EP2091737B1 - Procédé de nettoyage ainsi que dispositif de nettoyage pour une surface cylindrique d'une machine d'impression - Google Patents

Procédé de nettoyage ainsi que dispositif de nettoyage pour une surface cylindrique d'une machine d'impression Download PDF

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Publication number
EP2091737B1
EP2091737B1 EP07819868A EP07819868A EP2091737B1 EP 2091737 B1 EP2091737 B1 EP 2091737B1 EP 07819868 A EP07819868 A EP 07819868A EP 07819868 A EP07819868 A EP 07819868A EP 2091737 B1 EP2091737 B1 EP 2091737B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
cleaning fluid
converter
gas
spray bar
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.)
Not-in-force
Application number
EP07819868A
Other languages
German (de)
English (en)
Other versions
EP2091737A1 (fr
Inventor
Klaus Strobl
Dietger Hesekamp
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.)
Technotrans SE
Original Assignee
Technotrans SE
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 Technotrans SE filed Critical Technotrans SE
Publication of EP2091737A1 publication Critical patent/EP2091737A1/fr
Application granted granted Critical
Publication of EP2091737B1 publication Critical patent/EP2091737B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/06—Preparing for use and conserving printing surfaces by use of detergents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0884—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being aligned
    • 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
    • B41N3/00—Preparing for use and conserving printing surfaces
    • 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
    • B41P2235/26—Spraying devices

Definitions

  • the present invention relates to a cleaning device for cleaning a cylinder surface of a printing machine according to the preamble of claim 1, and to a corresponding cleaning method according to the preamble of claim 9.
  • Such a cleaning device and a corresponding cleaning method are, for example DE 10 2004 011 860 A1 known.
  • the cleaning fluid is, by the spray bar, which extends along the cylinder to be cleaned, sprayed directly onto the surface or on a cleaning cloth, which is then pressed against the surface.
  • the supply device deposits a volume of the cleaning fluid, which contains a detergent, such as a solvent or water, in an intermediate store and presses it, for example by means of compressed air, to the spray bar.
  • the DE 10 2004 011 860 A1 proposes for this purpose a transducer in the form of a nozzle or a mixer, which dissolves the watersfiuid into individual drops or thoroughly mixed. The cleaning fluid can then be blown evenly under pressure from the spray nozzles of the spray bar.
  • a nozzle for producing a homogeneous liquid-gas mixture is for example also made US 4,349,156 A known.
  • a compressed air flow is supplied to the fluid.
  • the publication DE 10 2004 011 861 A1 also proposes a venting of the spray bar, which is intended to cause a flow of excess air from the spray bar.
  • the publication EP 0 607 751 A further discloses a washing device for printing rollers for use in printing machines with a spray tube.
  • the tube comprises a plurality of spray nozzles for spraying the washing fluid onto the pressure rollers.
  • the washing fluid is supplied to the spray nozzles by means of a supply line.
  • the spray nozzles compressed air is supplied by means of a Heilrille.
  • the supply line and the air groove communicate with a vortex chamber. The washing fluid and the compressed air are mixed together in the vortex chamber before being discharged through the spray nozzles.
  • the publication US 2005/0189661 A1 discloses a spraying device for a printing press.
  • a liquid enters the spray device via a supply line. If a valve element is opened, the liquid can penetrate into an inner passage via an inlet opening, wherein the liquid passes through a gas inlet opening and air is sucked in by means of the Venturi effect.
  • the inner passage then expands, this section being used as a swirl chamber in which the liquid and air are mixed before the air-liquid mixture exits the spray device via a spray nozzle.
  • WO 95/01876 A1 an apparatus for cleaning a printing cylinder of a printing press.
  • the apparatus includes a boom on which a cleaning head is conveyed by means of a slider relative to the boom.
  • the cleaning head is provided with pipes connected thereto.
  • the pipes are used for the transport of compressed air from an external pressure source.
  • liquid is fed into the cleaning head via an antechamber in which a mixing of the compressed air and the liquid takes place.
  • the gas-liquid mixture is delivered to the surface of the pressure cylinder.
  • the publication DE 10 2004 011 860 A1 discloses a cleaning device for a cylinder or a roll of a printing press. Extending over the width of the cylinder or the roller, a cleaning fluid supplying spray tube, which is connected by at least one supply line with a supply system, which doses the cleaning fluid and fed by means of compressed air to the spray tube.
  • the spray tube is preceded by a cleaning fluid in a homogeneous liquid-air mixture converting converter.
  • GB 2 231 286 A a flat jet nozzle for atomizing a liquid.
  • the nozzle comprises a mixing head comprising a mixing chamber with two mutually perpendicular units for each of a gaseous and a liquid medium.
  • a tubular connector is secured coaxially with the mixing chamber.
  • a mouthpiece with a spray nozzle outlet is mounted at the lower end of the connector.
  • Object of the present invention is therefore to provide a cleaning device and a corresponding method of the type mentioned above, which improve the homogenization of the cleaning fluid and thus contribute to an improved spray pattern.
  • the inventive additional enrichment of the cleaning fluid with a gas such as air causes an increase in the gas content in the fluid, so that the homogenization is facilitated and a more uniform distribution of the same through the spray bar is possible. This makes it possible to manage with less washing liquid, since it is no longer necessary due to the uniform spreadability to adjust an overdose in order to prevent the above-described undersupply of surface areas with cleaning fluid.
  • the converter comprises a gas connection, through which the gas is fed into the cleaning fluid flowing through the converter.
  • This may be, for example, a simple ventilation opening.
  • the transducer is designed as an injector.
  • an injector the construction of which is known per se, comprises a continuous channel through which the cleaning fluid flows.
  • a suction port for air or other gas is provided at a bottleneck of this fluid channel. Due to the negative pressure created by the flow of the fluid at the bottleneck, the gas is sucked in and mixes with the cleaning fluid.
  • the transducer is designed as ejector.
  • gas is forced through a continuous gas channel in the ejector, which sucks through a suction channel, which opens into a bottleneck of the gas channel, the cleaning fluid, so that downstream of the junction with the gas enriched cleaning fluid flows and can be further promoted to the spray bar.
  • the transducer comprises a nozzle, preferably an atomizer nozzle, for atomizing the cleaning fluid.
  • a nozzle preferably an atomizer nozzle, for atomizing the cleaning fluid.
  • This may be a nozzle that dissolves the gas-enriched cleaning fluid into individual droplets.
  • the supply device may preferably be provided to feed the cleaning fluid into one end or into both ends of the spray bar.
  • the supply device serves to feed the cleaning fluid approximately in the longitudinal center of the spray bar.
  • the gas for enriching the cleaning fluid is air.
  • Fig. 1 shows a generally designated by the reference numeral 10 cleaning device for a cylinder surface, not shown, of a printing press.
  • the cleaning device 10 comprises a spray bar 12, which extends in the axial direction over the cylinder surface to be cleaned and has a number of spray nozzles 14. Through the spray nozzles 14, a cleaning fluid is sprayed onto the cylinder surface. Optionally, it is possible to spray the fluid on a cleaning cloth, which is then passed over the surface to be cleaned.
  • the cleaning fluid can be a detergent like about a solvent or water and a gas such as air, as will be explained in more detail below.
  • a supply means 16 For supplying the cleaning fluid to the spray bar 12 is a supply means 16. This comprises a supply line 18, a converter 20 and a downstream of the converter 20 arranged supply line 22 through which the cleaning fluid from the supply line 18 is fed to the spray bar 12 after it the converter 20th happened.
  • the feeding of the cleaning fluid takes place at an axial end of the spray bar 12, which in Fig. 1 is arranged on the left.
  • the conveying of the cleaning fluid in the direction of the spray bar 12 is done by acting on the supply line 18 with compressed air (in Fig. 1 indicated by an arrow on the left).
  • the compressed air source is not shown in the figures for the sake of simplicity, as well as other lines for filling the supply line 18 with a supply of cleaning fluid from appropriate sources, such as tanks for solvents, water, etc.
  • Corresponding devices of the cleaning device 10 may be configured similarly as in the document already mentioned in the introduction to the description DE 10 2004 011 860 A1 described.
  • the converter 20 opens laterally an air supply line 24 through which air is sucked into the transducer 20 and is mixed within the transducer 20 in the cleaning fluid, so that the funded in the direction of the spray bar 12 cleaning fluid is enriched with air.
  • a gas other than air In the context of the present invention it is also possible to use a gas other than air.
  • the converter 20 is designed as an injector.
  • a cleaning fluid channel 26 extends axially through the transducer 20, through which the cleaning fluid flows from the supply line 18 in the direction of the supply line 22 or the spray bar 12 (in FIG Fig. 2 left to right).
  • the cleaning fluid channel 26 comprises a constriction 28.
  • the channel 26 Downstream of the constriction 28, the channel 26 is expanded radially to an approximately cylindrical chamber 30. In this chamber 30 opens from the radial direction of the air port 32 of the air connection line 24. If the cleaning fluid flows through the channel 26, is at the bottleneck 28 due to the Increasing the flow rate generates a negative pressure in the chamber 30, through which air is sucked through the air port 32 from the air supply line 24 into the channel 26.
  • the cleaning fluid conveyed through the channel 26 is thus additionally admixed with air, that is to say the cleaning fluid, which usually already contains a certain proportion of air due to the compressed air delivery, is additionally enriched with air in order to facilitate the homogenization.
  • This air enrichment can of course also be carried out on a cleaning fluid that contains no air in the stored state in the supply line 18, but consists exclusively of a washing liquid, as may be the case for example in a pure pump delivery.
  • the cleaning fluid channel 26 Downstream of the chamber 30, the cleaning fluid channel 26 is formed as a nozzle 33, which serves to atomize the air-enriched cleaning fluid into fine droplets and to convert them into a homogeneous mixture of liquid and air.
  • This homogenized cleaning fluid is then passed through the in Fig. 2 Feed line 22, not shown, is fed to the spray bar 12 and ejected through the spray nozzles 14.
  • a spray nozzle 33 may also be provided a mixer which ensures a uniform mixing of the fluid.
  • transducer 20 and an ejector can be used.
  • compressed air is conveyed through an air channel which is arranged axially within the converter 20 and is arranged like the cleaning fluid channel 26. Downstream of a constriction of this compressed air channel opens laterally a cleaning fluid suction line into the compressed air channel, so that due to the negative pressure downstream of the bottleneck cleaning fluid is sucked in and the desired cleaning fluid mixture is formed, which is sufficiently offset with air.
  • the 3 and 4 relate to different embodiments and arrangements of the supply line to the spray bar 12.
  • the supply line 34 branches into two supply branch lines 36, 38, of which in each case a branch line 36, 38 opens into an axial end of the spray bar 12.
  • the spray bar 12 is So fed from its two ends with homogenized cleaning fluid.
  • a feed line 40 which does not open at one end, but at a location near the longitudinal center in the spray bar 12.
  • the converter 20 can also be actively ventilated via the air connection line 24, ie via a corresponding air or gas feed device at the end of the air connection line 24, which in the Fig. 1 . 3 and 4 is shown as open. Furthermore, it is possible to provide a plurality of lateral gas connections on the converter 20 instead of a single air connection 32.

Landscapes

  • Nozzles (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (9)

  1. Dispositif de nettoyage (10) pour le nettoyage d'une surface cylindrique d'une machine d'impression, comprenant :
    une barre d'aspersion (12) pour asperger un fluide de nettoyage sur la surface cylindrique ou sur un tissu de nettoyage pour le nettoyage de cette surface, la barre d'aspersion (12) s'étendant en direction axiale au-dessus de la surface cylindrique à nettoyer et présentant un certain nombre de buses d'aspersion (14), et
    un équipement d'amenée (16) pour l'amenée du fluide de nettoyage à la barre d'aspersion (12), l'équipement d'amenée (16) comprenant un convertisseur (20) pour transformer le fluide de nettoyage en un mélange liquide-gaz homogène par un enrichissement du fluide de nettoyage avec un gaz,
    caractérisé en ce que
    l'équipement d'amenée (16) comprend en outre une conduite de stockage (18) et une conduite d'alimentation (22) disposée en aval du convertisseur (20) et à travers laquelle le fluide de nettoyage est amené à la barre d'aspersion (12) à partir de la conduite de stockage (18) après avoir franchi le convertisseur (20).
  2. Dispositif de nettoyage selon la revendication 1, caractérisé en ce que le convertisseur (20) comprend un raccordement de gaz (32) à travers lequel le gaz est introduit dans le fluide de nettoyage traversant le convertisseur (20).
  3. Dispositif de nettoyage selon la revendication 2, caractérisé en ce que le convertisseur (20) est constitué sous forme d'injecteur.
  4. Dispositif de nettoyage selon la revendication 2, caractérisé en ce que le convertisseur (20) est constitué sous forme d'éjecteur.
  5. Dispositif de nettoyage selon une des revendications précédentes, caractérisé en ce que le convertisseur (20) comprend une buse, de préférence une buse de pulvérisation (33), pour la pulvérisation du fluide de nettoyage.
  6. Dispositif de nettoyage selon une des revendications précédentes, caractérisé en ce que, au moyen de l'équipement d'amenée (16), le fluide de nettoyage peut être introduit dans une extrémité ou dans les deux extrémités de la barre d'aspersion (12).
  7. Dispositif de nettoyage selon une des revendications 1 à 5, caractérisé en ce que, au moyen de l'équipement d'amenée (16), le fluide de nettoyage peut être introduit environ dans le milieu longitudinal de la barre d'aspersion (12).
  8. Dispositif de nettoyage selon une des revendications précédentes, caractérisé en ce que, en ce qui concerne le gaz, il s'agit d'air.
  9. Procédé de nettoyage d'une surface cylindrique d'une machine d'impression, dans lequel un fluide de nettoyage est transformé en un mélange liquide-gaz homogène par un enrichissement supplémentaire avec du gaz au moyen d'un convertisseur (20), et le mélange liquide-gaz est, à l'aide d'une barre d'aspersion (12) qui s'étend en direction axiale au-dessus de la surface cylindrique à nettoyer et présente un certain nombre de buses d'aspersion (14), aspergé sur la surface cylindrique ou sur un tissu de nettoyage pour le nettoyage de cette surface,
    caractérisé en ce que
    le fluide de nettoyage est amené à la barre d'aspersion (12) par le biais d'une conduite d'alimentation (22) après avoir franchi le convertisseur (20) à partir d'une conduite de stockage (18).
EP07819868A 2006-11-23 2007-11-20 Procédé de nettoyage ainsi que dispositif de nettoyage pour une surface cylindrique d'une machine d'impression Not-in-force EP2091737B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006055278A DE102006055278B3 (de) 2006-11-23 2006-11-23 Reinigungsverfahren sowie Reinigungsvorrichtung für eine Zylinderoberfläche einer Druckmaschine
PCT/EP2007/010035 WO2008061705A1 (fr) 2006-11-23 2007-11-20 Procédé de nettoyage ainsi que dispositif de nettoyage pour une surface cylindrique d'une machine d'impression

Publications (2)

Publication Number Publication Date
EP2091737A1 EP2091737A1 (fr) 2009-08-26
EP2091737B1 true EP2091737B1 (fr) 2010-10-13

Family

ID=38859709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07819868A Not-in-force EP2091737B1 (fr) 2006-11-23 2007-11-20 Procédé de nettoyage ainsi que dispositif de nettoyage pour une surface cylindrique d'une machine d'impression

Country Status (4)

Country Link
EP (1) EP2091737B1 (fr)
AT (1) ATE484390T1 (fr)
DE (2) DE102006055278B3 (fr)
WO (1) WO2008061705A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013214454A1 (de) * 2013-07-24 2015-01-29 manroland sheetfed GmbH Bogenführungszylinder mit einer pneumatischen Bogenhaltevorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794901A (en) * 1987-06-16 1989-01-03 Industrial Technology Research Institute Low pressure air assisted fuel injection apparatus for engine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349156A (en) * 1980-08-11 1982-09-14 Spraying Systems Company Efficiency nozzle
DE3915210A1 (de) 1989-05-10 1990-11-22 Lechler Gmbh & Co Kg Zweistoff-flachstrahlduese zur zerstaeubung von fluessigkeiten
DE4230056A1 (de) * 1992-09-08 1994-03-10 Man Nutzfahrzeuge Ag Zerstäubereinrichtung
JPH06198860A (ja) 1992-12-28 1994-07-19 Sakurai Graphic Syst:Kk 印刷機のインキ洗浄装置
DK83193A (da) 1993-07-09 1995-01-10 Tresu A S Maskinfabriken Fremgangsmåde og apparat til rensning af overfladen på en valse
US7117788B2 (en) 2004-02-27 2006-10-10 Goss International Americas, Inc. Spray device
DE102004011861A1 (de) * 2004-03-11 2005-09-29 Koenig & Bauer Ag Reinigungsvorrichtung
DE102004011860A1 (de) * 2004-03-11 2005-09-29 Koenig & Bauer Ag Reinigungsvorrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794901A (en) * 1987-06-16 1989-01-03 Industrial Technology Research Institute Low pressure air assisted fuel injection apparatus for engine

Also Published As

Publication number Publication date
WO2008061705A1 (fr) 2008-05-29
DE502007005376D1 (de) 2010-11-25
DE102006055278B3 (de) 2008-01-31
ATE484390T1 (de) 2010-10-15
EP2091737A1 (fr) 2009-08-26

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