EP0131186A2 - Dispositif de dosage de l'encre dans les machines à imprimer offset - Google Patents

Dispositif de dosage de l'encre dans les machines à imprimer offset Download PDF

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Publication number
EP0131186A2
EP0131186A2 EP84107144A EP84107144A EP0131186A2 EP 0131186 A2 EP0131186 A2 EP 0131186A2 EP 84107144 A EP84107144 A EP 84107144A EP 84107144 A EP84107144 A EP 84107144A EP 0131186 A2 EP0131186 A2 EP 0131186A2
Authority
EP
European Patent Office
Prior art keywords
pressure
ink
cylinder
pressure medium
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.)
Granted
Application number
EP84107144A
Other languages
German (de)
English (en)
Other versions
EP0131186B1 (fr
EP0131186A3 (en
Inventor
Hugo Rambausek
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0131186A2 publication Critical patent/EP0131186A2/fr
Publication of EP0131186A3 publication Critical patent/EP0131186A3/de
Application granted granted Critical
Publication of EP0131186B1 publication Critical patent/EP0131186B1/fr
Expired 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
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices

Definitions

  • the invention relates to a device for dosing the paint according to the preamble of claim 1 as an addition to P 32 17 569.8-27.
  • an ink metering device which guarantees an absolutely uniform and reproducible ink supply in offset printing machines and, with little effort, an exact regulation of the inking of the plate cylinder.
  • This makes it possible to feed a uniformly thick ink film to the printing form or to achieve a zonally different ink supply across the width of the printing form.
  • the amount of ink supplied corresponds to the different consumption per ink zone during the entire printing period, but not to the amount of time required at different times within a printing period depending on the subject of the printed product.
  • the object of the invention is to provide a device for metering the ink, in which the circumferential direction of the plate cylinder also corresponds to the required amount of ink over the entire width or a different color profile is applied zone by zone, so that the color layer thickness is modulated in the circumferential direction, ie that the color layer can be varied not only in width but also in the circumferential direction according to the need.
  • the main advantage of the invention is the fact that it is possible with the given extremely short ink paths to the plate cylinder by using one or two application rollers, even in the circumferential direction to perform a modulation of the ink layer thickness of the plate cylinder, which in accordance with the ink requirement of the printed image delivers exactly the amount of ink that is required in the respective area.
  • Figure 1 shows schematically an offset printing machine, in which the sheets to be printed are fed in a known manner via a feeder 1 to a printing cylinder 2, which cooperates with a blanket cylinder 3 and a plate cylinder 4.
  • the print image is thus from the plate cylinder 4 via the blanket cylinder 3 to the sheet to be printed on Transfer printing cylinder 2.
  • the sheet is fed from a chain delivery 5 to a delivery stack 6. For printing on a paper web, this would be passed between the impression cylinder 2 and the blanket cylinder 3 in a known manner.
  • the plate cylinder 4 is assigned an inking roller 7 which has an elastic jacket surface and whose diameter corresponds to the plate cylinder diameter.
  • the inking roller 7 receives the ink from an ink cylinder 8, which is provided with an outer surface made of rigid material, e.g. Metal, is executed.
  • a dampening unit 9 transfers the dampening solution via the two application rollers 10 and 11 to the ink cylinder 8, the last application roller 11, viewed in the direction of rotation of the ink cylinder, being pivotably mounted on the plate cylinder 4 for faster moistening (shown in dashed lines).
  • the ink cylinder 8 is assigned a metering body 12, which is supported on a crossmember 13, which is fastened to the side frames, via a ball joint 14 and via an adjusting element in the form of a pressure medium cylinder 15.
  • the ink supply 16 is located in the gap between the ink cylinder 8 and the metering body 12.
  • sensors 17 are provided which measure the layer thickness of the ink on the ink cylinder 8.
  • a further cross member 18 is provided, on which a support body 19 is supported.
  • Pressure medium cylinders 20 and ball joints 21, which exert the same pressure as the opposite pressure medium cylinders 15, are also provided between the support body 19 and the cross member 18, so that the pressure forces acting on the ink cylinder 8 cancel each other out. This prevents the same from bending.
  • the ink cylinder 8 has a chamber 22 in its interior, which can be filled with a cooling liquid.
  • FIG. 2 shows a paint metering device according to FIG. 1 in partial longitudinal section, with the ink cylinder 8 being supported by roller bearings 23 in the machine sides stand 24.25.
  • the jacket 26 of the ink cylinder 8 bears on the end faces against sealing jaws 27 for the paint. These in turn are attached to the trusses 13 and 18.
  • the chamber 22 is connected via the bore 28 to a coolant circuit, not shown.
  • the pressure medium cylinders 15 are connected via a pressure medium line 29 to a pressure reducing valve 30 which is connected to a hydraulic unit 32 via a further line 31.
  • the hydraulic unit 32 generates a pressure as high as is required for the maximum demands on the metering body 12.
  • Via the pressure reducing valve 30, the pressure is reduced as far as is necessary for the respective need. This reduction can be done uniformly or differently across zones across the machine width.
  • a plunger 33 the excitation of which is controlled by an amplifier 34 from a signal recorded on the disc 37 or an endless tape.
  • the disc contains information about the amount of color required for the subject to be printed.
  • the signal on the disk 37 can be predetermined after a subjective assessment of the printing form or determined by a scanner.
  • the con - trol of the pressure reducing valve 30 can be done in both analog and digital.
  • other control elements for the pressure change are also possible. For example, changing the spring preload of the pressure reducing valve via a control disk that rotates at machine speed and is assigned to the subject is an example of a simple mechanical solution.
  • a paper web 35 is shown below in FIG. 4, which has imprints 36 in close succession.
  • the paper web 35 moves to the right, and the prints are each provided on the right side with a hatched area, which is intended to indicate increased ink consumption.
  • the prints in the running direction of the web are shown on the abscissa and the amount of ink required in each case on the ordinate.
  • the ink supply is reduced and increased in each case in the hatched area.
  • the amount of ink supplied can be regulated in this direction in accordance with the respective consumption.
  • the condition for this ink metering is that there is a short ink path to the plate cylinder and that the inking roller corresponds to the plate cylinder diameter, so that the color relief is always generated at the same location on the outer surface.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP84107144A 1983-07-09 1984-06-22 Dispositif de dosage de l'encre dans les machines à imprimer offset Expired EP0131186B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3324893A DE3324893C1 (de) 1983-07-09 1983-07-09 Vorrichtung zum Dosieren der Farbe bei Offsetdruckmaschinen
DE3324893 1983-07-09

Publications (3)

Publication Number Publication Date
EP0131186A2 true EP0131186A2 (fr) 1985-01-16
EP0131186A3 EP0131186A3 (en) 1986-12-30
EP0131186B1 EP0131186B1 (fr) 1989-01-04

Family

ID=6203638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107144A Expired EP0131186B1 (fr) 1983-07-09 1984-06-22 Dispositif de dosage de l'encre dans les machines à imprimer offset

Country Status (5)

Country Link
US (1) US5040459A (fr)
EP (1) EP0131186B1 (fr)
JP (1) JPS6038158A (fr)
DE (1) DE3324893C1 (fr)
ES (1) ES533374A0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242648A3 (fr) * 1986-04-24 1989-04-26 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif d'encrage pour une rotative d'impression planographique

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3613472A1 (de) * 1986-04-22 1987-10-29 Masayuki Izume Farbzufuehreinrichtung fuer eine druckmaschine
DE19617746B4 (de) * 1996-05-03 2005-05-25 Heidelberger Druckmaschinen Ag Farbwerk für eine Druckmaschine
US5738724A (en) * 1996-08-06 1998-04-14 Westvaco Corporation Actuator assembly for coater blade load adjustment
DE19826810A1 (de) * 1998-06-16 1999-12-23 Koenig & Bauer Ag Verfahren und Einrichtung zur Farbzufuhr
DE10052011A1 (de) * 2000-10-20 2002-04-25 Heidelberger Druckmasch Ag Farbwerk in einer Druckmaschine
DE10159698B4 (de) * 2000-12-14 2015-03-26 Heidelberger Druckmaschinen Ag Verfahren zum Einstellen einer Farbmenge, die einem Druckzylinder einer Druckmaschine zugeführt wird
DE10310689B4 (de) * 2002-04-05 2010-11-18 Heidelberger Druckmaschinen Ag Dosiervorrichtung zur Dosierung von Druckfarbe in einer Druckmaschine
PL1867478T3 (pl) * 2005-04-21 2009-07-31 Koenig & Bauer Ag Zespół drukujący z co najmniej dwoma współpracującymi cylindrami
DE102006049619A1 (de) * 2006-10-20 2008-05-15 Man Roland Druckmaschinen Ag Verfahren zum Betreiben eines Farbwerks einer Druckmaschine
DE102011112487A1 (de) * 2011-05-25 2012-11-29 Heidelberger Druckmaschinen Aktiengesellschaft Druckverfahren und Offset-Druckwerk
DE102012209305A1 (de) * 2012-06-01 2013-12-05 Krones Ag Verfahren und Vorrichtung zur Kontrolle bzw. Korrektur eines Direktdrucks auf Behältern mit reliefartiger Oberflächenkontur
CN111823708B (zh) * 2020-08-19 2023-12-08 静宁县恒达有限责任公司 一种柔版印刷机超磁致伸缩材料刮墨刀进给机构

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3820459A (en) * 1972-06-15 1974-06-28 F Paul Offset press fountain keys
US3958509A (en) * 1974-06-13 1976-05-25 Harris Corporation Image scan and ink control system
DE2530109C3 (de) * 1975-07-05 1978-05-03 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbwerk für Druckmaschinen
DE2728738B2 (de) * 1977-06-25 1979-05-10 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Eulrichtung zur Kontrolle und Regelung der Farbgebung an Druckmaschinen
FR2397939A1 (fr) * 1977-07-22 1979-02-16 Chambon Machines Dispositif d'encrage pour impression a l'encre grasse
GB2024457B (en) * 1978-06-07 1983-01-06 Harris Corp Printing press ready and control system
US4223603A (en) * 1979-01-10 1980-09-23 Didde-Glaser, Inc. Planetary inker for offset printing press
US4452139A (en) * 1981-09-08 1984-06-05 Dahlgren Harold P Dampening fluid evaporator and method
FR2516863B1 (fr) * 1981-11-25 1985-11-15 Marinoni Procede et dispositif de transfert d'encre entre un rouleau d'encrier et un premier rouleau encreur pour presse a imprimer
DE3217569C2 (de) * 1982-05-11 1985-11-28 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren und Vorrichtung zum Dosieren der Farbe bei Offsetdruckmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242648A3 (fr) * 1986-04-24 1989-04-26 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif d'encrage pour une rotative d'impression planographique

Also Published As

Publication number Publication date
ES8503205A1 (es) 1985-03-01
US5040459A (en) 1991-08-20
JPS6038158A (ja) 1985-02-27
EP0131186B1 (fr) 1989-01-04
DE3324893C1 (de) 1985-03-14
ES533374A0 (es) 1985-03-01
EP0131186A3 (en) 1986-12-30

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