EP0939702B1 - Method and device for conveying sheets - Google Patents

Method and device for conveying sheets Download PDF

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Publication number
EP0939702B1
EP0939702B1 EP97949862A EP97949862A EP0939702B1 EP 0939702 B1 EP0939702 B1 EP 0939702B1 EP 97949862 A EP97949862 A EP 97949862A EP 97949862 A EP97949862 A EP 97949862A EP 0939702 B1 EP0939702 B1 EP 0939702B1
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EP
European Patent Office
Prior art keywords
sheet
transport
pile
sheets
feeder
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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
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EP97949862A
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German (de)
French (fr)
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EP0939702A1 (en
Inventor
Hans-Bernhard BOLZA-SCHÜNEMANN
Reinhard Nerger
Arndt Jentzsch
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication of EP0939702A1 publication Critical patent/EP0939702A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines

Definitions

  • the invention relates to a method and a device for Transport of sheets in a sheet printing machine.
  • the uppermost sheet of a stack of feed sheets is gripped by lifting suction devices placed on the sheet in the rear area, transported vertically, transferred to transport suction devices also placed in the rear area and transported horizontally in the direction of a feed table (DE 363 4659).
  • the sheet lying on the feed table is detected by suction belts engaging below it in connection with guide elements arranged above the sheet and conveyed to the feed marks.
  • the alignment takes place in and across the sheet running direction (DE 362 2693).
  • the object of the invention is to provide a method and a device for transporting sheets without markings the printing area by conveyor and / or alignment elements also immediate second pass of the sheets through the printing press.
  • the method for transporting sheets is described using the sheet printing machine shown in FIG. 1.
  • the printing press contains a feeder sheet stack 1, conveying elements 2, further conveying elements 3, a sheet guiding cylinder 4 designed as a printing cylinder, which cooperates with two offset cylinders 5, with each offset cylinder being assigned a printing form cylinder 6 with two inking / dampening rollers 7, additional conveying elements 9 and a delivery sheet stack 11.
  • the run of the sheet 12 to be printed (sheet run) from the feeder sheet stack 1 to the delivery sheet stack 11 takes place in later-mentioned process steps, the means acting on the sheet during sheet travel acting only on the gripper edge 13 of the sheet or acting on the gripper edge.
  • the gripper edge 13 usually extends from the front edge of the sheet in the direction of the sheet extension over a distance of 3-5 mm.
  • the sheet to be printed is first transported from the feeder sheet stack 1 in the direction of the sheet guide cylinder 4, this direction is referred to as sheet travel direction 14.
  • the transfer of the sheets from the sheet guide cylinder 4 to the subsequent additional conveying elements 9 takes place counter to the sheet travel direction 14, this direction is referred to below as the sheet transport direction 15.
  • the delivery sheet stack 11 is arranged in the sheet travel direction in front of the feeder sheet stack 1. Furthermore, the stack of feeder sheets and the stack of delivery sheets are arranged in the same stacking plane 30.
  • the sheet conveyed from the feeder sheet stack 1 to the sheet guiding cylinder 4 is printed on the back of the sheet based on this machine scheme, based on the position of the sheet on the feeder sheet stack 1, and is placed on the delivery sheet stack 11 with the printed sheet back upward. It is possible to bring the delivery sheet stack into the position of the feeder sheet stack by moving or by turning and moving and since no elements grip and / or touch the printed surface when the sheet is running, i.e. only grip the gripper edge, the subsequent printing of the sheet front side of the sheet immediately kick off. Turning the stack offers the advantage that the contact edge relevant for high-quality printing is always at the front, ie when printing on the front of the sheet and when printing on the back of the sheet in the direction of sheet travel.
  • the sheet 12 resting on the feeder sheet stack 1 forms a first plane 16 and the sheet 12 has the gripper edge 13 on its front edge (FIG. 2).
  • the sheet 12 is gripped exclusively at this gripper edge 13 and transported through the printing press to the stack of delivery sheets.
  • the conveying element 2 By means of the conveying element 2, the sheet 12 is gripped at the gripper edge 13, raised to a second level 17 and thus separated from the feeder sheet stack 1.
  • the second level 17 lies above a sheet stop 18 fixedly arranged on the front edge of the feeder sheet stack 1 and is almost identical to the oscillating path of the conveying element 2.
  • the conveying element 2 carries out a swiveling movement initiated by a cam drive, not shown, transports the sheet 12 via a feed table 19 up to the feed marks 10 of the printing press.
  • the sheet 12 is released by the conveying element 2 at a release point 24.
  • the lifting and swiveling movement is carried out by two separate elements.
  • the sheet is gripped by a lifting conveyor element at the gripper edge and separated from the stack of feed sheets by a vertical movement.
  • the funding element (2) then takes over the sheet and transports it to the feed marks.
  • Alignment means 20 (FIG. 3) align the sheet 12 with the application marks 10 arranged transversely to the sheet travel direction 14 and with the side marks 21 arranged laterally on the feed table 19 in the sheet travel direction 14.
  • An alignment element 20 for each alignment direction is a pulse element which acts exclusively on the gripper edge 13 on the sheet to be aligned, which is arranged below the feed table 19 and interacts with a roller 22 arranged above the sheet.
  • the pulse element applies intermittent pulses of a significantly higher pulse frequency (200 to 400 hearts) relative to the bow clock frequency (5 hearts) on the bow. In this way, in the active phase of the impulses, a movement component is applied to the sheet under slip in the direction of the marks; in the impulse breaks there is a force-free relaxation of the bow.
  • the aligned sheet 12 on the gripper edge 13 is grasped, accelerated and transferred to the gripper system of the sheet guiding cylinder 4 by a further conveying element 3 arranged below the feed table 19 and designed as a pre-gripper.
  • the further conveying element 3 is preferably designed as a vibrating suction gripper and driven by a cam drive, not shown.
  • the movement sequence of the transport element - lifting and swinging movement - is indicated by arrows in FIG. 2.
  • the sheet 12 is transported further through the sheet guide cylinder 4 in a known manner by the gripper systems of the sheet guide cylinder, which grip the sheet at the gripper edge.
  • the sheet guide cylinder transfers the sheet to the additional conveying element 9, which transports the sheet while releasing the sheet at the same time and releases it there (FIG. 4).
  • the additional funding 9 is a chain circle 25 with a gripper car track 27 guided and with the chain circle 25th Gripper carriage 26 connected via a coupling 28.
  • the chain of the chain circle is opened to slow down the arc a chain track 29 deviating from the gripper car track 27 and thereby slows down.

Description

Die Erfindung betrifft ein Verfahren und eine Einrichtung zum Transport von Bogen in einer Bogendruckmaschine.The invention relates to a method and a device for Transport of sheets in a sheet printing machine.

In Bogendruckmaschinen wird der oberste Bogen eines Anlegerbogenstapels durch auf den Bogen im hinteren Bereich aufsetzende Hubsauger erfaßt, vertikal transportiert, an ebenfalls im hinteren Bereich aufsetzende Transportsauger übergeben und horizontal in Richtung zu einem Anlegtisch transportiert (DE 363 4659). Der auf dem Anlegtisch aufliegende Bogen wird durch unterhalb desselben angreifende Saugbänder in Verbindung mit oberhalb des Bogens angeordneten Leitelementen erfaßt und zu den Anlegmarken gefördert. Hier erfolgt durch ebenfalls auf den Bogen einwirkende Mittel die Ausrichtung in und quer zur Bogenlaufrichtung (DE 362 2693).
Danach erfolgt durch am Greiferrand des Bogens angreifende Förderelemente - Vorgreifer, Bogentransporttrommeln, Zylinder - der Transport des Bogens durch die Druckmaschine in Richtung eines in Bogenlaufrichtung angeordneten Bogenauslagestapels (DE 440 3884).
Von den Förderelementen wird der Bogen an einen Bogenauslagekettenkreis übergeben und durch auf den Bogen einwirkende Saugwalzen verlangsamt und auf dem Bogenauslagestapel abgelegt (DEU 800 3052).In sheet-fed printing machines, the uppermost sheet of a stack of feed sheets is gripped by lifting suction devices placed on the sheet in the rear area, transported vertically, transferred to transport suction devices also placed in the rear area and transported horizontally in the direction of a feed table (DE 363 4659). The sheet lying on the feed table is detected by suction belts engaging below it in connection with guide elements arranged above the sheet and conveyed to the feed marks. Here, by means also acting on the sheet, the alignment takes place in and across the sheet running direction (DE 362 2693).
Then the conveying of the sheet through the printing machine in the direction of a sheet delivery stack arranged in the sheet running direction (DE 440 3884) takes place by means of conveying elements acting on the gripper edge of the sheet - pre-grippers, sheet transport drums, cylinders.
The sheet is transferred from the conveyor elements to a sheet delivery chain circle and slowed down by suction rollers acting on the sheet and deposited on the sheet delivery stack (DEU 800 3052).

Nachteilig ist dabei, daß der Bogen teilweise durch auf den Bogen im Druckbereich angreifende Elemente transportiert und ausgerichtet wird und deshalb Bogenmarkierungen nicht immer bzw. nur mit hohen Aufwand auszuschließen sind. Des weiteren ist ein sofortiger Zweitdurchlauf durch die Druckmaschine infolge sich ergebender Markierungen durch die auf der frisch bedruckten Fläche des Bogens angreifenden Mittel ausgeschlossen. Letztendlich wirkt sich die räumliche Anordnung von Bogenauslagestapel und Bogenanlagestapel ungünstig auf eine evtl. Weiterverarbeitung (Zweitdurchlauf) aus.The disadvantage here is that the arch partially through on the arch elements attacking in the printing area are transported and aligned is and therefore not always or can only be excluded with great effort. Furthermore is a immediate second pass through the printing machine as a result resulting markings by the on the freshly printed Surface of the arc attacking means excluded. At long last affects the spatial arrangement of sheet delivery stacks and sheet feeder stack unfavorable for possible further processing (Second pass).

Des Weiteren ist es durch die FR 1239 262 bekannt, den zu vereinzelnden Bogen durch Sauger, die auf der Oberfläche des Bogens im Bereich des zu druckenden Bildes angreifen, zu erfassen und zu transportieren.
Nachteilig ist dabei, dass der Bogen im Bereich des gedruckten bzw. zu druckenden Bildes erfaßt und vom Stapel vereinzelt wird, wobei ein sofortiger zweiter Bogenlauf zum Bedrucken der Bogenrückseite, auch auf Grund der gewählten Maschinenkonfiguration, nicht möglich ist.Furthermore, it is known from FR 1239 262 to grasp and transport the sheet to be separated by suction devices which act on the surface of the sheet in the area of the image to be printed.
The disadvantage here is that the sheet is detected in the area of the printed or to be printed image and separated from the stack, an immediate second sheet run for printing on the back of the sheet being impossible, also because of the selected machine configuration.

Aufgabe der Erfindung ist die Schaffung eines Verfahrens und einer Einrichtung zum Transport von Bogen ohne Markierungen auf der Druckfläche durch Förder- und/oder Ausrichtelemente auch bei sofortigem Zweitdurchlauf der Bogen durch die Druckmaschine.The object of the invention is to provide a method and a device for transporting sheets without markings the printing area by conveyor and / or alignment elements also immediate second pass of the sheets through the printing press.

Erfindungsgemäß wird die Aufgabe durch die Patentansprüche gelöst.According to the invention the object is solved by the claims.

Nachfolgend werden die erfinderischen Lösungen an einem Ausführungsbeispiel näher beschrieben.
In den Zeichnungen zeigen

  • Fig. 1 Bogendruckmaschine
  • Fig. 2 Bogenzuführung
  • Fig. 3 Bogenausrichtung
  • Fig. 4 Bogenverlangsamung.
    • The inventive solutions are described in more detail using an exemplary embodiment.
    Show in the drawings
  • Fig. 1 sheet printing machine
  • Fig. 2 sheet feed
  • Fig. 3 sheet alignment
  • Fig. 4 slowing down.

    • Das Verfahren zum Transport von Bogen wird anhand der in Fig. 1 dargestellten Bogendruckmaschine beschrieben.
    Die Druckmaschine enthält einen Anlegerbogenstapel 1, Förderelemente 2, weitere Förderelemente 3, einen als Druckzylinder ausgebildeten Bogenführungszylinder 4, der mit zwei Offsetzylindern 5 zusammenwirkt, wobei jedem Offsetzylinder ein Druckformzylinder 6 mit zwei Farb-/Feuchtwalzen 7 zugeordnet ist, zusätzliche Förderelemente 9 und einen Auslagebogenstapel 11.
    Der Lauf des zu bedruckenden Bogens 12 (Bogenlauf) vom Anlegerbogenstapel 1 bis zum Auslagebogenstapel 11 erfolgt in später genannten Verfahrensschritten, wobei die auf den Bogen beim Bogenlauf einwirkenden Mittel ausschließlich am Greiferrand 13 des Bogens angreifen bzw. auf den Greiferrand einwirken.
    Der Greiferrand 13 erstreckt sich üblicherweise von der Bogenvorderkante in Bogenerstreckungsrichtung gemessen über einen Weg von 3 - 5 mm.
    Der zu bedruckende Bogen wird zuerst vom Anlegerbogenstapel 1 in Richtung des Bogenführungszylinders 4 transportiert, diese Richtung wird als Bogenlaufrichtung 14 bezeichnet. Die Übergabe der Bogen vom Bogenführungszylinder 4 an die nachfolgenden zusätzlichen Förderelemente 9 erfolgt entgegen der Bogenlaufrichtung 14, diese Richtung wird nachfolgend Bogentransportrichtung 15 genannt.
    Durch die Änderung der Bogenbewegungsrichtung - Bogenlaufrichtung in Bogentransportrichtung - ist der Auslagebogenstapel 11 in Bogenlaufrichtung gesehen vor dem Anlegerbogenstapel 1 angeordnet.
    Des weiteren ist der Anlegerbogenstapel und der Auslagebogenstapel in gleicher Stapelebene 30 angeordnet.
    Der vom Anlegerbogenstapel 1 zu dem Bogenführungszylinder 4 geförderte Bogen wird auf Grund dieses Maschinenschemas bezogen auf die Lage des Bogens auf dem Anlegerbogenstapel 1 auf der Bogenrückseite bedruckt und mit der bedruckten Bogenrückseite nach oben auf dem Auslagebogenstapel 11 abgelegt.
    Es besteht die Möglichkeit den Auslagebogenstapel durch Verschieben oder durch Drehen und Verschieben in die Position des Anlegerbogenstapels zu bringen und da beim Bogenlauf keine Elemente an und/oder auf die bedruckte Fläche greifen, d.h. nur am Greiferrand angreifen, sofort den Nachfolgedruck der Bogenvorderseite des Bogens zu beginnen. Das Drehen des Stapels bietet den Vorteil, daß die für einen qualitativ hochwertigen Druck relevante Anlagekante immer, d.h. beim Bedrucken der Bogenvorderseite und beim Bedrucken der Bogenrückseite in Bogenlaufrichtung vorn liegt.     The method for transporting sheets is described using the sheet printing machine shown in FIG. 1.
    The printing press contains a feeder sheet stack 1, conveying elements 2, further conveying elements 3, a sheet guiding cylinder 4 designed as a printing cylinder, which cooperates with two offset cylinders 5, with each offset cylinder being assigned a printing form cylinder 6 with two inking / dampening rollers 7, additional conveying elements 9 and a delivery sheet stack 11.
    The run of the sheet 12 to be printed (sheet run) from the feeder sheet stack 1 to the delivery sheet stack 11 takes place in later-mentioned process steps, the means acting on the sheet during sheet travel acting only on the gripper edge 13 of the sheet or acting on the gripper edge.
    The gripper edge 13 usually extends from the front edge of the sheet in the direction of the sheet extension over a distance of 3-5 mm.
    The sheet to be printed is first transported from the feeder sheet stack 1 in the direction of the sheet guide cylinder 4, this direction is referred to as sheet travel direction 14. The transfer of the sheets from the sheet guide cylinder 4 to the subsequent additional conveying elements 9 takes place counter to the sheet travel direction 14, this direction is referred to below as the sheet transport direction 15.
    By changing the direction of sheet movement - sheet travel direction in the sheet transport direction - the delivery sheet stack 11 is arranged in the sheet travel direction in front of the feeder sheet stack 1.
    Furthermore, the stack of feeder sheets and the stack of delivery sheets are arranged in the same stacking plane 30.
    The sheet conveyed from the feeder sheet stack 1 to the sheet guiding cylinder 4 is printed on the back of the sheet based on this machine scheme, based on the position of the sheet on the feeder sheet stack 1, and is placed on the delivery sheet stack 11 with the printed sheet back upward.
    It is possible to bring the delivery sheet stack into the position of the feeder sheet stack by moving or by turning and moving and since no elements grip and / or touch the printed surface when the sheet is running, i.e. only grip the gripper edge, the subsequent printing of the sheet front side of the sheet immediately kick off. Turning the stack offers the advantage that the contact edge relevant for high-quality printing is always at the front, ie when printing on the front of the sheet and when printing on the back of the sheet in the direction of sheet travel.

    VerfahrensablaufProcess flow

    Der auf dem Anlegerbogenstapel 1 aufliegende Bogen 12 bildet eine erste Ebene 16 und der Bogen 12 weist an seiner Vorderkante den Greiferrand 13 auf (Fig. 2). Ausschließlich an diesem Greiferrand 13 wird der Bogen 12 erfaßt und durch die Druckmaschine bis zum Auslagebogenstapel transportiert.
    Mittels des Förderelementes 2 wird der Bogen 12 an dem Greiferrand 13 erfaßt, auf eine zweite Ebene 17 angehoben und damit vom Anlegerbogenstapel 1 getrennt.
    Die zweite Ebene 17 liegt oberhalb eines an der Vorderkante des Anlegerbogenstapels 1 fest angeordneten Bogenanschlages 18 und ist nahezu identisch mit der Schwingbahn des Förderelementes 2. Das Förderelement 2 führt eine von einem nicht dargestellten Kurventrieb eingeleitete Schwenkbewegung aus, transportiert den Bogen 12 über einen Anlegtisch 19 bis zu den Anlegmarken 10 der Druckmaschine. An den Anlegmarken 10 wird der Bogen 12 von dem Förderelement 2 an einem Freigabepunkt 24 freigegeben.
    Nach einer zweiten Variante (nicht dargestellt) wird die Hub- und Schwenkbewegung von zwei getrennten Elementen ausgeführt. Der Bogen wird dabei von einem Hubförderelement am Greiferrand erfaßt und durch eine Vertikalbewegung vom Anlegerbogenstapel getrennt. Danach übernimmt das Förderlement (2) den Bogen und transportiert ihn zu den Anlegmarken.
    Durch Ausrichtmittel 20 (Fig. 3) wird der Bogen 12 an den quer zur Bogenlaufrichtung 14 angeordneten Anlegmarken 10 und an den in Bogenlaufrichtung 14 seitlich am Anlegtisch 19 angeordneten Seitenmarken 21 ausgerichtet.
    Als Ausrichtmittel 20 wird für jede Ausrichtrichtung ein ausschließlich am Greiferrand 13 auf den auszurichtenden Bogen einwirkendes Impulselement, welches unterhalb des Anlegtisches 19 angeordnet ist und mit einer oberhalb des Bogens angeordneten Rolle 22 zusammenwirkt, verwendet.
    Durch das Impulselement werden intermittierende Impulse wesentlich größerer Impulsfrequenz (200 bis 400 Herz) relativ zur Bogentaktfrequenz (5 Herz) auf den Bogen aufgebracht. Damit wird in der Wirkphase der Impulse eine Bewegungskomponente in Richtung der Marken auf den Bogen unter Schlupf aufgebracht; in den Impulspausen erfolgt eine kraftfreie Entspannung des Bogens. Nach dem Wegschwenken der Anlegmarken 10 (Fig. 2) wird der ausgerichtete Bogen 12 am Greiferrand 13 von einem unterhalb des Anlegtisches 19 angeordneten als Vorgreifer ausgebildeten weiteren Förderelement 3 erfaßt, beschleunigt und an das Greifersystem des Bogenführungszylinders 4 übergeben. Das weitere Förderelement 3 ist vorzugsweise als schwingender Sauger-Vorgreifer ausgebildet und von einem nicht dargestellten Kurventrieb angetrieben.
    Nachdem der Bogen 12 vom Förderelement 2 freigegeben wurde, wird dasselbe auf eine dritte Ebene 23 angehoben und in Richtung Anlegerbogenstapel 1 bewegt. Nachdem das Förderelement 2 die beschriebene Bogenübernahmestellung - Ausgangsstellung; Förderelement befindet sich über dem Greiferrand 13 - erreicht hat, wird dasselbe auf den Anlegerbogenstapel 1 aufgesetzt, d.h. auf die erste Ebene 16 abgesenkt und der Vereinzelungsvorgang beginnt wieder.
    Der Bewegungsablauf des Transportelementes - Hub- und Schwingbewegung- ist durch Pfeile in Fig. 2 gekennzeichnet.
    Der Weitertransport der Bogen 12 durch den Bogenführungszylinder 4 erfolgt in bekannter Art und Weise durch die Greifersysteme des Bogenführungszylinders, die den Bogen am Greiferrand erfassen. Der Bogenführungszylinder übergibt den Bogen an das zusätzliche Förderelement 9, welches den Bogen bei gleichzeitiger Bogenverlangsamung über den Auslagebogenstapel transportiert und dort freigibt (Fig. 4).     The sheet 12 resting on the feeder sheet stack 1 forms a first plane 16 and the sheet 12 has the gripper edge 13 on its front edge (FIG. 2). The sheet 12 is gripped exclusively at this gripper edge 13 and transported through the printing press to the stack of delivery sheets.
    By means of the conveying element 2, the sheet 12 is gripped at the gripper edge 13, raised to a second level 17 and thus separated from the feeder sheet stack 1.
    The second level 17 lies above a sheet stop 18 fixedly arranged on the front edge of the feeder sheet stack 1 and is almost identical to the oscillating path of the conveying element 2. The conveying element 2 carries out a swiveling movement initiated by a cam drive, not shown, transports the sheet 12 via a feed table 19 up to the feed marks 10 of the printing press. At the application marks 10, the sheet 12 is released by the conveying element 2 at a release point 24.
    According to a second variant (not shown), the lifting and swiveling movement is carried out by two separate elements. The sheet is gripped by a lifting conveyor element at the gripper edge and separated from the stack of feed sheets by a vertical movement. The funding element (2) then takes over the sheet and transports it to the feed marks.
    Alignment means 20 (FIG. 3) align the sheet 12 with the application marks 10 arranged transversely to the sheet travel direction 14 and with the side marks 21 arranged laterally on the feed table 19 in the sheet travel direction 14.
    An alignment element 20 for each alignment direction is a pulse element which acts exclusively on the gripper edge 13 on the sheet to be aligned, which is arranged below the feed table 19 and interacts with a roller 22 arranged above the sheet.
    The pulse element applies intermittent pulses of a significantly higher pulse frequency (200 to 400 hearts) relative to the bow clock frequency (5 hearts) on the bow. In this way, in the active phase of the impulses, a movement component is applied to the sheet under slip in the direction of the marks; in the impulse breaks there is a force-free relaxation of the bow. After the application marks 10 (FIG. 2) have been pivoted away, the aligned sheet 12 on the gripper edge 13 is grasped, accelerated and transferred to the gripper system of the sheet guiding cylinder 4 by a further conveying element 3 arranged below the feed table 19 and designed as a pre-gripper. The further conveying element 3 is preferably designed as a vibrating suction gripper and driven by a cam drive, not shown.
    After the sheet 12 has been released by the conveyor element 2, it is raised to a third level 23 and moved in the direction of the stack of feed sheets 1. After the conveying element 2, the sheet transfer position described - starting position; Conveyor element is located above the gripper edge 13 - is reached, the same is placed on the feeder sheet stack 1, ie lowered to the first level 16, and the separation process begins again.
    The movement sequence of the transport element - lifting and swinging movement - is indicated by arrows in FIG. 2.
    The sheet 12 is transported further through the sheet guide cylinder 4 in a known manner by the gripper systems of the sheet guide cylinder, which grip the sheet at the gripper edge. The sheet guide cylinder transfers the sheet to the additional conveying element 9, which transports the sheet while releasing the sheet at the same time and releases it there (FIG. 4).

    Das zusätzliche Fördermittel 9 ist als Kettenkreis 25 mit auf einer Greiferwagenbahn 27 geführten und mit dem Kettenkreis 25 über eine Koppel 28 verbundenen Greiferwagen 26 ausgebildet. Zur Bogenverlangsamung wird die Kette des Kettenkreises auf einer von der Greiferwagenbahn 27 abweichenden Kettenbahn 29 geführt und dadurch verlangsamt. The additional funding 9 is a chain circle 25 with a gripper car track 27 guided and with the chain circle 25th Gripper carriage 26 connected via a coupling 28. The chain of the chain circle is opened to slow down the arc a chain track 29 deviating from the gripper car track 27 and thereby slows down.

    BezugszeichenaufstellungList of reference symbols

    11
    AnlegerbogenstapelStack of feeder sheets
    22nd
    FörderelementConveyor element
    33rd
    weiteres Förderelementanother funding element
    44th
    BogenführungszylinderBow guide cylinder
    55
    OffsetzylinderOffset cylinder
    66
    DruckformzylinderPrinting form cylinder
    77
    7 Farb-/Feuchtwalze7 ink / dampening roller
    8 98th 9
    zusätzliches Förderelementadditional conveyor element
    1010th
    AnlegmarkenLanding marks
    1111
    AuslagebogenstapelDelivery sheet stack
    1212th
    Bogenarc
    1313
    GreiferrandGripper edge
    1414
    BogenlaufrichtungDirection of sheet travel
    1515
    BogentransportrichtungSheet transport direction
    1616
    erste Ebenefirst floor
    1717th
    zweite Ebenesecond level
    1818th
    BoqenanschlaqBoqenanschlaq
    1919th
    AnlegtischFeed table
    2020th
    AusrichtmittelAlignment means
    2121
    SeitenmarkeSide mark
    2222
    Rollerole
    2323
    dritte EbeneThird level
    2424th
    FreigabepunktRelease point
    2525th
    KettenkreisChain circle
    2626
    GreiferwagenGrab car
    2727
    GreiferwagenbahnGrab wagon train
    2828
    KoppelPaddock
    2929
    KettenbahnChain track
    3030th
    StapelebeneStacking level

    Claims (10)

    1. A process for the transport of sheets in a sheet-fed printing press wherein the sheet being separated during the sheet run by at least one transport unit of a feeder pile and fed to the register guides, aligned by alignment devices in the direction of and/or diagonally to the sheet run direction, accelerated by additional transport elements to machine speed, transferred to a sheet-guiding cylinder and transported by it - if necessary by including additional sheet-guiding cylinders or transfer cylinders, respectively - to additional transport elements, and guided and released by the additional transport elements over the delivery pile wherein the sheet (12) to be printed is gripped only on a gripper margin (13) during the sheet run - transport and alignment.
    2. A process for the transport of sheets as claimed in Claim 1 in which the sheet transport direction (15) to the delivery pile (11) is opposite to the sheet run direction (14) to the sheet-guiding cylinder (4), the sheet (12) is delivered - with the printed side upwards - on the delivery pile (11) arranged relative to the sheet run direction (14) on the same level in front of the feeder pile (1) and the delivery pile may be put in the position of the feed pile for the subsequent printing of the rear sheet side
    3. A process for the transport of sheets as claimed in Claim 1 in which the sheet to be fed (12) of the feeder pile (1) is gripped by the transport element (2) on the gripper margin (4), separated by the feeder pile (1) and transported in the direction of the printing press up to the register guides (10) and released there by the transport element (2).
    4. A process for the transport of sheets as claimed in Claim 1 in which the sheet to be fed (12) of the feeder pile (1) is gripped by a lifting element on the gripper margin (4) and separated by the feeder pile (1) and transported by the transport element (2) in the direction of the printing press up to the register guides (10) and released there.
    5. A process for the transport of sheets as claimed in Claim 1 in which the transported and released sheets (12), for alignment on at least one stop (10; 21) arranged in and/or diagonally to the sheet transport unit by intermittent pulses of essentially bigger pulse rates relative to the sheet clock frequency which apply a movement component under slipping on the sheet during the effective phase and which allow a force-free relaxation of the sheet during the pulse breaks, are loaded on the gripper margin (13).
    6. A process for the transport of sheets as claimed in Claim 1 in which the getting of the delivery pile (11) in the position of the feeder pile (1) includes a rotation of the delivery pile (11) through 180°.
    7. A process for the transport of sheets as claimed in Claim 1 in which the speed of the sheet (12) guided on the gripper margin by a gripper carriage (26) of the additional transport element (9) is reduced by separating the path of the driving device designed as a chain circle (25) relative to the gripper carriage path (27).
    8. Device for the transport of sheets
      with a transport element (2) arranged above a feeder pile (1), gripping the sheet to be fed (12) on a gripper margin (13), separating and transporting it over a feed board (19) to the register guides (10),
      with at least one supporting element assigned to the gripper margin (13) of one side of the sheet (12) and an alignment device (20) assigned to the gripper margin of the other side of the sheet, applying intermittent pulses on the sheet,
      with another transport element (3) arranged below the level of the feed board (19) gripping the aligned sheet on the gripper margin (13), accelerating it and transferring it to a sheet-guiding cylinder (4),
      with additional transport elements (9) directly or indirectly arranged behind the sheet-guiding cylinder (4) via transfer cylinders (8) transporting the sheet gripped on the gripper margin (13) over the delivery pile (11) arranged in the direction of the sheet run (14) in front of the feeder pile (1).
    9. A device for the transport of sheets as claimed in Claim 8 in which the feeder pile (1) and the delivery pile (11) arranged in front of the feeder pile relative to the sheet run direction (14) is arranged on a pile level (30) formed by a turntable and a linear transport unit and the delivery pile is assigned to the turntable and the feeder pile to the linear transport unit.
    10. Device for the transport of sheets
      with a lifting transport element arranged above a feeder pile (1), gripping and separating the sheet to be fed (12) on a gripper margin (13) and a transport element (2) transporting via a feed board (19) to the register guides (10),
      with at least one supporting element assigned to the gripper margin (13) of one side of the sheet (12) and an alignment device (20) assigned to the gripper margin of the other side of the sheet, applying intermittent pulses on the sheet,
      with another transport element (3) arranged below the level of the feed board (19) gripping the aligned sheet on the gripper margin (13), accelerating it and transferring it to a sheet-guiding cylinder (4),
      with additional transport elements (9) directly or indirectly arranged behind the sheet-guiding cylinder (4) via transfer cylinders (8) transporting the sheet gripped on the gripper margin (13) over the delivery pile (11) arranged in the direction of the sheet run (14) in front of the feeder pile (1).
    EP97949862A 1996-10-29 1997-10-28 Method and device for conveying sheets Expired - Lifetime EP0939702B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19644946 1996-10-29
    DE19644946A DE19644946A1 (en) 1996-10-29 1996-10-29 Method and device for transporting sheets
    PCT/DE1997/002523 WO1998018628A1 (en) 1996-10-29 1997-10-28 Method and device for conveying sheets

    Publications (2)

    Publication Number Publication Date
    EP0939702A1 EP0939702A1 (en) 1999-09-08
    EP0939702B1 true EP0939702B1 (en) 2001-02-28

    Family

    ID=7810320

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97949862A Expired - Lifetime EP0939702B1 (en) 1996-10-29 1997-10-28 Method and device for conveying sheets

    Country Status (3)

    Country Link
    EP (1) EP0939702B1 (en)
    DE (2) DE19644946A1 (en)
    WO (1) WO1998018628A1 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10129744A1 (en) * 2001-06-20 2003-01-09 Koenig & Bauer Ag Method and devices for aligning an arc

    Family Cites Families (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE1091581B (en) * 1958-11-26 1960-10-27 Wilhelm Ritzerfeld Offset printing machine with a control device for the interaction of the printing elements for line selection
    DE2149151A1 (en) * 1970-10-29 1972-05-10 Polygraph Leipzig Sheet delivery device
    US4236709A (en) * 1979-06-29 1980-12-02 International Business Machines Corporation Cartridge sheet feed attachment
    DE4219116C2 (en) * 1992-06-12 1995-09-28 Roland Man Druckmasch Sheet-fed rotary printing machine for multi-color printing
    DE19612544B4 (en) * 1996-03-29 2004-04-08 Koenig & Bauer Ag Device for aligning sheets
    DE19644950A1 (en) * 1996-05-24 1997-11-27 Kba Planeta Ag Printing front and rear side of paper sheet

    Also Published As

    Publication number Publication date
    DE19644946A1 (en) 1998-04-30
    DE59703079D1 (en) 2001-04-05
    EP0939702A1 (en) 1999-09-08
    WO1998018628A1 (en) 1998-05-07

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