EP0997418B1 - 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
EP0997418B1
EP0997418B1 EP99114488A EP99114488A EP0997418B1 EP 0997418 B1 EP0997418 B1 EP 0997418B1 EP 99114488 A EP99114488 A EP 99114488A EP 99114488 A EP99114488 A EP 99114488A EP 0997418 B1 EP0997418 B1 EP 0997418B1
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EP
European Patent Office
Prior art keywords
severing
web
roll
blown air
elements
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
EP99114488A
Other languages
German (de)
French (fr)
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EP0997418A1 (en
Inventor
Walter Kaipf
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
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Voith Paper Patent GmbH
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Filing date
Publication date
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Publication of EP0997418A1 publication Critical patent/EP0997418A1/en
Application granted granted Critical
Publication of EP0997418B1 publication Critical patent/EP0997418B1/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/10—Making cuts of other than simple rectilinear form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/002—Precutting and tensioning or breaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/02—Tearing
    • 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
    • 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

Definitions

  • the present invention relates to a method for severing a running material web, in particular a paper web in a winding device when changing the reel, in which a separating device between a winding roller and an empty reel on the one hand and a drum carrying a wrap formed in the device on the other hand, is moved into the web path, the material web by having a plurality of separating elements arranged side by side Separating device across the width of the material web one after the other is severed in several places, and a device for Implementation of such a procedure.
  • Winding devices of the type mentioned here are, for example used at the end of a machine to produce a material web and serve for the continuous winding of the material web on one Tambour. After completing a wrap, that is, after reaching it a desired winding diameter, the material web must be cut and the previous drum is replaced by an empty drum, on which the next roll is then formed. exceptionally a reel change can take place when the winding is still has not reached the normally desired diameter.
  • a method and an apparatus for performing such Drum changes are from PCT publication WO 96/11868 known.
  • the entire is used to cut the paper web Knife blade spanning web width used for cutting the paper web from a rest position in the path of the paper web is moved.
  • the German published application DE-OS 23 01 193 discloses a device for changing rolls and cross cutting high-speed ones Sheets in multiple winding machines. This is a cut a rigid toothed cutting knife between the running material web a winding roller and an empty reel on the one hand and an in the device formed reel carrying reel on the other hand in the Web path moves, the web of material through the toothed cutting knife across the width of the material web in succession in several places is severed.
  • the straight dividing line runs in relation to the Material web along a line inclined to the web running direction.
  • a blow pipe is located at a distance from the toothed cutting knife, which put the tip of the new start of the path on the empty sleeve should.
  • German patent application DE 44 01 804 A1 discloses Process using a spanning the entire web width Separating device, in particular a knife blade, for cutting the paper web from a rest position in the path of the paper web is moved. There is a web-wide severing of the running paper web when generating a perpendicular to the direction of the Material web running dividing line instead, with the running paper web severed without making a transfer strip and then by means of a blow pipe against the outer surface of the new one Drum is blown.
  • the present invention has for its object an improved Method of the type mentioned and an apparatus for carrying it out to specify such a procedure.
  • This object is achieved in that the separation points based on the Material web inclined along one to the web running direction and zigzag lie over the line width and that the through the Separation process created new web start of the material web by means of Area of the separating elements of blowing air escaping in the direction of the Empty drum is moved.
  • the material web is severed in such a way that that there is a separating edge inclined to the web running direction results.
  • the new beginning of the path is blown in with Moved towards the empty reel. This can ensure a safe performance guaranteed at the start of the web on the empty reel.
  • a device is used to carry out the method according to the invention used, which is characterized in that the separating elements on a substantially extending over the width of the web Separating device are arranged, which starting from a rest position in a separation position and is movable back, wherein the separators are arranged so that they move when moving the separator several separation points in succession in the separation position generate, based on the material web along one to the web running direction inclined and zigzag across the width of the web Line lie and that on the separators blowing air nozzles for support the performance of the new beginning of the material web on the empty reel.
  • the separating device is in the form of a supporting beam, arranged on the side of the material web facing away from the empty reel is trained.
  • the supporting beam is of this type pivoted that the release agent with the in the direction of web looks at the forefront one after the other on the material web act. This configuration ensures a complete and clean Separation of the material web across the entire width.
  • the separating device is according to a second embodiment as one Rotationally driven separating roller, on the roller shell of several separating elements are arranged along at least one spiral line.
  • the peripheral speed of the separation roller can be the web running speed correspond, but it can also be smaller or larger than these be.
  • the arrangement of the separating roller on the is also particularly suitable the side of the material web facing away from the empty drum.
  • the movement of the The separation roller between the rest position and the separation position can be without Impairment of the empty reel.
  • the blowing air nozzles can each according to an embodiment of the invention arranged directly next to a separating element on the separating roller and from Blowing air can be applied to the inside of the separating roller.
  • a other embodiment of the invention can on the outside of the Roller jacket of the separating roller but also one or more blow air pipes be provided with blowing air nozzles.
  • the air volume is thereby advantageously kept low. This results in a quick build-up of pressure and also has the advantage that the leakage air loss is reduced.
  • the blown air pipes are preferably parallel to the separating elements arranged in a spiral line. The blown air thus has an advantageous effect directly at the respective separating edge.
  • the separating elements are along several, alternating in opposite directions and arranged over the roller width of contiguous spiral lines. This configuration enables a zigzag-shaped separating edge to be produced , the tips of which, depending on the arrangement of the spiral lines in Point the web running direction or in the opposite direction.
  • the spiral lines can be one or more times the circumference of the Include separation roller. But it is also possible to provide the spiral lines in such a way that they only cover part of the circumference of the separating roller.
  • This embodiment has the advantage that the separation roller with its Separating elements free area are first created on the material web can. The timing of the creation and rotation of the This makes the separating roller easier.
  • control means are provided through which the separating roller can be successively set in rotation, the blowing air nozzles can be charged with blowing air and the separating roller is movable into its disconnected position, the action on the blowing air nozzles with blowing air, preferably immediately before immersing the Separating roller into the web of material. Accordingly, in reverse Order the separating roller moves back to its starting position, the rotation of the separation roller stopped and the blowing air switched off.
  • the Separation process can hereby be automated in an advantageous manner.
  • control means are provided by which it is ensured that the rotation in the The separating roller considers the foremost separating element of each spiral line first acts on the material web.
  • the control means thus ensure that a complete and across the entire width of the web clean separation takes place.
  • the separating device is transverse across the web width, on which several separating elements are arranged next to each other distributed over the web width, and with means by which the separating elements are offset from one another in time can be caused to act on the material web is provided.
  • the carrier with the release agents is in a fixed separation position brought. The introduction of several separation points across the web width is then effected in that the separating elements by suitable Funds are put into action one after the other.
  • a rest position in which the knife extend in the web running direction next to the material web
  • a separation position in which the knives cross the path of the web, pivotable are arranged.
  • the blades are preferably activated by a camshaft is rotatably driven below the knife, the cams Raise the knife depending on the rotational position of the camshaft or lower.
  • the blowing air nozzles are special each arranged between two separating elements. The blowing of the new formed web start again takes place directly at the separating edge.
  • the blowing air nozzles are special each arranged between two separating elements. The blowing of the new formed web start again takes place directly at the separating edge.
  • Knives in particular are provided as separating elements in all variants, the knives having a straight or a serrated edge can. Good results could be achieved with knives as separating elements be achieved. It can also be the case with the separating elements around a laser or pressurized water jet or other separating elements act.
  • Figure 1 shows a winding device with a winding roller 1 and a reel 2 a formed in the device and carrying drum 2 a on a winding carriage 3 which can be displaced in the direction of the arrow I. is rotatably mounted.
  • the winding carriage 3 with the winding 2 carrying Drum 2a has already moved into the drum change position.
  • the normal winding position, in which the winding 2 with the winding roller 1 in Contact is indicated by a dash-dotted line.
  • an empty drum 5 is placed on the winding roller 1.
  • the one according to the invention Separator arranged below the material web 4 and between the winding roller 1 and the empty reel 5 on the one hand and the winding 2 on the other hand.
  • Separator includes a separation roller 6, on two swivel arms 7, of which only one is visible, over a motor 8 is rotatably driven.
  • the swivel arms 7 with the Separating roller 6 are via lifting cylinder 9 between a dash-dotted line Rest position and that shown with solid lines Separation position pivotable according to arrow II.
  • the separation roller 6 is on its outer circumference with knives 10 as separation elements and provided with blown air nozzles 11 in the area of the knives 10.
  • the blown air nozzles 11 are from a pump 13 or a valve 12 Storage volume 14 can be charged with blown air.
  • the control of the Valve 12 takes place via a control unit 15, which is also the lifting cylinder 9 and the motor 8 controls the rotation of the separation roller 6.
  • the knives 10 are on the Separating roller 6 arranged along two spiral lines 18 and 19 by one common point 17 in the middle of the separating roller 6 starting in opposite directions run outwards.
  • Each spiral line 18 and 19 includes the separation roller 6 exactly once.
  • the spiral lines 18 and 19 can Separating roller 6 also include less or more than once, for example 1.5 or twice. This can reduce the inclination of the cutting edge to the web running direction III can be selected in the desired manner.
  • the knives 10 are several along Partial spiral lines 20 arranged.
  • the spiral lines 20 run alternately opposite to each other and connected to each other, so that a zigzag line is formed, which extends over a peripheral portion of the Separating roller 6 extends while the remaining circumference of the separating roller 6 is free of knives.
  • the separating roller 6 has its Blown air pipes 21 on the outside, which are parallel to the knives 10, that is also extend spirally around the separation roller 6.
  • the blow air pipes 21 are provided with blowing air nozzles 11 through which the blowing air exits can.
  • the blown air nozzles 11 can thereby be close to the knives 10 be placed without the entire interior of the separating roller 6 with Compressed air would have to be filled. This accelerates the pressure build-up.
  • the winding of the material web 4 onto the drum 2a takes place according to Arrow III, which indicates the direction of web travel, and arrow IV, which denotes the winding direction of the drum 2a.
  • the winding roller 1 via a device 16 to the drum 2a or the ones located thereon Wrapped 2 pressed. If the drum 2a is almost fully wound, this is shown over the carriage 3 in the solid line Move the reel change position. Then an empty drum 5 applied to the winding roller 1 and the separating device according to the invention activated.
  • the separating roller 6 is set in rotation so that its peripheral speed at least approximately the material running speed equivalent. Then the separating roller 6 from its rest position to her Separation position pivoted up and the valve 12 opened to compressed air to blow through the blowing air nozzles 11. Swiveling the separation roller up 6 is timed with their rotation so that the knife 10 on the roller 6 in the desired chronological order with the material web 4 engage.
  • the control is carried out so that the Knife 10 in the middle of the separating roller 6, which at the arrow V indicated Direction of rotation of the roller 6 is the foremost knife, first comes into engagement with the material web 4. With further rotation of the roller 6, the remaining knives 10 arrive one after the other on the left and right of the center of the roller with the material web 4 in engagement. Since the material web 4 at the same time continues, there is an arrow-shaped cutting edge with in Arrow direction arrow III. By reverse order the knife 10 on the separation roller and start cutting with the An arrow-shaped cutting edge can be used with both outer knives arrow head pointing against the direction of web travel III.
  • control can be designed in this way be that first the knife-free area of the separating roller 6 with the material web 4 engages. This simplifies control.
  • FIG. 5 shows only a section of a winding device with winding roller 1 and winding 2 still in the winding position. At the same time is already here an empty drum 5 applied to the winding roller 1 is shown. Below the winding roller 1 and the empty reel 5 is the invention Separator arranged. A support beam 23 is on swivel arms 22 also hinged, which on its top with a Variety of knives 10 is provided. As can be seen in particular in FIG. 6 sees, the knives 10 are offset laterally and in height to each other the cutter bar 23 arranged. By swiveling the cutter bar up 23, the knives 10 arrive at different times with the material web 4 engaged. By simultaneously continuing to run the material web 4, this results in a cutting edge inclined to the web running direction III.
  • the device is controlled in the same way as in the previous one variant described by the separation device according to the invention is swung up when changing the reel. Again, you can choose between Blower air nozzles 11 located on the blades 10 when pivoting upward Compressed air are applied to the formed new beginning of the path press the empty reel 5.
  • a carrier 24 is attached, on which the knife 10 can be pivoted in this way are attached so that they are between a non-engaged position in which they are located below the material web 4 and are parallel to it extend, and an engagement position are pivotable, in which they run transversely to the material web 4 and with the swivel arms swung up 22 cross them.
  • a camshaft 25 arranged below the knife 10, the cams 26, the knife 10 depending on the Raise or lower the rotational position of the camshaft 25.
  • the camshaft 25 is driven in rotation so that the cams 26 are the knives 10 Swing up into the path of the material web 4.
  • the cams 26 are distributed on the camshaft 25 so that the knife 10 with can be swiveled up with a time offset that the desired Form of the separating edge created.
  • the knife in the middle the carrier 24 are pivoted up first, and then one after the other from the inside outwards Knife 10. Due to the simultaneous movement of the material web 4 this creates an arrow-shaped cut edge. Can accordingly other desired cut edges by swiveling up at different times the knife 10 are formed, for example a zigzag shape.
  • the new beginning of the path formed is preferred pressed against the empty drum 5 by blowing air.
  • blowing air are preferred provided on the carrier 24 between the knives 10 blowing air nozzles 11, which can be pressurized with compressed air.
  • the knives can each have a smooth cutting edge or serrated be trained.
  • the teeth can have an angle of approx. Have 30 ° and be about 40 mm high.
  • the blowing air is introduced preferably via a compressed air reservoir, which in turn via a Pump can be filled. This allows the compressed air to quickly reach the desired level Size will be provided.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

In a cutter device the cutting prints are located along a line, which is at an angle to the direction of movement of the paper. The new front paper end created by the cutting process is moved towards the empty reel-spool by blown air. A cutter device (6) is moved into the path of the paper between a winding roller (1) and an empty reel-spool on one side, and a reel-spool (2a) with a paper coil (2). The paper length (4) is cut several times across its width by the cutter, so that the cutting prints are located along a line, which is at an angle to the direction of movement (III) of the paper. The new front paper end created by the cutting process is moved towards the empty reel-spool (5) by blown air. The cutter device consists of a driven rotating cutter roller, which moves between rest and cutting positions, and has several cutter elements (10) positioned on its jacket along one or more spiral lines. The rotary speed of the roller is almost synchronized with that of the paper.

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Durchtrennen einer laufenden Materialbahn, insbesondere einer Papierbahn in einer Aufwickelvorrichtung beim Tambourwechsel, bei welchem eine Trennvorrichtung zwischen eine Wickelwalze und einen Leertambour einerseits und einem einen in der Vorrichtung gebildeten Wickel tragenden Tambour andererseits, in den Bahnlaufweg bewegt wird, wobei die Materialbahn durch die mehrere nebeneinander angeordnete Trennelemente aufweisende Trennvorrichtung über die Breite der Materialbahn nacheinander an mehreren Stellen durchtrennt wird, sowie eine Vorrichtung zur Durchführung eines solchen Verfahrens.The present invention relates to a method for severing a running material web, in particular a paper web in a winding device when changing the reel, in which a separating device between a winding roller and an empty reel on the one hand and a drum carrying a wrap formed in the device on the other hand, is moved into the web path, the material web by having a plurality of separating elements arranged side by side Separating device across the width of the material web one after the other is severed in several places, and a device for Implementation of such a procedure.

Wickelvorrichtungen der hier angesprochenen Art werden beispielsweise am Ende einer Maschine zur Herstellung einer Materialbahn eingesetzt und dienen zum kontinuierlichen Aufwickeln der Materialbahn auf einen Tambour. Nach Fertigstellung eines Wickels, das heißt, nach Erreichen eines gewünschten Wickeldurchmessers, muß die Materialbahn durchtrennt und der bisherige Tambour durch einen Leertambour ersetzt werden, auf welchem dann der nächste Wickel gebildet wird. Ausnahmsweise kann ein Tambourwechsel schon dann stattfinden, wenn der Wickel noch nicht den normalerweise gewünschten Durchmesser erreicht hat. Winding devices of the type mentioned here are, for example used at the end of a machine to produce a material web and serve for the continuous winding of the material web on one Tambour. After completing a wrap, that is, after reaching it a desired winding diameter, the material web must be cut and the previous drum is replaced by an empty drum, on which the next roll is then formed. exceptionally a reel change can take place when the winding is still has not reached the normally desired diameter.

Ein Verfahren und eine Vorrichtung zur Durchführung eines solchen Tambourwechsels sind aus der PCT-Offenlegungsschrift WO 96/11868 bekannt. Hierbei wird zum Durchtrennen der Papierbahn eine die gesamte Bahnbreite überspannende Messerklinge eingesetzt, die zum Durchtrennen der Papierbahn aus einer Ruheposition in den Bahnlaufweg der Papierbahn bewegt wird.A method and an apparatus for performing such Drum changes are from PCT publication WO 96/11868 known. Here, the entire is used to cut the paper web Knife blade spanning web width used for cutting the paper web from a rest position in the path of the paper web is moved.

Die deutsche Offenlegungsschrift DE-OS 23 01 193 offenbart eine Vorrichtung zum Rollenwechsel und zum Quertrennen von schnelllaufenden Bahnen bei Mehrfachwickelmaschinen. Hierbei wird zum Durchtrennen der laufenden Materialbahn ein starr gezahntes Trennmesser zwischen einer Wickelwalze und einen Leertambour einerseits und einem einen in der Vorrichtung gebildeten Wickel tragenden Tambour andererseits in den Bahnlaufweg bewegt, wobei die Materialbahn durch das gezahnte Trennmesser über die Breite der Materialbahn nacheinander an mehreren Stellen durchtrennt wird. Die geradförmige Trennlinie verläuft bezogen auf die Materialbahn längs einer zur Bahnlaufrichtung geneigten Linie. In räumlicher Entfernung zum gezahnten Trennmesser ist ein Blasrohr angeordnet, welches den Zipfel des neuen Bahnanfangs an die leere Hülse anlegen soll.The German published application DE-OS 23 01 193 discloses a device for changing rolls and cross cutting high-speed ones Sheets in multiple winding machines. This is a cut a rigid toothed cutting knife between the running material web a winding roller and an empty reel on the one hand and an in the device formed reel carrying reel on the other hand in the Web path moves, the web of material through the toothed cutting knife across the width of the material web in succession in several places is severed. The straight dividing line runs in relation to the Material web along a line inclined to the web running direction. In spatial A blow pipe is located at a distance from the toothed cutting knife, which put the tip of the new start of the path on the empty sleeve should.

Weiterhin offenbart die deutsche Offenlegungsschrift DE 44 01 804 A1 ein Verfahren mit Einsatz einer die gesamte Bahnbreite überspannenden Trennvorrichtung, insbesondere einer Messerklinge, die zum Durchtrennen der Papierbahn aus einer Ruheposition in den Bahnlaufweg der Papierbahn bewegt wird. Es findet hierbei ein bahnbreites Durchtrennen der laufenden Papierbahn bei Erzeugung einer senkrecht zur Laufrichtung der Materialbahn verlaufenden Trennlinie statt, wobei die laufende Papierbahn ohne Herstellung eines Überführstreifens durchtrennt und anschließend mittels eines Blasrohrs gegen die Mantelfläche des neuen Tambours geblasen wird.Furthermore, the German patent application DE 44 01 804 A1 discloses Process using a spanning the entire web width Separating device, in particular a knife blade, for cutting the paper web from a rest position in the path of the paper web is moved. There is a web-wide severing of the running paper web when generating a perpendicular to the direction of the Material web running dividing line instead, with the running paper web severed without making a transfer strip and then by means of a blow pipe against the outer surface of the new one Drum is blown.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein verbessertes Verfahren der eingangs genannten Art sowie eine Vorrichtung zur Durchführung eines solchen Verfahrens anzugeben.The present invention has for its object an improved Method of the type mentioned and an apparatus for carrying it out to specify such a procedure.

Diese Aufgabe wird dadurch gelöst, daß die Trennstellen bezogen auf die Materialbahn längs einer zur Bahnlaufrichtung geneigt und zickzackförmig über die Bahnbreite verlaufenden Linie liegen und daß der durch den Trennvorgang entstandene neue Bahnanfang der Materialbahn mittels im Bereich der Trennelemente austretender Blasluft in Richtung auf den Leertambour bewegt wird.This object is achieved in that the separation points based on the Material web inclined along one to the web running direction and zigzag lie over the line width and that the through the Separation process created new web start of the material web by means of Area of the separating elements of blowing air escaping in the direction of the Empty drum is moved.

Eine erfindungsgemäße Vorrichtung zur Durchführung des Verfahrens ist im Anspruch 2 angegeben.An inventive device for performing the method is specified in claim 2.

Erfindungsgemäß wird die Durchtrennung der Materialbahn also so vorgenommen, daß sich eine zur Bahnlaufrichtung geneigte Trennkante ergibt.According to the invention, the material web is severed in such a way that that there is a separating edge inclined to the web running direction results.

Durch das Durchtrennen der Materialbahn an mehreren Stellen nacheinander längs einer zur Bahnlaufrichtung geneigt verlaufenden Linie wird eine besonders günstige Trennkante mit hoher Genauigkeit erzeugt. By cutting through the material web in several places one after the other along a line inclined to the web running direction produces a particularly favorable separating edge with high accuracy.

Dabei wird dabei der entstandene neue Bahnanfang mittels Blasluft in Richtung auf den Leertambour bewegt. Damit kann ein sicheres Aufführen des Bahnanfangs auf den Leertambour gewährleistet werden.The new beginning of the path is blown in with Moved towards the empty reel. This can ensure a safe performance guaranteed at the start of the web on the empty reel.

Zur Durchführung des erfindungsgemäßen Verfahrens wird eine Vorrichtung eingesetzt, die dadurch gekennzeichnet ist, dass die Trennelemente auf einem sich im wesentlichen über die Materialbahnbreite erstreckenden Trennvorrichtung angeordnet sind, welcher ausgehend von einer Ruheposition in eine Trennposition und zurück beweglich ist, wobei die Trennelemente so angeordnet sind, daß sie beim Bewegen der Trennvorrichtung in die Trennposition nacheinander mehrere Trennstellen erzeugen, die bezogen auf die Materialbahn längs einer zur Bahnlaufrichtung geneigt und zickzackförmig über die Bahnbreite verläufenden Linie liegen und daß an den Trennelementen Blasluftdüsen zur Unterstützung des Aufführens des entstandenen neuen Bahnanfangs der Materialbahn auf den Leertambour vorgesehen sind.A device is used to carry out the method according to the invention used, which is characterized in that the separating elements on a substantially extending over the width of the web Separating device are arranged, which starting from a rest position in a separation position and is movable back, wherein the separators are arranged so that they move when moving the separator several separation points in succession in the separation position generate, based on the material web along one to the web running direction inclined and zigzag across the width of the web Line lie and that on the separators blowing air nozzles for support the performance of the new beginning of the material web on the empty reel.

Die Trenneinrichtung ist gemäß einer ersten Ausführung als Tragbalken, der an der dem Leertambour abgewandten Seite der Materialbahn angeordnet ist, ausgebildet.According to a first embodiment, the separating device is in the form of a supporting beam, arranged on the side of the material web facing away from the empty reel is trained.

Nach einer weiteren Ausgestaltung der Erfindung ist der Tragbalken derart schwenkbar gelagert, daß die Trennmittel mit dem in Bahnlaufrichtung betrachtet vordersten beginnend nacheinander auf die Materialbahn einwirken. Diese Ausgestaltung gewährleistet eine vollständige und saubere Trennung der Materialbahn über die gesamte Breite. According to a further embodiment of the invention, the supporting beam is of this type pivoted that the release agent with the in the direction of web looks at the forefront one after the other on the material web act. This configuration ensures a complete and clean Separation of the material web across the entire width.

Die Trenneinrichtung ist gemäß einer zweiten Ausführung als eine drehantreibbare Trennwalze, auf deren Walzenmantel mehrere Trennelemente längs mindestens einer Spirallinie angeordnet sind, ausgebildet.The separating device is according to a second embodiment as one Rotationally driven separating roller, on the roller shell of several separating elements are arranged along at least one spiral line.

Durch Rotieren der Trennwalze werden die darauf spiralförmig angeordneten Trennelemente nacheinander mit der Materialbahn in Eingriff gebracht. Die Umfangsgeschwindigkeit der Trennwalze kann der Bahnlaufgeschwindigkeit entsprechen, sie kann aber auch kleiner oder größer als diese sein.By rotating the separating roller the spirals are arranged on it Separating elements successively brought into engagement with the material web. The peripheral speed of the separation roller can be the web running speed correspond, but it can also be smaller or larger than these be.

Besonders geeignet ist außerdem die Anordnung der Trennwalze auf der dem Leertambour abgewandten Seite der Materialbahn. Die Bewegung der Trennwalze zwischen Ruheposition und Trennposition kann so ohne Beeinträchtigung des Leertambours erfolgen.The arrangement of the separating roller on the is also particularly suitable the side of the material web facing away from the empty drum. The movement of the The separation roller between the rest position and the separation position can be without Impairment of the empty reel.

Die Blasluftdüsen können nach einer Ausgestaltung der Erfindung jeweils direkt neben einem Trennelement auf der Trennwalze angeordnet und vom Inneren der Trennwalze her mit Blasluft beaufschlagbar sein. Nach einer anderen Ausgestaltung der Erfindung können auf der Außenseite des Walzenmantels der Trennwalze aber auch ein oder mehrere Blasluftrohre mit Blasluftdüsen vorgesehen sein. Das Luftvolumen wird hierdurch vorteilhafterweise gering gehalten. Dies ergibt einen schnellen Druckaufbau und hat außerdem den Vorteil, daß der Leckluftverlust verringert ist. Die Blasluftrohre sind bevorzugt parallel zu den Trennelementen längs einer Spirallinie angeordnet. Die Blasluft wirkt dadurch vorteilhafterweise unmittelbar an der jeweiligen Trennkante. The blowing air nozzles can each according to an embodiment of the invention arranged directly next to a separating element on the separating roller and from Blowing air can be applied to the inside of the separating roller. After a other embodiment of the invention can on the outside of the Roller jacket of the separating roller but also one or more blow air pipes be provided with blowing air nozzles. The air volume is thereby advantageously kept low. This results in a quick build-up of pressure and also has the advantage that the leakage air loss is reduced. The blown air pipes are preferably parallel to the separating elements arranged in a spiral line. The blown air thus has an advantageous effect directly at the respective separating edge.

Nach einer weiteren Ausgestaltung der Erfindung sind die Trennelemente längs mehrerer, abwechselnd gegensinnig zueinander verlaufender und über die Walzenbreite aneinander anschließender Spirallinien angeordnet. Durch diese Ausgestaltung kann eine zickzackförmige Trennkante erzeugt werden, deren Spitzen wiederum je nach Anordnung der Spirallinien in Bahnlaufrichtung oder in entgegengesetzter Richtung weisen.According to a further embodiment of the invention, the separating elements are along several, alternating in opposite directions and arranged over the roller width of contiguous spiral lines. This configuration enables a zigzag-shaped separating edge to be produced , the tips of which, depending on the arrangement of the spiral lines in Point the web running direction or in the opposite direction.

In allen Fällen können die Spirallinien ein- oder mehrfach den Umfang der Trennwalze umfassen. Es ist aber auch möglich, die Spirallinien so vorzusehen, daß sie nur einen Teil des Umfangs der Trennwalze umfassen. Diese Ausgestaltung hat den Vorteil, daß die Trennwalze mit ihrem von Trennelementen freien Bereich zuerst an die Materialbahn angelegt werden kann. Das zeitliche Abstimmen des Anlegens und der Rotation der Trennwalze ist dadurch erleichtert.In all cases, the spiral lines can be one or more times the circumference of the Include separation roller. But it is also possible to provide the spiral lines in such a way that they only cover part of the circumference of the separating roller. This embodiment has the advantage that the separation roller with its Separating elements free area are first created on the material web can. The timing of the creation and rotation of the This makes the separating roller easier.

Nach einer weiteren Ausgestaltung der Erfindung sind Steuermittel vorgesehen, durch welche aufeinanderfolgend die Trennwalze in Rotation versetzbar, die Blasluftdüsen mit Blasluft beaufschlagbar und die Trennwalze in ihre Trennstellung bewegbar ist, wobei die Beaufschlagung der Blasluftdüsen mit Blasluft bevorzugt unmittelbar vor dem Eintauchen der Trennwalze in die Materialbahn erfolgt. Entsprechend wird in umgekehrter Reihenfolge die Trennwalze wieder in ihre Ausgangslage zurückbewegt, die Rotation der Trennwalze gestoppt und die Blasluft abgeschaltet. Der Trennvorgang kann hierdurch in vorteilhafter Weise automatisiert werden.According to a further embodiment of the invention, control means are provided through which the separating roller can be successively set in rotation, the blowing air nozzles can be charged with blowing air and the separating roller is movable into its disconnected position, the action on the blowing air nozzles with blowing air, preferably immediately before immersing the Separating roller into the web of material. Accordingly, in reverse Order the separating roller moves back to its starting position, the rotation of the separation roller stopped and the blowing air switched off. The Separation process can hereby be automated in an advantageous manner.

Nach einer weiteren Ausgestaltung der Erfindung sind Steuermittel vorgesehen, durch welche gewährleistet ist, daß das in Rotationsrichtung der Trennwalze betrachtet vorderste Trennelement jeder Spirallinie als erstes auf die Materialbahn einwirkt. Durch die Steuermittel wird so sichergestellt, daß über die gesamte Breite der Materialbahn eine vollständige und saubere Trennung erfolgt.According to a further embodiment of the invention, control means are provided by which it is ensured that the rotation in the The separating roller considers the foremost separating element of each spiral line first acts on the material web. The control means thus ensure that a complete and across the entire width of the web clean separation takes place.

Die Trenneinrichtung ist gemäß einer dritten Ausführung als ein sich quer über die Bahnbreite erstreckenden Träger, auf welchem mehrere Trennelemente nebeneinander über die Bahnbreite verteilt angeordnet sind, und mit Mitteln, durch welche die Trennelemente zeitlich versetzt zueinander zur Einwirkung auf die Materialbahn veranlaßbar sind, versehen ist. Bei dieser Variante wird der Träger mit den Trennmitteln in eine feste Trennposition gebracht. Das Einbringen mehrerer Trennstellen über die Bahnbreite wird dann dadurch bewirkt, daß die Trennelemente durch geeignete Mittel nacheinander in Aktion versetzt werden.According to a third embodiment, the separating device is transverse across the web width, on which several separating elements are arranged next to each other distributed over the web width, and with means by which the separating elements are offset from one another in time can be caused to act on the material web is provided. at In this variant, the carrier with the release agents is in a fixed separation position brought. The introduction of several separation points across the web width is then effected in that the separating elements by suitable Funds are put into action one after the other.

Dies kann bevorzugt dadurch realisiert werden, daß auf dem Träger mehrere Messer zwischen einer Ruhestellung, in welcher sich die Messer in Bahnlaufrichtung neben der Materialbahn erstrecken, und einer Trennstellung, in welcher die Messer den Bahnlaufweg kreuzen, verschwenkbar angeordnet sind. Durch zeitlich versetztes Einschwenken der Messer in den Bahnlaufweg werden die gewünschten Trennstellen über die Bahnbreite eingebracht. Die Form der Trennkante kann in gewünschter Weise durch entsprechend zeitlich versetztes Aktivieren der Messer erzeugt werden. So kann auch bei dieser Variante eine durchgehende schräge Trennkante, eine pfeilförmige oder eine zickzackförmige Trennkante erzeugt werden. This can preferably be achieved in that on the carrier several knives between a rest position, in which the knife extend in the web running direction next to the material web, and a separation position, in which the knives cross the path of the web, pivotable are arranged. By swiveling the knife in at different times the web path will be the desired separation points across the web width brought in. The shape of the separating edge can be as desired generated by activating the knives at different times become. A continuous sloping can also be used with this variant Separating edge, an arrow-shaped or a zigzag-shaped separating edge become.

Die Aktivierung der Messer erfolgt bevorzugt durch eine Nockenwelle, die unterhalb der Messer drehantreibbar gelagert ist, wobei die Nocken die Messer in Abhängigkeit von der Drehstellung der Nockenwelle anheben oder absenken.The blades are preferably activated by a camshaft is rotatably driven below the knife, the cams Raise the knife depending on the rotational position of the camshaft or lower.

Nach einer weiteren Ausgestaltung der Erfindung sind auf dem Träger Blasluftdüsen angeordnet. Die Blasluftdüsen sind dabei insbesondere jeweils zwischen zwei Trennelementen angeordnet. Das Anblasen des neu gebildeten Bahnanfangs erfolgt dadurch wieder unmittelbar an der Trennkante.According to a further embodiment of the invention are on the carrier Blow air nozzles arranged. The blowing air nozzles are special each arranged between two separating elements. The blowing of the new formed web start again takes place directly at the separating edge.

Nach einer weiteren Ausgestaltung der Erfindung sind auf dem Träger Blasluftdüsen angeordnet. Die Blasluftdüsen sind dabei insbesondere jeweils zwischen zwei Trennelementen angeordnet. Das Anblasen des neu gebildeten Bahnanfangs erfolgt dadurch wieder unmittelbar an der Trennkante.According to a further embodiment of the invention are on the carrier Blow air nozzles arranged. The blowing air nozzles are special each arranged between two separating elements. The blowing of the new formed web start again takes place directly at the separating edge.

Als Trennelemente sind bei allen Varianten insbesondere Messer vorgesehen, wobei die Messer eine gerade oder eine gezackte Schneide aufweisen können. Mit Messern als Trennelementen konnten gute Trennergebnisse erzielt werden. Bei den Trennelementen kann es sich aber auch um einen Laser- oder Druckwasserstrahl oder andere Trennelemente handeln.Knives in particular are provided as separating elements in all variants, the knives having a straight or a serrated edge can. Good results could be achieved with knives as separating elements be achieved. It can also be the case with the separating elements around a laser or pressurized water jet or other separating elements act.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Es zeigen, jeweils in schematischer Darstellung,

Figur 1
eine Seitenansicht einer Wickelvorrichtung mit einer erfindungsgemäßen Trennvorrichtung mit Trennwalze,
Figur 2
eine perspektivische Darstellung einer bei der Vorrichtung von Figur 1 einsetzbaren Trennwalze,
Figur 3
eine Variante zu Figur 2,
Figur 4
einen Querschnitt durch eine weitere Variante zu Figur 2,
Figur 5
eine Seitenansicht eines Teils einer Wickelvorrichtung mit erfindungsgemäßer Trennvorrichtung mit auf einem Tragbalken angeordneten Trennelementen,
Figur 6
eine Draufsicht auf den Tragbalken von Figur 5,
Figur 7
eine Seitenansicht eines Teils einer Wickelvorrichtung mit erfindungsgemäßer Trennvorrichtung mit auf einem Träger angeordneten einzeln verschwenkbaren Trennelementen und
Figur 8
eine Draufsicht auf einen Teil des Trägers von Figur 7.
An embodiment of the invention is shown in the drawing and is described below. They show, each in a schematic representation,
Figure 1
2 shows a side view of a winding device with a separating device according to the invention with a separating roller,
Figure 2
2 shows a perspective illustration of a separating roller that can be used in the device of FIG. 1,
Figure 3
a variant of Figure 2,
Figure 4
3 shows a cross section through a further variant of FIG. 2,
Figure 5
2 shows a side view of part of a winding device with a separating device according to the invention with separating elements arranged on a supporting beam,
Figure 6
5 shows a plan view of the supporting beam from FIG. 5,
Figure 7
a side view of part of a winding device with separating device according to the invention with individually pivotable separating elements arranged on a carrier and
Figure 8
a plan view of a part of the carrier of Figure 7.

Figur 1 zeigt eine Wickelvorrichtung mit einer Wickelwalze 1 und einem einen in der Vorrichtung gebildeten Wickel 2 tragenden Tambour 2a, welcher auf einem in Richtung des Pfeils I verschiebbaren Wickelschlitten 3 drehbar gelagert ist. Der Wickelschlitten 3 mit dem den Wickel 2 tragenden Tambour 2a ist bereits in die Tambourwechselposition verfahren. Die normale Wickelposition, in welcher der Wickel 2 mit der Wickelwalze 1 in Kontakt ist, ist mit strichpunktierter Linie angedeutet.Figure 1 shows a winding device with a winding roller 1 and a reel 2 a formed in the device and carrying drum 2 a on a winding carriage 3 which can be displaced in the direction of the arrow I. is rotatably mounted. The winding carriage 3 with the winding 2 carrying Drum 2a has already moved into the drum change position. The normal winding position, in which the winding 2 with the winding roller 1 in Contact is indicated by a dash-dotted line.

Oberhalb der von der Wickelwalze 1 kommenden und zum Wickel 2 führenden Materialbahn 4 ist ein Leertambour 5 an die Wickelwalze 1 angelegt. Unterhalb der Materialbahn 4 sowie zwischen der Wickelwalze 1 und dem Leertambour 5 einerseits und dem Wickel 2 andererseits ist die erfindungsgemäße Trennvorrichtung angeordnet. Sie umfaßt eine Trennwalze 6, die auf zwei Schwenkarmen 7, von denen nur einer sichtbar ist, über einen Motor 8 drehantreibbar gelagert ist. Die Schwenkarme 7 mit der Trennwalze 6 sind über Hubzylinder 9 zwischen einer strichpunktiert angedeuteten Ruhestellung und der mit durchgezogenen Linien dargestellten Trennstellung gemäß Pfeil II verschwenkbar.Above that coming from the winding roller 1 and leading to the winding 2 Material web 4, an empty drum 5 is placed on the winding roller 1. Below the material web 4 and between the winding roller 1 and the empty reel 5 on the one hand and the winding 2 on the other hand is the one according to the invention Separator arranged. It includes a separation roller 6, on two swivel arms 7, of which only one is visible, over a motor 8 is rotatably driven. The swivel arms 7 with the Separating roller 6 are via lifting cylinder 9 between a dash-dotted line Rest position and that shown with solid lines Separation position pivotable according to arrow II.

Die Trennwalze 6 ist auf ihrem Außenumfang mit Messern 10 als Trennelemente und im Bereich der Messer 10 mit Blasluftdüsen 11 versehen. Die Blasluftdüsen 11 sind über ein Ventil 12 von einer Pumpe 13 bzw. einem Speichervolumen 14 mit Blasluft beaufschlagbar. Die Steuerung des Ventils 12 erfolgt dabei über eine Steuereinheit 15, die zugleich die Hubzylinder 9 und den Motor 8 für die Rotation der Trennwalze 6 steuert.The separation roller 6 is on its outer circumference with knives 10 as separation elements and provided with blown air nozzles 11 in the area of the knives 10. The blown air nozzles 11 are from a pump 13 or a valve 12 Storage volume 14 can be charged with blown air. The control of the Valve 12 takes place via a control unit 15, which is also the lifting cylinder 9 and the motor 8 controls the rotation of the separation roller 6.

Bei der in Figur 2 dargestellten Variante sind die Messer 10 auf der Trennwalze 6 längs zweier Spirallinien 18 und 19 angeordnet, die von einem gemeinsamen Punkt 17 in der Mitte der Trennwalze 6 ausgehend gegensinnig nach außen verlaufen. Jede Spirallinie 18 und 19 umfaßt dabei die Trennwalze 6 genau einmal. Die Spirallinien 18 und 19 können die Trennwalze 6 aber auch weniger oder mehr als einmal umfassen, also beispielsweise 1,5- oder zweimal. Hierdurch kann die Neigung der Schnittkante zur Bahnlaufrichtung III in gewünschter Weise gewählt werden.In the variant shown in Figure 2, the knives 10 are on the Separating roller 6 arranged along two spiral lines 18 and 19 by one common point 17 in the middle of the separating roller 6 starting in opposite directions run outwards. Each spiral line 18 and 19 includes the separation roller 6 exactly once. The spiral lines 18 and 19 can Separating roller 6 also include less or more than once, for example 1.5 or twice. This can reduce the inclination of the cutting edge to the web running direction III can be selected in the desired manner.

Bei der in Figur 3 dargestellten Variante sind die Messer 10 längs mehrerer Teilspirallinien 20 angeordnet. Die Spirallinien 20 verlaufen dabei abwechselnd zueinander gegensinnig und schließen aneinander an, so daß eine Zickzacklinie gebildet wird, die sich über einen Umfangsabschnitt der Trennwalze 6 erstreckt, während der übrige Umfang der Trennwalze 6 frei von Messern ist. In the variant shown in FIG. 3, the knives 10 are several along Partial spiral lines 20 arranged. The spiral lines 20 run alternately opposite to each other and connected to each other, so that a zigzag line is formed, which extends over a peripheral portion of the Separating roller 6 extends while the remaining circumference of the separating roller 6 is free of knives.

Bei der in Figur 4 dargestellten Variante weist die Trennwalze 6 auf ihrer Außenseite Blasluftrohre 21 auf, die sich parallel zu den Messern 10, also ebenfalls spiralförmig um die Trennwalze 6 erstrecken. Die Blasluftrohre 21 sind mit Blasluftdüsen 11 versehen, durch welche die Blasluft austreten kann. Die Blasluftdüsen 11 können dadurch nahe an die Messer 10 gelegt werden, ohne daß der gesamte Innenraum der Trennwalze 6 mit Druckluft gefüllt werden müßte. Der Druckaufbau ist dadurch beschleunigt.In the variant shown in FIG. 4, the separating roller 6 has its Blown air pipes 21 on the outside, which are parallel to the knives 10, that is also extend spirally around the separation roller 6. The blow air pipes 21 are provided with blowing air nozzles 11 through which the blowing air exits can. The blown air nozzles 11 can thereby be close to the knives 10 be placed without the entire interior of the separating roller 6 with Compressed air would have to be filled. This accelerates the pressure build-up.

Das Aufwickeln der Materialbahn 4 auf den Tambour 2a erfolgt gemäß Pfeil III, welcher die Bahnlaufrichtung kennzeichnet, und Pfeil IV, welcher die Wickelrichtung des Tambours 2a bezeichnet. Hierfür wird die Wickelwalze 1 über eine Vorrichtung 16 an den Tambour 2a bzw. den darauf befindlichen Wickel 2 angepreßt. Ist der Tambour 2a nahezu vollgewickelt, wird dieser über den Schlitten 3 in die mit durchgezogener Linie dargestellte Tambourwechselposition verfahren. Dann wird ein Leertambour 5 an die Wickelwalze 1 angelegt und die erfindungsgemäße Trennvorrichtung aktiviert.The winding of the material web 4 onto the drum 2a takes place according to Arrow III, which indicates the direction of web travel, and arrow IV, which denotes the winding direction of the drum 2a. For this, the winding roller 1 via a device 16 to the drum 2a or the ones located thereon Wrapped 2 pressed. If the drum 2a is almost fully wound, this is shown over the carriage 3 in the solid line Move the reel change position. Then an empty drum 5 applied to the winding roller 1 and the separating device according to the invention activated.

Hierfür wird die Trennwalze 6 in Rotation versetzt, so daß ihre Umfangsgeschwindigkeit zumindest annähernd der Materiallaufgeschwindigkeit entspricht. Dann wird die Trennwalze 6 aus ihrer Ruheposition in ihre Trennposition hochgeschwenkt und das Ventil 12 geöffnet, um Druckluft durch die Blasluftdüsen 11 zu blasen. Das Hochschwenken der Trennwalze 6 wird mit deren Rotation zeitlich so abgestimmt, daß die Messer 10 auf der Walze 6 in der gewünschten zeitlichen Abfolge mit der Materialbahn 4 in Eingriff gelangen. For this purpose, the separating roller 6 is set in rotation so that its peripheral speed at least approximately the material running speed equivalent. Then the separating roller 6 from its rest position to her Separation position pivoted up and the valve 12 opened to compressed air to blow through the blowing air nozzles 11. Swiveling the separation roller up 6 is timed with their rotation so that the knife 10 on the roller 6 in the desired chronological order with the material web 4 engage.

Bei der in Figur 2 dargestellten Variante erfolgt die Steuerung so, daß das Messer 10 in der Mitte der Trennwalze 6, welches bei der mit Pfeil V angegebenen Rotationsrichtung der Walze 6 das vorderste Messer ist, zuerst mit der Materialbahn 4 in Eingriff gelangt. Bei weiterer Rotation der Walze 6 gelangen die übrigen Messer 10 links und rechts der Walzenmitte nacheinander mit der Materialbahn 4 in Eingriff. Da die Materialbahn 4 gleichzeitig weiterläuft, ergibt sich so eine pfeilförmige Schnittkante mit in Bahnlaufrichtung III weisender Pfeilspitze. Durch umgekehrte Anordnung der Messer 10 auf der Trennwalze und Beginnen des Schneidens mit den beiden außen gelegenen Messern kann eine pfeilförmige Schnittkante mit entgegen der Bahnlaufrichtung III weisender Pfeilspitze erzeugt werden.In the variant shown in Figure 2, the control is carried out so that the Knife 10 in the middle of the separating roller 6, which at the arrow V indicated Direction of rotation of the roller 6 is the foremost knife, first comes into engagement with the material web 4. With further rotation of the roller 6, the remaining knives 10 arrive one after the other on the left and right of the center of the roller with the material web 4 in engagement. Since the material web 4 at the same time continues, there is an arrow-shaped cutting edge with in Arrow direction arrow III. By reverse order the knife 10 on the separation roller and start cutting with the An arrow-shaped cutting edge can be used with both outer knives arrow head pointing against the direction of web travel III.

Bei der in Figur 3 dargestellten Variante kann die Steuerung so ausgelegt sein, daß zunächst der messerfreie Bereich der Trennwalze 6 mit der Materialbahn 4 in Eingriff gelangt. Die Steuerung ist hierdurch vereinfacht.In the variant shown in FIG. 3, the control can be designed in this way be that first the knife-free area of the separating roller 6 with the material web 4 engages. This simplifies control.

Figur 5 zeigt lediglich einen Ausschnitt einer Wickelvorrichtung mit Wikkelwalze 1 und Wickel 2 noch in Wickelposition. Zugleich ist hier bereits ein an die Wickelwalze 1 angelegter Leertambour 5 dargestellt. Unterhalb der Wickelwalze 1 und des Leertambours 5 ist die erfindungsgemäße Trennvorrichtung angeordnet. An Schwenkarmen 22 ist ein Tragbalken 23 ebenfalls schwenkbar angelenkt, welcher auf seiner Oberseite mit einer Vielzahl von Messern 10 versehen ist. Wie man insbesondere in Figur 6 sieht, sind die Messer 10 seitlich und in der Höhe zueinander versetzt auf dem Messerbalken 23 angeordnet. Durch das Hochschwenken des Messerbalkens 23 gelangen so die Messer 10 zeitlich versetzt mit der Materialbahn 4 in Eingriff. Durch das gleichzeitige Weiterlaufen der Materialbahn 4 ergibt sich damit eine zur Bahnlaufrichtung III geneigte Schnittkante.Figure 5 shows only a section of a winding device with winding roller 1 and winding 2 still in the winding position. At the same time is already here an empty drum 5 applied to the winding roller 1 is shown. Below the winding roller 1 and the empty reel 5 is the invention Separator arranged. A support beam 23 is on swivel arms 22 also hinged, which on its top with a Variety of knives 10 is provided. As can be seen in particular in FIG. 6 sees, the knives 10 are offset laterally and in height to each other the cutter bar 23 arranged. By swiveling the cutter bar up 23, the knives 10 arrive at different times with the material web 4 engaged. By simultaneously continuing to run the material web 4, this results in a cutting edge inclined to the web running direction III.

Die Steuerung der Vorrichtung erfolgt in derselben Weise wie bei der zuvor beschriebenen Variante, indem die erfindungsgemäße Trennvorrichtung beim Tambourwechsel hochgeschwenkt wird. Auch hier können zwischen den Messern 10 befindliche Blasluftdüsen 11 beim Hochschwenken mit Druckluft beaufschlagt werden, um den gebildeten neuen Bahnanfang an den Leertambour 5 anzudrücken.The device is controlled in the same way as in the previous one variant described by the separation device according to the invention is swung up when changing the reel. Again, you can choose between Blower air nozzles 11 located on the blades 10 when pivoting upward Compressed air are applied to the formed new beginning of the path press the empty reel 5.

Bei der Variante gemäß den Figuren 7 und 8 ist an den Schwenkarmen 22 ein Träger 24 angebracht, auf welchem die Messer 10 derart schwenkbar befestigt sind, daß sie zwischen einer Nichteingriffsstellung, in welcher sie sich unterhalb der Materialbahn 4 befinden und sich parallel zu dieser erstrecken, und einer Eingriffsstellung verschwenkbar sind, in welcher sie quer zur Materialbahn 4 verlaufen und bei hochgeschwenkten Schwenkarmen 22 diese kreuzen. Unterhalb der Messer 10 ist eine Nockenwelle 25 angeordnet, deren Nocken 26 die Messer 10 in Abhängigkeit von der Drehstellung der Nockenwelle 25 anheben oder absenken.In the variant according to FIGS. 7 and 8, there is 22 on the swivel arms a carrier 24 is attached, on which the knife 10 can be pivoted in this way are attached so that they are between a non-engaged position in which they are located below the material web 4 and are parallel to it extend, and an engagement position are pivotable, in which they run transversely to the material web 4 and with the swivel arms swung up 22 cross them. Below the knife 10 is a camshaft 25 arranged, the cams 26, the knife 10 depending on the Raise or lower the rotational position of the camshaft 25.

Nach Hochschwenken der Schwenkarme 22 in die Eingriffsstellung wird die Nockenwelle 25 drehangetrieben, so daß die Nocken 26 die Messer 10 in den Bahnlaufweg der Materialbahn 4 hochschwenken. Die Nocken 26 sind so auf der Nockenwelle 25 verteilt angeordnet, daß die Messer 10 mit einem zeitlichen Versatz hochgeschwenkt werden, der die gewünschte Form der Trennkante erzeugt. Beispielsweise kann das Messer in der Mitte des Trägers 24 als erstes hochgeschwenkt werden, und anschließend nacheinander von innen nach außen die sich hierzu seitlich befindenden Messer 10. Aufgrund der gleichzeitigen Fortbewegung der Materialbahn 4 wird hierdurch eine pfeilförmige Schnittkante erzeugt. Entsprechend können andere gewünschte Schnittkanten durch zeitlich versetztes Hochschwenken der Messer 10 gebildet werden, beispielsweise eine Zick-Zack-Form.After swiveling the swivel arms 22 into the engagement position the camshaft 25 is driven in rotation so that the cams 26 are the knives 10 Swing up into the path of the material web 4. The cams 26 are distributed on the camshaft 25 so that the knife 10 with can be swiveled up with a time offset that the desired Form of the separating edge created. For example, the knife in the middle the carrier 24 are pivoted up first, and then one after the other from the inside outwards Knife 10. Due to the simultaneous movement of the material web 4 this creates an arrow-shaped cut edge. Can accordingly other desired cut edges by swiveling up at different times the knife 10 are formed, for example a zigzag shape.

Auch bei dieser Variante wird der gebildete neue Bahnanfang bevorzugt durch Blasluft an den Leertambour 5 angedrückt. Hierfür sind bevorzugt auf dem Träger 24 zwischen den Messern 10 Blasluftdüsen 11 vorgesehen, die mit Druckluft beaufschlagbar sind.In this variant, too, the new beginning of the path formed is preferred pressed against the empty drum 5 by blowing air. For this are preferred provided on the carrier 24 between the knives 10 blowing air nozzles 11, which can be pressurized with compressed air.

Die Messer können jeweils eine glatte Schneide aufweisen oder gezackt ausgebildet sein. Beispielsweise können die Zacken einen Winkel von ca. 30° aufweisen und ca. 40 mm hoch sein. Das Einbringen der Blasluft erfolgt bevorzugt über einen Druckluftspeicher, welcher seinerseits über eine Pumpe befüllbar ist. Die Druckluft kann dadurch schnell in der gewünschten Größe zur Verfügung gestellt werden. The knives can each have a smooth cutting edge or serrated be trained. For example, the teeth can have an angle of approx. Have 30 ° and be about 40 mm high. The blowing air is introduced preferably via a compressed air reservoir, which in turn via a Pump can be filled. This allows the compressed air to quickly reach the desired level Size will be provided.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Wickelwalzewinding roller
22
Wickelreel
2a2a
Tambourdrummer
33
Wickelschlittenwinding carriage
44
Materialbahnweb
55
Leertambourempty spool
66
Trennwalzeseparation roller
77
Schwenkarmswivel arm
88th
Motorengine
99
Zylindercylinder
1010
Messerknife
1111
Blasluftdüseblowing air nozzle
1212
VentilValve
1313
Pumpepump
1414
DruckluftspeicherCompressed air storage
1515
Steuereinheitcontrol unit
1616
Anpreßeinheitpressing unit
1717
PunktPoint
1818
Linieline
1919
Linieline
2020
Linieline
2121
BlasluftrohrBlasluftrohr
2222
Schwenkarmswivel arm
2323
Tragbalkenstringers
2424
Trägercarrier
2525
Nockenwelle camshaft
2626
Nockencam
II
SchlittenbewegungsrichtungCarriage moving direction
IIII
Schwenkrichtung von 7Swivel direction from 7
IIIIII
BahnlaufrichtungWeb direction
IVIV
Wickelrichtung von 2Winding direction of 2
VV
Rotationsrichtung von 6Direction of rotation of 6

Claims (18)

  1. Method of severing a running web (4), in particular a paper web, in a winding apparatus during a spool change, in which a severing device (6, 23, 24) is moved into the web running path between a winding roll (1) and an empty spool (5), on one hand, and a spool (2a) carrying a roll (2) formed in the device, on the other hand, the web (4) being severed successively at a plurality of points over the width of the web (4) by the severing device (6, 23, 24) having a plurality of severing elements (10) arranged beside one another,
    characterized in that the severing points, as based on the web (4), are located along a line which is inclined with respect to the web running direction (III) and runs in a zigzag over the web width, and
    in that the new web start of the web (4), produced by the severing operation, is moved in the direction of the empty spool (5) by means of blown air emerging in the region of the severing elements (10).
  2. Device for severing a running web (4), in particular a paper web, in a winding apparatus during a spool change, in which a severing device (6, 23, 24) can be moved into the web running path between a winding roll (1) and an empty spool (5), on one hand, and a spool (2a) carrying a roll (2) formed in the device, on the other hand, the web (4) being severed successively at a plurality of points over the width of the web (4) by the severing device (6, 23, 24) having a . plurality of severing elements (10) arranged beside one another,
    characterized in that the severing elements (10) are arranged on a severing device (6, 23, 24) which extends substantially over the web width and which, starting from a rest position, can be moved into a severing position and back, the severing elements (10) being arranged such that, during the movement of the severing device (6, 23, 24) into the severing position, they successively produce a plurality of severing points which, as based on the web (4), are located along a line which is inclined with respect to the web running direction (III) and runs in a zigzag over the web width, and
    in that, on the severing elements (10), blown air nozzles (11) are provided in order to assist the threading of the new web start of the web (4) produced onto the empty spool (5).
  3. Device according to Claim 2, characterized in that the severing device is constructed as a carrier beam (23) which is arranged on the side of the web (4) that faces away from the empty spool (5).
  4. Device according to Claim 3, characterized in that the carrier beam (23) is mounted such that it can be pivoted so that the severing elements (10) act successively on the web (4), beginning with the foremost as viewed in the web running direction (III).
  5. Device according to Claim 2, characterized in that the severing device is constructed as a severing roll (6) which can be driven in rotation and on whose roll shell a plurality of dividing elements (10) are arranged along at least one spiral line (18, 19, 20).
  6. Device according to Claim 5, characterized in that means are provided by which the rotational speed of the severing roll (6) can be matched at least approximately to the web running speed.
  7. Device according to Claim 5 or 6, characterized in that the blown air nozzles (11) are in each case arranged directly beside a severing element (10) and can have blown air applied to them from the interior of the severing roll (6).
  8. Device according to Claim 5, 6 or 7, characterized in that at least one blown air pipe (21) with blown air nozzles (11) is provided on the outer side of the roll shell of the severing roll (6).
  9. Device according to Claim 8, characterized in that the blown air pipes (21) are arranged along a spiral line parallel to the severing elements (10).
  10. Device according to one of Claims 5 to 9, characterized in that the severing elements (10) are arranged on a continuous spiral line over the entire width of the severing roll (6).
  11. Device according to one of Claims 5 to 10, characterized in that control means (15) are provided by which, in succession, the severing roll (6) can be set rotating, the blown air nozzles (11) can have blown air applied to them and the severing roll (6) can be moved into its severing position, blown air being applied to the blown air nozzles (11) immediately before the severing roll (6) dips into the web (4).
  12. Device according to Claim 2, characterized in that the severing device is constructed as a carrier (24) which extends transversely over the web width and on which a plurality of severing elements (10) are arranged distributed beside one another over the web width, and is provided with means by which the severing elements (10) can be caused to act on the web (4) with a time offset in relation to one another.
  13. Device according to Claim 12, characterized in that on the carrier (24) there are arranged a plurality of knives (10) which can be pivoted between a rest position, in which the knives (10) extend beside the web (4) in the web running direction (III), and a severing position, in which the knives (10) cross the web running path.
  14. Device according to Claim 13, characterized in that underneath the knives (10) there is arranged a camshaft (25) which can be driven in rotation and whose cams (26) raise or lower the knives (10) as a function of the rotational position of the camshaft (25).
  15. Device according to Claim 12, 13 or 14, characterized in that the blown air nozzles (11) are in each case arranged between two severing elements (10).
  16. Device according to one of Claims 2 to 15, characterized in that knives (10) are provided as severing elements.
  17. Device according to Claim 16, characterized in that the knives (10) have a straight cutting edge.
  18. Device according to Claim 16, characterized in that the knives (10) have a jagged cutting edge.
EP99114488A 1998-10-22 1999-07-23 Method and device for severing a running web Expired - Lifetime EP0997418B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19848808 1998-10-22
DE19848808A DE19848808A1 (en) 1998-10-22 1998-10-22 Method for cutting a running material web and device for carrying out the method

Publications (2)

Publication Number Publication Date
EP0997418A1 EP0997418A1 (en) 2000-05-03
EP0997418B1 true EP0997418B1 (en) 2004-02-25

Family

ID=7885348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114488A Expired - Lifetime EP0997418B1 (en) 1998-10-22 1999-07-23 Method and device for severing a running web

Country Status (4)

Country Link
US (1) US6464161B1 (en)
EP (1) EP0997418B1 (en)
AT (1) ATE260216T1 (en)
DE (2) DE19848808A1 (en)

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DE10343424A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Winding machine used in papermaking and equipment separating out a transverse strip from web, includes pair of spaced blades to separate strip
DE10343453A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Coiling machine for continuously coiling paper, cardboard, tissue or other fibrous material comprises a separating unit for automatically removing a section of a material strip, and a removal unit for removing the section
US8628641B2 (en) 2012-01-30 2014-01-14 Paprima Industries Inc. Web turn-up cutting apparatus and method
EP3526395A4 (en) 2016-10-17 2019-10-30 Paprima Industries Inc. Process for turning up in a paper machine and paper manufacture
SE542363C2 (en) 2017-02-22 2020-04-14 Core Link Ab Method and apparatus for removing wrapping from rolls
CN108994365B (en) * 2018-06-19 2023-11-14 凌云工业股份有限公司 Lateral cutting device for strip-shaped cold-formed product piece

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Also Published As

Publication number Publication date
DE19848808A1 (en) 2000-04-27
DE59908631D1 (en) 2004-04-01
ATE260216T1 (en) 2004-03-15
US6464161B1 (en) 2002-10-15
EP0997418A1 (en) 2000-05-03

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