EP1020389B1 - Roll winding device - Google Patents

Roll winding device Download PDF

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Publication number
EP1020389B1
EP1020389B1 EP99125492A EP99125492A EP1020389B1 EP 1020389 B1 EP1020389 B1 EP 1020389B1 EP 99125492 A EP99125492 A EP 99125492A EP 99125492 A EP99125492 A EP 99125492A EP 1020389 B1 EP1020389 B1 EP 1020389B1
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EP
European Patent Office
Prior art keywords
knife
carrier
roll
winding
knife carrier
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Expired - Lifetime
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EP99125492A
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German (de)
French (fr)
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EP1020389A3 (en
EP1020389A2 (en
Inventor
Franz Reisinger
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Publication of EP1020389A3 publication Critical patent/EP1020389A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00Winding webs
    • B65H18/08Web-winding mechanisms
    • B65H18/14Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00Changing the web roll
    • B65H19/22Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26Cutting-off the web running to the wound web roll

Definitions

  • the invention relates to a roll winding device for Winding a material web to a winding roll with the features of the preamble of claim 1.
  • Such a roll winder is from US 4,516,735 A is known.
  • a knife is over a subcarrier attached to a lever which is about the axis of the Carrier roller is pivotable around.
  • At this Movement is still on the ejected winding roll hanging material web between another, on the Subcarrier arranged pulley and one in the Winding bed inserted wrapped winding sleeve.
  • the knife can then be swung into this tensioned part to cut the web of material.
  • US 5 639 045 A shows a further roll winding device, with a knife at the front end of a curved one Support surface is arranged over the in the changing bed located winding roll raised and over a Carrier roller can be rolled out of the changing bed. For this purpose, the two support rollers are moved apart. The knife is on the surface of a support roller fixed and clamps the material web at the same time on.
  • EP 0 716 997 A2 shows a roll winding device with a blade-like knife that is stretched between the holding arms is rotatable about the axis of a support roller are. This knife can be replaced by a pad between the winding roller and the corresponding support roller be performed to cut the material web.
  • JP 60-232 358 A shows a web cutting device in a roll winding machine, in which a knife with a Curvature that is essentially the diameter of a Carrier roller corresponds, inserted into the changing bed from below can be.
  • This knife is attached to levers, which pivots about the axis of rotation of the support roller can be.
  • Another pair of levers carries a cutting bar that the material web over the Knife can press to cut it.
  • US 4 304 368 A shows a roll winding device, at the winding roll to cut through the material web raised and the web of material formed into a loop becomes. In doing so, it becomes one over the front end Loop formation unit tensioned in which a knife is arranged, which in the tensioned and on the Loop forming unit immersed on the material web lying on top can be.
  • Another roll winding device is, for example known from EP 0 529 407 B1.
  • the changing bed is here formed by two support rollers.
  • the separator is inserted into the changing bed from below.
  • She points a movable knife holder that pivots can be that the knife arranged at one end is approaching a support roller while the other end of the knife carrier on the other support roller supported.
  • the winding roll comes out of the The changing bed is ejected, then the material web breaks on the cutting edge of the knife.
  • EP 0 460 395 B1 shows a winding device with a separator below the Carrier roller is arranged.
  • the knife is on a knife holder attached.
  • the knife holder is with a lever linkage connected, which ensures that the knife an arcuate movement into the changing bed can execute.
  • the knife holder In the working position, the knife holder is which then has a curvature on the support roller on.
  • Such winding devices are used to for example made of paper or cardboard Wind up the winding roll.
  • the material webs are often supplied with a greater length than one single winding roll can accommodate or even endless. It is therefore necessary from time to time, the material web to cut across their running direction, to remove the "full" winding roll and a new winding tube appeal.
  • Cutting the web of material is basically not always done by one Cutting operation. Rather, the material web is often just torn off over the cutting edge of the knife. For this The cutting edge is often serrated for this reason or formed with a series of tips so that the web of material is first perforated and then along the Perforation line is torn off. Still designated one usually calls this process "cutting".
  • the Quality of the cut is among other things from the position and angular position of the knife and from the Tear strength of the material web dependent. If the knife after a long period of use, for example is relatively blunt and a material web with a high Tensile strength is wound, for example a Cardboard web, then can with an incorrectly chosen position of the knife the case occur that the severing does not occur, which is a long interruption of the Winding process because you then by hand must rework. In the known devices mentioned above therefore you have a working position for the knife chosen which is suitable for most use cases has proven sufficient. Still stay Cases where the result of the separation process is not satisfied.
  • the invention has for its object the separation process to improve.
  • the movement control of the knife is relative simple.
  • the knife can make a circular movement around the axis of rotation of the support roller.
  • the swivel angle, the holding arm starting from the basic position is the main measure of reaching the Working position.
  • the diameter of the winding roll is relatively light ascertainable.
  • the control device can, for example have a table of values covering each diameter range assigns a certain swivel angle.
  • the knife carrier is articulated to the holding arms, at least a holding arm has an auxiliary drive with which an angle between the holding arm and knife holder can be changed is.
  • the knife carrier preferably has a curvature, adapted to the curvature of the circumference of the support roller is.
  • the material web thus becomes flat on the surface the idler roller held when the separation process he follows. Accordingly, there is a relatively large one Holding force available for the web of material, too when the contact pressure of the knife carrier on the support roller is limited. But if the material web is reliable is held, then the weight of the winding roll is sufficient in most cases, even to a blunted Cutting edge of the knife the cutting process to effect.
  • the knife holder at this configuration stiffened in itself, on the one hand through the curvature itself and on the other hand due to the possibility of contacting the carrier roller.
  • the auxiliary drive preferably engages in the area of the end the curvature on the knife carrier.
  • the area of The end of the curvature extends on both sides of the transition from the curvature to the non-curved part of the Knife carrier.
  • the expert can determine the optimal position easily find out through a few tries. If you can Then attack auxiliary drive in the area of the end it is possible to use the curved area of the knife holder with a certain bias to the scope of the Carrier roller pull up, which is the stability of the knife holder further increased during the cutting process.
  • the auxiliary drive and / or the drive are preferred designed as a linear drive. So it can be, for example are piston-cylinder drives that be driven hydraulically or pneumatically. In order to is a relatively sensitive positioning of the knife possible in the working position.
  • the drive preferably engages in the same position on the holding arm to which the knife holder is also attached is. This results in a quasi-translation-free process Transfer of motion from the drive to the Knife carrier. You only need a single articulation.
  • the knife carrier is not included in the drive a moment.
  • the knife carrier preferably has on the knife opposite end on a reinforcement profile.
  • This Reinforcement profile is used, among other things, to deflect the knife holder and thus the knife at To prevent cutting or cutting. The knife holder is thereby stiffened.
  • the reinforcement profile preferably has one Retaining wall on the knife holder between the changing bed and the connection with the holding arm is supported. This creates another measure to to prevent the knife carrier from bending or at least to complicate.
  • the support wall preferably has a concave shape on, which is adapted to the roller support. So that leaves the point of attack of the retaining wall on the knife carrier shift even further towards the changing bed.
  • a roll winding device 1 has a first support roller 2 and a second support roller 3, which a winding bed 4 form in which a winding roll 5 is wound becomes.
  • the winding roll is in the direction of an arrow 6 rotated, for example driven by the support roller 2, which rotates in the direction of an arrow 7.
  • By the rotational movement of the support roller 2 becomes a material web 8, which wraps around the support roller 2 by about 180 °, on the Winding roll 5 wound up.
  • roller support can be used, for example a rotating one Belt that is guided over two pulleys.
  • Insertion aids 9, 10 are also shown in dashed lines for the material web with the help of which the incoming Material web 8 are conveyed into the winding bed 4 can.
  • a separating device 11 is located below the support roller 2 arranged, which has a knife 12, the upper End of a knife carrier 13 is arranged.
  • the knife holder 13 has a reinforcing profile at its lower end 14 on.
  • the knife carrier 13 is on bent its lower end by about 90 °, namely from the first support roller 2 away.
  • the reinforcement profile 14 also has a support wall 15 which extends from the bent End of the knife holder up to about his Middle extends. As can be seen better from FIG. 2, the support wall 15 is concavely curved and at least follows approximately the circumference of the second support roller 3. It can be welded to the knife carrier 13.
  • the knife carrier 13 is articulated via an articulation point 16 connected to a holding arm 17.
  • the holding arm 17 is rotatable via a bearing 18 with the support roller 2 or connected to a housing receiving the support roller 2 in such a way that the pivot axis 19 of the holding arm 17 with the axis of rotation of the support roller 2 coincides.
  • the piston rod 20 also engages at the pivot point 16 Piston-cylinder unit 21, the other end of which is articulated on a machine frame, not shown, that also carries the support rollers 2, 3, attached is. If the piston rod 20 is extended, then located the knife 12 with the knife carrier 13 in the basic position shown in Fig. 1.
  • An auxiliary drive 22 is fastened to the holding arm 17, which is articulated on the knife carrier 13. With the help of Auxiliary drive 22 can be the angle between the holding arm 17 and the knife carrier 13 change.
  • the knife carrier 13 has a connection to the knife 12 a curvature 23 that corresponds to the curvature of the lateral surface corresponds to the support roller 2.
  • the auxiliary drive 22 engages to the knife carrier 13 approximately where the curvature 23 merges into a straight section of the knife carrier 13.
  • a diameter sensor is indicated schematically in the changing bed 24, which is connected to a control device 25 which controls the piston-cylinder unit 21.
  • the diameter sensor 24 (only shown in FIG. 2) determines the diameter of the finished winding roll 5 and reports it to the control unit 25. This then represents depending on the diameter reached the working position of the knife 12.
  • the separating device 11 now works as follows:
  • the winding roll 5 is, as is well known, for so long wound until it reaches a predetermined diameter has, that is, a predetermined amount of the material web 8 has recorded.
  • the Separating device 11 in its basic position, i.e. the Piston-cylinder unit 21 is extended.
  • the Auxiliary drive 22 is extended so that the knife 12th a sufficient distance from the surface of the Carrier roller 2 and neither the web of material 8, in which it is for example a paper web or a Cardboard web can still act, the surface of the support rollers 2, 3 damaged.
  • the auxiliary drive 22 When the winding roll 5 reaches its target diameter then the auxiliary drive 22 is first actuated, the knife 12 to the support roller 2 pulls in so far that the knife 12 through the gap between the two support rollers 2, 3 fits. After that the piston-cylinder unit 21 is operated to retract the piston rod 20.
  • the knife 12 through the gap pushed between the two support rollers 2, 3. It follows due to the curvature 23 of the knife carrier 13 with a small distance between the peripheral surface of the support roller 2. In Depends on the diameter of the winding roll 5 hears Movement of the knife carrier 13 at a certain position on.
  • the auxiliary drive 22 can be another Times are actuated to the knife carrier 13 flat System on the material web lying on the support roller 2 Bring 8. The material web 8 is therefore between the Knife holder 13 and the support roller 2 are clamped. The Roll 5 is then from the Changing bed 4 ejected and comes to a roll-out table 26. During this movement, the material web 8 stretched over the knife 12. Because the position of the knife 12 ideal for all winding roll diameters 5 can be set, the correct result Cutting angle so that the material web breaks off. in this connection is a deflection of the knife carrier 13 on the Length of the support rollers 2, 3 largely by three measures prevented. Firstly, the curvature 23 of the Knife holder 13 to a certain stiffening. To the second, the auxiliary drive 22 assists. Finally, the retaining wall acts as a supportive element due to their concave shape relatively close to the bottom End of the changing bed 4.

Landscapes

  • Replacement Of Web Rolls (AREA)

Description

Die Erfindung betrifft eine Rollenwickelvorrichtung zum Aufwickeln einer Materialbahn zu einer Wickelrolle mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a roll winding device for Winding a material web to a winding roll with the features of the preamble of claim 1.

Eine derartige Rollenwickelvorrichtung ist aus US 4 516 735 A bekannt. Ein Messer ist über einen Hilfsträger an einem Hebel befestigt, der um die Achse der Tragwalze herum verschwenkbar ist. An dem Hebel ist eine Ausstoßrolle für die Wickelrolle befestigt, die bei einer Verschwenkung des Hebels die Wickelrolle über den Scheitelpunkt einer Tragwalze hinaus drückt. Bei dieser Bewegung wird die noch an der ausgestoßenen Wickelrolle hängende Materialbahn zwischen einer weiteren, auf dem Hilfsträger angeordneten Umlenkrolle und einer in das Wickelbett eingelegten Wickelhülse verspannt. Das Messer kann dann in diesem gespannten Teil eingeschwenkt werden, um die Materialbahn zu durchtrennen.Such a roll winder is from US 4,516,735 A is known. A knife is over a subcarrier attached to a lever which is about the axis of the Carrier roller is pivotable around. There is one on the lever Ejection roller attached to the winding roll, which at a pivoting of the lever, the winding roll over the The vertex of a carrier roller pushes out. At this Movement is still on the ejected winding roll hanging material web between another, on the Subcarrier arranged pulley and one in the Winding bed inserted wrapped winding sleeve. The knife can then be swung into this tensioned part to cut the web of material.

US 5 639 045 A zeigt eine weitere Rollenwickelvorrichtung, bei der ein Messer am vorderen Ende einer gekrümmten Auflagefläche angeordnet ist, über die im Wickelbett befindliche Wickelrolle angehoben und über eine Tragwalze aus dem Wickelbett herausgerollt werden kann. Hierzu werden die beiden Tragwalzen auseinander gefahren. Das Messer wird auf der Oberfläche der einen Tragwalze festgelegt und klemmt damit gleichzeitig die Materialbahn ein.US 5 639 045 A shows a further roll winding device, with a knife at the front end of a curved one Support surface is arranged over the in the changing bed located winding roll raised and over a Carrier roller can be rolled out of the changing bed. For this purpose, the two support rollers are moved apart. The knife is on the surface of a support roller fixed and clamps the material web at the same time on.

EP 0 716 997 A2 zeigt eine Rollenwickelvorrichtung mit einem blattartigen Messer, das zwischen Haltearmen aufgespannt ist, die um die Achse einer Tragwalze verdrehbar sind. Dieses Messer kann durch einen Auflagenip zwischen der Wickelrolle und der entsprechenden Tragwalze geführt werden, um die Materialbahn zu durchtrennen.EP 0 716 997 A2 shows a roll winding device with a blade-like knife that is stretched between the holding arms is rotatable about the axis of a support roller are. This knife can be replaced by a pad between the winding roller and the corresponding support roller be performed to cut the material web.

JP 60-232 358 A zeigt eine Bahnschneideeinrichtung in einer Rollenwickelmaschine, bei der ein Messer mit einer Krümmung, die im wesentlichen dem Durchmesser einer Tragwalze entspricht, von unten in das Wickelbett eingefahren werden kann. Dieses Messer ist an Hebeln befestigt, die um die Rotationsachse der Tragwalze verschwenkt werden können. Ein weiteres Hebelpaar trägt einen Schneidebalken, der die Materialbahn über das Messer drücken kann, um es zu durchtrennen.JP 60-232 358 A shows a web cutting device in a roll winding machine, in which a knife with a Curvature that is essentially the diameter of a Carrier roller corresponds, inserted into the changing bed from below can be. This knife is attached to levers, which pivots about the axis of rotation of the support roller can be. Another pair of levers carries a cutting bar that the material web over the Knife can press to cut it.

US 4 304 368 A zeigt eine Rollenwickelvorrichtung, bei der zum Durchtrennen der Materialbahn die Wickelrolle angehoben und die Materialbahn zu einer Schlaufe geformt wird. Dabei wird sie über das vordere Ende einer Schlaufenbildungseinheit gespannt, in der ein Messer angeordnet ist, das in die gespannte und auf der Schlaufenbildungseinheit aufliegende Materialbahn eingetaucht werden kann.US 4 304 368 A shows a roll winding device, at the winding roll to cut through the material web raised and the web of material formed into a loop becomes. In doing so, it becomes one over the front end Loop formation unit tensioned in which a knife is arranged, which in the tensioned and on the Loop forming unit immersed on the material web lying on top can be.

Eine weitere Rollenwickelvorrichtung ist beispielsweise aus EP 0 529 407 B1 bekannt. Das Wickelbett ist hierbei gebildet durch zwei Tragwalzen. Die Trenneinrichtung wird von unten in das Wickelbett eingefahren. Sie weist einen beweglichen Messerträger auf, der so verschwenkt werden kann, daß sich das Messer, das an einem Ende angeordnet ist, einer Tragwalze nähert, während sich das andere Ende des Messerträgers an der anderen Tragwalze abstützt. Wenn die Wickelrolle aus dem Wickelbett ausgestoßen wird, dann reißt die Materialbahn an der Schneidkante des Messers ab.Another roll winding device is, for example known from EP 0 529 407 B1. The changing bed is here formed by two support rollers. The separator is inserted into the changing bed from below. She points a movable knife holder that pivots can be that the knife arranged at one end is approaching a support roller while the other end of the knife carrier on the other support roller supported. When the winding roll comes out of the The changing bed is ejected, then the material web breaks on the cutting edge of the knife.

Eine Weiterentwicklung dieser Rollenwickelvorrichtung ist in EP 0 540 896 A1 dargestellt. Dort wird die Bewegung des Messerträgers, der beim Schneiden eine ähnliche Position einnehmen soll, auf andere Weise gesteuert, um die Materialbahn auch dann schneiden zu können, wenn die Wickelrolle einen kleineren Durchmesser annimmt und somit tiefer in das Wickelbett eintaucht.A further development of this roll winding device is shown in EP 0 540 896 A1. There is the movement of the knife holder, which is similar when cutting Take position, controlled in other ways, in order to be able to cut the material web, when the winding roll takes on a smaller diameter and thus dives deeper into the changing bed.

Schließlich zeigt EP 0 460 395 B1 eine Wickelvorrichtung mit einer Trenneinrichtung, die unterhalb der Tragwalze angeordnet ist. Das Messer ist an einem Messerträger befestigt. Der Messerträger ist mit einem Hebelgestänge verbunden, das dafür sorgt, daß das Messer eine bogenförmige Bewegung in das Wickelbett hinein ausführen kann. In der Arbeitsstellung liegt der Messerträger, der eine Krümmung aufweist dann an der Tragwalze an.Finally, EP 0 460 395 B1 shows a winding device with a separator below the Carrier roller is arranged. The knife is on a knife holder attached. The knife holder is with a lever linkage connected, which ensures that the knife an arcuate movement into the changing bed can execute. In the working position, the knife holder is which then has a curvature on the support roller on.

Derartige Wickelvorrichtungen dienen dazu, Materialbahnen, beispielsweise aus Papier oder Karton, zu einer Wickelrolle aufzuwickeln. Die Materialbahnen werden vielfach mit einer größeren Länge zugeführt als eine einzelne Wickelrolle aufnehmen kann oder sogar endlos. Es ist daher von Zeit zu Zeit erforderlich, die Materialbahn quer zu ihrer Laufrichtung zu durchtrennen, die "volle" Wickelrolle zu entfernen und eine neue Wickelhülse einzulegen. Das Durchtrennen der Materialbahn erfolgt hierbei im Grunde nicht immer durch einen Schneidvorgang. Die Materialbahn wird vielmehr oft nur über die Schneidkante des Messers abgerissen. Aus diesem Grund ist die Schneidkante vielfach auch gezackt oder mit einer Reihe von Spitzen ausgebildet, so daß die Materialbahn zuerst perforiert und dann entlang der Perforationslinie abgerissen wird. Dennoch bezeichnet man diesen Vorgang üblicherweise als "Schneiden". Die Qualität des Schnittes ist hierbei unter anderem von der Position und Winkellage des Messers und von der Reißfestigkeit der Materialbahn abhängig. Wenn das Messer nach einer längeren Benutzung beispielsweise schon relativ stumpf ist und eine Materialbahn mit einer hohen Reißfestigkeit gewickelt wird, beispielsweise eine Kartonbahn, dann kann bei einer falsch gewählten Position des Messers der Fall auftreten, daß das Durchtrennen nicht erfolgt, was eine längere Unterbrechung des Wickelvorganges zur Folge hat, weil man dann von Hand nacharbeiten muß. Bei den bekannten, obengenannten Vorrichtungen hat man daher für das Messer eine Arbeitsstellung gewählt, die sich für die meisten Anwendungsfälle als ausreichend erwiesen hat. Gleichwohl bleiben Fälle, in denen das Ergebnis des Trennvorganges nicht befriedigt.Such winding devices are used to for example made of paper or cardboard Wind up the winding roll. The material webs are often supplied with a greater length than one single winding roll can accommodate or even endless. It is therefore necessary from time to time, the material web to cut across their running direction, to remove the "full" winding roll and a new winding tube appeal. Cutting the web of material is basically not always done by one Cutting operation. Rather, the material web is often just torn off over the cutting edge of the knife. For this The cutting edge is often serrated for this reason or formed with a series of tips so that the web of material is first perforated and then along the Perforation line is torn off. Still designated one usually calls this process "cutting". The Quality of the cut is among other things from the position and angular position of the knife and from the Tear strength of the material web dependent. If the knife after a long period of use, for example is relatively blunt and a material web with a high Tensile strength is wound, for example a Cardboard web, then can with an incorrectly chosen position of the knife the case occur that the severing does not occur, which is a long interruption of the Winding process because you then by hand must rework. In the known devices mentioned above therefore you have a working position for the knife chosen which is suitable for most use cases has proven sufficient. Still stay Cases where the result of the separation process is not satisfied.

Der Erfindung liegt die Aufgabe zugrunde, den Trennvorgang zu verbessern.The invention has for its object the separation process to improve.

Diese Aufgabe wird bei einer Rollenwickelvorrichtung der eingangs genannten Art durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst.This task is done with a roll winding device of the type mentioned above by the characteristics of the characteristic Part of claim 1 solved.

Damit kann die Arbeitsstellung des Messers in relativ weiten Grenzen frei gewählt werden. Man kann beispielsweise Rücksicht auf die Art des zu trennenden Materials nehmen. Die Bewegungssteuerung des Messers ist relativ einfach. Das Messer kann eine Kreisbewegung um die Rotationsachse der Tragwalze ausführen. Der Schwenkwinkel, den der Haltearm ausgehend von der Grundstellung aus zurücklegt, ist das Hauptmaß für das Erreichen der Arbeitsstellung. Je kleiner beispielsweise der Durchmesser der Wickelrolle ist, desto kleiner kann auch der Schwenkwinkel sein, denn der Haltearm zurücklegen muß, um das Messer in der Arbeitsstellung zu positionieren. Der Durchmesser der Wickelrolle ist relativ leicht feststellbar. Die Steuereinrichtung kann beispielsweise über eine Wertetabelle verfügen, die jedem Durchmesserbereich einen bestimmten Schwenkwinkel zuordnet. So that the working position of the knife in relative wide limits can be freely chosen. One can, for example Consideration of the type of material to be separated to take. The movement control of the knife is relative simple. The knife can make a circular movement around the axis of rotation of the support roller. The swivel angle, the holding arm starting from the basic position is the main measure of reaching the Working position. For example, the smaller the diameter the winding roll, the smaller it can be Swivel angle, because the holding arm must cover to position the knife in the working position. The diameter of the winding roll is relatively light ascertainable. The control device can, for example have a table of values covering each diameter range assigns a certain swivel angle.

Hierbei ist besonders bevorzugt, daß der Messerträger gelenkig an den Haltearmen befestigt ist, wobei mindestens ein Haltearm einen Hilfsantrieb aufweist, mit dem ein Winkel zwischen Haltearm und Messerträger veränderbar ist. Mit dieser Ausgestaltung ist es möglich, beim Positionieren des Messers einen Abstand zwischen der Oberfläche der Tragwalze und dem Messer beizubehalten. Damit können Beschädigungen der Oberfläche der Tragwalze durch das Messer vermieden werden. In der Schneidoder Arbeitsstellung kann das Messer dann aber nahe an die Tragwalze gebracht werden, so daß der Messerträger auf der Materialbahn aufliegt, die die Tragwalze hier noch umschlingt. Wenn die Wickelrolle dann ausgestoßen wird, dann wird der Messerträger durch den Hilfsantrieb festgehalten, so daß das Messer über die Breite der Wickelvorrichtung mit einer relativ großen Stabilität abgestützt wird. Damit ergibt sich eine höhere Belastbarkeit gegenüber den auftretenden Kräften. Trotz relativ weniger beweglicher Teile wird es hierdurch möglich, durch ein Zusammenwirken der Haltearme und des Hilfsantriebs das Messer an der günstigsten Stelle zu positionieren.It is particularly preferred that the knife carrier is articulated to the holding arms, at least a holding arm has an auxiliary drive with which an angle between the holding arm and knife holder can be changed is. With this configuration, it is possible to Position the knife a distance between the Maintain the surface of the carrier roller and the knife. This can damage the surface of the carrier roller can be avoided by the knife. In the cutting or The knife can then work position close to the carrier roller are brought so that the knife carrier rests on the material web that the carrier roller here still wraps around. If the winding roll is then ejected then the knife carrier is driven by the auxiliary drive held so that the knife across the width of the Winding device with a relatively high stability is supported. This results in a higher resilience towards the forces that occur. Despite relative fewer moving parts, through a cooperation of the holding arms and the Auxiliary drive the knife at the most convenient point position.

Vorzugsweise weist der Messerträger eine Krümmung auf, die an die Krümmung des Umfangs der Tragwalze angepaßt ist. Damit wird die Materialbahn flächig auf der Oberfläche der Tragwalze festgehalten, wenn der Trennvorgang erfolgt. Dementsprechend steht eine relativ große Haltekraft für die Materialbahn zur Verfügung, auch wenn der Anpreßdruck des Messerträgers an die Tragwalze begrenzt ist. Wenn aber die Materialbahn zuverlässig festgehalten wird, dann reicht das Gewicht der Wickelrolle in den meisten Fällen aus, um auch bei einer abgestumpften Schneidkante des Messers den Trennvorgang zu bewirken. Darüber hinaus wird der Messerträger bei dieser Ausgestaltung in sich ausgesteift und zwar einerseits durch die Krümmung an sich und andererseits durch die Anlagemöglichkeit an der Tragwalze.The knife carrier preferably has a curvature, adapted to the curvature of the circumference of the support roller is. The material web thus becomes flat on the surface the idler roller held when the separation process he follows. Accordingly, there is a relatively large one Holding force available for the web of material, too when the contact pressure of the knife carrier on the support roller is limited. But if the material web is reliable is held, then the weight of the winding roll is sufficient in most cases, even to a blunted Cutting edge of the knife the cutting process to effect. In addition, the knife holder at this configuration stiffened in itself, on the one hand through the curvature itself and on the other hand due to the possibility of contacting the carrier roller.

Vorzugsweise greift der Hilfsantrieb im Bereich des Endes der Krümmung am Messerträger an. Der Bereich des Endes der Krümmung erstreckt sich beidseitig des Übergangs von der Krümmung in den nicht gekrümmten Teil des Messerträgers. Die optimale Position kann der Fachmann durch einige Versuche leicht herausfinden. Wenn man den Hilfsantrieb im Bereich des Endes angreifen läßt, dann ist es möglich, den gekrümmten Bereich des Messerträgers mit einer gewissen Vorspannung an den Umfang der Tragwalze heranzuziehen, was die Stabilität des Messerträgers beim Schneidvorgang weiter erhöht.The auxiliary drive preferably engages in the area of the end the curvature on the knife carrier. The area of The end of the curvature extends on both sides of the transition from the curvature to the non-curved part of the Knife carrier. The expert can determine the optimal position easily find out through a few tries. If you can Then attack auxiliary drive in the area of the end it is possible to use the curved area of the knife holder with a certain bias to the scope of the Carrier roller pull up, which is the stability of the knife holder further increased during the cutting process.

Vorzugsweise sind der Hilfsantrieb und/oder der Antrieb als Linearantrieb ausgebildet. Es kann sich also beispielsweise um Kolben-Zylinder-Antriebe handeln, die hydraulisch oder pneumatisch angetrieben werden. Damit ist eine relativ feinfühlige Positionierung des Messers in der Arbeitsstellung möglich.The auxiliary drive and / or the drive are preferred designed as a linear drive. So it can be, for example are piston-cylinder drives that be driven hydraulically or pneumatically. In order to is a relatively sensitive positioning of the knife possible in the working position.

Vorzugsweise greift der Antrieb an der gleichen Position am Haltearm an, an der auch der Messerträger befestigt ist. Damit ergibt sich eine quasi übersetzungsfreie Übertragung der Bewegung von dem Antrieb auf den Messerträger. Man benötigt nur eine einzige Gelenkverbindung. Der Messerträger wird vom Antrieb nicht mit einem Moment belastet.The drive preferably engages in the same position on the holding arm to which the knife holder is also attached is. This results in a quasi-translation-free process Transfer of motion from the drive to the Knife carrier. You only need a single articulation. The knife carrier is not included in the drive a moment.

Vorzugsweise weist der Messerträger an seinem dem Messer abgewandten Ende ein Verstärkungsprofil auf. Dieses Verstärkungsprofil dient unter anderem dazu, ein Durchbiegen des Messerträgers und damit des Messers beim Schneid- oder Trennvorgang zu verhindern. Der Messerträger wird dadurch ausgesteift.The knife carrier preferably has on the knife opposite end on a reinforcement profile. This Reinforcement profile is used, among other things, to deflect the knife holder and thus the knife at To prevent cutting or cutting. The knife holder is thereby stiffened.

Hierbei weist das Verstärkungsprofil vorzugsweise eine Stützwand auf, die den Messerträger zwischen dem Wickelbett und der Verbindung mit dem Haltearm unterstützt. Damit wird eine weitere Maßnahme geschaffen, um das Durchbiegen des Messerträgers zu verhindern oder zumindest zu erschweren.Here, the reinforcement profile preferably has one Retaining wall on the knife holder between the changing bed and the connection with the holding arm is supported. This creates another measure to to prevent the knife carrier from bending or at least to complicate.

Vorzugsweise weist die Stützwand einen konkaven Verlauf auf, der an die Rollenstütze angepaßt ist. Damit läßt sich der Angriffsort der Stützwand an den Messerträger noch weiter in Richtung auf das Wickelbett hin verlagern.The support wall preferably has a concave shape on, which is adapted to the roller support. So that leaves the point of attack of the retaining wall on the knife carrier shift even further towards the changing bed.

Die Erfindung wird im folgenden anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung näher beschrieben. Hierin zeigen:

Fig. 1
eine schematische Darstellung einer Rollenwickelvorrichtung mit der Trenneinrichtung in Grundstellung und
Fig. 2
die Rollenwickelvorrichtung mit der Trenneinrichtung in Arbeitsstellung.
The invention is described below with reference to a preferred embodiment in connection with the drawing. Show here:
Fig. 1
is a schematic representation of a roll winding device with the separating device in the basic position and
Fig. 2
the roll winding device with the separating device in the working position.

Eine Rollenwickelvorrichtung 1 weist eine erste Tragwalze 2 und eine zweite Tragwalze 3 auf, die ein Wickelbett 4 bilden, in dem eine Wickelrolle 5 gewickelt wird. Die Wickelrolle wird in Richtung eines Pfeiles 6 gedreht, beispielsweise angetrieben durch die Tragwalze 2, die sich in Richtung eines Pfeiles 7 dreht. Durch die Drehbewegung der Tragwalze 2 wird eine Materialbahn 8, die die Tragwalze 2 um etwa 180° umschlingt, auf die Wickelrolle 5 aufgewickelt.A roll winding device 1 has a first support roller 2 and a second support roller 3, which a winding bed 4 form in which a winding roll 5 is wound becomes. The winding roll is in the direction of an arrow 6 rotated, for example driven by the support roller 2, which rotates in the direction of an arrow 7. By the rotational movement of the support roller 2 becomes a material web 8, which wraps around the support roller 2 by about 180 °, on the Winding roll 5 wound up.

Anstelle der zweiten Tragwalze 3 kann auch eine andere Rollenstütze verwendet werden, beispielsweise ein umlaufendes Band, das über zwei Umlenkrollen geführt ist.Instead of the second support roller 3, another one can also be used Roller support can be used, for example a rotating one Belt that is guided over two pulleys.

Gestrichelt eingezeichnet sind noch Einführhilfen 9, 10 für die Materialbahn, mit deren Hilfe die ankommende Materialbahn 8 in das Wickelbett 4 gefördert werden kann.Insertion aids 9, 10 are also shown in dashed lines for the material web with the help of which the incoming Material web 8 are conveyed into the winding bed 4 can.

Unterhalb der Tragwalze 2 ist eine Trenneinrichtung 11 angeordnet, die ein Messer 12 aufweist, das am oberen Ende eines Messerträgers 13 angeordnet ist. Der Messerträger 13 weist an seinem unteren Ende ein Verstärkungsprofil 14 auf. Hierzu ist der Messerträger 13 an seinem unteren Ende um etwa 90° umgebogen und zwar von der ersten Tragwalze 2 weg. Das Verstärkungsprofil 14 weist weiterhin eine Stützwand 15 auf, die sich vom umgebogenen Ende des Messerträgers bis zu etwa seiner Mitte erstreckt. Wie besser aus Fig. 2 zu erkennen ist, ist die Stützwand 15 konkav gebogen und folgt damit zumindest annähernd dem Umfang der zweiten Tragwalze 3. Sie kann mit dem Messerträger 13 verschweißt sein.A separating device 11 is located below the support roller 2 arranged, which has a knife 12, the upper End of a knife carrier 13 is arranged. The knife holder 13 has a reinforcing profile at its lower end 14 on. For this purpose, the knife carrier 13 is on bent its lower end by about 90 °, namely from the first support roller 2 away. The reinforcement profile 14 also has a support wall 15 which extends from the bent End of the knife holder up to about his Middle extends. As can be seen better from FIG. 2, the support wall 15 is concavely curved and at least follows approximately the circumference of the second support roller 3. It can be welded to the knife carrier 13.

Der Messerträger 13 ist über einen Gelenkpunkt 16 gelenkig mit einem Haltearm 17 verbunden. Der Haltearm 17 ist über ein Lager 18 drehbar mit der Tragwalze 2 oder mit einem die Tragwalze 2 aufnehmenden Gehäuse so verbunden, daß die Schwenkachse 19 des Haltearms 17 mit der Rotationsachse der Tragwalze 2 übereinstimmt.The knife carrier 13 is articulated via an articulation point 16 connected to a holding arm 17. The holding arm 17 is rotatable via a bearing 18 with the support roller 2 or connected to a housing receiving the support roller 2 in such a way that the pivot axis 19 of the holding arm 17 with the axis of rotation of the support roller 2 coincides.

Am Gelenkpunkt 16 greift auch die Kolbenstange 20 einer Kolben-Zylinder-Einheit 21 an, deren anderes Ende gelenkig an einem nicht näher dargestellten Maschinengestell, das auch die Tragwalzen 2, 3 trägt, befestigt ist. Wenn die Kolbenstange 20 ausgefahren ist, dann befindet sich das Messer 12 mit dem Messerträger 13 in der in Fig. 1 dargestellten Grundstellung.The piston rod 20 also engages at the pivot point 16 Piston-cylinder unit 21, the other end of which is articulated on a machine frame, not shown, that also carries the support rollers 2, 3, attached is. If the piston rod 20 is extended, then located the knife 12 with the knife carrier 13 in the basic position shown in Fig. 1.

Wenn die Kolben-Zylinder-Einheit 21 eingefahren ist, dann ist der Haltearm 17 um etwa 60° verschwenkt. Das Messer 12 erreicht dann die in Fig. 2 dargestellte Arbeitsstellung.When the piston-cylinder unit 21 is retracted, then the holding arm 17 is pivoted by about 60 °. The Knife 12 then reaches the working position shown in FIG. 2.

An dem Haltearm 17 ist ein Hilfsantrieb 22 befestigt, der am Messerträger 13 angelenkt ist. Mit Hilfe des Hilfsantriebs 22 läßt sich der Winkel zwischen dem Haltearm 17 und dem Messerträger 13 verändern.An auxiliary drive 22 is fastened to the holding arm 17, which is articulated on the knife carrier 13. With the help of Auxiliary drive 22 can be the angle between the holding arm 17 and the knife carrier 13 change.

Der Messerträger 13 weist im Anschluß an das Messer 12 eine Krümmung 23 auf, die der Krümmung der Mantelfläche der Tragwalze 2 entspricht. Der Hilfsantrieb 22 greift an den Messerträger 13 etwa dort an, wo die Krümmung 23 in einen geraden Abschnitt des Messerträgers 13 übergeht.The knife carrier 13 has a connection to the knife 12 a curvature 23 that corresponds to the curvature of the lateral surface corresponds to the support roller 2. The auxiliary drive 22 engages to the knife carrier 13 approximately where the curvature 23 merges into a straight section of the knife carrier 13.

Im Wickelbett schematisch angedeutet ist ein Durchmessersensor 24, der mit einer Steuereinrichtung 25 verbunden ist, die die Kolben-Zylinder-Einheit 21 steuert. Der Durchmessersensor 24 (nur in Fig. 2 dargestellt) ermittelt den Durchmesser der fertigen Wickelrolle 5 und meldet ihn an die Steuereinheit 25 weiter. Diese stellt dann in Abhängigkeit von dem erreichten Durchmesser die Arbeitsstellung des Messers 12 ein.A diameter sensor is indicated schematically in the changing bed 24, which is connected to a control device 25 which controls the piston-cylinder unit 21. The diameter sensor 24 (only shown in FIG. 2) determines the diameter of the finished winding roll 5 and reports it to the control unit 25. This then represents depending on the diameter reached the working position of the knife 12.

Die Trenneinrichtung 11 arbeitet nun wie folgt:The separating device 11 now works as follows:

Die Wickelrolle 5 wird, wie allgemein bekannt, so lange gewickelt, bis sie einen vorbestimmten Durchmesser erreicht hat, also eine vorbestimmte Menge der Materialbahn 8 aufgenommen hat. In dieser Zeit bleibt die Trenneinrichtung 11 in ihrer Grundstellung, d.h. die Kolben-Zylinder-Einheit 21 ist ausgefahren. Auch der Hilfsantrieb 22 ist ausgefahren, so daß das Messer 12 einen ausreichenden Abstand von der Oberfläche der Tragwalze 2 hat und weder die Materialbahn 8, bei der es sich beispielsweise um eine Papierbahn oder eine Kartonbahn handeln kann, noch die Oberfläche der Tragwalzen 2, 3 beschädigt.The winding roll 5 is, as is well known, for so long wound until it reaches a predetermined diameter has, that is, a predetermined amount of the material web 8 has recorded. During this time the Separating device 11 in its basic position, i.e. the Piston-cylinder unit 21 is extended. Also the Auxiliary drive 22 is extended so that the knife 12th a sufficient distance from the surface of the Carrier roller 2 and neither the web of material 8, in which it is for example a paper web or a Cardboard web can still act, the surface of the support rollers 2, 3 damaged.

Wenn die Wickelrolle 5 ihren Soll-Durchmesser erreicht hat, dann wird zunächst der Hilfsantrieb 22 betätigt, der das Messer 12 ein Stück weit an die Tragwalze 2 heranzieht und zwar so weit, daß das Messer 12 durch die Lücke zwischen den beiden Tragwalzen 2, 3 paßt. Danach wird die Kolben-Zylinder-Einheit 21 betätigt, um die Kolbenstange 20 einzuziehen. Der Haltearm 17, genauer gesagt die an beiden axialen Enden der Tragwalze 2 angeordneten Haltearme 17, werden um die genannten 60° gedreht. Hierbei wird das Messer 12 durch die Lücke zwischen den beiden Tragwalzen 2, 3 geschoben. Es folgt aufgrund der Krümmung 23 des Messerträgers 13 mit einem kleinen Abstand der Umfangsfläche der Tragwalze 2. In Abhängigkeit vom Durchmesser der Wickelrolle 5 hört die Bewegung des Messerträgers 13 an einer bestimmten Position auf. Hier kann der Hilfsantrieb 22 ein weiteres Mal betätigt werden, um den Messerträger 13 flächig zur Anlage an die auf der Tragwalze 2 liegende Materialbahn 8 zu bringen. Die Materialbahn 8 wird also zwischen dem Messerträger 13 und der Tragwalze 2 eingeklemmt. Die Rolle 5 wird dann mit an sich bekannten Mitteln aus dem Wickelbett 4 ausgestoßen und gelangt auf einen Ausrolltisch 26. Bei dieser Bewegung wird die Materialbahn 8 über das Messer 12 gespannt. Da die Position des Messers 12 für alle Wickelrollendurchmesser 5 jeweils optimal eingestellt werden kann, ergibt sich der richtige Schneidwinkel, so daß die Materialbahn abreißt. Hierbei wird eine Durchbiegung des Messerträgers 13 über die Länge der Tragwalzen 2, 3 durch drei Maßnahmen weitgehend verhindert. Zum einen führt die Krümmung 23 des Messerträgers 13 zu einer gewissen Aussteifung. Zum zweiten greift der Hilfsantrieb 22 unterstützend an. Schließlich wirkt die Stützwand unterstützend und zwar aufgrund ihrer konkaven Ausformung relativ dicht am unteren Ende des Wickelbetts 4.When the winding roll 5 reaches its target diameter then the auxiliary drive 22 is first actuated, the knife 12 to the support roller 2 pulls in so far that the knife 12 through the gap between the two support rollers 2, 3 fits. After that the piston-cylinder unit 21 is operated to retract the piston rod 20. The holding arm 17, more precisely said the at both axial ends of the support roller 2 arranged holding arms 17 are around the mentioned Rotated 60 °. Here, the knife 12 through the gap pushed between the two support rollers 2, 3. It follows due to the curvature 23 of the knife carrier 13 with a small distance between the peripheral surface of the support roller 2. In Depends on the diameter of the winding roll 5 hears Movement of the knife carrier 13 at a certain position on. Here the auxiliary drive 22 can be another Times are actuated to the knife carrier 13 flat System on the material web lying on the support roller 2 Bring 8. The material web 8 is therefore between the Knife holder 13 and the support roller 2 are clamped. The Roll 5 is then from the Changing bed 4 ejected and comes to a roll-out table 26. During this movement, the material web 8 stretched over the knife 12. Because the position of the knife 12 ideal for all winding roll diameters 5 can be set, the correct result Cutting angle so that the material web breaks off. in this connection is a deflection of the knife carrier 13 on the Length of the support rollers 2, 3 largely by three measures prevented. Firstly, the curvature 23 of the Knife holder 13 to a certain stiffening. To the second, the auxiliary drive 22 assists. Finally, the retaining wall acts as a supportive element due to their concave shape relatively close to the bottom End of the changing bed 4.

Claims (9)

  1. Roll winding apparatus (1) for winding a material web (8) to form a wound roll (5), comprising a winding bed (4) which is formed by at least a first carrier roll (2) and at least a second carrier roll (3) or a further roll support, and comprising a severing device (3) which has a knife (12) which is arranged on a knife carrier (13) and can be displaced between an operating position and a basic position, the knife carrier (13) being fixed to holding arms (17) which can be pivoted about the axis of rotation (19) of the first carrier roll (2), characterized in that at least one holding arm (17) is connected to a drive (21), which is connected to a control device (25) which sets the pivoting angle as a function of the diameter of the wound roll (5).
  2. Apparatus according to Claim 1, characterized in that the knife carrier (13) is fixed to the holding arms (17) in an articulated manner, at least one holding arm (17) having an auxiliary drive (22) with which an angle between holding arm (17) and knife carrier (13) can be varied.
  3. Apparatus according to Claim 1 or 2, characterized in that the knife carrier (13) has a curvature (23) which is matched to the curvature of the circumference of the first carrier roll (2).
  4. Apparatus according to Claims 2 and 3,
    characterized in that the auxiliary drive (22) acts in the region of the end of the curvature (23), at the transition to a non-curved part on the knife carrier (13).
  5. Apparatus according to one of Claims 2 to 4, characterized in that the auxiliary drive (22) and/or the drive (21) are formed as a linear drive.
  6. Apparatus according to Claim 5, characterized in that the drive (21) acts on the holding arm (17) at the same position (16) at which the knife carrier (13) is also fixed.
  7. Apparatus according to one of Claims 1 to 6, characterized in that the knife carrier (13) has a reinforcing profile (14) at its end facing away from the knife (12).
  8. Apparatus according to Claim 7, characterized in that the reinforcing profile (14) has a supporting wall (15) which supports the knife carrier (13) between the winding bed (4) and the connection (16) to the holding arm (17).
  9. Apparatus according to Claim 8, characterized in that the supporting wall (15) has a concave course which is matched to the second carrier roll (3) or the roll support.
EP99125492A 1999-01-14 1999-12-21 Roll winding device Expired - Lifetime EP1020389B1 (en)

Applications Claiming Priority (2)

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DE19901112 1999-01-14
DE19901112A DE19901112B4 (en) 1999-01-14 1999-01-14 Reel winding device

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EP1020389A3 EP1020389A3 (en) 2000-09-27
EP1020389B1 true EP1020389B1 (en) 2004-03-03

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Publication number Priority date Publication date Assignee Title
DE102006042278A1 (en) * 2006-09-08 2008-03-27 Voith Patent Gmbh Process for roll change in a roll winding device and roll winding device for winding a material web
US8360126B2 (en) * 2010-06-29 2013-01-29 Mag Ias, Llc Tow ejector foot for a fiber placement head

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DE2010072B2 (en) * 1970-03-04 1972-10-12 J.M. Voith Gmbh, 7920 Heidenheim CARRYING DRUM ROLLER FOR WINDING TRACKS
FI53560C (en) * 1976-03-12 1978-06-12 Ahlstroem Oy FOERFARANDE OCH ANORDNING FOER UPPRULLNING AV MATERIALBANOR
AT373220B (en) * 1979-07-27 1983-12-27 Voith Gmbh J M DOUBLE CARRIER ROLLER FOR REWINDING MATERIALS
ATA31581A (en) * 1980-02-14 1985-07-15 Jagenberg Werke Ag DISCONNECTING DEVICE
JPS60232358A (en) * 1984-05-01 1985-11-19 Kawanoe Zoki Kk Web cutting device in web winder
FI94514C (en) * 1990-06-08 1995-09-25 Valmet Paper Machinery Inc Cutting device in a wheelchair for a runway
DE4128095C1 (en) * 1991-08-24 1992-11-26 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4134361A1 (en) * 1991-10-17 1993-04-22 Voith Gmbh J M WRAPPING MACHINE FOR REWINDING A MATERIAL, IN PARTICULAR A PAPER
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Publication number Publication date
DE19901112A1 (en) 2000-07-27
DE19901112B4 (en) 2004-04-01
EP1020389A3 (en) 2000-09-27
DE59908733D1 (en) 2004-04-08
EP1020389A2 (en) 2000-07-19
US6322020B1 (en) 2001-11-27

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