialbahn in beiden Fällen vor einem bereits existierenden oder noch zu bildendem Spalt zwischen der Wickelwalze und dem neuen Wickelkern.In both cases, it is advantageous to cut the material web in front of a gap that already exists or is yet to be formed between the winding roller and the new winding core.

Die eine Ausschussqualität aufweisende Materialbahn wird also weder in einer der Wickelmaschine in Laufrichtung der Materialbahn vorgelagerten Sektion der Wickelmaschine, beispielsweise der Trockenpartie, abgeschlagen noch auf den Wickelkern zu einer Wickelrolle aufgewickelt. Sie wird vielmehr ohne jegliche Produktionsunterbrechung bahnbreit ausgeschleust und entsorgt.The material web that is of a reject quality is therefore neither cut off in a section of the winding machine upstream of the winding machine in the direction of travel of the material web, for example the drying section, nor wound onto the winding core to form a winding roll. Instead, it is discharged web-wide and disposed of without any interruption to production.

Die unmittelbare Abführung erfolgt vorzugsweise in einen unterhalb des Wickelspalts angeordneten Pulper, die mittelbare Abführung kann beispielsweise über ein Fördermittel in einen entfernt angeordneten Pulper erfolgen.The direct discharge preferably takes place into a pulper arranged below the winding gap, the indirect discharge can take place, for example, via a conveyor into a pulper arranged at a distance.

Weiterhin kann das erfindungsgemäße Verfahren automatisiert ablaufen und mit dem vollständigen Überführen der abgeführten Materialbahn auf den neuen Wickelkern beendet werden.Furthermore, the method according to the invention can be automated and can be terminated with the complete transfer of the removed material web to the new winding core.

Das erfindungsgemäße Verfahren zum Aufwickeln einer laufenden Materialbahn erlaubt also ein gezieltes Unterbrechen des Aufwickelvorgangs bei Vorliegen einer eine Ausschussqualität aufweisenden Materialbahn und ein gezieltes Fortführen des gewöhnlichen Aufwickelvorgangs nach Erreichung wenigstens einer gewünschten Qualitätseigenschaft in der Materialbahn.The method according to the invention for winding up a running material web thus allows a targeted interruption of the winding process when a material web of a reject quality is present and a targeted continuation of the usual winding process after at least one desired quality property has been achieved in the material web.

Ein weiteres Merkmal für die Durchführung des erfindungsgemäßen Verfahrens kann auch die Nichterfüllung bzw. erneute Erfüllung eines Produktionsmerkmals der Materialbahn, wie beispielsweise die Bahngeschwindigkeit, die Bahnbreite, die Produktionsmenge, usw., sein.A further feature for carrying out the method according to the invention can also be the non-fulfillment or renewed fulfillment of a production feature of the material web, such as the web speed, the web width, the production quantity, etc.

Erfindungsgemäß ergibt sich dabei eine wesentliche Vereinfachung der Konstruktion, wenn die Bildung des ersten und des zweiten Bahnanfangs mittels der gleichen Trennvorrichtung erfolgt.According to the invention, a significant simplification of the construction results if the formation of the first and the second web beginning takes place by means of the same separating device.

Der neue Wickelkern kann vor oder während des ersten Trennens der Materialbahn oder erst nach dem Durchtrennen und bahnbreiten Abführen der Materialbahn in den Pulper, muss jedoch spätestens vor der Überführung der Materialbahn auf den neuen Wickelkern gegen die Wickelwalze gedrückt werden.The new winding core can be pressed against the winding roller before or during the first separation of the material web or only after the material web has been cut and fed into the pulper along the width of the web, but must be pressed against the winding roller at the latest before the material web is transferred to the new winding core.

Um bei Kontakt zwischen Wickelwalze und neuem Wickelkern einem Mitlaufen des ersten neuen Bahnanfangs an dem neuen Wickelkern entgegenzuwirken, sollte sich die Bahnspitze diesen ersten Bahnanfangs in einem Endbereich des Wickelkerns befinden und der Spalt zwischen dem neuen Wickelkern und der Wickelwalze in diesem Endbereich zumindest bis zur sicheren Führung dieses Bahnanfangs in den Pulper einseitig geöffnet sein.In order to prevent the first new web beginning from running along the new winding core when there is contact between the winding roller and the new winding core, the web tip of this first web beginning should be located in an end area of the winding core and the gap between the new winding core and the winding roller in this end area should be open on one side at least until this web beginning is safely guided into the pulper.

Im Hinblick auf eine prozesssichere Erzeugung des Materialbahnstreifens erfolgt das Trennen der Materialbahn mittels eines oder mehrerer auf den Schnittbereich gerichteter Strahlen mit einer hohen Energiedichte, insbesondere Wasser- oder Laserstrahlen.In order to ensure a reliable production of the material web strip, the material web is separated by means of one or more beams with a high energy density, in particular water or laser beams, directed at the cutting area.

Dabei beginnt das Trennen der Materialbahn mit der Bildung einer Bahnspitze und setzt sich dann unter Ausbildung eines bahnbreit werdenden Bahnstreifens fort.The separation of the material web begins with the formation of a web tip and then continues with the formation of a web strip that becomes web-wide.

Der Schnittbereich befindet sich mit Vorteil im Umschlingungsbereich der Wickelwalze, da die Materialbahn so beim Schneiden abgestützt wird. Allerdings kann es zur Schonung der Mantelfläche der Wickelwalze ebenso von Vorteil sein, wenn der Schnittbereich vor der Wickelwalze, vorzugsweise bis zu maximal 3 m und insbesondere bis zu höchstens 0,1 m vor der Wickelwalze liegt.The cutting area is preferably located in the wrapping area of the winding roller, as this supports the material web during cutting. However, to protect the outer surface of the winding roller, it can also be advantageous if the cutting area is located in front of the winding roller, preferably up to a maximum of 3 m and in particular up to a maximum of 0.1 m in front of the winding roller.

Je nach Anwendungsfall und Ausgestaltung der Wickelmaschine ist die Bahnspitze des Materialbahnstreifens auf der Triebseite oder auf der Führerseite oder in der Mitte der Materialbahn angeordnet. In bevorzugter Ausführung wird sie auf der Seite angeordnet sein, auf welcher bereits der in der Wickelmaschine vorgeordnete Überführstreifen angeordnet ist. Dies ist im Regelfall auf der Führerseite.Depending on the application and the design of the winding machine, the tip of the material web strip is arranged on the drive side or on the guide side or in the middle of the material web. In the preferred design, it will be arranged on the side on which the transfer strip arranged upstream in the winding machine is already arranged. This is usually on the guide side.

Bei diesem Verfahren erfolgen beide Trennvorgänge ausschließlich vor einem Wickelspalt, was den Aufwand erheblich reduziert und die Vorrichtung vereinfacht.In this process, both separation processes take place exclusively in front of a winding gap, which considerably reduces the effort and simplifies the device.

Der bereits aufgewickelte Wickelkern kann mit Vorteil vor oder während des ersten Trennens der Materialbahn unter Ausbildung eines freien Zuges der Materialbahn von der Wickelwalze in eine Wickelendposition wegbewegt und dort nach erfolgter bahnbreiter Überführung der Materialbahn (auf den neuen Wickelkern) zum Stillstand abgebremst werden.The already wound winding core can advantageously be moved away from the winding roller into a winding end position before or during the first separation of the material web, forming a free pull of the material web, and can be braked to a standstill there after the material web has been transferred across the width of the web (to the new winding core).

Dies schafft einerseits einen gewissen Freiraum für den beabsichtigten Wickelrollenwechsel, andererseits begünstigt eine derartige Wegbewegung und Abbremsung eine sichere Betriebsweise der Wickelmaschine.On the one hand, this creates a certain amount of space for the intended winding roll change, and on the other hand, such movement and braking promotes safe operation of the winding machine.

Um nach dem Wegführen des aufgewickelten Wickelkerns, insbesondere dann wenn auch der neue Wickelkern nicht mit der Wickelwalze in Kontakt steht, eine sichere Bahnführung zu gewährleisten, sollte der Bahnzug nach dem Wegführen des aufgewickelten Wickelkerns über eine oder mehrere, vor der Wickelwalze angeordnete Leit- und/oder Breistreckwalzen erhöht werden, indem diese jeweils geringfügig vorauseilen.In order to ensure safe web guidance after the wound winding core has been removed, especially if the new winding core is not in contact with the winding roller, the web tension should be increased after the wound winding core has been removed via one or more guide and/or spreader rollers arranged in front of the winding roller, by each of these leading slightly.

Alternativ kann es aber im Interesse einer sicheren Bahnführung ebenso vorteilhaft sein, wenn der bereits aufgewickelte Wickelkern bis zum Überführen der Materialbahn auf die neue Wickelrolle mit der Wickelwalze in Kontakt bleibt. Um dabei einem Mitlaufen des ersten neuen Bahnanfangs an dem bereits aufgewickelten Wickelkern entgegenzuwirken, sollte sich die Bahnspitze dieses ersten Bahnanfangs in einem Endbereich des Wickelkerns befinden und der Spalt zwischen dem bereits aufgewickelten Wickelkern und der Wickelwalze in diesem Endbereich zumindest bis zur sicheren Führung dieses Bahnanfangs in den Pulper einseitig geöffnet sein.Alternatively, in the interest of a safe web guidance, it may also be advantageous if the already wound winding core is kept onto the new winding roll remains in contact with the winding roller. In order to prevent the first new web beginning from running along the already wound winding core, the web tip of this first web beginning should be located in an end area of the winding core and the gap between the already wound winding core and the winding roller should be open on one side in this end area at least until this web beginning is safely guided into the pulper.

Nachfolgend soll die Erfindung anhand mehrerer Ausführungsbeispiele näher erläutert werden. Die genannten Merkmale können dabei nicht nur in der dargestellten Kombination vorteilhaft umgesetzt werden, sondern auch einzeln untereinander kombiniert werden. In der beigefügten Zeichnung zeigen die Figuren 1 bis 3 unterschiedliche Wickelanordnungen in schematischer Seitenansicht.The invention will be explained in more detail below using several embodiments. The features mentioned can not only be advantageously implemented in the combination shown, but can also be combined individually with each other. In the attached drawing, the Figures 1 to 3 Different winding arrangements in schematic side view.

Die im Folgenden beschriebenen Wickelmaschinen eignen sich allgemein zum Aufwickeln einer laufenden Materialbahn 1. Die Wickelmaschine kann am Ende einer Maschine zur Herstellung oder Veredelung einer laufenden Materialbahn 1 angeordnet werden, um die fertige und laufende Materialbahn 1 zu einer Wickelrolle 4 aufzuwickeln. Die Wickelmaschine kann aber auch zum Umrollen fertiger Wickelrollen 4 verwendet werden. Rein beispielhaft wird davon ausgegangen, dass es sich hier um eine Wickelmaschine zum Aufwickeln einer fortlaufenden Faserstoffbahn, insbesondere einer Papier- oder Kartonbahn handelt.The winding machines described below are generally suitable for winding up a running material web 1. The winding machine can be arranged at the end of a machine for producing or finishing a running material web 1 in order to wind up the finished and running material web 1 into a winding roll 4. The winding machine can also be used to rewind finished winding rolls 4. Purely as an example, it is assumed that this is a winding machine for winding up a continuous fibrous web, in particular a paper or cardboard web.

In der Wickelmaschine wird die laufende Materialbahn 1 nacheinander auf mehrere Wickelkerne 2,3, insbesondere Tamboure, zu Wickelrollen 4 aufgewickelt. Dabei wird die aufzuwickelnde Materialbahn 1 über einen Umfangsbereich einer ortsfest oder vorzugsweise bewegbar gelagerten Wickelwalze 6, insbesondere Tragtrommel, geführt. Die Wickelwalze 6 bildet hierbei mit der zu bildenden Wickelrolle 4 einen Wickelspalt 8.In the winding machine, the running material web 1 is wound up one after the other onto several winding cores 2, 3, in particular reels, to form winding rolls 4. The material web 1 to be wound up is guided over a peripheral area of a stationary or preferably movably mounted winding roller 6, in particular a carrier drum. The winding roller 6 forms a winding gap 8 with the winding roll 4 to be formed.

Wird nun von einer nicht explizit dargestellten, dem Fachmann jedoch bekannten Qualitätsmesseinrichtung festgestellt, dass wenigstens eine gewünschte Qualitätseigenschaft der Materialbahn 1 nicht mehr gegeben ist, so wird die Materialbahn 1 vor dem Wickelspalt 8 durchtrennt und dieser erste, neue Bahnanfang nach dem Wickelspalt 8 von der Wickelwalze 6 in einen Pulper 7 geführt. Um die Ablösung der Materialbahn 1 von der Wickelwalze 6 zu unterstützen, ist dieser ein Schaber 5 zugeordnet.If a quality measuring device (not explicitly shown but known to the person skilled in the art) determines that at least one desired quality property of the material web 1 is no longer present, the material web 1 is severed before the winding gap 8 and this first, new web beginning after the winding gap 8 is guided by the winding roller 6 into a pulper 7. In order to support the detachment of the material web 1 from the winding roller 6, a scraper 5 is assigned to the latter.

Nach Erreichen der gewünschten Qualitätseigenschaft wird die Materialbahn 1 vor dem Wickelspalt 8 wieder durchtrennt und der dabei entstehende zweite, neue Bahnanfang auf eine neuen Wickelkern 3 aufgewickelt.After achieving the desired quality properties, the material web 1 is The winding gap 8 is cut again and the resulting second, new web beginning is wound onto a new winding core 3.

Beide Trennvorgänge werden erfindungsgemäß von der gleichen Trennvorrichtung 9 vorgenommen. Die Trennvorrichtung 9 umfasst einen oder mehrere Strahlen mit einer hohen Energiedichte, insbesondere einen oder mehrere Wasserstrahlen, die im Schnittbereich auf die Materialbahn 1 gerichtet sind.According to the invention, both separation processes are carried out by the same separation device 9. The separation device 9 comprises one or more jets with a high energy density, in particular one or more water jets, which are directed onto the material web 1 in the cutting area.

Das Schneiden auf der Wickelwalze 6 gemäß Figur 2 und 3 ist sehr sicher und mit einer stabilen Bahnführung verbunden.Cutting on the winding roller 6 according to Figure 2 and 3 is very safe and connected to a stable track guidance.

Allerdings kann es zur Schonung der Mantelfläche der Wickelwalze 6 vorteilhaft sein, wenn wie in Figur 1 gezeigt, das Schneiden vor der Wickelwalze 6, vorzugsweise höchstens 0,1 m vor der Wickelwalze 6 erfolgt.However, to protect the surface of the winding roller 6, it may be advantageous if, as in Figure 1 shown, the cutting takes place in front of the winding roller 6, preferably at most 0.1 m in front of the winding roller 6.

Dabei beginnt das Trennen der Materialbahn 1 mit der Bildung einer Bahnspitze und setzt sich dann mit der Bewegung des Wasserstrahls quer zur Bahnlaufrichtung 11 unter Ausbildung eines bahnbreit werdenden Bahnstreifens fort.The separation of the material web 1 begins with the formation of a web tip and then continues with the movement of the water jet transversely to the web running direction 11, forming a web strip that becomes web-wide.

Der Bahnstreifen kann dabei an einem Rand der Materialbahn 1 oder aber innerhalb der Materialbahn 1, insbesondere in deren Mitte herausgetrennt werden.The web strip can be cut out at an edge of the material web 1 or within the material web 1, in particular in its middle.

Befindet sich der Bahnstreifen am Rand, so wird der Wasserstrahl der Trennvorrichtung 9 zur Trennung der Materialbahn 1 zum gegenüberliegenden Rand der Materialbahn 1 bewegt.If the web strip is located at the edge, the water jet of the separating device 9 is moved to the opposite edge of the material web 1 to separate the material web 1.

Zur Heraustrennung eines Bahnstreifens innerhalb der Materialbahn 1 sollten zwei Wasserstrahlen zur Bildung der Bahnspitze zum Einsatz kommen, die dann zum Verbreitern des Bahnstreifens und letztendlich Durchtrennen der Materialbahn 1 jeweils zu einem anderen Rand der Materialbahn 1 bewegt werden.To separate a web strip within the material web 1, two water jets should be used to form the web tip, which are then moved to a different edge of the material web 1 to widen the web strip and ultimately sever the material web 1.

Bei den in Figur 1 und 2 gezeigten Wickelanordnungen bleibt die Wickelrolle 4, d.h. der bereits aufgewickelte Wickelkern 2 bis zum Überführen der Materialbahn 1 auf die neue Wickelrolle 3 mit der Wickelwalze 6 in Kontakt. Dementsprechend wird der erste, neue Bahnanfang sowie die sich anschließende Materialbahn 1 nach dem erstmaligen Durchtrennen der Materialbahn 1 durch den alten Wickelspalt 8 zwischen der Wickelwalze 6 und der Wickelrolle 4 in den Pulper 7 geführt. Um ein Mitlaufen an der vollen Wickelrolle 4 zu vermeiden, befindet sich die Bahnspitze des ersten Bahnanfangs auf Führer- oder Triebseite. Bis zur sicheren Führung der ersten Bahnanfangs in den Pulper 7 ist der alte Wickelspalt 8 einseitig im Bereich der Bahnspitze geöffnet.In the Figure 1 and 2 In the winding arrangements shown, the winding roll 4, i.e. the already wound winding core 2, remains in contact with the winding roller 6 until the material web 1 is transferred to the new winding roll 3. Accordingly, the first, new web start and the subsequent material web 1 are guided into the pulper 7 through the old winding gap 8 between the winding roller 6 and the winding roll 4 after the material web 1 has been cut for the first time. To avoid running along with the full winding roll 4, the web tip of the first web start is on the guide or drive side. Until the first web start is safely guided into the pulper 7, the old winding gap 8 is open on one side in the area of the web tip.

Der neue Wickelkern 3 kann gemäß Figur 1 bereits vor oder während des ersten Trennens der Materialbahn 1 gegen die Wickelwalze 6 gedrückt werden. Auch hierbei sollte zur Vermeidung eines Mitlaufens der ersten Bahnspitze der Spalt zwischen Wickelwalze 6 und neuem Wickelkern 2 im Bereich der Bahnspitze bis zur sicheren Weiterführung einseitig geöffnet sein.The new winding core 3 can be Figure 1 be pressed against the winding roller 6 before or during the first separation of the material web 1. In this case too, in order to prevent the first web tip from running along, the gap between the winding roller 6 and the new winding core 2 in the area of the web tip should be opened on one side until it can be safely continued.

Alternativ ist es entsprechend Figur 2 aber auch möglich, dass der neue Wickelkern 3 erst nach dem Durchtrennen und bahnbreiten Abführen der Materialbahn 1 in den Pulper 7 gegen die Wickelwalze 6 gedrückt wird.Alternatively, it is Figure 2 but it is also possible that the new winding core 3 is only pressed against the winding roller 6 after the material web 1 has been severed and fed into the pulper 7 across the width of the web.

In beiden Fällen befindet sich die Trennvorrichtung 9 in Bahnlaufrichtung 11 vor dem neuen Wickelkern 3.In both cases, the separating device 9 is located in front of the new winding core 3 in the web travel direction 11.

Bei Figur 3 wird die zu bildende Wickelrolle 4 vor oder während des ersten Trennens der Materialbahn 1 von der Wickelwalze 6 bei Auflösung des Wickelspalts 8 und bei Ausbildung eines freien Zugs 10 in der Materialbahn 1 wegbewegt.At Figure 3 the winding roll 4 to be formed is moved away from the winding roller 6 before or during the first separation of the material web 1 when the winding gap 8 is dissolved and when a free tension 10 is formed in the material web 1.

Zeitgleich oder zeitlich versetzt wird ein neuer Wickelkern 3 an die Wickelwalze 6 bei Ausbildung eines neuen Wickelspalts 8 gebracht. Die Bringung des neuen Wickelkerns 3 an die Wickelwalze 6 bei Ausbildung des neuen Wickelspalts 8 kann entweder unmittelbar oder zu einem späteren Zeitpunkt, jedoch spätestens vor der Überführung der Materialbahn 1 auf den neuen Wickelkern 3 erfolgen.At the same time or at a later time, a new winding core 3 is brought to the winding roller 6 when a new winding gap 8 is formed. The new winding core 3 is brought to the winding roller 6 when the new winding gap 8 is formed either immediately or at a later time, but at the latest before the material web 1 is transferred to the new winding core 3.

Auch hier sollte zur Vermeidung eines Mitlaufens der ersten Bahnspitze der Spalt zwischen Wickelwalze 6 und neuem Wickelkern 2 im Bereich der Bahnspitze bis zur sicheren Weiterführung einseitig geöffnet sein.Here too, in order to prevent the first web tip from running along, the gap between the winding roller 6 and the new winding core 2 in the area of the web tip should be opened on one side until it can be safely continued.

Um auch bei geöffnetem Wickelspalt 8 eine sichere Bahnführung zu gewährleisten, sollte der Bahnzug nach dem Wegführen des aufgewickelten Wickelkerns 2 über eine oder mehrere vor derWickelwalze 6 angeordnete Leit- und/oder Breistreckwalzen erhöht werden.In order to ensure safe web guidance even when the winding gap 8 is open, the web tension should be increased after the wound winding core 2 has been led away via one or more guide and/or spreader rollers arranged in front of the winding roller 6.

Im Allgemeinen wird der neue Wickelkern 3 mittels eines Hebelpaares aus einem nicht dargestellten, dem Fachmann jedoch bekannten Tambourmagazin entnommen und in eine Warteposition gebracht. In dieser Warteposition wird der neue Wickelkern 3 vorzugsweise mittels mindestens eines nicht dargestellten Zentrumsantriebs auf die Umfangsgeschwindigkeit der Wickelwalze 6 vorbeschleunigt und danach an die Wickelwalze 6 angelegt.In general, the new winding core 3 is removed from a reel magazine (not shown but known to the person skilled in the art) by means of a pair of levers and brought into a waiting position. In this waiting position, the new winding core 3 is pre-accelerated to the peripheral speed of the winding roller 6, preferably by means of at least one center drive (not shown), and then fed to the Winding roller 6 is applied.

Zusammenfassend ist festzuhalten, dass durch die Erfindung ein Verfahren geschaffen wurde, mit dem ein unverkäuflicher Abschnitt einer aufzuwickelnden Materialbahn 1 im Vergleich mit den bekannten Methoden auf einfachere und kostengünstigere Weise bei einem geringeren vorrichtungsmäßigen Aufwand gehandhabt werden kann.In summary, it can be stated that the invention has created a method with which an unsaleable section of a material web 1 to be wound up can be handled in a simpler and more cost-effective manner with less equipment effort compared to the known methods.

Claims (10)

  1. Method for winding a running material web (1), in particular a paper, cardboard, tissue or another fibrous material web in the case of which the material web (1) is wound consecutively onto several winding cores (2, 3) to form winding rolls (4), wherein the material web (1) is guided over a circumferential region of a winding roller (6) which forms a winding gap (8) with the winding roll (4) to be formed, wherein the material web (1) severs in the event of a change of a quality property thereof in front of the winding gap (8), this first, new beginning of the web is guided by the winding roller (6) into a pulper (7) and the material web (1) is severed again before reaching the desired quality property in front of the winding gap (8) and the thereby arising second, new beginning of the web is wound onto a new winding core (3), characterized in that
    the formation of the first and second beginning of the web is performed by means of the same separating device (9) .
  2. Method according to Claim 1, characterized in that the separation of the material web (1) is performed by one or more water jets directed onto the cutting region.
  3. Method according to Claim 1 or 2, characterized in that
    the separation of the material web (1) begins with the formation of a web forefront and is performed with the formation of a web strip which becomes wider.
  4. Method according to any one of the preceding claims, characterized in that
    the separation of the material web (1) is performed in the looping region of the winding roller (6).
  5. Method according to any one Claims 1 to 3, characterized in that
    the separation of the material web (1) is performed in front of the winding roller (6), preferably up to a maximum of 3 m and in particular at most 0.1 m in front of the winding roller (6).
  6. Method according to any one of the preceding claims, characterized in that
    the new winding core (3) is pushed against the winding roller (6) only after the severing and web-wide discharge of the material web (1) into the pulper (7).
  7. Method according to any one Claims 1 to 5, characterized in that
    the new winding core (3) is pushed against the winding roller (6) before or during the first separation of the material web (1).
  8. Method according to any one of the preceding claims, characterized in that
    the already wound winding core (2) is moved away from the winding roller (6) before or during the first separation of the material web (1) with the formation of a free draw (10) of the material web (1).
  9. Method according to Claim 8, characterized in that the web tension is increased after the guiding away of the wound winding core (2) over one or more guide and/or spreader rollers arranged in front of the winding roller (6) .
  10. Method according to any one of Claims 1 to 7, characterized in that
    the already wound winding core (2) remains in contact with the winding roller (6) until the material web (1) is transferred to the new winding roll (3).
EP19791203.3A 2018-11-15 2019-10-18 Winding method Active EP3880591B1 (en)

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DE102018128673.2A DE102018128673A1 (en) 2018-11-15 2018-11-15 Winding process
PCT/EP2019/078323 WO2020099061A1 (en) 2018-11-15 2019-10-18 Winding method

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Publication number Priority date Publication date Assignee Title
FI91383C (en) 1990-10-26 1997-01-22 Valmet Paper Machinery Inc Method of winding
WO1998052858A1 (en) 1997-05-16 1998-11-26 Voith Sulzer Papiertechnik Patent Gmbh Method and reeling machine for continuous reeling of a strip of material
DE19907550A1 (en) * 1999-02-22 2000-08-31 Voith Sulzer Papiertech Patent Material web feed method for winding reel holds feed strip of material web against carrier drum before moving winding reel into contact with latter and separation of material web
DE102007000798A1 (en) 2007-09-28 2009-04-02 Voith Patent Gmbh Method for winding a moving material web and winding machine for carrying out the method
DE102012110790B4 (en) * 2012-11-09 2017-04-27 Windmöller & Hölscher Kg Method for determining the winding quality of a film roll

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