EP0958920A1 - Machine à imprimer - Google Patents

Machine à imprimer Download PDF

Info

Publication number
EP0958920A1
EP0958920A1 EP98109272A EP98109272A EP0958920A1 EP 0958920 A1 EP0958920 A1 EP 0958920A1 EP 98109272 A EP98109272 A EP 98109272A EP 98109272 A EP98109272 A EP 98109272A EP 0958920 A1 EP0958920 A1 EP 0958920A1
Authority
EP
European Patent Office
Prior art keywords
ink chamber
pump
ink
printing machine
pressure
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.)
Withdrawn
Application number
EP98109272A
Other languages
German (de)
English (en)
Inventor
Lars Grüter
Stefan Heimann
Wilfried Dr.-Ing. Kolbe
Klaus Schirrich
Bodo Steinmeister
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.)
Fischer and Krecke GmbH and Co KG
Original Assignee
Fischer and Krecke GmbH and Co KG
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 Fischer and Krecke GmbH and Co KG filed Critical Fischer and Krecke GmbH and Co KG
Priority to EP98109272A priority Critical patent/EP0958920A1/fr
Publication of EP0958920A1 publication Critical patent/EP0958920A1/fr
Withdrawn legal-status Critical Current

Links

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

Definitions

  • the invention relates to a printing press, in particular a flexographic printing press, with one adjustable to the circumference of an applicator roller, one Ink chamber forming chamber doctor blade and a conveyor with adjustable Delivery rate for supplying liquid to the ink chamber and for withdrawing liquid from the ink chamber.
  • Flexographic printing machines have an application roller, for example one with a Cup grid provided with the liquid, with Solvent-diluted ink is applied to an impression cylinder becomes.
  • the doctor blade is at the perimeter of the Applicator roller turned on so that the ink cups with each revolution of the After having applied their ink to the printing parts of the Have released printing cylinders, as they pass through the ink chamber filled with paint again.
  • the conveyor comprises one in one Supply line arranged supply pump with which the printing ink from a Ink container is conveyed into the chamber doctor blade, and one in one Return line arranged return pump with which the printing ink the chambered doctor blade is removed and returned to the ink container becomes. In this way, the printing ink becomes during printing constantly circulated in a closed cycle.
  • the same conveyor is used instead the printing ink a cleaning liquid, such as water, soapy water or solvent to pump through the doctor blade to do this Flush and clean the color system.
  • the pumps of the conveyor should therefore be used with a wide range of liquids to be pumped compatible with different chemical and physical properties be without causing lubrication or sealing problems is coming. Because this requirement is difficult to meet with centrifugal pumps , peristaltic pumps or diaphragm pumps are preferred. Compressed air driven diaphragm pumps are particularly preferred Drive power available through a common compressed air system is set and by appropriate dosing of the compressed air supply have an essentially constant volume flow set. The at such pulsating pressure fluctuations occurring with With the help of expansion tanks, partially smoothed with the one to be pumped Liquid and the rest filled with a compressible gas are.
  • the object of the invention is a printing press of the type mentioned Way of creating a consistent print quality and a consistent good seal between chamber doctor blade and applicator roller can be achieved is.
  • a pressure sensor generates a signal representative of the pressure in the ink chamber, and one Regulator that determines the conveying capacity of the conveying device during the feeding and / or when withdrawing the liquid depending on the signal of the Regulates the pressure sensor.
  • the liquid pressure in the ink chamber can thus be in one closed control loop to a substantially constant setpoint be regulated so that both during printing and the sealing during the rinsing and cleaning phases negative pressure in the ink chamber is avoided and yet an adequate supply of liquid to the ink chamber can be guaranteed.
  • the control intervention can be carried out on the feed pump or on the return pump or also on both pumps. If the control intervention on the Return pump takes place, the feed pump can be done in a conventional manner can be set to a predetermined volume flow.
  • the controller is on a pressure setpoint is set at which it is ensured that the chamber doctor with the help of a pneumatic adjustment system, for example remains attached to the circumference of the application roller. If the pressure in the Ink chamber exceeds this setpoint, the controller will change the Delivery rate of the return pump increases and in this way the pressure adjusted to the setpoint again.
  • the controller is preferably an easily programmable one electronic controller that sends an electrical control signal to the drive the pump delivers. If the pump is a pneumatically driven Diaphragm pump, the control signal acts on an electromechanical or electropneumatic actuator with which the compressed air supply to the Diaphragm pump is throttled more or less.
  • the controller can automatically issue a warning signal generated, which indicates the malfunction. That way also the function monitoring of the printing press is facilitated and in the case a malfunction the risk of consequential damage and the production of waste decreased.
  • FIGs 1 and 2 is a side view and an end view, respectively an application roller 10 of a flexographic printing machine is shown.
  • an application roller 10 of a flexographic printing machine is shown.
  • a chamber doctor blade 12 adjustable the one Ink chamber 14 forms.
  • the ink chamber 14 by doctor blade 16, 18 limited, which doctor the circumference of the rotating applicator roller 10.
  • the application roller 20 is in turn on the circumference of a not shown Adjustable printing cylinder and gives the in the printing operation Ink chamber 14 received ink to the printing parts of the Clichés on the impression cylinder.
  • a conveyor 20 is also shown schematically, which is used during printing to be diluted with solvent Ink continuously between the ink chamber 14 of the doctor blade and to circulate a paint container 22.
  • the conveyor 20 includes one Supply line 24, which leads from the ink container 22 to the ink chamber 14 and includes a feed pump 26 and one from the ink chamber 14 to the Paint container 22 returning return line 28 with a return pump 30th
  • the feed pump 26 and the return pump 30 are driven by compressed air Diaphragm pumps formed, which with compressed air lines 32, 34 Compressed air can be supplied from a compressed air source, not shown.
  • an expansion tank 36 is connected, which in a known manner to compensate for pressure fluctuations serves the pulsating diaphragm pumps.
  • the feed pump 26 is connected to the associated compressed air line 32 via a metering valve 38 connected to the delivery rate (volume flow) of this Pump is adjustable. In a corresponding manner, the delivery rate is Return pump 30 using an electrically adjustable throttle 40 changeable between the drive of the diaphragm pump and the associated compressed air line 34 is arranged.
  • a pressure sensor 42 is arranged on or in the ink chamber 14, which receives the static liquid pressure in the ink chamber 14 and a signal P corresponding to this pressure to an electronic Controller 44 delivers.
  • the controller 44 in turn supplies an actuating signal S. to the throttle 40.
  • the controller 40 is programmed so that it with the help of the pressure sensor 42 controls pressure to a predetermined setpoint. If the actual value of the pressure exceeds the target value, the controller 44 initiates another Open the throttle 40 so that the delivery rate of the return pump 30th increases. Since the delivery rate of the feed pump 26 remains unchanged, this leads to a decrease in the pressure in the ink chamber 14. Correspondingly the throttle 40 continues when the soli value is undershot closed.
  • the setpoint is set so that during printing sufficient ink filling of the ink chamber 14 is ensured, on the other hand however, the pressure in the ink chamber 14 remains so low that the through this pressure generated force, which has the tendency to the chamber doctor 12 from Push the extent of the applicator roller 10 away, is not greater than the force with the chamber doctor blade with the help of a pneumatic system, not shown is pressed against the applicator roller.
  • the supply line 24 can and the return line 28 is uncoupled from the ink container 22 and with Containers not shown for fresh and / or used cleaning liquid be connected so that the cleaning liquid with the help of the same Conveyor 20 is circulated in the system, which otherwise to Circulation of the printing ink is used. Even during this cleaning operation
  • the control function of the controller 44 can be effective. You can choose the pressure is regulated to a different setpoint than during the Printing company.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP98109272A 1998-05-22 1998-05-22 Machine à imprimer Withdrawn EP0958920A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98109272A EP0958920A1 (fr) 1998-05-22 1998-05-22 Machine à imprimer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98109272A EP0958920A1 (fr) 1998-05-22 1998-05-22 Machine à imprimer

Publications (1)

Publication Number Publication Date
EP0958920A1 true EP0958920A1 (fr) 1999-11-24

Family

ID=8231977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109272A Withdrawn EP0958920A1 (fr) 1998-05-22 1998-05-22 Machine à imprimer

Country Status (1)

Country Link
EP (1) EP0958920A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003103964A2 (fr) * 2002-06-10 2003-12-18 Windmöller & Hölscher Kg Procede et dispositif permettant d'amener de l'encre d'imprimerie dans un dispositif de racle d'un mecanisme d'encrage d'une presse rotative ainsi que d'evacuer cette encre de ce dispositif et/ou de nettoyer ce dispositif de racle
EP1389523A1 (fr) * 2002-08-14 2004-02-18 MAN Roland Druckmaschinen AG Dispositif d'enduction pour une machine de traitement
DE102008011007A1 (de) * 2008-02-25 2009-09-03 Technotrans Ag Farbschonende Farbversorgung von Druckmaschinen
DE102008022988A1 (de) * 2008-05-09 2009-11-12 Manroland Ag Fluidzuführ-Anordnung für eine Druckmaschine
DE102008042460A1 (de) 2008-09-29 2010-04-08 Windmöller & Hölscher Kg Vorrichtung und Verfahren zur Versorgung eines Farb- oder Druckwerks einer Druckmaschine mit Druckfarbe oder einer anderen Flüssigkeit
DE102009039459A1 (de) 2008-09-15 2010-04-15 Heidelberger Druckmaschinen Ag Verfahren zum Betreiben eines Druckmaschine-Versorgungsgerät-Systems
CN102689502A (zh) * 2011-03-24 2012-09-26 海德堡印刷机械股份公司 用于将流体施加到印刷机的印刷装置中的辊上的方法
EP2620285A1 (fr) * 2012-01-25 2013-07-31 Bobst Bielefeld GmbH Système de nettoyage pour chambre d'encre
WO2020200519A1 (fr) * 2019-04-05 2020-10-08 Bobst Bielefeld Gmbh Système d'alimentation en encre

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461426A2 (fr) * 1990-06-07 1991-12-18 Rockwell International Corporation Système d'apport de fluide d'imprimerie sous pression pour l'impression lithographique sans clés d'encrage
EP0542190A2 (fr) * 1991-11-13 1993-05-19 Karl H. Sengewald GmbH & Co. KG Procédé d'impression en relief et applicateur
EP0765747A1 (fr) * 1995-08-25 1997-04-02 Fit Group, Inc. Dispositif de revêtement et méthode pour délivrer un liquide, et pour vider et nettoyer un dispositif de revêtement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461426A2 (fr) * 1990-06-07 1991-12-18 Rockwell International Corporation Système d'apport de fluide d'imprimerie sous pression pour l'impression lithographique sans clés d'encrage
EP0542190A2 (fr) * 1991-11-13 1993-05-19 Karl H. Sengewald GmbH & Co. KG Procédé d'impression en relief et applicateur
EP0765747A1 (fr) * 1995-08-25 1997-04-02 Fit Group, Inc. Dispositif de revêtement et méthode pour délivrer un liquide, et pour vider et nettoyer un dispositif de revêtement

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003103964A2 (fr) * 2002-06-10 2003-12-18 Windmöller & Hölscher Kg Procede et dispositif permettant d'amener de l'encre d'imprimerie dans un dispositif de racle d'un mecanisme d'encrage d'une presse rotative ainsi que d'evacuer cette encre de ce dispositif et/ou de nettoyer ce dispositif de racle
WO2003103964A3 (fr) * 2002-06-10 2004-07-01 Windmoeller & Hoelscher Procede et dispositif permettant d'amener de l'encre d'imprimerie dans un dispositif de racle d'un mecanisme d'encrage d'une presse rotative ainsi que d'evacuer cette encre de ce dispositif et/ou de nettoyer ce dispositif de racle
US7555982B2 (en) 2002-06-10 2009-07-07 Windmoeller & Hoelscher Kg Method and device for supplying printing ink to and carrying it off from a doctor blade device of the inking system of a rotary printing press and/or for cleaning the doctor blade device
EP1389523A1 (fr) * 2002-08-14 2004-02-18 MAN Roland Druckmaschinen AG Dispositif d'enduction pour une machine de traitement
US8398192B2 (en) 2008-02-25 2013-03-19 Technotrans Ag Ink-saving ink supply of printing machines
DE102008011007A1 (de) * 2008-02-25 2009-09-03 Technotrans Ag Farbschonende Farbversorgung von Druckmaschinen
CN101952123B (zh) * 2008-02-25 2013-10-02 泰创股份公司 印刷机的省墨式供墨
WO2009106281A1 (fr) * 2008-02-25 2009-09-03 Technotrans Ag Alimentation en encre ménageant l'encre de machines à imprimer
CN101952123A (zh) * 2008-02-25 2011-01-19 泰创股份公司 印刷机的省墨式供墨
DE102008011007B4 (de) * 2008-02-25 2011-11-17 Technotrans Ag Farbschonende Farbversorgung von Druckmaschinen
DE102008022988A1 (de) * 2008-05-09 2009-11-12 Manroland Ag Fluidzuführ-Anordnung für eine Druckmaschine
DE102009039459A1 (de) 2008-09-15 2010-04-15 Heidelberger Druckmaschinen Ag Verfahren zum Betreiben eines Druckmaschine-Versorgungsgerät-Systems
DE102008042460A1 (de) 2008-09-29 2010-04-08 Windmöller & Hölscher Kg Vorrichtung und Verfahren zur Versorgung eines Farb- oder Druckwerks einer Druckmaschine mit Druckfarbe oder einer anderen Flüssigkeit
CN102689502A (zh) * 2011-03-24 2012-09-26 海德堡印刷机械股份公司 用于将流体施加到印刷机的印刷装置中的辊上的方法
CN102689502B (zh) * 2011-03-24 2016-08-17 海德堡印刷机械股份公司 用于将流体施加到印刷机的印刷装置中的辊上的方法
EP2620285A1 (fr) * 2012-01-25 2013-07-31 Bobst Bielefeld GmbH Système de nettoyage pour chambre d'encre
WO2020200519A1 (fr) * 2019-04-05 2020-10-08 Bobst Bielefeld Gmbh Système d'alimentation en encre
US12097694B2 (en) 2019-04-05 2024-09-24 Bobst Bielefeld Gmbh Ink supply system

Similar Documents

Publication Publication Date Title
DE69104367T2 (de) Ausgabeverfahren und -vorrichtung, insbesondere für dichtungs-/klebemittel.
EP0141168B1 (fr) Réglage initial pour dispositifs d'encrage
DE2300289C2 (de) Vorrichtung zum Auftragen flüssiger oder pastöser Farbe für Siebdruckmaschinen
DE19717727B4 (de) Farbwerk für eine Rotationsdruckmaschine
WO2010130397A1 (fr) Système d'impression pour réaliser des impressions sur des bouteilles ou récipients analogues et dispositif ou machine d'impression doté d'un tel système
DE3112490C2 (de) Vorrichtung zum selbsttätigen Zuführen von Druckfarbe zu einer Druckvorrichtung
DE69601766T3 (de) Beschichtungsvorrichtung und Verfahren zur Abgabe einer Flüssigkeit, und Entleeren und Reinigen einer Beschichtungsvorrichtung
DE2611262C3 (de) Vorrichtung zur Zu- und Ableitung von Druckfarbe und einer Waschflüssigkeit zum bzw. vom Farbwerk einer Flexodruckmaschine
EP0958920A1 (fr) Machine à imprimer
DE202004006534U1 (de) Versorgungseinrichtung für eine Reinigungsvorrichtung in einer Verarbeitungsmaschine
EP1050407B1 (fr) Dispositif de nettoyage pour l'industrie graphique
DE102008042460A1 (de) Vorrichtung und Verfahren zur Versorgung eines Farb- oder Druckwerks einer Druckmaschine mit Druckfarbe oder einer anderen Flüssigkeit
EP1719621B1 (fr) Système de nettoyage pour les surfaces des cylindres d'une machine d'impression
DE69114021T2 (de) System an einem dampfsprühgerät.
EP2259927B1 (fr) Alimentation en encre ménageant l'encre de machines à imprimer
DE3714160A1 (de) Farbwerk fuer eine druckmaschine
EP2844478A1 (fr) Dispositif pour régler un paramètre de fonctionnement d'une encre pour un processus d'impression d'une presse rotative ainsi que procédé à cet effet
DE10236781B4 (de) Beschichtungseinrichtung für eine Druck- oder Beschichtungsmaschine
DE2113608B2 (de) Verfahren zum Betneb einer Off Setrotationsdruckmaschine
EP0970810A1 (fr) Procédé et dispositif pour nettoyer le système de transport d'encre d'une machine à imprimer
EP0730527B1 (fr) Dispositif d'alimentation du mecanisme d'encrage d'imprimantes en encre d'impression
EP1090756A1 (fr) Chambre à râcles
EP0738594A1 (fr) Procédé et dispositif pour l'application de liquides sur des feuilles continues, en particulier d'encres d'impression
DE10236780C1 (de) Dosiereinrichtung für ein flüssiges Medium in einer Verarbeitungsmaschine
EP1060888B1 (fr) Dispositif de nettoyage pour l'industrie graphique

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20000525