EP1612173B1 - Method for transfering a running material web onto a winding core and winding machine - Google Patents

Method for transfering a running material web onto a winding core and winding machine Download PDF

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Publication number
EP1612173B1
EP1612173B1 EP05107461A EP05107461A EP1612173B1 EP 1612173 B1 EP1612173 B1 EP 1612173B1 EP 05107461 A EP05107461 A EP 05107461A EP 05107461 A EP05107461 A EP 05107461A EP 1612173 B1 EP1612173 B1 EP 1612173B1
Authority
EP
European Patent Office
Prior art keywords
transfer strip
winding
material web
initial
separating piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP05107461A
Other languages
German (de)
French (fr)
Other versions
EP1612173B8 (en
EP1612173A1 (en
Inventor
Matthias Wohlfahrt
Zygmunt Madrzak
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
Priority claimed from DE2001161073 external-priority patent/DE10161073A1/en
Priority claimed from DE2001163554 external-priority patent/DE10163554A1/en
Priority claimed from DE10201410A external-priority patent/DE10201410A1/en
Priority claimed from DE10206575A external-priority patent/DE10206575A1/en
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1612173A1 publication Critical patent/EP1612173A1/en
Application granted granted Critical
Publication of EP1612173B1 publication Critical patent/EP1612173B1/en
Publication of EP1612173B8 publication Critical patent/EP1612173B8/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00Changing the web roll
    • B65H19/22Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26Cutting-off the web running to the wound web roll
    • B65H19/262Cutting-off the web running to the wound web roll using a thin or filamentary material which is wound on the new roll
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00Changing the web roll
    • B65H19/22Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26Cutting-off the web running to the wound web roll
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00Changing the web roll
    • B65H19/22Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28Attaching the leading end of the web to the replacement web-roll core or spindle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/414Winding
    • B65H2301/41419Starting winding process
    • B65H2301/41421Starting winding process involving electrostatic means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/417Handling or changing web rolls
    • B65H2301/4187Relative movement of core or web roll in respect of mandrel
    • B65H2301/4189Cutting
    • B65H2301/41896Several cutting devices, e.g. located at different upstream/downstream positions of the web path
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/50Auxiliary process performed during handling process
    • B65H2301/51Modifying a characteristic of handled material
    • B65H2301/515Cutting handled material
    • B65H2301/5153Details of cutting means
    • B65H2301/51535Details of cutting means adhesive tape or tab
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00Specific machines
    • B65H2408/20Specific machines for handling web(s)
    • B65H2408/23Winding machines
    • B65H2408/236Pope-winders with first winding on an arc of circle and secondary winding along rails

Definitions

  • the invention relates to a method for transferring a preferably over a portion of a winding roller material web, in particular a paper or board web, on a forming a nip with the winding roller new winding core, in particular an empty bobbin, preferably in at least one edge region of the web at least one transfer strip is formed by means of at least one before the nip in the direction of the web arranged separating device, preferably a cross-cutting device.
  • the invention also relates to a winding machine for carrying out such a method with at least one separating device, preferably a cross-cutting device.
  • Such methods of transferring a web of material are used, for example, in the area of a reel of a paper or board making machine, a coater, a slitter or an equivalent machine to the web without interrupting the manufacturing process, that is, without switching off the paper or board machine, one after the other on several empty hubs, which are also referred to as empty cores, or to spool the material web, that is, after a demolition of the paper or board web or after starting the paper or board machine to wind on a preferably empty core.
  • German Offenlegungsschrift DE 42 08 746 A1 discloses a method for changing bobbins, in which a material web supplied continuously to a winding roller is transferred to a new bobbin (empty bobbin) that is in contact with the winding roller.
  • a middle part of the material web a so-called transfer strip, cut with two cutting devices at a point which lies above the winding roller in the running direction of the material web.
  • the transfer strip is on the upper side, that is provided on the empty bobbin side facing, by means of a Klebstoffzu fürvoriques with an adhesive medium and adhered to the surface of the empty beater. The transfer operation is completed by the movement of the two cutting devices in the direction of the respective web edge.
  • the adhesive medium has the ability to completely and reliably tear through the transfer strip at the latest when leaving the nip.
  • a disadvantage of this method is the design complexity and the extremely large number of components and groups. Also the temporal synchronization and Reproducibility of the individual process steps represent an uncertainty factor in the transfer of paper webs. The process is also absolutely unsuitable for transferring paper webs with high tensile strength, such as plastic sheets and cardboard.
  • German patent application cited above dispenses with the use of mechanical circular knives, which in practice bring many disadvantages, and instead provides the water jet as a separation medium, with which the material web can be cut both before and directly on the winding roller.
  • US Patent US 5,954,290 A discloses a device for transferring a running paper web to a new winding core. It is envisaged that in a peripheral region of the paper web, a high-strength separating belt, the length of which is a multiple of the material web width, so directly into the nip can be introduced that its beginning connects to the new hub. Thereafter, the separating tape winds spirally on the new hub, wherein it tears the entire web at the same time and transferred to the new hub.
  • US Pat. No. 4,444,362 A discloses a method in which, in principle, no transfer strip is present, since the web start is completely formed by the cross-cutting devices before the winding roller.
  • German patent DE 35 15 519 C2 describes a method in which although a transfer strip is formed, however, its connection to the leading web is already completely separated before the nip.
  • the question also arises as to how the "bound to nothing" web start can reliably be transported to the nip and listed on the new winding core.
  • US Pat. No. 5,810,279 also discloses a method for transferring a moving material web onto a preferably new winding core when a new web start is formed from the running material web having a width.
  • a means used to form the new web start has a smaller width than the width of the material web.
  • the agent causes edge-side joining of the material web to the winding core, wherein the material web is subsequently separated by the action of shearing forces when creating a new web start.
  • German Offenlegungsschrift DE 42 08 746 A1 further discloses a method and a device for changing bobbins, in which a continuously fed to a reeling drum web is wound onto a new bobbin.
  • the following method steps are provided: bring the new spool, which is held with one arm in a waiting position, in contact with the reeling drum; Cutting the middle part of the web with two Cutting devices along two approximately parallel cutting lines in the direction of travel of the web at a location which lies above the reeling drum in the direction of travel of the web; Supplying an adhesive in a region between the cutting lines and adhering the adhesive to a surface of the new coil; and moving the two cutters toward the respective web ends to cut the web into a triangular shape.
  • the object of the present invention is therefore to provide a method and a winding machine of the type mentioned, which allow an optimal transfer of a moving web to a new hub with high process reliability, process efficiency and low investment and process costs and the disadvantages of the prior art Avoid the technique altogether.
  • the method should be applied as possible for all known types of retractors and a wide range of material webs alike.
  • This object is achieved in a method in that at least one initial separating piece is introduced directly or indirectly by means of at least one dispensing device between the at least one transfer strip and the winding roller, that a portion of the introduced initial separation piece is not covered by the transfer strip and not by the material web in that, after reaching the nip formed by the winding roller and the new winding core, the initial separating piece is at least temporarily connected to the new winding core in the uncovered area, and that at least one separation of the transfer strip by the initial separating piece is effected by the new winding core at the latest at the discharge point of the material web and / or made possible, whereby a new web bound to the initial separating piece and the new winding core is formed.
  • the known disadvantages of the prior art are completely avoided.
  • the defined and secure formation of a new, bound web start ensures an absolutely clean winding start, which represents one of the most important prerequisites for an optimal winding structure and a small amount of rejects.
  • the method with only a few process steps achieves the highest reproducibility and associated reliability when transferring running material webs at extremely low investment and process costs.
  • a transfer strip is formed in both edge regions of the material web by means of at least one separating device, preferably a cross-cutting device, which is known from the prior art and arranged in the running direction of the material web in front of the nip, that per transfer strip an initial separating piece between the transfer strip and the winding roller is introduced directly or indirectly by means of a dispensing device such that a portion of each introduced initial separator piece is not covered by the transfer strip, that the initial separator pieces are connected to the new hub after reaching the nips that no later than Expiry point of the material web of the new hub the transfer strips are completely cut through the respective initial separating pieces substantially, whereby each initial separating piece a new, to the Initialtr enngnan scientific and the new hub bound web start is formed and that the width of each transferred to the new hub web start by means of the separator is increased such that the entire web is transferred to the new hub.
  • a separating device preferably a cross-cutting device, which is known from the prior art and arranged in
  • the object is achieved in a winding machine in that by means of at least one dispenser at least one initial separating piece between the at least one transfer strip and the winding roller can be introduced, that thereafter the respective initial separator in its not covered by the transfer strip area after reaching the nip with the new hub is connectable, that the respective transfer strip is severed by the initial separator to form a new, bound to the initial separator and the new core web start and that the width of the at least one new web start by means of the separator is variable such that the entire web on the new hub is convertible.
  • a transfer strip can be formed in each of the two edge regions of the material web by means of at least one separating device arranged in front of the nip in the running direction of the material web, preferably a cross-cutting device, that a respective delivery device be provided for both transfer strips, by means of which at least one initial separating piece between the respective transfer strip and the winding roller can be introduced, that thereafter the respective Initialtrenn demo is connected in its not covered by the transfer strip area after reaching the nip with the new core, that the respective transfer strip through the Initialtrenn sau to form a new , bound to the initial separator and the new hub Web beginning is severable and that the width of the respective new web start by means of the separating device is changed such that the entire web can be transferred to the new hub.
  • FIG. 1 shows a schematic and perspectively illustrated winding machine 1 according to the prior art.
  • a winding machine is well known, for example, from PCT Publication WO 98/52858 A1 (EP 0 912 435 A1, US Pat. No. 6,129,305 A) or the already mentioned documents EP 0 543 788 A1, DE 35 15 519 C2 or US 4,445,646 A.
  • the winding machine 1 comprises a winding roller 2, also referred to as a pressure drum or carrier drum.
  • the material web 3 is led out either from a calender, not shown here, finishing group of a finishing machine or a drying section of a paper or board machine likewise not shown here, then usually wraps around a likewise not shown guide or spreader roll and then runs in the direction of arrow L on the lateral surface 4 of the winding roller 2, wraps around the outer surface 4 of the winding roller 2 by a certain angle (“wrap angle") to between the winding roller 2 and the winding roller 5 existing Nip N1 and finally wound on the winding roll 5.
  • wrap angle a certain angle
  • a new winding core 6 (empty drum) is pre-accelerated by means of a drive device, not shown, and brought into contact with the winding roller 2 to form a nip N2.
  • a drive device not shown
  • at least one separation 7 in at least one edge region 8 is usually mounted in the running material web 3 before or on the winding roller 2 by means of at least one known separating device 9, whereby at least one transfer strip 10 is formed.
  • the transfer strip 10 is severed and transferred to the new winding core 6.
  • Figures 2 to 5 show schematic and perspective views of a winding machine 1 according to a first embodiment of the invention, wherein the structural design including control engineering in principle corresponds to that of the winding machine 1 of Figure 1, whereby a reference to Figure 1 is taken.
  • At least one initial separating piece 11 is introduced between the transfer strips 10 and the winding roller 2 in such a way that an area 11.2 of the introduced initial separating piece 11 is not covered by the transfer strip 10 and not by the material web 3 ,
  • the area covered by the transfer strip 10 is designated by reference numeral 11.3.
  • connection type in addition to the adhesive compound, a Velcro, form-fitting, welding or other connection can be applied.
  • FIG. 3 illustrates that the possibilities for configuring such a connection are not limited to only the region 11.2 of the initial separating piece 11, but also that the new winding core 6 can be configured optimally in accordance with the type of connection.
  • the new winding core 6 can be configured optimally in accordance with the type of connection.
  • one is plastic-bound To see permanent magnets fitted circumferential region 14, which is necessary for a connection by means of magnetic forces.
  • FIG. 4 the new web start defined on the new winding core 6 is explicitly shown during the initial rotation. In addition, it can be seen from FIG. 4 how the width of the transferred web start is increased by means of the separating device 9.
  • FIG. 5 shows an advanced state of the method in which the running material web 3 has been severed almost completely by means of the separating device 9 and transferred to the new winding core 6 to the appropriate extent.
  • FIG. 6 shows an embodiment of the winding machine 1 according to the invention in a schematic side view.
  • the introduction of an initial separating piece 11 between the transfer strips 10 and the winding roller 2 is realized according to the invention by means of one of the discharge devices 12, 12.1 or 12.2 in a direct or indirect way.
  • the dispenser has, for example, the form and function of a paper magazine of a plotter or a printer with multi or single sheet delivery.
  • the merely indicated dispensing device 12 is arranged such that the initial separating piece 11 can be introduced substantially directly between the transfer strip 10 and the winding roller 2.
  • the dispenser 12.1 may be arranged such that the initial separator 11 is initially applied to the bottom of the transfer strip 10 or the web 3 and then by means of the web 3 and / or the transfer strip 10 between the transfer strip 10 and the winding roller 2 can be introduced.
  • This variant offers a good possibility for introducing the initial separating piece 11, in particular in the case of limited space.
  • the dispensing device 12.2 can also be arranged so that the initial separating piece 11 can initially be applied to the lateral surface 4 of the winding roller 2 with temporary connection and then by means of the winding roller 2 between the two Transfer strip 10 and the winding roller 2 can be introduced.
  • the temporary connection can be embodied by means of a vacuum, for example in the form of an adhesive connection a la "post it", or in the case of an evacuated winding roller which has become known from German published patent application DE 198 22 052 A1. It is also possible to provide a suitable dispensing device in the extension of the winding roller 2, as is usually the case with the known sheaves. Each of these variants may be advantageous depending on the guidance of the material web 3, their properties and the characteristics of the winding machine.
  • the separating device 9 can be arranged on the upper side or underside of the material web 3 in front of the nip N2 and at least one Cutting element, preferably a cutting element with a beam of high energy density, in particular a water jet or laser beam cutting element have.
  • FIG. 7 shows a schematized plan view of a winding machine 1 according to an embodiment of the invention.
  • the initial separating piece 11 may be provided with at least one suitable separating agent and / or a separating contour 13, 13.1.
  • FIG. 8 shows a schematic and perspective illustration of a winding machine 1 according to a further embodiment of the invention.
  • two separations 7, 7.1 are applied in both edge regions 8, 8.1 of the material web 3 by means of a known separating device 9, 9.1, in particular a cross-cutting device, whereby two transfer strips 10, 10.1 are formed, that per transfer strip is an initial separating piece 11 , 11.1 between the transfer strips 10, 10.1 and the winding roller 2 is introduced directly or indirectly by means of a respective dispenser not shown such that an area 11.2 of the respectively introduced initial separator 11 from the transfer strip 10, 10.1 of the web 3 is not covered, that the initial separating pieces 11, 11.1 are connected to the new hub 6 after reaching the nip N2 that at the latest at the expiry point Q of the web 3 of the new hub 6, the transfer strips 10, 10.1 through the respective initial separating pieces 11, 11.1 severed be formed, whereby each initial separating piece a new, bound to the initial separator and the new core 6 web start and that the width of each transferred to the new core 6 web start by means of the separator 9, 9.1 in a known manner is increased such that
  • FIG. 9 shows an exemplary embodiment of the initial separating piece 11 according to the invention.
  • the initial separator 11 is formed as a molding of a plastic, a metal, a textile material or a pulp.
  • the initial separator 11 is provided for this connection with means 15, which means may extend over one, several or the entire part of the initial separator 11.
  • hot-melts which have neutral adhesive properties at ambient temperature and become connectable only after reaching a certain temperature
  • a hot-melt laminated initial separator similar to the single-sheet feeder of a commercial printer, easily and reliably fed from a supply cassette of the actual dispenser and the desired adhesive properties for later Time to be activated by heat.
  • a suitable, reactive hot-melt also a temporary, at least for the duration of an initial rotation existing connection between the Initialtrenn Cambodia and the new hub can be made. Comparable benefits can be achieved through the use of encapsulated adhesives that are activated only by applying a certain pressure.
  • connection can also be designed as a form-locking connection, in particular a Velcro connection, as a welded connection, in particular a thermal welding connection, or as a magnetic connection, so that the initial separating piece is connected to the new winding core and its Can fulfill tasks.
  • the task of the initial separator is, inter alia, in the separation of the transfer strip and can be carried out in a variety of webs by means of a designed as a separating contour 13 edge.
  • a new web beginning bound to the initial separating piece 11 and the new winding core can be formed by separating the transfer strip enclosed between the new winding core and the initial separating piece 11 substantially completely by tearing along the separating contour 13 by the initial separating piece 11.
  • the corresponding edge can be formed under an angle matched to the tear behavior of the material web. Due to the process of the new web start between the new hub and the initial separator 11 is included and thus already tied to this.
  • the initial separator 11 are also provided with suitable means, not shown here, with which a temporary connection between the initial separator and the winding roller is produced when the initial separator is introduced indirectly by means of a dispenser between the transfer strip and the winding roller.
  • FIG. 9 shows the area 11.2 not covered by the transfer strip and the area 11.3 of the initial separating piece 11 covered by the transfer strip, whereby a clear association with the other figures is to be achieved.
  • FIG. 10 shows a further embodiment of the initial separating piece 11 according to the invention.
  • the initial separator 11 is formed from an extremely thin material.
  • the initial separating piece 11 is mounted on at least one carrier 16 by means of a relatively easily releasable connection prior to introduction between the transfer strip, not shown, which is bound to form a new, to the initial separating piece 11 and the new hub Bahnsweepings, with the new hub is not carried.
  • the advantage of an initial separating piece 11 designed as a composite object consists in the almost unlimited design freedom of its physical and mechanical properties.
  • the material thickness D can now be reduced without regard to the rigidity of the initial separating piece associated therewith, since the rigidity required for process reasons can be achieved by the carrier 16.
  • the carrier 16 can be formed so that the introduction of the initial separator 11 between the transfer strip and the winding roller by means of a dispenser can be automated and performed absolutely reliable.
  • FIG. 11 shows a further advantage of an initial separating piece 11 designed as a composite object.
  • the initial separator 11 can be configured with means 13.1 for separating the transfer strip, with which the new web start by punching, cutting, pressing or embossing or by a combination thereof, with the aid of formed in the nip forces or by at least one additionally arranged in front of the nip, not shown auxiliary device, is formed.
  • the heat for separating the transfer strip can also be applied by configuring the initial separating piece 11 with an electrical resistance wire as means 13.1 for separating.
  • FIG. 11 also shows that the relatively easily detachable connection between the initial separating piece and the carrier 16 can be released, for example, as soon as a new web beginning bound to the initial separating piece 11 and the new winding core is formed, as a result of which the carrier 16 is deliberately not involved the new winding core is carried.
  • FIG. 12 shows a diagrammatic side view of a winding machine 1 when a material web 3 is fed onto a new winding core 6 in a state which arises sporadically, for example, after the material web 3 has been torn off.
  • the winding roll is then removed from the winding machine 1 and the web 3 is fed to a collecting container, not shown.
  • the new winding core 6 is not wrapped by the material web 3, the flow point Q of the material web 3 of the new winding core 6 with the Nip N2 formed between the winding roller 2 and the new winding core 6 is identical.
  • FIG. 13 shows a diagrammatic side view of a winding machine 1 during the feeding of a material web 3 onto a new winding core 6 during a roll change. If the winding roll 5, which forms the nip N1 together with the winding roll 2, has reached a predetermined diameter, the material web 3 is listed on the new winding core 6 without interrupting the production process. In this arrangement, the new winding core 6 is not wrapped by the material web 3 and the discharge point Q is identical to the nip N2.
  • FIG 14 which shows a schematic side view of a winding machine 1 of the alternative type when performing a material web 3 on a new winding core 6 during a roll change
  • the new winding core 6 is wrapped by the material web 3, whereby the discharge point Q of the material web 3 of the new winding core 6 with the Nip N2 formed between the winding roller 2 and the new hub 6 is not identical.
  • the invention provides a method and a winding machine of the type mentioned, which allow optimal transfer of a moving web to a new hub with high process reliability, process efficiency and low investment and operating costs and the disadvantages of the prior art Avoid technology altogether.
  • the method can be practically applied to all known types of retractors and for a wide range of webs alike.

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  • Replacement Of Web Rolls (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The method involves feeding an initial separated piece (11) between the at least one transfer strip (10) and the winding roller (2) directly or indirectly by means of a dispenser device so that one part of the separated piece is not covered by the transfer strip (10) or by the material web (3). After reaching the nip formed by the winding roller and new core the separated piece is connected at least temporarily in the uncovered area to the new core (6). Where the material web runs off from the new core the transfer strip is separated by the initial separated piece so that a new web start is formed which is bonded to both the initial separated piece and the new core. Independent claim describes winding machine with dispenser for introducing an initial separated piece which is disposed so that the separated piece can be introduced directly between the transfer strip and winding roller.

Description

Die Erfindung betrifft ein Verfahren zum Überführen einer vorzugsweise über einen Teilbereich einer Wickelwalze laufenden Materialbahn, insbesondere einer Papier- oder Kartonbahn, auf einen mit der Wickelwalze einen Nip bildenden neuen Wickelkern, insbesondere einen Leertambour, wobei vorzugsweise in mindestens einem Randbereich der Materialbahn mindestens ein Überführstreifen mittels mindestens einer vor dem Nip in Laufrichtung der Materialbahn angeordneten Trenneinrichtung, vorzugsweise einer Quertrenneinrichtung, ausgebildet wird.The invention relates to a method for transferring a preferably over a portion of a winding roller material web, in particular a paper or board web, on a forming a nip with the winding roller new winding core, in particular an empty bobbin, preferably in at least one edge region of the web at least one transfer strip is formed by means of at least one before the nip in the direction of the web arranged separating device, preferably a cross-cutting device.

Die Erfindung betrifft außerdem eine Wickelmaschine zur Durchführung eines derartigen Verfahrens mit mindestens einer Trenneinrichtung, vorzugsweise einer Quertrenneinrichtung.The invention also relates to a winding machine for carrying out such a method with at least one separating device, preferably a cross-cutting device.

Derartige Verfahren zur Überführung einer Materialbahn werden beispielsweise im Bereich einer Aufrollvorrichtung einer Maschine zur Papier- oder Kartonherstellung, einer Streichmaschine, einer Rollenschneidmaschine oder einer äquivalenten Maschine angewendet, um die Materialbahn ohne Unterbrechung des Herstellungsprozesses, das heißt ohne Abschalten der Papier- oder Kartonmaschine, nacheinander auf mehrere leere Wickelkerne, die auch als Leertamboure bezeichnet werden, oder um die Materialbahn sporadisch, das heißt nach einem Abriss der Papier- oder Kartonbahn oder nach dem Anfahren der Papier- oder Kartonmaschine, auf einen vorzugsweise leeren Wickelkern aufzuwickeln.Such methods of transferring a web of material are used, for example, in the area of a reel of a paper or board making machine, a coater, a slitter or an equivalent machine to the web without interrupting the manufacturing process, that is, without switching off the paper or board machine, one after the other on several empty hubs, which are also referred to as empty cores, or to spool the material web, that is, after a demolition of the paper or board web or after starting the paper or board machine to wind on a preferably empty core.

Dabei muss dafür gesorgt werden, dass der durch das Trennen der Materialbahn entstehende Bahnanfang dem neuen Wickelkern zugeführt wird, um auf diesem eine neue Wickelrolle zu bilden.It must be ensured that the web start resulting from the separation of the material web is fed to the new winding core in order to form a new winding roll on this.

Aus der deutschen Offenlegungsschrift DE 42 08 746 A1 ist ein Verfahren zum Wechsel von Spulen bekannt, bei welchem eine kontinuierlich zu einer Wickelwalze zugeführte Materialbahn auf eine neue Spule (Leertambour), die mit der Wickelwalze im Kontakt ist, überführt wird.German Offenlegungsschrift DE 42 08 746 A1 discloses a method for changing bobbins, in which a material web supplied continuously to a winding roller is transferred to a new bobbin (empty bobbin) that is in contact with the winding roller.

Dabei wird ein Mittelteil der Materialbahn, ein so genannter Überführstreifen, mit zwei Schneidvorrichtungen an einer Stelle geschnitten, welche oberhalb der Wickelwalze in Laufrichtung der Materialbahn liegt. Der Überführstreifen wird oberseitig, das heißt auf der dem Leertambour zugewandten Seite, mittels einer Klebstoffzuführvorrichtung mit einem Klebemedium versehen und auf der Oberfläche des Leertambours aufgeklebt. Der Überführvorgang wird vollendet durch die Bewegung der beiden Schneideinrichtungen in Richtung des jeweiligen Bahnrands.In this case, a middle part of the material web, a so-called transfer strip, cut with two cutting devices at a point which lies above the winding roller in the running direction of the material web. The transfer strip is on the upper side, that is provided on the empty bobbin side facing, by means of a Klebstoffzuführvorrichtung with an adhesive medium and adhered to the surface of the empty beater. The transfer operation is completed by the movement of the two cutting devices in the direction of the respective web edge.

Bei diesem Verfahren wird also vorausgesetzt, dass das Klebemedium die Fähigkeit aufweist, den Überführstreifen spätestens beim Verlassen des Nips vollständig und zuverlässig durchzureißen.In this method, it is therefore assumed that the adhesive medium has the ability to completely and reliably tear through the transfer strip at the latest when leaving the nip.

Leider findet diese Annahme in der Praxis nur in den seltensten Fällen eine Bestätigung. Dies haben auch die Erfinder der genannten Schrift erkannt und für das Trennen des Überführstreifens (Schneiden der Materialbahn zwischen den Schneidlinien) eine separate Streifentrenneinrichtung vorgeschlagen. Somit wird in dieser Ausführungsform das bereits aus der US-Patentschrift US 4,445,646 A bekannte Verfahren im vollen Umfang benutzt, das um die Zuführung von Klebemedium auf die Oberseite des Überführstreifens erweitert wurde.Unfortunately, this assumption is rarely confirmed in practice. This has also recognized the inventors of the document mentioned and proposed for the separation of the transfer strip (cutting the web between the cutting lines) a separate strip separating device. Thus, in this embodiment, the method already known from US Pat. No. 4,445,646 A is used in its entirety, which has been extended by the supply of adhesive medium to the top of the transfer strip.

Nachteilig an diesem Verfahren sind der konstruktive Aufwand und die überaus große Anzahl an Bauteilen und -gruppen. Auch die zeitliche Synchronisation und Reproduzierbarkeit der einzelnen Verfahrensschritte stellen einen Unsicherheitsfaktor bei der Überführung von Papierbahnen dar. Das Verfahren ist darüber hinaus zum Überführen von Papierbahnen mit hoher Reißfestigkeit, wie beispielsweise Kunststoffbahnen und Karton, absolut nicht geeignet.A disadvantage of this method is the design complexity and the extremely large number of components and groups. Also the temporal synchronization and Reproducibility of the individual process steps represent an uncertainty factor in the transfer of paper webs. The process is also absolutely unsuitable for transferring paper webs with high tensile strength, such as plastic sheets and cardboard.

Die Verwendung von Klebstoffen zum gleichzeitigen Trennen und Überführen des Überführstreifens auf den Leertambour steht auch bei dem aus der PCT-Offenlegungsschrift WO 97/48632 A1 bekannten Verfahren im Vordergrund. Neben dem bereits offenbarten doppelseitigen Klebeband oder -etikett wird hier auch die Verwendung von Klebstoffen in Form von Hot-Melt und dergleichen vorgeschlagen.The use of adhesives for simultaneously separating and transferring the transfer strip onto the empty bobbin is also in the foreground in the process known from PCT Publication WO 97/48632 A1. In addition to the already disclosed double-sided adhesive tape or label, the use of adhesives in the form of hot-melt and the like is also proposed here.

Darüber hinaus ist nicht nur das oberseitige Aufbringen der Klebstoffe auf die Materialbahn, sondern auch das Aufbringen der Klebstoffe auf die Mantelfläche des Leertambours vorgesehen. Dies ist eine weitere Möglichkeit der Klebstoffzuführung, die jedoch keinen entscheidenden Einfluss auf die Steigerung der Zuverlässigkeit des Verfahrens hat.In addition, not only the top-side application of the adhesives on the material web, but also the application of the adhesives is provided on the outer surface of the empty drum. This is another way of adhesive delivery, but it does not have a significant impact on increasing the reliability of the process.

Ein Unterschied gegenüber der eingangs zitierten deutschen Offenlegungsschrift ist hier dagegen in der Anordnung und Auswahl der Schneidvorrichtungen zu finden. Man verzichtet hier auf den Einsatz von mechanischen Kreismessern, die in der Praxis ohnehin viele Nachteile mit sich bringen, und sieht statt dessen den Wasserstrahl als Trennmedium vor, mit dem die Materialbahn sowohl vor wie auch direkt auf der Wickelwalze geschnitten werden kann.On the other hand, a difference to the German patent application cited above can be found in the arrangement and selection of the cutting devices. It dispenses with the use of mechanical circular knives, which in practice bring many disadvantages, and instead provides the water jet as a separation medium, with which the material web can be cut both before and directly on the winding roller.

Die Einschränkung auf das Schneiden der Materialbahn mit Wasserstrahl an einer Stelle, an der diese bereits über einen Teil der Wickelwalze geführt und unterstützt wird, ist aus Prozessgründen nicht zwingend notwendig. Da aber eine Wasserstrahl-Trennvorrichtung vor der Wickelwalze bereits aus der bereits genannten deutschen Offenlegungsschrift DE 42 08 746 A1, insbesondere Spalte 5, Zeile 32, bekannt wurde, ist diese Einschränkung dennoch nachvollziehbar. Auch bei diesem Verfahren ist der Hauptnachteil in der Tatsache zu sehen, dass es zum Überführen von Papierbahnen mit hoher Reißfestigkeit absolut nicht geeignet ist.The restriction to the cutting of the material web with water jet at a point where it is already guided and supported over a part of the winding roller, is not absolutely necessary for process reasons. However, since a water-jet separation device in front of the winding roller has already been known from the aforementioned German patent application DE 42 08 746 A1, in particular column 5, line 32, this limitation is nevertheless comprehensible. Also at The main drawback of this method is the fact that it is absolutely unsuitable for transferring high tear strength paper webs.

Ein anderer Gedanke hinsichtlich der Trennung des Überführstreifens wird in der europäischen Patentanmeldung EP 0 543 788 A1 offenbart. Die separate Streifentrenneinrichtung ist zwar nach dem Nip angeordnet, jedoch im Gegensatz zu den beiden genannten Schriften DE 42 08 746 A1 und US 4,445,646 A nicht auf der Oberseite der Materialbahn. Das Durchtrennen des Überführstreifens, beispielsweise mit einem gegen die Materialbahn und Leertambour gerichteten Luftstrahl, kann bei vielen Materialbahnen nun relativ zuverlässig gestaltet werden. Zur Realisierung dieser Anordnung muss jedoch der Kontakt zwischen der Wickelwalze und der vollen Rolle zumindest kurzzeitig aufgehoben werden, was bei einem kontinuierlichen Wickelprozess einen gravierenden Nachteil darstellt. In den meisten Fällen sind hierzu spezielle Wickelverfahren erforderlich, die unter anderem Zentrumsantriebe und ersatznip-bildende Elemente beinhalten. Derartige Verfahren und Wickelmaschinen werden zum Beispiel in den beiden europäischen Patentschriften EP 0 483 092 B1 und EP 0 788 991 B1, der PCT-Offenlegungsschrift WO 98/52858 A1 und der deutschen Offenlegungsschrift DE 198 07 897 A1 beschrieben. Diese bedingen jedoch höhere Investitions- und Betriebskosten. Zudem können sie aufgrund ihrer Wirkmechanismen zu Beschädigungen an der Oberfläche der Materialbahn führen.Another idea regarding the separation of the transfer strip is disclosed in European Patent Application EP 0 543 788 A1. Although the separate strip separating device is arranged after the nip, but not in contrast to the two cited documents DE 42 08 746 A1 and US 4,445,646 A not on the upper side of the material web. The severing of the transfer strip, for example, with a directed against the web and empty bobbin air jet can now be made relatively reliable in many webs. To realize this arrangement, however, the contact between the winding roller and the full roll must be at least temporarily canceled, which represents a serious disadvantage in a continuous winding process. In most cases, this special winding methods are required, which include, among other center drives and Ersatznip-forming elements. Such methods and winding machines are described, for example, in the two European patents EP 0 483 092 B1 and EP 0 788 991 B1, PCT Publication WO 98/52858 A1 and German Laid-Open Patent DE 198 07 897 A1. However, these require higher investment and operating costs. In addition, they can cause damage to the surface of the material web due to their mechanisms of action.

Ein weiterer Nachteil dieser Verfahren stellt die eher zufällige Überführung des Bahnanfangs auf den Leertambour dar. Es wird zwar das Anblasen mit Luftstrahl offenbart, doch in Wirklichkeit vertraut man dabei auf eine so genannte Selbstaufführung des Bahnanfangs auf den neuen Wickelkern. In der Praxis ist diese Methode nur bedingt einsetzbar: Materialbahnen mit beispielsweise hohen Flächengewicht beziehungsweise Steifigkeit, wie beispielsweise Karton, lassen sich auf diese Art und Weise überhaupt nicht überführen. Außerdem ist durch die fehlende Verbindung zwischen dem Bahnanfang und Leertambour kein sauberer Wickelbeginn gewährleistet.Another disadvantage of this method is the more accidental transfer of the web start on the empty bass drum dar. It is indeed disclosed the blowing with air jet, but in reality one trusts in a so-called self-performance of the web start on the new hub. In practice, this method is of limited use: webs with, for example, high basis weight or stiffness, such as cardboard, can not be transferred in this way at all. In addition, no clean start of winding is guaranteed by the lack of connection between the web start and empty drum.

Weiterhin offenbart auch das US-Patent US 5,954,290 A eine Vorrichtung zum Überführen einer laufenden Papierbahn auf einen neuen Wickelkern. Dabei ist vorgesehen, dass in einem Randbereich der Papierbahn ein hochfestes Trennband, dessen Länge ein Vielfaches der Materialbahnbreite beträgt, derart direkt in den Nip einbringbar ist, dass sein Anfang sich mit dem neuen Wickelkern verbindet. Danach windet sich das Trennband spiralförmig auf den neuen Wickelkern auf, wobei es die gesamte Materialbahn gleichzeitig durchreißt und auf den neuen Wickelkern überführt.Furthermore, US Patent US 5,954,290 A discloses a device for transferring a running paper web to a new winding core. It is envisaged that in a peripheral region of the paper web, a high-strength separating belt, the length of which is a multiple of the material web width, so directly into the nip can be introduced that its beginning connects to the new hub. Thereafter, the separating tape winds spirally on the new hub, wherein it tears the entire web at the same time and transferred to the new hub.

Obwohl dieses seit Jahrzehnten bekannte und insbesondere in der Papierindustrie gebräuchliche Verfahren im Laufe der Zeit ständig verbessert und weiterentwickelt wurde, konnte sein prinzipieller Nachteil bis heute nicht eliminiert werden. Dieser besteht in der Tatsache, dass das nach dem Tambourwechsel auf der Oberfläche des Wickelkerns verbleibende Trennband, dessen Dicke aus Prozessgründen nicht beliebig klein sein darf, stets Druckstellen in der Materialbahn erzeugt, die zur Entstehung einer beachtlichen Ausschussmenge im Kernbereich der Wicklung führen, wodurch die Effizienz des gesamten Herstellungsprozesses stark beeinträchtigt wird. Ein weiterer systembedingter Nachteil dieses Verfahrens ist in dem Zwang zu sehen, dass das Trennband direkt in den Nip eingebracht werden muss, wodurch die Lage des Nips praktisch nicht veränderbar ist. Darüber hinaus stellt das zum Reißen der Materialbahn verwendete Trennband nicht nur potentiell eine große Verletzungs- und Lebensgefahr für das Bedienungspersonal dar. Auch die Frage nach einer umweltgerechten Entsorgung des als Einweg-Produkts verwendeten Trennbands gewinnt zunehmend an Bedeutung.Although this method, which has been known for decades and is used in particular in the paper industry, has been constantly improved and developed over time, its fundamental disadvantage could not be eliminated until today. This consists in the fact that the remaining after the reel change on the surface of the winding core strip, the thickness of which may not be arbitrarily small for process reasons, always creates pressure points in the web, leading to the emergence of a considerable amount of waste in the core region of the winding, causing the Efficiency of the entire manufacturing process is severely impaired. Another system-related disadvantage of this method is seen in the constraint that the separating tape must be introduced directly into the nip, whereby the position of the nip is virtually unchangeable. In addition, the release tape used to rupture the web not only potentially poses a great risk of injury and mortality to the operator. Also, the issue of environmentally sound disposal of the single-use product separation tape is becoming increasingly important.

Aus verschiedenen anderen Publikationen sind noch weitere Verfahren und Vorrichtungen zum Überführen einer laufenden Materialbahn bekannt, die jedoch allesamt mit mehr oder weniger großen Nachteilen behaftet sind.From other publications, other methods and devices for transferring a moving material web are known, but all of which are associated with more or less major disadvantages.

So offenbart beispielsweise die US-Patentschrift US 4,444,362 A ein Verfahren, bei dem im Prinzip gar kein Überführstreifen vorhanden ist, da der Bahnanfang mittels der Quertrenneinrichtungen bereits vor der Wickelwalze vollständig ausgebildet wird.For example, US Pat. No. 4,444,362 A discloses a method in which, in principle, no transfer strip is present, since the web start is completely formed by the cross-cutting devices before the winding roller.

Durch die Anordnung der Quertrenneinrichtungen nach dem Nip ist im Vergleich dazu ein weitaus zuverlässigeres Verfahren entstanden, das ebenfalls auf die Ausbildung von Überführstreifen verzichtet. Dieses aus der europäischen Patentanmeldung EP 0 997 417 A1 bekannte Verfahren kann jedoch ausschließlich an einer Aufrollvorrichtung eingesetzt werden, die mit Zentrumsantrieb und ersatznipbildenden Elementen ausgestattet ist.By arranging the cross-cutting devices after the nip a much more reliable method has been created in comparison, which also dispenses with the formation of transfer strips. However, this method, which is known from European patent application EP 0 997 417 A1, can be used exclusively on a retracting device which is equipped with center drive and replacement nip-forming elements.

Ferner beschreibt die deutsche Patentschrift DE 35 15 519 C2 ein Verfahren, bei dem zwar ein Überführstreifen ausgebildet wird, seine Verbindung zu der vorauslaufenden Bahn jedoch bereits vor dem Nip vollständig getrennt wird. Gleichermaßen wie bei dem US-Patent US 4,444,362 A stellt sich allerdings auch hier die Frage, wie der "an Nichts gebundene" Bahnanfang zuverlässig bis zum Nip transportiert und auf den neuen Wickelkern aufgeführt werden kann?Furthermore, the German patent DE 35 15 519 C2 describes a method in which although a transfer strip is formed, however, its connection to the leading web is already completely separated before the nip. In the same way as in the US Pat. No. 4,444,362 A, however, the question also arises as to how the "bound to nothing" web start can reliably be transported to the nip and listed on the new winding core.

Aus der US-Patentschrift US 5,810,279 ist ferner ein Verfahren zum Überführen einer laufenden Materialbahn auf einen vorzugsweise neuen Wickelkern bei Ausbildung eines neuen Bahnanfangs aus der laufenden und eine Breite aufweisenden Materialbahn bekannt. Ein zur Ausbildung des neuen Bahnanfangs verwendete Mittel weist dabei eine kleinere Breite als die Breite der Materialbahn auf. Das Mittel bewirkt ein randseitiges Verbinden der Materialbahn mit dem Wickelkern, wobei die Materialbahn anschließend unter Einwirkung von Scherkräften bei Erzeugung eines neuen Bahnanfangs bahnbreit getrennt wird.US Pat. No. 5,810,279 also discloses a method for transferring a moving material web onto a preferably new winding core when a new web start is formed from the running material web having a width. A means used to form the new web start has a smaller width than the width of the material web. The agent causes edge-side joining of the material web to the winding core, wherein the material web is subsequently separated by the action of shearing forces when creating a new web start.

Und die deutsche Offenlegungsschrift DE 42 08 746 A1 offenbart ferner ein Verfahren und eine Vorrichtung zum Wechseln von Spulen, bei welchem eine kontinuierlich zu einer Aufrolltrommel zugeführte Bahn auf eine neue Spule aufgewickelt wird. Dabei sind die folgenden Verfahrensschritte vorgesehen: Bringen der neuen Spule, welchem mit einem Arm in einer Warteposition gehalten wird, in Kontakt mit der Aufrolltrommel; Schneiden des Mittelteils der Bahn mit zwei Schneidvorrichtungen entlang zweier ungefähr paralleler Schneidlinien in Laufrichtung der Bahn an einer Stelle, die oberhalb der Aufrolltrommel in Laufrichtung der Bahn liegt; Zuführung eines Klebemittels in einem Bereich zwischen den Schneidlinien und Aufkleben des Klebemittels auf einer Oberfläche der neuen Spule; und Bewegung der zwei Schneideinrichtungen in Richtung der jeweiligen Bahnenden zum Schneiden der Bahn in eine dreieckige Form.And German Offenlegungsschrift DE 42 08 746 A1 further discloses a method and a device for changing bobbins, in which a continuously fed to a reeling drum web is wound onto a new bobbin. In this case, the following method steps are provided: bring the new spool, which is held with one arm in a waiting position, in contact with the reeling drum; Cutting the middle part of the web with two Cutting devices along two approximately parallel cutting lines in the direction of travel of the web at a location which lies above the reeling drum in the direction of travel of the web; Supplying an adhesive in a region between the cutting lines and adhering the adhesive to a surface of the new coil; and moving the two cutters toward the respective web ends to cut the web into a triangular shape.

Die Aufgabe der vorliegenden Erfindung besteht also darin, ein Verfahren und eine Wickelmaschine der eingangs genannten Art zu schaffen, die ein optimales Überführen einer laufenden Materialbahn auf einen neuen Wickelkern bei hoher Prozesssicherheit, Prozesseffizienz und günstigen Investitions- und Verfahrenskosten ermöglichen und die Nachteile des bekannten Stands der Technik gänzlich vermeiden. Darüber hinaus soll das Verfahren möglichst für alle bekannten Arten von Aufrollvorrichtungen und ein breites Spektrum von Materialbahnen gleichermaßen angewendet werden können.The object of the present invention is therefore to provide a method and a winding machine of the type mentioned, which allow an optimal transfer of a moving web to a new hub with high process reliability, process efficiency and low investment and process costs and the disadvantages of the prior art Avoid the technique altogether. In addition, the method should be applied as possible for all known types of retractors and a wide range of material webs alike.

Diese Aufgabe wird erfindungsgemäß bei einem Verfahren dadurch gelöst, dass mindestens ein Initialtrennstück derart zwischen den mindestens einen Überführstreifen und die Wickelwalze direkt oder indirekt mittels mindestens einer Abgabeeinrichtung eingebracht wird, dass ein Bereich des eingebrachten Initialtrennstücks nicht von dem Überführstreifen und nicht von der Materialbahn überdeckt wird, dass das Initialtrennstück nach Erreichen des von der Wickelwalze und dem neuen Wickelkern gebildeten Nips zumindest vorübergehend in dem nicht überdeckten Bereich mit dem neuen Wickelkern verbunden wird, und dass spätestens am Ablaufpunkt der Materialbahn von dem neuen Wickelkern mindestens eine Trennung des Überführstreifens durch das Initialtrennstück bewirkt und/oder ermöglicht wird, wodurch ein neuer, an das Initialtrennstück und den neuen Wickelkern gebundener Bahnanfang gebildet wird.This object is achieved in a method in that at least one initial separating piece is introduced directly or indirectly by means of at least one dispensing device between the at least one transfer strip and the winding roller, that a portion of the introduced initial separation piece is not covered by the transfer strip and not by the material web in that, after reaching the nip formed by the winding roller and the new winding core, the initial separating piece is at least temporarily connected to the new winding core in the uncovered area, and that at least one separation of the transfer strip by the initial separating piece is effected by the new winding core at the latest at the discharge point of the material web and / or made possible, whereby a new web bound to the initial separating piece and the new winding core is formed.

Durch das gezielte Einbringen mindestens eines Initialtrennstücks zwischen den mindestens einen Überführstreifen und die Wickelwalze, welches nach Erreichen des Nips in dem von dem Überführstreifen der Materialbahn nicht überdeckten Bereich mit dem neuen Wickelkern verbunden wird, und das definierte Trennen des Überführstreifens durch das Initialtrennstück unter Ausbildung eines neuen, an das Initialtrennstück und den neuen Wickelkern gebundenen Bahnanfangs werden die bekannten Nachteile des Stands der Technik gänzlich vermieden. Insbesondere wird durch die definierte und sichere Ausbildung eines neuen, gebundenen Bahnanfangs ein absolut sauberer Wickelbeginn gewährleistet, der eine der wichtigsten Voraussetzung für einen optimalen Wickelaufbau und eine geringe Ausschussmenge darstellt. Gleichzeitig wird mit dem nur wenige Verfahrensschritte umfassenden Verfahren die höchste Reproduzierbarkeit und damit verbundene Zuverlässigkeit beim Überführen von laufenden Materialbahnen bei äußerst günstigen Investitions- und Verfahrenskosten erzielt.By the targeted introduction of at least one initial separating piece between the at least one transfer strip and the winding roller, which after reaching the nip in the not covered by the transfer strip of the material web Area is connected to the new hub, and the defined separation of the transfer strip through the Initialtrennstück to form a new, bound to the Initialtrennstück and the new hub web start the known disadvantages of the prior art are completely avoided. In particular, the defined and secure formation of a new, bound web start ensures an absolutely clean winding start, which represents one of the most important prerequisites for an optimal winding structure and a small amount of rejects. At the same time, the method with only a few process steps achieves the highest reproducibility and associated reliability when transferring running material webs at extremely low investment and process costs.

In einer besonderen erfindungsgemäßen Ausgestaltung des Verfahrens ist vorgesehen, dass in beiden Randbereichen der Materialbahn jeweils ein Überführstreifen mittels mindestens einer, nach dem Stand der Technik bekannten und in Laufrichtung der Materialbahn vor dem Nip angeordneten Trenneinrichtung, vorzugsweise einer Quertrenneinrichtung, ausgebildet wird, dass je Überführstreifen ein Initialtrennstück zwischen den Überführstreifen und die Wickelwalze direkt oder indirekt mittels je einer Abgabeeinrichtung derart eingebracht wird, dass ein Bereich des jeweils eingebrachten Initialtrennstücks von dem Überführstreifen nicht überdeckt wird, dass die Initialtrennstücke nach Erreichen des Nips mit dem neuen Wickelkern verbunden werden, dass spätestens am Ablaufpunkt der Materialbahn von dem neuen Wickelkern die Überführstreifen durch die jeweiligen Initialtrennstücke im wesentlichen vollständig durchtrennt werden, wodurch je Initialtrennstück ein neuer, an das Initialtrennstück und den neuen Wickelkern gebundener Bahnanfang gebildet wird und dass die Breite des jeweils auf den neuen Wickelkern überführten Bahnanfangs mittels der Trenneinrichtung derart vergrößert wird, dass die gesamte Materialbahn auf den neuen Wickelkern überführt wird.In a particular embodiment of the method according to the invention, in each case a transfer strip is formed in both edge regions of the material web by means of at least one separating device, preferably a cross-cutting device, which is known from the prior art and arranged in the running direction of the material web in front of the nip, that per transfer strip an initial separating piece between the transfer strip and the winding roller is introduced directly or indirectly by means of a dispensing device such that a portion of each introduced initial separator piece is not covered by the transfer strip, that the initial separator pieces are connected to the new hub after reaching the nips that no later than Expiry point of the material web of the new hub the transfer strips are completely cut through the respective initial separating pieces substantially, whereby each initial separating piece a new, to the Initialtr ennstück and the new hub bound web start is formed and that the width of each transferred to the new hub web start by means of the separator is increased such that the entire web is transferred to the new hub.

Mittels dieser Ausgestaltung wird eine verkürzte Zeitdauer für das Überführen der Materialbahn erreicht, wodurch die dabei zwangsläufig anfallende Ausschussmenge reduziert wird. Durch die am Wickelanfang gegebene Symmetrie wird auch ein im allgemeinen unerwünschter konischer Wickelaufbau vermieden. Darüber hinaus besteht hier die Möglichkeit die Ausbildung der beiden Bahnanfänge zeitlich beispielsweise so zu gestalten, dass der zweite, neue, gebundene Bahnanfang nur dann ausgebildet wird, wenn die Bahnüberführung mittels der Ausbildung des ersten neuen Bahnanfangs nicht erfolgreich durchgeführt wurde.By means of this configuration, a shortened period of time for the transfer of the material web is achieved, whereby thereby inevitably accumulating scrap quantity is reduced. Due to the given at the beginning of winding symmetry and a generally undesirable conical winding structure is avoided. In addition, there is the possibility of the formation of the two web beginnings temporally, for example, to make so that the second, new, bound web start is only formed when the railway overpass was performed successfully by the formation of the first new web start.

Die Aufgabe wird erfindungsgemäß bei einer Wickelmaschine dadurch gelöst, dass mittels mindestens einer Abgabeeinrichtung mindestens ein Initialtrennstück zwischen den mindestens einen Überführstreifen und die Wickelwalze einbringbar ist, dass danach das jeweilige Initialtrennstück in dessen von dem Überführstreifen nicht überdeckten Bereich nach Erreichen des Nips mit dem neuen Wickelkern verbindbar ist, dass der jeweilige Überführstreifen durch das Initialtrennstück unter Ausbildung eines neuen, an das Initialtrennstück und den neuen Wickelkern gebundenen Bahnanfangs durchtrennbar ist und dass die Breite des mindestens einen neuen Bahnanfangs mittels der Trenneinrichtung derart veränderbar ist, dass die gesamte Materialbahn auf den neuen Wickelkern überführbar ist.The object is achieved in a winding machine in that by means of at least one dispenser at least one initial separating piece between the at least one transfer strip and the winding roller can be introduced, that thereafter the respective initial separator in its not covered by the transfer strip area after reaching the nip with the new hub is connectable, that the respective transfer strip is severed by the initial separator to form a new, bound to the initial separator and the new core web start and that the width of the at least one new web start by means of the separator is variable such that the entire web on the new hub is convertible.

Hierbei werden die bereits für das erfindungsgemäße Verfahren angegebenen Vorteile erzielt.In this case, the advantages already stated for the method according to the invention are achieved.

In einer besonderen erfindungsgemäßen Ausgestaltung der Wickelmaschine wird vorgeschlagen, dass in beiden Randbereichen der Materialbahn jeweils ein Überführstreifen mittels mindestens einer vor dem Nip in Laufrichtung der Materialbahn angeordneten Trenneinrichtung, vorzugsweise einer Quertrenneinrichtung, ausgebildet werden kann, dass für beide Überführstreifen jeweils eine Abgabeeinrichtung vorhanden ist, mittels welcher mindestens ein Initialtrennstück zwischen den jeweiligen Überführstreifen und die Wickelwalze einbringbar ist, dass danach das jeweilige Initialtrennstück in dessen von dem Überführstreifen nicht überdeckten Bereich nach Erreichen des Nips mit dem neuen Wickelkern verbindbar ist, dass der jeweilige Überführstreifen durch das Initialtrennstück unter Ausbildung eines neuen, an das Initialtrennstück und den neuen Wickelkern gebundenen Bahnanfangs durchtrennbar ist und dass die Breite des jeweiligen neuen Bahnanfangs mittels der Trenneinrichtung derart veränderbar ist, dass die gesamte Materialbahn auf den neuen Wickelkern überführbar ist.In a particular embodiment of the winding machine according to the invention, it is proposed that a transfer strip can be formed in each of the two edge regions of the material web by means of at least one separating device arranged in front of the nip in the running direction of the material web, preferably a cross-cutting device, that a respective delivery device be provided for both transfer strips, by means of which at least one initial separating piece between the respective transfer strip and the winding roller can be introduced, that thereafter the respective Initialtrennstück is connected in its not covered by the transfer strip area after reaching the nip with the new core, that the respective transfer strip through the Initialtrennstück to form a new , bound to the initial separator and the new hub Web beginning is severable and that the width of the respective new web start by means of the separating device is changed such that the entire web can be transferred to the new hub.

Diese Variante mit zwei Überführstreifen ist insbesondere bei relativ breiten oder dicken Materialbahnen, beispielsweise Kartonbahnen, vorteilhaft. Auf diese Weise wird die Tendenz zur Bildung eines konischen Wickels, der im allgemeinen unerwünscht ist, minimiert. Aufgrund der Tatsache, dass die jeweiligen Trenneinrichtungen und Abgabeeinrichtungen auch voneinander unabhängig zum Überführen der Materialbahn einsetzbar sein können, ist bei dieser Ausgestaltung der Wickelmaschine eine systembedingte Redundanz und daraus resultierend, eine optimale Prozesssicherheit, gegeben.This variant with two transfer strips is particularly advantageous in the case of relatively wide or thick material webs, for example board webs. In this way, the tendency to form a conical coil, which is generally undesirable, is minimized. Due to the fact that the respective separating devices and dispensing devices can also be used independently of one another for transferring the material web, in this embodiment of the winding machine a system-related redundancy and, as a result, optimum process reliability are provided.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele unter Bezugnahme auf die Zeichnung.Further features and advantages of the invention will become apparent from the dependent claims and the following description of preferred embodiments with reference to the drawings.

Es zeigen

Figur 1:
eine schematisierte und perspektivisch dargestellte Wickelmaschine gemäß dem Stand der Technik;
Figuren 2 bis 5:
schematisierte und perspektivische Darstellungen einer Wickelmaschine gemäß einer ersten erfindungsgemäßen Ausführungsform;
Figur 6:
eine erfindungsgemäße Ausführungsform der Wickelmaschine in schematisierter Seitenansicht;
Figur 7:
eine schematisierte Draufsicht auf eine Wickelmaschine gemäß einer erfindungsgemäßen Ausführungsform;
Figur 8:
eine schematisierte und perspektivische Darstellung einer Wickelmaschine gemäß einer weiteren erfindungsgemäßen Ausführungsform;
Figuren 9 bis 11:
schematisierte und perspektivische Darstellungen einer der möglichen Ausführungsformen des erfindungsgemäßen Initialtrennstücks;
Figur 12:
eine schematisierte Seitenansicht einer Wickelmaschine während des Aufführens der Materialbahn auf einen neuen Wickelkern, beispielsweise nach einem Abriss;
Figuren 13 bis 14:
schematisierte Seitenansichten zweier unterschiedlichen Wickelmaschinen während des Aufführens der Materialbahn auf einen neuen Wickelkern während eines Rollenwechsels.
Show it
FIG. 1:
a schematized and shown in perspective winding machine according to the prior art;
FIGS. 2 to 5:
schematic and perspective views of a winding machine according to a first embodiment of the invention;
FIG. 6:
an embodiment of the winding machine according to the invention in a schematic side view;
FIG. 7:
a schematic plan view of a winding machine according to an embodiment of the invention;
FIG. 8:
a schematic and perspective view of a winding machine according to another embodiment of the invention;
FIGS. 9 to 11:
schematic and perspective views of one of the possible embodiments of the initial separating piece according to the invention;
FIG. 12:
a schematic side view of a winding machine while performing the material web on a new winding core, for example, after a demolition;
FIGS. 13 to 14:
schematic side views of two different winding machines while performing the web on a new hub during a roll change.

Einige in der nachfolgenden Beschreibung verwendete Begriffe werden folgendermaßen definiert:

  • Eine Trenneinrichtung ist eine Einrichtung, die mindestens ein Schneidelement aufweist, mit dem mindestens eine Trennung oder Schwächung einer Materialbahn erzielbar ist.
  • Eine Quertrenneinrichtung ist eine Einrichtung, die mindestens ein Schneidelement aufweist, mit dem mindestens eine, in ihrer Position quer zur Laufrichtung einer Materialbahn gesehen, veränderbare Trennung oder Schwächung der Materialbahn erzielbar ist.
  • Ein Nip ist ein Bereich einer Wickelwalze, mit welchem diese einen Einfluss auf eine Wickelrolle oder einen neuen Wickelkern ausüben kann.
  • Ein Nip zwischen der Wickelwalze und dem neuen Wickelkern ist im Sinne dieser Erfindung auch dann gegeben, wenn diese einen zum Herstellen einer Verbindung zwischen einem Initialtrennstück und dem neuen Wickelkern geeigneten Spalt bilden.
  • Eine Initialumdrehung ist die erste Vollumdrehung eines neuen Wickelkerns nach einer erfolgten Verbindung zwischen einem Initialtrennstück und einem neuen Wickelkern.
Some terms used in the following description are defined as follows:
  • A separating device is a device which has at least one cutting element with which at least one separation or weakening of a material web can be achieved.
  • A cross-cutting device is a device which has at least one cutting element with which at least one variable separation or weakening of the material web, as seen in its position transversely to the direction of travel of a material web, can be achieved.
  • A nip is an area of a winding roller with which it can exert an influence on a winding roll or a new winding core.
  • A nip between the winding roller and the new hub is given in the context of this invention, even if they form a gap suitable for establishing a connection between an initial separator and the new hub.
  • An initial rotation is the first full revolution of a new hub after a successful connection between an initial separator and a new hub.

Die Figur 1 zeigt eine schematisierte und perspektivisch dargestellte Wickelmaschine 1 gemäß dem Stand der Technik. Eine derartige Wickelmaschine ist beispielsweise aus der PCT-Offenlegungsschrift WO 98/52858 A1 (≡ EP 0 912 435 A1; US 6,129,305 A) oder den bereits erwähnten Schriften EP 0 543 788 A1, DE 35 15 519 C2 oder US 4,445,646 A hinlänglich bekannt.1 shows a schematic and perspectively illustrated winding machine 1 according to the prior art. Such a winding machine is well known, for example, from PCT Publication WO 98/52858 A1 (EP 0 912 435 A1, US Pat. No. 6,129,305 A) or the already mentioned documents EP 0 543 788 A1, DE 35 15 519 C2 or US 4,445,646 A.

Die Wickelmaschine 1 umfasst unter anderem eine auch als Anpresstrommel oder Tragtrommel bezeichnete Wickelwalze 2. Die Materialbahn 3 wird entweder aus einem hier nicht dargestellten Glättwerk/Kalander, Schlussgruppe einer Veredelungsmaschine oder einer hier ebenfalls nicht dargestellten Trockenpartie einer Papier- oder Kartonmaschine herausgeführt, umschlingt dann meistens eine ebenfalls nicht dargestellte Leit- oder Breitstreckwalze und läuft sodann in Pfeilrichtung L auf der Mantelfläche 4 der Wickelwalze 2 auf, umschlingt die Mantelfläche 4 der Wickelwalze 2 um einen gewissen Winkel ("Umschlingungswinkel") bis zum zwischen der Wickelwalze 2 und der Wickelrolle 5 vorhandenen Nip N1 und wird schließlich auf die Wickelrolle 5 aufgewickelt. Wenn nunmehr die Wickelrolle 5 einen vorbestimmten Durchmesser DW erreicht hat, wird ein neuer Wickelkern 6 (Leertambour) mittels einer nicht dargestellten Antriebseinrichtung vorbeschleunigt und in Kontakt mit der Wickelwalze 2 unter Ausbildung eines Nips N2 gebracht. Danach wird üblicherweise in die laufende Materialbahn 3 vor oder auf der Wickelwalze 2 mindestens eine Trennung 7 in mindestens einem Randbereich 8 mittels mindestens einer bekannten Trenneinrichtung 9 angebracht, wodurch mindestens ein Überführstreifen 10 ausgebildet wird. Zum Überführen der gesamten Materialbahn 3 auf den neuen Wickelkern 6 wird der Überführstreifen 10 durchgetrennt und auf den neuen Wickelkern 6 überführt.Among other things, the winding machine 1 comprises a winding roller 2, also referred to as a pressure drum or carrier drum. The material web 3 is led out either from a calender, not shown here, finishing group of a finishing machine or a drying section of a paper or board machine likewise not shown here, then usually wraps around a likewise not shown guide or spreader roll and then runs in the direction of arrow L on the lateral surface 4 of the winding roller 2, wraps around the outer surface 4 of the winding roller 2 by a certain angle ("wrap angle") to between the winding roller 2 and the winding roller 5 existing Nip N1 and finally wound on the winding roll 5. Now, when the winding roller 5 has reached a predetermined diameter D W , a new winding core 6 (empty drum) is pre-accelerated by means of a drive device, not shown, and brought into contact with the winding roller 2 to form a nip N2. Thereafter, at least one separation 7 in at least one edge region 8 is usually mounted in the running material web 3 before or on the winding roller 2 by means of at least one known separating device 9, whereby at least one transfer strip 10 is formed. For transferring the entire material web 3 to the new winding core 6, the transfer strip 10 is severed and transferred to the new winding core 6.

Viele Varianten eines derartigen Verfahrens zum Überführen einer laufenden Materialbahn unter Ausbildung mindestens eines Überführstreifens sind unter anderem aus den eingangs genannten Schriften bekannt, jedoch bei keiner dieser Varianten ist zum Trennen des Überführstreifens und zum Aufführen des Überführstreifens auf den neuen Wickelkern das Einbringen mindestens eines Elementes auf der der Wickelwalze zugewandten Seite der Materialbahn vorgesehen.Many variants of such a method for transferring a running material web to form at least one transfer strip are known, inter alia, from the documents mentioned above, but in none of these variants is the introduction of at least one element for separating the transfer strip and for feeding the transfer strip onto the new winding core provided the winding roller facing side of the web.

Die Figuren 2 bis 5 zeigen schematisierte und perspektivische Darstellungen einer Wickelmaschine 1 gemäß einer ersten erfindungsgemäßen Ausführungsform, wobei der konstruktive Aufbau samt Regelungstechnik prinzipiell dem der Wickelmaschine 1 der Figur 1 entspricht, womit ein Bezug auf die Figur 1 genommen wird.Figures 2 to 5 show schematic and perspective views of a winding machine 1 according to a first embodiment of the invention, wherein the structural design including control engineering in principle corresponds to that of the winding machine 1 of Figure 1, whereby a reference to Figure 1 is taken.

Erfindungsgemäß ist nun vorgesehen, dass, wie in Figur 2 dargestellt, mindestens ein Initialtrennstück 11 zwischen den Überführstreifen 10 und die Wickelwalze 2 derart eingebracht wird, dass ein Bereich 11.2 des eingebrachten Initialtrennstücks 11 nicht von dem Überführstreifen 10 und nicht von der Materialbahn 3 überdeckt wird. Der von dem Überführstreifen 10 überdeckte Bereich wird mit dem Bezugszeichen 11.3 bezeichnet.According to the invention, it is now provided that, as shown in FIG. 2, at least one initial separating piece 11 is introduced between the transfer strips 10 and the winding roller 2 in such a way that an area 11.2 of the introduced initial separating piece 11 is not covered by the transfer strip 10 and not by the material web 3 , The area covered by the transfer strip 10 is designated by reference numeral 11.3.

Im weiteren Verlauf des Verfahrens wird der von der Wickelwalze 2 und dem neuen Wickelkern 6 gebildete Nip N2 durch das Initialtrennstück 11 erreicht, in welchem das Initialtrennstück 11 in dessen Bereich 11.2 mit dem neuen Wickelkern 6 verbunden wird, wobei als Verbindungsart, neben der Klebstoffverbindung, eine Klettverschluss-, Formschluss-, Schweiß- oder eine andere Verbindung angewendet werden kann.In the further course of the process, the nip N2 formed by the winding roller 2 and the new winding core 6 is reached by the initial separating piece 11, in which the initial separating piece 11 is connected in its region 11.2 to the new winding core 6, wherein as connection type, in addition to the adhesive compound, a Velcro, form-fitting, welding or other connection can be applied.

Die Figur 3 verdeutlicht, dass die Möglichkeiten zur Ausgestaltung einer derartigen Verbindung nicht nur auf den Bereich 11.2 des Initialtrennstücks 11 begrenzt sind, sondern auch der neue Wickelkern 6 entsprechend der Verbindungsart optimal ausgestaltet werden kann. Als Beispiel hierzu ist ein mit kunststoffgebundenen Permanentmagneten bestückter umlaufender Bereich 14 zu sehen, der für eine Verbindung mittels magnetischer Kräfte notwendig ist.FIG. 3 illustrates that the possibilities for configuring such a connection are not limited to only the region 11.2 of the initial separating piece 11, but also that the new winding core 6 can be configured optimally in accordance with the type of connection. As an example, one is plastic-bound To see permanent magnets fitted circumferential region 14, which is necessary for a connection by means of magnetic forces.

Ebenfalls im Bereich des Nips N2, der in den in der Figur 2-5 dargestellten Beispielen mit dem Ablaufpunkt Q der Materialbahn 3 (Figuren 12 bis 15) identisch ist, wird der nun zwischen dem neuen Wickelkern 6 und dem Initialtrennstück 11 eingeschlossene Überführstreifen 10 durch das Initialtrennstück 11 durchtrennt, was zur Bildung eines "neuen Bahnanfangs" führt, wobei mit dem Begriff "neuer Bahnanfang" der im wesentlichen vollständig durchgetrennte und an den neuen Wickelkern und das Initialtrennstück 11 gebundene Überführstreifen 10 bezeichnet wird.Also in the area of the nip N2, which in the examples shown in FIGS. 2-5 is identical to the discharge point Q of the material web 3 (FIGS. 12 to 15), the transfer strip 10 now enclosed between the new winding core 6 and the initial separating piece 11 is passed through the initial separation piece 11 is severed, which leads to the formation of a "new web start", wherein the term "new web start" of essentially completely separated and bound to the new core and the initial separation piece 11 transfer strip 10 is designated.

In der Figur 4 ist der definiert auf den neuen Wickelkern 6 überführte neue Bahnanfang während der Initialumdrehung explizit dargestellt. Darüber hinaus ist aus der Figur 4 ersichtlich, wie die Breite des überführten Bahnanfangs mittels der Trenneinrichtung 9 vergrößert wird.In FIG. 4, the new web start defined on the new winding core 6 is explicitly shown during the initial rotation. In addition, it can be seen from FIG. 4 how the width of the transferred web start is increased by means of the separating device 9.

Die Figur 5 zeigt einen fortgeschrittenen Zustand des Verfahrens, in dem die laufende Materialbahn 3 nahezu vollständig mittels der Trenneinrichtung 9 durchtrennt und im entsprechenden Maße auf den neuen Wickelkern 6 überführt wurde.FIG. 5 shows an advanced state of the method in which the running material web 3 has been severed almost completely by means of the separating device 9 and transferred to the new winding core 6 to the appropriate extent.

Die Figur 6 zeigt eine erfindungsgemäße Ausführungsform der Wickelmaschine 1 in schematisierter Seitenansicht.FIG. 6 shows an embodiment of the winding machine 1 according to the invention in a schematic side view.

Das Einbringen eines Initialtrennstücks 11 zwischen den Überführstreifen 10 und die Wickelwalze 2 wird erfindungsgemäß mittels einer der Abgabeeinrichtungen 12, 12.1 oder 12.2 auf einem direkten oder indirekten Wege realisiert. Die Abgabeeinrichtung weist beispielsweise die Form und die Funktion eines Papiermagazins eines Plotters oder eines Druckers mit Multi- oder Einzelblattabgabe auf.The introduction of an initial separating piece 11 between the transfer strips 10 and the winding roller 2 is realized according to the invention by means of one of the discharge devices 12, 12.1 or 12.2 in a direct or indirect way. The dispenser has, for example, the form and function of a paper magazine of a plotter or a printer with multi or single sheet delivery.

In der bevorzugten Ausführungsform ist vorgesehen, dass die lediglich angedeutete Abgabeeinrichtung 12 derart angeordnet ist, dass das Initialtrennstück 11 im Wesentlichen direkt zwischen den Überführstreifen 10 und die Wickelwalze 2 einbringbar ist. Vorteilhaft bei dieser Anordnung ist neben der einfachen Ausgestaltung der Abgabeeinrichtung 12 und des Initialtrennstücks 11 auch die Geschwindigkeit, mit der das Initialtrennstück 11 einbringbar ist, die um ein Vielfaches geringer als die Materialbahngeschwindigkeit sein kann. Darüber hinaus kann auf eine besondere Führung des Initialtrennstücks 11 gänzlich verzichtet werden, da dieses auf dem Weg zum Nip N2 von dem Überführstreifen 10 und der Wickelwalze 2 ausreichend geführt wird.In the preferred embodiment it is provided that the merely indicated dispensing device 12 is arranged such that the initial separating piece 11 can be introduced substantially directly between the transfer strip 10 and the winding roller 2. An advantage of this arrangement, in addition to the simple design of the dispenser 12 and the initial separator 11 and the speed at which the initial separator 11 can be introduced, which may be lower than the material web speed by a multiple. In addition, can be completely dispensed with a special leadership of the initial separating piece 11, as this is adequately guided on the way to the nip N2 of the transfer strip 10 and the winding roller 2.

Alternativ dazu kann die Abgabeeinrichtung 12.1 derart angeordnet werden, dass das Initialtrennstück 11 zunächst unterseitig auf den Überführstreifen 10 oder die Materialbahn 3 aufbringbar ist und danach mittels der Materialbahn 3 und/oder des Überführstreifens 10 zwischen den Überführstreifen 10 und die Wickelwalze 2 einbringbar ist. Diese Variante bietet insbesondere bei eingeschränkten Platzverhältnissen eine gute Möglichkeit zum Einbringen des Initialtrennstücks 11. Die Abgabeeinrichtung 12.2 kann auch so angeordnet werden, dass das Initialtrennstück 11 zunächst bei temporärer Verbindung auf die Mantelfläche 4 der Wickelwalze 2 aufbringbar ist und danach mittels der Wickelwalze 2 zwischen den Überführstreifen 10 und die Wickelwalze 2 einbringbar ist. Die temporäre Verbindung kann beispielsweise in Form einer Klebeverbindung ä la "Post it", oder bei einer besaugten Wickelwalze, die aus der deutschen Offenlegungsschrift DE 198 22 052 A1 bekannt wurde, mittels Vakuum ausgeführt sein. Außerdem besteht die Möglichkeit, eine geeignete Abgabeeinrichtung in der Verlängerung der Wickelwalze 2 vorzusehen, wie es üblicherweise bei den bekannten Seilscheiben der Fall ist. Jede dieser Varianten kann in Abhängigkeit von der Führung der Materialbahn 3, ihrer Eigenschaften und den Besonderheiten der Wickelmaschine vorteilhaft sein.Alternatively, the dispenser 12.1 may be arranged such that the initial separator 11 is initially applied to the bottom of the transfer strip 10 or the web 3 and then by means of the web 3 and / or the transfer strip 10 between the transfer strip 10 and the winding roller 2 can be introduced. This variant offers a good possibility for introducing the initial separating piece 11, in particular in the case of limited space. The dispensing device 12.2 can also be arranged so that the initial separating piece 11 can initially be applied to the lateral surface 4 of the winding roller 2 with temporary connection and then by means of the winding roller 2 between the two Transfer strip 10 and the winding roller 2 can be introduced. The temporary connection can be embodied by means of a vacuum, for example in the form of an adhesive connection a la "post it", or in the case of an evacuated winding roller which has become known from German published patent application DE 198 22 052 A1. It is also possible to provide a suitable dispensing device in the extension of the winding roller 2, as is usually the case with the known sheaves. Each of these variants may be advantageous depending on the guidance of the material web 3, their properties and the characteristics of the winding machine.

Die Trenneinrichtung 9 kann gemäß dem Stand der Technik oberseitig oder unterseitig der Materialbahn 3 vor dem Nip N2 angeordnet sein und mindestens ein Schneidelement, vorzugsweise ein Schneidelement mit einem Strahl hoher Energiedichte, insbesondere ein Wasserstrahl- oder Laserstrahl-Schneidelement aufweisen. Nachdem keine eindeutig bevorzugte Anordnung der Trenneinrichtung 9 existiert, ergibt sich, wie aus der Figur 6 deutlich erkennbar, eine durchaus große Anzahl von Kombinationsmöglichkeiten in der Anordnung der Abgabeeinrichtung 12, 12.1, 12.2 und der Trenneinrichtung 9 mit der Wickelmaschine 1.According to the prior art, the separating device 9 can be arranged on the upper side or underside of the material web 3 in front of the nip N2 and at least one Cutting element, preferably a cutting element with a beam of high energy density, in particular a water jet or laser beam cutting element have. After no clearly preferred arrangement of the separating device 9 exists, as can be clearly seen from the figure 6, a quite large number of possible combinations in the arrangement of the dispenser 12, 12.1, 12.2 and the separator 9 with the winding machine. 1

Die Figur 7 zeigt eine schematisierte Draufsicht auf eine Wickelmaschine 1 gemäß einer erfindungsgemäßen Ausführungsform.FIG. 7 shows a schematized plan view of a winding machine 1 according to an embodiment of the invention.

Unabhängig davon, ob das Initialtrennstück 11 direkt oder indirekt mittels einer Abgabeeinrichtung zwischen den Überführstreifen 10 und die Wickelwalze 2 eingebracht wird, soll ein Bereich 11.2 des Initialtrennstücks 11 nicht von dem Überführstreifen 10 und nicht von der Materialbahn 3 überdeckt sein. Während dieser Bereich für eine Verbindung zwischen dem Initialtrennstück 11 und dem neuen Wickelkern 6 von Bedeutung ist, wird der von dem Überführstreifen 10 überdeckte Bereich 11.3 des Initialtrennstücks 11 primär zum Trennen des Überführstreifens 10 unter Ausbildung eines neuen Bahnanfangs benutzt. Hierzu kann das Initialtrennstück 11 mit mindestens einem geeigneten Trennmittel und/oder einer Trennkontur 13, 13.1 versehen sein.Regardless of whether the initial separating piece 11 is introduced directly or indirectly by means of a dispensing device between the transfer strip 10 and the winding roller 2, a region 11.2 of the initial separating piece 11 should not be covered by the transfer strip 10 and not by the material web 3. While this area is important for connection between the initial separator 11 and the new hub 6, the area 11.3 of the initial separator 11 covered by the transfer strip 10 is primarily used to separate the transfer strip 10 to form a new web start. For this purpose, the initial separating piece 11 may be provided with at least one suitable separating agent and / or a separating contour 13, 13.1.

Die Figur 8 zeigt eine schematisierte und perspektivische Darstellung einer Wickelmaschine 1 gemäß einer weiteren erfindungsgemäßen Ausführungsform.FIG. 8 shows a schematic and perspective illustration of a winding machine 1 according to a further embodiment of the invention.

Erfindungsgemäß ist nun vorgesehen, dass zwei Trennungen 7, 7.1 in beiden Randbereichen 8, 8.1 der Materialbahn 3 mittels einer bekannten Trenneinrichtung 9, 9.1, insbesondere einer Quertrenneinrichtung, angebracht werden, wodurch zwei Überführstreifen 10, 10.1 ausgebildet werden, dass je Überführstreifen ein Initialtrennstück 11, 11.1 zwischen den Überführstreifen 10, 10.1 und die Wickelwalze 2 direkt oder indirekt mittels je einer nicht dargestellten Abgabeeinrichtung derart eingebracht wird, dass ein Bereich 11.2 des jeweils eingebrachten Initialtrennstücks 11 von dem Überführstreifen 10, 10.1 der Materialbahn 3 nicht überdeckt wird, dass die Initialtrennstücke 11, 11.1 nach Erreichen des Nips N2 mit dem neuen Wickelkern 6 verbunden werden, dass spätestens am Ablaufpunkt Q der Materialbahn 3 von dem neuen Wickelkern 6 die Überführstreifen 10, 10.1 durch die jeweiligen Initialtrennstücke 11, 11.1 durchtrennt werden, wodurch je Initialtrennstück ein neuer, an das Initialtrennstück und den neuen Wickelkern 6 gebundener Bahnanfang gebildet wird und dass die Breite des jeweils auf den neuen Wickelkern 6 überführten Bahnanfangs mittels der Trenneinrichtung 9, 9.1 auf bekannte Weise derart vergrößert wird, dass die gesamte Materialbahn 3 auf den neuen Wickelkern überführt wird.According to the invention, it is now provided that two separations 7, 7.1 are applied in both edge regions 8, 8.1 of the material web 3 by means of a known separating device 9, 9.1, in particular a cross-cutting device, whereby two transfer strips 10, 10.1 are formed, that per transfer strip is an initial separating piece 11 , 11.1 between the transfer strips 10, 10.1 and the winding roller 2 is introduced directly or indirectly by means of a respective dispenser not shown such that an area 11.2 of the respectively introduced initial separator 11 from the transfer strip 10, 10.1 of the web 3 is not covered, that the initial separating pieces 11, 11.1 are connected to the new hub 6 after reaching the nip N2 that at the latest at the expiry point Q of the web 3 of the new hub 6, the transfer strips 10, 10.1 through the respective initial separating pieces 11, 11.1 severed be formed, whereby each initial separating piece a new, bound to the initial separator and the new core 6 web start and that the width of each transferred to the new core 6 web start by means of the separator 9, 9.1 in a known manner is increased such that the entire web 3 is transferred to the new hub.

Aus der Figur 9 ist eine beispielhafte Ausführungsform des erfindungsgemäßen Initialtrennstücks 11 ersichtlich.FIG. 9 shows an exemplary embodiment of the initial separating piece 11 according to the invention.

Im Wesentlichen wird das Initialtrennstück 11, dessen Dicke mit dem Bezugszeichen D bezeichnet wird, als ein Formstück aus einem Kunststoff, einem Metall, einem textilen Werkstoff oder einem Faserstoff ausgebildet. Nachdem das Herstellen einer Verbindung zwischen dem Initialtrennstück 11 und dem neuen Wickelkern zu den wesentlichen Verfahrensschritten gehört, ist das Initialtrennstück 11 für diese Verbindung mit Mittel 15 versehen, wobei diese Mittel sich über ein, mehrere oder den gesamten Teil des Initialtrennstücks 11 erstrecken können. Alleine bei Klebstoffen steht ein praktisch unbegrenztes Spektrum an Mittel zur Verfügung, mit denen eine derartige Verbindung hergestellt werden kann. Unter dem Aspekt der Wiederverwendung der Wickelkerne werden insbesondere mit entfernbaren Klebemitteln, ähnlich Tesa-Powerstrip der Firma Beiersdorf, sehr gute Ergebnisse erzielt. Auch die Verwendung von Hot-Melts, die bei Umgebungstemperatur neutrale Klebeeigenschaften aufweisen und erst nach Erreichen einer bestimmten Temperatur verbindungsfähig werden, ist nicht nur in Hinsicht auf die automatisierte Handhabung und Zuführung der Initialtrennstücke zur Abgabeeinrichtung sehr interessant. So kann beispielsweise ein mit Hot-Melt kaschiertes Initialtrennstück, ähnlich der Einzelblattzufuhr eines handelsüblichen Printers, einfach und zuverlässig von einer Vorratskassette der eigentlichen Abgabeeinrichtung zugeführt und die gewünschten Klebeeigenschaften zum späteren Zeitpunkt durch Wärmezufuhr aktiviert werden. Auf diese Weise kann bei einem geeigneten, reaktiven Hot-Melt auch eine nur vorübergehende, mindestens für die Dauer einer Initialumdrehung bestehende Verbindung zwischen dem Initialtrennstück und dem neuen Wickelkern hergestellt werden. Vergleichbare Vorteile können durch die Verwendung von gekapselten Klebstoffen erreicht werden, die erst durch Ausübung eines bestimmten Druckes aktiviert werden. Die Aufzählung aller in Frage kommenden Verbindungsarten mit detaillierter Beschreibung der sich daraus ergebenden Vorteile ist für diese Erfindung nicht entscheidend und würde mit Sicherheit den Rahmen dieser Schrift sprengen. Aus diesem Grund soll nur noch allgemein darauf hingewiesen werden, dass diese Verbindung auch als Formschlussverbindung, insbesondere eine Klettverschlussverbindung, als Schweißverbindung, insbesondere eine thermische Schweißverbindung, oder als eine magnetische Verbindung ausgestaltet werden kann, damit das Initialtrennstück mit dem neuen Wickelkern verbunden wird und seine Aufgaben erfüllen kann.In essence, the initial separator 11, the thickness of which is denoted by the reference D, is formed as a molding of a plastic, a metal, a textile material or a pulp. After making a connection between the initial separator 11 and the new hub to the essential process steps, the initial separator 11 is provided for this connection with means 15, which means may extend over one, several or the entire part of the initial separator 11. Alone with adhesives there is a virtually unlimited range of agents available to make such a compound. Under the aspect of the reuse of the hubs, very good results are achieved in particular with removable adhesives, similar to Tesa Powerstrip from Beiersdorf. Also, the use of hot-melts, which have neutral adhesive properties at ambient temperature and become connectable only after reaching a certain temperature, is very interesting not only in terms of automated handling and feeding the initial separators to the dispenser. Thus, for example, a hot-melt laminated initial separator, similar to the single-sheet feeder of a commercial printer, easily and reliably fed from a supply cassette of the actual dispenser and the desired adhesive properties for later Time to be activated by heat. In this way, in a suitable, reactive hot-melt also a temporary, at least for the duration of an initial rotation existing connection between the Initialtrennstück and the new hub can be made. Comparable benefits can be achieved through the use of encapsulated adhesives that are activated only by applying a certain pressure. The enumeration of all possible types of connection with a detailed description of the resulting advantages is not critical to this invention and would certainly go beyond the scope of this document. For this reason, it should be pointed out only in general terms that this connection can also be designed as a form-locking connection, in particular a Velcro connection, as a welded connection, in particular a thermal welding connection, or as a magnetic connection, so that the initial separating piece is connected to the new winding core and its Can fulfill tasks.

Die Aufgabe des Initialtrennstücks besteht unter anderem in der Trennung des Überführstreifens und kann bei einer Vielzahl von Materialbahnen mittels einer als Trennkontur 13 ausgebildeten Kante durchgeführt werden. Ein neuer, an das Initialtrennstück 11 und den neuen Wickelkern gebundener Bahnanfang kann gebildet werden, indem der zwischen dem neuen Wickelkern und dem Initialtrennstück 11 eingeschlossene Überführstreifen durch das Initialtrennstück 11 im wesentlichen vollständig durch Reißen entlang der Trennkontur 13 getrennt wird. Um das Reißen progressiv und dadurch zuverlässig zu gestalten, kann die entsprechende Kante unter einem, auf das Reißverhalten der Materialbahn abgestimmten, Winkel ausgebildet werden. Verfahrensbedingt ist der neue Bahnanfang zwischen dem neuen Wickelkern und dem Initialtrennstück 11 eingeschlossen und damit bereits an diese gebunden. Zur Verbesserung der Bindung des neuen Bahnanfangs an das Initialtrennstück 11 kann dieses zusätzlich mit beispielsweise einem adhäsiven Bereich 17 versehen werden, welcher auch zum indirekten Einbringen des Initialtrennstücks zwischen den Überführstreifen und die Wickelwalze mittels einer Abgabeeinrichtung benutzt werden kann. Auf seiner Rückseite kann das Initialtrennstück 11 ebenfalls mit geeigneten, hier nicht dargestellten Mitteln versehen werden, mit denen eine temporäre Verbindung zwischen dem Initialtrennstück und der Wickelwalze hergestellt wird, wenn das Initialtrennstück mittels einer Abgabeeinrichtung indirekt zwischen den Überführstreifen und die Wickelwalze eingebracht wird. Ferner sind in der Figur 9 der von dem Überführstreifen nicht überdeckte Bereich 11.2 sowie der von dem Überführstreifen überdeckte Bereich 11.3 des Initialtrennstücks 11 dargestellt, wodurch eine eindeutige Zuordnung zu den anderen Figuren erreicht werden soll.The task of the initial separator is, inter alia, in the separation of the transfer strip and can be carried out in a variety of webs by means of a designed as a separating contour 13 edge. A new web beginning bound to the initial separating piece 11 and the new winding core can be formed by separating the transfer strip enclosed between the new winding core and the initial separating piece 11 substantially completely by tearing along the separating contour 13 by the initial separating piece 11. To make the tearing progressively and thus reliable, the corresponding edge can be formed under an angle matched to the tear behavior of the material web. Due to the process of the new web start between the new hub and the initial separator 11 is included and thus already tied to this. To improve the binding of the new web start to the initial separator 11 this can be additionally provided with, for example, an adhesive region 17, which can also be used for indirect introduction of the initial separator between the transfer strip and the winding roller by means of a dispenser. On his back can the initial separator 11 are also provided with suitable means, not shown here, with which a temporary connection between the initial separator and the winding roller is produced when the initial separator is introduced indirectly by means of a dispenser between the transfer strip and the winding roller. Furthermore, FIG. 9 shows the area 11.2 not covered by the transfer strip and the area 11.3 of the initial separating piece 11 covered by the transfer strip, whereby a clear association with the other figures is to be achieved.

Die Figur 10 zeigt eine weitere Ausführungsform des erfindungsgemäßen Initialtrennstücks 11.FIG. 10 shows a further embodiment of the initial separating piece 11 according to the invention.

Viele Nachteile des bekannten Stands der Technik werden vermieden, indem das Initialtrennstück 11 aus einem extrem dünnen Material ausgebildet wird. Erfindungsgemäß ist vorgesehen, dass das Initialtrennstück 11 vor dem Einbringen zwischen den nicht dargestellten Überführstreifen und die nicht dargestellte Wickelwalze mittels einer relativ leicht lösbaren Verbindung auf mindestens einem Träger 16 angebracht wird, der nach Ausbildung eines neuen, an das Initialtrennstück 11 und den neuen Wickelkern gebundenen Bahnanfangs, mit dem neuen Wickelkern nicht mitgeführt wird. Der Vorteil eines als Verbundobjekt ausgebildeten Initialtrennstücks 11 besteht in der beinahe unbegrenzten Ausgestaltungsfreiheit seiner physikalischen und mechanischen Eigenschaften. So kann beispielsweise die Materialdicke D nun ohne Rücksicht auf die mit ihr verbundene Steifigkeit des Initialtrennstücks verringert werden, denn die aus Prozessgründen erforderliche Steifigkeit kann durch den Träger 16 erreicht werden. Darüber hinaus kann der Träger 16 so ausgebildet werden, dass das Einbringen des Initialtrennstücks 11 zwischen den Überführstreifen und die Wickelwalze mittels einer Abgabeeinrichtung automatisiert und absolut zuverlässig durchgeführt werden kann.Many disadvantages of the known art are avoided by forming the initial separator 11 from an extremely thin material. According to the invention, the initial separating piece 11 is mounted on at least one carrier 16 by means of a relatively easily releasable connection prior to introduction between the transfer strip, not shown, which is bound to form a new, to the initial separating piece 11 and the new hub Bahnanfangs, with the new hub is not carried. The advantage of an initial separating piece 11 designed as a composite object consists in the almost unlimited design freedom of its physical and mechanical properties. Thus, for example, the material thickness D can now be reduced without regard to the rigidity of the initial separating piece associated therewith, since the rigidity required for process reasons can be achieved by the carrier 16. In addition, the carrier 16 can be formed so that the introduction of the initial separator 11 between the transfer strip and the winding roller by means of a dispenser can be automated and performed absolutely reliable.

In der Figur 11 ist ein weiterer Vorteil eines als Verbundobjekt ausgebildeten Initialtrennstücks 11 dargestellt.FIG. 11 shows a further advantage of an initial separating piece 11 designed as a composite object.

Für einige Anwendungen, insbesondere zum Überführen von Materialbahnen mit hoher Reißfestigkeit, kann das Initialtrennstück 11 erfindungsgemäß mit Mittel 13.1 zum Trennen des Überführstreifens ausgestaltet werden, mit denen der neue Bahnanfang durch Stanzen, Schneiden, Pressen oder Prägen oder durch eine Kombination davon, unter Zuhilfenahme der im Nip herrschenden Kräfte oder durch zumindest eine vor dem Nip zusätzlich angeordnete, nicht dargestellte Hilfseinrichtung, ausgebildet wird. Beim Überführen von Materialbahnen 3, die ein definiertes Schmelzpunktverhalten aufweisen (Kunststoffbahn), kann auch die Hitze zum Trennen des Überführstreifens dadurch angewendet werden, dass das Initialtrennstück 11 mit einem elektrischen Widerstandsdraht als Mittel 13.1 zum Trennen ausgestaltet wird. Die zur Hitzeerzeugung notwendige Energie kann beispielsweise auf induktivem Wege, vorzugsweise unmittelbar vor dem Nip, mittels einer bekannten, hier nicht dargestellten Einrichtung berührungslos übertragen werden. In der Figur 11 ist ebenfalls dargestellt, dass die relativ leicht lösbare Verbindung zwischen dem Initialtrennstück und dem Träger 16 gelöst werden kann, beispielsweise sobald ein neuer, an das Initialtrennstück 11 und den neuen Wickelkern gebundener Bahnanfang gebildet wird, wodurch der Träger 16 gezielt nicht mit dem neuen Wickelkern mitgeführt wird.For some applications, in particular for transferring webs with high tensile strength, the initial separator 11 according to the invention can be configured with means 13.1 for separating the transfer strip, with which the new web start by punching, cutting, pressing or embossing or by a combination thereof, with the aid of formed in the nip forces or by at least one additionally arranged in front of the nip, not shown auxiliary device, is formed. When transferring material webs 3 which have a defined melting point behavior (plastic web), the heat for separating the transfer strip can also be applied by configuring the initial separating piece 11 with an electrical resistance wire as means 13.1 for separating. The energy required for heat generation can be transmitted contactlessly, for example, by inductive means, preferably immediately before the nip, by means of a known device, not shown here. FIG. 11 also shows that the relatively easily detachable connection between the initial separating piece and the carrier 16 can be released, for example, as soon as a new web beginning bound to the initial separating piece 11 and the new winding core is formed, as a result of which the carrier 16 is deliberately not involved the new winding core is carried.

Aus den Figuren 12 bis 14 wird nicht nur der prinzipielle Unterschied zwischen dem Ablaufpunkt Q der Materialbahn 3 von dem neuen Wickelkern 6 und dem zwischen der Wickelwalze 2 und dem neuen Wickelkern 6 gebildeten Nip N2 deutlich, sondern auch die Tatsache, dass die Weiterführung der Materialbahn 3 nach dem Nip N2 keinen grundsätzlichen Einfluss auf das Verfahren hat und das Verfahren universell für alle in der Praxis etablierten Wickelmaschinen-Typen einsetzbar ist.Not only the fundamental difference between the discharge point Q of the material web 3 from the new winding core 6 and the nip N2 formed between the winding roller 2 and the new winding core 6 becomes clear from FIGS. 12 to 14, but also the fact that the continuation of the material web 3 after Nip N2 has no fundamental influence on the process and the method is universally applicable for all established in practice winding machine types.

Die Figur 12 zeigt eine schematisierte Seitenansicht einer Wickelmaschine 1 beim Aufführen einer Materialbahn 3 auf einen neuen Wickelkern 6 in einem Zustand, der sporadisch beispielsweise nach einem Abriss der Materialbahn 3 entsteht. Üblicherweise wird dann die Wickelrolle aus der Wickelmaschine 1 entfernt und die Materialbahn 3 einem nicht dargestellten Auffangbehälter zugeführt. Nachdem der neue Wickelkern 6 von der Materialbahn 3 nicht umschlungen wird, ist der Ablaufpunkt Q der Materialbahn 3 von dem neuen Wickelkern 6 mit dem zwischen der Wickelwalze 2 und dem neuen Wickelkern 6 gebildeten Nip N2 identisch.FIG. 12 shows a diagrammatic side view of a winding machine 1 when a material web 3 is fed onto a new winding core 6 in a state which arises sporadically, for example, after the material web 3 has been torn off. Usually, the winding roll is then removed from the winding machine 1 and the web 3 is fed to a collecting container, not shown. After this the new winding core 6 is not wrapped by the material web 3, the flow point Q of the material web 3 of the new winding core 6 with the Nip N2 formed between the winding roller 2 and the new winding core 6 is identical.

Die Figur 13 zeigt eine schematisierte Seitenansicht einer Wickelmaschine 1 beim Aufführen einer Materialbahn 3 auf einen neuen Wickelkern 6 während eines Rollenwechsels. Wenn die gemeinsam mit der Wickelwalze 2 den Nip N1 bildende Wickelrolle 5 einen vorbestimmten Durchmesser erreicht hat, wird die Materialbahn 3 ohne Unterbrechung des Herstellungsprozesses auf den neuen Wickelkern 6 aufgeführt. In dieser Anordnung ist der neue Wickelkern 6 von der Materialbahn 3 nicht umschlungen und der Ablaufpunkt Q mit dem Nip N2 identisch.FIG. 13 shows a diagrammatic side view of a winding machine 1 during the feeding of a material web 3 onto a new winding core 6 during a roll change. If the winding roll 5, which forms the nip N1 together with the winding roll 2, has reached a predetermined diameter, the material web 3 is listed on the new winding core 6 without interrupting the production process. In this arrangement, the new winding core 6 is not wrapped by the material web 3 and the discharge point Q is identical to the nip N2.

In der Figur 14, die eine schematisierte Seitenansicht einer Wickelmaschine 1 der alternativen Bauart beim Aufführen einer Materialbahn 3 auf einen neuen Wickelkern 6 während eines Rollenwechsels zeigt, wird der neue Wickelkern 6 von der Materialbahn 3 umschlungen, wodurch der Ablaufpunkt Q der Materialbahn 3 von dem neuen Wickelkern 6 mit dem zwischen der Wickelwalze 2 und dem neuen Wickelkern 6 gebildeten Nip N2 nicht identisch ist.In the figure 14, which shows a schematic side view of a winding machine 1 of the alternative type when performing a material web 3 on a new winding core 6 during a roll change, the new winding core 6 is wrapped by the material web 3, whereby the discharge point Q of the material web 3 of the new winding core 6 with the Nip N2 formed between the winding roller 2 and the new hub 6 is not identical.

Zusammenfassend ist festzuhalten, dass durch die Erfindung ein Verfahren und eine Wickelmaschine der eingangs genannten Art geschaffen wird, die ein optimales Überführen einer laufenden Materialbahn auf einen neuen Wickelkern bei hoher Prozesssicherheit, Prozesseffizienz und günstigen Investitions- und Betriebskosten ermöglichen und die Nachteile des bekannten Stands der Technik gänzlich vermeiden. Darüber hinaus kann das Verfahren praktisch an allen bekannten Arten von Aufrollvorrichtungen und für ein breites Spektrum von Materialbahnen gleichermaßen angewendet werden.In summary, it should be noted that the invention provides a method and a winding machine of the type mentioned, which allow optimal transfer of a moving web to a new hub with high process reliability, process efficiency and low investment and operating costs and the disadvantages of the prior art Avoid technology altogether. In addition, the method can be practically applied to all known types of retractors and for a wide range of webs alike.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Wickelmaschinewinder
22
Wickelwalzewinding roller
33
Materialbahnweb
44
Mantelflächelateral surface
55
Wickelrollereel
5.15.1
Drehachse (Wickelrolle)Rotation axis (winding roll)
66
Neuer Wickelkern (Leertambour)New winding core (empty drum)
6.16.1
Drehachse (neuer Wickelkern)Rotation axis (new winding core)
7,7.17,7.1
Trennungseparation
8,8.18,8.1
Bahnrandweb edge
9,9.19,9.1
Trenneinrichtungseparator
10,10.110,10.1
ÜberführstreifenTransfer strip
11, 11.111, 11.1
InitialtrennstückInitial cutting piece
11.211.2
Bereich (nicht überdeckt)Area (not covered)
11.311.3
Bereich (überdeckt)Area (covered)
12, 12.1, 12.212, 12.1, 12.2
Abgabeeinrichtungdelivery device
13,13.113,13.1
Trennkontur, Mittel zum TrennenSeparating contour, means for separating
1414
Mittel (Klebe-, Magnet-, Formschlussverbindung, etc.)Medium (adhesive, magnetic, positive connection, etc.)
1515
Mittel (Klebe-, Magnet-, Formschlussverbindung, etc.)Medium (adhesive, magnetic, positive connection, etc.)
1616
Trägercarrier
1717
Adhäsiver BereichAdhesive area
DW D W
Durchmesser (Wickelrolle)Diameter (winding roll)
LL
Laufrichtung (Pfeil)Running direction (arrow)
N1N1
Nip (Wickelwalze-Wickelrolle)Nip (winding roller winding roll)
N2N2
Nip (Wickelwalze-neuer Wickelkern)Nip (winding roller-new hub)
QQ
Ablaufpunkt (Materialbahn)Expiry point (material web)

Claims (44)

  1. Method for transferring a material web (3), in particular a paper or board web, preferably running over a subregion of a winding roll (2), onto a new winding core (6), in particular an empty spool, forming a nip (N2) with the winding roll (2), at least one transfer strip (10, 10.1) being formed in at least one edge region (8, 8.1) of the material web (3) by means of at least one separating device (9, 9.1), preferably a transverse separating device, arranged before the nip (N2) in the running direction of the material web (3),
    characterized
    in that at least one initial separating piece (11, 11.1) is introduced directly or indirectly between the at least one transfer strip (10, 10.1) and the winding roll (2) by means of at least one dispensing device (12, 12.1, 12.2) in such a way that a region (11.2) of the initial separating piece (11, 11.1) introduced is not covered by the transfer strip (10, 10.1) and not covered by the material web (3),
    in that, after reaching the nip (N2) formed by the winding roll (2) and the new winding core (6), the initial separating piece (11, 11.1) is joined to the new winding core (6), at least temporarily, in the uncovered region (11.2), and
    in that, at the latest at the point (Q) where the material web (3) runs off the new winding core (6), separation of the transfer strip (10, 10.1) is effected and/or made possible by the initial separating piece (11, 11.1), by which means a new web start bonded to the initial separating piece (11, 11.1) and the new winding core (6) is formed.
  2. Method according to Claim 1, characterized in that a transfer strip (10, 10.1) is formed in each of the two edge regions (8, 8.1) of the material web (3).
  3. Method according to Claim 1 or 2, characterized in that an initial separating piece (11, 11.1) is used which, in the region (11.2) not covered by the transfer strip (10, 10.1) of the material web (3), is provided with means with which, at the latest when the initial separating piece (11, 11.1) reaches the nip (N2) formed by the winding roll (2) and the new winding core (6), an at least temporary, adequately firm connection between the initial separating piece (11, 11.1) and the new winding core (6) is produced.
  4. Method according to Claim 3, characterized in that, by using these means, an adhesive, vulcanization, hook-and-loop, press-stud, form-fitting, frictional or welded connection or a magnetic or electrostatic connection to the new winding core (6) is produced.
  5. Method according to one of the preceding claims, characterized in that an initial separating piece (11, 11.1) is used which, in the region (11.3) covered by the transfer strip (10, 10.1), has at least one adhesive region (17), in order to produce at least a temporary connection between the transfer strip (10, 10.1) or between the new web start and the initial separating piece (11, 11.1).
  6. Method according to one of the preceding claims, characterized in that an initial separating piece (11, 11.1) having a thickness (D) in the range from 0.5 mm to 0.05 mm, preferably in the range from 0.25 mm to 0.1 mm, is used.
  7. Method according to one of the preceding claims, characterized in that an initial separating piece (11, 11.1) formed as a moulding is used, which consists of a plastic, a metal, a textile material, a tear-resistant fibrous material, in particular paper, or at least one material combination.
  8. Method according to one of the preceding claims, characterized in that the initial separating piece (11, 11.1) is formed as a preferably easily detachable part of a carrier (16).
  9. Method according to one of Claims 1 to 7, characterized in that, before being introduced between the transfer strip (10, 10.1) and the winding roll (2), the initial separating piece (11, 11.1) is attached to at least one carrier (16) by means of a relatively easily detachable connection.
  10. Method according to Claim 8 or 9, characterized in that, after leaving the nip (N2), the at least one carrier (16) is not carried along either with the new web start or with the new winding core (6).
  11. Method according to one of the preceding claims, characterized in that the initial separating piece (11, 11.1) is provided with means (13.1) for punching, cutting, perforating or embossing the material web (3), with which, at the latest at the point (Q) where the material web (3) runs off the new winding core (6), the transfer strip (10, 10.1) is weakened or even cut through in such a way that a new web start is preferably formed in a defined manner.
  12. Method according to one of the preceding claims, characterized in that the initial separating piece (11, 11.1) is introduced substantially directly between the transfer strip (10, 10.1) and the winding roll (2) by means of at least one dispensing device (12).
  13. Method according to Claim 12, characterized in that, in the case of a winding roll (2) around which the material web (3) does not wrap, the initial separating piece (11, 11.1) is introduced substantially directly into the nip (N2) by means of at least one dispensing device (12).
  14. Method according to one of Claims 1 to 11, characterized in that the initial separating piece (11, 11.1) is introduced indirectly between the transfer strip (10, 10.1) and the winding roll (2) by means of at least one dispensing device (12.1, 12.2).
  15. Method according to Claim 14, characterized in that the initial separating piece (11, 11.1) is initially applied to the underside of the transfer strip (10, 10.1) or to the region of the material web (3) from which the transfer strip (10, 10.1) is formed, and after that is introduced between the transfer strip (10, 10.1) and the winding roll (2) by means of the transfer strip (10, 10.1).
  16. Method according to Claim 14, characterized in that, in the case of a temporary connection, the initial separating piece (11, 11.1) is initially applied to the circumferential surface (4) of the winding roll (2) and after that is introduced between the transfer strip (10, 10.1) and the winding roll (2) by means of the winding roll (2).
  17. Method according to Claim 16, characterized in that the temporary connection is produced by means of at least one adhesive area, by means of electrostatic forces, by means of magnetic forces, by means of the application of vacuum to the winding roll (2), by means of a hook-and-loop fastener or by means of at least one press-stud coupling.
  18. Method according to one of the preceding claims, characterized in that the initial separating piece (11, 11.1) forms the last device and/or the last element - seen in the running direction (L) of the material web (3) - for separating and/or for transferring the transfer strip (10, 10.1) onto a new winding core (6).
  19. Method according to one of the preceding claims, characterized in that the width of the web start transferred onto the new winding core (6) is increased by means of the separating device (9, 9.1) in such a way that the entire material web (3) is transferred onto the new winding core (6).
  20. Winding machine (1) for carrying out a method according to at least one of the preceding claims, characterized in that at least one dispensing device (12) for introducing at least one initial separating piece (11, 11.1) between at least one transfer strip (10, 10.1) and the winding roll (2) is arranged in such a way that the initial separating piece (11, 11.1) can be introduced substantially directly between the transfer strip (10, 10.1) and the winding roll (2).
  21. Winding machine (1) for carrying out a method according to at least one of the preceding claims 1 to 18, characterized in that at least one dispensing device (12.1, 12.2) for introducing at least one initial separating piece (11, 11.1) between a transfer strip (10, 10.1) and the winding roll (2) is arranged in such a way that the initial separating piece (11, 11.1) can be introduced indirectly between the transfer strip (10, 10.1) and the winding roll (2).
  22. Winding machine (1) according to Claim 21, characterized in that the dispensing device (12.1) is arranged in such a way that the initial separating piece (11, 11.1) is initially applied to the underside of the transfer strip (10, 10.1) or to the region of the material web (3) from which the transfer strip (10, 10.1) is formed, and after that can be introduced between the transfer strip (10, 10.1) and the winding roll (2) by means of the transfer strip (10, 10.1).
  23. Winding machine (1) according to Claim 21, characterized in that, in the case of a temporary connection, the dispensing device (12.2) is arranged in such a way that the initial separating piece (11, 11.1) is initially applied to the circumferential surface (4) of the winding roll (2) and after that can be introduced between the transfer strip (10, 10.1) and the winding roll (2) by means of the winding roll (2).
  24. Winding machine (1) according to one of Claims 20 to 23, characterized in that, at the latest at the point (Q) where the material web (3) runs off the new winding core (6), the transfer strip (10, 10.1) is substantially completely cut through by the initial separating piece (11, 11.1).
  25. Winding machine (1) according to Claim 24, characterized in that, at the latest at the point (Q) where the material web (3) runs off the new winding core (6), the transfer strip (10, 10.1) is substantially completely cut through along a separating contour (13, 13.1) predefined by the initial separating piece (11, 11.1).
  26. Winding machine (1) according to one of Claims 20 to 25, characterized in that the initial separating piece (11, 11.1) has at least one adhesive region (15) in the region (11.2) not covered by the transfer strip (10, 10.1) of the material web (3).
  27. Winding machine (1) according to one of Claims 20 to 26, characterized in that the initial separating piece (11, 11.1) has at least one adhesive region (17) in the region (11.3) covered by the transfer strip (10, 10.1) of the material web (3).
  28. Winding machine (1) according to one of Claims 20 to 27, characterized in that the initial separating piece (11, 11.1) has at least one separating contour (13, 13.1) in the region (11.3) covered by the transfer strip (10, 10.1) of the material web (3).
  29. Winding machine (1) according to Claim 28, characterized in that the separating contour (13, 13.1) is formed neither in the running direction (L) nor transversely with respect to the running direction (L) of the material web (3).
  30. Winding machine (1) according to one of Claims 20 to 29, characterized in that the initial separating piece (11, 11.1) has a thickness (D) in the range from 0.5 mm to 0.05 mm, preferably in the range from 0.25 mm to 0.1 mm.
  31. Winding machine (1) according to one of Claims 20 to 30, characterized in that the initial separating piece (11, 11.1) is formed as a moulding of a plastic, a metal, a textile material, a tear-resistant fibrous material, in particular paper, or of at least one material combination.
  32. Winding machine (1) according to one of Claims 20 to 31, characterized in that the initial separating piece (11, 11.1) is formed as a part of a carrier (16).
  33. Winding machine (1) according to one of Claims 20 to 32, characterized in that, before being introduced between the transfer strip (10, 10.1) and the winding roll (2), the initial separating piece (11, 11.1) is applied to at least one carrier (16) by means of a relatively easily detachable connection.
  34. Winding machine (1) according to one of Claims 20 to 33, characterized in that the separating device (9, 9.1) is arranged in the region of the winding roll (2).
  35. Winding machine (1) according to one of Claims 20 to 33, characterized in that, in the running direction (L) of the material web (3), the separating device (9, 9.1) is arranged before the winding roll (2) in the region of a free running path.
  36. Winding machine (1) according to one of Claims 20 to 33, characterized in that, in the running direction (L) of the material web (3), the separating device (9, 9.1) is arranged in a region in which the material web (3) touches at least one of the rolls upstream of the winding roll (2).
  37. Winding machine (1) according to one of Claims 20 to 36, characterized in that the separating device (9, 9.1) is arranged on the upper side of the material web (3).
  38. Winding machine (1) according to one of Claims 20 to 36, characterized in that the separating device (9, 9.1) is arranged on the underside of the material web (3) .
  39. Winding machine (1) according to one of Claims 20 to 38, characterized in that the separating device (9, 9.1) provided is a cutting element having a jet or beam of high energy density, in particular a water-jet or laser-beam cutting element.
  40. Winding machine (1) according to one of Claims 20 to 39, characterized in that only one separating device (9) is provided, and in that this separating device (9) can be applied in the region of a web edge (8) in order to form a transfer strip (10) at a distance from the latter.
  41. Winding machine (1) according to Claim 40, characterized in the separating device (9) can preferably be moved as far as the opposite web edge (8.1).
  42. Winding machine (1) according to one of Claims 20 to 39, characterized in that two separating devices (9, 9.1) are provided, which can be applied in the region of the two web edges (8, 8.1) in order to form a respective transfer strip (10, 10.1) at a distance from the respective web edge (8, 8.1).
  43. Winding machine (1) according to Claim 42, characterized in that the two separating devices (9, 9.1) can preferably be moved as far as the centre of the web.
  44. Winding machine according to one of Claims 20 to 43, characterized in that the initial separating piece (11, 11.1) forms the last device and/or the last element - seen in the running direction (L) of the material web (3) - for separating and/or for transferring the transfer strip (10, 10.1) onto a new winding core (6).
EP05107461A 2001-12-12 2002-12-11 Method for transfering a running material web onto a winding core and winding machine Expired - Lifetime EP1612173B8 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE2001161073 DE10161073A1 (en) 2001-12-12 2001-12-12 Method for forming reels of paper comprises severing web when reel change is required using cutter immediately in front of nip which incorporates system for holding cut edge against new core, e.g. adhesive
DE2001163554 DE10163554A1 (en) 2001-12-21 2001-12-21 Method for forming reels of paper comprises severing web when reel change is required using cutter immediately in front of nip which incorporates system for holding cut edge against new core, e.g. adhesive
DE10201410A DE10201410A1 (en) 2002-01-15 2002-01-15 Method for forming reels of paper comprises severing web when reel change is required using cutter immediately in front of nip which incorporates system for holding cut edge against new core, e.g. adhesive
DE10206575A DE10206575A1 (en) 2002-02-18 2002-02-18 Method for forming reels of paper comprises severing web when reel change is required using cutter immediately in front of nip which incorporates system for holding cut edge against new core, e.g. adhesive
EP02785421A EP1456105B1 (en) 2001-12-12 2002-12-11 Method for transferring a running web onto a winding core and device for implementing said method

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02785421.5 Division 2002-12-11
EP02785421A Division EP1456105B1 (en) 2001-12-12 2002-12-11 Method for transferring a running web onto a winding core and device for implementing said method

Publications (3)

Publication Number Publication Date
EP1612173A1 EP1612173A1 (en) 2006-01-04
EP1612173B1 true EP1612173B1 (en) 2007-02-21
EP1612173B8 EP1612173B8 (en) 2010-08-11

Family

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Application Number Title Priority Date Filing Date
EP02785421A Expired - Lifetime EP1456105B1 (en) 2001-12-12 2002-12-11 Method for transferring a running web onto a winding core and device for implementing said method
EP02027756A Expired - Lifetime EP1319617B1 (en) 2001-12-12 2002-12-11 Method for transfering a running material web onto a winding core and winding machine
EP05107461A Expired - Lifetime EP1612173B8 (en) 2001-12-12 2002-12-11 Method for transfering a running material web onto a winding core and winding machine

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP02785421A Expired - Lifetime EP1456105B1 (en) 2001-12-12 2002-12-11 Method for transferring a running web onto a winding core and device for implementing said method
EP02027756A Expired - Lifetime EP1319617B1 (en) 2001-12-12 2002-12-11 Method for transfering a running material web onto a winding core and winding machine

Country Status (10)

Country Link
US (1) US6929212B2 (en)
EP (3) EP1456105B1 (en)
JP (2) JP4171420B2 (en)
CN (1) CN1321869C (en)
AT (3) ATE322449T1 (en)
AU (1) AU2002350723A1 (en)
BR (1) BR0207367B1 (en)
CA (2) CA2637323C (en)
DE (3) DE50209560D1 (en)
WO (1) WO2003050026A1 (en)

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Also Published As

Publication number Publication date
EP1319617B1 (en) 2006-11-22
JP2008230859A (en) 2008-10-02
AU2002350723A1 (en) 2003-06-23
CN1321869C (en) 2007-06-20
EP1319617A1 (en) 2003-06-18
JP4171420B2 (en) 2008-10-22
EP1456105B1 (en) 2006-04-05
EP1612173B8 (en) 2010-08-11
ATE354536T1 (en) 2007-03-15
WO2003050026A1 (en) 2003-06-19
JP2005511453A (en) 2005-04-28
DE50206342D1 (en) 2006-05-18
CA2637323A1 (en) 2003-06-19
US20040211859A1 (en) 2004-10-28
ATE322449T1 (en) 2006-04-15
CA2470101A1 (en) 2003-06-19
DE50208767D1 (en) 2007-01-04
EP1612173A1 (en) 2006-01-04
US6929212B2 (en) 2005-08-16
CA2470101C (en) 2009-02-10
ATE346005T1 (en) 2006-12-15
CN1602278A (en) 2005-03-30
CA2637323C (en) 2010-11-30
BR0207367B1 (en) 2011-09-20
EP1456105A1 (en) 2004-09-15
BR0207367A (en) 2004-03-23
DE50209560D1 (en) 2007-04-05

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