WO2022073650A1 - Dispositif de transport d'encre d'impression dans une presse d'impression flexographique ou une presse d'héliogravure - Google Patents

Dispositif de transport d'encre d'impression dans une presse d'impression flexographique ou une presse d'héliogravure Download PDF

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Publication number
WO2022073650A1
WO2022073650A1 PCT/EP2021/056169 EP2021056169W WO2022073650A1 WO 2022073650 A1 WO2022073650 A1 WO 2022073650A1 EP 2021056169 W EP2021056169 W EP 2021056169W WO 2022073650 A1 WO2022073650 A1 WO 2022073650A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
pump
motor
impeller
printing machine
Prior art date
Application number
PCT/EP2021/056169
Other languages
German (de)
English (en)
Inventor
Massimo Pedrazzini
Gianluca QUARTIERI
Tiziano GIUCA
Original Assignee
Koenig & 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 & Bauer Ag filed Critical Koenig & Bauer Ag
Priority to EP21712104.5A priority Critical patent/EP4117920B1/fr
Publication of WO2022073650A1 publication Critical patent/WO2022073650A1/fr

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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
    • B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles

Definitions

  • the invention relates to a device for transporting printing ink in a flexographic printing machine or gravure printing machine according to claim 1.
  • the printing inks used in a flexographic printing machine or gravure printing machine usually contain solvents, e.g. B. ethanol, which require special explosion protection according to the so-called ATEX directives of the European Union (ATEX is an abbreviation of the two French terms ATmospheres Explosibles).
  • ATEX is an abbreviation of the two French terms ATmospheres Explosibles.
  • air-operated pumps are used, preferably peristaltic pumps or diaphragm pumps, in particular double diaphragm pumps.
  • DE 102 25681 B4 discloses a method for supplying and removing printing ink to and from a squeegee device of an inking unit of a rotary printing machine, the squeegee device consisting of a doctor blade carrier provided with a longitudinal groove with doctor blades that can be set against an inking or anilox roller, which, together with the inking roller and the trough, define an ink chamber, and consists of conduits and motor-driven pumping means for supplying and removing ink into and out of the ink chamber, one of the pumping means for supplying ink into the ink chamber and one of the pumping means serves to remove paint from it, using pumping devices preset in their parameters, which are operated with a fixed power ratio, and wherein part of the paint flow discharged from the squeegee device is fed back to the squeegee device via at least one line, which leads from the pressure side of the suction pump to the pressure-side supply line of the supplying pump device, with the two pump devices being
  • DE 100 05 876 A1 discloses an ink pump for a pump inking unit of a rotary printing machine, with one or more interchangeable ink dispensing units, each having at least one storage space, which are arranged on a traverse located between the side frames, the traverse having a pump drive and a and each paint dispensing unit has a paint pump and a second clutch part connected to the paint pump, the clutch being designed as a magnetic clutch, each clutch part preferably having a permanent magnet and the paint pump being designed as a diaphragm pump.
  • DE 102008 022 988 A1 discloses a fluid supply arrangement for a printing press designed as a sheet-fed printing press and therefore not as a flexographic printing press or gravure printing press, having a fluid reservoir for storing fluid to be supplied to the printing press, a fluid supply device with a fluid chamber and an application element that interacts with the fluid chamber for applying the fluid from the fluid chamber to a working cylinder of the printing press, a line circuit having a supply line and a return line, which connects the fluid reservoir to the fluid chamber, for transporting the fluid between the fluid reservoir and the fluid chamber, conveying means designed as a first fluid pump and as a second fluid pump , which are arranged in the line circuit between the fluid reservoir and the fluid chamber, for delivering the fluid, and pressure control means for controlling the fluid pressure in the fluid chamber, so that a predetermined negative limit value or excess pressure limit value in the fluid chamber is not exceeded, the pressure control means having a control device which is connected to the first and the second fluid pump and into which an electric converter is integrated for controlling the speed
  • WO 2017/025578 A1 discloses an ink circuit for an inking unit of a flexographic or gravure printing machine, the inking unit having an ink supply for providing print-ready ink and an ink discharge for removing excess ink, and the ink supply from a supply pump and the ink discharge from a discharge pump is operated, with the discharge pump being an annular piston pump driven by an asynchronous motor, and with the asynchronous motor being operated with field-oriented control, in which the motor states of speed, slip and torque are determined on the basis of the amount and the phase position of the instantaneous current in relation to the voltage.
  • DE 60022 983 T2 discloses a magnetic pump with self-alignment in two axial directions, comprising a preferably cylindrical inner chamber provided with a suction duct extending axially and a delivery duct extending circumferentially; an impeller disposed inside the chamber and having a front portion facing the suction pipe, a rear portion facing the opposite direction, and a central support portion; a cup-shaped drive rotor located outside the chamber and having at least one drive magnet; a drive magnet which is installed in the impeller and which faces the drive magnet and forms a magnetic coupling therewith; a support spindle which extends axially into the chamber and which supports the impeller in a rotatable and axially movable manner; and optionally fore and aft thrust bearing bushings mounted on the spindle in accordance with front section and the rear section of the impeller are arranged, the impeller being kept in stable balance and its axial position in both directions controlled and self-aligned by means of a linear magnetic coupling between the
  • the object of the invention is to create a device for transporting printing ink in a flexographic printing machine or gravure printing machine.
  • the device for transporting printing ink in a flexographic printing machine or gravure printing machine meets the explosion protection regulations in accordance with the ATEX directives of the European Union and at least the ATEX Zone 2 standard (Series II 3/3GD HB T 135° c) and is therefore approved for use in a flexographic printing machine or gravure printing machine.
  • the fulfillment of the explosion protection regulations results advantageously from the fact that required for the transport of the ink electrical components such.
  • B. a motor and other drive means are shielded from the ink to be transported by design measures. Further advantages can be seen from the following description.
  • Fig. 1 shows a schematic example and greatly simplified a device for transporting printing ink in a web printing flexographic printing machine, wherein this device has an ink chamber 01 arranged in the flexographic printing machine with an ink inlet 02 and an ink outlet 03.
  • This ink chamber 01 is preferably arranged in or on an inking unit of the flexographic printing press.
  • a flexographic printing machine generally has several such inking units.
  • the respective ink feed 02 and the respective ink flow 03 for each of these inking units, ie for their respective ink chamber 01, are each indicated by a corresponding z. B. connected to a paint tank z. B. formed by pipes or hoses line system through which the ink is guided.
  • the respective ink chamber 01 When the printing ink is applied to a printing substrate, which is in particular designed as a web of material, the respective ink chamber 01 preferably interacts with a squeegee that is or at least can be placed on a rotating cylinder of the flexographic printing press.
  • a feed pump 04 is arranged in the ink feed 02 to transport printing ink to the ink chamber 01, the feed pump 04 having an impeller 07 that rotates or is at least rotatable about a first axis 26 and is driven by a preferably electric first motor 06.
  • a discharge pump 08 is arranged in the ink discharge 03, the discharge pump 08 having an impeller 11 which rotates or can at least be rotated about a second axis 27 and is driven by a preferably electric second motor 09.
  • the respective axis 26; 27 is thus arranged stationary in contrast to a shaft and does not transmit any torque to the respective impeller 07; 11.
  • the paint feed 02 to the impeller 07, which is driven by the motor 06 and which rotates or is at least rotatable about the first axis 26, and/or the paint discharge 03 from the impeller 11 which is driven by the motor 09 and which rotates or is at least rotatable about the second axis 27 respective axis 26; 27 are each preferably arranged radially or parallel to the axis with an offset other than zero. If the color inlet 02 and/or the color outlet 03 is arranged parallel to the axis, this offset is from the center point of the relevant axis 26; 27 e.g. B. in the range between 50% and 100% of the radius of the relevant usually circular impeller 07; 11.
  • the motor 06 of the feed pump 04 and the motor 09 of the discharge pump 08 each preferably have their own drive controller 22; 23, in the case of a drive controller 22; 23 for the inlet pump 04 and the outlet pump 08, these drive controllers 22; 23 are in turn advantageously controlled by a common control unit 24.
  • This control unit 24 is z. B. as a control station belonging to the flexographic printing machine or as a control panel belonging to the flexographic printing machine.
  • the inlet pump 04 and/or the outlet pump 08 are therefore remotely controlled or at least can be remotely controlled.
  • the drive controller 22; 23 is or will be regulated in each case the volume flow of printing ink to be transported. This regulation preferably has the effect that no pressure builds up in connection with the transport of printing ink in the ink chamber 01.
  • the ink chamber 01 works without pressure, in contrast to the use of peristaltic pumps or diaphragm pumps.
  • the respective impeller 07; 11 is advantageously of its respective motor 06; 09 each via a non-contact magnetic coupling 12; 13 driven in rotation, this magnetic coupling 12; 13 each have a motor-side magnet 17; 18 and one on the respective impeller 07; 11 arranged driver magnets 19; 21 has.
  • the respective driver magnet 19; 21 is connected to the respective impeller 07; 11 each firmly connected.
  • the respective impeller 07; 11 is preferably in each case in a housing 14 immediately surrounding it; 16 arranged.
  • the motor-side magnet 17; 18 of the respective magnetic coupling 12; 13 undisturbed on the respective impeller 07; 11 arranged driver magnets 19; 21 can act in a non-positive manner, in the inlet pump 04 or in the outlet pump 08 the respective impeller 07; 11 immediately surrounding housing 14; 16 each made of a non-magnetic, ie non-polar material such. B. formed from a thermoplastic material. So that the respective on the respective impeller 07; 11 arranged driver magnet 19; 21 each within the respective housing 14; 16 arranged, whereas the motor-side magnet 17; 18 of the respective magnetic coupling 12; 13 each outside the respective housing 14; 16 is arranged.
  • the respective impeller 07; 11 immediately surrounding housing 14; 16 is thus designed due to its material such that it is located between the motor-side magnet 17; 18 of the respective magnetic coupling 12; 13 and the respective impeller 07; 11 arranged driver magnets 19; 21 formed magnetic field is not affected.
  • the respective impeller 07; 11 immediately surrounding housing 14; 16 is e.g. B. formed as a part of the respective pump housing.
  • the non-contact magnetic power transmission of the respective magnetic coupling 12; 13 takes place through the respective housing 14; 16 through.
  • the motor-side magnet 17; 18 of the respective magnetic coupling 12; 13 and on the respective impeller 07; 11 arranged driver magnet 19; 21 are preferably each formed as a permanent magnet. However, it can also be provided that the motor-side magnet 17; 18 of the respective magnetic coupling 12; 13 is designed as a particular switchable electromagnet.
  • the respective impeller 07; 11 is about its respective axis 26; 27 rotatably mounted, the bearing points of the respective axis 26; 27 each exclusively inside the respective housing 14; 16 are arranged.
  • the respective housing 14; 16 of the respective pump 04; 08 thus has no openings for the respective axis 26; 27, but forms a hermetically sealed system for the printing ink to be conveyed - apart from the necessary openings for the respective inlet and outlet of printing ink - with respect to the environment, since within the device for transporting printing ink in the relevant flexographic printing machine due to its described design there is no contact between the printing ink and the environment.
  • ECTFE Ethylene Chlorine Tri Fluorine Ethylene
  • Inlet pump 04 and/or the outlet pump 08 are each z. B. given by inner walls of parts of the respective pump housing and / or by inner walls of ink-carrying lines and / or pipes or hoses.
  • the plastic ECTFE can be used very well for coatings, e.g. B. in containers, tanks, lines or pipes are used, which are arranged for transporting ink in a flexographic printing machine and / or used there.
  • ECTFE coatings meet the highest requirements for chemical resistance, even at elevated operating temperatures. Because ECTFE is temperature resistant up to 150°C and a product with high purity. Due to a low surface roughness, an ECTFE surface is relatively smooth with a good non-stick function.
  • the z. B. produced by a coating ECTFE surface also has a high abrasion resistance and can be applied with a coating with a layer thickness of up to 1 mm, whereby a high barrier property is achieved.
  • the inlet pump 04 and/or the outlet pump 08 are each designed to be self-priming.
  • a self-priming design of feed pump 04 and/or discharge pump 08 means that a small quantity of printing ink is initially moved in feed pump 04 and/or discharge pump 08 in their respective start-up phase by sucking in air, with air moving from the suction side to the pressure side the respective pump 04; 08 is moved. The next time the feed pump 04 and/or the discharge pump 08 is started, the air is released back into the atmosphere. After the suction side of the respective pump 04; 08 collected air is removed, the suction side of the respective pump 04; 08 is flooded with printing ink alone and their respective actual pumping phase begins.
  • the feed pump 04 and/or the discharge pump 08 each work with a long intake length and short suction times.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

L'invention concerne un dispositif de transport d'encre d'imprimerie dans une presse d'impression flexographique ou une presse d'héliogravure, comprenant une chambre d'encrage (01) qui est disposée dans la presse d'impression flexographique ou la presse d'héliogravure et comporte une entrée d'encre (02) et une sortie d'encre (03). Une pompe d'alimentation (04), qui est entraînée par un moteur (06), est disposée dans l'entrée d'encre (02) de la chambre d'encrage (01) pour le transport dans le but d'acheminer l'encre d'impression, et/ou une pompe de décharge (08), qui est entraînée par un moteur (09), est disposée dans la sortie d'encre (03) de la chambre d'encrage (01) pour évacuer l'encre d'impression en excès. La pompe d'alimentation (04) et/ou la pompe de décharge (08) comporte(nt), pour transporter l'encre d'impression, une roue à aubes (07, 11) respective qui est montée de manière rotative autour d'un axe respectif (26, 27) et la roue à aubes (07, 11) respective est entraînée en rotation par le moteur respectif (06, 09).
PCT/EP2021/056169 2020-10-08 2021-03-11 Dispositif de transport d'encre d'impression dans une presse d'impression flexographique ou une presse d'héliogravure WO2022073650A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21712104.5A EP4117920B1 (fr) 2020-10-08 2021-03-11 Dispositif de transport d'encre d'impression dans une presse d'impression flexographique ou une presse d'héliogravure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020126348.1A DE102020126348A1 (de) 2020-10-08 2020-10-08 Vorrichtung zum Transport von Druckfarbe in einer Flexodruckmaschine oder Tiefdruckmaschine
DE102020126348.1 2020-10-08

Publications (1)

Publication Number Publication Date
WO2022073650A1 true WO2022073650A1 (fr) 2022-04-14

Family

ID=74874850

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/056169 WO2022073650A1 (fr) 2020-10-08 2021-03-11 Dispositif de transport d'encre d'impression dans une presse d'impression flexographique ou une presse d'héliogravure

Country Status (3)

Country Link
EP (1) EP4117920B1 (fr)
DE (1) DE102020126348A1 (fr)
WO (1) WO2022073650A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10005876A1 (de) 2000-02-10 2001-08-30 Koenig & Bauer Ag Farbpumpe
DE10321346A1 (de) * 2002-06-20 2004-01-08 Heidelberger Druckmaschinen Ag Vorrichtung zum Fördern einer Flüssigkeit in einer einem Bedruckstoff verarbeitenden Maschine
DE60022983T2 (de) 2000-05-05 2006-07-20 Argal S.R.L. Selbstausrichtende Magnetpumpe
DE102008022988A1 (de) 2008-05-09 2009-11-12 Manroland Ag Fluidzuführ-Anordnung für eine Druckmaschine
DE10225681B4 (de) 2002-06-10 2010-02-04 Windmöller & Hölscher Kg Verfahren und Vorrichtung zum Zu- und Abführen von Druckfarbe zu und von einer Rakelvorrichtung eines Farbwerks einer Rotationsdruckmaschine und/oder zum Reinigen der Rakelvorrichtung
US20120200649A1 (en) * 2009-10-13 2012-08-09 Mimaki Engineering Co., Ltd. Liquid circulation system and ink-jet printer
WO2017025578A1 (fr) 2015-08-10 2017-02-16 Windmöller & Hölscher Kg Circuit d'encre d'un dispositif d'encrage d'une machine d'impression flexographique ou d'impression en creux
JP2019177480A (ja) * 2016-07-13 2019-10-17 株式会社日立製作所 印字装置、印字装置の制御方法、および、筆記装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10005876A1 (de) 2000-02-10 2001-08-30 Koenig & Bauer Ag Farbpumpe
DE60022983T2 (de) 2000-05-05 2006-07-20 Argal S.R.L. Selbstausrichtende Magnetpumpe
DE10225681B4 (de) 2002-06-10 2010-02-04 Windmöller & Hölscher Kg Verfahren und Vorrichtung zum Zu- und Abführen von Druckfarbe zu und von einer Rakelvorrichtung eines Farbwerks einer Rotationsdruckmaschine und/oder zum Reinigen der Rakelvorrichtung
DE10321346A1 (de) * 2002-06-20 2004-01-08 Heidelberger Druckmaschinen Ag Vorrichtung zum Fördern einer Flüssigkeit in einer einem Bedruckstoff verarbeitenden Maschine
DE102008022988A1 (de) 2008-05-09 2009-11-12 Manroland Ag Fluidzuführ-Anordnung für eine Druckmaschine
US20120200649A1 (en) * 2009-10-13 2012-08-09 Mimaki Engineering Co., Ltd. Liquid circulation system and ink-jet printer
WO2017025578A1 (fr) 2015-08-10 2017-02-16 Windmöller & Hölscher Kg Circuit d'encre d'un dispositif d'encrage d'une machine d'impression flexographique ou d'impression en creux
JP2019177480A (ja) * 2016-07-13 2019-10-17 株式会社日立製作所 印字装置、印字装置の制御方法、および、筆記装置

Also Published As

Publication number Publication date
DE102020126348A1 (de) 2022-04-14
EP4117920A1 (fr) 2023-01-18
EP4117920B1 (fr) 2023-11-22

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