EP0441220B1 - Dispositif de mouillage - Google Patents

Dispositif de mouillage Download PDF

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Publication number
EP0441220B1
EP0441220B1 EP91101100A EP91101100A EP0441220B1 EP 0441220 B1 EP0441220 B1 EP 0441220B1 EP 91101100 A EP91101100 A EP 91101100A EP 91101100 A EP91101100 A EP 91101100A EP 0441220 B1 EP0441220 B1 EP 0441220B1
Authority
EP
European Patent Office
Prior art keywords
damping
roller
unit according
dampening
agent application
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
EP91101100A
Other languages
German (de)
English (en)
Other versions
EP0441220A2 (fr
EP0441220A3 (en
Inventor
Georg Schneider
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert 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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0441220A2 publication Critical patent/EP0441220A2/fr
Publication of EP0441220A3 publication Critical patent/EP0441220A3/de
Application granted granted Critical
Publication of EP0441220B1 publication Critical patent/EP0441220B1/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
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/28—Damping devices using brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/40—Devices for tripping or lifting damping rollers; Supporting, adjusting, or removing arrangements therefor

Definitions

  • the invention relates to a dampening system according to the preamble of claim 1.
  • a generic dampening unit of this type is known from EP 01 41 217 A1.
  • the dampening solution is sprayed onto a first dampening roller and from there it reaches the plate via two or more subsequent rubber-coated rollers.
  • a three-roller spray dampening unit has become known, in which a distribution cylinder with copper or plastic coating, a dampening solution application roller and a roller upstream of the distribution cylinder are provided. A liquid is applied to the upstream roller using a spray device.
  • a dampening system of this type is e.g. B. known from DE-PS 35 26 236.
  • the dampening solution is sprayed onto a first dampening roller by means of a rotatable plate and from there it arrives at a combined ink-dampening roller via a subsequent rubber-coated second roller and a plastic-coated third roller.
  • All dampening rollers, with the exception of the combined ink dampening roller, are in toothed connection with one another, with considerable slip being generated between the surfaces of the first chrome roller and the second rubber roller.
  • the subject after This citation has the disadvantage that additional rollers, which connect the dampening unit to the inking unit, are required.
  • dampening systems with a combined ink dampening roller have the disadvantage that inks of inferior quality, such as those used in newspaper printing, cannot be used, since the dampening solution gets more into the inking unit via the combined ink dampening roller, which is particularly the case with printing inks inferior quality leads to loss of quality in printing.
  • the gear wheels for driving the dampening rollers are structurally complex and cause additional costs. In addition, they represent a strong source of noise. A slip between a chrome and a rubber-coated roller leads to the rapid destruction of the rubber roller in the event that the dampening unit should run dry.
  • the invention has for its object to provide a dampening unit working directly on a plate cylinder with good emulsifying properties, which can also be used as a rewetting unit.
  • the dampening solution covers a sufficiently long path from the spray device to the plate cylinder in order to be able to emulsify well with the printing ink on the dampening rollers with a color-friendly surface.
  • Several pinch points at the transfer points between two dampening solution rollers reinforce this positive emulsion effect.
  • Additional drives for the dampening solution rollers and artificially generated slip can be dispensed with. This measure results in a longer service life of the dampening unit rollers and less noise generated by additional gear wheels. Different diameters of the dampening roller prevent duplication.
  • Eccentrically adjustable axes and adjustable stops allow the setting of precise contact pressures between the individual dampening unit cylinders and the plate cylinder.
  • FIG. 1 shows a schematic illustration of the side view of the brush dampening system according to the invention
  • FIG. 2 shows a second exemplary embodiment
  • FIG. 3 shows a section III-III in FIG. 2.
  • a dampening unit 1 for an offset rotary printing press has a dampening solution spray device 2. This consists of a dampening solution box 3, a rotatably mounted dampening box roller 4 immersed in the dampening solution and a rotatably mounted brush roller 6 which is in brush contact with the dampening box roller 4. Both spray rollers 4, 6 are driven by a drive of the printing press.
  • the dampening solution is sprayed in the form of fine droplets onto a dampening roller 7 with a dampening agent-friendly, preferably chrome-coated surface 8.
  • the dampening roller 7 is rotatably mounted in side frames and is driven by the drive of the printing press at machine speed.
  • the dampening roller 7 is in contact with a second dampening roller 9 by means of its surface 8 with a dampening solution.
  • This has a color-friendly surface 11 (eg rubber, hardness approx. 30-40 ° Shore A) and is rotatably mounted on an axis 12.
  • the axis 12 is adjustably mounted in levers 14 by means of eccentric bushes 13.
  • the levers 14 are each pivotably mounted about a pin 16 of the dampening roller 7 which is rotatably mounted in the side frames.
  • the dampening roller 9 transfers the dampening solution to a third dampening roller 17, which has a color-friendly surface 18, in particular a polyamide-coated surface 18 (eg Rilsan, hardness approx. 90 ° Shore D). This is rotatably mounted on an axis 19.
  • the axis 19 is slidably mounted in the ends of the levers 14.
  • the dampening roller 17 transfers the dampening solution to a dampening solution application roller 23 with a color-friendly surface 24 (e.g. rubber, hardness approx. 30-40 ° Shore A), from which the dampening solution reaches a plate cylinder 26.
  • a color-friendly surface 24 e.g. rubber, hardness approx. 30-40 ° Shore A
  • the dampening roller 23 is rotatably mounted on an axis 27 which is fixed in an eccentric bushing 29 arranged in the levers 14.
  • the third dampening roller 17 can be adjusted relative to the dampening roller 23.
  • the third dampening roller 17 is adjusted relative to the second dampening roller 9 by shifting the axis 19 with respect to the axis 12 of the dampening roller 9.
  • the levers 14 each have a receptacle 28, in which the axis 19 is suspended laterally.
  • mutually parallel threaded holes 37 are provided in the axis 19 perpendicular to the axis 19 on both sides of the dampening roller 17 .
  • An adjusting sleeve 38 with an external thread is screwed into each of the threaded bores 37, each of which is supported on the base 39 of the receptacles 28.
  • a counter screw 41 is passed through the inner part of the adjusting sleeves 38 and screwed into a threaded bore 42 in the lever 14. With the lock screw 41, the adjusting sleeve 38 can be fixed so that the axis 19 can be locked in the desired position.
  • the second dampening roller 9 is adjusted relative to the first dampening roller 7 by means of the eccentric bushing 13.
  • the levers 14 each have at their upper end a receptacle 31 for a piston rod 32 of a working cylinder 33 which is pivotally attached to the side frame.
  • the piston rods 32 extend and set this dampening solution application roller 23 against the plate cylinder 26 under adjustable pressure.
  • the setting is made via two adjustable stops 34, which are each fastened to the inside of the side frames and are each arranged to be brought into contact with a fixed stop 36 of the lever 14.
  • the dampening solution in the form of small droplets is sprayed onto the dampening agent-friendly surface 8 of the dampening roller 7 by the dampening solution spray device 2.
  • the dampening roller 7 is driven by the drive of the printing press in such a way that the peripheral speeds of the dampening roller 7 and plate cylinder 26 are the same.
  • the second dampening roller 9 is driven by friction from the first dampening roller 7 and can be adjusted relative to the latter by means of the eccentric bushes 13.
  • the dampening solution now passes from the ink-friendly surface 11 of the dampening roller 9 to the ink-friendly surface 18 of the dampening roller 17 and from there to the ink-friendly surface 24 of the dampening solution application roller 23. From the dampening solution application roller 23, the dampening solution reaches the plate cylinder 26, which drives the dampening solution application roller 23 by friction, which in turn drives the dampening roller 17 together with the dampening roller 9 by friction.
  • the dampening rollers 7, 9 and the dampening solution application roller 23 are mounted in common levers 43.
  • two levers 44 are provided, which are arranged eccentrically adjustable relative to the levers 43.
  • the bearings of the dampening rollers 7, 9 are unchanged from the first embodiment.
  • the axis 27 of the dampening solution application roller 23 is mounted centrally in an adjusting sleeve 46.
  • the adjusting sleeve 46 has on its end face a pin 47 arranged eccentrically to the axis 27.
  • the lever 44 is pivotably mounted on the pin 47.
  • the dampening roller 17 can be adjusted relative to the dampening agent application roller 23.
  • a contact pressure between the third dampening roller 17 and the second dampening roller 9 is generated by the force of gravity acting on the dampening solution roller.
  • the dampening rollers 7, 9, 17, 23 have different diameters a, b, c, d from one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (15)

  1. Dispositif de mouillage d'une machine offset rotative à bobines avec exécution séparée en amont ou en aval d'un dispositif d'encrage, dans lequel l'agent mouillant peut être pulvérisé sous forme de gouttelettes sur un premier rouleau mouilleur entraîné (7) possédant une surface propice à l'agent mouillant et peut être appliqué sur la plaque d'impression d'un cylindre porte-plaque (26) par l'intermédiaire d'un second (9) et d'un troisième rouleau mouilleur (17) intercalés ainsi que d'un rouleau applicateur (23) de préférence garni de caoutchouc et propice à l'encre, le second rouleau mouilleur (9), à savoir le premier rouleau mouilleur intercalé, comportant un revêtement (11) en matériau tendre dont la surface est propice à l'encre, caractérisé en ce que le troisième rouleau mouilleur (17), à savoir le second rouleau mouilleur intercalé, comporte un revêtement (18) en matériau dur propice à l'encre, en ce que les rouleaux mouilleurs (7, 9, 17) et le rouleau applicateur d'agent mouillant (23) possèdent des diamètres différents l'un de l'autre (a ; b ; c ; d), et en ce que le deuxième rouleau mouilleur (9), le troisième rouleau mouilleur (17) et le rouleau applicateur d'agent mouillant (23) sont entraînés par friction.
  2. Dispositif de mouillage selon la revendication 1, caractérisé en ce que les trois rouleaux mouilleurs (7, 9, 17) et le rouleau applicateur d'agent mouillant (23) sont montés ensemble de manière pivotante autour de l'axe (16) du premier rouleau mouilleur (7).
  3. Dispositif de mouillage selon les revendications 1 et 2, caractérisé en ce que les trois rouleaux mouilleurs (7, 9, 17) et le rouleau applicateur d'agent mouillant (23) sont logés ensemble, sur leur deux côtés, dans un levier (14).
  4. Dispositif de mouillage selon les revendications 1 et 2, caractérisé en ce que seuls le premier rouleau mouilleur (7) et le deuxième rouleau mouilleur (9) ainsi que le rouleau applicateur d'agent mouillant (23) sont logés ensemble, sur leurs deux côtés, dans un levier commun (43).
  5. Dispositif de mouillage selon les revendications 1, 2 et 4, caractérisé en ce que l'axe (19) du troisième rouleau mouilleur (17) est logé dans deux leviers pivotants (44), et en ce que l'axe (19) est monté avec une possibilité de réglage au moyen des leviers (44) par rapport à l'axe (27) du rouleau applicateur d'agent mouillant (23).
  6. Dispositif de mouillage selon les revendications 1, 2 et 3, caractérisé en ce que l'axe (19) du troisième rouleau mouilleur (17) est monté avec une possibilité de déplacement dans le logement (28) du levier (14).
  7. Dispositif de mouillage selon les revendications 1 et 5, caractérisé en ce que le premier rouleau mouilleur (7) et le deuxième rouleau mouilleur (9) ainsi que le rouleau applicateur d'agent mouillant (23) sont logés ensemble, sur leurs deux côtés, dans un levier (43), en ce que l'axe (19) du troisième rouleau mouilleur (17) est logé dans deux leviers pivotants (44) articulés aux leviers (43), et en ce que cet axe (19) est monté avec une possibilité de réglage au moyen des leviers de réglage (44) par rapport au rouleau applicateur d'agent mouillant (23).
  8. Dispositif de mouillage selon les revendications 1 à 3 et 6, caractérisé en ce que l'axe (12, 27) du deuxième rouleau mouilleur (9) et celui du rouleau applicateur d'agent mouillant (23) sont disposés avec une possibilité de réglage excentrique.
  9. Dispositif de mouillage selon les revendications 1, 2, 4, 5 et 7, caractérisé en ce que l'axe (12) du deuxième rouleau mouilleur (9) possède une possibilité de réglage excentrique, et l'axe (27) du rouleau applicateur d'agent mouillant (23) est monté de manière centrée.
  10. Dispositif de mouillage selon les revendications 1 à 3, 6 et 8, caractérisé en ce que l'axe (19) comporte, sur chacun des deux côtés du troisième rouleau mouilleur (17), des taraudages (37) parallèles l'un à l'autre, en ce que, dans chaque taraudage (37), est disposée une douille de réglage (38) et une contre-vis (41) qui y est logée en position coaxiale, en ce que la contre-vis (41) crée une liaison vissée avec le levier (14), et en ce que la douille de réglage (38) prend appui sur le fond (39) du logement (28).
  11. Dispositif de mouillage selon les revendications 1 à 10, caractérisé en ce que le troisième rouleau mouilleur (17) comporte un revêtement en polyamide comme matériau dur propice à l'encre.
  12. Dispositif de mouillage selon les revendications 1 à 11, caractérisé en ce que le revêtement en polyamide du troisième rouleau mouilleur (17) possède une dureté d'environ 90 degrés Shore D.
  13. Dispositif de mouillage selon les revendications 1 à 10, caractérisé en ce que le revêtement en caoutchouc du deuxième rouleau mouilleur (9) et du rouleau applicateur d'agent mouillant (23) possède une dureté d'environ 30 à 40 degrés Shore A.
  14. Dispositif de mouillage selon la revendication 1 à 13, caractérisé en ce que ce dispositif de mouillage est un dispositif de mouillage par pulvérisation.
  15. Dispositif de mouillage selon les revendications 1 et 14, caractérisé en ce que le dispositif de mouillage par pulvérisation prévu est conçu sous la forme d'un dispositif de mouillage à brosses.
EP91101100A 1990-02-05 1991-01-29 Dispositif de mouillage Expired - Lifetime EP0441220B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4003412 1990-02-05
DE4003412A DE4003412A1 (de) 1990-02-05 1990-02-05 Buerstenfeuchtwerk

Publications (3)

Publication Number Publication Date
EP0441220A2 EP0441220A2 (fr) 1991-08-14
EP0441220A3 EP0441220A3 (en) 1991-10-23
EP0441220B1 true EP0441220B1 (fr) 1996-01-03

Family

ID=6399480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101100A Expired - Lifetime EP0441220B1 (fr) 1990-02-05 1991-01-29 Dispositif de mouillage

Country Status (5)

Country Link
US (1) US5123346A (fr)
EP (1) EP0441220B1 (fr)
JP (1) JPH0542655A (fr)
DE (2) DE4003412A1 (fr)
RU (1) RU1804396C (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69820386T2 (de) * 1997-10-22 2004-09-16 Baldwin-Japan Ltd. Verfahren und Vorrichtung zur Feuchtwasserversorgung
FR2818190B1 (fr) * 2000-12-14 2003-03-07 Jean Lucien Sarda Procede permettant d'elargir le mode de fonctionnement des groupes de mouillage conventionnels des presses a imprimer offset
NL1022048C2 (nl) * 2002-12-02 2004-06-03 Mps Holding B V Drukmodule alsmede een drukmachine voorzien van een dergelijke drukmodule.
US6796228B2 (en) * 2002-12-27 2004-09-28 Day International, Inc. Dampener metering device
DE102005015791B4 (de) 2004-05-03 2023-10-26 Heidelberger Druckmaschinen Ag Verfahren zur Walzenjustage in einer Druckmaschine
EP1833674B1 (fr) 2005-01-05 2011-01-05 Koenig & Bauer Aktiengesellschaft Unité d'impression d'une presse d'impression pourvue d'au moins un mécanisme d'encrage et d'au moins un mécanisme mouilleur
DE102005000789A1 (de) * 2005-01-05 2006-07-13 Koenig & Bauer Ag Vorrichtung einer Druckmaschine bestehend aus einem Formzylinder und einem dem Formzylinder zugeordneten Feuchtwerk
US10016777B2 (en) * 2013-10-29 2018-07-10 Palo Alto Research Center Incorporated Methods and systems for creating aerosols
US12533688B2 (en) 2022-01-27 2026-01-27 Xerox Corporation System and method of atomizing reactive two-part fluids

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Publication number Priority date Publication date Assignee Title
US3096710A (en) * 1959-11-09 1963-07-09 Harris Intertype Corp Dampening device for lithographic printing press
GB1138055A (en) * 1966-09-03 1968-12-27 Baker Perkins Ltd Improvements in rotary offset printing units
US3508486A (en) * 1967-06-30 1970-04-28 Joe Polich Compressing machine
CH509156A (de) * 1969-08-09 1971-06-30 Roland Offsetmaschf Feuchteinrichtung für lithographische Druckmaschinen
DE2054678C3 (de) * 1970-11-06 1975-05-22 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Feuchtwerk für lithographische Druckmaschinen
CA937452A (en) * 1971-07-13 1973-11-27 Addressograph-Multigraph Corporation Cylinder conversion of printing masters
US3902417A (en) * 1972-04-29 1975-09-02 Maschf Augsburg Nuernberg Ag Wetting system for rotary offset printing presses
DE7814099U1 (de) * 1978-05-10 1979-05-31 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Feuchteinrichtung fuer eine druckmaschine
DE2845932A1 (de) * 1978-10-21 1980-04-24 Heidelberger Druckmasch Ag Kombiniertes feucht-farbwerk fuer offsetdruckwerke
DE2909765A1 (de) * 1979-03-13 1980-09-18 Maschf Augsburg Nuernberg Ag Feuchtwerk
JPS5874358A (ja) * 1981-10-30 1983-05-04 Mitsubishi Heavy Ind Ltd オフセツト印刷機の湿し装置
DE3146223C2 (de) * 1981-11-21 1985-03-21 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Feucht-Farbwerk für Offsetdruckmaschinen
DE3336875A1 (de) * 1983-10-11 1985-04-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum befeuchten von druckplatten in rotationsdruckmaschinen
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CA1240203A (fr) * 1986-10-09 1988-08-09 Thistle (Robert E.) Limited Systeme de mouillage de presse a imprimer
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DE3826222A1 (de) * 1988-08-02 1990-02-15 Roland Man Druckmasch Feuchtwerk
US5042377A (en) * 1989-09-19 1991-08-27 Palecek Frank H Automatic dampening system for lithographic printing press
US5046418A (en) * 1990-02-23 1991-09-10 Dahlgren International, Inc. Dampening method and apparatus for automatic ink/water control for lithographic printing press

Also Published As

Publication number Publication date
JPH0542655A (ja) 1993-02-23
DE4003412A1 (de) 1991-08-08
DE4003412C2 (fr) 1992-07-09
EP0441220A2 (fr) 1991-08-14
EP0441220A3 (en) 1991-10-23
US5123346A (en) 1992-06-23
DE59107177D1 (de) 1996-02-15
RU1804396C (ru) 1993-03-23

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