EP0997417A1 - Method and device for severing a running web - Google Patents

Method and device for severing a running web Download PDF

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Publication number
EP0997417A1
EP0997417A1 EP99114472A EP99114472A EP0997417A1 EP 0997417 A1 EP0997417 A1 EP 0997417A1 EP 99114472 A EP99114472 A EP 99114472A EP 99114472 A EP99114472 A EP 99114472A EP 0997417 A1 EP0997417 A1 EP 0997417A1
Authority
EP
European Patent Office
Prior art keywords
material web
winding core
cutting
winding
cutting device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99114472A
Other languages
German (de)
French (fr)
Other versions
EP0997417B1 (en
Inventor
Zygmunt Madrzak
Walter Kaipf
Roland Möller
Matthias Wohlfahrt
Jörg Dr. Maurer
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 Paper Patent GmbH
Voith Sulzer Papiertechnik Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Paper Patent GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0997417A1 publication Critical patent/EP0997417A1/en
Application granted granted Critical
Publication of EP0997417B1 publication Critical patent/EP0997417B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2238—The web roll being driven by a winding mechanism of the nip or tangential drive type
    • B65H19/2253—The web roll being driven by a winding mechanism of the nip or tangential drive type and the roll being displaced during the winding operation
    • B65H19/2261—Pope-roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/045—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • B26D1/105—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • B26D1/11—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge with a plurality of cutting members
    • B26D1/115—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge with a plurality of cutting members for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/04—Means for moving the cutting member into its operative position for cutting by fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B65H19/265—Cutting-off the web running to the wound web roll using a cutting member moving linearly in a plane parallel to the surface of the web and along a direction crossing the web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/4187—Relative movement of core or web roll in respect of mandrel
    • B65H2301/4189—Cutting
    • B65H2301/41898—Cutting threading tail and leading it to new core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5151—Cutting handled material transversally to feeding direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51534—Water jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51536—Laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/23—Winding machines
    • B65H2408/236—Pope-winders with first winding on an arc of circle and secondary winding along rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/23—Winding machines
    • B65H2408/2362—Winding machines with two secondary winding spools, e.g. on separate carriages
    • B65H2408/2364—Winding machines with two secondary winding spools, e.g. on separate carriages with additional element for facilitating web roll change
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Definitions

  • the invention relates to a method for cutting a running Material web, in particular a paper web, in which the material web successively wound on several winding cores, in particular reels and each started with winding on a new winding core when one is formed on a previous old winding core Has reached a predetermined diameter, the new winding core between a winding roller, in particular a support roller, and the old winding core, to which the material web is fed via the winding roller is brought and the running material web in the area between a nip left by the winding roller and the new winding core is formed, and the winding roll formed on the old winding core is severed.
  • the invention also relates to a device for carrying out a such method with at least one cutting device.
  • Such separation methods and devices are for example in the Papermaking applied to the finished paper web without a break the manufacturing process, i.e. without switching off the paper machine, one after the other on several winding cores, which are also called reels be referred to wind up.
  • this object is achieved in that the material web by means of at least one cutting device which is in a material web approximately parallel plane is moved relative to the material web, is completely severed.
  • the Cutting device with an at least approximately constant speed at least substantially perpendicular to the direction of the Material web moves.
  • a cutting line can be generated in the material web at an angle to the running direction of the material web from an edge of the material web runs to the opposite edge.
  • the generated by it The sloping edge of the new web start can also be used at very high web speeds comparatively easy on the new winding core be wound up. This creates a conically wound start of winding.
  • two cutters in opposite directions at least approximately perpendicular to the direction of travel of the material web moved with preferably at least approximately constant speed.
  • the two cutting devices can - with respect to the transverse direction - in this way on the material web in the region of its center or from the edges of which are set so that two intersecting, each diagonally to the running direction of the material web from about the middle to one the edges or reverse cut lines are created.
  • the leading edge of the new path start can be cut to a point be made, which makes winding on the new winding core easier becomes.
  • the object underlying the invention is also by the Device for performing the method according to the invention solved, those with at least one for completely severing the material web trained cutting device is provided.
  • a paper web 10 is over a winding roller 18th a winding core 14, hereinafter referred to as the old winding core is supplied, on which in the state shown in FIG. 1 is already a winding roll 16 has been formed.
  • the paper web 10 runs through a gap 21 between the winding roller 16 and a pressure roller 32.
  • the axes of rotation of the winding roller 18 and the old winding core 14 lie in the same horizontal plane in which the old winding core 14 load-bearing winding carriage 44, which is outside of the axis of rotation of the Winding roller 18 and the old winding core 14 is in one direction is movable perpendicular to the axes of rotation.
  • Fig. 1 shows the winding device in a state in which the desired Final diameter of the winding roller 16 reached and the old winding core 14 from a winding position adjacent to the winding roller 18 in FIG. 1 has moved to the right.
  • a new winding core 12 on which the paper web 10 is further wound 1 the winding roller 18 is in a position as shown in FIG driven in which the axes of rotation of the new winding core 12 and the Winding roller 18 perpendicular cutting line at an angle ⁇ of about 30 ° to the horizontal.
  • the new winding core 12 and the winding roller 18 form a gap 20 for the paper web 10.
  • a cutting device is near the new winding core 12 in the direction of web travel behind the gap 20 between the winding roller 18 and the new one Winding core 12, i.e. in the area between the gap 20 and the on the old winding core 14 formed winding roll 16 positioned.
  • the cutting device comprises a knife 24 which is connected to a transport device 36 is coupled, which is attached to a carrier 38.
  • the Carrier 38 is together with the knife 24 and the transport device 36 by means of an actuator 34 between a solid in Fig. 1 Lines shown separating position and a dashed line Waiting position swiveling, as indicated by a double arrow is indicated in Fig. 1.
  • the transport device 36 for example comprises an endless member 40 designed as a chain, belt or band, to which the knife 24 is attached and which is perpendicular to the direction indicated by an arrow B, i.e. longitudinal of the new winding core 12 extends, the direction of rotation by a Arrow C is indicated.
  • the endless member 40 is tensioned by two deflecting rollers 42.
  • One of the Deflection rollers 42 is coupled to a drive device, not shown, let it circulate around the endless member 40 and thus the knife 24 to be able to.
  • the carrier 38 is pivoted into the disconnected position according to FIG. 1, wherein the knife 24 in the rest position shown in dashed lines in FIG. 2 on the side of the endless member 40 facing away from the paper web 10 located.
  • a cutting line is formed which runs obliquely to the web running direction B. 46, the angle that the cutting line 46 with the web running direction B includes the ratio of the speeds of the knife 24 and the paper web 10 depends.
  • Paper web 10 cut at an angle to web running direction B is then where appropriate with the help of suitable funds on the new winding core 12 wound.
  • the new path start 10a can do this for example, blown onto the new winding core 12 by means of compressed air become. Due to the severing of the paper web 10 behind the gap 20 is the new winding core 12 in the arrangement according to FIGS. 1 and 2 at the end of the separation process, in some areas, from the new start of the path 10a wrapped around, causing the new web start to wind up 10a on the new winding core 12 is facilitated.
  • the cutting device can also be used with another Cutting tool may be provided, for example with a nozzle for Ejecting a jet of water under high pressure, a laser or a rotating toothed cutting wheel.
  • the The cutting device can also be moved at an angle to the web running direction B, whereby - with unchanged speed of the paper web 10 and the Knife 24 - the angle between the cutting line 46 and the web running direction B smaller, i.e. the paper web 10 is cut more sharply.
  • the winding device in the embodiment according to FIG. 3 differs differs from the embodiment described above with reference to FIGS. 1 and 2 in that the new one for severing the paper web 10 Winding core 12 further into the space between winding roll 16 and the winding roller 18 is moved in such a way that the axes of rotation of the Winding cores 12, 14 and the winding roller 18 in the same horizontal Level.
  • the new one Winding core 12 thus dipped deeper into the paper web 10, the Paper web 10 the new winding core 12 over an angular range of almost wraps around 90 °.
  • the cutting device instead of a rotating knife, the cutting device with a revolving nozzle 26, through which a water jet under high Pressure can be ejected in the direction of the new winding core 12, which is able to cut the paper web 10.
  • the nozzle 26 is aligned so that such a water jet approximately in radial Direction towards the new winding core 12 is aimed.
  • the cutting device can also be done by other means be provided for severing the paper web 10, e.g. B. with a laser device.
  • the winding cores 12, 14 are preferably of an elastically deformable type Cover made of polyurethane or another wear-resistant plastic Mistake.
  • the winding roller 18 can be compliant Have reference, while the winding cores 12, 14 with a metal manufactured cover are provided.
  • the cutting device comprises two knives 24 ' in each case perpendicular to the web running direction indicated by the arrow B in FIG. 5 are movable in opposite directions.
  • the transport device 36 'not shown in detail in FIG. 5 comprises an endless organ, as explained in connection with FIGS. 1 and 2 has been and on which the two knives 24 'are attached.
  • the two knives 24 'are at a distance from one another in the web running direction B. arranged and are for cutting the paper web 10 each with respect to their transverse direction set approximately in the middle. Around the paper web 10 completely cut, the two knives 24 'are accelerated and depending on their own speed as well on the speed of the paper web 10 on the paper web 10 assuming that the two resulting cutting lines 46 'intersect, as shown in Fig. 5.
  • the knives 24 'can also each start from one of the edges of the Paper web 10 perpendicular to the web running direction B in the direction of the center the paper web 10 are in turn moved such that the cutting lines to cut. This would look like a V or dovetail incised new start of path.
  • the embodiment of the winding device according to the invention 6 and 7 differs from the embodiment according to Fig. 1 in that the knife 24 '' transport device 36 '' includes a cylinder-piston unit 28.
  • the knife 24 '' is with one Cylinder coupled in a perpendicular to the web running direction B in a piston extending parallel to the paper web 10 can be moved back and forth.
  • every combination is between the specific design the cutting device and the arrangement of the new winding core 12 possible with respect to the old winding core 14 and the winding roller 18.
  • the transport device of the cutting device can also be one a linear guide include positively guided carriage, the beginning of the separation process accelerated impulsively and over the full width of the Paper web is shot as it were.
  • the transport device 36, 36 ', 36' 'of the cutting device and the Actuator 34 can with the new winding core 12 - z. B. about elements carried by means of the new winding core 12 - coupled in this way be that the cutting device when swiveling the new Winding core 12 to the winding roller 18 - regardless of the position of the new winding core 12 - always in an optimal position for Cutting the paper web 10 is located.
  • An advantage of the invention is that the pivoting movement of the new winding core 12 to the winding roller 18 for cutting the paper web 10 does not have to be interrupted.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Replacement Of Web Rolls (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Details Of Cutting Devices (AREA)
  • Control Of Cutting Processes (AREA)

Abstract

Cutting a continuous moving material sheet involves using a cutting unit which is movable relative to the material sheet in a plane substantially parallel to the material sheet. The moving material sheet (10) is cut through completely by means of at least one cutter unit which moves relative to the material sheet in a plane substantially parallel to the material sheet. An independent claim is also included for an apparatus for implementation of the above method, in which the cutter unit of the apparatus is movable relative to the material sheet in a plane substantially parallel to the material sheet.

Description

Die Erfindung betrifft ein Verfahren zum Durchtrennen einer laufenden Materialbahn, insbesondere einer Papierbahn, bei dem die Materialbahn nacheinander auf mehrere Wickelkerne, insbesondere Tamboure, aufgewickelt und jeweils mit dem Aufwickeln auf einen neuen Wickelkern begonnen wird, wenn eine auf einem vorherigen alten Wickelkern gebildete Wickelrolle einen vorbestimmten Durchmesser erreicht hat, wobei der neue Wickelkern zwischen eine Wickelwalze, insbesondere eine Tragwalze, und den alten Wickelkern, dem die Materialbahn über die Wickelwalze zugeführt wird, gebracht und die laufende Materialbahn in dem Bereich zwischen einem Spalt, der von der Wickelwalze und dem neuen Wickelkern gebildet wird, und der auf dem alten Wickelkern gebildeten Wickelrolle durchtrennt wird.The invention relates to a method for cutting a running Material web, in particular a paper web, in which the material web successively wound on several winding cores, in particular reels and each started with winding on a new winding core when one is formed on a previous old winding core Has reached a predetermined diameter, the new winding core between a winding roller, in particular a support roller, and the old winding core, to which the material web is fed via the winding roller is brought and the running material web in the area between a nip left by the winding roller and the new winding core is formed, and the winding roll formed on the old winding core is severed.

Die Erfindung betrifft außerdem eine Vorrichtung zur Durchführung eines derartigen Verfahrens mit wenigstens einer Schneidvorrichtung.The invention also relates to a device for carrying out a such method with at least one cutting device.

Derartige Trennverfahren und -vorrichtungen werden beispielsweise in der Papierherstellung angewendet, um die fertige Papierbahn ohne Unterbrechung des Herstellungsprozesses, d.h. ohne Abschalten der Papiermaschine, nacheinander auf mehrere Wickelkerne, die auch als Tamboure bezeichnet werden, aufzuwickeln. Such separation methods and devices are for example in the Papermaking applied to the finished paper web without a break the manufacturing process, i.e. without switching off the paper machine, one after the other on several winding cores, which are also called reels be referred to wind up.

Dabei muß dafür gesorgt werden, daß der durch das Durchtrennen der Materialbahn entstehende neue Bahnanfang dem neuen Wickelkern zugeführt wird, um auf diesem eine neue Wickelrolle zu bilden.It must be ensured that the by cutting the The new beginning of the material is fed to the new winding core to form a new winding roll on this.

Aus der WO 97/48632, der US 5,360,179 sowie der EP 0 658 504 B1 ist es jeweils bekannt, die Papierbahn vor dem Wickelspalt zwischen der Wickelwalze und dem neuen Wickelkern zu durchtrennen und dazu beispielsweise mit schräg zur Bahnlaufrichtung verlaufenden oder gekrümmten Schnittlinien zu versehen. Bei dem Durchtrennen der Papierbahn vor dem Wickelspalt besteht die Gefahr, daß der neue Bahnanfang zurückspringt und nicht in den Wickelspalt geführt werden kann.From WO 97/48632, US 5,360,179 and EP 0 658 504 B1 it is known the paper web in front of the winding nip between the winding roller and to cut the new winding core and for example with curved or oblique to the web running direction To provide cutting lines. When cutting the paper web before Winding gap there is a risk that the new beginning of the web will spring back and cannot be fed into the winding gap.

Es ist des weiteren bekannt, mittels einer schwenkbaren maschinenbreiten Trennvorrichtung zwischen dem neuen und dem alten Wickelkern, d.h. hinter dem Wickelspalt, in die Papierbahn zu schlagen. Die dabei entstehende, senkrecht zur Bahnlaufrichtung verlaufende Schnittkante kann zu Problemen beim Aufwickeln des neuen Bahnanfangs auf dem neuen Wickelkern führen.It is also known by means of a swiveling machine width Separating device between the new and the old winding core, i.e. behind the winding nip to punch in the paper web. The resulting Cutting edge running perpendicular to the web running direction can problems with winding the new start of the web on the new one Guide the winding core.

Aus der EP 0 658 504 B1 ist es ebenfalls bekannt, die Materialbahn hinter dem Wickelspalt zwischen der Wickelwalze und dem neuen Wickelkern zu durchtrennen, wobei nicht erwähnt ist, in welcher Weise dies erfolgt.It is also known from EP 0 658 504 B1 that the material web is behind the winding gap between the winding roller and the new winding core cut through, but it is not mentioned how this is done.

Aus der DE 44 01 804 A1 ist es bekannt, in den Weg einer Papierbahn eine Trennvorrichtung hinein zu bewegen, die ein streckenweise traversierendes Messer als Trenngerät umfaßt. Des weiteren ist es aus dieser Druckschrift bekannt, die Papierbahn mittels eines Messers nur an einer Stelle zu schwächen und anschließend mittels Druckluft restlos zu durchtrennen. Bei dem nur streckenweise traversierenden Messer und dem die Papierbahn lediglich schwächenden Messer besteht jeweils die Gefahr des unkontrollierten Einreißens der Papierbahn.From DE 44 01 804 A1 it is known to insert a into the path of a paper web Moving separator into it, which is a traversing in places Knife includes as a separator. Furthermore, it is from this Publication known, the paper web by means of a knife only on one To weaken point and then completely using compressed air cut through. With the knife and the only weakening of the paper web is the Danger of uncontrolled tearing of the paper web.

Es ist eine Aufgabe der Erfindung, ein Verfahren sowie eine Vorrichtung der eingangs genannten Art zu schaffen, die ein optimales Aufwickeln des neuen Bahnanfangs auf dem neuen Wickelkern ermöglichen.It is an object of the invention, a method and an apparatus of the type mentioned to create an optimal winding of the enable new web start on the new winding core.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Materialbahn mittels wenigstens einer Schneidvorrichtung, die in einer zur Materialbahn etwa parallelen Ebene relativ zur Materialbahn bewegt wird, vollständig durchtrennt wird.According to the invention, this object is achieved in that the material web by means of at least one cutting device which is in a material web approximately parallel plane is moved relative to the material web, is completely severed.

Durch das erfindungsgemäße vollständige Durchtrennen der Materialbahn wird ein undefiniertes Einreißen der Materialbahn verhindert, so daß die führende Kante des neuen Bahnanfangs stets die gleiche, vorgebbare Form besitzt und somit in definierter Weise an den neuen Wickelkern herangeführt werden kann. Des weiteren ist eine Beaufschlagung mit Druckluft zum vollständigen Durchtrennen der Materialbahn entbehrlich.By completely severing the material web according to the invention Undefined tearing of the material web is prevented, so that the leading edge of the new path start always the same, definable Has shape and thus introduced to the new winding core in a defined manner can be. Furthermore, it is pressurized with compressed air not necessary to completely cut through the material web.

Gemäß einer bevorzugten Ausführungsform der Erfindung wird die Schneidvorrichtung mit einer zumindest näherungsweise konstanten Geschwindigkeit zumindest im wesentlichen senkrecht zur Laufrichtung der Materialbahn bewegt.According to a preferred embodiment of the invention, the Cutting device with an at least approximately constant speed at least substantially perpendicular to the direction of the Material web moves.

Hierdurch kann in der Materialbahn eine Schnittlinie erzeugt werden, die schräg zur Laufrichtung der Materialbahn von einem Rand der Materialbahn zu deren gegenüberliegendem Rand verläuft. Die dadurch erzeugte schräge Kante des neuen Bahnanfangs kann auch bei sehr hohen Bahngeschwindigkeiten vergleichsweise problemlos auf den neuen Wickelkern aufgewickelt werden. Hierbei entsteht ein konisch gewickelter Wickelanfang.As a result, a cutting line can be generated in the material web at an angle to the running direction of the material web from an edge of the material web runs to the opposite edge. The generated by it The sloping edge of the new web start can also be used at very high web speeds comparatively easy on the new winding core be wound up. This creates a conically wound start of winding.

Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung werden zwei Schneidvorrichtungen in einander entgegengesetzten Richtungen zumindest näherungsweise senkrecht zur Laufrichtung der Materialbahn mit bevorzugt zumindest näherungsweise konstanter Geschwindigkeit bewegt.According to a further preferred embodiment of the invention two cutters in opposite directions at least approximately perpendicular to the direction of travel of the material web moved with preferably at least approximately constant speed.

Die beiden Schneidvorrichtungen können dabei - bezüglich der Querrichtung - derart an der Materialbahn im Bereich von deren Mitte oder von deren Rändern angesetzt werden, daß zwei sich schneidende, jeweils schräg zur Laufrichtung der Materialbahn etwa von deren Mitte zu einem der Ränder bzw. umgekehrt verlaufende Schnittlinien entstehen. Auf diese Weise kann die führende Kante des neuen Bahnanfangs spitz zugeschnitten werden, wodurch das Aufwickeln auf dem neuen Wickelkern erleichtert wird.The two cutting devices can - with respect to the transverse direction - in this way on the material web in the region of its center or from the edges of which are set so that two intersecting, each diagonally to the running direction of the material web from about the middle to one the edges or reverse cut lines are created. To this The leading edge of the new path start can be cut to a point be made, which makes winding on the new winding core easier becomes.

Die der Erfindung zugrundeliegende Aufgabe wird außerdem durch die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens gelöst, die mit wenigstens einer zum vollständigen Durchtrennen der Materialbahn ausgebildeten Schneidvorrichtung versehen ist.The object underlying the invention is also by the Device for performing the method according to the invention solved, those with at least one for completely severing the material web trained cutting device is provided.

Bevorzugte Ausführungsformen der Erfindung sind in den Unteransprüchen, der Beschreibung sowie den Zeichnungen angegeben. Preferred embodiments of the invention are in the subclaims, the description and the drawings.

Die Erfindung wird im folgenden beispielhaft unter Bezugnahme auf die Zeichnung beschrieben. Es zeigen:

Fig. 1
eine Seitenansicht einer Wickelvorrichtung gemäß einer Ausführungsform der Erfindung,
Fig. 2
einen Teil der Wickelvorrichtung von Fig. 1 in Richtung des Pfeils II gesehen,
Fig. 3
eine Wickelvorrichtung gemäß einer weiteren Ausführungsform der Erfindung,
Fig. 4
eine Wickelvorrichtung gemäß einer weiteren Ausführungsform der Erfindung,
Fig. 5
einen Teil der Wickelvorrichtung von Fig. 4 in Richtung des Pfeils V gesehen,
Fig. 6
eine Wickelvorrichtung gemäß einer weiteren Ausführungsform der Erfindung, und
Fig. 7
einen Teil der Wickelvorrichtung von Fig. 6 in Richtung des Pfeils VII gesehen.
The invention is described below by way of example with reference to the drawing. Show it:
Fig. 1
a side view of a winding device according to an embodiment of the invention,
Fig. 2
seen part of the winding device of Fig. 1 in the direction of arrow II,
Fig. 3
a winding device according to a further embodiment of the invention,
Fig. 4
a winding device according to a further embodiment of the invention,
Fig. 5
4 seen in the direction of arrow V,
Fig. 6
a winding device according to a further embodiment of the invention, and
Fig. 7
a part of the winding device of Fig. 6 seen in the direction of arrow VII.

In der Wickelvorrichtung gemäß Fig. 1, die Bestandteil einer Maschine zur Papierherstellung ist, wird eine Papierbahn 10 über eine Wickelwalze 18 einem Wickelkern 14, der im folgenden als alter Wickelkern bezeichnet wird, zugeführt, auf dem in dem Zustand gemäß Fig. 1 bereits eine Wickelrolle 16 gebildet worden ist. Die Papierbahn 10 läuft durch einen Spalt 21 zwischen der Wickelrolle 16 und einer Andrückwalze 32.1, which is part of a machine for Is paper production, a paper web 10 is over a winding roller 18th a winding core 14, hereinafter referred to as the old winding core is supplied, on which in the state shown in FIG. 1 is already a winding roll 16 has been formed. The paper web 10 runs through a gap 21 between the winding roller 16 and a pressure roller 32.

Die Drehachsen der Wickelwalze 18 und des alten Wickelkerns 14 liegen in der gleichen horizontalen Ebene, in der ein den alten Wickelkern 14 tragender Wickelschlitten 44, der außerhalb der durch die Drehachsen der Wickelwalze 18 und des alten Wickelkerns 14 liegt, in einer Richtung senkrecht zu den Drehachsen verfahrbar ist.The axes of rotation of the winding roller 18 and the old winding core 14 lie in the same horizontal plane in which the old winding core 14 load-bearing winding carriage 44, which is outside of the axis of rotation of the Winding roller 18 and the old winding core 14 is in one direction is movable perpendicular to the axes of rotation.

Fig. 1 zeigt die Wickelvorrichtung in einem Zustand, in dem der gewünschte Enddurchmesser der Wickelrolle 16 erreicht und der alte Wickelkern 14 aus einer Wickelposition benachbart der Wickelwalze 18 in Fig. 1 nach rechts gefahren ist.Fig. 1 shows the winding device in a state in which the desired Final diameter of the winding roller 16 reached and the old winding core 14 from a winding position adjacent to the winding roller 18 in FIG. 1 has moved to the right.

Ein neuer Wickelkern 12, auf den die Papierbahn 10 weiter aufgewickelt werden soll, ist gemäß Fig. 1 an die Wickelwalze 18 heran in eine Position gefahren, in der eine die Drehachsen des neuen Wickelkerns 12 und der Wickelwalze 18 senkrecht schneidende Linie unter einem Winkel α von etwa 30° zur Horizontalen verläuft. Der neue Wickelkern 12 und die Wickelwalze 18 bilden dabei einen Spalt 20 für die Papierbahn 10.A new winding core 12 on which the paper web 10 is further wound 1, the winding roller 18 is in a position as shown in FIG driven in which the axes of rotation of the new winding core 12 and the Winding roller 18 perpendicular cutting line at an angle α of about 30 ° to the horizontal. The new winding core 12 and the winding roller 18 form a gap 20 for the paper web 10.

Eine Schneidvorrichtung ist nahe dem neuen Wickelkern 12 in Bahnlaufrichtung hinter dem Spalt 20 zwischen der Wickelwalze 18 und dem neuen Wickelkern 12, d.h. in dem Bereich zwischen dem Spalt 20 und der auf dem alten Wickelkern 14 gebildeten Wickelrolle 16 positioniert.A cutting device is near the new winding core 12 in the direction of web travel behind the gap 20 between the winding roller 18 and the new one Winding core 12, i.e. in the area between the gap 20 and the on the old winding core 14 formed winding roll 16 positioned.

Die Schneidvorrichtung umfaßt ein Messer 24, das mit einer Transporteinrichtung 36 gekoppelt ist, die an einem Träger 38 angebracht ist. Der Träger 38 ist zusammen mit dem Messer 24 und der Transporteinrichtung 36 mittels eines Betätigungsorgans 34 zwischen einer in Fig. 1 in durchgezogenen Linien dargestellten Trennstellung und einer gestrichelt gezeichneten Wartestellung verschwenkbar, wie es durch einen Doppelpfeil in Fig. 1 angedeutet ist.The cutting device comprises a knife 24 which is connected to a transport device 36 is coupled, which is attached to a carrier 38. The Carrier 38 is together with the knife 24 and the transport device 36 by means of an actuator 34 between a solid in Fig. 1 Lines shown separating position and a dashed line Waiting position swiveling, as indicated by a double arrow is indicated in Fig. 1.

Aus Fig. 2 ist zu erkennen, daß die Transporteinrichtung 36 ein beispielsweise als Kette, Riemen oder Band ausgebildetes Endlosorgan 40 umfaßt, an dem das Messer 24 angebracht ist und das sich senkrecht zu der durch einen Pfeil B angedeuteten Bahnlaufrichtung, d.h. in Längsrichtung des neuen Wickelkerns 12 erstreckt, dessen Drehrichtung durch einen Pfeil C angedeutet ist.From Fig. 2 it can be seen that the transport device 36, for example comprises an endless member 40 designed as a chain, belt or band, to which the knife 24 is attached and which is perpendicular to the direction indicated by an arrow B, i.e. longitudinal of the new winding core 12 extends, the direction of rotation by a Arrow C is indicated.

Das Endlosorgan 40 ist durch zwei Umlenkrollen 42 gespannt. Eine der Umlenkrollen 42 ist mit einer nicht dargestellten Antriebsvorrichtung gekoppelt, um das Endlosorgan 40 und somit das Messer 24 umlaufen lassen zu können.The endless member 40 is tensioned by two deflecting rollers 42. One of the Deflection rollers 42 is coupled to a drive device, not shown, let it circulate around the endless member 40 and thus the knife 24 to be able to.

Um mit der in den Fig. 1 und 2 gezeigten erfindungsgemäßen Wickelvorrichtung die Papierbahn 10 auf den neuen Wickelkern 12 aufzuwickeln, wird zunächst der Zustand gemäß Fig. 1 hergestellt. Dazu wird der neue Wickelkern 12 zwischen die Wickelwalze 18 und den von der Wickelwalze 18 weggefahrenen alten Wickelkern 14 gebracht.In order with the winding device according to the invention shown in FIGS. 1 and 2 wind the paper web 10 onto the new winding core 12, the state shown in FIG. 1 is first established. This will be the new one Winding core 12 between the winding roller 18 and that of the winding roller 18 brought away old winding core 14.

Gleichzeitig oder im Anschluß daran wird mittels des Betätigungsorgans 34 der Träger 38 in die Trennstellung gemäß Fig. 1 geschwenkt, wobei sich das Messer 24 in der in Fig. 2 gestrichelt dargestellten Ruhestellung auf der von der Papierbahn 10 abgewandten Seite des Endlosorgans 40 befindet.Simultaneously or subsequently, by means of the actuator 34 the carrier 38 is pivoted into the disconnected position according to FIG. 1, wherein the knife 24 in the rest position shown in dashed lines in FIG. 2 on the side of the endless member 40 facing away from the paper web 10 located.

Wenn der gewünschte Durchmesser der Wickelrolle 16 auf dem alten Wickelkern 14 erreicht ist, wird das Endlosorgan 40 in Richtung eines Pfeils A in Bewegung gesetzt, wobei das Messer 24 aus seiner Ruhestellung heraus derart beschleunigt wird, daß es spätestens nach Umlaufen der in Fig. 2 linken Umlenkrolle 42 die gewünschte Geschwindigkeit erreicht hat. Die mit unverminderter Geschwindigkeit laufende Papierbahn 10 wird dann - beginnend an deren in Fig. 2 linkem Rand - durch das mit einer konstanten Geschwindigkeit, die bevorzugt 10 bis 40 m/s beträgt, laufende Messer 24 vollständig durchgetrennt.If the desired diameter of the winding roll 16 on the old winding core 14 is reached, the endless member 40 in the direction of an arrow A set in motion, the knife 24 out of its rest position is accelerated in such a way that it rotates at the latest after the circulation in FIG Left pulley 42 has reached the desired speed. The paper web 10 running at undiminished speed then - starting at the left edge in Fig. 2 - by the one constant speed, which is preferably 10 to 40 m / s, running Knife 24 completely severed.

Durch die Überlagerung der Bewegungen der Papierbahn 10 und des Messers 24 entsteht eine schräg zur Bahnlaufrichtung B verlaufende Schnittlinie 46, wobei der Winkel, den die Schnittlinie 46 mit der Bahnlaufrichtung B einschließt, von dem Verhältnis der Geschwindigkeiten des Messers 24 und der Papierbahn 10 abhängt.By superimposing the movements of the paper web 10 and the knife 24, a cutting line is formed which runs obliquely to the web running direction B. 46, the angle that the cutting line 46 with the web running direction B includes the ratio of the speeds of the knife 24 and the paper web 10 depends.

Die an der führenden Kante 10b des neuen Bahnanfangs 10a somit schräg zur Bahnlaufrichtung B geschnittene Papierbahn 10 wird anschließend gegebenenfalls unter Zuhilfenahme geeigneter Mittel auf dem neuen Wickelkern 12 aufgewickelt. Der neue Bahnanfang 10a kann dazu beispielsweise mittels Druckluft an den neuen Wickelkern 12 geblasen werden. Aufgrund des Durchtrennens der Papierbahn 10 hinter dem Spalt 20 ist bei der Anordnung gemäß den Fig. 1 und 2 der neue Wickelkern 12 am Ende des Trennvorgangs bereits bereichsweise von dem neuen Bahnanfang 10a umschlungen, wodurch das Aufwickeln des neuen Bahnanfangs 10a auf den neuen Wickelkern 12 erleichtert wird.That at the leading edge 10b of the new path start 10a Paper web 10 cut at an angle to web running direction B is then where appropriate with the help of suitable funds on the new winding core 12 wound. The new path start 10a can do this for example, blown onto the new winding core 12 by means of compressed air become. Due to the severing of the paper web 10 behind the gap 20 is the new winding core 12 in the arrangement according to FIGS. 1 and 2 at the end of the separation process, in some areas, from the new start of the path 10a wrapped around, causing the new web start to wind up 10a on the new winding core 12 is facilitated.

Anstelle des Messers 24 kann die Schneidvorrichtung auch mit einem anderen Schneidewerkzeug versehen sein, beispielsweise mit einer Düse zum Ausstoßen eines Wasserstrahls unter hohem Druck, einem Laser oder einem rotierenden gezahnten Schneiderad.Instead of the knife 24, the cutting device can also be used with another Cutting tool may be provided, for example with a nozzle for Ejecting a jet of water under high pressure, a laser or a rotating toothed cutting wheel.

Abweichend von der Ausführungsform gemäß Fig. 1 und 2 kann die Schneidvorrichtung auch schräg zur Bahnlaufrichtung B bewegt werden, wodurch - bei unveränderter Geschwindigkeit der Papierbahn 10 und des Messers 24 - der Winkel zwischen der Schnittlinie 46 und der Bahnlaufrichtung B kleiner, d.h. die Papierbahn 10 spitzer geschnitten wird.Deviating from the embodiment according to FIGS. 1 and 2, the The cutting device can also be moved at an angle to the web running direction B, whereby - with unchanged speed of the paper web 10 and the Knife 24 - the angle between the cutting line 46 and the web running direction B smaller, i.e. the paper web 10 is cut more sharply.

Die Wickelvorrichtung in der Ausführungsform gemäß Fig. 3 unterscheidet sich von der vorstehend anhand der Fig. 1 und 2 beschriebenen Ausführung dadurch, daß zum Durchtrennen der Papierbahn 10 der neue Wickelkern 12 weiter in den Zwischenraum zwischen der Wickelrolle 16 und der Wickelwalze 18 derart hineinbewegt wird, daß die Drehachsen der Wickelkerne 12, 14 und der Wickelwalze 18 in der gleichen horizontalen Ebene liegen. Im Gegensatz zur Ausführungsform von Fig. 1 ist der neue Wickelkern 12 somit tiefer in die Papierbahn 10 eingetaucht, wobei die Papierbahn 10 den neuen Wickelkern 12 über einen Winkelbereich von beinahe 90° umschlingt.The winding device in the embodiment according to FIG. 3 differs differs from the embodiment described above with reference to FIGS. 1 and 2 in that the new one for severing the paper web 10 Winding core 12 further into the space between winding roll 16 and the winding roller 18 is moved in such a way that the axes of rotation of the Winding cores 12, 14 and the winding roller 18 in the same horizontal Level. In contrast to the embodiment of Fig. 1 is the new one Winding core 12 thus dipped deeper into the paper web 10, the Paper web 10 the new winding core 12 over an angular range of almost wraps around 90 °.

Anstelle eines umlaufenden Messers ist die Schneidvorrichtung mit einer umlaufenden Düse 26 versehen, über die ein Wasserstrahl unter hohem Druck in Richtung des neuen Wickelkerns 12 ausgestoßen werden kann, welcher in der Lage ist, die Papierbahn 10 zu durchtrennen. Die Düse 26 ist so ausgerichtet, daß ein derartiger Wasserstrahl näherungsweise in radialer Richtung auf den neuen Wickelkern 12 zielt.Instead of a rotating knife, the cutting device with a revolving nozzle 26, through which a water jet under high Pressure can be ejected in the direction of the new winding core 12, which is able to cut the paper web 10. The nozzle 26 is aligned so that such a water jet approximately in radial Direction towards the new winding core 12 is aimed.

Grundsätzlich kann die Schneidvorrichtung auch mit anderen Mitteln zum Durchtrennen der Papierbahn 10 versehen sein, z. B. mit einer Laservorrichtung.In principle, the cutting device can also be done by other means be provided for severing the paper web 10, e.g. B. with a laser device.

Die Wickelkerne 12, 14 sind bevorzugt mit einem elastisch verformbaren Bezug aus Polyurethan oder einem anderen verschleißfesten Kunststoff versehen. Alternativ kann die Wickelwalze 18 einen derartigen nachgiebigen Bezug aufweisen, während die Wickelkerne 12, 14 mit einem aus Metall hergestelltem Bezug versehen sind.The winding cores 12, 14 are preferably of an elastically deformable type Cover made of polyurethane or another wear-resistant plastic Mistake. Alternatively, the winding roller 18 can be compliant Have reference, while the winding cores 12, 14 with a metal manufactured cover are provided.

Gemäß der in den Fig. 4 und 5 vereinfacht dargestellten Ausführungsform einer erfindungsgemäßen Wickelvorrichtung, bei der der neue Wickelkern 12 während des Durchtrennens der Papierbahn 10 bezüglich der Wickelwalze 18 und des alten Wickelkerns 14 wiederum in einer Position gemäß Fig. 1 angeordnet ist, umfaßt die Schneidvorrichtung zwei Messer 24', die jeweils senkrecht zu der in Fig. 5 durch den Pfeil B angedeuteten Bahnlaufrichtung in einander entgegengesetzten Richtungen bewegbar sind.According to the embodiment shown in simplified form in FIGS. 4 and 5 a winding device according to the invention, in which the new winding core 12 during the severing of the paper web 10 with respect to the winding roller 18 and the old winding core 14 in turn in a position according to Fig. 1 is arranged, the cutting device comprises two knives 24 ' in each case perpendicular to the web running direction indicated by the arrow B in FIG. 5 are movable in opposite directions.

Die in Fig. 5 nicht im einzelnen dargestellte Transporteinrichtung 36' umfaßt ein Endlosorgan, wie es in Verbindung mit den Fig. 1 und 2 erläutert worden ist und an dem die beiden Messer 24' angebracht sind.The transport device 36 'not shown in detail in FIG. 5 comprises an endless organ, as explained in connection with FIGS. 1 and 2 has been and on which the two knives 24 'are attached.

Die beiden Messer 24' sind in Bahnlaufrichtung B mit Abstand voneinander angeordnet und werden zum Durchtrennen der Papierbahn 10 jeweils bezüglich deren Querrichtung etwa mittig angesetzt. Um die Papierbahn 10 vollständig zu durchtrennen, werden die beiden Messer 24' vorbeschleunigt und in Abhängigkeit von ihrer eigenen Geschwindigkeit sowie von der Geschwindigkeit der Papierbahn 10 derart an der Papierbahn 10 angesetzt, daß sich die beiden entstehenden Schnittlinien 46' schneiden, wie es in Fig. 5 gezeigt ist.The two knives 24 'are at a distance from one another in the web running direction B. arranged and are for cutting the paper web 10 each with respect to their transverse direction set approximately in the middle. Around the paper web 10 completely cut, the two knives 24 'are accelerated and depending on their own speed as well on the speed of the paper web 10 on the paper web 10 assuming that the two resulting cutting lines 46 'intersect, as shown in Fig. 5.

Hierdurch ergibt sich ein spitz zulaufender neuer Bahnanfang 10'a, der gegebenenfalls unter Zuhilfenahme geeigneter Mittel, beispielsweise Druckluft, auf dem neuen Wickelkern 12 aufgewickelt wird.This results in a tapering new path start 10'a, the where appropriate with the aid of suitable means, for example Compressed air, is wound on the new winding core 12.

Die Messer 24' können auch jeweils ausgehend von einem der Ränder der Papierbahn 10 senkrecht zur Bahnlaufrichtung B in Richtung der Mitte der Papierbahn 10 wiederum derart bewegt werden, daß sich die Schnittlinien schneiden. Hierbei würde sich ein V-artig oder schwalbenschwanzartig eingeschnittener neuer Bahnanfang ergeben.The knives 24 'can also each start from one of the edges of the Paper web 10 perpendicular to the web running direction B in the direction of the center the paper web 10 are in turn moved such that the cutting lines to cut. This would look like a V or dovetail incised new start of path.

Die Ausführungsform der erfindungsgemäßen Wickelvorrichtung gemäß den Fig. 6 und 7 unterscheidet sich von der Ausführungsform gemäß Fig. 1 dadurch, daß die ein Messer 24'' umfassende Transporteinrichtung 36'' eine Zylinder-Kolben-Einheit 28 umfaßt. Das Messer 24'' ist mit einem Zylinder gekoppelt, der in einem sich senkrecht zur Bahnlaufrichtung B in einer zur Papierbahn 10 parallel verlaufenden Ebene erstreckenden Kolben hin- und herbewegbar ist.The embodiment of the winding device according to the invention 6 and 7 differs from the embodiment according to Fig. 1 in that the knife 24 '' transport device 36 '' includes a cylinder-piston unit 28. The knife 24 '' is with one Cylinder coupled in a perpendicular to the web running direction B in a piston extending parallel to the paper web 10 can be moved back and forth.

Grundsätzlich ist jede Kombination zwischen der konkreten Ausgestaltung der Schneidvorrichtung sowie der Anordnung des neuen Wickelkerns 12 bezüglich des alten Wickelkerns 14 und der Wickelwalze 18 möglich. Basically, every combination is between the specific design the cutting device and the arrangement of the new winding core 12 possible with respect to the old winding core 14 and the winding roller 18.

Die Transporteinrichtung der Schneidvorrichtung kann auch einen auf einer Linearführung zwangsgeführten Schlitten umfassen, der zu Beginn des Trennvorgangs impulsartig beschleunigt und über die volle Breite der Papierbahn gewissermaßen geschossen wird.The transport device of the cutting device can also be one a linear guide include positively guided carriage, the beginning of the separation process accelerated impulsively and over the full width of the Paper web is shot as it were.

Die Transporteinrichtung 36, 36', 36'' der Schneidvorrichtung sowie das Betätigungsorgan 34 können mit dem neuen Wickelkern 12 - z. B. über mittels des neuen Wickelkerns 12 mitgeführte Elemente - derart gekoppelt sein, daß sich die Schneidvorrichtung beim Einschwenken des neuen Wickelkerns 12 an die Wickelwalze 18 heran - unabhängig von der Position des neuen Wickelkerns 12 - stets in einer optimalen Position zum Durchtrennen der Papierbahn 10 befindet.The transport device 36, 36 ', 36' 'of the cutting device and the Actuator 34 can with the new winding core 12 - z. B. about elements carried by means of the new winding core 12 - coupled in this way be that the cutting device when swiveling the new Winding core 12 to the winding roller 18 - regardless of the position of the new winding core 12 - always in an optimal position for Cutting the paper web 10 is located.

Ein Vorteil der Erfindung besteht darin, daß die Einschwenkbewegung des neuen Wickelkerns 12 an die Wickelwalze 18 heran für das Durchtrennen der Papierbahn 10 nicht unterbrochen werden muß. An advantage of the invention is that the pivoting movement of the new winding core 12 to the winding roller 18 for cutting the paper web 10 does not have to be interrupted.

BezugszeichenlisteReference list

1010th
Materialbahn, PapierbahnMaterial web, paper web
10a, 10'a10a, 10'a
neuer Bahnanfangnew path start
10b10b
führende Kanteleading edge
1212th
neuer Wickelkernnew winding core
1414
alter Wickelkernold winding core
1616
WickelrolleWinding roll
1818th
WickelwalzeWinding roller
20, 2120, 21
Spaltgap
24, 24', 24''24, 24 ', 24' '
Messerknife
2626
Düsejet
2828
Zylinder-Kolben-EinheitCylinder-piston unit
3232
AndrückwalzePressure roller
3434
BetätigungsorganActuator
36, 36', 36''36, 36 ', 36' '
TransporteinrichtungTransport device
3838
Trägercarrier
4040
EndlosorganEndless organ
4242
UmlenkrollenPulleys
4444
WickelschlittenWinding carriage
46, 46'46, 46 '
SchnittlinienCutting lines
AA
Laufrichtung des MessersDirection of the knife
BB
Laufrichtung der Materialbahn bzw. PapierbahnDirection of travel of the material web or paper web
CC.
Drehrichtung des neuen WickelkernsDirection of rotation of the new winding core

Claims (29)

Verfahren zum Durchtrennen einer laufenden Materialbahn (10), insbesondere einer Papierbahn, bei dem die Materialbahn nacheinander auf mehrere Wickelkerne (12, 14), insbesondere Tamboure, aufgewickelt und jeweils mit dem Aufwickeln auf einen neuen Wickelkern (12) begonnen wird, wenn eine auf einem vorherigen alten Wickelkern (14) gebildete Wickelrolle (16) einen vorbestimmten Durchmesser erreicht hat, wobei der neue Wickelkern (12) zwischen eine Wickelwalze (18), insbesondere eine Tragwalze, und den alten Wickelkern (14), dem die Materialbahn (10) über die Wickelwalze (18) zugeführt wird, gebracht und die laufende Materialbahn (10) in dem Bereich zwischen einem Spalt (20), der von der Wickelwalze (18) und dem neuen Wikkelkern (12) gebildet wird, und der auf dem alten Wickelkern (14) gebildeten Wickelrolle (16) durchtrennt wird, dadurch gekennzeichnet, daß die Materialbahn (10) mittels wenigstens einer Schneidvorrichtung, die in einer zur Materialbahn (10) etwa parallelen Ebene relativ zur Materialbahn (10) bewegt wird, vollständig durchtrennt wird. Method for severing a running material web (10), in particular a paper web, in which the material web is wound up one after the other onto a plurality of winding cores (12, 14), in particular reels, and in each case the winding onto a new winding core (12) is started when one opens a previous old winding core (14) formed winding roll (16) has reached a predetermined diameter, wherein the new winding core (12) is brought between a winding roller (18), in particular a carrier roller, and the old winding core (14), to which the material web (10) is fed via the winding roller (18), and the running material web (10) in the area between a gap (20) which is formed by the winding roller (18) and the new winding core (12) and which is cut through the winding roller (16) formed on the old winding core (14), characterized by that the material web (10) is completely severed by means of at least one cutting device which is moved relative to the material web (10) in a plane approximately parallel to the material web (10). Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Schneidvorrichtung zumindest im wesentlichen senkrecht zur Laufrichtung B der Materialbahn (10) bevorzugt derart bewegt wird, daß eine schräge Schnittlinie (46) erzeugt wird. Method according to claim 1,
characterized by that the cutting device is preferably moved at least substantially perpendicular to the running direction B of the material web (10) in such a way that an oblique cutting line (46) is produced. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Schneidvorrichtung schräg zur Laufrichtung B der Materialbahn (10) bevorzugt mit einer der Laufrichtung B der Materialbahn (10) entgegengesetzten Parallelkomponente bewegt wird. Method according to claim 1,
characterized by that the cutting device is moved obliquely to the running direction B of the material web (10) preferably with a parallel component opposite to the running direction B of the material web (10). Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Schneidvorrichtung kontinuierlich über die gesamte Breite der Materialbahn (10) hinweg bewegt wird. Method according to at least one of the preceding claims,
characterized by that the cutting device is moved continuously over the entire width of the material web (10). Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Schneidvorrichtung während des Durchtrennens der Materialbahn (10) mit einer bevorzugt zumindest näherungsweise konstanten Geschwindigkeit von vorzugsweise etwa 10 bis 40 m/s bewegt wird. Method according to at least one of the preceding claims,
characterized by that the cutting device is moved during the severing of the material web (10) at a preferably at least approximately constant speed of preferably about 10 to 40 m / s. Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Schneidvorrichtung vor dem Durchtrennen der Materialbahn (10) beschleunigt wird. Method according to at least one of the preceding claims,
characterized by that the cutting device is accelerated before severing the material web (10). Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Schneidvorrichtung wenigstens ein Messer (24, 24', 24''), ein rotierendes, bevorzugt gezahntes Schneiderad, einen Laser oder eine Düse (26) zum Ausstoßen eines Wasserstrahls umfaßt. Method according to at least one of the preceding claims,
characterized by that the cutting device comprises at least one knife (24, 24 ', 24''), a rotating, preferably toothed cutting wheel, a laser or a nozzle (26) for ejecting a water jet. Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß wenigstens zwei Schneidvorrichtungen in einander entgegengesetzten Richtungen zumindest näherungsweise senkrecht zur Laufrichtung B der Materialbahn (10) mit bevorzugt zumindest näherungsweise konstanter Geschwindigkeit bewegt werden. Method according to at least one of the preceding claims,
characterized by that at least two cutting devices are moved in opposite directions at least approximately perpendicular to the direction of travel B of the material web (10) at a preferably at least approximately constant speed. Verfahren nach Anspruch 7,
dadurch gekennzeichnet, daß die Schneidvorrichtungen zum Durchtrennen der Materialbahn (10) bevorzugt an in Laufrichtung B der Materialbahn (10) beabstandeten Stellen der Materialbahn (10) jeweils zumindest näherungsweise mittig bezüglich der Querrichtung angesetzt werden. Method according to claim 7,
characterized by that the cutting devices for severing the material web (10) are preferably at least approximately centered with respect to the transverse direction at points of the material web (10) spaced apart in the running direction B of the material web (10). Verfahren nach dem Oberbegriff von Anspruch 1,
dadurch gekennzeichnet, daß die Materialbahn (10) mittels wenigstens zwei Schneidvorrichtungen, die bevorzugt in einer zur Materialbahn (10) etwa parallelen Ebene relativ zur Materialbahn (10) bewegt werden, durchtrennt wird. Method according to the preamble of claim 1,
characterized by that the material web (10) is cut by means of at least two cutting devices, which are preferably moved in a plane approximately parallel to the material web (10) relative to the material web (10). Verfahren nach Anspruch 10,
dadurch gekennzeichnet, daß jede Schneidvorrichtung gemäß zumindest einem der Ansprüche 2 bis 9 ausgebildet ist und/oder verwendet wird. A method according to claim 10,
characterized by that each cutting device is designed and / or used according to at least one of claims 2 to 9. Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Materialbahn (10) im Bereich eines freien Laufweges vom neuen Wickelkern (12) zum alten Wickelkern (14) durchtrennt wird. Method according to at least one of the preceding claims,
characterized by that the material web (10) is severed in the area of a free path from the new winding core (12) to the old winding core (14). Verfahren nach zumindest einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, daß die Materialbahn (10) in einem den neuen Wickelkern (12) berührenden Bereich durchtrennt wird. Method according to at least one of claims 1 to 11,
characterized by that the material web (10) is severed in an area touching the new winding core (12). Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß während des Durchtrennens der Materialbahn (10) die Drehachse des neuen Wickelkerns (12) oberhalb einer die Drehachse des alten Wickelkerns (14) enthaltenden horizontalen Ebene liegt. Method according to at least one of the preceding claims,
characterized by that during the severing of the material web (10) the axis of rotation of the new winding core (12) lies above a horizontal plane containing the axis of rotation of the old winding core (14). Verfahren nach zumindest einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß während des Durchtrennens der Materialbahn (10) die Drehachse des neuen Wickelkerns (12) im wesentlichen in einer die Drehachse des alten Wickelkerns (14) enthaltenden horizontalen Ebene liegt. Method according to at least one of claims 1 to 13,
characterized by that during the severing of the material web (10) the axis of rotation of the new winding core (12) lies essentially in a horizontal plane containing the axis of rotation of the old winding core (14). Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß nach dem Durchtrennen der Materialbahn (10) der neue Bahnanfang (10a, 10'a) auf den neuen Wickelkern (12) insbesondere durch Blasen, Anfeuchten, Leimen und/oder Vorsehen von Klebestreifen aufgebracht wird. Method according to at least one of the preceding claims,
characterized by that after cutting the material web (10), the new web start (10a, 10'a) is applied to the new winding core (12), in particular by blowing, moistening, gluing and / or providing adhesive strips. Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Geschwindigkeit der Materialbahn (10) beim Durchtrennen der Materialbahn (10) nicht verringert wird. Method according to at least one of the preceding claims,
characterized by that the speed of the material web (10) is not reduced when cutting the material web (10). Verfahren nach zumindest einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der neue Wickelkern (12) beim Einbringen zwischen die Wickelwalze (18) und den alten Wickelkern (14) in die Materialbahn (10) eingetaucht wird. Method according to at least one of the preceding claims,
characterized by that the new winding core (12) is inserted into the material web (10) when it is introduced between the winding roller (18) and the old winding core (14). Vorrichtung zur Durchführung eines Verfahrens nach zumindest einem der vorhergehenden Ansprüche mit wenigstens einer Schneidvorrichtung,
dadurch gekennzeichnet, daß die Schneidvorrichtung zum vollständigen Durchtrennen der Materialbahn (10) in einer zur Materialbahn (10) etwa parallelen Ebene relativ zur Materialbahn (10) bewegbar ist. Device for carrying out a method according to at least one of the preceding claims with at least one cutting device,
characterized by that the cutting device can be moved relative to the material web (10) in a plane approximately parallel to the material web (10) in order to completely cut through the material web (10). Vorrichtung nach Anspruch 19,
dadurch gekennzeichnet, daß die Schneidvorrichtung über die gesamte Breite der Materialbahn (10) bewegbar ist. Device according to claim 19,
characterized by that the cutting device is movable over the entire width of the material web (10). Vorrichtung nach Anspruch 19 oder 20,
dadurch gekennzeichnet, daß eine Transporteinrichtung (36'') der Schneidvorrichtung wenigstens eine Zylinder-Kolben-Einheit (28) umfaßt, deren Kolben an einem Ende die Schneidvorrichtung trägt. Device according to claim 19 or 20,
characterized by that a transport device (36 '') of the cutting device comprises at least one cylinder-piston unit (28), the piston of which carries the cutting device at one end. Vorrichtung nach Ansprüche 19 oder 20,
dadurch gekennzeichnet, daß eine Transporteinrichtung (36, 36') der Schneidvorrichtung ein um limlenkrollen (42) gelegtes, bevorzugt ketten- oder riemenartiges Endlosorgan (40) umfaßt, das auf seiner Außenseite die Schneidvorrichtung trägt. Device according to claims 19 or 20,
characterized by that a transport device (36, 36 ') of the cutting device comprises a preferably chain-like or belt-like endless member (40) which is placed around limlen rollers (42) and carries the cutting device on its outside. Vorrichtung nach zumindest einem der Ansprüche 19 bis 21,
dadurch gekennzeichnet, daß die Wickelkerne (12, 14) mit einem elastisch verformbaren, insbesondere aus einem verschleißfesten Kunststoff, vorzugsweise aus Polyurethan, hergestellten Bezug versehen sind. Device according to at least one of claims 19 to 21,
characterized by that the winding cores (12, 14) are provided with an elastically deformable, in particular made of a wear-resistant plastic, preferably made of polyurethane. Vorrichtung nach zumindest einem der Ansprüche 19 bis 21,
dadurch gekennzeichnet, daß ein Bezug der Wickelkerne (12, 14) jeweils aus Metall und der Bezug der Wickelwalze (18) elastisch verformbar, insbesondere aus einem verschleißfesten Kunststoff, vorzugsweise aus Polyurethan, hergestellt ist. Device according to at least one of claims 19 to 21,
characterized by that a covering of the winding cores (12, 14) is made of metal and the covering of the winding roller (18) is elastically deformable, in particular made of a wear-resistant plastic, preferably of polyurethane. Vorrichtung nach zumindest einem der Ansprüche 17 bis 24,
dadurch gekennzeichnet, daß die Schneidvorrichtung eine auf den neuen Wickelkern (12) gerichtete Düse (26) zum Ausstoßen eines Wasserstrahls umfaßt. Device according to at least one of claims 17 to 24,
characterized by that the cutting device comprises a nozzle (26) directed towards the new winding core (12) for ejecting a water jet. Vorrichtung nach zumindest einem der Ansprüche 17 bis 25,
dadurch gekennzeichnet, daß wenigstens zwei bevorzugt in Laufrichtung B der Materialbahn (10) beabstandete Schneidvorrichtungen vorgesehen sind, die in einander entgegengesetzten Richtungen zumindest näherungsweise senkrecht zur Laufrichtung B der Materialbahn (10) bewegbar sind. Device according to at least one of claims 17 to 25,
characterized by that at least two cutting devices, preferably spaced apart in the direction B of the material web (10), are provided, which can be moved in opposite directions at least approximately perpendicular to the direction B of the material web (10). Vorrichtung nach dem Oberbegriff von Anspruch 19,
dadurch gekennzeichnet, daß wenigstens zwei Schneidvorrichtungen vorgesehen sind, die bevorzugt in einer zur Materialbahn (10) etwa parallelen Ebene relativ zur Materialbahn (10) bewegbar sind. Device according to the preamble of claim 19,
characterized by that at least two cutting devices are provided, which are preferably movable relative to the material web (10) in a plane approximately parallel to the material web (10). Vorrichtung nach Anspruch 27,
dadurch gekennzeichnet, daß jede Schneidvorrichtung gemäß zumindest einem der Ansprüche 20 bis 26 ausgebildet ist. Device according to claim 27,
characterized by that each cutting device is designed according to at least one of claims 20 to 26. Schneidvorrichtung zum Durchtrennen einer laufenden Materialbahn (10) für eine Vorrichtung nach zumindest einem der Ansprüche 19 bis 28.Cutting device for cutting through a running material web (10) for a device according to at least one of the claims 19 to 28.
EP99114472A 1998-10-22 1999-07-23 Method and device for severing a running web Expired - Lifetime EP0997417B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19848810 1998-10-22
DE19848810A DE19848810A1 (en) 1998-10-22 1998-10-22 Cutting continuous moving material sheet involves use of cutting unit which is movable relative to material sheet in plane substantially parallel to material sheet

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EP0997417A1 true EP0997417A1 (en) 2000-05-03
EP0997417B1 EP0997417B1 (en) 2003-10-15

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AT (1) ATE252045T1 (en)
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Also Published As

Publication number Publication date
DE59907360D1 (en) 2003-11-20
EP0997417B1 (en) 2003-10-15
ATE252045T1 (en) 2003-11-15
DE19848810A1 (en) 2000-04-27

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