EP0023629B1 - Einrichtung zur zonalen Regulierung der Feuchtmittelführung - Google Patents

Einrichtung zur zonalen Regulierung der Feuchtmittelführung Download PDF

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Publication number
EP0023629B1
EP0023629B1 EP80104138A EP80104138A EP0023629B1 EP 0023629 B1 EP0023629 B1 EP 0023629B1 EP 80104138 A EP80104138 A EP 80104138A EP 80104138 A EP80104138 A EP 80104138A EP 0023629 B1 EP0023629 B1 EP 0023629B1
Authority
EP
European Patent Office
Prior art keywords
zone
ink
dampening solution
amount
adjustment
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
Application number
EP80104138A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0023629A1 (de
Inventor
Rudi Junghans
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
Priority to AT80104138T priority Critical patent/ATE2407T1/de
Publication of EP0023629A1 publication Critical patent/EP0023629A1/de
Application granted granted Critical
Publication of EP0023629B1 publication Critical patent/EP0023629B1/de
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
    • B41F31/007—Removing water from ink trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0054—Devices for controlling dampening

Definitions

  • the invention relates to a device for zonal regulation of the dampening solution guidance over the width of the printing form of an offset printing press with actuators for zone-wise ink metering.
  • This local dampening solution management is partly by metering the amount of dampening solution supplied, such as. B. in the contactless dampening systems (DE-C-2439999 and DE-C-2 058 667), partly but also by local, partial blowing or scraping the amount of dampening solution supplied to a dampening roller, which also includes ink rollers.
  • the invention has for its object to influence the mechanical dampening solution in such a way that the tolerance range between the so-called smear limit - too little water - and the water mark limit - too much water - is significantly expanded. Furthermore, the optimal pressure conditions, which are close to the lubrication limit of certain zones, are intended to increase the quality of all zones. It is based on the knowledge that there is a certain relationship between the metered amount of ink and the amount of fountain solution required under the same printing conditions.
  • the variations of the duct rotation angle and metering are available for both media via zonal actuators.
  • the zonal actuator must be used for the subject of the shape, for the subject-independent parameters such as B. machine speed, room temperature, etc., the change of the zonal independent control element (z. B. ductor speed, color stripe width, metering valve in contactless dampening systems, etc.) is appropriate.
  • the device for zonal dampening solution guidance over the width of the printing form of an offset printing machine is characterized in that the actuators for the zone-wise ink metering are assigned zonal actuators for the dampening solution guidance and these are coupled to one another with the involvement of an adapter, the transmission characteristics of which depend on the amount of ink added and the corresponds to the amount of dampening solution required to maintain a color / fountain solution equilibrium and can be modified to adapt to different operating conditions which result in different dependencies.
  • the measures according to the invention clearly assign the amount of dampening solution zonally to the amount of ink according to a specific, generally non-linear characteristic.
  • the characteristic curve is set according to the water absorption capacity of the paint, making optimal use of the area between the water marks and the smear limit by means of the adapter.
  • the printer then only has to actuate the zonal ink actuator if a suitable, generally medium basic setting of the ink and dampener rotation angle has been carried out beforehand.
  • the correct zonal allocation of the amount of dampening solution then takes place temporarily without the printer having to do anything.
  • optical density on the printed sheet or other correlating values in the machine itself can be automated if there are deviations from the target value of the density and the resulting corrective measures by switching on control systems known from control technology.
  • the exemplary embodiments shown always relate to a zonally assigned unit.
  • a wet zone is directly assigned to each ink zone, the width of a wet or ink zone corresponding to the distance between the ink actuators.
  • Fig. 1 shows a side view of an offset printing unit, in which the sheets to be printed are passed between printing cylinder 1 and blanket cylinder 2 in a known manner.
  • the rubber cylinder 2 works together with a plate cylinder 3 which is provided with dampening solution and ink by a dampening unit 4 and an inking unit 5.
  • the structure of the dampening and inking unit corresponds to a modern design, the dampening solution being fed from a dampening roller 6 and the ink from an ink fountain roller 7 to the rollers of the dampening inking unit.
  • the dampening roller 6 is immersed in dampening solution 8 and the ink fountain roller 7 receives the ink 9 from an ink fountain 10.
  • a number of inking cylinders 11 are provided on the ink fountain 10 parallel to the ink fountain roller 7, which can be adjusted by means of adjusting screws 12.
  • inking cylinders 11 are provided on the ink fountain 10 parallel to the ink fountain roller 7, which can be adjusted by means of adjusting screws 12.
  • blow-off devices for excess fountain solution facilities such. B. in the form of a centrifugal blower 13, as shown in FIG. 1, either in front of the ink roller 14 or other, for. B. the rollers marked with an arrow, the wet inking unit.
  • the inking cylinders 11 are adjusted via the lever gear 16 in such a way that more or less ink 9 can be given to the inking unit 5 through the ink fountain roller 7 through the curved channels in the inking cylinders 11.
  • a color setting cylinder 11 is provided for each color zone of approximately 30 mm in width.
  • the lever gear 16 is gem.
  • Fig. 2 a pivotable blowpipe 17 coupled to the adjusting nut 15, so that at the same time with the adjustment of the ink supply via the lever gear 24, a change in the blowing angle of the blowpipe 17 on an inking roller 14 takes place.
  • the inking roller 14 also carries fountain solution.
  • the proportion of dampening water in the relevant zone of the blown ink roller 14 is changed depending on the angle of attack of the blow pipe 17 and the intensity of the air supply.
  • the supply line 18 supplies all blow pipes 17 arranged for each zone at the same time via separate hoses 19.
  • a valve 20 acting as an adapter in front of the supply line 18 the dependency of the amount of dampening solution blown off on the amount of ink supplied can be changed depending on the factors influencing the amount of water.
  • the pivotable blowpipes 17 are mounted in a bearing part 21 common to all blowpipes.
  • the embodiment shown in FIG. 3 contains, instead of the pivotable blowpipes 17, the fixed blowpipes 22, which are rigidly connected to the det-i valve body 23 and are directed towards the ink roller 14 that guides the dampening agent.
  • the coupling with the color control system takes place via the lever gear 24, a different valve opening being set depending on the position of the color control screws 12.
  • the embodiment shown in Figure 4 is a coupling of the zonal ink and zonal dampening control elements, for. B. from centrifugal fans 13 for blowing off excess dampening solution by means of electrical components.
  • the adjusting nut 15 for each zone, the adjusting screw 12 of which is driven in the example shown by an actuator 27, is connected to the sliding contact 28 of a variable electrical resistor 29.
  • the armature voltage supplied to the DC motor 30 is set depending on the position of the sliding contact 28, as a result of which the blower motor speed and thus the amount of blown air supplied is achieved with the inking cylinder 11.
  • the excitation current in the excitation winding 31 is adjustable by the variable resistor 32.
  • the variable resistor 32 is used here as an adapter.
  • the DC motor 30 can be operated either as a separately excited motor or as a shunt motor.
  • the adaptation via the variable resistor 32 brings about a more or less linear adaptation.
  • Fig. 5 the relationship between the ink actuator opening X and the required amount of water Q is shown in a diagram as an example without claim to quantitative validity.
  • the inking cylinder opening is shown on the abscissa of the diagram, and the amount of dampening solution to be assigned zonally is shown on the ordinate.
  • the straight line 36 represents a strongly idealized connection; curve 37 an assumed relationship of the quantitative ratios to be determined by experiment.
  • a quantity of water Y1 and Y2 is to be removed if, regardless of the inking cylinder opening, e.g. B. is supplied by the dampening roller 6, a constant amount of dampening solution Qo.
  • F i g. 6 shows a block diagram.
  • the first block 38 represents a measuring element which determines the position of the inking cylinder 11 zone by zone.
  • the second block 39 represents an electronic computing unit which brings about the relationship between the values X and Y of the diagram of FIG. 5 in accordance with the characteristic curve shown in this block.
  • the characteristic Z can be used to influence the characteristic curve (curve with parameters Z1 or Z2). This system applies e.g. B. for a blow-off device by means of a fan 13.
  • Fig. 7 shows a modification of Fig. 6 such that the size Y corresponds to the opening degree of the aperture 40 of a dampening solution spraying unit 41.
  • the input variable X of the electronic computing unit 43 corresponds to the zonal color quantity, the input variable Z to the adaptation.
  • the computing units 39 and 43 are elements or components known from electronics or control technology. Microprocessors can also be used for this.
  • FIG. 8 shows schematically once again a blow-off device for blowing off too much conveyed dampening solution by means of a centrifugal fan 13.
  • the blow-off is provided directly on a dampening roller 44.
  • FIG 9 schematically shows a similar device in which the centrifugal fan 13 is replaced by an air nozzle 45.
  • FIG. 10 schematically shows a device for the evaporation of excess amount of moisture conveyed by an electrical resistance heater 46.
  • Fig. 11 shows a similar device, in which instead of the resistance heater 46, infrared light from a lamp 47 is used to evaporate too much pumped water.
  • FIG. 12 shows schematically the application of the invention according to FIG. 7 by means of a spray or brush dampening unit 48.
  • the amount of dampening solution supplied can be regulated via the orifice 40 and the adjusting means 49.
  • FIG. 13 shows the application in a centrifugal dampening unit 50, the amount of dampening solution being regulated by means of motorized adjustment by means of valves (not shown) in the dampening solution supply.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP80104138A 1979-08-03 1980-07-16 Einrichtung zur zonalen Regulierung der Feuchtmittelführung Expired EP0023629B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104138T ATE2407T1 (de) 1979-08-03 1980-07-16 Einrichtung zur zonalen regulierung der feuchtmittelfuehrung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2931579 1979-08-03
DE2931579A DE2931579C2 (de) 1979-08-03 1979-08-03 Einrichtung zur zonalen Regulierung der Feuchtmittelführung

Publications (2)

Publication Number Publication Date
EP0023629A1 EP0023629A1 (de) 1981-02-11
EP0023629B1 true EP0023629B1 (de) 1983-02-09

Family

ID=6077584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104138A Expired EP0023629B1 (de) 1979-08-03 1980-07-16 Einrichtung zur zonalen Regulierung der Feuchtmittelführung

Country Status (4)

Country Link
EP (1) EP0023629B1 (enrdf_load_stackoverflow)
JP (2) JPS5624166A (enrdf_load_stackoverflow)
AT (1) ATE2407T1 (enrdf_load_stackoverflow)
DE (1) DE2931579C2 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009040057A1 (de) 2008-09-18 2010-04-01 Heidelberger Druckmaschinen Ag Feuchtwerk einer Druckmaschine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132561A (ja) * 1982-02-03 1983-08-06 Toppan Printing Co Ltd インキ及び湿し水の供給方法
JPS58132560A (ja) * 1982-02-03 1983-08-06 Toppan Printing Co Ltd インキ及び湿し水の供給方法
DE3203500C2 (de) * 1982-02-03 1988-03-03 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbmesser und eine Einstellvorrichtung für ein Farbmesser
JPS58145453A (ja) * 1982-02-24 1983-08-30 Toppan Printing Co Ltd インキ及び湿し水の供給方法及び装置
JPS58153655A (ja) * 1982-03-10 1983-09-12 Toppan Printing Co Ltd インキ及び湿し水の供給方法及び装置
DE3211157A1 (de) * 1982-03-26 1983-10-06 Roland Man Druckmasch Verfahren und vorrichtung zum befeuchten von druckplatten
DE3220701C3 (de) * 1982-06-02 1995-09-07 Heidelberger Druckmasch Ag Vorrichtung zur Feuchtmittelführung bei einem Offsetdruckwerk
AT389675B (de) * 1982-06-02 1990-01-10 Heidelberger Druckmasch Ag Vorrichtung zur farbprofilabhaengigen feuchtmittelregelung
JPS5990446U (ja) * 1982-12-07 1984-06-19 三菱重工業株式会社 オフセツト印刷機のインキ装置
ES527317A0 (es) * 1982-12-23 1984-08-01 Heidelberger Druckmasch Ag Dispositivo para la regulacion de medio humedecedor,dependiente del perfil de tinta,en un mecanismo entintador de maquinas de imprenta offset
JPS60120054A (ja) * 1983-11-30 1985-06-27 ミルトン・レイ・レマスター 印刷機インキ装置の脱水装置および方法
JPS6179656A (ja) * 1984-09-28 1986-04-23 Dainippon Printing Co Ltd オフセツト印刷機
DD253679A1 (de) * 1986-11-13 1988-01-27 Polygraph Leipzig Verfahren zum regeln der farbdichte
DE3725971A1 (de) * 1987-08-05 1989-02-16 Helmut Prof Dr Ing Rech Feuchtmittelsperre zur leistungssteigerung des offsetdruckverfahrens
DE3907584A1 (de) * 1989-03-09 1990-09-13 Heidelberger Druckmasch Ag Verfahren zur feuchteregelung bei einer offsetdruckmaschine
JPH0745245B2 (ja) * 1991-06-28 1995-05-17 株式会社東京機械製作所 平版印刷方法及び平版印刷装置
DE4125012A1 (de) * 1991-07-27 1993-01-28 Koenig & Bauer Ag Einrichtung zum befeuchten von zylindern bei offsetrotationsdruckmaschinen
DE4206525C2 (de) * 1992-03-02 2001-05-17 Heidelberger Druckmasch Ag Vorrichtung zur Beeinflussung einer Feuchtmittelverteilung in einem Druckwerk einer Druckmaschine
JP2599074Y2 (ja) * 1992-10-09 1999-08-30 株式会社小森コーポレーション 印刷機の水上り抑制装置
DE4436582C2 (de) * 1994-10-13 1998-07-30 Heidelberger Druckmasch Ag Verfahren zur Regelung einer Feuchtmittelmenge für eine Druckform einer laufenden Offsetrotationsdruckmaschine
WO1996016806A1 (fr) * 1994-11-25 1996-06-06 Brepols N.V. Procede et dispositif d'indication de rebuts dans une presse rotative appliquant un procede lithographique
DE19643353A1 (de) * 1996-10-21 1998-04-23 Heidelberger Druckmasch Ag Vorrichtung zur Dosierung von Flüssigkeiten
DE19838020A1 (de) * 1997-09-15 1999-03-18 Roland Man Druckmasch Vorrichtung zum Auftragen von Feuchtmittel auf den Zylinder einer Rotationsdruckmaschine
US6076463A (en) * 1998-03-13 2000-06-20 Heidelberger Druckmaschinen Ag Ink metering device and method of metering ink
DE10152466B4 (de) * 2000-11-24 2015-12-17 Heidelberger Druckmaschinen Ag Feuchteregelung unter Berücksichtigung mehrerer den Druckprozess beeinflussender Größen
DE10058550A1 (de) 2000-11-24 2002-05-29 Heidelberger Druckmasch Ag Verfahren zur Regelung des Farb-zu-Feuchtmittelgleichgewichts in einer Rotations-Offsetdruckmaschine
DE102007028969A1 (de) * 2007-06-23 2008-12-24 Manroland Ag Verfahren zur Ermittlung eines Stellsignals für Farbzonenstellelemente eines Farbwerks oder für Feuchtmitteldosiereinrichtungen eines Feuchtwerks
JP5069523B2 (ja) * 2007-08-31 2012-11-07 株式会社加貫ローラ製作所 オフセット印刷機の給水装置
DE102007042458A1 (de) * 2007-09-06 2009-03-12 Manroland Ag Druckwerk einer Druckmaschine
DE102009052094A1 (de) 2008-12-05 2010-06-10 Heidelberger Druckmaschinen Ag Verfahren zur Feuchtmittelsteuerung in einer Druckmaschine
DE102014218451B4 (de) 2014-09-15 2018-05-03 Koenig & Bauer Ag Vorrichtungen und Verfahren zur Einstellung und/oder Änderung eines sich in Richtung Druckbreite erstreckenden Profils in der Feuchtmittelführung sowie Druckwerk mit einer Vorrichtung zur Einstellung und/oder Änderung des Profils
DE102014218452A1 (de) 2014-09-15 2016-04-07 Koenig & Bauer Ag Vorrichtungen und Verfahren zur Einstellung und/oder Änderung eines sich in Richtung Druckbreite erstreckenden Profils in der Feuchtmittelführung sowie Druckwerk mit einer Vorrichtung zur Einstellung und/oder Änderung des Profils
EP3194170B1 (de) * 2014-09-15 2019-07-31 Koenig & Bauer AG Einstellung und/oder änderung eines profils in der feuchtmittelführung eines druckwerks

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DE1268154B (de) * 1966-03-22 1968-05-16 Planeta Veb Druckmasch Werke Feuchtwerk fuer Offsetdruckmaschinen
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DE2214721B1 (de) * 1972-03-25 1973-06-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren und vorrichtung zum selbsttaetigen ausregeln von schwankungen der farb- und feuchtfluessigkeitsfuehrung an offsetmaschinen
FR2178802B2 (enrdf_load_stackoverflow) * 1972-04-07 1974-08-02 Uniroyal
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Publication number Priority date Publication date Assignee Title
DE2058667C (de) * 1970-11-28 1972-12-28 Weitmann & Konrad, 7023 Echterdingen Vorrichtung in Druckereimaschinen, insbesondere Offsetmaschinen, zum Aufbringen von Flüssigkeit auf bewegte Flächen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009040057A1 (de) 2008-09-18 2010-04-01 Heidelberger Druckmaschinen Ag Feuchtwerk einer Druckmaschine

Also Published As

Publication number Publication date
JPS6164446U (enrdf_load_stackoverflow) 1986-05-01
EP0023629A1 (de) 1981-02-11
DE2931579C2 (de) 1982-11-11
DE2931579A1 (de) 1981-02-05
JPS5624166A (en) 1981-03-07
ATE2407T1 (de) 1983-03-15

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