EP1650150B1 - Device and method for guiding a laterally stable web - Google Patents

Device and method for guiding a laterally stable web Download PDF

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Publication number
EP1650150B1
EP1650150B1 EP05024169A EP05024169A EP1650150B1 EP 1650150 B1 EP1650150 B1 EP 1650150B1 EP 05024169 A EP05024169 A EP 05024169A EP 05024169 A EP05024169 A EP 05024169A EP 1650150 B1 EP1650150 B1 EP 1650150B1
Authority
EP
European Patent Office
Prior art keywords
web
rollers
backing
held
pivoted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP05024169A
Other languages
German (de)
French (fr)
Other versions
EP1650150A2 (en
EP1650150A3 (en
Inventor
Thomas Ernst
Harald LÖFFLER
Johannes Kaczmarek
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.)
Erhardt and Leimer GmbH
Original Assignee
Erhardt and Leimer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Erhardt and Leimer GmbH filed Critical Erhardt and Leimer GmbH
Publication of EP1650150A2 publication Critical patent/EP1650150A2/en
Publication of EP1650150A3 publication Critical patent/EP1650150A3/en
Application granted granted Critical
Publication of EP1650150B1 publication Critical patent/EP1650150B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00Advancing webs
    • B65H20/02Advancing webs by friction roller
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00Registering, tensioning, smoothing or guiding webs
    • B65H23/02Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032Controlling transverse register of web
    • B65H23/038Controlling transverse register of web by rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00Registering, tensioning, smoothing or guiding webs
    • B65H23/04Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/414Winding
    • B65H2301/4148Winding slitting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/417Handling or changing web rolls
    • B65H2301/4187Relative movement of core or web roll in respect of mandrel
    • B65H2301/4189Cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/44Moving, forwarding, guiding material
    • B65H2301/443Moving, forwarding, guiding material by acting on surface of handled material
    • B65H2301/4431Moving, forwarding, guiding material by acting on surface of handled material by means with operating surfaces contacting opposite faces of material
    • B65H2301/44318Moving, forwarding, guiding material by acting on surface of handled material by means with operating surfaces contacting opposite faces of material between rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/10Rollers
    • B65H2404/11Details of cross-section or profile
    • B65H2404/112Means for varying cross-section
    • B65H2404/1122Means for varying cross-section for rendering elastically deformable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/10Rollers
    • B65H2404/13Details of longitudinal profile
    • B65H2404/133Limited number of active elements on common axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/10Rollers
    • B65H2404/14Roller pairs
    • B65H2404/142Roller pairs arranged on movable frame
    • B65H2404/1421Roller pairs arranged on movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/10Rollers
    • B65H2404/14Roller pairs
    • B65H2404/142Roller pairs arranged on movable frame
    • B65H2404/1421Roller pairs arranged on movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • B65H2404/14212Roller pairs arranged on movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis rotating, pivoting or oscillating around an axis perpendicular to the roller axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/10Rollers
    • B65H2404/14Roller pairs
    • B65H2404/144Roller pairs with relative movement of the rollers to / from each other
    • B65H2404/1442Tripping arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00Sensing or detecting means
    • B65H2553/40Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/42Cameras
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00Actuating means
    • B65H2555/10Actuating means linear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/17Nature of material
    • B65H2701/176Cardboard
    • B65H2701/1762Corrugated

Definitions

  • the invention relates to a device for guiding a transverse stable web, in particular a paper, board, corrugated or plastic web according to the preamble of claim 1. Furthermore, the invention relates to a method for guiding such a web according to the preamble of claim. 7
  • a device for guiding a transverse stable web which has a plurality of spaced transversely to the web running direction rollers. These rollers are held in a fork which is pivotable about an axis perpendicular to the web pivot axis by means of an actuator. By pivoting the rollers by means of the actuator, the roller axes can be aligned at an acute angle to the web direction of travel, so that the rollers on the web exert a lateral force, which is used to guide the web. In order to achieve a sufficient guiding effect by the rollers, it is necessary to press them with a corresponding force against the web. Therefore, a stationary support is provided on the web counterpart, which supports the web.
  • This known device for guiding a transverse stable web has been proven in practice, provided that the required lateral executives, which are to be introduced into the web, were sufficiently small.
  • this device has, however, proven to be in need of improvement, since the cutting knife or Riller immersed in the web exert such a large lateral force on the web that the rolls no longer work with the greatest possible contact pressure and maximum inclination to the web running direction be able to bring into their desired position sufficiently quickly.
  • From the EP 0 697 361 A is another web guiding device is known, which is formed by a plurality of rolls placed on the web and counter-rollers.
  • the counter-rollers are driven by drives that are assigned to each counter-roller. By these drives, the individual counter-rollers can be driven at different speeds, so that in this way the web is forced into a sheet run.
  • the rollers and counter rollers are not pivotable.
  • the rollers and counter-rollers are followed by a cross-cutting device that cuts across the running web transversely.
  • the invention has for its object to provide a device of the type mentioned, which provides an improved guiding effect and in particular in the field of cutting knives or scrapers can be used.
  • a method for guiding a web is to be created, which allows a rapid compensation of an occurred trajectory.
  • the device according to claim 1 comprises a plurality of rollers which can be pressed against the web, which faces an abutment.
  • the rollers are rotatably mounted independently of each other, so that they the web - seen in the direction - almost no resistance.
  • the rollers are transverse to the web running direction substantially perpendicular to the web plane axis kept pivotally, so that the rollers exert a perpendicular to their direction directed leadership force when pivoting on the web. Since the web is held between the rollers and the abutment in the clamping handle, relatively large holding forces can be achieved.
  • the rollers are located in the region of a longitudinal cutting blade or a riller, which is preferably downstream of the rollers.
  • the force exerted by the cutting blade or Riller on the web side force can be compensated by the roles anyway, so that the web can be almost completely utilized except for a small edge region.
  • How many rolls are used depends in particular on the web width and their physical properties and is therefore determined individually in the respective application.
  • corrugated board webs may be charged only with limited contact pressure of the rollers, without being permanently damaged.
  • too wide a width of the rollers results in their pivoting to undesirable shear forces acting on the web and could damage them. It is therefore cheaper in this case to use a plurality of rollers which are axially aligned and are independently rotatable.
  • the device according to claim 2 has a plurality of counter-rollers which form the abutment. Both the rollers and the counter-rollers are rotatably mounted independently of each other, so that they the web - seen in the direction - almost no resistance. The rollers and the counter-rollers are held transversely to the web running direction about a directed substantially perpendicular to the web plane axis, so that the rollers and the counter-rollers when pivoting on the web exert a directed perpendicular to their direction leadership. Since the web is held between the rollers and the counter-rollers in the clamping handle, relatively large holding forces can be achieved without hindering the web due to excessive friction in their course.
  • the counter-rollers support the action of the rollers due to their pivotability, so that on the web an unexpectedly large lateral guide force can be exercised.
  • the counter-rollers support the action of the rollers due to their pivotability, so that on the web an unexpectedly large lateral guide force can be exercised.
  • Many roles and counter-roles are used depends in particular on the web width and their physical properties and is therefore determined individually in each application.
  • corrugated board webs may be charged only with limited contact pressure of the rollers, without being permanently damaged.
  • too wide a width of the rollers results in their pivoting to undesirable shear forces acting on the web and could damage them. It is therefore cheaper in this case to use a plurality of rollers and counter-rollers, which are axially aligned and independently rotatable.
  • rollers Since the rollers rest with a considerable pressure on the counter-rollers, it comes in particular at the beginning of a new web to a jamming effect in the field of roles. Since the web is generally severed at splices, such congestion in the production process of the web is relatively common. It is therefore advantageous to drive at least one of the rollers or counter-rollers for rotation, so that it has a propulsive action on the web and a stowage of the web is reliably prevented. In principle, it would be advantageous to drive several or all rollers or counter-rollers.
  • the rollers are rigidly coupled to a common rotary drive, the individual rollers could no longer rotate independently of one another at different speeds, so that the advantage of using single rollers instead of a wide roller would be lost. It is therefore advantageous to hold the rollers or counter-rollers on a common shaft frictionally, which is driven by a rotary drive. Due to the frictional contact between the rollers and the shaft, the torque of the rotary drive is transmitted, while still the individual rollers can each have a different speed.
  • the space between the shaft and the rollers is filled with a tough as possible grease, which ensures optimum transmission of the torque of the shaft.
  • the shaft could also be magnetized, wherein the roller bearings are made in this case of highly conductive metal. The rotating shaft generates a magnetic rotating field, which in turn induces a magnetic vortex field in the rollers, with which the torque of the shaft can be transmitted without rigid coupling of the rollers.
  • rollers and counter-rollers are adjusted synchronously with one another.
  • the rollers and the counter-rollers could be adjusted via one actuator each, which are synchronized with each other via corresponding synchronization means. It is easier, however, if the counter-rollers with the rollers according to claim 3 via a transmission, preferably a linkage, are in operative connection with each other. In this case, the adjustment of the rollers and the counter-rollers of a common actuator and thus necessarily synchronously. Since only a single actuator is required, also simplifies the control of the pivoting unit.
  • the rollers are held adjustable against the web.
  • the rollers are therefore on the one hand pivotable about an axis directed approximately perpendicular to the web plane and on the other hand perpendicular to the web level adjustable so that they have two degrees of freedom.
  • the counter-rollers are mounted according to claim 4 only pivotable about a fixed axis, so that they are not adjustable in particular perpendicular to the fabric level. The counter-rollers therefore have only a single degree of freedom. This ensures that the web regardless of the set contact pressure of the rollers performs no movement perpendicular to the web level.
  • the counter-rollers can support the guiding action of the rollers as optimally as possible, it is advantageous according to claim 5, if they are pivotally supported about a common axis. This ensures that the rollers and the counter-rollers are exactly opposite each other in each pivotal position, so that the web is always optimally held in the clamping grip.
  • the rollers could be pressed by a spring against the web.
  • the pressing force of the rollers can be sensitively adjusted on the web, so that the device can be used for different webs.
  • the pressing force is adjusted accordingly, for example by changing the pressure in the pneumatic cylinder.
  • a cross-stable web is guided in the area of a knife or scraper.
  • the knife or the Riller exert considerable lateral forces on the web, so that correspondingly high management forces must be applied to compensate for these lateral forces.
  • the method according to claim 8 provides that several rollers are placed approximately centrally on the web and pressed against them, which faces an abutment. Due to the central position of the rollers whose tensile and shear action is optimally utilized on the web, so that there is a favorable web running correction.
  • the rollers are pivoted synchronously to each other transversely to the direction of web travel, so that the rollers together exert a corresponding, directed transversely to the direction of web travel force on the web.
  • the force exerted by the rollers on the web force is greater than the lateral force of the knife or scraper, so that even in the area of the knife or scraper precise guidance of the web is guaranteed.
  • the web edges damaging guide hooks that have been used in this area, omitted. Due to the exact guiding of the web, it can also be exploited except for a small edge area, which reduces the resulting waste accordingly.
  • the cutting blade or Riller sever the web as possible at the predetermined location.
  • This is realized according to claim 9 in the simplest manner, characterized in that the desired value of the web guiding is dependent on the position of the knife or riller.
  • a measured value which is proportional to the position of the knives or rillers is used directly as setpoint value.
  • a device 1 for guiding a transverse stable web 2 according to FIG. 1 has a plurality of rollers 3 and counter rollers 4.
  • the rollers 3 and counter rollers 4 are made of plastic, especially polyurethane and are up to a certain degree elastically deformable. This deformability is additionally increased by the formation of the rollers 3 or counter-rollers 4 with thin, not radially extending spokes 5.
  • the rollers 3 and counter rollers 4 lie flat on the web 2 and not linear, so that the contact pressure of the rollers 3 and counter rollers 4 distributed over a correspondingly larger area of the web 2. This reliably prevents damage to the material web 2 even when relatively high pressure forces of the rollers 3 are introduced.
  • the rollers 3 are freely rotatably mounted on axes 6, so that they are driven by the running in the direction 7 web 2 for rotation.
  • the axles 6 are held in forks 8, which are pivotally supported in a pivot bearing 9 of a receptacle 10.
  • the forks 8 are pressed by a pneumatic cylinder 10 'against the web 2, wherein the pressing force is adjustable by the pneumatic cylinder.
  • the forks 8 could also be pressed against the web 2 by a spring.
  • the receptacle 10 is held on a pivot pin 11, which in turn is pivotally supported in a frame 12. This frame 12 is held stationary above the web 2.
  • an actuator via a not shown linkage.
  • the rollers 3 can be pressed on the one hand via the pivot bearing 9 against the web 2 and on the other hand actively pivoted about the vertical axis A of the pivot pin 11. Take the rollers 3 at an acute angle to the web running direction 7 pointing position, so they exert on the web 2 a directed transversely to the web running direction 7 force.
  • rollers 3 exactly opposite an abutment 13 is provided in the form of counter-rollers 4, which are formed substantially equal to the rollers 3.
  • These rollers 4 are rotatably supported on a common shaft 14, which is supported in a fork 15.
  • This fork 15 is held directly on a pivot pin 16 whose axis is aligned with the axis A of the pivot pin 11.
  • the pivot pin 16 is rotatably supported in a frame 17 which is held stationary under the web 2.
  • a camera 20 In order to control the web 2 in their position, a camera 20 is schematically indicated, which detects either the web edge or a printed on the web marking and passes as the actual value of a control device.
  • a cutting blade 21 Located behind the camera 20 is a cutting blade 21, which is held transversely to the web travel direction 7 slidably and the web 2 severed longitudinally.
  • a riller 22 may be provided in this area, which compresses the web 2 in the running direction 7 more durable, to allow a subsequent folding of the web 2 on this line. Both the cutting blade 21 and the riller 22 exert considerable lateral forces on the web 2, in particular when they are displaced transversely to the web running direction 7, which must be compensated by the device 1.
  • FIG. 2 shows a view of the device 1 from above. From this illustration, in particular the structure of the fork 8 with the pivot bearing 9 shows.
  • the design of the fork 8 with three rollers 3 held thereon is merely exemplary and depends in particular on the width and physical properties of the web 2. It is also conceivable to provide alternatively only one or two or more than three rollers 3.
  • the rollers 3 may be pivotable in the pivot bearing 9 together or independently against the web 2. In the latter case, a separate spring is provided for each roller 3, which is biased against the web 2.
  • the course of the section line II for the sectional view according to FIG. 1 out the course of the section line II for the sectional view according to FIG. 1 out.
  • FIG. 3 shows a sectional view through the device according to FIG. 1 along the section line III-III.
  • the counter-rollers 4 are pivotally supported only about the pivot pin 16, so that the counter-rollers 4 in particular can not perform perpendicular to the plane extension of the web 2 directed movement.
  • the counter-rollers 4 are also held on the common shaft 14 which is rotatably supported in the fork 15.
  • the shaft 14 is rotated by a rotary drive 25 in rotation, wherein the space between the shaft 14 and the counter-rollers 4 is filled with a viscous grease. This grease transmits the torque exerted by the rotary drive 25 on the shaft 14, on the counter-rollers 4, without causing a rigid coupling of the counter-rollers 4.
  • the counter-rollers 4 therefore practice on the web 2 a directed in web direction of travel 7 Driving force, so that in particular at the beginning of a web 2 no jam in the area of the rollers 3 and counter rollers 4 is formed.
  • Alternatively to the representation according to FIG. 3 could also be provided more or less counter-rollers 4.
  • more counter rollers 4 could be provided as rollers 3 in order to improve the effect of the abutment 13.
  • FIG. 4 shows a schematic view of the device 1 against the web direction of travel 7.
  • a schematically illustrated linkage 30 which causes a synchronization of the pivotal movements of the counter-rollers 4 with the rollers 3.
  • the linkage 30 is moved by a servomotor 31, which is exemplified as a hydraulic cylinder.
  • any other drive for example in the form of an electric motor, could be used.
  • a control device 32 is provided, which is influenced by a signal which is detected by the camera 20.
  • This camera signal is fed to an inverting input of a summer 33 whose non-inverting input receives a setpoint value 34.
  • the summer 33 is connected to a control amplifier 35, which preferably has a P, PI or PID behavior.
  • the control amplifier 35 in turn controls a servo motor 36, the only in FIG. 1 shown cutting blade 21 and Riller 22 moves laterally.
  • the cutting blade 21 and Riller 22 are each the web edge or tracked on the web marking line, so that a correct cut or a correct creasing is given.
  • the displacement of the cutting blade 21 or Riller 22 causes a corresponding trajectory of the web 2, which counteracts the device 1.
  • the output signal of the control amplifier 35 is connected to a setpoint input forming, non-inverting input of another summer 37 whose inverting input is fed with the signal of the camera 20.
  • This summer 37 is connected on the output side to a control amplifier 38, which also preferably has a P, PI or PID behavior.
  • This control amplifier 38 controls the servo motor 31, which pivots the rollers 3 and counter rollers 4 via the linkage 30 and thus counteracts the measured trajectory.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Advancing Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)

Abstract

The device (1) has roller (3) held, transversely movable, in the area of a cutter (21), which cuts the material flow line (2) longitudinally, and/or groove (22), which grooves the material flow line longitudinally. An independent claim is also included for a method for guiding of cross-sectionally stable material flow line.

Description

Die Erfindung betrifft eine Vorrichtung zum Führen einer querstabilen Warenbahn, insbesondere einer Papier-, Pappen-, Wellpappen- oder Kunststoffbahn gemäß dem Oberbegriff des Patentanspruchs 1. Außerdem betrifft die Erfindung ein Verfahren zum Führen einer derartigen Bahn gemäß dem Oberbegriff des Patentanspruchs 7.The invention relates to a device for guiding a transverse stable web, in particular a paper, board, corrugated or plastic web according to the preamble of claim 1. Furthermore, the invention relates to a method for guiding such a web according to the preamble of claim. 7

Aus der EP 0 519 261 B1 ist eine Vorrichtung zum Führen einer querstabilen Warenbahn bekannt, die mehrere, quer zur Warenbahnlaufrichtung beabstandete Rollen aufweist. Diese Rollen sind in einer Gabel gehalten, welche um eine senkrecht zur Warenbahn stehende Schwenkachse mittels eines Stellantriebs verschwenkbar ist. Durch Verschwenken der Rollen mittels des Stellantriebs können die Rollenachsen in einem spitzen Winkel zur Warenbahnlaufrichtung ausgerichtet werden, so daß die Rollen auf die Warenbahn eine seitliche Kraft ausüben, welche zum Führen der Warenbahn genutzt wird. Um eine ausreichende Führungswirkung durch die Rollen zu erzielen, ist es notwendig, diese mit einer entsprechenden Kraft gegen die Warenbahn zu drücken. An der Warenbahngegenseite ist deshalb eine stationäre Auflage vorgesehen, die die Warenbahn abstützt. Diese bekannte Vorrichtung zum Führen einer querstabilen Warenbahn hat sich in der Praxis bewährt, sofern die erforderlichen seitlichen Führungskräfte, die in die Warenbahn einzubringen sind, ausreichend klein waren. Insbesondere im Bereich von Längsschneidmessern oder Rillern hat sich diese Vorrichtung jedoch als verbesserungswürdig erwiesen, da die in die Warenbahn eintauchenden Schneidmesser oder Riller eine so große Seitenkraft auf die Bahn ausüben, daß die Rollen auch bei größtmöglichem Anpreßdruck und maximaler Schrägstellung zur Warenbahnlaufrichtung die Warenbahn nicht mehr ausreichend schnell in ihre Sollage bringen können.From the EP 0 519 261 B1 a device for guiding a transverse stable web is known, which has a plurality of spaced transversely to the web running direction rollers. These rollers are held in a fork which is pivotable about an axis perpendicular to the web pivot axis by means of an actuator. By pivoting the rollers by means of the actuator, the roller axes can be aligned at an acute angle to the web direction of travel, so that the rollers on the web exert a lateral force, which is used to guide the web. In order to achieve a sufficient guiding effect by the rollers, it is necessary to press them with a corresponding force against the web. Therefore, a stationary support is provided on the web counterpart, which supports the web. This known device for guiding a transverse stable web has been proven in practice, provided that the required lateral executives, which are to be introduced into the web, were sufficiently small. In particular, in the field of slitting knives or scoring this device has, however, proven to be in need of improvement, since the cutting knife or Riller immersed in the web exert such a large lateral force on the web that the rolls no longer work with the greatest possible contact pressure and maximum inclination to the web running direction be able to bring into their desired position sufficiently quickly.

Aus der US 3,147,898 A ist eine Führungsvorrichtung für eine laufende Bahn bekannt. Diese besteht aus zwei oberseitig auf die Warenbahn im Randbereich aufsetzbaren Rollen, denen auf der Unterseite der Warenbahn entsprechende Gegenrollen gegenüberliegen. Die Rollen und Gegenrollen sind um jeweils gemeinsame Achsen verschwenkbar gehalten, so daß diese im Winkel zur Bahnlaufrichtung angestellt werden können. Auf diese Weise ergibt sich eine quer zur Bahnlaufrichtung verlaufende Kraft, die zur Bahnlaufbeeinflussung herangezogen werden kann.From the US 3,147,898 A is a guide device for a moving web known. This consists of two upper side placed on the web in the edge region rollers, which opposite to the bottom of the web corresponding counter-rollers. The rollers and counter-rollers are held pivotable about respective common axes, so that they can be made at an angle to the web running direction. In this way, there is a transverse force to the web running direction, which can be used for web guiding influence.

Aus der EP 0 697 361 A ist eine weitere Bahnführungsvorrichtung bekannt, die von mehreren, auf die Warenbahn aufgesetzten Rollen und Gegenrollen gebildet ist. Die Gegenrollen sind dabei durch Antriebe angetrieben, die jeder einzelnen Gegenrolle zugeordnet sind. Durch diese Antriebe können die einzelnen Gegenrollen mit unterschiedlichen Drehzahlen angetrieben werden, so daß auf diese Weise die Bahn in einen Bogenlauf gezwungen wird. Die Rollen und Gegenrollen sind jedoch nicht verschwenkbar. Den Rollen und Gegenrollen ist eine Querschneidevorrichtung nachgeordnet, die die laufende Bahn quer durchtrennt.From the EP 0 697 361 A is another web guiding device is known, which is formed by a plurality of rolls placed on the web and counter-rollers. The counter-rollers are driven by drives that are assigned to each counter-roller. By these drives, the individual counter-rollers can be driven at different speeds, so that in this way the web is forced into a sheet run. However, the rollers and counter rollers are not pivotable. The rollers and counter-rollers are followed by a cross-cutting device that cuts across the running web transversely.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die eine verbesserte Führungswirkung bietet und insbesondere auch im Bereich von Schneidmessern oder Rillern einsetzbar ist. Außerdem soll ein Verfahren zum Führen einer Warenbahn geschaffen werden, das einen raschen Ausgleich eines aufgetretenen Bahnverlaufs erlaubt.The invention has for its object to provide a device of the type mentioned, which provides an improved guiding effect and in particular in the field of cutting knives or scrapers can be used. In addition, a method for guiding a web is to be created, which allows a rapid compensation of an occurred trajectory.

Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Patentanspruchs 1 sowie mit den Verfahrensschritten des Patentanspruchs 7 gelöst.This object is achieved with the features of claim 1 and with the method steps of claim 7.

Die Vorrichtung gemäß Anspruch 1 weist mehrere, gegen die Warenbahn drückbare Rollen auf, denen ein Widerlager gegenüberliegt. Die Rollen sind unabhängig voneinander drehbar gelagert, so daß sie der Warenbahn - in Laufrichtung gesehen - nahezu keinen Widerstand entgegenbringen. Die Rollen sind quer zur Bahnlaufrichtung um eine im wesentlichen senkrecht zur Warenbahnebene gerichtete Achse verschwenkbar gehalten, so daß die Rollen beim Verschwenken auf die Warenbahn eine senkrecht zu ihrer Laufrichtung gerichtete Führungskraft ausüben. Da die Warenbahn zwischen den Rollen und dem Widerlager im Klemmgriff gehalten ist, können relativ große Haltekräfte erzielt werden. Die Rollen befinden sich im Bereich eines die Warenbahn längs durchtrennenden Schneidmessers oder eines Rillers, das/der den Rollen vorzugsweise nachgeordnet ist. Dabei kann die vom Schneidmesser oder Riller auf die Warenbahn ausgeübte Seitenkraft von den Rollen trotzdem ausgeglichen werden, so daß die Warenbahn bis auf einen geringen Kantenbereich nahezu vollständig ausgenutzt werden kann. Wie viele Rollen eingesetzt werden, hängt insbesondere von der Warenbahnbreite und deren physikalischen Eigenschaften ab und wird daher im jeweiligen Anwendungsfall individuell festgelegt. Insbesondere Wellpappenbahnen dürfen nur mit begrenztem Anpreßdruck der Rollen belastet werden, ohne dauerhaft beschädigt zu werden. Eine zu große Breite der Rollen führt jedoch bei deren Verschwenkung zu unerwünschten Scherkräften, die auf die Warenbahn einwirken und diese beschädigen könnten. Es ist daher in diesem Fall günstiger, mehrere Rollen einzusetzen, die axial fluchtend gehalten und unabhängig voneinander drehbar sind. Damit kann beim Verschwenken der Rollen die jeweils im Innenkreis befindliche Rolle entsprechend langsamer als die im Außenkreis befindliche drehen, wodurch die unerwünschten Scherkräfte klein bleiben. Wird die Warenbahn von einer Schneideinrichtung quer durchtrennt, was beispielsweise bei einer Spleißstelle in der Warenbahn erfolgen muß, so werden das auslaufende wie zulaufende Endstück der Warenbahn aufgrund ihres freien Endes nicht exakt in ihrer Lage gehalten. Aufgrund des Klemmgriffs der mittig aufgesetzten Rollen ergibt sich jedoch eine ausreichend sichere Führungswirkung auf die Warenbahn, so daß auch derartige, durchtrennte Warenbahnstücke korrekt geführt werden. Damit können diese End- bzw. Anfangsstücke einer Warenbahn praktisch vollständig genutzt werden, so daß der entstehende Abfall entsprechend reduziert wird. Dies erhöht die Wirtschaftlichkeit der gesamten Anlage.The device according to claim 1 comprises a plurality of rollers which can be pressed against the web, which faces an abutment. The rollers are rotatably mounted independently of each other, so that they the web - seen in the direction - almost no resistance. The rollers are transverse to the web running direction substantially perpendicular to the web plane axis kept pivotally, so that the rollers exert a perpendicular to their direction directed leadership force when pivoting on the web. Since the web is held between the rollers and the abutment in the clamping handle, relatively large holding forces can be achieved. The rollers are located in the region of a longitudinal cutting blade or a riller, which is preferably downstream of the rollers. In this case, the force exerted by the cutting blade or Riller on the web side force can be compensated by the roles anyway, so that the web can be almost completely utilized except for a small edge region. How many rolls are used depends in particular on the web width and their physical properties and is therefore determined individually in the respective application. In particular corrugated board webs may be charged only with limited contact pressure of the rollers, without being permanently damaged. However, too wide a width of the rollers results in their pivoting to undesirable shear forces acting on the web and could damage them. It is therefore cheaper in this case to use a plurality of rollers which are axially aligned and are independently rotatable. Thus, during pivoting of the rollers, the respective roller located in the inner circle correspondingly slower than those located in the outer circle rotate, whereby the undesirable shear forces remain small. If the web is severed transversely by a cutting device, which must be done, for example, at a splice in the web, so are the expiring tapered tail of the web due to their free end is not held exactly in position. Due to the clamping handle of the centrally mounted rollers, however, results in a sufficiently secure guiding effect on the web, so that such, severed web pieces are performed correctly. Thus, these end or initial pieces of a web can be used almost completely, so that the resulting waste is reduced accordingly. This increases the economic efficiency of the entire system.

Aufgrund der besonders starken Seitenkräfte der Messer oder Riller ergeben sich bei deren Verstellung quer zur Bahnlaufrichtung besonders große Bahnverläufe, die nur schwer auszuregeln sind. In diesem Fall ist es vorteilhaft, bei einer seitlichen Verschiebung der Messer bzw. Riller den daraus resultierenden Bahnverlauf zu errechnen und bei der Bahnlaufregelung zu berücksichtigen. Damit ergibt sich ein besonders rascher Ausgleich des Bahnverlaufs, zumal die Rollen bereits verschwenkt werden, bevor der erwartete Bahnverlauf meßtechnisch erfaßt werden kann. Außerdem reduziert sich durch diese Maßnahme der von den Messern bzw. Rillern hervorgerufene Bahnverlauf, da die Rollen beim Verschieben der Messer bzw. Riller bereits in einem entsprechenden Winkel zur Bahnlaufrichtung eingestellt sind. Damit ist der von den Messern bzw. Rillern verursachte Bahnverlauf entsprechend geringer.Due to the particularly strong lateral forces of the knives or Riller result in their adjustment transversely to the web running direction particularly large trajectories, which are difficult ausuregeln. In this case, it is advantageous to calculate the resulting trajectory with a lateral displacement of the knives or Riller and to take into account in the web guiding. This results in a particularly rapid compensation of the trajectory, especially since the roles are already pivoted before the expected trajectory can be detected by measurement. In addition, reduced by this measure caused by the knives or creases trajectory, since the roles are already set at a corresponding angle to the web running direction when moving the knife or Riller. Thus, the trajectory caused by the knives or rills is correspondingly lower.

Die Vorrichtung gemäß Anspruch 2 weist mehrere Gegenrollen auf, die das Widerlager bilden. Sowohl die Rollen als auch die Gegenrollen sind unabhängig voneinander drehbar gelagert, so daß sie der Warenbahn - in Laufrichtung gesehen - nahezu keinen Widerstand entgegenbringen. Die Rollen und die Gegenrollen sind quer zur Bahnlaufrichtung um eine im wesentlichen senkrecht zur Warenbahnebene gerichtete Achse verschwenkbar gehalten, so daß die Rollen und die Gegenrollen beim Verschwenken auf die Warenbahn eine senkrecht zu ihrer Laufrichtung gerichtete Führungskraft ausüben. Da die Warenbahn zwischen den Rollen und den Gegenrollen im Klemmgriff gehalten ist, können relativ große Haltekräfte erzielt werden, ohne die Warenbahn durch übermäßige Reibung in ihrem Lauf zu behindern. Im Gegensatz zu einem festen Auflager, das durch die an der Warenbahn wirkenden Reibungskräfte sowohl den Bahnlauf wie auch die Bahnführung behindert, unterstützen die Gegenrollen die Wirkung der Rollen aufgrund deren Verschwenkbarkeit, so daß auf die Warenbahn eine unerwartet große seitliche Führungskraft ausgeübt werden kann. Wie viele Rollen und Gegenrollen eingesetzt werden, hängt insbesondere von der Warenbahnbreite und deren physikalischen Eigenschaften ab und wird daher im jeweiligen Anwendungsfall individuell festgelegt. Insbesondere Wellpappenbahnen dürfen nur mit begrenztem Anpreßdruck der Rollen belastet werden, ohne dauerhaft beschädigt zu werden. Eine zu große Breite der Rollen führt jedoch bei deren Verschwenkung zu unerwünschten Scherkräften, die auf die Warenbahn einwirken und diese beschädigen könnten. Es ist daher in diesem Fall günstiger, mehrere Rollen und Gegenrollen einzusetzen, die axial fluchtend gehalten und unabhängig voneinander drehbar sind. Damit kann beim Verschwenken der Rollen und Gegenrollen die jeweils im Innenkreis befindliche Rolle entsprechend langsamer als die im Außenkreis befindliche drehen, wodurch die unerwünschten Scherkräfte klein bleiben. Wird die Warenbahn von einer Schneideinrichtung quer durchtrennt, was beispielsweise bei einer Spleißstelle in der Warenbahn erfolgen muß, so werden das auslaufende wie zulaufende Endstück der Warenbahn aufgrund ihres freien Endes nicht exakt in ihrer Lage gehalten. Aufgrund des Klemmgriffs der mittig aufgesetzten Führungs- bzw. Gegenrollen ergibt sich jedoch eine ausreichend sichere Führungswirkung auf die Warenbahn, so daß auch derartige, durchtrennte Warenbahnstücke korrekt geführt werden. Damit können diese End- bzw. Anfangsstücke einer Warenbahn praktisch vollständig genutzt werden, so daß der entstehende Abfall entsprechend reduziert wird. Dies erhöht die Wirtschaftlichkeit der gesamten Anlage. Da die Rollen mit einem beträchtlichen Druck an den Gegenrollen anliegen, kommt es insbesondere beim Beginn einer neuen Warenbahn zu einer Stauwirkung im Bereich der Rollen. Da die Warenbahn bei Spleißstellen generell durchtrennt wird, ist eine derartige Staubildung im Produktionsprozeß der Warenbahn relativ häufig. Es ist daher günstig, wenigstens eine der Rollen bzw. Gegenrollen zur Drehung anzutreiben, so daß diese auf die Warenbahn eine Vortriebswirkung hat und eine Stauung der Warenbahn zuverlässig verhindert wird. Grundsätzlich wäre es vorteilhaft, mehrere oder alle Rollen bzw. Gegenrollen anzutreiben. Werden die Rollen jedoch starr mit einem gemeinsamen Drehantrieb gekoppelt, so könnten sich die einzelnen Rollen nicht mehr unabhängig voneinander mit unterschiedlichen Geschwindigkeiten drehen, so daß der Vorteil der Verwendung von Einzelrollen anstatt einer breiten Walze verloren ginge. Es ist deshalb günstig, die Rollen bzw. Gegenrollen auf einer gemeinsamen Welle reibschlüssig zu halten, die von einem Drehantrieb angetrieben wird. Durch den Reibkontakt zwischen den Rollen und der Welle wird das Drehmoment des Drehantriebs übertragen, wobei trotzdem die einzelnen Rollen eine jeweils unterschiedliche Drehzahl haben können. Vorzugsweise wird der Raum zwischen der Welle und den Rollen mit einem möglichst zähen Fett ausgefüllt, das eine optimale Übertragung des Drehmoments der Welle sicherstellt. Alternativ könnte die Welle auch magnetisiert sein, wobei die Rollenlager in diesem Fall aus gut leitendem Metall gefertigt sind. Die drehende Welle erzeugt ein magnetisches Drehfeld, welches wiederum ein magnetisches Wirbelfeld in den Rollen induziert, mit dem das Drehmoment der Welle ohne starre Kopplung der Rollen übertragen werden kann.The device according to claim 2 has a plurality of counter-rollers which form the abutment. Both the rollers and the counter-rollers are rotatably mounted independently of each other, so that they the web - seen in the direction - almost no resistance. The rollers and the counter-rollers are held transversely to the web running direction about a directed substantially perpendicular to the web plane axis, so that the rollers and the counter-rollers when pivoting on the web exert a directed perpendicular to their direction leadership. Since the web is held between the rollers and the counter-rollers in the clamping handle, relatively large holding forces can be achieved without hindering the web due to excessive friction in their course. In contrast to a fixed support which hinders both the web and the web guide by the frictional forces acting on the web, the counter-rollers support the action of the rollers due to their pivotability, so that on the web an unexpectedly large lateral guide force can be exercised. As Many roles and counter-roles are used depends in particular on the web width and their physical properties and is therefore determined individually in each application. In particular corrugated board webs may be charged only with limited contact pressure of the rollers, without being permanently damaged. However, too wide a width of the rollers results in their pivoting to undesirable shear forces acting on the web and could damage them. It is therefore cheaper in this case to use a plurality of rollers and counter-rollers, which are axially aligned and independently rotatable. Thus, during pivoting of the rollers and counter-rollers, the respective roller located in the inner circle correspondingly slower than those located in the outer circle rotate, whereby the undesirable shear forces remain small. If the web is severed transversely by a cutting device, which must be done, for example, at a splice in the web, so the expiring as tapered tail of the web due to their free end is not held exactly in position. Due to the clamping handle of the centrally mounted guide or counter rollers, however, results in a sufficiently secure guiding effect on the web, so that such, severed web pieces are performed correctly. Thus, these end or initial pieces of a web can be used almost completely, so that the resulting waste is reduced accordingly. This increases the economic efficiency of the entire system. Since the rollers rest with a considerable pressure on the counter-rollers, it comes in particular at the beginning of a new web to a jamming effect in the field of roles. Since the web is generally severed at splices, such congestion in the production process of the web is relatively common. It is therefore advantageous to drive at least one of the rollers or counter-rollers for rotation, so that it has a propulsive action on the web and a stowage of the web is reliably prevented. In principle, it would be advantageous to drive several or all rollers or counter-rollers. However, if the rollers are rigidly coupled to a common rotary drive, the individual rollers could no longer rotate independently of one another at different speeds, so that the advantage of using single rollers instead of a wide roller would be lost. It is therefore advantageous to hold the rollers or counter-rollers on a common shaft frictionally, which is driven by a rotary drive. Due to the frictional contact between the rollers and the shaft, the torque of the rotary drive is transmitted, while still the individual rollers can each have a different speed. Preferably, the space between the shaft and the rollers is filled with a tough as possible grease, which ensures optimum transmission of the torque of the shaft. Alternatively, the shaft could also be magnetized, wherein the roller bearings are made in this case of highly conductive metal. The rotating shaft generates a magnetic rotating field, which in turn induces a magnetic vortex field in the rollers, with which the torque of the shaft can be transmitted without rigid coupling of the rollers.

Da die Gegenrollen die Führungswirkung der Rollen unterstützen sollen, ist es zweckmäßig, wenn die Rollen und Gegenrollen zueinander synchron verstellt werden. Grundsätzlich könnten die Rollen und die Gegenrollen über jeweils einen Stellantrieb verstellt werden, die über entsprechende Synchronisationsmittel miteinander synchronisiert werden. Einfacher ist es jedoch, wenn die Gegenrollen mit den Rollen gemäß Anspruch 3 über ein Getriebe, vorzugsweise ein Gestänge, miteinander in Wirkverbindung stehen. In diesem Fall erfolgt die Verstellung der Rollen und der Gegenrollen von einem gemeinsamen Stellantrieb und damit zwangsläufig synchron. Da nur ein einziger Stellantrieb erforderlich ist, vereinfacht sich außerdem die Ansteuerung der Verschwenkeinheit.Since the counter-rollers should support the guiding action of the rollers, it is expedient if the rollers and counter-rollers are adjusted synchronously with one another. In principle, the rollers and the counter-rollers could be adjusted via one actuator each, which are synchronized with each other via corresponding synchronization means. It is easier, however, if the counter-rollers with the rollers according to claim 3 via a transmission, preferably a linkage, are in operative connection with each other. In this case, the adjustment of the rollers and the counter-rollers of a common actuator and thus necessarily synchronously. Since only a single actuator is required, also simplifies the control of the pivoting unit.

Um unabhängig von der Bahndicke einen ausreichenden Druck auf die Bahn ausüben zu können, sind die Rollen gegen die Warenbahn verstellbar gehalten. Die Rollen sind demnach einerseits um eine annähernd vertikal zur Warenbahnebene gerichtete Achse schwenkbar und andererseits senkrecht zur Warenbahnebene verstellbar, so daß sie über zwei Freiheitsgrade verfügen. Dem gegenüber sind die Gegenrollen gemäß Anspruch 4 lediglich um eine feste Achse schwenkbar gelagert, so daß sie insbesondere nicht senkrecht zur Warenbahnebene verstellbar sind. Die Gegenrollen besitzen demnach nur einen einzigen Freiheitsgrad. Dies stellt sicher, daß die Warenbahn unabhängig vom eingestellten Anpreßdruck der Rollen keinerlei Bewegung senkrecht zur Warenbahnebene ausführt. Dies ist insbesondere bei Wellpappenbahnen wichtig, da diese zur Vermeidung von Beschädigungen in möglichst einer Ebene ohne jegliche Umlenkungen geführt werden sollten. Da die Schwenkachse der Gegenrollen von deren Achse in Bahnlaufrichtung beabstandet ist, verursacht eine Verschwenkung der Gegenrollen um diese Schwenkachse eine gleichzeitige Verschiebung der Gegenrollen quer zur Bahnlaufrichtung. Diese Verschiebung ergibt eine besonders effektive Bahnlaufkorrektur.In order to be able to exert sufficient pressure on the web regardless of the web thickness, the rollers are held adjustable against the web. The rollers are therefore on the one hand pivotable about an axis directed approximately perpendicular to the web plane and on the other hand perpendicular to the web level adjustable so that they have two degrees of freedom. In contrast, the counter-rollers are mounted according to claim 4 only pivotable about a fixed axis, so that they are not adjustable in particular perpendicular to the fabric level. The counter-rollers therefore have only a single degree of freedom. This ensures that the web regardless of the set contact pressure of the rollers performs no movement perpendicular to the web level. This is particularly important in corrugated board, as this to avoid damage in as one plane without any deflections should be made. Since the pivot axis of the counter-rollers is spaced from the axis thereof in the web running direction, a pivoting of the counter-rollers about this pivot axis causes a simultaneous displacement of the counter-rollers transversely to the web running direction. This shift results in a particularly effective web running correction.

Damit die Gegenrollen die Führungswirkung der Rollen möglichst optimal unterstützen können, ist es gemäß Anspruch 5 vorteilhaft, wenn diese um eine gemeinsame Achse schwenkbar gehalten sind. Damit ist sichergestellt, daß die Rollen und die Gegenrollen in jeder Schwenklage einander exakt gegenüberliegen, so daß die Warenbahn stets optimal im Klemmgriff gehalten ist.So that the counter-rollers can support the guiding action of the rollers as optimally as possible, it is advantageous according to claim 5, if they are pivotally supported about a common axis. This ensures that the rollers and the counter-rollers are exactly opposite each other in each pivotal position, so that the web is always optimally held in the clamping grip.

Grundsätzlich könnten die Rollen mittels einer Feder gegen die Warenbahn gedrückt werden. Gemäß Anspruch 6 ist es jedoch vorteilhaft, die Rollen durch einen Stellantrieb, vorzugsweise einen Pneumatikzylinder, gegen die Warenbahn zu drücken. Damit kann die Andrückkraft der Rollen auf der Warenbahn feinfühlig eingestellt werden, so daß die Vorrichtung für unterschiedlichste Warenbahnen eingesetzt werden kann. Die Andrückkraft wird beispielsweise durch Ändern des Drucks im Pneumatikzylinder entsprechend angepaßt. Insbesondere ist daran gedacht, Bahnparameter, wie die Bahndicke oder die Bahnbreite zu messen und hieraus eine günstige Andrückkraft der Rollen zu berechnen, die mittels des Stellantriebs selbsttätig eingestellt wird.In principle, the rollers could be pressed by a spring against the web. According to claim 6, however, it is advantageous to press the rollers by an actuator, preferably a pneumatic cylinder, against the web. Thus, the pressing force of the rollers can be sensitively adjusted on the web, so that the device can be used for different webs. The pressing force is adjusted accordingly, for example by changing the pressure in the pneumatic cylinder. In particular, it is intended to measure web parameters, such as the web thickness or the web width, and to calculate therefrom a favorable pressing force of the rollers, which is set automatically by means of the actuator.

Bei dem Verfahren gemäß Anspruch 7 wird eine querstabile Warenbahn im Bereich eines Messers oder Rillers geführt. Das Messer oder der Riller üben dabei beträchtliche Seitenkräfte auf die Warenbahn aus, so daß entsprechend hohe Führungskräfte zum Ausgleich dieser Seitenkräfte aufgebracht werden müssen. Hierzu sieht das Verfahren gemäß Anspruch 8 vor, daß mehrere Rollen in etwa mittig auf die Warenbahn aufgesetzt und gegen diese gedrückt werden, denen ein Widerlager gegenüberliegt. Durch die mittige Lage der Rollen wird deren Zug- und Schubwirkung auf die Warenbahn optimal ausgenutzt, so daß sich eine günstige Bahnlaufkorrektur ergibt. Die Rollen werden synchron zueinander quer zur Bahnlaufrichtung verschwenkt, so daß die Rollen gemeinsam eine entsprechende, quer zur Bahnlaufrichtung gerichtete Stellkraft auf die Warenbahn ausüben. Damit kann erreicht werden, daß die von den Rollen auf die Warenbahn ausgeübte Stellkraft größer ist als die Seitenkraft des Messers oder Rillers, so daß auch im Bereich des Messers oder Rillers ein exaktes Führen der Warenbahn gewährleistet ist. Damit können die Warenbahnkanten beschädigende Führungshaken, die in diesem Bereich bisher eingesetzt wurden, entfallen. Durch das exakte Führen der Warenbahn kann diese außerdem bis auf einen geringen Kantenbereich ausgenutzt werden, was den anfallenden Abfall entsprechend reduziert.In the method according to claim 7, a cross-stable web is guided in the area of a knife or scraper. The knife or the Riller exert considerable lateral forces on the web, so that correspondingly high management forces must be applied to compensate for these lateral forces. For this purpose, the method according to claim 8 provides that several rollers are placed approximately centrally on the web and pressed against them, which faces an abutment. Due to the central position of the rollers whose tensile and shear action is optimally utilized on the web, so that there is a favorable web running correction. The rollers are pivoted synchronously to each other transversely to the direction of web travel, so that the rollers together exert a corresponding, directed transversely to the direction of web travel force on the web. It can thus be achieved that the force exerted by the rollers on the web force is greater than the lateral force of the knife or scraper, so that even in the area of the knife or scraper precise guidance of the web is guaranteed. Thus, the web edges damaging guide hooks that have been used in this area, omitted. Due to the exact guiding of the web, it can also be exploited except for a small edge area, which reduces the resulting waste accordingly.

Aufgrund der besonders starken Seitenkräfte der Messer oder Riller ergeben sich bei deren Verstellung quer zur Bahnlaufrichtung besonders große Bahnverläufe, die nur schwer auszuregeln sind. In diesem Fall ist es vorteilhaft, bei einer seitlichen Verschiebung der Messer bzw. Riller den daraus resultierenden Bahnverlauf zu errechnen und bei der Bahnlaufregelung zu berücksichtigen. Damit ergibt sich ein besonders rascher Ausgleich des Bahnverlaufs, zumal die Rollen bereits verschwenkt werden, bevor der erwartete Bahnverlauf meßtechnisch erfaßt werden kann. Außerdem reduziert sich durch diese Maßnahme der von den Messern bzw. Rillern hervorgerufene Bahnverlauf, da die Rollen beim Verschieben der Messer bzw. Riller bereits in einem entsprechenden Winkel zur Bahnlaufrichtung eingestellt sind. Damit ist der von den Messern bzw. Rillern verursachte Bahnverlauf entsprechend geringer.Due to the particularly strong lateral forces of the knives or Riller result in their adjustment transversely to the web running direction particularly large trajectories, which are difficult ausuregeln. In this case, it is advantageous to calculate the resulting trajectory with a lateral displacement of the knives or Riller and to take into account in the web guiding. This results in a particularly rapid compensation of the trajectory, especially since the roles are already pivoted before the expected trajectory can be detected by measurement. In addition, reduced by this measure caused by the knives or creases trajectory, since the roles are already set at a corresponding angle to the web running direction when moving the knife or Riller. Thus, the trajectory caused by the knives or rills is correspondingly lower.

Um unter allen Produktionsbedingungen einen exakten Bahnlauf sicherzustellen, ist es gemäß Anspruch 8 günstig, den Bahnverlauf zu messen und durch Verschwenkung der Rollen auf einen Sollwert zu regeln.In order to ensure an exact web run under all production conditions, it is advantageous according to claim 8 to measure the trajectory and to control by pivoting the rollers to a desired value.

Im Produktionsprozeß der Warenbahn ist es wichtig, daß die Schneidmesser oder Riller die Warenbahn möglichst an der vorgegebenen Stelle durchtrennen. Dies wird gemäß Anspruch 9 in einfachster Art und Weise dadurch realisiert, daß der Sollwert der Bahnlaufregelung von der Lage der Messer bzw. Riller abhängig ist. Vorzugsweise wird als Sollwert direkt ein der Lage der Messer bzw. Riller proportionaler Meßwert eingesetzt.In the production process of the web, it is important that the cutting blade or Riller sever the web as possible at the predetermined location. This is realized according to claim 9 in the simplest manner, characterized in that the desired value of the web guiding is dependent on the position of the knife or riller. Preferably, a measured value which is proportional to the position of the knives or rillers is used directly as setpoint value.

Zur Erzielung eines optimalen Schnittes bzw. einer korrekten Rillung der Warenbahn ist es gemäß Anspruch 10 vorteilhaft, das Messer bzw. den Riller mittels Regelung der Lage der Bahnkante oder einer Druckmarke nachzuführen. Bei einem seitlichen Bahnverlauf wird demnach das Messer bzw. der Riller entsprechend seitlich verschoben, so daß der Schnitt bzw. die Rillung trotz Bahnverlaufs korrekt vorgenommen wird. Zusätzlich wird die Warenbahn durch die Wirkung der schräggestellten Rollen wieder in ihre Ausgangslage zurückgebracht oder zumindest so weit festgehalten, daß ein weiterer Verlauf verhindert wird.In order to achieve an optimum cut or a correct scoring of the web, it is advantageous according to claim 10 to track the knife or the riller by means of regulation of the position of the web edge or a print mark. In a lateral trajectory, therefore, the knife or the Riller is moved accordingly laterally so that the cut or grooving is carried out correctly despite trajectory. In addition, the web is returned by the action of the inclined rollers back to their original position or at least held so far that a further course is prevented.

Der Erfindungsgegenstand sowie das erfindungsgemäße Verfahren werden beispielhaft anhand der Zeichnung erläutert, ohne den Schutzumfang zu beschränken.The subject invention and the inventive method are exemplified with reference to the drawing, without limiting the scope.

Es zeigt:

Figur 1
eine Schnittdarstellung einer Vorrichtung zum Führen einer Warenbahn,
Figur 2
eine Ansicht der Vorrichtung gemäß Figur 1 von oben,
Figur 3
eine Schnittdarstellung der Vorrichtung gemäß Figur 1 entlang der Schnittlinie III-III und
Figur 4
eine Ansicht der Vorrichtung gemäß Figur 1 entgegen der Warenbahnlaufrichtung mit schematischer Darstellung einer Regeleinrichtung.
It shows:
FIG. 1
a sectional view of a device for guiding a web,
FIG. 2
a view of the device according to FIG. 1 from above,
FIG. 3
a sectional view of the device according to FIG. 1 along the section line III-III and
FIG. 4
a view of the device according to FIG. 1 opposite to the web running direction with a schematic representation of a control device.

Eine Vorrichtung 1 zum Führen einer querstabilen Warenbahn 2 gemäß Figur 1 weist mehrere Rollen 3 und Gegenrollen 4 auf. Die Rollen 3 und Gegenrollen 4 bestehen aus Kunststoff, insbesondere Polyurethan und sind bis zu einem gewissen Grad elastisch verformbar. Diese Verformbarkeit wird durch die Ausbildung der Rollen 3 bzw. Gegenrollen 4 mit dünnen, nicht radial verlaufenden Speichen 5 zusätzlich erhöht. Damit liegen die Rollen 3 und Gegenrollen 4 auf der Warenbahn 2 flächenhaft und nicht linienhaft an, so daß sich der Anpreßdruck der Rollen 3 und Gegenrollen 4 auf eine entsprechend größere Fläche der Warenbahn 2 verteilt. Dies verhindert zuverlässig eine Beschädigung der Warenbahn 2 auch bei Einbringen relativer großer Andruckkräfte der Rollen 3.A device 1 for guiding a transverse stable web 2 according to FIG. 1 has a plurality of rollers 3 and counter rollers 4. The rollers 3 and counter rollers 4 are made of plastic, especially polyurethane and are up to a certain degree elastically deformable. This deformability is additionally increased by the formation of the rollers 3 or counter-rollers 4 with thin, not radially extending spokes 5. Thus, the rollers 3 and counter rollers 4 lie flat on the web 2 and not linear, so that the contact pressure of the rollers 3 and counter rollers 4 distributed over a correspondingly larger area of the web 2. This reliably prevents damage to the material web 2 even when relatively high pressure forces of the rollers 3 are introduced.

Die Rollen 3 sind an Achsen 6 frei drehbar gelagert, so daß sie von der in Richtung 7 laufenden Warenbahn 2 zur Drehung angetrieben werden. Die Achsen 6 sind in Gabeln 8 gehalten, welche in einem Schwenklager 9 einer Aufnahme 10 schwenkbar abgestützt sind. Die Gabeln 8 werden von einem Pneumatikzylinder 10' gegen die Warenbahn 2 gedrückt, wobei die Andrückkraft durch den Pneumatikzylinder einstellbar ist. Alternativ könnten die Gabeln 8 auch von einer Feder gegen die Warenbahn 2 gedrückt werden.The rollers 3 are freely rotatably mounted on axes 6, so that they are driven by the running in the direction 7 web 2 for rotation. The axles 6 are held in forks 8, which are pivotally supported in a pivot bearing 9 of a receptacle 10. The forks 8 are pressed by a pneumatic cylinder 10 'against the web 2, wherein the pressing force is adjustable by the pneumatic cylinder. Alternatively, the forks 8 could also be pressed against the web 2 by a spring.

Die Aufnahme 10 ist an einem Drehbolzen 11 gehalten, der wiederum in einem Rahmen 12 schwenkbar abgestützt ist. Dieser Rahmen 12 ist stationär über der Warenbahn 2 gehalten. Zum Verschwenken der Rollen 3 um eine vertikale Achse A des Drehbolzens 11 greift an der Aufnahme 10 ein Stellantrieb über ein nicht dargestelltes Gestänge an. Damit können die Rollen 3 einerseits über das Schwenklager 9 gegen die Warenbahn 2 gedrückt und andererseits um die vertikale Achse A des Drehbolzens 11 aktiv verschwenkt werden. Nehmen die Rollen 3 eine im spitzen Winkel zur Warenbahnlaufrichtung 7 zeigende Lage ein, so üben diese auf die Warenbahn 2 eine quer zur Warenbahnlaufrichtung 7 gerichtete Kraft aus.The receptacle 10 is held on a pivot pin 11, which in turn is pivotally supported in a frame 12. This frame 12 is held stationary above the web 2. For pivoting the rollers 3 about a vertical axis A of the pivot pin 11 engages the receptacle 10 an actuator via a not shown linkage. Thus, the rollers 3 can be pressed on the one hand via the pivot bearing 9 against the web 2 and on the other hand actively pivoted about the vertical axis A of the pivot pin 11. Take the rollers 3 at an acute angle to the web running direction 7 pointing position, so they exert on the web 2 a directed transversely to the web running direction 7 force.

Den Rollen 3 genau gegenüberliegend ist ein Widerlager 13 in Form von Gegenrollen 4 vorgesehen, die im wesentlichen gleich zu den Rollen 3 ausgebildet sind. Diese Rollen 4 sind auf einer gemeinsamen Welle 14 drehbar gehalten, welche in einer Gabel 15 abgestützt ist. Diese Gabel 15 ist unmittelbar an einem Drehbolzen 16 gehalten, dessen Achse mit der Achse A des Drehbolzens 11 fluchtet. Der Drehbolzen 16 ist in einem Rahmen 17 drehbar abgestützt, der stationär unter der Warenbahn 2 gehalten ist.The rollers 3 exactly opposite an abutment 13 is provided in the form of counter-rollers 4, which are formed substantially equal to the rollers 3. These rollers 4 are rotatably supported on a common shaft 14, which is supported in a fork 15. This fork 15 is held directly on a pivot pin 16 whose axis is aligned with the axis A of the pivot pin 11. The pivot pin 16 is rotatably supported in a frame 17 which is held stationary under the web 2.

Um die Warenbahn 2 in ihrer Lage regeln zu können, ist eine Kamera 20 schematisch angedeutet, die entweder die Bahnkante oder eine auf der Warenbahn aufgedruckte Markierung erfaßt und als Istwert einer Regeleinrichtung weitergibt. Unmittelbar hinter der Kamera 20 befindet sich ein Schneidmesser 21, welches quer zur Warenbahnlaufrichtung 7 verschiebbar gehalten ist und die Warenbahn 2 längs durchtrennt. Alternativ oder zusätzlich kann in diesem Bereich auch ein Riller 22 vorgesehen sein, der die Warenbahn 2 in Laufrichtung 7 dauerhafter zusammendrückt, um eine spätere Faltung der Warenbahn 2 an dieser Linie zu ermöglichen. Sowohl das Schneidmesser 21 als auch der Riller 22 üben insbesondere bei deren Verschiebung quer zur Warenbahnlaufrichtung 7 beträchtliche Seitenkräfte auf die Warenbahn 2 aus, die von der Vorrichtung 1 ausgeglichen werden müssen.In order to control the web 2 in their position, a camera 20 is schematically indicated, which detects either the web edge or a printed on the web marking and passes as the actual value of a control device. Immediately behind the camera 20 is a cutting blade 21, which is held transversely to the web travel direction 7 slidably and the web 2 severed longitudinally. Alternatively or additionally, a riller 22 may be provided in this area, which compresses the web 2 in the running direction 7 more durable, to allow a subsequent folding of the web 2 on this line. Both the cutting blade 21 and the riller 22 exert considerable lateral forces on the web 2, in particular when they are displaced transversely to the web running direction 7, which must be compensated by the device 1.

Figur 2 zeigt eine Ansicht der Vorrichtung 1 von oben. Aus dieser Darstellung geht insbesondere der Aufbau der Gabel 8 mit dem Schwenklager 9 hervor. Die Ausbildung der Gabel 8 mit drei daran gehaltenen Rollen 3 ist lediglich beispielhaft und hängt insbesondere von der Breite und den physikalischen Eigenschaften der Warenbahn 2 ab. Es ist auch vorstellbar, alternativ nur eine oder zwei bzw. mehr als drei Rollen 3 vorzusehen. Die Rollen 3 können im Schwenklager 9 gemeinsam oder unabhängig voneinander gegen die Warenbahn 2 verschwenkbar sein. Im letzten Fall ist für jede Rolle 3 eine gesonderte Feder vorgesehen, die gegen die Warenbahn 2 vorgespannt ist. Schließlich geht aus dieser Darstellung der Verlauf der Schnittlinie I-I für die Schnittdarstellung gemäß Figur 1 hervor. FIG. 2 shows a view of the device 1 from above. From this illustration, in particular the structure of the fork 8 with the pivot bearing 9 shows. The design of the fork 8 with three rollers 3 held thereon is merely exemplary and depends in particular on the width and physical properties of the web 2. It is also conceivable to provide alternatively only one or two or more than three rollers 3. The rollers 3 may be pivotable in the pivot bearing 9 together or independently against the web 2. In the latter case, a separate spring is provided for each roller 3, which is biased against the web 2. Finally, from this representation, the course of the section line II for the sectional view according to FIG. 1 out.

Figur 3 zeigt eine Schnittdarstellung durch die Vorrichtung gemäß Figur 1 entlang der Schnittlinie III-III. Im Gegensatz zur Halterung der Rollen 3 sind die Gegenrollen 4 lediglich um den Drehbolzen 16 schwenkbar gehalten, so daß die Gegenrollen 4 insbesondere keine senkrecht zur Ebenenerstreckung der Warenbahn 2 gerichtete Bewegung ausführen können. Die Gegenrollen 4 sind außerdem auf der gemeinsamen Welle 14 gehalten, die in der Gabel 15 drehbar abgestützt ist. Die Welle 14 wird von einem Drehantrieb 25 in Drehung versetzt, wobei der Raum zwischen der Welle 14 und den Gegenrollen 4 mit einem zähen Fett ausgefüllt ist. Dieses Fett überträgt das Drehmoment, das vom Drehantrieb 25 auf die Welle 14 ausgeübt wird, auf die Gegenrollen 4, ohne eine starre Kopplung der Gegenrollen 4 hervorzurufen. Die Gegenrollen 4 üben daher auf die Warenbahn 2 eine in Warenbahnlaufrichtung 7 gerichtete Antriebskraft aus, so daß insbesondere am Beginn einer Warenbahn 2 kein Stau im Bereich der Rollen 3 und Gegenrollen 4 entsteht. Alternativ zur Darstellung gemäß Figur 3 könnten auch mehr oder weniger Gegenrollen 4 vorgesehen sein. Insbesondere könnten mehr Gegenrollen 4 als Rollen 3 vorgesehen sein, um die Wirkung des Widerlagers 13 zu verbessern. FIG. 3 shows a sectional view through the device according to FIG. 1 along the section line III-III. In contrast to the support of the rollers 3, the counter-rollers 4 are pivotally supported only about the pivot pin 16, so that the counter-rollers 4 in particular can not perform perpendicular to the plane extension of the web 2 directed movement. The counter-rollers 4 are also held on the common shaft 14 which is rotatably supported in the fork 15. The shaft 14 is rotated by a rotary drive 25 in rotation, wherein the space between the shaft 14 and the counter-rollers 4 is filled with a viscous grease. This grease transmits the torque exerted by the rotary drive 25 on the shaft 14, on the counter-rollers 4, without causing a rigid coupling of the counter-rollers 4. The counter-rollers 4 therefore practice on the web 2 a directed in web direction of travel 7 Driving force, so that in particular at the beginning of a web 2 no jam in the area of the rollers 3 and counter rollers 4 is formed. Alternatively to the representation according to FIG. 3 could also be provided more or less counter-rollers 4. In particular, more counter rollers 4 could be provided as rollers 3 in order to improve the effect of the abutment 13.

Figur 4 zeigt eine schematische Ansicht der Vorrichtung 1 entgegen der Warenbahnlaufrichtung 7. An der Aufnahme 10 und am Rahmen 15 greift jeweils ein schematisch dargestelltes Gestänge 30 an, das eine Synchronisation der Schwenkbewegungen der Gegenrollen 4 mit den Rollen 3 bewirkt. Das Gestänge 30 wird von einem Stellmotor 31 bewegt, der beispielhaft als Hydraulikzylinder dargestellt ist. Alternativ könnte auch jeder andere Antrieb, beispielsweise in Form eines Elektromotors, eingesetzt werden. FIG. 4 shows a schematic view of the device 1 against the web direction of travel 7. At the receptacle 10 and the frame 15 engages in each case a schematically illustrated linkage 30, which causes a synchronization of the pivotal movements of the counter-rollers 4 with the rollers 3. The linkage 30 is moved by a servomotor 31, which is exemplified as a hydraulic cylinder. Alternatively, any other drive, for example in the form of an electric motor, could be used.

Um eine korrekte Führung der Warenbahn 2 zu erzielen, ist eine Regeleinrichtung 32 vorgesehen, die von einem Signal beeinflußt ist, welches von der Kamera 20 erfaßt wird. Dieses Kamerasignal wird einem invertierenden Eingang eines Summierers 33 zugeführt, dessen nicht invertierender Eingang einen Sollwert 34 erhält. Ausgangsseitig ist der Summierer 33 mit einem Regelverstärker 35 verbunden, der vorzugsweise ein P-, PI- oder PID-Verhalten aufweist. Der Regelverstärker 35 steuert wiederum einen Stellmotor 36 an, der die lediglich in Figur 1 dargestellten Schneidmesser 21 bzw. Riller 22 seitlich bewegt. Damit werden die Schneidmesser 21 bzw. Riller 22 jeweils der Warenbahnkante oder einer auf der Warenbahn aufgedruckten Markierungslinie nachgeführt, so daß ein korrekter Schnitt bzw. eine korrekte Rillung gegeben ist.In order to achieve a correct guidance of the web 2, a control device 32 is provided, which is influenced by a signal which is detected by the camera 20. This camera signal is fed to an inverting input of a summer 33 whose non-inverting input receives a setpoint value 34. On the output side, the summer 33 is connected to a control amplifier 35, which preferably has a P, PI or PID behavior. The control amplifier 35 in turn controls a servo motor 36, the only in FIG. 1 shown cutting blade 21 and Riller 22 moves laterally. Thus, the cutting blade 21 and Riller 22 are each the web edge or tracked on the web marking line, so that a correct cut or a correct creasing is given.

Die Verschiebung der Schneidmesser 21 bzw. Riller 22 verursacht jedoch einen entsprechenden Bahnverlauf der Warenbahn 2, dem die Vorrichtung 1 entgegenwirkt. Hierzu ist das Ausgangssignal des Regelverstärkers 35 mit einem den Sollwerteingang bildenden, nicht invertierenden Eingang eines weiteren Summierers 37 verbunden, dessen invertierender Eingang mit dem Signal der Kamera 20 gespeist wird. Dieser Summierer 37 ist ausgangsseitig mit einem Regelverstärker 38 verbunden, der ebenfalls vorzugsweise ein P-, PI- oder PID-Verhalten aufweist. Dieser Regelverstärker 38 steuert den Stellmotor 31 an, der die Rollen 3 und Gegenrollen 4 über die Gestänge 30 verschwenkt und damit dem gemessenen Bahnverlauf entgegenwirkt.However, the displacement of the cutting blade 21 or Riller 22 causes a corresponding trajectory of the web 2, which counteracts the device 1. For this purpose, the output signal of the control amplifier 35 is connected to a setpoint input forming, non-inverting input of another summer 37 whose inverting input is fed with the signal of the camera 20. This summer 37 is connected on the output side to a control amplifier 38, which also preferably has a P, PI or PID behavior. This control amplifier 38 controls the servo motor 31, which pivots the rollers 3 and counter rollers 4 via the linkage 30 and thus counteracts the measured trajectory.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Vorrichtungcontraption
22
Warenbahnweb
33
Rollerole
44
Gegenrollecounter-roller
55
Speichespoke
66
Achseaxis
77
WarenbahnlaufrichtungWeb running direction
88th
Gabelfork
99
Schwenklagerpivot bearing
1010
Aufnahmeadmission
10'10 '
Stellantriebactuator
1111
Drehbolzenpintle
1212
Rahmenframe
1313
Widerlagerabutment
1414
Wellewave
1515
Gabelfork
1616
Drehbolzenpintle
2020
Kameracamera
2121
Schneidmessercutting blade
2222
RillerRiller
2525
Drehantriebrotary drive
3030
Gestängelinkage
3131
Stellmotorservomotor
3232
Regeleinrichtungcontrol device
3333
Summierersumming
3434
Sollwertsetpoint
3535
Regelverstärkercontrol amplifier
3636
Stellmotorservomotor
3737
Summierersumming
3838
Regelverstärkercontrol amplifier
AA
Achseaxis

Claims (10)

  1. Device for guiding a laterally stable web (2), in particular a paper, paperboard, corrugated board or plastic web, the device (1) having a plurality of axially aligned rollers (3) which can be pressed against the web (2) and rotated independently of one another, which can be placed approximately centrally on the web (2) and are held such that they can be pivoted transversely with respect to the web running direction (7), and are pivoted by an actuating motor (31), which is controlled by a first control amplifier (38) in order to counteract a measured web run-off, a backing means (13) supporting the web (2) being opposite the rollers (3), characterized in that the rollers (3) are provided in the region of a cutting knife (21) severing the web (2) longitudinally and/or a scoring means (22) creasing the web (2) longitudinally, which is/are held such that it/they can be displaced transversely, and a summing device (33) is provided, the output of which is connected to a second control amplifier (35) which, from a displacement of the cutting knife (21) and/or of the scoring means (22), calculates the web run-off resulting therefrom and is connected to a further summing device (37), the output of which is connected to the first control amplifier (38).
  2. Device according to Claim 1, characterized in that the backing means (13) is formed by a plurality of axially aligned backing rollers (4) which can be rotated independently of one another and are held such that they can be pivoted transversely with respect to the web running direction (7), the web (2) being held in a clamping engagement between the rollers (3) and the backing rollers (4) and at least one of the rollers (3) and/or backing rollers (4) being driven in rotation, and at least two of the rollers (3) and/or backing rollers (4) being in frictional contact with a common shaft (14) which is driven by a rotary drive (25).
  3. Device according to Claim 2, characterized in that the backing rollers (4) are operatively connected to the rollers (3) via a gear mechanism (30) and can be pivoted by a common actuating drive (31).
  4. Device according to at least one of Claims 2 to 3, characterized in that the backing rollers (4) are mounted in a holder (15) which can be pivoted about a fixed axis (A) spaced apart from the backing roller axis (14) in the web running direction (7) and is otherwise immovable.
  5. Device according to at least one of Claims 2 to 4, characterized in that the rollers (3) and the backing rollers (4) are held such that they can be pivoted about a common axis (A).
  6. Device according to at least one of Claims 1 to 5, characterized in that the rollers (3) can be pressed against the web (2) by an actuating drive (10'), the pressing force of the rollers (3) being adjustable.
  7. Method for guiding a laterally stable web (2), in particular a paper, paperboard, corrugated board or plastic web, in which a plurality of axially aligned rollers (3) which can be rotated independently of one another are placed approximately centrally on the web (2), are pressed against the latter and are pivoted transversely with respect to the web running direction (7), characterized in that downstream of the rollers (3) there is arranged a cutting knife (21) severing the web (2) longitudinally and/or a scoring means (22) creasing the web (2) longitudinally, which is/are held such that it/they can be displaced transversely and, in the event of a displacement of the cutting knife (21) and/or of the scoring means (22), the web run-off resulting from this is calculated and taken into account in the web run control system.
  8. Method according to Claim 7, characterized in that the rollers (3) are pivoted by means of a control system as a function of a measured web run-off.
  9. Method according to Claim 7 or 8, characterized in that the desired value of the web run control system depends on the position of the cutting knife (21) and/or scoring means (22).
  10. Method according to at least one of Claims 7 to 9, characterized in that the cutting knife (21) and/or the scoring means (22) is/are tracked by controlling the position of a web edge or a marking printed on the web (2).
EP05024169A 1999-11-13 2000-09-29 Device and method for guiding a laterally stable web Expired - Lifetime EP1650150B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19954654 1999-11-13
DE10001816A DE10001816C1 (en) 1999-11-13 2000-01-18 Device and method for guiding a cross-stable web
EP00121212A EP1099655B1 (en) 1999-11-13 2000-09-29 Device and method for guiding a laterally stable web

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP00121212A Division EP1099655B1 (en) 1999-11-13 2000-09-29 Device and method for guiding a laterally stable web
EP00121212.5 Division 2000-09-29

Publications (3)

Publication Number Publication Date
EP1650150A2 EP1650150A2 (en) 2006-04-26
EP1650150A3 EP1650150A3 (en) 2006-05-03
EP1650150B1 true EP1650150B1 (en) 2010-02-24

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ID=26003896

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Application Number Title Priority Date Filing Date
EP05024169A Expired - Lifetime EP1650150B1 (en) 1999-11-13 2000-09-29 Device and method for guiding a laterally stable web
EP00121212A Expired - Lifetime EP1099655B1 (en) 1999-11-13 2000-09-29 Device and method for guiding a laterally stable web

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EP00121212A Expired - Lifetime EP1099655B1 (en) 1999-11-13 2000-09-29 Device and method for guiding a laterally stable web

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EP (2) EP1650150B1 (en)
JP (1) JP3442735B2 (en)
AT (2) ATE458687T1 (en)
CA (1) CA2325323C (en)
DE (3) DE10001816C1 (en)
ES (1) ES2254094T3 (en)

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JP3442735B2 (en) 2003-09-02
DE10001816C1 (en) 2001-06-21
CA2325323C (en) 2005-06-14
US6450381B1 (en) 2002-09-17
ES2254094T3 (en) 2006-06-16
EP1099655B1 (en) 2005-12-21
CA2325323A1 (en) 2001-05-13
EP1099655A2 (en) 2001-05-16
EP1099655A3 (en) 2003-03-19
DE50015875D1 (en) 2010-04-08
EP1650150A2 (en) 2006-04-26
ATE458687T1 (en) 2010-03-15
EP1650150A3 (en) 2006-05-03
JP2001163492A (en) 2001-06-19
ATE313508T1 (en) 2006-01-15
DE50011901D1 (en) 2006-01-26

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