EP3720717B1 - Verarbeitungsmaschine mit einem werk mit einem vorratsbehälter und verfahren zum betreiben eines vorratsbehälters - Google Patents

Verarbeitungsmaschine mit einem werk mit einem vorratsbehälter und verfahren zum betreiben eines vorratsbehälters Download PDF

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Publication number
EP3720717B1
EP3720717B1 EP18819056.5A EP18819056A EP3720717B1 EP 3720717 B1 EP3720717 B1 EP 3720717B1 EP 18819056 A EP18819056 A EP 18819056A EP 3720717 B1 EP3720717 B1 EP 3720717B1
Authority
EP
European Patent Office
Prior art keywords
ink
compressed gas
slides
processing machine
end wall
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.)
Active
Application number
EP18819056.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3720717A1 (de
Inventor
Detlev Pforte
Lutz Halbach
Jan Teller
Peter Jentzsch
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 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 AG filed Critical Koenig and Bauer AG
Publication of EP3720717A1 publication Critical patent/EP3720717A1/de
Application granted granted Critical
Publication of EP3720717B1 publication Critical patent/EP3720717B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/047—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades provided with end dams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F22/00—Means preventing smudging of machine parts or printed articles
    • 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
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B41F31/05—Positioning devices therefor
    • 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
    • B41F31/06—Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/066—Enclosures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/068—End seals between cylinder and housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/08—Wiping mechanisms
    • B41F9/10—Doctors, scrapers, or like devices
    • B41F9/1063—Seals between blades and cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/08—Wiping mechanisms
    • B41F9/10—Doctors, scrapers, or like devices
    • B41F9/1072—Blade construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2231/00—Inking devices; Recovering printing ink
    • B41P2231/12—Axially segmented ink blades

Definitions

  • the invention relates to a processing machine, in particular a printing machine, with a work with a storage container and a method for operating a storage container in a work of a processing machine, in particular a printing machine.
  • An ink fountain conventionally comprises a ductor roller and an ink fountain base, which delimit an ink chamber that is filled with ink, in particular UV printing ink, during operation.
  • an ink fountain base along a lower edge of the ink fountain base, several paint slides are arranged in a row, which together with the ductor roller on the ink fountain arch of the ink chamber form a gap through which color is conveyed out of the ink chamber by rotating the ductor roller.
  • the distance between the paint slider and the ductor roller determines the thickness of the paint layer conveyed out of the paint chamber. This distance can be adjusted individually for each paint slider, so that a paint layer of variable thickness is obtained.
  • the paint slides are in direct contact with the paint in the paint chamber and must be movable relative to one another, there is the possibility that paint will penetrate into a gap between a side part and a paint slide or between two paint slides and make it more difficult to clean the paint fountain when changing the color or even hinders the adjustment of the color sliders.
  • the paint sliders are currently greased during assembly so that grease in the gaps between the side panels and paint sliders and between the paint sliders blocks the path of the paint. Since the fat turns into the color over time, regular greasing is necessary.
  • a sealing element for a doctor chamber of a flexographic printing machine wherein a sealing surface resting on a roller body has a flow outlet opening at which an excess pressure of a fluid can be built up during operation of the machine in such a way that the fluid forms a sealing flow film between the sealing surface and the roller body.
  • an ink fountain for a printing press with a flexible ink knife is known, a pneumatically actuated body extending along the ink knife being attached below the ink knife and a force counteracting the pneumatic pressure being able to be generated locally via individually adjustable elements.
  • DE 102007003943 discloses a printing press with a printing unit comprising an ink fountain.
  • the invention is based on the object of creating alternative processing machines with a work or an alternative method for operating a storage container in a work, in particular a printing work, of a processing machine.
  • the invention has the advantage that an alternative processing machine, in particular printing machine, with a work with a storage container or an alternative method for operating a storage container in a work, in particular printing work, is provided.
  • a processing machine in particular a sheet-fed and/or offset printing machine, with a corresponding work, in particular a printing unit, is provided.
  • a storage container can be designed as an ink fountain, which includes a ductor roller 01, side walls and an ink fountain base 03, which together delimit an ink chamber 04 for printing ink, in particular UV printing ink, which is open at the top.
  • a cover or something similar can also be provided over the ink fountain.
  • the machine preferably has a dryer for the printing ink applied to the substrate, in particular printing material, for example sheets or webs of paper, film or the like.
  • UV dryers or UV intermediate dryers are provided in the machine for drying or curing the preferred UV printing ink.
  • an ink exit gap 13 is formed for the printing ink, through which the printing ink, for example via a roller mill in the printing unit, is formed into a form or Plate cylinder is conveyed.
  • the printing ink for example via a roller mill in the printing unit
  • a form or Plate cylinder is conveyed.
  • approximately thirty-five color slides 06 can be placed side by side in one Rows can be arranged so that a corresponding number of individually controllable color zones are formed.
  • more color slides 06 for example up to forty-nine or more color slides 06, can be used.
  • the Fig. 1 shows, for example, an ink fountain for a printing press, in particular a sheet-fed printing press, for example as described above, comprising a ductor roller 01, which is one to the plane of the Figures 1 and 2 vertical axis 02 is rotationally driven in a clockwise direction, and an ink fountain base 03 which slopes towards the ductor roller 01.
  • the ductor roller 01 and ink fountain base 03 form the long sides of an ink chamber 04. End faces of the ink chamber 04 are formed by end walls 05, the cutting plane II extends in one of these end walls 05 - II the Figure 2 .
  • the end walls 05, the ink fountain bottom 03 and/or ink slider 06 of the ink fountain can be in direct contact with the printing ink, in particular UV printing ink.
  • the printing ink in particular UV printing ink.
  • one or more or all of these elements can be in direct contact with the paint in the paint fountain, for example via a film or the like.
  • At least one and in particular several ink slides 06 are preferably arranged in a row along the lower edge of the ink fountain base 03 facing the ductor roller 01.
  • the paint slides 06 for example, each have an approximately cuboid-shaped head 07 with an end face that tapers obliquely towards the ductor roller 01 and two flanks 08 oriented perpendicular to the axis 02 (see Figure 3 ) and a shaft 09 extending radially from the axis 02.
  • the heads 07 of the paint slides 06 are accommodated, for example, in a groove 10 extending in the direction of the axis 02 at the lower edge of the ink fountain base 03; the diameter of the shafts 09 is smaller than that Distance between the flanks 08 of a head 07, the shafts 09 run in bores 11 which extend radially away from the axis 02 from the bottom of the channel 10.
  • each head 07 is in direct contact with the paint of the ink chamber 04.
  • An edge of this end face facing the ductor roller 01 is preferably formed by a strip 12 made of wear-resistant material such as hard metal.
  • the width of an ink exit gap 13 between the bar 12 and the ductor roller 01 is a few 10 ⁇ m.
  • a spring 14 is accommodated in the bore 11, which exerts a force directed away from the axis 02 on the paint slide 06 and holds the paint slide 06 in a stop against an adjusting device 16.
  • the spring 14 can in particular be a helical spring which extends around the shaft 09 and is clamped between a shoulder of the bore 11 and a snap ring 15 placed on the shaft 09.
  • the adjusting device 16 of each ink slider 06 can be actuated independently of the other adjusting devices 16 in order to be able to control the width of the ink exit gap 13 zone by zone.
  • the adjusting device 16 comprises a pin 18 which can be rotated eccentrically about an axis 17 parallel to the axis 02 and which engages in a fork 19 at the end of the shaft 09 opposite the head 07.
  • the adjusting device 16 can also transmit an adjusting movement to the paint slider 06 in another way, for example via a contoured surface.
  • an adjusting device 16 can shift or pivot a paint slide 06 about a pivot axis arranged parallel to the axis 02 or rotation axis of the ductor roller 01.
  • a bore 20 extends through the heads 07 of the paint slides 06 parallel to the axis 02 or rotation axis of the ductor roller 01.
  • the diameter of the bore 20 can be larger than the freedom of adjustment of the paint slides 06 in order to ensure that in every position the paint slides 06 can take relative to each other, their holes 20 overlap.
  • the bores 20 also overlap with an axial bore 21 in at least one end wall 05.
  • This axial bore 21 communicates with one in the sectional plane of the Figure 2 extending bore 22.
  • the bore 22 ends here, for example, at a pneumatic plug connector 23 on an edge of the end wall 05 facing away from the axis 02.
  • the bores 20, 21, 22 together form a compressed gas line.
  • the connector 23 is provided for connecting a source of compressed air, such as a compressor, via a complementary connector 24.
  • the pneumatic connection can also be made elsewhere or with appropriately suitable connections.
  • the compressed air source can, for example, provide a pressure of at least approximately two bar at the ink fountain.
  • the flanks 08 of the paint slides 06 and the insides of the end walls 05 opposite a paint slide 06 are preferably polished in order to reduce the width of gaps 25 between the heads 07 and between an end wall 05 and the head 07 adjacent to it, and thus the inclination of the paint the ink chamber 04 to penetrate into the column 25 to minimize.
  • it cannot be completely suppressed in this way, since capillary forces promote penetration into the gap 25.
  • an air flow directed radially outwards from the bores 20 is maintained in the gaps 25, which creates an excess pressure in the gaps 25 that counteracts the penetration of the paint.
  • the air flow emerging in the gap 25 can also be directed or at least partially limited, in particular by shaping the head 07.
  • the end walls 05 each have a concave edge 26 that acts as a sealing surface and is opposite the lateral surface of the ductor roller 01.
  • a gap 27 between this edge 26 and the lateral surface should be as narrow as possible in order to prevent the paint from penetrating into the gap 27.
  • a tap hole 28 extends between this edge 26 and the hole 22 within the end wall 05, via which compressed air is also supplied to the gap 27. Since the rotation of the ductor roller 01 promotes the spread of air in the gap 27 in the direction of rotation, a starting point 29 of the tap hole 28 can be located at an upper end of the edge 26.
  • a groove 30 extending in the circumferential direction can be provided on the edge 26 in order to promote the distribution of the compressed air along the edge 26 and to keep the gap 27 free, particularly near its lower end, at a large distance from the starting point 29 of the tap hole 28 to keep color.
  • both can be provided with identical bores 21, 22, 28.
  • the axial bore 21 extends from one main surface of the end wall 05 to the other and is provided with a closure 31 at its end facing away from the paint slides 06.
  • the bores 20 of the paint slide 06 can also be pressurized with compressed air from both sides. This may be necessary in the event that the bores 20 are so narrow or the overlap between them is so small that when supplied via only one end wall 05 in the bores 20 there is a noticeable drop in pressure over the length of the arrangement of paint slides 06 would occur to ensure an adequate supply of compressed air to all columns 25 and/or columns 27.
  • the air outflow from the bores 20 via the gap 25 or gap 27 should preferably be so small that no significant pressure drop occurs along the bores 20, not least in order to avoid air bubbles rising within the paint of the paint chamber 04, which, if they pass through the ink exit gap 13, this could lead to fluctuations in the ink layer thickness.
  • the gap 25 arranged between two end walls 05 and/or the gap 27 arranged between end walls 05 and ductor roller 01 can be dimensioned such that a pressure drop across the gaps 25, 27 is limited to a value, in particular 25%.
  • the Fig. 4 shows an embodiment of an end wall 05 of an ink fountain in a printing unit of a processing machine, in particular an offset printing machine, preferably a sheetfed offset rotary printing machine in aggregate and series construction, for example as described above.
  • the end wall 05 can, for example, be arranged on the operating side of the machine and limit the ink chamber 04 of the ink fountain.
  • the end wall 05 has a bore 22 which corresponds to a bore 21 supplying bores 20 of paint slides 06.
  • the bore 21 is here only arranged in the flank 08 of the end wall 05 facing the paint slides 06, and is sometimes not continuous.
  • a further bore, in particular a tap bore 28, is provided at an angle, in particular orthogonally, to the bore 22, which with a further bore has a starting point 29 for a groove 30 in the sealing surface facing the ductor roller 01, in particular the edge 26 facing the ductor roller 01 End wall 05 forms.
  • the groove 30 runs here in particular along the concave edge 26 of the end wall 05.
  • the starting point 29 is in particular arranged approximately centrally to the groove 30, so that the negative pressure from the starting point 29 is formed evenly along the groove 30.
  • the groove 30 can, for example, have a particularly uniform depth and/or width of approximately 3 mm.
  • the groove 30 can be designed at one end or preferably at both ends with a radius of curvature of, for example, 10 mm.
  • the hole forming the starting point 29 can be made in the end wall 05 at an angle of at least approximately 20° to the horizontal and/or have a diameter of at least approximately 3 mm.
  • the end wall 05 can have a further hole, as shown here in section AA.
  • This hole can be used additionally or alternatively for the pneumatic supply of the hole 22 in the end wall. If this hole is used for pneumatic supply, the inlet opening of the hole 22 is preferably closed. The entrance opening of the tap hole 28 shown in section BB is also closed when the machine is in operation.
  • the end wall 05 can have a further hole, as shown here in section AA.
  • This hole can be used additionally or alternatively for the pneumatic supply of the hole 22 in the end wall. If this hole is used for pneumatic supply, the inlet opening of the hole 22 is preferably closed. The entrance opening of the tap hole 28 shown in section BB is also closed when the machine is in operation.
  • the two end walls 05 can each be located laterally, for example Connect the ink fountain base 03 and thereby form the ink chamber 04, which is open at the top, with the ink fountain base 03 and the ductor roller 01, in which the medium, in particular the printing ink, especially UV printing ink, is held.
  • the ink fountain preferably comprises exactly the two end walls 05, which are in particular designed in one piece or in one piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP18819056.5A 2017-12-07 2018-12-07 Verarbeitungsmaschine mit einem werk mit einem vorratsbehälter und verfahren zum betreiben eines vorratsbehälters Active EP3720717B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017222158.5A DE102017222158A1 (de) 2017-12-07 2017-12-07 Farbkasten und Verfahren zum Betreiben eines Farbkastens
PCT/EP2018/083986 WO2019110807A1 (de) 2017-12-07 2018-12-07 Verarbeitungsmaschine mit einem werk mit einem vorratsbehälter und verfahren zum betreiben eines vorratsbehälters

Publications (2)

Publication Number Publication Date
EP3720717A1 EP3720717A1 (de) 2020-10-14
EP3720717B1 true EP3720717B1 (de) 2023-10-18

Family

ID=64664747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18819056.5A Active EP3720717B1 (de) 2017-12-07 2018-12-07 Verarbeitungsmaschine mit einem werk mit einem vorratsbehälter und verfahren zum betreiben eines vorratsbehälters

Country Status (6)

Country Link
US (1) US11123978B2 (zh)
EP (1) EP3720717B1 (zh)
JP (1) JP6869437B2 (zh)
CN (1) CN111448074B (zh)
DE (1) DE102017222158A1 (zh)
WO (1) WO2019110807A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022121229A1 (de) 2022-08-23 2024-02-29 Koenig & Bauer Ag Farbwerk mit einer Schmiermittelzufuhr und Verfahren zum Abdichten einer Farbwanne

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887050A (en) * 1957-07-11 1959-05-19 Samuel M Langston Co Flexographic ink fountains
US3032007A (en) * 1959-05-01 1962-05-01 Francis W Mccauliff Coating head dike
DE1269138B (de) 1961-02-23 1968-05-30 Koppers Co Inc Farbkasten fuer eine Druckmaschine mit einem biegsamen Farbmesser
US3186339A (en) * 1963-07-17 1965-06-01 Flynn & Emrich Company Fluid operated fountain blade
FR1416866A (fr) * 1964-12-08 1965-11-05 Koppers Co Inc Perfectionnements apportés à des bains d'encre pour machines d'imprimerie
DE1961033A1 (de) 1969-12-05 1971-10-07 Maschf Augsburg Nuernberg Ag Dichtvorrichtung an Farbwalzen fuer Druckmaschinen
US4165688A (en) 1977-04-14 1979-08-28 Magna-Graphics Corporation Ink dam for printing press
US4434194A (en) * 1982-02-22 1984-02-28 Consolidated Papers, Inc. Edge dam for paper coating apparatus and method
DE3241124A1 (de) 1982-11-06 1984-05-10 Koenig & Bauer AG, 8700 Würzburg Farbabteilkeil in einem farbkasten einer rotationsdruckmaschine
DE3605613A1 (de) * 1986-02-21 1987-08-27 Jagenberg Ag Streichvorrichtung zum beschichten von warenbahnen
US4773327A (en) * 1987-04-09 1988-09-27 Am International Ink metering blade
US4854234A (en) * 1988-04-04 1989-08-08 Harris Graphics Corporation Ink fountain closure system
DE8817107U1 (de) * 1988-12-28 1992-10-01 Maschinenfabrik Wifag, Bern Dosiermesser zum zonenweisen Dosieren eines Farbfilms
US5461979A (en) * 1992-10-19 1995-10-31 Bruni Ag Grafische Maschinen Multiple blade ink knife
DE4330047C2 (de) * 1993-09-06 1997-02-06 Gizeh Werk Gmbh Farbwerk zur Zufuhr einer pastenförmigen Druckfarbe
DE19623349A1 (de) * 1996-06-12 1997-12-18 Baldwin Gegenheimer Gmbh Temperierte Flüssigkeits-Übertragungsvorrichtung der graphischen Industrie
DE19928880A1 (de) * 1998-07-06 2000-01-13 Heidelberger Druckmasch Ag Farbkasten in einer Druckmaschine
US6675706B2 (en) * 2001-01-19 2004-01-13 Dean A. Barker Dampening assembly having air seal apparatus for sealing dampening solution
DE102007003943A1 (de) * 2007-01-26 2008-07-31 Koenig & Bauer Aktiengesellschaft Farbbehälter zum Bereitstellen von Druckfarbe in Druckwerken von Druckmaschinen
DE102007025166A1 (de) * 2007-05-29 2009-01-22 Kba-Metronic Ag Steuerbare Rakelmesser
DE102012012089A1 (de) * 2011-07-06 2013-01-10 Heidelberger Druckmaschinen Ag Verfahren zum Betreiben eines Anilox-Druckwerksund Druckmaschine mit einem Anilox-Druckwerk
ES2721054T3 (es) 2016-01-14 2019-07-26 Windmoeller & Hoelscher Elemento de sellado para el sellado frontal de una cámara de rasqueta

Also Published As

Publication number Publication date
JP2021505442A (ja) 2021-02-18
US11123978B2 (en) 2021-09-21
EP3720717A1 (de) 2020-10-14
CN111448074B (zh) 2021-07-13
WO2019110807A1 (de) 2019-06-13
CN111448074A (zh) 2020-07-24
DE102017222158A1 (de) 2019-06-13
JP6869437B2 (ja) 2021-05-12
US20200376828A1 (en) 2020-12-03

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