EP1878569B1 - Dispositif pour supporter le guidage des feuilles dans des machines d'impression - Google Patents

Dispositif pour supporter le guidage des feuilles dans des machines d'impression Download PDF

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Publication number
EP1878569B1
EP1878569B1 EP20070112412 EP07112412A EP1878569B1 EP 1878569 B1 EP1878569 B1 EP 1878569B1 EP 20070112412 EP20070112412 EP 20070112412 EP 07112412 A EP07112412 A EP 07112412A EP 1878569 B1 EP1878569 B1 EP 1878569B1
Authority
EP
European Patent Office
Prior art keywords
sheet
printing machine
machine according
traction means
turned
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.)
Ceased
Application number
EP20070112412
Other languages
German (de)
English (en)
Other versions
EP1878569A3 (fr
EP1878569A2 (fr
Inventor
Arndt Jentzsch
Gunter Peter
Günter Weisbach
Michael Koch
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
Original Assignee
Koenig and Bauer Albert AG
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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP1878569A2 publication Critical patent/EP1878569A2/fr
Publication of EP1878569A3 publication Critical patent/EP1878569A3/fr
Application granted granted Critical
Publication of EP1878569B1 publication Critical patent/EP1878569B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine
    • B41F21/108—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine with pneumatic means

Definitions

  • the invention relates to a printing machine with a device for supporting the sheet guide wherein the printing press can be used either in straight printing or perfecting and the bow can be turned in the perfecting method according to the principle of trailing edge application, said on a cylinder with grippers guided sheet is detected and continued by a sheet transfer system of a turning drum.
  • the feed level e.g. the surface of the storage drum (three-drum turn) or the surface of the printing cylinder (single-drum turn) or the surface of a Leitrakel (also single-drum turn)
  • the following sheet is through the storage drum, impression cylinder or paradox of the Leitrakel itself and the one-stroke advancing, from the reversal of motion opposite moving turn arc brought by the inertia effect and aerodynamic forces of the rotating drum body and the paradox on the Leitrakel.
  • Another reason for the sheet encounter in the feed level is the use of air cushions against the greasing on the underside of the arch. The force acting in the direction of the turning arc of the air cushion can lead to pressing the turning arc to the next in the feed plane and thus for greasing between the two sheets.
  • a sheet guiding device in which the subsequent and the withdrawing sheet are separated from each other by mechanical means by the withdrawing sheet is pressed after its reversal by a rake from the feed plane of the Leitrakel in the effective range of the baffle.
  • the withdrawing sheet is directed at the leading edge, which has now become the trailing edge of the sheet, by means of a rake.
  • the length of the rake is limited by the condition that the foremost point of the rake must have taken the starting position behind the feeding plane of the sheet before the arrival of the subsequent sheet. Again, the leadership of the subtending bow is not enough to displace the volume of air from the forming bow wave and avoid contact of the turned with the following arc safely.
  • the object is achieved by a device having the features of the first claim.
  • the invention has the advantage that the turned sheet is pressed out of the path of the following sheet in the direction of the sheet withdrawal plane by the sheet stripping device.
  • a suction device is provided on the sheet wiper, with which the turned arc is temporarily sucked. This streamlines this bow.
  • the volume of air under the sheet to be turned is displaced, so that the formation of a bow wave is largely avoided.
  • the streamed away from the Leitrakel, streamlined bow is kept away from the action of the blow-suction air from the Leitrakler.
  • FIG. 1 At the one-drum turn after Fig. 1
  • a pressure cylinder 4 which in turn is a sheet guiding cylinder 5 downstream.
  • the direction of rotation of the cylinders is indicated by directional arrows.
  • the Leitrakel 6 is disposed over the width of the printing cylinder 4 and it is associated with the front part at a small distance from the periphery of the printing cylinder 4.
  • a baffle 7 is provided below the Leitrakel 6 at a distance from this. The baffle 7 has holes through which the turned-off sheet can be pneumatically acted upon.
  • the Bogenabstreif driving 8 consists of a circulating belt 9 on which a wedge-shaped Bogenabstreifelement 10 is arranged.
  • the drive of the belt 9 is not shown.
  • Fig. 4 is a further embodiment of the variant of the assignment of Bogenabstreifimplantation 10 shown to a plurality of rotating shafts, which are driven by a traction means 9.
  • the Bogenabstreifimplantation 10 are connected in parallel here via a parallel crank mechanism 18 with two shafts.
  • the bow to be turned 12 is applied in the operating mode perfecting on the printing cylinder 4 of the recto printing. Thereafter, the sheet 12 to be reversed passes through the tangent point of the printing cylinder 4 and turning drum 1, where the sheet 12 to be reversed sucked in the rear of the suction system 2 of the turning drum, passed under the periphery of the turning drum 1, passed to the gripper system 3 and the following, not shown Pressure cylinder turned is supplied, where the counterpressure takes place.
  • the sheet 12 to be turned is held by the gripper 11 of the printing cylinder 4.
  • Fig.1 opens the gripper 11 shortly before reaching the Leitrakel 6, the sheet to be turned 12 is released with its leading edge from the printing cylinder 4 in a known manner and guided along the Leitrakel 6.
  • the system of the sheet 12 to be turned on the Leitrakel 6 can be supported by emerging from blowing nozzles, between Leitrakel 6 and 12 to be turned arc blown air.
  • the wedge-shaped sheet scraping element 10 pivots in its orbit in front of the leading edge of the following sheet 12 to be deflected into the doctor blade plane and is transported in the sheet conveying direction with sheet speed to the sheet reversal point and constantly presses the turned arc 13 from the area of the Leitrakel 6 in the effective range of the baffle. 7

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Discharge By Other Means (AREA)

Claims (11)

  1. Machine d'impression comportant une installation pour assister le guidage des feuilles,
    - la machine s'utilisant au choix en impression recto ou en impression recto/verso et appliquant un procédé d'impression de feuilles recto/verso selon le principe du retournement du bord arrière,
    - la feuille (12) guidée sur un cylindre (4) avec pinces (11) et qui doit être retournée, étant prise au niveau de son bord arrière par le système de transfert de feuilles (2, 3) d'un tambour de retournement (1) pour être ensuite transférée et le bord avant de la feuille (12) à retourner étant guidé sur une racle de guidage (6) équipée d'un dispositif de raclage de feuilles (8),
    machine d'impression caractérisée en ce que
    le dispositif de raclage de feuilles (8) comporte au moins un élément racleur de feuilles (10) monté mobile dans la direction de circulation des feuilles de façon à être en avance du bord avant de la feuille (12) à retourner, située derrière et guidée le long de la racle de guidage, cet élément raclant la feuille précédente (12, 13) de la périphérie de la racle de guidage (6).
  2. Machine d'impression selon la revendication 1,
    caractérisée en ce que
    l'installation de raclage de feuilles (8) se compose d'au moins un moyen de traction (9) passant sur au moins deux rouleaux et d'au moins un élément de raclage de feuilles (10) associé au moyen de traction (9), et qui dépasse au moins de temps en temps de la surface de guidage de la racle de guidage (6).
  3. Machine d'impression selon la revendication 2,
    caractérisée en ce que
    l'élément de raclage de feuilles (10) est en forme de coin.
  4. Machine d'impression selon la revendication 2,
    caractérisée en ce que
    l'élément de raclage de feuille (10) est monté sur le moyen de traction (9) et il est mobile dans la direction de transfert des feuilles.
  5. Machine d'impression selon la revendication 2,
    caractérisée en ce que
    l'installation de raclage de feuilles (8) se compose d'arbres écartés l'un de l'autre portant des éléments racleurs de feuilles (10) montés à rotation et les arbres sont entraînés par le moyen de traction (9).
  6. Machine d'impression selon la revendication 5,
    caractérisée en ce que
    l'élément de raclage de feuilles (10) est un segment de disque rotatif (14).
  7. Machine d'impression selon la revendication 2,
    caractérisée en ce que
    le moyen de traction (9) est une chaîne entraînée.
  8. Machine d'impression selon la revendication 2,
    caractérisée en ce que
    le moyen de traction (9) est une bande entraînée.
  9. Machine d'impression selon la revendication 2,
    caractérisée en ce que
    le moyen de traction (9) est déplacé à une vitesse adaptée au mouvement des feuilles.
  10. Machine d'impression selon la revendication 1,
    caractérisée en ce que
    l'élément de raclage de feuilles (10) comporte une installation d'aspiration (17).
  11. Machine d'impression selon la revendication 10,
    caractérisée en ce que
    l'installation d'aspiration (17) reçoit de manière cadencée de l'air d'aspiration.
EP20070112412 2006-07-15 2007-07-13 Dispositif pour supporter le guidage des feuilles dans des machines d'impression Ceased EP1878569B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610032922 DE102006032922B3 (de) 2006-07-15 2006-07-15 Einrichtung zur Unterstützung der Bogenführung in Druckmaschinen

Publications (3)

Publication Number Publication Date
EP1878569A2 EP1878569A2 (fr) 2008-01-16
EP1878569A3 EP1878569A3 (fr) 2008-09-17
EP1878569B1 true EP1878569B1 (fr) 2010-10-13

Family

ID=38438645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070112412 Ceased EP1878569B1 (fr) 2006-07-15 2007-07-13 Dispositif pour supporter le guidage des feuilles dans des machines d'impression

Country Status (2)

Country Link
EP (1) EP1878569B1 (fr)
DE (2) DE102006032922B3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008051093B4 (de) 2008-10-09 2021-10-21 Heidelberger Druckmaschinen Ag Vorrichtung zum Umstülpen eines Bogens um eine Querachse während eines Förderns zwischen zwei Druckwerken einer Druckmaschine
DE102015209689B4 (de) 2014-06-18 2021-03-25 Koenig & Bauer Ag Wendevorrichtung für eine bogenverarbeitende Maschine und Verfahren zum Wenden von Bogen
DE102015209690C5 (de) 2014-06-18 2025-08-21 Koenig & Bauer Ag Wendevorrichtung und Verfahren zum Wenden von Bogen
DE102015209687B4 (de) 2014-06-18 2020-07-02 Koenig & Bauer Ag Wendevorrichtung und Verfahren zum Wenden von Bogen
DE102015209700B4 (de) 2015-05-27 2018-06-07 Koenig & Bauer Ag Bogenführungszylinder und Verfahren zum Fördern eines Bogens in einer bogenverarbeitenden Maschine
DE102015209699B4 (de) * 2015-05-27 2018-06-07 Koenig & Bauer Ag Wendevorrichtung und Verfahren zum Wenden eines Bogens mit einem Bogenführungszylinder und einer an den Bogenführungszylinder angestellten Ablöseeinrichtung
DE102015209697B4 (de) 2015-05-27 2018-04-05 Koenig & Bauer Ag Bogenführungszylinder und Verfahren zum Fördern eines Bogens in einer bogenverarbeitenden Maschine
DE102018215386A1 (de) 2017-10-06 2019-04-11 Heidelberger Druckmaschinen Ag Druckmaschine mit einer Wendeeinrichtung und einer Leiteinrichtung
DE102024103991A1 (de) * 2024-02-13 2025-08-14 Koenig & Bauer Ag Bogentransporttrommel und Verfahren zum Betreiben einer bogenverarbeitenden Maschine mit einer Bogentransporttrommel

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD101336A1 (fr) * 1972-12-27 1973-11-12
DE2724621A1 (de) * 1977-06-01 1978-12-14 Maschf Augsburg Nuernberg Ag Bogenwendevorrichtung einer bogen- rotations-druckmaschine in reihenbauart
DE4030070C2 (de) * 1990-09-22 1997-04-17 Kba Planeta Ag Bogenspeichereinheit an Rotationsdruckmaschinen
DE4210327A1 (de) * 1992-03-30 1993-10-07 Koenig & Bauer Ag Bogenwendeeinrichtung in einer Rotationsdruckmaschine
DE4424971C2 (de) * 1994-07-15 2002-06-13 Koenig & Bauer Ag Leiteinrichtung an Bogenrotationsdruckmaschinen
DE4424977C2 (de) * 1994-07-15 2000-08-10 Koenig & Bauer Ag Bogenabweiser
DE9411462U1 (de) * 1994-07-15 1994-09-08 Kba-Planeta Ag, 01445 Radebeul Blaseinrichtung zur Unterstützung der Bogenführung
DE4424968C2 (de) * 1994-07-15 1997-12-11 Kba Planeta Ag Verfahren und Einrichtung zur Bogenführung und Bogenleitung beim Wendevorgang
DE4424970C2 (de) * 1994-07-15 1997-12-11 Kba Planeta Ag Pneumatisch arbeitende Leiteinrichtung zum Wenden von Bogen
DE4424972C2 (de) * 1994-07-15 1998-03-19 Kba Planeta Ag Einrichtung an bogenführenden Zylindern
DE19940214B4 (de) * 1998-03-28 2014-03-06 Koenig & Bauer Aktiengesellschaft Leitrakel zur Bogenführung in Druckmaschinen
DE10152875B4 (de) * 2000-11-21 2014-08-07 Heidelberger Druckmaschinen Ag Wendeeinrichtung mit Speicher für flächiges Material

Also Published As

Publication number Publication date
EP1878569A3 (fr) 2008-09-17
DE102006032922B3 (de) 2007-09-27
DE502007005317D1 (de) 2010-11-25
EP1878569A2 (fr) 2008-01-16

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