EP1059167B1 - Dispositif d'encrage pour une machine à imprimer - Google Patents

Dispositif d'encrage pour une machine à imprimer Download PDF

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Publication number
EP1059167B1
EP1059167B1 EP00109108A EP00109108A EP1059167B1 EP 1059167 B1 EP1059167 B1 EP 1059167B1 EP 00109108 A EP00109108 A EP 00109108A EP 00109108 A EP00109108 A EP 00109108A EP 1059167 B1 EP1059167 B1 EP 1059167B1
Authority
EP
European Patent Office
Prior art keywords
inking unit
roller
ink
vacuum chamber
unit according
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
EP00109108A
Other languages
German (de)
English (en)
Other versions
EP1059167B9 (fr
EP1059167A1 (fr
Inventor
Stephen Franklin
Bertold Dr. Grützmacher
Wolfgang Schönberger
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 EP1059167A1 publication Critical patent/EP1059167A1/fr
Application granted granted Critical
Publication of EP1059167B1 publication Critical patent/EP1059167B1/fr
Publication of EP1059167B9 publication Critical patent/EP1059167B9/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
    • B41F31/007—Removing water from ink trains

Definitions

  • the invention relates to an inking unit for a printing press with a metering system for an ink and means for conveying ink on a conveyor line between the dosing system and a plate cylinder of a printing press.
  • On such inking unit is known for example from DE 3 541 458 A1.
  • the object of the invention is therefore an inking unit which in the preamble of claim 1 mentioned type so that a precisely reproducible control of the Dryness levels of a roller with little effort is possible, and that also an influence of the drying process on the climatic conditions other dampening system surfaces of the inking unit or a printing press, in the inking unit is used are excluded.
  • the task is solved with the help of a vacuum chamber for vaporizing a Moisture content of the conveyed color.
  • the one reduced in the vacuum chamber Boiling point of the dampening solution promotes effective evaporation; Moist vapor can be removed via a pump used to generate the negative pressure.
  • the total amount of gas to be pumped is small compared to the air throughput known device. Influencing the behavior of the printing press through out vapor drawn from the vacuum chamber is therefore unlikely, preferably this steam is released at a point where it does not return to the printing press can penetrate, for example outside the room where the printing press is installed.
  • the vacuum chamber is preferably arranged so that it from the conveyor line is going through. So it has the possibility of directly showing the moisture level of the color Reaching the plate cylinder, i.e. immediately before that for the quality of the print critical point in time, or immediately after contact with the impression cylinder, so too at a time when the ink is relatively diluted by dampening solution influence.
  • the vacuum chamber is on one long side limited by at least one roller of the means for conveying paint, with others Words the roller forms a wall of the vacuum chamber.
  • Another wall of the Vacuum chamber can be limited by a hood-like cover that extends extends along the roller and has longitudinal edges facing the roller.
  • the longitudinal edges are sealed to the roller, the type of seal depending on the surface of the Roller is selected.
  • the vacuum chamber on any roller of the inking unit. If the roller is a soft, little abrasion resistant Surface, you get preferably non-contact seals on the longitudinal edges, especially use labyrinth seals. The same applies if the chamber is on one Ink roller with the diameter of the plate cylinder is attached. On a Such inking roller automatically forms the relief of the Subjects, and this must not touch the seals in the vacuum chamber be destroyed if you want to reliably avoid stenciling when printing.
  • the closing squeegees are preferably placed on the roller so that they are in the Air pressure prevailing around the chamber can be pressed against the roller.
  • the vacuum chamber can be in the direction of rotation of the anilox roller in front of or behind one can also be provided on this arranged ink chamber of the metering system.
  • a particularly space-saving option is to attach the vacuum chamber directly to the ink chamber to be arranged adjacent.
  • the long sides of the vacuum chamber can be closed by a Train formed by touching rollers.
  • these rollers By keeping these rollers in contact rotate together, they take up color emulsion from the conveyor line, the spread over the surface of all rollers. This way practically the whole Inner surface of the chamber used for vacuum-assisted drying.
  • the end faces of the chamber are closed with plates. Gap between the rollers and the plates are preferably through a liquid or plastic sealing material sealed by electrostatic or magnetic interaction in place is held.
  • the vacuum chamber immediately is connected to the reservoir for the printing ink, so that the ink in it constantly is exposed to the vacuum, or that the vacuum chamber in a line to Return color to the reservoir or to add color to one Ink chamber is arranged on a roller.
  • FIG. 1 shows parts of a printing press in a highly schematic cross section an inking unit according to the invention.
  • the inking unit comprises an anilox roller 1 to Example an anilox roller, on the surface of which an ink chamber 2 Color metering system is arranged.
  • the ink chamber 2 extends over the axial length the anilox roller 1 and contains an overprinting printing ink.
  • Two elastic closing squeegee 3, 4 extend along the longitudinal edges of the ink chamber 2 and are from the overpressure prevailing therein with their edges against the anilox roller 1 pressed.
  • the in the direction of rotation (arrow 5) of the anilox roller 1 rear doctor blade 4 doses the Paint removed from the chamber 2 by covering the surface of the anilox roller 1 strips off so that only penetrated into depressions in the surface of the anilox roller Color can leave the ink chamber 2.
  • the color metered in this way becomes one by the rotation of the anilox roller 1 Nip further conveyed at which the anilox roller 1 and an inking roller 6th touch.
  • the inking roller 6 takes over part of the ink and conveys it further to a plate cylinder 7 which carries a pressure plate (not shown).
  • One too printing material runs through a gap between the plate cylinder 7 and one Rubber cylinder 8.
  • Anilox roller arranged a vacuum or vacuum chamber 10.
  • This Vacuum chamber comprises an elongated hood 11, which extends over the same length how the ink chamber 2 extends along the anilox roller 1 and all around against it is sealed.
  • the seals in the longitudinal direction of the roller consist of Closing doctor blades 12, 13, as in the ink chamber 2, but with the difference that the in the direction of rotation, the front squeegee 12 is piercing and the rear 13 is arranged pulling. at the ink chamber 2, the arrangement is reversed.
  • This arrangement of the doctor blade 12, 13th is achieved that this in the vicinity of the vacuum chamber 10th prevailing atmospheric pressure can be pressed against the surface of the anilox roller 1. Seals on the longitudinal ends of the chamber are not shown.
  • a suction line 14 connects the vacuum chamber 10 to a suction pump 15 and is on an essentially depending on the installation conditions of the Vacuum chamber 10 in the inking unit to be selected connected to this.
  • the Suction power of the pump 15 and thus the pressure prevailing in the vacuum chamber 10 is depending on a desired degree of dryness through the chamber promoted color adjustable. Typical values of the pressure in the vacuum chamber 10 are in the range of 700 hectopascals or less.
  • the vacuum chamber 10 acts fresh from the Ink chamber 2 promoted paint. This color can result from the transport of dampening solution undesirable from the plate cylinder over the rollers of the inking unit 6.1 into the ink chamber 2 be diluted.
  • the vacuum chamber can also be dashed on the in the figure position 10 'shown. Here it acts on dampening solution in the Ink application roller 6 to the anilox roller 1 returned ink emulsion, even before this reaches the ink chamber 2, thus preventing dilution of the ink in the ink chamber 2 in front.
  • two or more vacuum chambers such as 10 and 10 ' be provided on one or different rollers of the inking unit. It is also possible, a vacuum chamber astride a gap between two rollers to be arranged so that the two doctor blades of the vacuum chamber on different Sliding rollers.
  • Figure 2 shows a preferred further development of the embodiment of Figure 1.
  • the direction of rotation 5 of the anilox roller 1 can, as shown in the figure, be such that the Squeegee 16 acts on paint freshly dosed from chamber 2, but it can also be opposite.
  • FIG 3 shows a perspective view of an inking unit according to a second Embodiment of the invention.
  • the inking unit comprises an ink chamber 2, one Anilox roller 1 and an ink transfer roller 6, the one described with reference to Figure 1 correspond.
  • Seven narrow rollers 18 form a single drum, which is curved extends over a section of the anilox roller 1.
  • Each of the narrow rollers 18 touches along its peripheral surface two adjacent rollers 18 or a roller 18 and the Surface of the anilox roller 1. In this way, the single drum roller forms an airtight one Side wall of a vacuum chamber 17.
  • rollers 18 are rotatably supported in bearings, not shown. Your number is in principle any, but must be odd so that those two of the rollers 18 that the Touch anilox roller 1, rotate in the same direction.
  • a suction line 14 with a suction pump 15 is connected to the vacuum chamber via the front plate 19.
  • Figure 4 shows a section along the line IV-IV of Figure 3 and the axis of rotation of the Anilox roller 1.
  • the sealing material 20 is only a few tenths of a millimeter wide Gap 21 held by an electrostatic force that is applied by applying a voltage the electrically conductive roller body 1.18 on the one hand and the plate 19 on the other hand becomes. This type of seal is practically wear-free and does not pose any particular problems Requirements for the design of the end faces of rollers 1, 18.
  • a magnetic liquid can also be used as the sealing material 20 be held in the gap by magnets.
  • magnets can Example embedded in the rollers 1, 18 and / or preferably the plate 19.
  • Figure 5 shows a section through the arrangement of Figure 3 in the plane of Gaps 21.
  • the sealing material 20 forms a closed one Ring, which in each case in the vicinity of a nip point without gaps from one of the narrow rollers 18 to another or to the anilox roller 1.
  • FIG. 6 shows a printing machine in a highly schematic cross section according to a third embodiment of the invention.
  • the inking roller 6, the plate cylinder 7 and the blanket cylinder 8 each correspond to those already described with reference to FIG. 1.
  • the vacuum chamber 22 is arranged on the inking roller 6 in this embodiment. As already described above with reference to FIG. 1, it comprises an elongated hood 11 which extends over the axial length of the inking roller 6 and to which a suction line 14 and a suction pump 15 are connected in order to produce a regulated negative pressure or vacuum.
  • the circumferential length of the inking roller 6 corresponds exactly to that of the plate cylinder 7. The same points therefore come into contact with the surface of the two rollers each time the two rollers rotate.
  • the vacuum chamber 22 is not sealed with doctor blades sweeping over the surface of the inking roller 6, but with the aid of gap seals 23.
  • These gap seals form a bottleneck between the interior of the vacuum chamber 22 and the ambient air, which at a height of fractions of a millimeter in the radial direction of the Roller 6 may have a length in the circumferential direction of the roller in the range of centimeters.
  • the dimensions of the gap seal 23 and the suction power of the pump 15 are dimensioned as a function of one another in order to achieve a desired working vacuum in the chamber 22.
  • Labyrinth seals are particularly suitable as contact-free seals 23.
  • the vacuum chamber 22 is arranged on the inking roller 6 so that it on the Gap between plate cylinder 7 and inking roller 6 coming ink-fountain solution emulsion acts.
  • another Vacuum chamber 22 ' may be arranged on an opposite side of the roller acts on such an emulsion before entering the cleavage site.
  • vacuum chamber 22 or 22 'can also have one or more the vacuum chambers described with reference to the previous figures. be combined.
  • Figure 7 shows a further embodiment of the inking unit according to the invention.
  • the rollers 1 and 6 and the ink chamber 2 correspond to those in the previous examples .
  • a pressure pump 25 is a further component of the ink metering system shown that the ink chamber 2 with ink from a reservoir or Ink fountain 26 supplied.
  • the moisture content can be the color returned in the ink fountain 26 to a desired value in a simple manner or adjust the moisture content of the color contained in the ink fountain 26.
  • a heating device in of the evaporator unit 28 it is easily possible to install a heating device in of the evaporator unit 28 to intensify the drying of the paint without that this is due to temperature and humidity conditions elsewhere in the Printing press affects.
  • the color added with dampening solution can also be of a any other roller of the inking unit removed with the help of a separate doctor blade, in collected in a box and fed to an evaporator unit such as unit 28 and be dried in it. It is also possible to close the evaporator unit 28 and ink fountain 26 merge, that is, a negative air space directly above the Provide liquid level of the ink fountain 26 so that on the surface of the paint in Ink box the evaporation can take place. You could even get one of those Ink conveyor section between the storage container and the plate cylinder separate Provide support group in the color between a storage container and one Evaporator unit is circulated to dry the paint in the evaporator unit.

Claims (15)

  1. Groupe d'encrage pour une machine à imprimer, comprenant un système de dosage (2;2,25-30) pour l'encre, et des moyens (1, 6) pour transporter l'encre sur un parcours de transport entre le système de dosage (2;2,25-30) et un cylindre porte-plaque (7) d'une machine à imprimer,
    caractérisé en ce qu'il comprend une chambre de dépression (10;17;22) pour évaporer, en cours de fonctionnement, une part humide de l'encre transportée.
  2. Groupe d'encrage selon la revendication 1, caractérisé en ce que le parcours de transport traverse la chambre de dépression (10;17;22).
  3. Groups d'encrage selon la revendication 1 ou 2, caractérisé en ce que la chambre de dépression (10;17;22) est délimitée sur un côté longitudinal, par au moins un rouleau (1;6) faisant partie des moyens pour le transport de l'encre.
  4. Groupe d'encrage selon la revendication 3, caractérisé en ce que la chambre de dépression (10;22) est par ailleurs délimitée par un recouvrement (11) en forme de capot, qui s'étend le long du rouleau (1;6) et présente des bords longitudinaux dirigés vers le rouleau.
  5. Groupe d'encrage selon la revendication 4, caractérisé en ce que les bords longitudinaux sont rendus étanches par des joints d'étanchéité sans contact (23).
  6. Groupe d'encrage selon la revendication 4, caractérisé en ce que les bords longitudinaux sont rendus étanches par des racles de fermeture (12, 13, 16).
  7. Groupe d'encrage selon la revendication 6, caractérisé en ce que les racles de fermeture (12, 13) sont appliquées contre le rouleau (1) de façon à être pressées contre la rouleau (1) par la pression d'air régnant dans l'environnement de la chambre (10).
  8. Croupe d'encrage selon l'une des revendications 5 à 7, caractérisé en ce que le rouleau (1) est un rouleau tramé et en ce que le système de dosage comprend une chambre d'ancrage (2) disposée sur le rouleau tramé (1).
  9. Groupe d'encrage selon la revendication 8, caractérisé en ce que la chambre de dépression (10) est directement adjacente à la chambre d'encrage (2).
  10. Groupe d'encrage selon la revendication 9, caractérisé en ce que la chambre de dépression (10) et la chambre d'encrage (2) sont séparées l'une de l'autre par une racle commune (16).
  11. Groupe d'encrage selon la revendication 3, caractérisé en ce que la côtés longitudinaux de la chambre de dépression (17) sont formés par un train de rouleaux (18, 1) en contact réciproque.
  12. Groupe d'encrage selon la revendication 11, caractérisé en ce que la chambre de dépression (17) présents des côtés frontaux fermés par des plaques (19).
  13. Groupe d'encrage selon la revendication 12, caractérisé en ce qu'entre les rouleaux (1, 18) et les plaques (19) est maintenu un matériau d'étanchéité (22) fluide ou plastique, par une interaction électrostatique et/ou magnétique.
  14. Groupe d'encrage selon la revendication 1 ou 2, caractérisé en ce que la chambre de dépression est reliée directement à un réservoir de réserve du système de dosage.
  15. Groupe d'encrage selon la revendication 2, caractérisé en ce que la chambre de dépression est disposée dans une conduite (27, 30) pour le retour d'encre dans un réservoir de réserve (26) du système de dosage, ou bien pour amener de l'encre du réservoir de réserve (26) à une chambre d'encrage (2) sur un rouleau (1).
EP00109108A 1999-05-31 2000-05-04 Dispositif d'encrage pour une machine à imprimer Expired - Lifetime EP1059167B9 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924997A DE19924997A1 (de) 1999-05-31 1999-05-31 Farbwerk für eine Druckmaschine
DE19924997 1999-05-31

Publications (3)

Publication Number Publication Date
EP1059167A1 EP1059167A1 (fr) 2000-12-13
EP1059167B1 true EP1059167B1 (fr) 2003-07-23
EP1059167B9 EP1059167B9 (fr) 2003-11-12

Family

ID=7909827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109108A Expired - Lifetime EP1059167B9 (fr) 1999-05-31 2000-05-04 Dispositif d'encrage pour une machine à imprimer

Country Status (4)

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US (1) US6418844B1 (fr)
EP (1) EP1059167B9 (fr)
JP (1) JP2000355094A (fr)
DE (2) DE19924997A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10160734B4 (de) * 2001-01-11 2012-06-21 Heidelberger Druckmaschinen Ag Druckmaschine
DE10246271A1 (de) * 2002-10-02 2004-04-15 Windmöller & Hölscher Kg Verfahren und Vorrichtung zum Einstellen der Farbdichte auf einem Bedruckstoff
KR101232168B1 (ko) * 2006-06-30 2013-02-12 엘지디스플레이 주식회사 인쇄 장치 시스템, 및 그를 이용한 패턴 형성방법 및액정표시소자 제조방법
DE102008000862A1 (de) * 2008-03-27 2009-10-01 Manroland Ag Verfahren zum Entfeuchten von Komponenten eines Kurzfarbwerkes einer Druckmaschine und Einrichtung zur Verfahrensdurchführung
US8893616B2 (en) * 2011-07-27 2014-11-25 Xerox Corporation Ghost-free inking methods, apparatus, and systems with reduced fountain solution contamination
CN103302954A (zh) * 2013-06-04 2013-09-18 深圳新宏泽包装有限公司 一种新型条码印刷装置及其制作工艺
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
US9908322B2 (en) 2014-09-15 2018-03-06 Koenig & Bauer Ag Device and method for adjusting and/or modifying a profile in the supply of dampening medium, extending in the direction of the printing width, and printing unit having a device for adjusting and/or modifying the profile
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

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DE226839C (fr)
US2196412A (en) * 1938-07-25 1940-04-09 Roberts & Porter Inc Dampener for printing presses
US2676536A (en) * 1953-05-04 1954-04-27 George J Ste-Marie Drying means for the inking rollers of lithographic and the like printing presses
US2843040A (en) * 1954-08-17 1958-07-15 Childers Warren Ink conditioning equipment for rotary lithographic press
DE2942691C2 (de) * 1979-10-23 1983-11-10 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Reitervorrichtung zum Aufsetzen auf eine Walze eines Farbwerkes
US4341156A (en) * 1980-08-28 1982-07-27 Cip Inc. Dilitho printing image heating
US4452139A (en) * 1981-09-08 1984-06-05 Dahlgren Harold P Dampening fluid evaporator and method
US4524689A (en) * 1982-09-13 1985-06-25 Lemaster Milton R Dehydration apparatus for printing press inking system
DD226839A1 (de) * 1984-08-15 1985-09-04 Polygraph Leipzig Vorrichtung zum entfernen des ueberschuessigen feuchtmittels im farbwerk
JPH089225B2 (ja) * 1985-06-03 1996-01-31 東芝機械株式会社 印刷機における過剰湿し水除去装置
DE3541458A1 (de) * 1985-11-23 1987-05-27 Koenig & Bauer Ag Kurzfarbwerk fuer offsetrotationsdruckmaschinen
DE3725971A1 (de) * 1987-08-05 1989-02-16 Helmut Prof Dr Ing Rech Feuchtmittelsperre zur leistungssteigerung des offsetdruckverfahrens
DE68922925T2 (de) * 1988-03-08 1995-11-30 M Dale Smith Vorrichtung zum Verdampfen von Befeuchtungsmitteln.
US5085142A (en) * 1988-03-08 1992-02-04 Smith Maurice D Dampening fluid evaporator
US5209160A (en) * 1988-03-08 1993-05-11 Smith Maurice D Blower mounting for dampening fluid evaporator
JPH0286449A (ja) 1988-09-22 1990-03-27 Mitsubishi Heavy Ind Ltd インキ供給装置
US5165342A (en) * 1991-08-02 1992-11-24 The Langston Corporation Evacuation system for inking chamber
US5454310A (en) * 1994-11-16 1995-10-03 Varn Company Segmented oscillating fluid evaporator roller for printing presses
DE29805201U1 (de) * 1998-03-23 1998-05-20 Roland Man Druckmasch Aniloxfarbwerk für eine Offsetrotationsdruckmaschine

Also Published As

Publication number Publication date
JP2000355094A (ja) 2000-12-26
EP1059167B9 (fr) 2003-11-12
DE19924997A1 (de) 2000-12-07
US6418844B1 (en) 2002-07-16
DE50002965D1 (de) 2003-08-28
EP1059167A1 (fr) 2000-12-13

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