EP1035052A2 - Linear drive device - Google Patents

Linear drive device Download PDF

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Publication number
EP1035052A2
EP1035052A2 EP99125161A EP99125161A EP1035052A2 EP 1035052 A2 EP1035052 A2 EP 1035052A2 EP 99125161 A EP99125161 A EP 99125161A EP 99125161 A EP99125161 A EP 99125161A EP 1035052 A2 EP1035052 A2 EP 1035052A2
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EP
European Patent Office
Prior art keywords
component
cutting
lifting device
unit according
speed lifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99125161A
Other languages
German (de)
French (fr)
Other versions
EP1035052B1 (en
EP1035052A3 (en
Inventor
Zygmunt Madrzak
Matthias Wohlfahrt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
Voith Sulzer Papiertechnik Patent GmbH
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Publication date
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Publication of EP1035052A2 publication Critical patent/EP1035052A2/en
Publication of EP1035052A3 publication Critical patent/EP1035052A3/en
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Publication of EP1035052B1 publication Critical patent/EP1035052B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B65H19/265—Cutting-off the web running to the wound web roll using a cutting member moving linearly in a plane parallel to the surface of the web and along a direction crossing the web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5151—Cutting handled material transversally to feeding direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51536—Laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/11—Actuating means linear pneumatic, e.g. inflatable elements

Definitions

  • the invention relates to a linear drive unit, which is used to move a component, in particular a cutting device.
  • a cutting device is used for example in a machine for producing or finishing a fibrous web, e.g. B. Paper or cardboard web, preferably at the end of such a machine in the area of a Changing apparatus.
  • the running fibrous web is cut with the help of the cutting device severed transversely to the web running direction, especially if during the running Company has become full of a winding roll created on a first drum and The formation of a new winding roll begins on a second drum ("Drum change").
  • the linear drive unit known from DS 1 is used to move in opposite directions two cutting devices, each having a circular knife.
  • the linear movement takes place by means of an endless rope, which is driven by means of a friction wheel.
  • the device known from DS 2 comprises one or two liquid jet cutting devices, which at high speed (10 m / sec) across a running one Fibrous web are moved linearly. Details about the linear drive are not described.
  • DS 3 discloses a similar device, the linear drive being one has pneumatic pistons.
  • a rodless cylinder serves the same purpose; the lifting speed is approximately 15.3 m / s.
  • the present invention aims to achieve an even better result become.
  • the object of the invention is the known one To improve linear drive units so that in their application for Moving a cutter of a paper machine even less rejects than so far.
  • linear drive unit specified in claim 1 The invention is based on the knowledge that it is used in some applications Linear drive unit, especially when moving one described above Cutting device, not only depends on an extremely high speed, but that it must also be ensured that this high speed at the start of the Movement is achieved in the shortest possible time. That means it has to be extremely high Acceleration are taken care of.
  • This goal is primarily achieved in that in created a ready position for the linear drive unit according to the invention in which the first high-speed lifting device on the to be moved Component already exerts a high acceleration force in its rest position.
  • a holding device holds this in accordance with the invention moving component still in its rest position. If now to a selectable When the holding device is released, the high acceleration force acts from on the component to be moved. As a result, the Maximum speed of the component to be moved reached in a much shorter time than at the known devices.
  • the holding device is preferably a second High-speed lifting device, the two high-speed lifting devices work together in a meaningful way, as described below in individual is described.
  • the first high-speed lifting device is preferably a rodless pneumatic cylinder. Its main advantage is that its Length needs to be only slightly larger than the length of the running distance of the to be moved Component. In addition, the mass to be accelerated is very small, which makes it extremely high Acceleration results. In the case of the cutting device of a paper machine, the Length of the movement distance from the width of the web to be cut (Around 10 meters).
  • the length is Running distance only about half the track width.
  • Pneumatic cylinders could possibly act on the principle of a rocket drive Drive device can be provided.
  • the second high-speed lifting device is preferably a so-called "Mechanical linear unit” trained, available for example from NEFF Antriebstechnik Automation GmbH.
  • An advantage of this device is that with high acceleration a very high speed of movement is possible and that Acceleration and deceleration phases are easy to control. As a less cheap one
  • a hydraulic cylinder can also be considered, as described below.
  • the subclaims include further advantageous refinements of the invention and Features of a drum changing system to which the invention is applicable.
  • Figure 1 shows schematically that for two opposing cutting devices provided linear drive units with a first and a second High speed lifting device.
  • FIG. 2 shows an alternative detail from FIG. 1.
  • Figure 3 shows schematically a winding machine in side view, with a linear drive unit according to the invention.
  • FIG. 1 you can see a piece of a running fibrous web 9, which is in the direction arrow P moves.
  • Two cutting devices 5 are provided, in the form of Liquid jet nozzles, which in their rest position in the area of the web center in low Distance from the web 9 are arranged. Their beam direction is approximately vertical to the plane of the drawing, ie essentially perpendicular to the running web 9 or below an angle to the vertical.
  • Cutting fluid is supplied by means of a High pressure pump 10, which has a liquid pressure in the order of up to 2000 bar or can generate more.
  • the pump 10 is via a line system 11 with a switching valve 12 and connected to the cutting devices 5 via high-pressure hose lines 3.
  • Figure 1 shows the state shortly after opening the switching valve 12; the cutting process has just started, with the cutting devices 5 still in their rest position are. This initially creates two cutting lines 18, 19 which are parallel to Extend web direction. If a short time later the cutting device 5 in the direction arrows 5a are moved to the edges of the web, the known diagonal results Section line course (see Fig. 10 of DS 1 or Fig. 8 of DS 3). Deviating from Fig. 1 the cutting devices 5 can also be arranged such that the cross diagonal cutting lines (Fig. 6 of DS 3) or that the cutting devices lie immediately one behind the other (Fig. 7 of DS 3).
  • Each cutter 5 is mechanically attached to the piston 6 of a rodless one Pneumatic cylinder 1 coupled; this forms the first mentioned in claim 1 High speed lifting device.
  • Each pneumatic cylinder 1 is on one of its both ends via a pressure line 7 (with a large flow cross section) with a Pressure accumulator 8 connected to which a compressed air generator 8a is connected.
  • One end of the high-pressure hose line 3 is coupled to the cutting device 5, the other end is - for the purpose of connection to the line system 11 - to a fixed one Component 13 coupled.
  • the High-pressure hose line 3 by means of a deflection device 4 by approximately 180 degrees redirected.
  • the deflection device 4 preferably designed as a deflection roller, is on the Movable element 2a of a second high-speed lifting device 2 attached. This is realized in Figure 1 in that the deflection roller 4 is rotatable in a bearing 4a is mounted, which is coupled to the piston rod 2a of a hydraulic cylinder 2.
  • FIG. 2 A preferred alternative to this is shown in FIG. 2.
  • the pulley 4 rotatably supported on the linearly movable element 21, which is part of a is a total of 2 'designated mechanical linear unit.
  • linear movable element 21 by means of an endless toothed belt 22 (guided over Pulleys 23) coupled to a drive motor 24.
  • Figure 1 shows the ready position of the linear drive unit.
  • the piston 6 is on the side of the pressure accumulator 8 already under pressure.
  • the one connected to the piston 6 Cutting device 5 is still operated by the second high-speed lifting device 2 held on the hose 3.
  • the cutting device 5 set in motion with high acceleration.
  • the ready position can be such that each of the pistons directly at the end of the pneumatic cylinder 1 (at the connection of the pressure line 7) located.
  • the cutting devices 5 can intersect intersecting lines generate (Fig. 6 of DS 3). It is also possible that the nozzles 5 only then The high pressure cutting fluid is applied after it has traveled a distance have traveled e.g. B. when it reaches approximately the central area of the paper web to have.
  • the axes of rotation of the deflection rollers 4 are perpendicular to the paper web 9.
  • Essential components of the winding machine shown in Figure 3 are a drivable and horizontally displaceable pressure roller 30 and a drivable drum 31.
  • the paper web 9 runs over a guide roller 32 and via the pressure roller 30 onto a winding roll (which is constantly increasing in diameter) 33. This is created by winding the drum 31, with the pressure roller 30 is in contact (dash-dotted state).
  • the drum 31 together with the winding roller 33 is constantly in accordance with the Diameter increase - shifted to the right in the view according to FIG. 3, e.g. by means of a spindle drive 34.
  • a spindle drive 34 To prepare a reel change (if the winding roll 33 has almost reached the desired diameter), the drum 31 with the Winding roller 33 away from the pressure roller 30 into that shown in full lines Position.
  • An auxiliary roller 35 presses the incoming web 9 against the winding roll 33. Now a new, still empty reel 36 is inserted into the winding machine.
  • the new drum is preferably in such a position with the pressure roller 30 brought into contact that the paper web 9 still running to the winding roll 33 the new Wraps around drum 36 a bit; the resulting wrap angle is 8 designated.
  • a cutting device is provided, with a top described linear drive unit. You can have a single cutter provide the entire paper web from one web edge to the other Cutting edge of the web or there are two cutting devices according to Figure 1 intended. In any case, it is ensured that the new one formed on the cutting line The beginning of the web is transferred to the new drum 36 so that a new one is formed there Winding roll can begin.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Transmission Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The linear drive unit for moving a cutter (5) to separate a moving cardboard or paper web (9) near a winding machine is attached to a high-speed lifting device (1) which moves it across the web. Holding devices (2) protect the cutter from the effects of acceleration when it is moved. If the holding devices are disconnected, movement of the cutter is stopped. An Independent claim is included for a drum changing system for use in a continuous paper or cardboard production machine using the drive unit.

Description

Die Erfindung betrifft ein Linear-Antriebs-Aggregat, das zum Bewegen eines Bauteils, insbesondere einer Schneideinrichtung, dient. Eine solche Schneideinrichtung benützt man beispielsweise in einer Maschine zum Herstellen oder Veredeln einer Faserstoffbahn, z. B. Papier- oder Kartonbahn, vorzugsweise am Ende einer solchen Maschine im Bereich eines Wickelapparates. Dabei wird die laufende Faserstoffbahn mit Hilfe der Schneideinrichtung quer zur Bahnlaufrichtung durchgetrennt, insbesondere wenn während des laufenden Betriebes eine auf einem ersten Tambour entstandene Wickelrolle voll geworden ist und auf einem zweiten Tambour das Bilden einer neuen Wickelrolle beginnt ("Tambourwechsel").The invention relates to a linear drive unit, which is used to move a component, in particular a cutting device. Such a cutting device is used for example in a machine for producing or finishing a fibrous web, e.g. B. Paper or cardboard web, preferably at the end of such a machine in the area of a Changing apparatus. The running fibrous web is cut with the help of the cutting device severed transversely to the web running direction, especially if during the running Company has become full of a winding roll created on a first drum and The formation of a new winding roll begins on a second drum ("Drum change").

Zum Stand der Technik wird auf die folgenden Druckschriften hingewiesen:

  • DS 1: DE 27 21 883,
  • DS 2: US 5 360 179,
  • DS 3: WO 97/48632,
  • DS 4: Prospekt "Waterjet Turn-up System" der Firma Beloit Corp.
    • The following publications are referred to the state of the art:
  • DS 1: DE 27 21 883,
  • DS 2: US 5 360 179,
  • DS 3: WO 97/48632,
  • DS 4: Brochure "Waterjet Turn-up System" from Beloit Corp.

    • Das aus DS 1 bekannte Linear-Antriebs-Aggregat dient zum gegenläufigen Bewegen von zwei Schneideinrichtungen, welche je ein Kreismesser aufweisen. Die Linearbewegung erfolgt mittels eines endlosen Seiles, das mittels eines Reibrades angetrieben wird.The linear drive unit known from DS 1 is used to move in opposite directions two cutting devices, each having a circular knife. The linear movement takes place by means of an endless rope, which is driven by means of a friction wheel.

    Die aus DS 2 bekannte Vorrichtung umfaßt eine oder zwei Flüssigkeitsstrahl-Schneideinrichtungen, die mit hoher Geschwindigkeit (10 m/sec) quer zu einer laufenden Faserstoffbahn linear bewegt werden. Einzelheiten über den Linearantrieb sind nicht beschrieben.The device known from DS 2 comprises one or two liquid jet cutting devices, which at high speed (10 m / sec) across a running one Fibrous web are moved linearly. Details about the linear drive are not described.

    Die DS 3 offenbart eine ähnliche Vorrichtung, wobei der Linear-Antrieb einen pneumatischen Kolben aufweist. DS 3 discloses a similar device, the linear drive being one has pneumatic pistons.

    Zum gleichen Zweck dient gemäß DS 4 ein stangenloser Zylinder; die Hubgeschwindigkeit beträgt etwa 15,3 m/s.According to DS 4, a rodless cylinder serves the same purpose; the lifting speed is approximately 15.3 m / s.

    Moderne Maschinen zum Herstellen oder Veredeln (oder zum sonstigen Verarbeiten) von Faserstoff-, insbesondere Papier-Bahnen werden mit immer höheren Arbeitsgeschwindigkeiten betrieben. In vielen Fällen werden Arbeitsgeschwindigkeiten von 2000 m/min angestrebt oder schon überschritten. Dementsprechend muß eine eingangs beschriebene Schneideinrichtung ebenfalls mit extrem hoher Geschwindigkeit quer zur Bahn bewegt werden. Denn bei jedem Schneidvorgang wird wenigstens eine diagonal verlaufende Schnittlinie erzeugt, in deren Bereich das Papier als nicht verkäuflicher Ausschuß anfällt. Es wurde stets versucht, die Ausschußmenge so gering wie möglich zu halten.Modern machines for the manufacture or refinement (or other processing) of Fibrous, especially paper webs are getting higher and higher Operating speeds operated. In many cases, working speeds of Desired or already exceeded 2000 m / min. Accordingly, one must start described cutting device also at extremely high speed across Web to be moved. Because with every cutting process at least one becomes diagonal running cutting line generated in the area of the paper as not for sale Committee is incurred. Attempts have always been made to minimize the amount of rejects hold.

    In dieser Hinsicht soll durch die vorliegende Erfindung ein noch besseres Ergebnis erzielt werden. Mit anderen Worten: Der Erfindung liegt die Aufgabe zugrunde, die bekannten Linearantriebs-Aggregate dahingehend zu verbessern, daß bei ihrer Anwendung zum Bewegen einer Schneideinrichtung einer Papiermaschine noch weniger Ausschuß als bisher anfällt.In this regard, the present invention aims to achieve an even better result become. In other words: the object of the invention is the known one To improve linear drive units so that in their application for Moving a cutter of a paper machine even less rejects than so far.

    Diese Aufgabe wird durch das im Anspruch 1 angegebene Linearantriebs-Aggregat gelöst. Die Erfindung beruht auf der Erkenntnis, daß es in manchen Anwendungsfällen für ein Linearantriebs-Aggregat, insbesondere beim Bewegen einer eingangs beschriebenen Schneideinrichtung, nicht nur auf eine extrem hohe Geschwindigkeit ankommt, sondern daß zusätzlich dafür gesorgt werden muß, daß diese hohe Geschwindigkeit beim Start der Bewegung in möglichst kurzer Zeit erreicht wird. Das heißt, es muß für eine extrem hohe Beschleunigung gesorgt werden. Dieses Ziel wird in erster Linie dadurch erreicht, daß in dem erfindungsgemäßen Linearantriebs-Aggregat eine Bereitschaftsstellung geschaffen wird, in welcher die erste Hochgeschwindigkeits-Hubeinrichtung auf das zu bewegende Bauteil schon in dessen Ruhestellung eine hohe Beschleunigungskraft ausübt. This object is achieved by the linear drive unit specified in claim 1. The invention is based on the knowledge that it is used in some applications Linear drive unit, especially when moving one described above Cutting device, not only depends on an extremely high speed, but that it must also be ensured that this high speed at the start of the Movement is achieved in the shortest possible time. That means it has to be extremely high Acceleration are taken care of. This goal is primarily achieved in that in created a ready position for the linear drive unit according to the invention in which the first high-speed lifting device on the to be moved Component already exerts a high acceleration force in its rest position.

    In diesem Zustand hält jedoch gemäß der Erfindung eine Halteeinrichtung das zu bewegende Bauteil noch in seiner Ruhestellung fest. Wenn nun zu einem wählbaren Zeitpunkt die Haltevorrichtung gelöst wird, dann wirkt die hohe Beschleunigungskraft vom ersten Augenblick an auf das zu bewegende Bauteil. Im Ergebnis wird die Höchstgeschwindigkeit des zu bewegenden Bauteils in viel kürzerer Zeit erreicht als bei den bekannten Vorrichtungen. Vorzugsweise ist die Halteeinrichtung als eine zweite Hochgeschwindigkeits-Hubeinrichtung ausgebildet, wobei die zwei Hochgeschwindigkeits-Hubeinrichtungen in sinnvoller Weise zusammenarbeiten, wie dies weiter unten im einzelnen beschrieben wird.In this state, however, a holding device holds this in accordance with the invention moving component still in its rest position. If now to a selectable When the holding device is released, the high acceleration force acts from on the component to be moved. As a result, the Maximum speed of the component to be moved reached in a much shorter time than at the known devices. The holding device is preferably a second High-speed lifting device, the two high-speed lifting devices work together in a meaningful way, as described below in individual is described.

    Die erste Hochgeschwindigkeits-Hubeinrichtung ist, wie schon bekannt, vorzugsweise ein stangenloser Pneumatikzylinder. Dessen Vorteil besteht hauptsächlich darin, daß seine Länge nur wenig größer zu sein braucht als die Länge der Laufstrecke des zu bewegenden Bauteils. Außerdem ist die zu beschleunigende Masse sehr klein, woraus eine extrem hohe Beschleunigung resultiert. Im Falle der Schneideinrichtung einer Papiermaschine hängt die Länge der Bewegungsstrecke ab von der Breite der durchzuschneidenden Bahn (Größenordnung 10 Meter).As already known, the first high-speed lifting device is preferably a rodless pneumatic cylinder. Its main advantage is that its Length needs to be only slightly larger than the length of the running distance of the to be moved Component. In addition, the mass to be accelerated is very small, which makes it extremely high Acceleration results. In the case of the cutting device of a paper machine, the Length of the movement distance from the width of the web to be cut (Around 10 meters).

    Wenn zwei gegenläufige Schneideinrichtungen vorgesehen werden, beträgt die Länge der Laufstrecke nur ungefähr die Hälfte der Bahnbreite. Alternativ zu einem stangenlosen Pneumatikzylinder könnte evtl. eine nach dem Prinzip eines Raketenantriebs wirkende Antriebseinrichtung vorgesehen werden.If two opposing cutting devices are provided, the length is Running distance only about half the track width. Alternatively to a barless one Pneumatic cylinders could possibly act on the principle of a rocket drive Drive device can be provided.

    Die zweite Hochgeschwindigkeits-Hubeinrichtung ist vorzugsweise als eine sogenannte "Mechanische Lineareinheit" ausgebildet, lieferbar beispielsweise von der Firma NEFF Antriebstechnik Automation GmbH. Ein Vorteil dieser Einrichtung besteht darin, daß mit hoher Beschleunigung eine sehr hohe Bewegungsgeschwindigkeit möglich ist und daß Beschleunigungs- und Verzögerungsphasen gut steuerbar sind. Als eine weniger günstige Alternative kommt auch ein Hydraulikzylinder in Betracht, wie weiter unten beschrieben ist.The second high-speed lifting device is preferably a so-called "Mechanical linear unit" trained, available for example from NEFF Antriebstechnik Automation GmbH. An advantage of this device is that with high acceleration a very high speed of movement is possible and that Acceleration and deceleration phases are easy to control. As a less cheap one As an alternative, a hydraulic cylinder can also be considered, as described below.

    Die Unteransprüche umfassen weitere vorteilhafte Ausgestaltungen der Erfindung und Merkmale eines Tambourwechselsystems, bei dem die Erfindung anwendbar ist. The subclaims include further advantageous refinements of the invention and Features of a drum changing system to which the invention is applicable.

    Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung beschrieben.Embodiments of the invention are described below with reference to the drawing described.

    Die Figur 1 zeigt schematisch die für zwei gegenläufige Schneideinrichtungen vorgesehenen Linearantriebs-Aggregate mit je einer ersten und einer zweiten Hochgeschwindigkeits-Hubeinrichtung.Figure 1 shows schematically that for two opposing cutting devices provided linear drive units with a first and a second High speed lifting device.

    Die Figur 2 zeigt ein alternatives Detail aus der Figur 1.FIG. 2 shows an alternative detail from FIG. 1.

    Die Figur 3 zeigt schematisch eine Wickelmaschine in Seitenansicht, mit einem erfindungsgemäßen Linearantriebs-Aggregat.Figure 3 shows schematically a winding machine in side view, with a linear drive unit according to the invention.

    In Figur 1 erkennt man ein Stück aus einer laufenden Faserstoffbahn 9, die sich in Richtung des Pfeiles P bewegt. Vorgesehen sind zwei Schneideinrichtungen 5, in Form von Flüssigkeitsstrahldüsen, die in ihrer Ruhestellung im Bereich der Bahnmitte in geringer Entfernung von der Bahn 9 angeordnet sind. Ihre Strahlrichtung verläuft ungefähr senkrecht zur Zeichenebene, also im wesentlichen senkrecht auf die laufende Bahn 9 oder unter einem Winkel zur Senkrechten. Das Zuführen von Schneidflüssigkeit erfolgt mittels einer Hochdruckpumpe 10, die einen Flüssigkeitsdruck in der Größenordnung bis 2000 bar oder mehr erzeugen kann. Die Pumpe 10 ist über ein Leitungssystem 11 mit einem Schaltventil 12 und über Hochdruck-Schlauchleitungen 3 mit den Schneideinrichtungen 5 verbunden. Die Figur 1 zeigt den Zustand kurz nach Öffnen des Schaltventils 12; der Schneidvorgang hat also gerade begonnen, wobei die Schneideinrichtungen 5 noch in ihrer Ruhestellung sind. Dadurch entstehen zunächst zwei Schnittlinien 18, 19, die sich parallel zur Bahnlaufrichtung erstrecken. Wenn kurze Zeit später die Schneideinrichtung 5 in Richtung der Pfeile 5a zu den Bahnrändern bewegt werden, ergibt sich der bekannte diagonale Schnittlinien-Verlauf (siehe Fig. 10 von DS 1 oder Fig. 8 von DS 3). Abweichend von Fig. 1 können die Schneideinrichtungen 5 auch derart angeordnet werden, daß sich die diagonalen Schnittlinien kreuzen (Fig. 6 von DS 3) oder daß die Schneideinrichtungen unmittelbar hintereinander liegen (Fig. 7 von DS 3). In Figure 1 you can see a piece of a running fibrous web 9, which is in the direction arrow P moves. Two cutting devices 5 are provided, in the form of Liquid jet nozzles, which in their rest position in the area of the web center in low Distance from the web 9 are arranged. Their beam direction is approximately vertical to the plane of the drawing, ie essentially perpendicular to the running web 9 or below an angle to the vertical. Cutting fluid is supplied by means of a High pressure pump 10, which has a liquid pressure in the order of up to 2000 bar or can generate more. The pump 10 is via a line system 11 with a switching valve 12 and connected to the cutting devices 5 via high-pressure hose lines 3. Figure 1 shows the state shortly after opening the switching valve 12; the cutting process has just started, with the cutting devices 5 still in their rest position are. This initially creates two cutting lines 18, 19 which are parallel to Extend web direction. If a short time later the cutting device 5 in the direction arrows 5a are moved to the edges of the web, the known diagonal results Section line course (see Fig. 10 of DS 1 or Fig. 8 of DS 3). Deviating from Fig. 1 the cutting devices 5 can also be arranged such that the cross diagonal cutting lines (Fig. 6 of DS 3) or that the cutting devices lie immediately one behind the other (Fig. 7 of DS 3).

    Jede Schneideinrichtung 5 ist mechanisch an den Kolben 6 eines stangenlosen Pneumatikzylinders 1 gekoppelt; dieser bildet die im Anspruch 1 genannte erste Hochgeschwindigkeits-Hubeinrichtung. Jeder Pneumatikzylinder 1 ist an einem seiner beiden Enden über eine Druckleitung 7 (mit großem Strömungsquerschnitt) mit einem Druckspeicher 8 verbunden, an den ein Drucklufterzeuger 8a angeschlossen ist.Each cutter 5 is mechanically attached to the piston 6 of a rodless one Pneumatic cylinder 1 coupled; this forms the first mentioned in claim 1 High speed lifting device. Each pneumatic cylinder 1 is on one of its both ends via a pressure line 7 (with a large flow cross section) with a Pressure accumulator 8 connected to which a compressed air generator 8a is connected.

    Das eine Ende der Hochdruck-Schlauchleitung 3 ist an die Schneideinrichtung 5 gekoppelt, das andere Ende ist - zwecks Verbindung mit dem Leitungssystem 11 - an ein ortsfestes Bauteil 13 gekoppelt. In der dargestellten bevorzugten Ausführungsform wird die Hochdruck- Schlauchleitung 3 mittels einer Umlenkeinrichtung 4 um ungefähr 180 Grad umgelenkt. Die Umlenkeinrichtung 4, vorzugsweise als Umlenkrolle ausgebildet, ist an dem beweglichen Element 2a einer zweiten Hochgeschwindigkeits-Hubeinrichtung 2 befestigt. Dies ist in Figur 1 dadurch realisiert, daß die Umlenkrolle 4 in einem Lager 4a drehbar gelagert ist, das mit der Kolbenstange 2a eines Hydraulikzylinders 2 gekoppelt ist.One end of the high-pressure hose line 3 is coupled to the cutting device 5, the other end is - for the purpose of connection to the line system 11 - to a fixed one Component 13 coupled. In the preferred embodiment shown, the High-pressure hose line 3 by means of a deflection device 4 by approximately 180 degrees redirected. The deflection device 4, preferably designed as a deflection roller, is on the Movable element 2a of a second high-speed lifting device 2 attached. This is realized in Figure 1 in that the deflection roller 4 is rotatable in a bearing 4a is mounted, which is coupled to the piston rod 2a of a hydraulic cylinder 2.

    Eine bevorzugte Alternative hierzu ist in Figur 2 dargestellt. Hier ist die Umlenkrolle 4 drehbar auf dem linear beweglichen Element 21 gelagert, welches Bestandteil einer insgesamt mit 2' bezeichneten mechanischen Lineareinheit ist. Darin ist das linear bewegliche Element 21 mittels eines endlosen Zahnriemens 22 (geführt über Riemenscheiben 23) an einen Antriebsmotor 24 gekoppelt.A preferred alternative to this is shown in FIG. 2. Here is the pulley 4 rotatably supported on the linearly movable element 21, which is part of a is a total of 2 'designated mechanical linear unit. In that it is linear movable element 21 by means of an endless toothed belt 22 (guided over Pulleys 23) coupled to a drive motor 24.

    In beiden Varianten der zweiten Hochgeschwindigkeits-Hubeinrichtung 2 bzw. 2' ist durch das Führen des Schlauches 3 über die Umlenkrolle 4 dafür gesorgt, daß bei der Bewegung einer der Schneideinrichtungen 5 über die Wegstrecke a das bewegliche Element 2a bzw. 21 nur die Hälfte dieser Strecke, nämlich die Strecke b zurücklegen muß. Wenn man den Schlauch 3 nicht nur über eine einzige Umlenkrolle 4 führt sondern (nach Art eines Flaschenzuges) über mehrere Umlenkrollen, so ist das Verhältnis der Wegstrecken a/b größer als 2. In both variants of the second high-speed lifting device 2 or 2 'is through guiding the hose 3 over the guide roller 4 ensures that when moving one of the cutting devices 5 over the distance a the movable element 2a or 21 only half of this distance, namely the distance b must cover. If you do that Hose 3 not only leads over a single deflection roller 4 but (in the manner of a Pulley) over several pulleys, so the ratio of the distances a / b larger than 2.

    Die Figur 1 zeigt die Bereitschaftsstellung des Linearantriebs-Aggregates. In jeder der beiden ersten Hochgeschwindigkeits-Hubeinrichtungen steht der Kolben 6 auf der Seite des Druckspeichers 8 schon unter Druck. Die mit dem Kolben 6 verbundenene Schneideinrichtung 5 wird noch durch die zweite Hochgeschwindigkeits-Hubeinrichtung 2 über den Schlauch 3 festgehalten.Figure 1 shows the ready position of the linear drive unit. In each of the In the first two high-speed lifting devices, the piston 6 is on the side of the pressure accumulator 8 already under pressure. The one connected to the piston 6 Cutting device 5 is still operated by the second high-speed lifting device 2 held on the hose 3.

    Sobald jedoch die zweite Hubeinrichtung 2 bzw. 2' aktiviert wird, beispielsweise durch Zuführen von Hydraulik-Druck über das Leitungssystem 14 mit Steuerventil 15, oder besser durch Aktivieren des Antriebsmotors 24 (im Falle der Figur 2), wird die Schneideinrichtung 5 mit hoher Beschleunigung in Bewegung gesetzt.However, as soon as the second lifting device 2 or 2 'is activated, for example by Supply of hydraulic pressure via the line system 14 with the control valve 15, or better by activating the drive motor 24 (in the case of FIG. 2), the cutting device 5 set in motion with high acceleration.

    Abweichend von Fig. 1 kann die Bereitschaftsstellung derart sein, daß jeder der Kolben sich unmittelbar am Ende des Pneumatikzylinders 1 (am Anschluß der Druckleitung 7) befindet. In diesem Fall können die Schneideinrichtungen 5 sich kreuzende Schnittlinien erzeugen (Fig. 6 von DS 3). Außerdem ist es möglich, daß man die Düsen 5 erst dann mit der Hochdruck-Schneidflüssigkeit beaufschlagt, nachdem sie ein Stück ihrer Wegstrecke zurückgelegt haben, z. B. wenn sie ungefähr den mittleren Bereich der Papierbahn erreicht haben.1, the ready position can be such that each of the pistons directly at the end of the pneumatic cylinder 1 (at the connection of the pressure line 7) located. In this case, the cutting devices 5 can intersect intersecting lines generate (Fig. 6 of DS 3). It is also possible that the nozzles 5 only then The high pressure cutting fluid is applied after it has traveled a distance have traveled e.g. B. when it reaches approximately the central area of the paper web to have.

    In Fig. 1 und 2 liegen die Drehachsen der Umlenkrollen 4 senkrecht zur Papierbahn 9. Günstiger ist es jedoch, die Anordnung derart zu treffen, daß die Drehachsen der Umlenkrollen 4 parallel zur Papierbahn 9 liegen, so daß sich jede der (zweiten) Hubeinrichtungen 2 bzw. 2' (in der Ansicht gemäß Fig. 1 ) oberhalb der betreffenden Schneideinrichtung 5 befindet. Dadurch können die beiden Schneideinrichtungen 5 näher aneinander gerückt werden (d.h. der Abstand c kann verkleinert werden).1 and 2, the axes of rotation of the deflection rollers 4 are perpendicular to the paper web 9. However, it is cheaper to make the arrangement such that the axes of rotation of the Deflection rollers 4 are parallel to the paper web 9, so that each of the (second) Lifting devices 2 and 2 '(in the view according to FIG. 1) above the relevant one Cutting device 5 is located. This allows the two cutting devices 5 to be closer can be moved closer together (i.e. the distance c can be reduced).

    Wesentliche Bauteile der in Figur 3 dargestellten Wickelmaschine sind eine antreibbare und horizontal verschiebbare Andrückwalze 30 und ein ebenfalls antreibbarer Tambour 31. Während eines normalen Wickelvorganges läuft die Papierbahn 9 über eine Leitwalze 32 und über die Andrückwalze 30 auf eine (im Durchmesser ständig anwachsende) Wickelrolle 33. Diese entsteht durch Bewickeln des Tambours 31, wobei sie mit der Andrückwalze 30 in Kontakt steht (strichpunktiert dargestellter Zustand). Essential components of the winding machine shown in Figure 3 are a drivable and horizontally displaceable pressure roller 30 and a drivable drum 31. During a normal winding process, the paper web 9 runs over a guide roller 32 and via the pressure roller 30 onto a winding roll (which is constantly increasing in diameter) 33. This is created by winding the drum 31, with the pressure roller 30 is in contact (dash-dotted state).

    Dabei wird der Tambour 31 zusammen mit der Wickelrolle 33 ständig entsprechend dem Durchmesser-Zuwachs - in der Ansicht gemäß Figur 3 nach rechts - verlagert, z.B. mittels eines Spindelantriebes 34. Zur Vorbereitung eines Tambourwechsels (wenn die Wickelrolle 33 nahezu den gewünschten Durchmesser erreicht hat) wird der Tambour 31 mit der Wickelrolle 33 von der Andrückwalze 30 entfernt in die mit vollen Linien dargestellte Position. Dabei drückt eine Hilfswalze 35 die ankommende Bahn 9 gegen die Wickelrolle 33. Nun wird ein neuer, noch leerer Tambour 36 in die Wickelmaschine eingelegt.The drum 31 together with the winding roller 33 is constantly in accordance with the Diameter increase - shifted to the right in the view according to FIG. 3, e.g. by means of a spindle drive 34. To prepare a reel change (if the winding roll 33 has almost reached the desired diameter), the drum 31 with the Winding roller 33 away from the pressure roller 30 into that shown in full lines Position. An auxiliary roller 35 presses the incoming web 9 against the winding roll 33. Now a new, still empty reel 36 is inserted into the winding machine.

    Vorzugsweise wird der neue Tambour in einer derartigen Position mit der Andrückwalze 30 in Kontakt gebracht, daß die noch zur Wickelrolle 33 laufende Papierbahn 9 den neuen Tambour 36 ein Stück weit umschlingt; der entstehende Umschlingungswinkel ist mit 8 bezeichnet. Vorzugsweise in dem mit 40 bezeichneten Bereich, also zwischen Leitwalze 32 und Andrückwalze 30 - oder oberhalb der Andrückwalze 30 oder zwischen Andrückwalze 30 und Hilfswalze 35 - ist eine Schneideinrichtung vorgesehen, mit einem oben beschriebenen Linear-Antriebs-Aggregat. Man kann eine einzige Schneideinrichtung vorsehen, welche die gesamte Papierbahn vom einen Bahnrand bis zum anderen Bahnrand durchschneidet oder es werden gemäß Figur 1 zwei Schneideinrichtungen vorgesehen. In jedem Fall wird dafür gesorgt, daß der an der Schnittlinie gebildete neue Bahnanfang auf den neuen Tambour 36 überführt wird, so daß dort das Bilden einer neuen Wickelrolle beginnen kann.The new drum is preferably in such a position with the pressure roller 30 brought into contact that the paper web 9 still running to the winding roll 33 the new Wraps around drum 36 a bit; the resulting wrap angle is 8 designated. Preferably in the area designated by 40, that is between guide roller 32 and pressure roller 30 - or above the pressure roller 30 or between the pressure roller 30 and auxiliary roller 35 - a cutting device is provided, with a top described linear drive unit. You can have a single cutter provide the entire paper web from one web edge to the other Cutting edge of the web or there are two cutting devices according to Figure 1 intended. In any case, it is ensured that the new one formed on the cutting line The beginning of the web is transferred to the new drum 36 so that a new one is formed there Winding roll can begin.

    Claims (11)

    Linearantriebs-Aggregat mit den folgenden Merkmalen: a) das Linearantriebs-Aggregat dient zum Bewegen eines Bauteils, insbesondere einer Schneideinrichtung (5) zwecks Durchtrennens einer laufenden Faserstoffbahn (9), z.B. Papier- oder Kartonbahn, vorzugsweise im Bereich einer Wickelmaschine; b) das zu bewegende Bauteil, z.B. die Schneideinrichtung (5), ist an eine "erste" Hochgeschwindigkeits-Hubeinrichtung (1) gekoppelt, die sich z.B. quer zur Bahnlaufrichtung über die Faserstoffbahn erstreckt; gekennzeichnet durch die folgenden Merkmale: c) in einer Bereitschaftsstellung des zu bewegenden Bauteils, z.B. der Schneideinrichtung (5), aus der die Bewegung, (z.B. ein Schneidvorgang) beginnen soll, übt die "erste" Hochgeschwindigkeits-Hubeinrichtung (1) auf das Bauteil (5) eine Beschleunigungskraft aus; d) das genannte Bauteil, z.B. die Schneideinrichtung (5) ist zusätzlich an eine Halteeinrichtung (2; 2') gekoppelt, die in der Bereitschaftsstellung das Bauteil (5) gegen die Beschleunigungskraft festhält; e) die Anordnung ist derart getroffen, daß ein Lösen der Halteeinrichtung (2; 2') das sofortige Bewegen des Bauteils (5) unter der Wirkung der genannten Beschleunigungskraft auslöst. Linear drive unit with the following features: a) the linear drive unit is used to move a component, in particular a cutting device (5) for the purpose of severing a running fibrous web (9), for example paper or cardboard web, preferably in the area of a winding machine; b) the component to be moved, for example the cutting device (5), is coupled to a "first" high-speed lifting device (1) which, for example, extends across the fibrous web transversely to the web running direction; characterized by the following features: c) in a ready position of the component to be moved, for example the cutting device (5) from which the movement (for example a cutting process) is to begin, the "first" high-speed lifting device (1) exerts an acceleration force on the component (5) ; d) said component, for example the cutting device (5), is additionally coupled to a holding device (2; 2 ') which, in the ready position, holds the component (5) against the acceleration force; e) the arrangement is such that releasing the holding device (2; 2 ') triggers the immediate movement of the component (5) under the effect of the acceleration force mentioned. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß die erste Hochgeschwindigkeits-Hubeinrichtung (1) ein an sich bekannter, vorzugsweise stangenloser Pneumatikzylinder ist, dessen Kolben (6) in der Bereitschaftsstellung mit Druck beaufschlagt ist.Unit according to claim 1, characterized in that the first High-speed lifting device (1) a known, preferably rodless pneumatic cylinder, the piston (6) of which is in the ready position is pressurized. Aggregat nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die genannte Halteeinrichtung eine "zweite" Hochgeschwindigkeits-Hubeinrichtung (2;2') ist.Unit according to claim 1 or 2, characterized in that said Holding device is a "second" high-speed lifting device (2; 2 '). Aggregat nach Anspruch 3, dadurch gekennzeichnet, daß am beweglichen Element (2a; 21) der zweiten Hochgeschwindigkeits-Hubeinrichtung (2; 2') mindestens eine Umlenkeinrichtung (4) für einen flexiblen Strang (3) befestigt ist, dessen eines Ende an das zu bewegende Bauteil (5) gekoppelt ist und dessen anderes Ende ortsfest gehalten ist, so daß er in der Bereitschaftsstellung unter Zugspannung steht.Unit according to claim 3, characterized in that on the movable element (2a; 21) of the second high-speed lifting device (2; 2 ') at least one Deflection device (4) for a flexible strand (3) is attached, one end of which is coupled to the component to be moved (5) and the other end of which is stationary is held so that it is under tension in the ready position. Aggregat nach Anspruch 4, gekennzeichnet durch die folgenden Merkmale: a) das zu bewegende Bauteil ist eine Flüssigkeitsstrahl-Schneideinrichtung (5) mit wenigstens einer Flüssigkeitsstrahldüse; b) der genannte flexible Strang (3) ist als eine Hochdruck-Schlauchleitung ausgebildet, die zum Zuführen der Schneidflüssigkeit zur Schneideinrichtung (5) dient. Unit according to claim 4, characterized by the following features: a) the component to be moved is a liquid jet cutting device (5) with at least one liquid jet nozzle; b) said flexible strand (3) is designed as a high-pressure hose line, which is used to supply the cutting fluid to the cutting device (5). Aggregat nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß das zu bewegende Bauteil ein Teil einer Laserstrahl-Schneideinrichtung ist.Unit according to one of claims 1-4, characterized in that the moving component is part of a laser beam cutting device. Aggregat nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß der Kolben (6) der ersten Hochgeschwindigkeits-Hubeinrichtung (1) dauernd mit dem Inneren eines Pneumatik-Druckspeichers (8) in Verbindung steht. Unit according to one of claims 2 to 6, characterized in that the Piston (6) of the first high-speed lifting device (1) with the Connected inside a pneumatic pressure accumulator (8). Aggregat nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die zweite Hochgeschwindigkeits-Hubeinrichtung (2') als eine an sich bekannte mechanische Lineareinheit ausgebildet ist, dessen linear bewegliches Element (21) mittels eines Zahnriemens (22) an einen Antriebsmotor (24) gekoppelt ist (Fig. 2).Unit according to one of claims 3 to 6, characterized in that the second high-speed lifting device (2 ') as a known per se mechanical linear unit is formed, the linearly movable element (21) is coupled to a drive motor (24) by means of a toothed belt (22) (FIG. 2). Aggregat nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Hubgeschwindigkeit oder die Hub-Beschleunigung der ersten Hochgeschwindigkeits-Hubeinrichtung (1) mit Hilfe der genannten Umlenkrolle (4) mindestens das 2-fache der Hubgeschwindigkeit bzw. der Hub-Beschleunigung der zweiten Hochgeschwindigkeits-Hubeinrichtung (2; 2') ist.Unit according to one of the preceding claims, characterized in that that the stroke speed or stroke acceleration of the first High-speed lifting device (1) with the aid of the mentioned deflection roller (4) at least twice the lifting speed or lifting acceleration of the second high-speed lifting device (2; 2 '). Tambourwechsel-System für eine kontinuierlich arbeitende Papier- oder Karton-Herstell- oder Veredelungsmaschine mit zwei gegenläufig beweglichen Schneideinrichtungen (5), dadurch gekennzeichnet, daß zwei gegenläufig wirkende Linearantriebs-Aggregate gemäß einem der Ansprüche 1 - 9 vorhanden sind.Reel change system for a continuously working paper or cardboard manufacturing or finishing machine with two counter-rotating Cutting devices (5), characterized in that two counter-acting Linear drive units according to one of claims 1-9 are present. Tambourwechsel-System nach Anspruch 10, dadurch gekennzeichnet, daß die Schneideinrichtungen (5) als Hochdruck-Flüssigkeitsstrahldüsen für einen Flüssigkeitsdruck im Bereich von 1000 bis 2000 bar oder darüber ausgebildet sind.Reel change system according to claim 10, characterized in that the Cutting devices (5) as high-pressure liquid jet nozzles for one Liquid pressure in the range of 1000 to 2000 bar or above are formed.
    EP99125161A 1999-03-10 1999-12-17 Linear drive device Expired - Lifetime EP1035052B1 (en)

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    DE19910581A DE19910581A1 (en) 1999-03-10 1999-03-10 Linear drive unit
    DE19910581 1999-03-10

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    Also Published As

    Publication number Publication date
    DE19910581A1 (en) 2000-09-14
    US6508429B1 (en) 2003-01-21
    EP1035052B1 (en) 2004-09-01
    CA2300320A1 (en) 2000-09-10
    CA2300320C (en) 2008-01-08
    EP1035052A3 (en) 2002-02-06
    ATE275085T1 (en) 2004-09-15
    DE59910393D1 (en) 2004-10-07

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