EP0397030B1 - Guiding device for an intermittently moving web - Google Patents

Guiding device for an intermittently moving web Download PDF

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Publication number
EP0397030B1
EP0397030B1 EP90108371A EP90108371A EP0397030B1 EP 0397030 B1 EP0397030 B1 EP 0397030B1 EP 90108371 A EP90108371 A EP 90108371A EP 90108371 A EP90108371 A EP 90108371A EP 0397030 B1 EP0397030 B1 EP 0397030B1
Authority
EP
European Patent Office
Prior art keywords
belt drive
roller
web
mount frame
pivotal
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
EP90108371A
Other languages
German (de)
French (fr)
Other versions
EP0397030A2 (en
EP0397030A3 (en
Inventor
Georg Johann Lindner
Wolfgang Leo Scheller
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.)
Koenig and Bauer AG
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Koenig and Bauer AG
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Filing date
Publication date
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Publication of EP0397030A2 publication Critical patent/EP0397030A2/en
Publication of EP0397030A3 publication Critical patent/EP0397030A3/en
Application granted granted Critical
Publication of EP0397030B1 publication Critical patent/EP0397030B1/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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/038—Controlling transverse register of web by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/152—Arrangement of roller on a movable frame
    • B65H2404/1521—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • B65H2404/15212—Arrangement of roller on a 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

Definitions

  • the invention relates to a device on printing machines for aligning an intermittently transported web.
  • DE-OS 23 65 668 a device which u.a. has an intermittent belt drive, a paper web store that can be subjected to negative pressure, and a continuous belt drive.
  • DE-OS 24 18 015 shows a device for winding a web.
  • This web has transport perforations and is moved back and forth by a drive roller.
  • the ends of the material web are two each coils that can be driven forwards and backwards.
  • the drive of the spools is controlled in dependence on the main drive, so that the web can be moved forwards and backwards in the device and is wound up or unwound by the spools.
  • the coil axes can be raised and lowered, so that there is an optional inclination of the coil. This is intended to prevent the material web from running when the material web is wound onto the spool.
  • a horizontally pivotable frame in which a plurality of rotatable rollers is provided. At least one of these rollers serves as a pull roller and exerts a moment on the web.
  • the frame can be swiveled to enable the course of the web to be corrected.
  • the invention has for its object to provide a means by means of which a deflection of a material web caused by a material store under vacuum or other influences, which is transported by a belt drive immediately downstream of the material web storage, is returned to a target position.
  • the invention is based in particular on the advantage that means are provided for pre-aligning the paper web in front of the deflection-generating paper web store. This enables an extraordinarily fast response behavior of the device according to the invention.
  • the device according to the invention is pivotally mounted by means of low-friction ball elements.
  • a wrap angle of the draw roller group is very large, which means that high accelerations can be achieved without slippage.
  • the coupling of the alignment movement of the pre-correction roller and the tension roller group is particularly advantageous. This can save additional actuators.
  • a drawing roller group 3 for intermittent or continuous drive of a paper web 4 is arranged in a printing press between two processing stations 1, 2 (e.g. printing unit, perforator).
  • the paper web 4 leaves the processing station 1 and is fed by means of a pivotable, rotatably mounted correction roller 6 and a rotatably mounted roller 7 to a web store 8 which can be pressurized, the paper web 4 partially wrapping around the two rollers 6, 7.
  • the guide roller 7 is adjustable and is provided to influence a paper web entry angle into the web store 8. Leaving the web store 8, the paper web 4 is first fed to the drive device 3 and then to the processing station 2.
  • the paper web drive device 3 has a driven draw roller 9 and an impression roller 11 which can be adjusted to the draw roller 9.
  • the pull roller 9 is rotatably mounted in a frame 12.
  • the impression roller 11 is mounted on both sides of the frame 12 in a lever 13 rotatably approximately in the center.
  • the levers 13 are each pivotably attached to the frame 12 by means of a first lever end. At each second lever end, these are articulated by means of a piston rod 16, each with a pressurizable piston-cylinder unit 17.
  • the cylinders 17 are attached to the sides of the frame 12.
  • An adjustable stop 18 limits the position of the impression roller 11 on the pull roller 9.
  • the frame 12 can be pivoted horizontally by means of spherical elements 20, 21 which are supported on a crossmember 22 stored.
  • the traverse 22 is fastened at its ends to the side frames 19, 25 of the printing press and extends transversely to the paper web transport direction.
  • the crossmember 22 has two T-beam pieces 24.
  • the T-beam pieces 24 are screwed to the square cross member 22 at a distance from one another by means of their foot parts 26.
  • the crossmember 22 has a downward-directed pin 28 which specifies the fulcrum for the horizontal pivoting movement of the frame 12.
  • the bolt 28 engages in a receptacle 29 of an upper frame plate 31 of the frame frame 12.
  • Lubricants provided between the bolts 28 and the receptacle 31 ensure a low-friction pivoting movement of the frame frame 12.
  • the upper frame plate 31 has a number e.g. 4 of bores 32 in which the lower ball elements 20 are arranged.
  • the upper spherical elements 21 are each arranged at a distance on a common, vertical axis 33.
  • the ball elements 21 are each arranged in a bore 34 in a carrier plate 36.
  • Two adjustable set screws 37 screwed into the carrier plate 36 and into the upper frame plate 31, hold the ball elements 20, 21 at the desired distance a.
  • the distance a is approximately equal to the thickness d (for example 10 mm) of the arms 39, 41 of the T-beams 24, which each extend between two spherical elements 20, 21, so that the spherical elements 20, 21 are located on an upper and lower side 42.43 of arms 39.41 support.
  • a further receptacle 44 for an actuator 46 is fastened on the upper frame plate 31.
  • the actuator 46 is composed of a ball screw drive 47 and a DC gear motor 48.
  • the motor 48 is screwed to the crossmember 22 by means of a fastening means 49 (e.g. clamp, flange, angle iron or the like).
  • Two support brackets 51 are attached to a rear edge 49 of the crossmember 22, as seen in the web transport direction.
  • two support brackets 53 are also attached to a rear edge 52 of the frame plate 31.
  • the support brackets 51, 53 each have a bore 54 for receiving a ball element 56, 57.
  • the ball elements 56, 57 support a bearing plate 58 which is arranged pivotably about a bolt 59.
  • the bolt 59 is attached to the frame plate 31 projecting centrally upwards.
  • the bearing plate 58 has a tab 61 with a bore 62, in which the bolt 59 engages. On its sides, the bearing plate 58 each has a bearing block 63, 64 in which the correction roller 6 is rotatably mounted. In addition, the bearing plate has on its sides an arm 66, 67 directed towards the inner wall of the side frames 19, 25, which carries a rotatably mounted roller 68, 69 at its end.
  • An angle 71, 72 which has an inclined plane 73, 74, is screwed to the inner walls of the side frames 19, 25.
  • the rollers 68, 69 are simultaneously in contact with one of the two inclined planes 73, 74.
  • the angles 71,72 are arranged so that they have an incline when viewed in the sheet transport direction.
  • FIG. 3 shows the positions of the paper web 4 as a function of the position of the rollers 6, 9, 11.
  • the solid line represents the target position of the paper web 4.
  • the actual position is dash-dotted; the position pre-corrected by means of the pre-correction roller 6 is shown in dashed lines.
  • a paper web 4 fed to the correction roller 6 has a desired position (solid line) or a e.g. As seen in the direction of transport, the actual position is offset to the left (dash-dotted line).
  • the paper web 4 is deflected by the correction roller 6 and fed to the suction box 8.
  • the paper web layer for example, after it leaves the suction box 8 and the drawing roller group 3, is from a target position (solid line) e.g. shifted to the left.
  • the extent of the deviation from the target position is detected by means of known web edge or line reading means 76.
  • Corresponding signals are fed to an evaluation circuit 77, which carries out a target / actual value comparison and supplies the actuating motor 48 with the determined actuating signals for path correction.
  • the servomotor 48 turns its spindle to the left or to the right and causes the draw roller group 3 to be inclined.
  • the pulling roller group 3 When the paper web 4 is offset, for example to the left, the pulling roller group 3 is pivoted to the left, counterclockwise, around a pivot point specified by the bolt 28 in the sheet transport direction. With this measure, the web offset is corrected immediately, the paper web is moved to the right.
  • the draw roller group 3 has now assumed an inclined position with respect to its starting position.
  • the paper web 4 is precorrected at an upstream position.
  • the correction roller 6 is provided, which moves the paper web 4 beyond the target position to the right into a pre-correction position (dashed line).
  • the correction roller 6 is pivoted clockwise.
  • the running paper web 4 is forced to an offset to the right, which the pulling roller group 3 immediately compensates for by a pivoting movement to the right - clockwise - whereby the pulling roller group 3 is returned to its starting position.
  • the frame frame 12 is pivoted about a fixed pivot, which is predetermined by the bolt 28.
  • Suitable means can be, for example, articulated levers that connect the crossmember 22 to the frame 12.
  • a pivot for the pivoting movement can also lie outside the frame 12.
  • the pivot point is then determined by an intersection of the lever extensions. It is also proposed to specify the pivoting movement of the frame 12 by means of control cams or guide rails.

Description

Die Erfindung betrifft eine Einrichtung an Druckmaschinen zum Ausrichten einer intermittierend transportierten Warenbahn.The invention relates to a device on printing machines for aligning an intermittently transported web.

Durch die DE-OS 23 65 668 ist eine Einrichtung bekannt, die u.a. einen intermittierenden Bandantrieb, einen mit Unterdruck beaufschlagbaren Papierbahnspeicher und einen kontinuierlichen Bandantrieb aufweist.From DE-OS 23 65 668 a device is known which u.a. has an intermittent belt drive, a paper web store that can be subjected to negative pressure, and a continuous belt drive.

Es ist bei der gezeigten Einrichtung DE-OS 23 65 668 jedoch von Nachteil, daß keine Mittel vorgesehen sind, um die Papierbahn seitlich auszurichten. Dies ist aber notwendig, da im Unterdruckspeicher Reibkräfte zur Geradführung der Bahn fehlen, die die Bahn in Transportmittellage halten. Bedingt durch eine ungleichmäßige Längung der Papierbahnkanten, verursacht durch unterschiedliche Papierbahndicke, Farb- bzw. Feuchtmitteleinwirkung oder Gummierung, neigt die Papierbahn dazu, im Unterdruckbahnspeicher aus ihrer Transportmittellage nach links oder rechts abzudriften.It is disadvantageous in the device shown DE-OS 23 65 668, however, that no means are provided for laterally aligning the paper web. This is necessary, however, because there are no frictional forces in the vacuum accumulator to guide the web in a straight line, which hold the web in the transport medium position. Due to an uneven elongation of the paper web edges, caused by different paper web thickness, the influence of color or dampening solution or rubber coating, the paper web tends to drift to the left or right from its transport medium position in the vacuum web storage.

Die DE-OS 24 18 015 zeigt eine Vorrichtung zum Aufwickeln einer Warenbahn. Diese Warenbahn weist Transportperforationen auf, und wird von einer Antriebswalze vorwärts- und rückwärtsbewegt. Die Enden der Materialbahn sind auf je zwei vorwärts- und rückwärts antreibbaren Spulen aufgewickelt. Der Antrieb der Spulen wird in Abhängigkeit vom Hauptantrieb gesteuert, so daß in der Vorrichtung die Warenbahn vorwärts- und rückwärtsbewegt werden kann und von den Spulen auf- bzw. abgewickelt wird. Die Spulenachsen sind heb- und senkbar, so daß sich eine wahlweise Schrägstellung der Spule ergibt. Hierdurch soll ein Verlaufen der Materialbahn beim Aufwickeln der Materialbahn auf die Spule vermieden werden.DE-OS 24 18 015 shows a device for winding a web. This web has transport perforations and is moved back and forth by a drive roller. The ends of the material web are two each coils that can be driven forwards and backwards. The drive of the spools is controlled in dependence on the main drive, so that the web can be moved forwards and backwards in the device and is wound up or unwound by the spools. The coil axes can be raised and lowered, so that there is an optional inclination of the coil. This is intended to prevent the material web from running when the material web is wound onto the spool.

In der US-PS 36 02 191 wird ein horizontal verschwenkbarer Rahmen gezeigt, in dem eine Mehrzahl von rotierbaren Walzen vorgesehen ist. Mindestens eine dieser Walzen dient als Zugwalze und übt auf die Warenbahn ein Moment aus. Der Rahmen ist schwenkbar, um ein Korrigieren des Verlaufes der Warenbahn zu ermöglichen.In US-PS 36 02 191 a horizontally pivotable frame is shown, in which a plurality of rotatable rollers is provided. At least one of these rollers serves as a pull roller and exerts a moment on the web. The frame can be swiveled to enable the course of the web to be corrected.

Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung zu schaffen, mittels der eine durch einen mit Unterdruck beaufschlagten Warenbahnspeicher oder andere Einflüsse verursachte Auslenkung einer Warenbahn, die von einem dem Warenbahnspeicher unmittelbar nachgeordnetem Bandantrieb transportiert wird, in eine Sollage zurückgeführt wird.The invention has for its object to provide a means by means of which a deflection of a material web caused by a material store under vacuum or other influences, which is transported by a belt drive immediately downstream of the material web storage, is returned to a target position.

Die Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Anspruchs 1 gelöst.The object is achieved by the characterizing part of claim 1.

Der Erfindung liegt insbesondere der Vorteil zugrunde, daß Mittel vorgesehen sind, um eine Vorausrichtung der Papierbahn vor dem auslenkungserzeugenden Papierbahnspeicher vorzunehmen. Hierdurch wird ein außerordentlich schnelles Ansprechverhalten der erfindungsgemäßen Einrichtung ermöglicht.The invention is based in particular on the advantage that means are provided for pre-aligning the paper web in front of the deflection-generating paper web store. This enables an extraordinarily fast response behavior of the device according to the invention.

In vorteilhafter Ausgestaltung ist die erfindungsgemäße Einrichtung mittels reibungsarmer Kugelelemente schwenkbar gelagert. Ein Umschlingungswinkel der Zugwalzengruppe ist sehr groß, wodurch hohe Beschleunigungen ohne Schlupf verwirklicht werden können.In an advantageous embodiment, the device according to the invention is pivotally mounted by means of low-friction ball elements. A wrap angle of the draw roller group is very large, which means that high accelerations can be achieved without slippage.

Besonders vorteilhaft ist die Koppelung der Ausrichtbewegung von Vorkorrekturwalze und Zugwalzengruppe. Hierdurch können zusätzliche Stellaggregate eingespart werden.The coupling of the alignment movement of the pre-correction roller and the tension roller group is particularly advantageous. This can save additional actuators.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden beschrieben. Es zeigen:

Fig. 1
eine erfindungsgemäße Korrektureinrichtung in Bahntransportrichtung gesehen,
Fig. 2
eine schematische Zeichnung der Seitenansicht der Korrektureinrichtung,
Fig. 3
eine schematische Draufsicht auf die Walzen der Korrektureinrichtung.
An embodiment of the invention is shown in the drawings and is described below. Show it:
Fig. 1
seen a correction device according to the invention in the web transport direction,
Fig. 2
1 shows a schematic drawing of the side view of the correction device,
Fig. 3
is a schematic plan view of the rollers of the correction device.

In einer Druckmaschine ist zwischen zwei Bearbeitungsstationen 1,2 (z.B. Druckwerk, Perforator) eine Zugwalzengruppe 3 zum intermittierenden oder kontinuierlichem Antrieb einer Papierbahn 4 angeordnet. Die Papierbahn 4 verläßt die Bearbeitungsstation 1 und wird mittels einer schwenkbaren, drehbar gelagerten Korrekturwalze 6 und einer drehbar gelagerten Walze 7 einem mit Unterdruck beaufschlagbarem Warenbahnspeicher 8 zugeführt, wobei die Papierbahn 4 die beiden Walzen 6,7 teilweise umschlingt. Die Leitwalze 7 ist verstellbar gelagert und zur Beeinflussung eines Papierbahn-Einlaufwinkels in den Warenbahnspeicher 8 vorgesehen. Aus dem Warenbahnspeicher 8 austretend wird die Papierbahn 4 zunächst der Antriebseinrichtung 3 und dann der Bearbeitungsstation 2 zugeführt.A drawing roller group 3 for intermittent or continuous drive of a paper web 4 is arranged in a printing press between two processing stations 1, 2 (e.g. printing unit, perforator). The paper web 4 leaves the processing station 1 and is fed by means of a pivotable, rotatably mounted correction roller 6 and a rotatably mounted roller 7 to a web store 8 which can be pressurized, the paper web 4 partially wrapping around the two rollers 6, 7. The guide roller 7 is adjustable and is provided to influence a paper web entry angle into the web store 8. Leaving the web store 8, the paper web 4 is first fed to the drive device 3 and then to the processing station 2.

Die Papierbahnantriebseinrichtung 3 weist eine angetriebene Zugwalze 9 und eine an die Zugwalze 9 anstellbare Presseurwalze 11 auf. Die Zugwalze 9 ist in einem Gestellrahmen 12 drehbar gelagert. Die Presseurwalze 11 ist an beiden Seiten des Gestellrahmens 12 in jeweils einem Hebel 13 ca. mittig drehbar gelagert. Die Hebel 13 sind jeweils mittels eines ersten Hebelendes schwenkbar am Gestellrahmen 12 angebracht. An jeweils einem zweiten Hebelende sind diese gelenkig mittels jeweils einer Kolbenstange 16 mit jeweils einer druckbeaufschlagbaren Kolbenzylindereinheit 17 verbunden. Die Zylinder 17 sind an den Seiten des Gestellrahmens 12 befestigt. Ein einstellbarer Anschlag 18 begrenzt die Anstellung der Presseurwalze 11 an die Zugwalze 9.The paper web drive device 3 has a driven draw roller 9 and an impression roller 11 which can be adjusted to the draw roller 9. The pull roller 9 is rotatably mounted in a frame 12. The impression roller 11 is mounted on both sides of the frame 12 in a lever 13 rotatably approximately in the center. The levers 13 are each pivotably attached to the frame 12 by means of a first lever end. At each second lever end, these are articulated by means of a piston rod 16, each with a pressurizable piston-cylinder unit 17. The cylinders 17 are attached to the sides of the frame 12. An adjustable stop 18 limits the position of the impression roller 11 on the pull roller 9.

Der Gestellrahmen 12 ist mittels Kugelelementen 20, 21, die sich an einer Traverse 22 abstützen, horizontal schwenkbar gelagert. Die Traverse 22 ist an ihren Enden an den Seitengestellen 19,25 der Druckmaschine befestigt und erstreckt sich quer zur Papierbahntransportrichtung.The frame 12 can be pivoted horizontally by means of spherical elements 20, 21 which are supported on a crossmember 22 stored. The traverse 22 is fastened at its ends to the side frames 19, 25 of the printing press and extends transversely to the paper web transport direction.

Die Traverse 22 weist zwei T-Trägerstücke 24 auf. Die T-Trägerstücke 24 sind mittels ihrer Fußteile 26 an die quadratische Traverse 22 in einem Abstand voneinander angeschraubt.The crossmember 22 has two T-beam pieces 24. The T-beam pieces 24 are screwed to the square cross member 22 at a distance from one another by means of their foot parts 26.

An einem vorderen, auslaufseitigem Bereich der Papierbahn 4 in der Mitte der Traverse 22 weist diese einen nach unten gerichteten Bolzen 28 auf, der den Drehpunkt für die horizontale Schwenkbewegung des Gestellrahmens 12 vorgibt. Der Bolzen 28 greift in eine Aufnahme 29 einer oberen Gestellplatte 31 des Gestellrahmens 12 ein. Zwischen den Bolzen 28 und der Aufnahme 31 vorgesehene Gleitmittel gewährleisten eine reibungsarme Schwenkbewegung des Gestellrahmens 12.At a front, outlet-side area of the paper web 4 in the middle of the crossmember 22, the crossmember 22 has a downward-directed pin 28 which specifies the fulcrum for the horizontal pivoting movement of the frame 12. The bolt 28 engages in a receptacle 29 of an upper frame plate 31 of the frame frame 12. Lubricants provided between the bolts 28 and the receptacle 31 ensure a low-friction pivoting movement of the frame frame 12.

Die obere Gestellplatte 31 weist eine Anzahl z.B. 4 von Bohrungen 32 auf, in welchen die unteren Kugelelemente 20 angeordnet sind. Gegenüber den unteren Kugelelementen 20 sind die oberen Kugelelemente 21 jeweils in einem Abstand auf einer gemeinsamen, vertikalen Achse 33 angeordnet. Die Kugelelemente 21 sind jeweils in einer Bohrung 34 einer Trägerplatte 36 angeordnet.The upper frame plate 31 has a number e.g. 4 of bores 32 in which the lower ball elements 20 are arranged. Compared to the lower spherical elements 20, the upper spherical elements 21 are each arranged at a distance on a common, vertical axis 33. The ball elements 21 are each arranged in a bore 34 in a carrier plate 36.

Jeweils zwei verstellbare, in die Trägerplatte 36 und in die obere Gestellplatte 31 eingeschraubte Stellschrauben 37 halten die Kugelelemente 20,21 in dem gewünschten Abstand a. Der Abstand a ist ungefähr gleich der Dicke d (z.B. 10 mm) der Arme 39,41 der T-Träger 24, die sich jeweils zwischen zwei Kugelelementen 20,21 erstrecken, so daß sich die Kugelelemente 20,21 an einer Ober- und Unterseite 42,43 der Arme 39,41 abstützen.Two adjustable set screws 37, screwed into the carrier plate 36 and into the upper frame plate 31, hold the ball elements 20, 21 at the desired distance a. The distance a is approximately equal to the thickness d (for example 10 mm) of the arms 39, 41 of the T-beams 24, which each extend between two spherical elements 20, 21, so that the spherical elements 20, 21 are located on an upper and lower side 42.43 of arms 39.41 support.

Auf der oberen Gestellplatte 31 ist eine weitere Aufnahme 44 für einen Stellantrieb 46 befestigt. Der Stellantrieb 46 setzt sich zusammen aus einem Kugelumlaufspindel-Trieb 47 und einem Gleichstromgetriebemotor 48. Der Motor 48 ist mittels eines Befestigungsmittels 49 (z.B. Schelle, Flansch, Winkeleisen oder dergleichen) an der Traverse 22 angeschraubt.A further receptacle 44 for an actuator 46 is fastened on the upper frame plate 31. The actuator 46 is composed of a ball screw drive 47 and a DC gear motor 48. The motor 48 is screwed to the crossmember 22 by means of a fastening means 49 (e.g. clamp, flange, angle iron or the like).

An einer in Bahntransportrichtung gesehen hinteren Kante 49 der Traverse 22 sind zwei Stützwinkel 51 befestigt. In gleicher Weise sind an einer Hinterkante 52 der Gestellplatte 31 ebenfalls zwei Stützwinkel 53 befestigt. Die Stützwinkel 51,53 weisen jeweils eine Bohrung 54 zur Aufnahme eines Kugelelementes 56,57 auf. die Kugelelemente 56,57 stützen eine Lagerplatte 58 ab, die schwenkbar um einen Bolzen 59 angeordnet ist. Der Bolzen 59 ist an der Gestellplatte 31 mittig nach oben herausragend befestigt.Two support brackets 51 are attached to a rear edge 49 of the crossmember 22, as seen in the web transport direction. In the same way, two support brackets 53 are also attached to a rear edge 52 of the frame plate 31. The support brackets 51, 53 each have a bore 54 for receiving a ball element 56, 57. the ball elements 56, 57 support a bearing plate 58 which is arranged pivotably about a bolt 59. The bolt 59 is attached to the frame plate 31 projecting centrally upwards.

Die Lagerplatte 58 weist eine Lasche 61 mit einer Bohrung 62 auf, in die der Bolzen 59 eingreift. An ihren Seiten weist die Lagerplatte 58 jeweils einen Lagerbock 63,64 auf, in dem die Korrekturwalze 6 drehbar gelagert ist. Außerdem weist die Lagerplatte an ihren Seiten jeweils einen auf die Innenwand der Seitengestelle 19,25 gerichteten Arm 66,67 auf, der an seinem Ende eine drehbar gelagerte Rolle 68,69 trägt.The bearing plate 58 has a tab 61 with a bore 62, in which the bolt 59 engages. On its sides, the bearing plate 58 each has a bearing block 63, 64 in which the correction roller 6 is rotatably mounted. In addition, the bearing plate has on its sides an arm 66, 67 directed towards the inner wall of the side frames 19, 25, which carries a rotatably mounted roller 68, 69 at its end.

An die Innenwände der Seitengestelle 19,25 ist jeweils ein Winkel 71,72 angeschraubt, der eine schiefe Ebene 73,74 aufweist. Die Rollen 68,69 stehen gleichzeitig mit jeweils einer der beiden schiefen Ebenen 73,74 in Kontakt. Die Winkel 71,72 sind so angeordnet, daß sie in Bogentransportrichtung gesehen eine Steigung aufweisen.An angle 71, 72, which has an inclined plane 73, 74, is screwed to the inner walls of the side frames 19, 25. The rollers 68, 69 are simultaneously in contact with one of the two inclined planes 73, 74. The angles 71,72 are arranged so that they have an incline when viewed in the sheet transport direction.

Fig. 3 zeigt die Lagen der Papierbahn 4 in Abhängigkeit von der Stellung der Walzen 6,9,11. Die durchgezogene Linie stellt die Sollage der Papierbahn 4 dar. Die Istlage ist strichpunktiert; die mittels der Vorkorrekturwalze 6 vorkorrigierte Lage ist gestrichelt dargestellt.3 shows the positions of the paper web 4 as a function of the position of the rollers 6, 9, 11. The solid line represents the target position of the paper web 4. The actual position is dash-dotted; the position pre-corrected by means of the pre-correction roller 6 is shown in dashed lines.

Eine der Korrekturwalze 6 zugeführte Papierbahn 4 weist eine Sollage (durchgezogene Linie) bzw. eine z.B. in Transportrichtung gesehen nach links versetzte Istlage (strichpunktierte Linie) auf. Die Papierbahn 4 wird durch die Korrekturwalze 6 umgelenkt und dem Saugkasten 8 zugeführt. Die Papierbahnlage ist z.B., nachdem sie den Saugkasten 8 und die Zugwalzengruppe 3 verläßt, aus einer Sollage (durchgezogene Linie) z.B. nach links versetzt. Das Maß der Abweichung aus der Sollage wird mittels bekannter Bahnkanten- oder Linienlesemittel 76 erfaßt. Es werden entsprechende Signale einer Auswertschaltung 77 zugeführt, die einen Soll-Istwertvergleich vornimmt und dem Stellmotor 48 die ermittelten Stellsignale zur Bahnkorrektur zuführt. Je nach Versatzrichtung der Papierbahn 4 dreht der Stellmotor 48 seine Spindel links oder rechts herum und bewirkt, daß die Zugwalzengruppe 3 schräg gestellt wird.A paper web 4 fed to the correction roller 6 has a desired position (solid line) or a e.g. As seen in the direction of transport, the actual position is offset to the left (dash-dotted line). The paper web 4 is deflected by the correction roller 6 and fed to the suction box 8. The paper web layer, for example, after it leaves the suction box 8 and the drawing roller group 3, is from a target position (solid line) e.g. shifted to the left. The extent of the deviation from the target position is detected by means of known web edge or line reading means 76. Corresponding signals are fed to an evaluation circuit 77, which carries out a target / actual value comparison and supplies the actuating motor 48 with the determined actuating signals for path correction. Depending on the direction of offset of the paper web 4, the servomotor 48 turns its spindle to the left or to the right and causes the draw roller group 3 to be inclined.

Bei einem Versatz der Papierbahn 4 beispielsweise nach links wird die Zugwalzengruppe 3 um einen durch den Bolzen 28 vorgegebenen Drehpunkt in Bogentransportrichtung gesehen links herum - gegen den Uhrzeigersinn - geschwenkt. Durch diese Maßnahme wird der Bahnversatz sofort korrigiert, die Papierbahn wird nach rechts versetzt. Die Zugwalzengruppe 3 hat gegenüber ihrer Ausgangsstellung nun eine Schrägstellung eingenommen.When the paper web 4 is offset, for example to the left, the pulling roller group 3 is pivoted to the left, counterclockwise, around a pivot point specified by the bolt 28 in the sheet transport direction. With this measure, the web offset is corrected immediately, the paper web is moved to the right. The draw roller group 3 has now assumed an inclined position with respect to its starting position.

Um die Zugwalzengruppe 3 wieder in ihre Ausgangsstellung zurückführen zu können, ohne einen Versatz der Papierbahn 4 hervorzurufen, wird die Papierbahn 4 an einer vorgelagerten Stelle vorkorrigiert. Zu diesem Zweck ist die Korrekturwalze 6 vorgesehen, die die Papierbahn 4 über die Sollage hinaus nach rechts in eine Vorkorrekturlage (gestrichelte Linie) bewegt.In order to be able to return the draw roller group 3 to its starting position without causing an offset of the paper web 4, the paper web 4 is precorrected at an upstream position. For this purpose, the correction roller 6 is provided, which moves the paper web 4 beyond the target position to the right into a pre-correction position (dashed line).

Hierzu wird die Korrekturwalze 6 im Uhrzeigersinn verschwenkt. Durch die Vorkorrektur der Papierbahn 4 über die Sollage hinaus wird der ablaufenden Papierbahn 4 ein Versatz nach rechts aufgezwungen, den die Zugwalzengruppe 3 durch eine Schwenkbewegung um den Drehpunkt nach rechts - im Uhrzeigersinn - sofort ausgleicht, wodurch die Zugwalzengruppe 3 in ihre Ausgangslage zurückgeführt wird.For this purpose, the correction roller 6 is pivoted clockwise. By pre-correcting the paper web 4 beyond the target position, the running paper web 4 is forced to an offset to the right, which the pulling roller group 3 immediately compensates for by a pivoting movement to the right - clockwise - whereby the pulling roller group 3 is returned to its starting position.

Im Ausführungsbeispiel erfolgt eine Schwenkbewegung des Gestellrahmens 12 um einen festen Drehpol, der durch den Bolzen 28 vorgegeben ist. Selbstverständlich ist es auch möglich, den Gestellrahmen 12 um andere Drehpole zu schwenken. Geeignete Mittel können z.B. gelenkige Hebel sein, die die Traverse 22 mit dem Gestellrahmen 12 verbinden. In diesem Fall kann ein Drehpol für die Schwenkbewegung auch außerhalb des Gestellrahmens 12 liegen. Der Drehpol wird dann bestimmt durch einen Schnittpunkt der Hebelverlängerungen. Weiterhin wird vorgeschlagen, die Schwenkbewegung des Gestellrahmens 12 mittels Steuerkurven oder Führungsschienen vorzugeben.In the exemplary embodiment, the frame frame 12 is pivoted about a fixed pivot, which is predetermined by the bolt 28. Of course, it is also possible to pivot the frame 12 around other pivot poles. Suitable means can be, for example, articulated levers that connect the crossmember 22 to the frame 12. In this case, a pivot for the pivoting movement can also lie outside the frame 12. The pivot point is then determined by an intersection of the lever extensions. It is also proposed to specify the pivoting movement of the frame 12 by means of control cams or guide rails.

TeilelisteParts list

11
BearbeitungsstationProcessing station
22nd
BearbeitungsstationProcessing station
33rd
ZugwalzengruppeDraw roller group
44th
PapierbahnPaper web
55
--
66
KorrekturwalzeCorrection roller
77
Walzeroller
88th
Warenbahnspeicher, SaugkastenGoods store, suction box
99
ZugwalzePull roller
1010th
--
1111
PresseurwalzeImpression roller
1212th
GestellrahmenFrame
1313
Hebellever
1414
--
1515
--
1616
KolbenstangePiston rod
1717th
KolbenzylindereinheitPiston cylinder unit
1818th
Anschlagattack
1919th
SeitengestellSide frame
2020th
KugelelementSpherical element
2121
KugelelementSpherical element
2222
Traversetraverse
2323
Trägercarrier
2424th
T-TrägerstückT-beam
2525th
SeitengestellSide frame
2626
Fußteil (24)Footboard (24)
2727
--
2828
Bolzenbolt
2929
Aufnahmeadmission
3030th
--
3131
GestellplatteFrame plate
3232
Bohrung (20)Bore (20)
3333
Achseaxis
3434
Bohrung (21)Bore (21)
3535
--
3636
TrägerplatteCarrier plate
3737
StellschraubeSet screw
3838
--
3939
Arm (24)Arm (24)
4040
--
4141
Arm (24)Arm (24)
4242
Oberseite (39)Top (39)
4343
Unterseite (41)Underside (41)
4444
Aufnahmeadmission
4545
--
4646
StellantriebActuator
4747
Kugelumlaufspindel-TriebBall screw drive
4848
GleichstromgetriebemotorDC gear motor
4949
Kante (22)Edge (22)
5050
--
5151
StützwinkelSupport angle
5252
Hinterkante (31)Trailing edge (31)
5353
StützwinkelSupport angle
5454
Bohrung (51,53)Bore (51.53)
5555
--
5656
KugelelementSpherical element
5757
KugelelementSpherical element
5858
LagerplatteBearing plate
5959
Bolzenbolt
6060
--
6161
LascheTab
6262
Bohrung (61)Bore (61)
6363
LagerbockBearing block
6464
LagerbockBearing block
6565
--
6666
Arm (58)Arm (58)
6767
Arm (58)Arm (58)
6868
Rollerole
6969
Rollerole
7070
--
7171
Winkelangle
7272
Winkelangle
7373
Ebene (71)Level (71)
7474
Ebene (72)Level (72)
7575
--
7676
Bahnkanten- oder LinienlesemittelWeb edge or line reading means
7777
AuswertschaltungEvaluation circuit
7878
Drehpunkt (28)Pivot (28)
7979
Drehpunkt (59)Pivot (59)

Claims (11)

  1. Device for aligning an intermittently transported material web (4) which is continuously supplied to and guided away from a transporting device and which has a material web store (8) and an intermittent belt drive (3), this intermittent belt drive (3) being pivotal, characterized in that a pivotal correction roller (6) for pre-correcting the material web (4) before it runs into the belt drive (3) is provided.
  2. Device according to Claim 1, characterized in that the belt drive (12) is articulatedly connected to a correction roller (6) such that a pivotal movement of the correction roller (6) takes place in opposition to the pivotal movement of the belt drive (3).
  3. Device according to Claims 1 or 2, characterized in that the belt drive (3) is mounted in a pivotal mount frame (12).
  4. Device according to Claims 1 or 2, characterized in that the correction roller (6) is mounted on a bearing plate (58).
  5. Device according to one of Claims 1 to 4, characterized in that spherical elements (20, 21; 56, 57) are provided for the pivotal bearing of the mount frame (12) and the bearing plate (58).
  6. Device according to one of Claims 1 to 5, characterized in that a web edge or line reading means (76) is provided, in that the web edge reading means (76) is connected to an evaluating circuit (77) and the latter is connected to an adjusting drive (46).
  7. Device according to one of Claims 1 to 6, characterized in that guide means (71, 72) are provided for controlling the pivotal movement of the correction roller (6).
  8. Device according to one of Claims 1 to 7, characterized in that the pivotal movement of the mount frame (12) takes place about a pin (28) fixed to the mount.
  9. Device according to one of Claims 1 to 8, characterized in that a pivotal movement of the mount frame (12) takes place about a centre of rotation located outside the mount frame (12).
  10. Device according to one of Claims 1 to 9, characterized in that articulated levers or cam plates are provided for the pivotal movement of the mount frame (12) about a centre of rotation located outside the mount frame (12).
  11. Device according to one of Claims 1 to 10, characterized in that the belt drive (3) has a driven roller (9) and a pressing roller (11) positioned against it.
EP90108371A 1989-05-09 1990-05-03 Guiding device for an intermittently moving web Expired - Lifetime EP0397030B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3915056 1989-05-09
DE3915056A DE3915056A1 (en) 1989-05-09 1989-05-09 DEVICE FOR ALIGNING AN INTERMITTENTLY TRANSPORTED TRUCK

Publications (3)

Publication Number Publication Date
EP0397030A2 EP0397030A2 (en) 1990-11-14
EP0397030A3 EP0397030A3 (en) 1991-08-21
EP0397030B1 true EP0397030B1 (en) 1994-08-03

Family

ID=6380275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108371A Expired - Lifetime EP0397030B1 (en) 1989-05-09 1990-05-03 Guiding device for an intermittently moving web

Country Status (7)

Country Link
US (1) US5074450A (en)
EP (1) EP0397030B1 (en)
JP (1) JPH07100559B2 (en)
CS (1) CS227390A2 (en)
DD (1) DD294231A5 (en)
DE (2) DE3915056A1 (en)
RU (1) RU1774932C (en)

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GB9007323D0 (en) * 1990-03-31 1990-05-30 Sumitomo Rubber Ind A method and apparatus for displacing a continuous flat sheet of material
US5182986A (en) * 1990-06-01 1993-02-02 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Method for realigning steel bands with respect to a longitudinal axis of a continuously working press
US5251553A (en) * 1990-06-01 1993-10-12 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Device for guiding steel bands
US5174096A (en) * 1990-10-05 1992-12-29 Ishida Scales Mfg. Co., Ltd. Form-fill-seal type packaging machine
JP2737492B2 (en) * 1991-11-14 1998-04-08 日本電気株式会社 Thermal transfer recording device
US5419509A (en) * 1993-05-12 1995-05-30 Krayenhagen; Everett D. Web tensioning device for automatic cross-machine tensioning of continuous webs
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DE19960649B4 (en) * 1999-12-16 2011-06-22 Goss Contiweb B.V. Device for correcting the lateral position of a printing material web in a web-fed rotary printing press
US6554223B1 (en) 2000-04-04 2003-04-29 The Procter & Gamble Company Apparatus and a method for aligning a web
DE10022926C2 (en) * 2000-05-11 2002-04-11 Erhardt & Leimer Gmbh Device for pivoting a rotating frame
DE10305802A1 (en) * 2003-02-12 2004-08-26 Voith Paper Patent Gmbh Winding operation for continuous web of esp. paper or cardboard, using web guiding element which is periodically positioned diagonally to web path to aid winding of web on roll
US7303066B2 (en) * 2004-02-27 2007-12-04 Accuweb, Inc. Steering guide
DE102006012972B4 (en) * 2006-03-21 2008-02-28 Texmag Gmbh Vertriebsgesellschaft Gmbh Device for controlling the lateral offset of webs of material
JP5849511B2 (en) * 2011-08-11 2016-01-27 セイコーエプソン株式会社 Conveying device and printing device
US11066263B2 (en) 2014-12-09 2021-07-20 Ricoh Company, Ltd. Sheet conveying device and image forming apparatus incorporating the sheet conveying device
US9776819B2 (en) 2014-12-09 2017-10-03 Ricoh Company, Ltd. Sheet conveying device and image forming apparatus incorporating the sheet conveying device

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Also Published As

Publication number Publication date
DE3915056A1 (en) 1990-11-15
CS227390A2 (en) 1991-08-13
DE59006666D1 (en) 1994-09-08
EP0397030A2 (en) 1990-11-14
DD294231A5 (en) 1991-09-26
EP0397030A3 (en) 1991-08-21
US5074450A (en) 1991-12-24
RU1774932C (en) 1992-11-07
JPH02310242A (en) 1990-12-26
JPH07100559B2 (en) 1995-11-01

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