EP0648604A1 - Dispositif de dosage d'un moyen liquide dans une machine d'impression offset en particulier un dispositif de laquage - Google Patents

Dispositif de dosage d'un moyen liquide dans une machine d'impression offset en particulier un dispositif de laquage Download PDF

Info

Publication number
EP0648604A1
EP0648604A1 EP94114401A EP94114401A EP0648604A1 EP 0648604 A1 EP0648604 A1 EP 0648604A1 EP 94114401 A EP94114401 A EP 94114401A EP 94114401 A EP94114401 A EP 94114401A EP 0648604 A1 EP0648604 A1 EP 0648604A1
Authority
EP
European Patent Office
Prior art keywords
roller
metering
forme cylinder
dosing
media
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.)
Ceased
Application number
EP94114401A
Other languages
German (de)
English (en)
Inventor
Georg Hartung
Manfred Herold
Ulrich Dr. Jung
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.)
Manroland AG
Original Assignee
MAN Roland 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0648604A1 publication Critical patent/EP0648604A1/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/08—Print finishing devices, e.g. for glossing prints

Definitions

  • the invention relates to a device for dosing liquid media of different viscosities in offset printing machines. It is preferably used for dosing liquid media for application to a substrate in coating units.
  • the device is suitable for processing low-viscosity media ( ⁇ 50s expiry time 4mm cup).
  • the medium to be applied is fed by means of a metering roller and applicator roller according to the squeeze roller principle, the liquid, e.g. Paint is fed through the roller nip thus formed by means of a tube over a paint wedge.
  • a chambered doctor blade is known from EP 0 071 180 A1, which is essentially formed by a housing with side walls and doctor blades attached to the housing, also called doctor blades.
  • the doctor blades are supported on the application roller and the liquid is transferred to the screened application roller via the chamber formed in this way.
  • the chambered doctor blade is pivotally mounted in a holder arranged above the application roller and can be adjusted to the application roller by a working cylinder acting on the holder.
  • an application unit for printing presses which is suitable for high and low viscosity media.
  • the metering is carried out essentially by means of a profiled scoop roller, doctor blade, transfer roller and smoothing roller or applicator roller and a form cylinder provided with a cup with a doctor blade.
  • the object of the invention is therefore to develop a solution which eliminates the disadvantages mentioned. This is solved by the characterizing part of claim 1. Further developments result from the subclaims.
  • the solution according to the invention consists of an interchangeable metering system, which is optionally used in accordance with the respective application. It allows the quick change of metering roller and chamber doctor blade in combination with the respective application roller.
  • the roller system consisting of applicator roller and metering roller with different surface hardness is used. Both rollers have the same outside diameter. Depending on the type of layer thickness desired on the forme cylinder, both rollers can alternately be used as application or metering rollers. The roller with the higher surface hardness transfers the smaller layer thickness to the forme cylinder according to the principle of ink splitting.
  • a chambered doctor blade and a screened application roller are used. The correct metering takes place through the negatively positioned doctor blade of the chamber doctor blade and the grid structure of the applicator roller. The metered quantity can be changed by replacing the screened application roller and using a roller with a modified screen structure.
  • the advantage of this solution is that the optional exchange of the dosing system ensures an exact layer thickness for media with a lower and higher viscosity range on the application roller used in each case.
  • Another advantage is that when processing low-viscosity media, the metering roller and the applicator roller are interchangeable. The different surface hardness allows a more variable dosing range (with low viscosity) even without using the chamber doctor blade.
  • the device can be the first printing unit of an offset printing machine for print finishing, e.g. Painting, top coat application, upstream, arranged between the printing units or arranged downstream of the printing units.
  • the solution according to the invention is suitable for spot painting (recessed painting) and for full-area painting.
  • a further finishing device can be arranged upstream or downstream of the device according to the invention, e.g. another painting unit for full-surface painting or a laminating or embossing device.
  • the device according to the invention is arranged downstream of the last printing unit in an offset printing press and is used for inline coating of printing materials.
  • the device consists of a sheet-guiding cylinder 1, which is associated with a forme cylinder 2 with attached transfer form.
  • This forme cylinder 2 is in contact with an application roller 3 on which the paint to be processed is metered.
  • the application roller 3 is in contact with a dosing roller 4.
  • Dosing roller 4 and application roller 3 have a feed tube for the lacquer to be processed above the nip 7. Both rollers 3, 4 have the same outer diameter, but a different surface hardness. So the application roller 3 is made with a harder surface, e.g.
  • the metering roller 4 is formed with a softer surface, e.g. with an elastomer cover.
  • the rollers 3, 4 are interchangeable, so that the softer metering roller 4 can also perform the function of the application roller and the harder application roller 3 takes over the function of the metering roller.
  • a smaller layer thickness is transferred to the forme cylinder 2 in accordance with the principle of ink splitting in the case of a harder application roller 3 and, when the softer metering roller 4 is used in the function of the application roller, a larger layer thickness is transferred to the forme cylinder 2, with a defined one Assistant.
  • application roller 3 and metering roller 4 are replaced by a rastered application roller 3 ', for example a ceramic roller, and a chamber doctor blade 5.
  • the chambered doctor blade 5 has a housing which is rotatably arranged on the pivot bearing 6 and is supported with the doctor blades 8, 9 on the circumference of the screened application roller 3 '.
  • the doctor blade 9 seals the chamber to the applicator roller 3 'as a positively positioned closing doctor 9 and the doctor blade 8 doses as a negative doctor blade 8.
  • the housing of the chamber doctor blade 5 is rotatably received on both sides in a swivel bearing 6 arranged on the side frames and for Applicator roller 3 'can be provided.
  • the chambered doctor blade 5 has a device for feeding and discharging the medium to be processed, which will not be described further here.
  • the mechanism works as follows: If a low-viscosity lacquer is to be processed, the metering roller 4 and the application roller 3 are assigned to the forme cylinder 2.
  • the application roller 3 with a greater surface hardness can have a smooth or screened surface, while the metering roller 4 is provided with a softer surface, an elastomer cover.
  • the low-viscosity lacquer to be processed is conveyed into the nip 7 via the feed line, so that a lacquer wedge forms.
  • the metering roller 4 can be added to the applicator roller 3. The metering takes place according to the squeeze roller principle and the application roller 3 conveys the lacquer to the forme cylinder 2, which transfers the lacquer to the printing material in connection with the impression cylinder 1.
  • the softer metering roller 4 can also take over the function of the application roller 3, since the two rollers 3, 4 are interchangeable.
  • the softer metering roller 4 then conveys more paint to the forme cylinder 2 than the harder applicator roller 3.
  • the rollers 3, 4 After the paint has passed through the nip 7, the rollers 3, 4 have different layer thicknesses at a defined supply force due to the different surface hardness and the ink splitting.
  • the application roller 3 bears the smaller layer thickness due to the harder cover.
  • the defined auxiliary force can be adjusted between the two rollers 3, 4 and enables the amount of lacquer to be metered to be adjusted flexibly.
  • the metering range can be extended to the forme cylinder 2.
  • the lacquer feed tube above the nip 7 is removed and the metering roller 4 and the application roller 3 are replaced by a chambered doctor blade and a screened application roller 3 '.
  • the chambered doctor blade 5 is received in a pivot bearing 6 each.
  • the paint is dosed now through the negatively positioned working doctor blade 8 and the grid structure of the application roller 3 '.
  • a change in the amount of paint that can be metered is possible by replacing the screened applicator roller 3 'by using a modified screen structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Printing Methods (AREA)
EP94114401A 1993-10-13 1994-09-14 Dispositif de dosage d'un moyen liquide dans une machine d'impression offset en particulier un dispositif de laquage Ceased EP0648604A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4334803 1993-10-13
DE4334803A DE4334803C1 (de) 1993-10-13 1993-10-13 Einrichtung zum Dosieren flüssiger Medien in Offsetdruckmaschinen, vorzugsweise für Lackiereinheiten

Publications (1)

Publication Number Publication Date
EP0648604A1 true EP0648604A1 (fr) 1995-04-19

Family

ID=6499994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114401A Ceased EP0648604A1 (fr) 1993-10-13 1994-09-14 Dispositif de dosage d'un moyen liquide dans une machine d'impression offset en particulier un dispositif de laquage

Country Status (4)

Country Link
US (1) US5517917A (fr)
EP (1) EP0648604A1 (fr)
JP (1) JPH07171950A (fr)
DE (1) DE4334803C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0903227A2 (fr) * 1997-08-07 1999-03-24 Kba-Planeta Ag Tour d'impression d'une machine à imprimer

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4344084C1 (de) * 1993-12-23 1995-03-02 Roland Man Druckmasch Vorrichtung zum Dosieren flüssiger Medien unterschiedlicher Viskosität in Offsetdruckmaschinen, vorzugsweise in Lackiereinheiten
DE19503695C2 (de) * 1995-02-04 1997-02-27 Roland Man Druckmasch Absicherung für eine Druckmaschine
DE19613117A1 (de) * 1996-04-02 1997-10-09 Kba Planeta Ag Auftragwerk für Druckmaschinen
DE29616686U1 (de) * 1996-09-25 1996-11-14 MAN Roland Druckmaschinen AG, 63075 Offenbach Einrichtung zum Beschichten von Bedruckstoffen mit einer Flüssigkeit
DE19643984B4 (de) * 1996-10-31 2005-01-05 Man Roland Druckmaschinen Ag Funktionssteuerung für eine Dosiereinrichtung
US6076462A (en) * 1996-12-21 2000-06-20 Koenig & Bauer Aktiengesellschaft Method for inking a cylinder with viscous ink using doctor blades
DE19819389B4 (de) * 1997-07-30 2008-11-13 Heidelberger Druckmaschinen Ag Lackierwerk für Rotationsdruckmaschinen
DE19913764A1 (de) * 1999-03-26 2000-10-05 Koenig & Bauer Ag Einrichtung zum Dosieren flüssiger Medien
JP2006007495A (ja) * 2004-06-23 2006-01-12 Miyakoshi Printing Machinery Co Ltd フレキソユニット
DE102009002228B4 (de) * 2009-04-06 2015-01-08 Koenig & Bauer Aktiengesellschaft Lackierwerk einer Rollen-Rotations-Offsetdruckmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345183B1 (de) * 1973-09-07 1974-08-01 Roland Offsetmaschf Einrichtung zum Lackieren od.dgl. an einer Druckmaschine
DE3906648A1 (de) * 1988-03-25 1989-10-05 Polygraph Leipzig Auftragwerk fuer druckmaschinen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240762A (en) * 1938-01-12 1941-05-06 Maschf Augsburg Nuernberg Ag Inking apparatus for aniline color printing machines
US2374096A (en) * 1941-11-28 1945-04-17 Us Envelope Co Inking device for aniline color printing
US4308796A (en) * 1979-07-13 1982-01-05 S-W-H, Ltd. Offset lithographic press with ink metering system for blanket cylinder
DE3135711A1 (de) * 1981-07-29 1983-02-10 Windmöller & Hölscher, 4540 Lengerich Spuelfarbwerk fuer eine rotationsdruckmaschine
DE3427898C1 (de) * 1984-07-28 1985-11-14 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Auftragen von Fluessigkeiten,insbesondere Lackiereinheit fuer eine Druckmaschine
JPS62256656A (ja) * 1986-04-30 1987-11-09 Sumitomo Heavy Ind Ltd 印刷物ニス塗布装置
US5003876A (en) * 1989-02-10 1991-04-02 The Ward Machinery Company Printing apparatus with dual inking system
US5081928A (en) * 1990-07-23 1992-01-21 Ward Holding Company, Inc. Multiple ink roll system for flexographic printing stations
US5176077A (en) * 1991-08-30 1993-01-05 Howard W. DeMoore Coating apparatus for sheet-fed, offset rotary printing presses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345183B1 (de) * 1973-09-07 1974-08-01 Roland Offsetmaschf Einrichtung zum Lackieren od.dgl. an einer Druckmaschine
DE3906648A1 (de) * 1988-03-25 1989-10-05 Polygraph Leipzig Auftragwerk fuer druckmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0903227A2 (fr) * 1997-08-07 1999-03-24 Kba-Planeta Ag Tour d'impression d'une machine à imprimer
EP0903227A3 (fr) * 1997-08-07 1999-07-07 Kba-Planeta Ag Tour d'impression d'une machine à imprimer

Also Published As

Publication number Publication date
US5517917A (en) 1996-05-21
JPH07171950A (ja) 1995-07-11
DE4334803C1 (de) 1994-11-03

Similar Documents

Publication Publication Date Title
EP0064270B1 (fr) Dispositif d'encrage
DE9305552U1 (de) Einrichtung zum Inline-Beschichten von Bedruckstoffen in Offsetdruckmaschinen
CH663577A5 (de) Zonenschraubenloses druckwerk insbesondere fuer rollenrotationsdruckmaschine fuer den zeitungs- und zeitschriftendruck und druckvorrichtung mit einem solchen druckwerk.
DE4334803C1 (de) Einrichtung zum Dosieren flüssiger Medien in Offsetdruckmaschinen, vorzugsweise für Lackiereinheiten
EP1117487B1 (fr) Machine a enduire permettant de faconner un materiau en feuilles
DE4311834C2 (de) Einrichtung zum Beschichten von Bedruckstoffen in Druckmaschinen
DE4324631C2 (de) Einrichtung zum Aufbringen flüssiger Medien auf einen Bedruckstoff in Offsetdruckmaschinen
DE3329331A1 (de) Druckwerk mit kurzem farbwerk
EP0659557B1 (fr) Dispositif de dosage d'un moyen liquide dans une machine d'impression offset en particulier un dispositif de laquage
EP1457332B1 (fr) Procédé d'utilisation d'un dispositif d'encrage court
DE60020252T2 (de) Verfahren zum betreiben einer druckeinheit und druckeinheit für eine offset-druckmaschine
EP0623465B1 (fr) Alimentation commutable de vernis-laque à unités de finition dans des machines d'impression rotatives
DE102007041756B4 (de) Farbkammer
EP1200261A1 (fr) Unite d'application de revetement, installee dans une machine a imprimer
DE10028477A1 (de) Vorrichtung zum Dosieren und zur Vergleichmäßigung einer Farbschicht auf der Oberfläche einer Druckmaschinenwalze
DE2639898A1 (de) Farbwerk fuer druckmaschinen
EP0924073B1 (fr) Dispositif doseur d'un liquide de couchage pour supports d'impression dans une machine à imprimer
DE102006030057B4 (de) Farbwerk einer Rotationsdruckmaschine
DE19529204C2 (de) Feuchtwerk für eine Offsetdruckmaschine
DE19729977C2 (de) Offsetdruckwerk zum Lackieren von Bedruckstoffen in einer Rotationsdruckmaschine
EP1389523B1 (fr) Machine à imprimer ou à enduire
EP0924074B1 (fr) Dispositif doseur d'un liquide de couchage pour supports d'impressions dans une machine à imprimer
DE102007001302B4 (de) Vorrichtung zur Beschichtung eines flächigen Trägerelementes mit einem fließfähigen Material
DE3127880A1 (de) "farbwerk"
EP0828612B1 (fr) Systeme d'encrage pour machines d'impression

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

17P Request for examination filed

Effective date: 19940930

AK Designated contracting states

Kind code of ref document: A1

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

17Q First examination report despatched

Effective date: 19960311

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19961115