EP0841163B1 - Auftragswerk in einer Rotationsdruckmaschine - Google Patents
Auftragswerk in einer Rotationsdruckmaschine Download PDFInfo
- Publication number
- EP0841163B1 EP0841163B1 EP97119022A EP97119022A EP0841163B1 EP 0841163 B1 EP0841163 B1 EP 0841163B1 EP 97119022 A EP97119022 A EP 97119022A EP 97119022 A EP97119022 A EP 97119022A EP 0841163 B1 EP0841163 B1 EP 0841163B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- unit
- anilox roller
- raster
- applicator
- 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
Links
- 238000007639 printing Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 230000008929 regeneration Effects 0.000 claims abstract description 13
- 238000011069 regeneration method Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 12
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 238000004506 ultrasonic cleaning Methods 0.000 abstract description 2
- 239000000284 extract Substances 0.000 abstract 1
- 238000007774 anilox coating Methods 0.000 description 40
- 239000006185 dispersion Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000002966 varnish Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/027—Ink rail devices for inking ink rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N7/00—Shells for rollers of printing machines
- B41N7/06—Shells for rollers of printing machines for inking rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/02—Top layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2235/00—Cleaning
- B41P2235/10—Cleaning characterised by the methods or devices
- B41P2235/14—Cleaning characterised by the methods or devices using ultrasonic energy
Definitions
- the invention relates to a commissioned work in a rotary printing press according to the preamble of the main claim.
- An application unit of this type with an anilox roller, also called a cup roller, is from the DE 39 38 449 C2 known, the anilox roller on the cylinder or roller core one has porous, volume-changing intermediate layer. There is one on this intermediate layer Layer with temperature-dependent shape memory arranged. This training serves the Changing the dosing amount of color as the liquid medium used by in the Layer under thermal influence changes the shape of the cells or completely eliminates them becomes.
- a well roller in an application unit is also known, whose main body is a concentrically arranged layer made of a piezoelectric Material carries and on the in turn an electrically conductive surface layer is arranged concentrically.
- the basic body and surface layer are circuitry-related connected to an adjustable voltage source. By switching on a voltage is using the electrostriction or the inverse piezoelectric effect causes compression or dilation of the well volume.
- the listed anilox rollers have changeable cups in their receiving volume.
- a further anilox roller is known as a metering roller, which has an anilox structure on a steel core with a first coating (oleophilic / hydrophobic material, eg copper) and a second outer coating in the form of a microporous ceramic.
- a disadvantage of this embodiment is that the volume of the cells can no longer be changed.
- the grid created once by the production eg etching, engraving) is determined by the shape and size of the cells. This is disadvantageous when processing liquid media with different viscosities or certain chemical compositions.
- the metering quantity can only be changed by replacing the anilox rollers with a new anilox roller with a different structure or properties. However, changing the rollers is time-consuming because downtimes occur.
- EP-A-0 615 861 is a method for controlling the amount of printing ink for the Ink transfer from an anilox roller as well as to replace worn anilox rollers and Structure of a renewable anilox roller known.
- the depth of the depressions on the surface an anilox roller is dimensioned much larger, so that the volume of the Depressions larger than required.
- the difference to the desired volume of the wells The anilox roller is inserted or completely reducible if necessary removable filler balanced. This is to get out of contact with a Doctor knife wear on the surface (and thus on the recesses) of the Anilox roller can be compensated.
- the volume of the wells should be in remain essentially constant.
- the invention has for its object a commissioned work in a rotary printing press with an anilox roller with wells (depressions) and webs (elevations) so form that the amount of liquid medium to be absorbed can be influenced.
- the anilox roller is within a job in a rotary printing press in connection with a dosing system, e.g. a chamber oracle additional roller (two-roller mill), can be used. It allows the processing of liquid Media such as flexographic printing ink, pigment-containing effect printing ink and Dispersion varnish, with water-based media in particular being used.
- the Cups on the surface of the anilox roller can be closed with a filler, excess Filler can be scraped off and the cells are completely or partially in their receiving volume exposed.
- This anilox roller is used both in printing units and in further processing units for print finishing, e.g. Can be used in painting units. Possible, Downtimes due to roll changes are reduced because of an exchange of anilox rollers with a larger or smaller structure or other properties is.
- the last printing unit has two Subordinate orders that serve the inline finishing of substrates.
- the first application unit consists of a sheet-guiding cylinder 1, the a forme cylinder 2 is assigned.
- the forme cylinder 2 carries a flexible high-pressure plate and is preferably used to process dispersion varnish or flexographic printing ink watery base.
- An anilox roller 3 is assigned to the forme cylinder 2, which preferably consists of a ceramic.
- the anilox roller 3 has a variety in a known manner of cells 5 and webs 6 on which represent a basic grid 7.
- Anilox roller 3 is in contact with a metering system 4, which is a chambered doctor blade according to FIG.
- the chambered doctor blade can be swiveled (turned on and off) to the anilox roller in a self-aligning bearing 3 stored and in a known manner has a housing and doctor blades that are on the circumference support the anilox roller 3 on its webs 6.
- the doctor blades are formed by a negative working doctor blade and a positive closing doctor blade, based on a direction of rotation 12.
- the closing doctor blade is used to seal the Chamber of the housing and the working doctor blade meter the liquid medium to be applied, e.g. Dispersion varnish.
- the chambered doctor blade has a device as the metering system 4 to feed and drain the liquid medium, which are not described here should be.
- the anilox roller 3 has in its basic grid 7 preferably incorporated with laser technology Cups 5, the receiving volume of which by the maximum transferable amount defined size is set.
- a regeneration device 8 In the direction of rotation 12 of the anilox roller 3 are between forme cylinders 2 and dosing system 4 a regeneration device 8, an application device 9 and a removal device 10 arranged one after the other on the circumference of the anilox roller 3 Wells and webs 5, 6 assigned.
- the regeneration device 8 is preferably as Ultrasonic cleaning system or high pressure water cleaner trained and serves the regeneration the cup 5 to its maximum volume according to the specified Basic grid 7.
- the application device 9 has a one that runs across the width of the screen roller 3 Gap. Before and after the gap, scrapers are form-fitting with the webs 6 of the anilox roller 3 in contact.
- the application device 9 is used to fill the respective Cup 5 with a liquefiable substance 11.
- This substance 11 is preferably a Thermoplastic or a wax or contains liquefiable photopolymers.
- the scraper 10 serves to expose the wells sealed with the liquefiable substance 5, which takes place under the influence of thermal energy, in particular by means of a laser.
- the anilox roller 3 is assigned to the forme cylinder, which with another roll as a metering system 4 forms a two-roll mill.
- the two-roll mill receives the medium to be metered from above in a nip 14 and works according to the squeeze roller principle.
- the regeneration device 8, application device 9 and Removal device 10 are arranged analogously to Figure 1.
- a two-roll mill is again shown.
- the dosing system is 4 a scoop roller assigned to the anilox roller 3, which dips into a liquid container.
- the liquid container is used to hold dispersion varnish.
- the arrangement of the regeneration device 8, application device 9 and removal device 10 is again analogous to FIG. 1.
- the structure of the anilox roller 3 is shown in FIG.
- the basic grid 7 is due to the Web 6 and the well 5 (without filled substance 11) fixed.
- the substance brought in 11 fills a partial volume of the cells 5 and the remaining difference in height the webs 6 represent the scooping volume (receiving volume) of the anilox roller 3.
- the respective dosing system 4 receives the medium to be processed. In the embodiment according to FIG. 1, this takes place via lines in the housing of the chambered doctor blade.
- the medium is fed into the nip 14 and in embodiments according to FIG. 3 the medium is scooped out of a container and conveyed into the nip 14.
- the basic grid 7 of the anilox roller 3 is cleaned in a regeneration device 8 from the components of the liquid medium that may still be adhering to the cup 5, so that the anilox roller 3 is returned to its basic grid 7.
- the cups 5 are filled on the downstream application device 9 and at the same time the webs 6 are preferably wiped off by a doctor blade.
- the removal device 10 then follows in the direction of rotation of the anilox roller 3 and exposes the depth of the wells 5 to a predetermined value. For this purpose, part of the filled substance 11 is removed from the wells 5 again, so that the volumes of the wells 5 are limited in their absorption capacity.
- the anilox roller 3 reaches the metering system 4
- the medium to be processed is taken up in the exposed areas of the cells 5 and transferred to the forme cylinder 2 as drops 13.
- the second application is subordinate to the first application in the direction of sheet travel and is, for example, acc. Fig. 2 formed.
- the forme cylinder 2 carries a rubber blanket.
- An aqueous dispersion varnish is fed into the nip 14.
- the second application works for the full-surface coating of the substrate to be processed. Alternatively, the execution according to. Fig. 3 can be used.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Press Drives And Press Lines (AREA)
- Paper (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Centrifugal Separators (AREA)
Description
Nachteilig bei dieser Ausführung ist, daß das Volumen der Näpfchen nicht mehr veränderbar ist. Das durch die Herstellung (z.B. Ätzen, Gravieren) einmal erzeugte Raster ist auf Form und Größe der Näpfchen festgelegt. Dies ist bei Verarbeitung von flüssigen Medien mit unterschiedlicher Viskosität oder bestimmten chemischen Zusammensetzungen von Nachteil. Eine Veränderung der Dosiermenge ist abhängig vom zuverarbeitenden flüssigen Medium nur durch einen Austausch der Rasterwalzen durch eine neue Rasterwalze mit anderer Struktur bzw. anderen Eigenschaften möglich. Ein Walzentausch ist jedoch aufwendig, da Stillstandzeiten entstehen.
- Figur 1
- eine Kammerrakel in Kontakt mit der Rasterwalze,
- Figur 2
- ein Zweiwalzenwerk mit einer Rasterwalze als Auftragwalze,
- Figur 3
- eine Lackiereinheit mit einem eine Schöpfwalze aufnehmenden Zwei-Walzenwerk,
- Figur 4
- einen vergrößerten Ausschnitt einer Rasterwalzenstruktur.
Zum Dosieren des zu verarbeitenden flüssigen Mediums erhält das jeweilige Dosiersystem 4 das zu verarbeitende Medium zugeführt. Bei Ausführung gemäß Figur 1 erfolgt dies über Leitungen in des Gehäuse des Kammerrakels. Bei Ausführungen gemäß Figur 2 wird das Medium in den Walzenspalt 14 zugeführt und bei Ausführungen gemäß Figur 3 wird das Medium aus einem Behälter geschöpft und in den Walzenspalt 14 gefördert. Das einmal festgelegte Grundraster 7 der Rasterwalze 3 wird nach Kontakt mit dem Formzylinder 2 von dem in dem Näpfchen 5 möglicherweise noch anhaftenden Bestandteilen des flüssigen Mediums in einer Regenerationseinrichtung 8 gereinigt, so daß die Rasterwalze 3 auf ihr Grundraster 7 zurückgeführt wird. Während der Rotation der Rasterwalze 3 werden an der nachgeordneten Antragseinrichtung 9 die Näpfchen 5 befüllt und gleichzeitig werden die Stege 6 vorzugsweise durch ein Rakel abgestriffen. In Drehrichtung der Rasterwalze 3 folgt danach die Abtragseinrichtung 10, welche die Tiefe der Näpfchen 5 auf einen vorgestimmten Wert freilegt. Dazu wird ein Teil der befüllten Substanz 11 aus den Näpfchen 5 wieder entfernt, so daß die Volumina der Näpfchen 5 in ihrem Aufnamevermögen begrenzt sind. Erreicht die Rasterwalze 3 das Dosiersystem 4, so wird in den freigelegten Bereichen der Näpfchen 5 das zuverarbeitende Medium aufgenommen und als Tropfen 13 an den Formzylinder 2 übertragen.
Das zweite Auftragswerk ist in Bogenlaufrichtung dem ersten Auftragswerk nachgeordnet und ist z.B. gem. Fig. 2 ausgebildet. Der Formzylinder 2 trägt dabei ein Gummituch. In den Walzenspalt 14 wird ein wäßriger Dispersionslack zugeführt. Das zweite Auftragswerk dient der vollflächigen Lackierung des zu verarbeitenden Bedruckstoffes. Alternativ kann als zweites Auftragswerk auch die Ausführung gem. Fig. 3 verwendet werden.
- 1
- bogenführender Zylinder
- 2
- Formzylinder
- 3
- Rasterwalze
- 4
- Dosiersystem
- 5
- Näpfchen
- 6
- Steg
- 7
- Grundraster
- 8
- Regenerationseinrichtung
- 9
- Antragseinrichtung
- 10
- Abtrageinrichtung
- 11
- Substanz
- 12
- Drehrichtung
- 13
- Tropfen
- 14
- Walzenspalt
Claims (4)
- Auftragswerk in einer Rotationsdruckmaschine, enthaltend ein Dosiersystem (4) mit einer Rasterwalze (3), wobei die Rasterwalze (3) einen mit einem Grundraster (7) mit Näpfchen (5) und Stegen (6) versehenden und ein flüssiges Medium führenden, drehbaren Walzenkörper aufweist,
dadurch gekennzeichnet
daß in Drehrichtung (12) der Rasterwalze (3) vor dem Dosiersystem (4) eine Regenerationseinrichtung (8) und eine nachgeordnete Antragseinrichtung (9) mit wiederum nachgeordneter Abtragseinrichtung (10) angeordnet sind, wobei Näpfchen (5) der Rasterwalze (3) durch die Regenerationseinrichtung (8) auf das vollständige Näpfchenvolumen eines Grundrasters (7) regenerierbar und durch die Antragseinrichtung (9) mit einer verflüssigbaren Substanz (11) befüllbar sind und diese Substanz (11) durch die Abtragseinrichtung (10) vollständig oder teilweise aus den Näpfchen (5) entfernbar ist. - Auftragswerk nach Anspruch 1
dadurch gekennzeichnet
daß die Regenerationseinrichtung (8) eine Ultraschallreinigungsanlage oder ein Wasserhochdruckreiniger ist. - Auftragswerk nach Anspruch 1
dadurch gekennzeichnet
daß durch die Antragseinrichtung (9) die verflüssigbare Substanz (11) in Form von Thermoplast oder verflüssigbaren Fotopolymeren oder Wachs aufbringbar ist. - Auftragswerk nach Anspruch 1
dadurch gekennzeichnet
daß das Abtragen der versiegelten Substanz (11) aus den Näpfchen (5) mittels Laser erfolgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19645934A DE19645934A1 (de) | 1996-11-07 | 1996-11-07 | Rasterwalze innerhalb eines Auftragswerkes einer Rotationsdruckmaschine |
DE19645934 | 1996-11-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0841163A1 EP0841163A1 (de) | 1998-05-13 |
EP0841163B1 true EP0841163B1 (de) | 2001-06-20 |
Family
ID=7810933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97119022A Expired - Lifetime EP0841163B1 (de) | 1996-11-07 | 1997-10-31 | Auftragswerk in einer Rotationsdruckmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0841163B1 (de) |
AT (1) | ATE202317T1 (de) |
DE (2) | DE19645934A1 (de) |
DK (1) | DK0841163T3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19902957C2 (de) * | 1999-01-26 | 2003-05-28 | Roland Man Druckmasch | Dosiervorrichtung an einer Rotationsdruckmaschine |
DE29918488U1 (de) | 1999-10-20 | 1999-12-30 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Bogenrotationsdruckmaschine mit Druckeinheiten für den Mehrfarbendruck und wenigstens einer Beschichtungseinheit |
DE102006031682A1 (de) * | 2006-07-08 | 2008-01-10 | Man Roland Druckmaschinen Ag | Flexodruckrasterwalze und Flexodruckverfahren |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4601242A (en) * | 1985-02-04 | 1986-07-22 | Rockwell International Corporation | Copper and ceramic composite ink metering roller |
DE3822692C2 (de) * | 1988-07-05 | 1996-02-15 | Kochsmeier Hans Hermann | Rasterwalze in einem Auftragswerk einer Druckmaschine |
DE3837941A1 (de) * | 1988-11-09 | 1990-05-10 | Roland Man Druckmasch | Verfahren und vorrichtung zur herstellung einer tiefdruckform |
DE3938449A1 (de) * | 1989-11-18 | 1991-05-23 | Roland Man Druckmasch | Druckwerk |
SE468754B (sv) * | 1990-06-05 | 1993-03-15 | Bo Nilsson | Saett att vid flexo- och djuptryckmaskiner foerhindra uppkomst av gasbubblor i tryckfaerg |
US5121689A (en) * | 1991-03-27 | 1992-06-16 | Rockwell International Corporation | Ultrasonic ink metering for variable input control in keyless lithographic printing |
US5370052A (en) * | 1993-03-15 | 1994-12-06 | Man Roland Druckmaschinen Ag | Method of controlling the quantity of printing ink and reconditioning used anilox rollers |
DK83193A (da) * | 1993-07-09 | 1995-01-10 | Tresu A S Maskinfabriken | Fremgangsmåde og apparat til rensning af overfladen på en valse |
DE4408615C2 (de) * | 1994-03-15 | 1996-01-11 | Roland Man Druckmasch | Näpfchenwalze innerhalb eines Auftragswerks einer Rotationsdruckmaschine |
DE19526574C1 (de) * | 1995-07-20 | 1996-10-17 | Roland Man Druckmasch | Verfahren und Vorrichtung zum Waschen eines Formzylinders und einer zugeordneten Auftragwalze in einer Druckmaschine |
-
1996
- 1996-11-07 DE DE19645934A patent/DE19645934A1/de not_active Withdrawn
-
1997
- 1997-10-31 EP EP97119022A patent/EP0841163B1/de not_active Expired - Lifetime
- 1997-10-31 DK DK97119022T patent/DK0841163T3/da active
- 1997-10-31 AT AT97119022T patent/ATE202317T1/de not_active IP Right Cessation
- 1997-10-31 DE DE59703856T patent/DE59703856D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DK0841163T3 (da) | 2001-11-19 |
DE59703856D1 (de) | 2001-07-26 |
EP0841163A1 (de) | 1998-05-13 |
ATE202317T1 (de) | 2001-07-15 |
DE19645934A1 (de) | 1998-05-14 |
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