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EP0951997B1 - Système d'encrage à preneur pour une machine à imprimer - Google Patents

Système d'encrage à preneur pour une machine à imprimer Download PDF

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Publication number
EP0951997B1
EP0951997B1 EP99105902A EP99105902A EP0951997B1 EP 0951997 B1 EP0951997 B1 EP 0951997B1 EP 99105902 A EP99105902 A EP 99105902A EP 99105902 A EP99105902 A EP 99105902A EP 0951997 B1 EP0951997 B1 EP 0951997B1
Authority
EP
European Patent Office
Prior art keywords
roller
vibrator
drive
ink fountain
control
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
EP99105902A
Other languages
German (de)
English (en)
Other versions
EP0951997A1 (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 EP0951997A1 publication Critical patent/EP0951997A1/fr
Application granted granted Critical
Publication of EP0951997B1 publication Critical patent/EP0951997B1/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 lifter inking unit for a Sheetfed offset printing machine according to the preamble of claim 1.
  • the ink is transported by an ink fountain roller via a lifter roller, one of the friction rollers arranged downstream of the lifter roller and a number of inking rollers and inking rollers on the one Plate cylinder clamped printing plate.
  • the one between the ink fountain roller and the friction roller reciprocally mounted jack roller has one Drive on through which both the frequency of the movement as well as the respective System times on the ink fountain roller and the friction roller are adjustable.
  • the jack drives also have a jack lock on, by means of the temporary contact of the lifting roller with the ink fountain roller can be stopped.
  • the lifter drive consists of a cam, which runs a role coupled with the storage of the lifting roller, so the Lifter lock can be designed as an actuator, by means of which a complete System of the lifting roller on the ink fountain roller is interrupted during this Phase thus lifts the role from the corresponding contour of the curve.
  • a roller washing device which in particular from a squeegee adjustable on an inking roller with an ink drip tray and there is a spray device assigned to a further roller.
  • the spray device introduces solvent or detergent into the compactor, so that by means of the squeegee, in addition to the ink collecting trough, the dissolved paint from Single drum roller can be removed.
  • the dampening roller is also turned off the plate cylinder.
  • Triggering the previously mentioned processes movement of the lifting roller, starting and stopping of the doctor blade of the roller washing device, application of solution or Detergent and the switching on and off of the ink and dampening rollers
  • a controller This is included in the corresponding Devices arranged actuating means in operative connection.
  • Lifter inking units of the above type are by printing presses of the series R 700 / R900 the MAN Roland Druckmaschinen AG known.
  • DE 43 14 426 C2 describes a control system for a lifter inking unit of a printing press known in which the intermittent movement of the jack roller is generated by a few cam disks that can be rotated relative to one another.
  • the contact time of the lifter roller on the ink fountain roller is to set a desired lift strip (lift strip width) by an assigned Actuator made.
  • a reduction in the lifespan of the lifter roller the ink fountain roller determines the type of cam used at the same time an extension of the lifespan of the lifting roller on the first grater.
  • an inking unit for a printing press in which one Printing form on a printing form cylinder from several ink fountain rollers and Lifter rollers can be supplied with different colors.
  • the inking unit is one Assigned washing device, the lifting rollers depending on the circuit of the Washing device can be actuated or stopped.
  • a speed-adjustable drive of a lifter drive is one Roll rotary printing machine known. Controllable by the speed of the The lifting movement is followed by an exact adjustment of the color dosage depending on the Print speed.
  • a lifter inking unit for a printing press is known from US Pat. No. 3,965,819; at which the movement of the lifting roller takes place through a driven cam disc. The lifting movement can be stopped by a corresponding mechanism.
  • the object of the present invention is therefore to provide an inking unit according to the Preamble of claim 1 while avoiding the above To improve disadvantages so that without major construction Effort especially for the jack roller the quality of a washing process improved and the time for a washing process is noticeably reduced.
  • the lifting roller movement effecting and also triggering the washing process during a activated washing process the contact time of the lifting roller to the first downstream one Ink roller (grater) set to the maximum possible adjustable value becomes.
  • the control also stops the movement the lifter roller to the ink fountain roller, i.e. during the expiring Washing process, the lifter roller has no contact with the ink fountain roller.
  • this can be done by Activate an existing lifter lock by means of the movement the lifter roller is stopped shortly before contact with the ink fountain roller.
  • control according to the invention in a lifter drive with speed-tracking Angle of contact of the lifter roller with respect to the ink fountain roller / grater is used during a washing program by Both the lift lock and the speed-dependent control are activated Overriding the lifter system time in such a way that during the washing process the maximum possible investment time of the lifting roller the grater comes to a standstill.
  • Cam discs of existing lifter drives become the cam discs rotated by the associated actuator so that the jack roller takes the intended maximum possible contact time to the friction roller.
  • FIG.1 shows one equipped with a roller washing device Lifter inking unit of a sheetfed offset printing machine, not shown.
  • An inking unit 4 of a sheet-fed offset printing machine has one Ink fountain roller 1, a lifting roller 2, a friction roller arranged downstream of the lifting roller 3 and other ink rollers.
  • the from the ink fountain roller 1 over the squeegee roller 2 is transported into the inking unit 4 by the inking rollers 8 applied to a printing form stretched around a plate cylinder 12.
  • the lifting roller 2 has a drive 5, through which the lifting roller 2 between the ink fountain roller 1 and the friction roller 3 is movable back and forth.
  • a roller of the inking unit 4 is an ink collecting trough 7 of a roller washing device assigned, which to an the rollers can be turned on and in front of them.
  • Fig. 1 shows the employee State of the ink drip pan 7 with the squeegee attached to it.
  • roller washing devices are known per se and therefore do not require any further details Explanation.
  • a spray device 6 is also arranged, by means of the Solvent or detergent can be applied to one of the rollers.
  • the utilities for the solvent or detergent of the spray device 6 not shown and known per se.
  • the drive 5 of the lifter roller 2, the actuating means of the ink drip pan 7 together with the doctor blade, the spray device 6 of this roller washing device, the application rollers 8 of the inking unit 4 and the dampening roller 10 of the illustrated Dampening units 9 are connected to a controller 11, through which during of the printing company the corresponding functions of the elements mentioned can be triggered.
  • the lifting roller 2 is over by the control 11 the drive 5 in the frequency provided for the corresponding print job movable back and forth between ink fountain roller 1 and friction roller 3.
  • the controller 11 it is caused by the controller 11 that the lifting roller 2 for the respective color transport (color requirement of the subject) provided contact times for Ink fountain roller 1 and the friction roller 3 takes.
  • the controller 11 causes the drive 5 of the jack roller 2 that this no longer makes contact with the ink fountain roller, that is to say in the drive 5 arranged and known lift lock is activated. Furthermore, about the drive 5 of the lifter roller 2 the contact time of the lifter roller 2 with respect to the friction roller 3 chosen such that the jack roller 2 the longest possible investment time to the friction roller 3. Furthermore, the controller 11 effects one activated washing process that the drive 5 from a high to a lowest possible lifting cycle is switched, so the lifting roller 2 as often comes into contact with the friction roller 3 as possible.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (2)

  1. Unité d'encrage à preneur pour une machine d'impression offset à feuilles, comportant un rouleau preneur (2) déplaçable en va-et-vient entre un rouleau d'encrier (1) et un rouleau frotteur (3) disposé en aval, un entraínement (5) associé au rouleau preneur (2), grâce auquel le temps d'application du rouleau preneur (2) contre le rouleau d'encrier et le rouleau frotteur (1, 3) et la fréquence du mouvement du preneur peuvent être modifiés, un dispositif de lavage de rouleaux (6, 7), ainsi qu'une commande (11) associée à l'entraínement (5) du rouleau preneur (2) ainsi qu'au dispositif de lavage de rouleaux (6, 7), grâce à laquelle l'entraínement (5) du rouleau preneur (2) peut être commuté de façon dépendant du dispositif de lavage de rouleaux (6, 7), empêcher le contact du rouleau preneur (2) avec le rouleau d'encrier (1) pouvant être déclenché lorsque le processus de lavage est activé,
    caractérisée en ce que, pour un entraínement (5) réglant le temps d'application du rouleau preneur (2) par rapport au rouleau d'encrier (1) et au rouleau frotteur (3) de façon dépendant de la vitesse d'impression, par la commande (11), lorsque le processus de lavage est activé, le temps d'application le plus grand possible du rouleau preneur (2) contre le rouleau frotteur (3) peut être réglé, en ce que, par la commande (11), la fréquence du déplacement du rouleau preneur (2) peut être réglée à la valeur la plus élevée possible, et en ce que, par la commande (11), après achèvement du processus de lavage, il est effectué la remise à l'état initial de l'entraínement (5) de façon correspondant aux valeurs prévues pour l'impression.
  2. Unité d'encrage à preneur selon la revendication 1,
    caractérisée en ce que l'entraínement (5) du rouleau preneur (2) présente un dispositif de blocage de preneur pouvant être déclenché, lorsque le processus de lavage est activé, par la commande (11) et empêchant le contact du rouleau preneur (2) avec le rouleau d'encrier (1).
EP99105902A 1998-04-22 1999-03-24 Système d'encrage à preneur pour une machine à imprimer Expired - Lifetime EP0951997B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29807276U DE29807276U1 (de) 1998-04-22 1998-04-22 Heberfarbwerk für eine Druckmaschine
DE29807276U 1998-04-22

Publications (2)

Publication Number Publication Date
EP0951997A1 EP0951997A1 (fr) 1999-10-27
EP0951997B1 true EP0951997B1 (fr) 2001-10-04

Family

ID=8056125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105902A Expired - Lifetime EP0951997B1 (fr) 1998-04-22 1999-03-24 Système d'encrage à preneur pour une machine à imprimer

Country Status (3)

Country Link
EP (1) EP0951997B1 (fr)
AT (1) ATE206362T1 (fr)
DE (2) DE29807276U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4958391B2 (ja) * 2004-07-05 2012-06-20 リョービ株式会社 印刷機およびインキ移しローラの制御方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1284844A (en) * 1970-02-20 1972-08-09 Polygraph Leipzig Inking unit for printing machines or proof producing machines
US3965819A (en) * 1975-01-31 1976-06-29 Harris Corporation Ink ductor system
DD276455A1 (de) * 1988-10-31 1990-02-28 Polygraph Leipzig Heberfarbwerk fuer schnellaufende rollen-rotationsdruckmaschinen
DE4314426C2 (de) * 1993-05-03 1996-06-13 Roland Man Druckmasch Heberfarbwerk für eine Druckmaschine

Also Published As

Publication number Publication date
DE29807276U1 (de) 1998-07-02
ATE206362T1 (de) 2001-10-15
EP0951997A1 (fr) 1999-10-27
DE59900291D1 (de) 2001-11-08

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