EP0951996B1 - Contrôle du rouleau preneur d'une machine à imprimer - Google Patents

Contrôle du rouleau preneur d'une machine à imprimer Download PDF

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Publication number
EP0951996B1
EP0951996B1 EP99106989A EP99106989A EP0951996B1 EP 0951996 B1 EP0951996 B1 EP 0951996B1 EP 99106989 A EP99106989 A EP 99106989A EP 99106989 A EP99106989 A EP 99106989A EP 0951996 B1 EP0951996 B1 EP 0951996B1
Authority
EP
European Patent Office
Prior art keywords
roller
control
drive
ductor
ink
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
EP99106989A
Other languages
German (de)
English (en)
Other versions
EP0951996A2 (fr
EP0951996A3 (fr
Inventor
Joachim Müller
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0951996A2 publication Critical patent/EP0951996A2/fr
Publication of EP0951996A3 publication Critical patent/EP0951996A3/fr
Application granted granted Critical
Publication of EP0951996B1 publication Critical patent/EP0951996B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/14—Applications of messenger or other moving transfer rollers

Definitions

  • the invention relates to a control for a lifter inking unit of a printing press, in particular sheet-fed offset printing press according to the preamble of claim 1.
  • the ink to be printed is fed by an ink fountain roller fed to the rollers of an inking unit via a jack roller and via inking rollers on the printing form mounted on a plate cylinder applied.
  • the lifter roller is in particular between an ink fountain roller and one trained as Relber roller ink roller back and forth. This movement is assigned to the bearing of the lifting roller Drive generated.
  • To match the color to be fed to the printing form To be able to adapt is both the frequency of the lifting movement (lifting stroke) and also the width of the lifting strip, i.e. the amount of through by the ink fountain roller the color to be removed from the siphon roller (length of the color strip) is adjustable.
  • DE 44 36 953 C1 describes such a method for producing a Ink layer thickness distribution on inking unit rollers of an inking unit of a printing press known.
  • this method during a first number of Machine revolutions through the ink metering elements on the ink fountain roller a quantity of color introduced into the inking unit, this quantity of color the so-called Basic color quantity of the next order corresponds. Then during a second number of machine revolutions for the coming one Print order determined metering profile set on the ink fountain roller until then the actual printing with releasing the sheet run and starting the Printing unit cylinder takes place.
  • the lift strip width set to a possible maximum value, i.e.
  • the lifter roller takes the largest possible amount of ink from the ink fountain roller and transfers this on the friction roller arranged after the lifting roller. It is also provided that that the printing machine is run up to the highest possible speed is (if possible the maximum speed of the machine), so that the corresponding Number of machine revolutions in the shortest possible time is going through.
  • ink usually runs into the inking unit at the beginning of the shift, i.e. with cold machine. Then the machine will run at maximum speed driven, this causes increased wear in the bearings of cylinders, rollers and other moving machine parts. To do that reducing the resulting increased risk of machine damage, Accordingly, the running-in process when the machine is cold must always be reduced Machine speed.
  • the printing machine has a lifter inking unit with an automatically changing depending on the machine speed Width of the squeegee strip, this in turn requires that the opposite accordingly the maximum speed reduced the running-in speed narrower lift strip width comes to adjustment, which is the running-in process additionally extended.
  • a lifter inking unit with depending on the machine speed tracking strip width is from DE 43 14th 426 C2 known.
  • the object of the present invention is therefore to provide a control for a lifter inking unit a printing press according to the preamble of claim 1 expand so that a while avoiding the disadvantages mentioned above the best possible reduction in the duration of the running-in process can be achieved.
  • the control when selected Run-in process via the drive assigned to the lifter roller independently of the machine speed intended for the running-in process (Machine speed) the largest possible width of the lifting strip (processing lifting roller on the ink fountain roller) for adjustment.
  • Machine speed machine speed
  • the control according to the invention resetting the lift strip width from that intended for the inlet Maximum value at that provided for the current speed (machine speed) Value.
  • the drive for the lifting roller consists of a pair rotatable relative to one another Cam discs, which are generated via an assigned actuator the desired lift strip widths depending on the machine speed are traversed, so these cams by the invention Do the control with the preselected run-in process, see above that the siphon roller takes the greatest possible contact time with the ink fountain roller. After the running-in process has been completed by the appropriate Signal generation on the part of the control system according to the invention Reset to that provided for the current machine speed Value of the lift strip.
  • the control of the lifter inking unit according to the invention can be done with the control center the printing press in signal connection, so that the control room the machine speed intended for the running-in process can be preselected.
  • the control then takes place after selection of the running-in process and after input the desired inlet speed, the automatic setting of the maximum Lifter strip during the entire running-in process, so that the over Ink fountain roller provided color as quickly as possible to the other rollers of the Inking unit can be fed.
  • An inking unit 4 has an ink fountain roller 1, a lifting roller 2, one of the lifting roller 2 downstream friction roller 3 and further rollers.
  • the over the Ink fountain roller 1 and remotely controllable dosing ink fountain 14 color supplied to the inking unit 4 can be switched on and off Ink application rollers 5 applied to the printing plate stretched around the plate cylinder 8.
  • the figure also shows a dampening unit 6 with an on and off stored dampening roller 7.
  • the back and forth between the ink fountain roller 1 and the friction roller 3 Lifter roller 2 has a drive 13, which with the invention Controller 12 is in signal connection.
  • the lifter roller can be driven by the drive 13 2 in terms of both frequency and contact time (investment time) can be adjusted with respect to ink fountain roller 1 and friction roller 3.
  • the control 12 is also operatively connected to the drive 11 of the printing press, so that 12 machine speed-dependent signals can be generated by the controller are so that during the printing operation the jack roller 2 one of the machine speed (Print speed) dependent color strips (Lift strip width) decreases from the ink fountain roller 1 and this amount of ink passes to the friction roller 3 and the other rollers of the inking unit 4.
  • the controller 12 is also available with the actuating means (not shown) and parking the inking rollers 5, the dampening roller 7 and that Pressure switching of the blanket cylinder 9 effecting gear in operative connection.
  • a corresponding control signal is sent to the drive 11 of the printing press, so that the printing unit at the speed intended for the running-in process is driven.
  • the control 12 corresponding control commands to those interacting with the ink fountain 14 controlled controllable dosing elements, so that on the ink fountain roller 1 the metering profile provided for the inlet comes to the setting.
  • the controller 12 also generates corresponding control commands for the drive 13 of the jack roller 2 so that the largest possible jack strip width (contact time Lifter roller 2 on ink fountain roller 1) comes to the setting.
  • the controller 12 becomes dependent on the run-in process otherwise during printing the machine speed caused tracking of the lifting speed canceled and the lift strip width via the drive 13 to the maximum value booted.
  • the lift strip width is via the drive 13 of the jack roller 2 back to the one intended for the current machine speed Value shut down. You can then switch accordingly the inking rollers 5, the dampening roller 7 and starting the blanket cylinder 9 on the plate cylinder 8 thus the impression cylinder 10 the first and the other sheets are printed.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Claims (2)

  1. Commande pour une unité d'encrage à preneur d'une machine d'impression, en particulier une machine d'impression offset à feuilles, comportant un rouleau preneur déplaçable en va-et-vient, par l'intermédiaire d'un entraínement, entre un rouleau d'encrier et un rouleau d'unité d'encrage réalisé en particulier comme rouleau distributeur, le temps de contact du rouleau preneur relativement au rouleau d'encrier pouvant être avantageusement commandé de façon dépendant de la vitesse de machine comme largeur de bande de preneur et un processus d'introduction d'encre pouvant être déclenché par la commande lorsque le rouleau preneur tourne, les rouleaux d'application d'encre sont arrêtés par le cylindre porte-plaque et/ou le cylindre porte-blanchet est arrêté par le cylindre porte-plaque et/ou le cylindre de contre-pression,
    caractérisée en ce que, par la commande (12), pour une introduction d'encre sélectionnée, le rouleau preneur (2), par l'intermédiaire de l'entraínement (13), de façon indépendante de la vitesse actuelle de machine, peut être réglé à la plus grande valeur possible de la largeur de bande de preneur, et en ce que, après achèvement de l'introduction d'encre, la largeur de bande de preneur peut être ramenée à la valeur prévue pour la vitesse actuelle de machine par la commande (12) par l'intermédiaire de l'entraínement (13).
  2. Commande selon la revendication 1,
    caractérisée en ce que la commande (12) est en liaison active avec l'entraínement (11) de la machine d'impression et des vitesses de rotation pouvant être présélectionnées pour le processus d'introduction peuvent être prédéfinies.
EP99106989A 1998-04-22 1999-04-09 Contrôle du rouleau preneur d'une machine à imprimer Expired - Lifetime EP0951996B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29807277U 1998-04-22
DE29807277U DE29807277U1 (de) 1998-04-22 1998-04-22 Steuerung für ein Heberfarbwerk einer Druckmaschine

Publications (3)

Publication Number Publication Date
EP0951996A2 EP0951996A2 (fr) 1999-10-27
EP0951996A3 EP0951996A3 (fr) 2000-05-24
EP0951996B1 true EP0951996B1 (fr) 2003-08-06

Family

ID=8056126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99106989A Expired - Lifetime EP0951996B1 (fr) 1998-04-22 1999-04-09 Contrôle du rouleau preneur d'une machine à imprimer

Country Status (3)

Country Link
EP (1) EP0951996B1 (fr)
AT (1) ATE246602T1 (fr)
DE (2) DE29807277U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005009112A1 (de) * 2005-03-01 2006-09-07 Koenig & Bauer Ag Farbwerk und Verfahren zum Betreiben des Farbwerkes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10225244B4 (de) * 2002-06-07 2016-02-04 Koenig & Bauer Ag Verfahren zum Anfahren des Fortdrucks nach einer Druckunterbrechung
DE102005031317B4 (de) * 2005-07-05 2017-05-24 manroland sheetfed GmbH Verfahren zur Aufrechterhaltung einer Farbverteilung im Farbwerk von Druckmaschinen
DE102012218423B4 (de) * 2012-10-10 2022-02-24 Koenig & Bauer Ag Farbwerk eines Druckwerks, Druckwerk sowie Verfahren zum Betreiben eines Farbwerks
DE102015101497A1 (de) * 2014-08-09 2016-02-11 manroland sheetfed GmbH Hochdynamische Farbdichteregelung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193926A (en) * 1986-07-24 1988-02-24 Ratby Eng Co Ltd Inking system in a printing machine
DE4314426C2 (de) * 1993-05-03 1996-06-13 Roland Man Druckmasch Heberfarbwerk für eine Druckmaschine
DE4436953C1 (de) * 1994-10-15 1996-05-15 Roland Man Druckmasch Verfahren zur Erzeugung einer Farbschichtdickenverteilung auf Farbwerkwalzen eines Farbwerkes einer Druckmaschine
DE19517154B4 (de) * 1995-05-10 2009-04-16 Rolf Dr.-Ing. Bosse Verfahren zur Gewinnung von maschinenabhängigen Vorgabewerten für das Laden eines Walzenfarbwerks vor Druckbeginn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005009112A1 (de) * 2005-03-01 2006-09-07 Koenig & Bauer Ag Farbwerk und Verfahren zum Betreiben des Farbwerkes

Also Published As

Publication number Publication date
EP0951996A2 (fr) 1999-10-27
DE59906474D1 (de) 2003-09-11
EP0951996A3 (fr) 2000-05-24
DE29807277U1 (de) 1998-07-02
ATE246602T1 (de) 2003-08-15

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