EP0441220A2 - Dispositif de mouillage - Google Patents

Dispositif de mouillage Download PDF

Info

Publication number
EP0441220A2
EP0441220A2 EP91101100A EP91101100A EP0441220A2 EP 0441220 A2 EP0441220 A2 EP 0441220A2 EP 91101100 A EP91101100 A EP 91101100A EP 91101100 A EP91101100 A EP 91101100A EP 0441220 A2 EP0441220 A2 EP 0441220A2
Authority
EP
European Patent Office
Prior art keywords
dampening
roller
brush
axis
rollers
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
EP91101100A
Other languages
German (de)
English (en)
Other versions
EP0441220B1 (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
Koenig and Bauer 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, Koenig and Bauer 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

Links

Images

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 unit for offset printing machines, which contains a dampening solution spraying device which sprays the dampening solution onto a first roller with a dampening agent-friendly surface.
  • 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 object according to DE-OS 35 26 236 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 to loss of quality in Pressure leads.
  • 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-coated and a rubber-coated roller leads to the rapid destruction of the rubber roller in the event that the dampening unit should run dry.
  • a dampening system with a pure dampening roller is known. This receives the dampening solution from an upstream chrome roller which is in slip contact with a dampening roller which has a molton coating and is moistened by a first roller onto which the dampening solution is sprayed.
  • a disadvantage of the device according to DE-GM 78 14 099 is that the molton-coated roller provided for fountain solution transfer is very easily contaminated by transferred ink residues.
  • the slippage provided between the chrome roller and the molton roller leads to the destruction of the molton coating when the dampening unit runs dry.
  • the arrangement of the chrome roller in contact with the applicator roller means that the dampening solution can essentially only emulsify into the printing ink on the applicator roller.
  • the invention has for its object to provide a spray dampening unit with a pure dampening roller, which can also be used as a rewetting unit and which should have at least three rollers connected in series with color-friendly surfaces.
  • 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 enable 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 agent transfer medium.
  • 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 (e.g. 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 an ink-friendly surface 24 (e.g. rubber, hardness approx. 30-40 ° Shore A), from which the dampening solution reaches a plate cylinder 26.
  • an ink-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 firmly seated 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 relative to the axis 12 of the dampening roller 9.
  • the levers 14 each have a receptacle 28, in which the axis 19 is laterally suspended.
  • 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 11. 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 in each case 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)
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 true EP0441220A2 (fr) 1991-08-14
EP0441220A3 EP0441220A3 (en) 1991-10-23
EP0441220B1 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

Family Cites Families (20)

* Cited by examiner, † Cited by third party
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
DE3526236A1 (de) * 1985-07-23 1987-01-29 Goebel Gmbh Maschf Feuchtwerk
US4741269A (en) * 1986-08-01 1988-05-03 Graphic Specialties, Inc. Dampening apparatus for printing press
CA1240203A (fr) * 1986-10-09 1988-08-09 Thistle (Robert E.) Limited Systeme de mouillage de presse a imprimer
DE8716847U1 (de) * 1987-12-22 1988-02-18 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Feucht-Farbwerk für Offset-Druckmaschinen
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
EP0441220B1 (fr) 1996-01-03
DE4003412C2 (fr) 1992-07-09
EP0441220A3 (en) 1991-10-23
US5123346A (en) 1992-06-23
DE59107177D1 (de) 1996-02-15
RU1804396C (ru) 1993-03-23

Similar Documents

Publication Publication Date Title
DE3116505A1 (de) "rotationsdruckmaschine"
DE3706602C2 (fr)
EP0441220B1 (fr) Dispositif de mouillage
EP0509414A1 (fr) Unité d'impression pour une presse rotative
DE19934395B4 (de) Farbwerk in einer Rotations-Offsetdruckmaschine mit einer Farbauftragswalze zur Verringerung des Perleffekts der Druckfarbe
DE3344777C1 (de) Feuchtmitteldosiervorrichtung für das Feuchtwerk einer Druckmaschine
EP1627738B1 (fr) Unité d'impression et unité d'encrage avec cylindres d'encrage et cylindres oscillants mus indépendamment
EP0518892A1 (fr) Mecanisme d'encrage court pour rotative.
EP0387486B1 (fr) Mécanisme d'entraînement pour le déplacement axial du premier ou bien du premier et du deuxième rouleau d'une paire de rouleaux réorientables dans des machines d'impression offset
DE4138730C1 (fr)
CH686821A5 (de) Farbwerk mit einendig gelagerter Rasterwalze sowie mit einendig gelagertem Formatzylinder.
DE2639898A1 (de) Farbwerk fuer druckmaschinen
EP1534522B1 (fr) Systemes d'encrage de machines d'impression rotative
DE3938447C2 (fr)
EP0774353B1 (fr) Machine d'impression offset
DE10362038A1 (de) Verfahren und Einrichtung zur Regelung der Anpresskraft einer Anpresswalze an eine Warenführungswalze
DE9017607U1 (de) Bürstenfeuchtwerk
DE3908045C1 (fr)
DE2259721C3 (de) Farbwerk für eine von Hochdruck auf Offsetdruck umrüstbare Rollen-Rotationsdruckmaschine
DE1536409A1 (de) Farbwerk fuer eine Druckmaschine
DE9208449U1 (de) Druckmaschine
DE8120473U1 (de) Auftragwalzenlagerung fuer druckmaschine
DE4101797A1 (de) Kurzfarbwerk fuer eine rollenrotationsdruckmaschine
DE2058840A1 (de) Druckwerk einer Tiefdruck-Rotationsmaschine
DD140227A1 (de) Verreibwalze in druckmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19920110

17Q First examination report despatched

Effective date: 19931014

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960105

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59107177

Country of ref document: DE

Date of ref document: 19960215

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010124

Year of fee payment: 11

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020130

EUG Se: european patent has lapsed

Ref document number: 91101100.5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050118

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20050120

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050124

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050129

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050329

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060801

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060129

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060929