EP0657285B1 - Système de distribution de clichés pour machines d'impression - Google Patents

Système de distribution de clichés pour machines d'impression Download PDF

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Publication number
EP0657285B1
EP0657285B1 EP94118918A EP94118918A EP0657285B1 EP 0657285 B1 EP0657285 B1 EP 0657285B1 EP 94118918 A EP94118918 A EP 94118918A EP 94118918 A EP94118918 A EP 94118918A EP 0657285 B1 EP0657285 B1 EP 0657285B1
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EP
European Patent Office
Prior art keywords
printing plate
printing
sheet
transfer
flexible
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
EP94118918A
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German (de)
English (en)
Other versions
EP0657285A1 (fr
Inventor
Michael Dr. Koch
Arndt Jentzsch
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.)
KBA Planeta AG
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KBA Planeta AG
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Filing date
Publication date
Application filed by KBA Planeta AG filed Critical KBA Planeta AG
Publication of EP0657285A1 publication Critical patent/EP0657285A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1206—Feeding to or removing from the forme cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/60—Devices for transferring printing plates
    • B41P2227/61—Devices for transferring printing plates using the sheet feed system

Definitions

  • the invention relates to a printing plate conveyor logistics for printing plates conveyed on the sheet path in printing machines.
  • a method and a device for the automatic insertion and / or extraction of flexible printing plates onto / from a printing plate cylinder provided with plate grippers via sheet conveyors provided on the printing press and an intermediate cylinder provided with auxiliary grippers, which forms a transfer path together with the printing plate cylinder, is known ( DE 42 20 011).
  • Conveying logistics for printing plates fed to the printing form cylinder by means of cassettes are also known (EP 435 413 A2). This conveyor logistics cannot be used for printing plates fed to the printing form cylinder via the sheet path.
  • Fig. 1 the machine diagram of a sheet-fed printing machine is shown, which consists of a feed device, four identically constructed printing units DW 1; DW 2; DW 3; DW n and a discharge device 12 exists.
  • the sheet conveying means are designed as sheet guide cylinders or as chain guides, not shown.
  • Sheet guiding cylinders are the cylinders which convey the sheet 18 in normal operation and the printing plate 4 in printing plate conveying operation with the aid of existing gripper systems 5, such as the transfer drum 13, the printing cylinder 14 and, in the case of perfecting and printing machines, the SW drum (not shown).
  • An auxiliary gripper system 7 for printing plate transport is arranged in the intermediate cylinder duct 15 of the intermediate cylinder 6.
  • a rubber blanket is stretched on the intermediate cylinder 6 with generally known tensioning means.
  • the intermediate cylinder 6 corresponds to the printing form cylinder 8, which is designed as a plate cylinder.
  • a printing plate gripper system 9 is arranged in the printing plate cylinder channel 17 for the printing plate front edge and the printing plate rear edge, by which the printing plate 4 fed to the printing plate cylinder 8 is held and tensioned.
  • the printing plate conveyor line is divided into two parts, the sheet path 16 and a number of transfer lines 19.
  • the arc path is the path on which both the printing plates 4 and the sheets 18 are conveyed.
  • the sheet path 16 begins with the feeder 1 and runs over the feed table 3, the pre-gripper 10, the feed drum 11 and the number of printing units DW 1; DW 2; DW 3; DW n corresponding number of printing cylinders 14 and transfer drums 13 to the discharge device 12.
  • the transfer point of the printing plate from the gripper system 5 of the printing cylinder 14 to the auxiliary gripper system 7 of the intermediate cylinder 6 is referred to as the printing plate switch arc path / transfer path and is provided with the reference number 20.
  • the transfer paths 19 are used to designate the distances on which the printing plates 4 are conveyed.
  • Each printing unit DW 1; DW 2; DW 3; A transfer path 19 is assigned to DW n .
  • the transfer path begins at the printing plate switch sheet path / transfer path 20 and leads via the intermediate cylinder 6 to the printing form cylinder 8.
  • the printing plates 4 to be fed are separated by the feeder 1 and via the feed table 3, the pre-gripper 10, the feed drum 11 and the number of printing units DW 1; DW 2; DW 3; DW n corresponding number of printing cylinders 14 and transfer drums 13 (sheet path) and one intermediate cylinder 6 each fed to the printing form cylinder 8 (transfer path).
  • the printing plates 4 to be executed are transferred from the respective printing form cylinder 8 via the intermediate cylinder 6 (transfer path) and one of the number of printing units DW 1; DW 2; DW 3; DW n corresponding number of printing cylinders 14 and transfer drums 13 of the discharge device 12 (sheet path) fed.
  • the conveyor logistics for the printing plates are constructed on cycle lengths, the measure of the cycle length preferably being one revolution of a single-speed shaft.
  • the single-turn shaft for example the printing form cylinder 8, makes one revolution in one work cycle - printing an arc 18.
  • Fig. 2 the cycle length assignment to the printing press is shown schematically.
  • the cycle length of the transfer path 19, which is the same for each printing unit, is designated T T in accordance with FIG.
  • T E denotes the placement of the printing plates to be executed on the stack of the execution device 12.

Landscapes

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

Claims (7)

  1. Logistique de transport de plaques imprimantes pour l'introduction et/ou la sortie de plaques imprimantes flexibles (4) sur/d'un cylindre porte-forme imprimante (8) doté d'au moins un système de pinces de plaque imprimante (9) d'une machine à imprimer constituée d'au moins deux unités d'impression (DW 1; DWn), passant par le parcours de feuilles (16) et les trajets de transfert (19), au moyen de transporteurs de feuilles présents sur la machine à imprimer et comprenant des cylindres guide-feuilles (13 ; 14) dotés de systèmes de pinces (5) ainsi qu'au moyen d'un cylindre intermédiaire (6) doté d'un système de pinces auxiliaires (7) ; cette logistique est caractérisée par le fait que les plaques imprimantes (4) devant être sorties ou amenées sont transportées presque simultanément sur tous les trajets de transfert (19) comme par le fait que la fin de l'introduction des plaques imprimantes flexibles (4) et le dépôt de la dernière plaque imprimante devant être sortie s'effectue presque en même temps.
  2. Logistique de transport de plaques imprimantes conforme à la spécification 1, caractérisée par le fait que la plaque imprimante devant être amenée (4) à la dernière unité d'impression (DWn) démarre, sur le parcours de feuilles (16), avant les plaques imprimantes (4) destinées aux autres unités d'impression (DW 3 ; DW 2 ; DW 1).
  3. Logistique de transport de plaques imprimantes conforme aux spécifications 1 et 2, caractérisée par le fait que les plaques imprimantes (4) démarrant après la première plaque imprimante démarrent entre les unités d'impression, dans l'espace des aiguillages de plaques imprimantes parcours de feuilles/trajet de transfert (20) et atteignent les aiguillages de plaques imprimantes parcours de feuilles/trajet de transfert (20) pratiquement en même temps et dans l'espace d'un cycle.
  4. Logistique de transport de plaques imprimantes conforme à la spécification 2, caractérisée par le fait que la durée de cycle correspond à une rotation d'un arbre à un tour.
  5. Logistique de transport de plaques imprimantes conforme à la spécification 1, caractérisée par le fait que les plaques imprimantes (4) traversent les trajets de transfert (19) à la vitesse de transfert VT et le parcours de feuilles (16) à la vitesse de feuilles VB.
  6. Logistique de transport de plaques imprimantes conforme à la spécification 1, caractérisée par le fait que le moment de départ le plus tôt TStart N de la première plaque imprimante devant être amenée (4) est déterminé selon la relation suivante : T Start N > (T TA + 1) - T 1 x T Start A.
    Figure imgb0007
  7. Logistique de transport de plaques imprimantes conforme à la spécification 1, caractérisée par le fait que le moment de départ le plus tardif TStart de la première plaque imprimante devant être amenée est déterminé selon la relation suivante : T Start = (T E + T 1 + T TA ) - (T N + T TE).
    Figure imgb0008
EP94118918A 1993-12-04 1994-12-01 Système de distribution de clichés pour machines d'impression Expired - Lifetime EP0657285B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4341359 1993-12-04
DE4341359A DE4341359A1 (de) 1993-12-04 1993-12-04 Druckplattenförderlogistik für Druckmaschinen

Publications (2)

Publication Number Publication Date
EP0657285A1 EP0657285A1 (fr) 1995-06-14
EP0657285B1 true EP0657285B1 (fr) 1997-09-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118918A Expired - Lifetime EP0657285B1 (fr) 1993-12-04 1994-12-01 Système de distribution de clichés pour machines d'impression

Country Status (2)

Country Link
EP (1) EP0657285B1 (fr)
DE (2) DE4341359A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8795458B2 (en) 2008-05-27 2014-08-05 Corcel Ip Limited Method of forming single face corrugated board

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4416974C3 (de) * 1994-05-13 2000-01-05 Heidelberger Druckmasch Ag Offsetrotations-Bogendruckmaschine mit mehreren Druckwerken in Reihenbauweise
DE19947230C2 (de) * 1999-10-01 2001-07-26 Koenig & Bauer Ag Verfahren zur Positionierung von Plattenzylindern einer Offsetrotations-Bogendruckmaschine
DE102024106827A1 (de) 2023-04-24 2024-10-24 Heidelberger Druckmaschinen Aktiengesellschaft Plattenlogistikanlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721879A1 (de) * 1987-07-02 1989-01-12 Heidelberger Druckmasch Ag Verfahren und druckmaschine zum herstellen von mehrfarbigen abdrucken
DE4220011C2 (de) * 1992-05-16 1995-09-07 Kba Planeta Ag Verfahren und Einrichtung zum automatischen Ein- und/oder Auszug von flexiblen Druckplatten

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8795458B2 (en) 2008-05-27 2014-08-05 Corcel Ip Limited Method of forming single face corrugated board
US9539790B2 (en) 2008-05-27 2017-01-10 Corcel Ip Limited Method of forming single face corrugated board
US9555599B2 (en) 2008-05-27 2017-01-31 Corcel Ip Limited Method of forming single face corrugated board

Also Published As

Publication number Publication date
EP0657285A1 (fr) 1995-06-14
DE59404024D1 (de) 1997-10-16
DE4341359A1 (de) 1995-06-08

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