EP1197333B1 - Machine d'impression flexographique avec un dispositif de nettoyage pour le cylindre d'impression - Google Patents

Machine d'impression flexographique avec un dispositif de nettoyage pour le cylindre d'impression Download PDF

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Publication number
EP1197333B1
EP1197333B1 EP00122461A EP00122461A EP1197333B1 EP 1197333 B1 EP1197333 B1 EP 1197333B1 EP 00122461 A EP00122461 A EP 00122461A EP 00122461 A EP00122461 A EP 00122461A EP 1197333 B1 EP1197333 B1 EP 1197333B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
washing
flexographic printing
printing press
doctor blade
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
Application number
EP00122461A
Other languages
German (de)
English (en)
Other versions
EP1197333A1 (fr
Inventor
Manfred Terstegen
Wilfried Dr. Kolbe
Klaus Schirrich
Bodo Steinmeier
Lars Grüter
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 DE50012286T priority Critical patent/DE50012286D1/de
Priority to EP00122461A priority patent/EP1197333B1/fr
Priority to ES00122461T priority patent/ES2257248T3/es
Priority to JP2001316770A priority patent/JP3623769B2/ja
Priority to US09/977,571 priority patent/US6647880B2/en
Publication of EP1197333A1 publication Critical patent/EP1197333A1/fr
Application granted granted Critical
Publication of EP1197333B1 publication Critical patent/EP1197333B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/006—Cleaning arrangements or devices for impression cylinders
    • 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
    • B41P2235/20—Wiping devices
    • B41P2235/21—Scrapers, e.g. absorbent pads

Definitions

  • the invention relates to a flexographic printing machine with a counter-pressure cylinder and at least one inking unit, which has an engageable on the impression cylinder, interchangeable impression cylinder, an adjustable to the printing cylinder anilox roller and an adjustable to the anilox roller chamber doctor blade.
  • the printing cylinder and usually the anilox rollers of the various inking units are interchangeable, so that the machine can be converted for different print jobs.
  • EP-A-0 769 373 a flexographic printing machine is described in which a particularly simple pressure cylinder change is made possible in that the actual pressure cylinder is designed as a sleeve, a so-called sleeve which is detachably arranged on an axis held in the machine frame and axially deduct from this axis.
  • US-A-3 378 902 a system is known that allows the sleeve to be hydraulically clamped on the axle.
  • EP-A-0 812 681 examples of printing machines where a simple replacement of the printing cylinder and the anilox roll are possible are described in EP-A-0 812 681 and in European Patent Application 99 119 764.1. From EP-A-1 010 522 a robot is known with which the cylinder change can be automated.
  • EP-A-1 000 737 describes a single-drive flexographic printing machine in which the speed of the impression cylinder can be selected independently of the speed of the impression cylinder.
  • EP-A-0 970 810 describes a system for cleaning the anilox roll and the chambered doctor blade.
  • a piping system which normally serves for supplying the ink to the chamber doctor blade and for discharging excess ink from the chamber doctor blade, is used to rinse the chamber doctor blade with a cleaning liquid.
  • the engineersff kaue the anilox roller can be cleaned.
  • the object of the invention is to equip a flexographic printing machine with a washing device that facilitates the washing of Reifendruckyzlinders.
  • washing cylinder which is adapted to be used instead of the printing cylinder in one of the inking units and apply cleaning liquid to the surface of the impression cylinder.
  • the washing cylinder is arranged in one of the inking units during the washing process instead of the printing cylinder, hardly any additional space is required at the periphery of the impression cylinder for accommodating the washing device.
  • Another advantage is that can be largely used for the washing device components that are already present in the printing press.
  • the normally provided for the printing cylinder drive can also be used to drive the washing cylinder, and also the hiring of the washing cylinder to the impression cylinder can be accomplished with the help of the mechanisms that are otherwise used for hiring the printing cylinder.
  • the printing cylinder of one of the inking units must be replaced with the washing cylinder. With the help of the per se provided for the printing cylinder change devices, as described for example in the publications mentioned above, this process can be considerably simplified or automate.
  • the inking unit which is provided for the installation of the washing cylinder, a per se known means for rinsing the chambered doctor blade with cleaning liquid, these chamber doctor blade and the anilox roller can also be used for wetting the washing cylinder with cleaning liquid be so that no additional devices for supplying the cleaning liquid to the washing cylinder are needed. So that the washing cylinder is supplied with a sufficient amount of cleaning liquid, it may be appropriate to exchange for the washing process, the regular, used during the printing process anilox roller against a special anilox roller having a higher liquid transfer capacity.
  • the cleaning liquid which has been applied to the surface of the counterpressure cylinder is preferably removed, together with the contaminants released from the impression cylinder by this cleaning fluid, by means of a doctor blade which is arranged on and off the circumference of the impression cylinder, preferably in the vicinity of the lower vertex thereof , This doctor then represents the only component of the washing device, which must be additionally arranged on the circumference of the impression cylinder.
  • the invention is particularly advantageous in a single-drive flexographic printing machine, since then a different circumferential speed than for the impression cylinder can be selected for the wash cylinder, so that a wiping movement takes place at the contact point.
  • the washing cylinder for this purpose can also be driven in opposite directions to the impression cylinder.
  • FIG. 1 schematically shows an impression cylinder 10 and three inking units 12, 14, 16 of a flexographic printing press. Three further inking units, not shown are arranged on the opposite side of the impression cylinder 10.
  • Each of the inking units 12, 14, 16 has a shaft 18 for a printing cylinder 20, a shaft 22 for an anilox roller 24 and a chamber doctor blade 26.
  • the printing cylinder 20 and the anilox roller 24 are in the example shown with hydro bushes 28 releasably clamped on the associated shaft 18 and 22 respectively.
  • the shafts 18, 22 of the individual inking units and a shaft 30 of the impression cylinder 10 can be driven independently with individual drives, not shown.
  • the shafts 18, 22 and the chambered doctor blade 26 with known and not shown on and Abstellmechanismen so movable that the impression cylinder 20 against the impression cylinder 10, the anilox roller 24 against the impression cylinder 20 and the chambered doctor blade 26 against the anilox roller 24 employed can be.
  • a substrate web not shown in Figure 1 by means of guide rollers 32 is guided over the impression cylinder 10 that it passes all six inking, and all inking units are employed with their printing cylinders 20 to the impression cylinder.
  • Each chamber doctor blade 26 is filled with ink which is supplied via an ink supply system, not shown.
  • the anilox rollers 24 have on their surface a cell grid. These cups are filled in the passage through the chamber doctor blade 26 with ink and then give their ink to the Drukkenden parts of the clamped on the printing cylinder 20 clichés, so that the substrate is printed in each inking unit with the relevant color separation.
  • FIG. 1 shows the printing press in the state during a washing operation for washing the impression cylinder 10.
  • the inking unit 16 is converted into a washing device in this state.
  • the printing cylinder 20 has been replaced by a washing cylinder 34 having a surface layer 36 of a liquid-receptive material such as felt, sponge or the like.
  • a special anilox roller 38 is spanned in the inking unit 16 instead of the anilox roller 24 used for printing, which has a larger Fluid transfer as the anilox roller 24 allows. This is achieved for example by a greater well depth.
  • the chambered doctor blades 26 of all inking units can be connected alternately via conduits 40, 42 and switching valves 44 to conduits 46, 48 of a paint supply system and to a supply system for cleaning fluid.
  • the cleaning liquid supply system includes a pump 50 and a cleaning liquid tank 52. This supply system is used in all inking units to wash the chambered doctor blade 26 after a printing process with cleaning fluid and at the same time to clean the anilox roller 24. During the washing operation, this system is used in the inking unit 16 to soak the surface layer 36 of the washing cylinder 34 with cleaning liquid.
  • cleaning liquid for example a solvent
  • excess cleaning liquid is returned via the hose 42 back into the container 52.
  • the wells on the surface of the anilox roll 38 are filled with cleaning liquid as they pass through the chamber doctor blade 26 and then deliver the cleaning liquid to the surface layer 36 of the washing cylinder 34. From the washing cylinder 34, the cleaning liquid is then transferred to the surface of the impression cylinder 10.
  • both the counter-pressure cylinder 10 and the washing cylinder 34 are driven in a clockwise direction, so that their surfaces move in opposite directions past each other.
  • the surface layer 36 of the washing cylinder thus wipes over the surface of the impression cylinder 10, and the adhering to the surface of the impression cylinder dirt particles are solved with the help of the cleaning liquid and at the same time mechanically wiped.
  • the washing cylinder 34 of the inking unit 16 is located in the direction of rotation of the impression cylinder 10 immediately before the lower vertex of this impression cylinder.
  • a doctor blade 54 is pneumatically attached to the impression cylinder, so that the cleaning fluid and the dirt particles are doctored off from the surface of the impression cylinder.
  • a printing cylinder 20 and a regular anilox roller 24 are then mounted on the shafts 18, 22 of the inking unit 16, as shown in FIG.
  • the doctor blade 54 is turned off by the impression cylinder 10
  • a printing substrate 56 is retracted
  • the chamber doctor blade 26 of each inking unit is connected via the switching valves 44 to the lines 46, 48 of the paint supply system, and the inking units are employed on the impression cylinder 10, so that the Printing can begin.
  • the printing cylinder 20 are driven in opposite directions to the impression cylinder 10, so that their printing surfaces unroll slip on the substrate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)

Claims (8)

  1. Machine à imprimer flexographique avec un contre-cylindre d'impression (10) et au moins un encreur (12, 14, 16) qui comporte un cylindre d'impression (20) échangeable, ajustable sur le contre-cylindre d'impression (10), un rouleau tramé (24 ; 38) ajustable sur le cylindre d'impression et une racle à chambre (26) ajustable sur le rouleau tramé, caractérisée par un cylindre de lavage (34) qui est conçu pour être utilisé à la place du cylindre d'impression (20) dans l'un (16) des encreurs (12, 14, 16) et pour appliquer un liquide de nettoyage sur la surface du contre-cylindre d'impression (10).
  2. Machine à imprimer flexographique selon la revendication 1, caractérisée en ce qu'au moins pour l'encreur (16), qui est prévu pour le montage du cylindre de lavage (34), la racle à chambre (26) peut être reliée à un système d'amenée (50, 52) du liquide de nettoyage, ce qui fait que le liquide de nettoyage est transféré au cylindre de lavage (34), par la racle à chambre et le rouleau tramé (38), pendant le lavage.
  3. Machine à imprimer flexographique selon la revendication 1 ou 2, caractérisée par une racle (54), ajustable sur le pourtour du contre-cylindre d'impression (10) pour enlever par raclage le liquide de nettoyage appliqué à l'aide du cylindre de lavage (34).
  4. Machine à imprimer flexographique selon la revendication 3, caractérisée en ce que la racle (54) est ajustable sur le contre-cylindre d'impression (10), à proximité du sommet inférieur.
  5. Machine à imprimer flexographique selon l'une des revendications 1 à 4, caractérisée en ce que sont prévus plusieurs encreurs (12, 14, 16) et le cylindre de lavage doit être inséré dans l'encreur (16) qui est le dernier encreur, dans le sens de rotation du contre-cylindre d'impression (10), avant le sommet inférieur du contre-cylindre d'impression.
  6. Machine à imprimer flexographique selon l'une des revendications 1 à 5, caractérisée en ce que le rouleau tramé (24) de l'encreur (16), dans lequel doit être inséré le cylindre de lavage (34), peut être échangé contre un rouleau tramé (38) qui présente un plus grand pouvoir de transfert du liquide.
  7. Machine à imprimer flexographique selon l'une des revendications 1 à 6, caractérisée en ce que le cylindre d'impression (20) et le cylindre de lavage (34) sont réalisés sous la forme de manchons qui sont disposés chacun de manière amovible sur un arbre (18) correspondant et qui peuvent être retirés axialement de cet arbre, lors d'un changement de cylindre.
  8. Machine à imprimer flexographique selon l'une des revendications 1 à 7, caractérisée en ce que pour l'entraînement du cylindre d'impression (20) et du cylindre de lavage (34), il est prévu un entraînement individuel sans couplage mécanique pour l'entraînement du contre-cylindre d'impression (10).
EP00122461A 2000-10-13 2000-10-13 Machine d'impression flexographique avec un dispositif de nettoyage pour le cylindre d'impression Expired - Lifetime EP1197333B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE50012286T DE50012286D1 (de) 2000-10-13 2000-10-13 Flexodruckmaschine mit Waschvorrichtung für den Gegendruckzylinder
EP00122461A EP1197333B1 (fr) 2000-10-13 2000-10-13 Machine d'impression flexographique avec un dispositif de nettoyage pour le cylindre d'impression
ES00122461T ES2257248T3 (es) 2000-10-13 2000-10-13 Maquina de impresion flexografica con dispositivo de lavado para el cilindro de contrapresion.
JP2001316770A JP3623769B2 (ja) 2000-10-13 2001-10-15 背圧シリンダを洗浄するための装置を備えたフレキソ印刷機
US09/977,571 US6647880B2 (en) 2000-10-13 2001-10-15 Flexographic printing press with device for washing the back-pressure cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00122461A EP1197333B1 (fr) 2000-10-13 2000-10-13 Machine d'impression flexographique avec un dispositif de nettoyage pour le cylindre d'impression

Publications (2)

Publication Number Publication Date
EP1197333A1 EP1197333A1 (fr) 2002-04-17
EP1197333B1 true EP1197333B1 (fr) 2006-03-01

Family

ID=8170088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00122461A Expired - Lifetime EP1197333B1 (fr) 2000-10-13 2000-10-13 Machine d'impression flexographique avec un dispositif de nettoyage pour le cylindre d'impression

Country Status (5)

Country Link
US (1) US6647880B2 (fr)
EP (1) EP1197333B1 (fr)
JP (1) JP3623769B2 (fr)
DE (1) DE50012286D1 (fr)
ES (1) ES2257248T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK176859B1 (da) * 2003-04-01 2010-01-04 Tresu Anlaeg As Trykværk, trykmaskine med sådan trykværk, værktöj til brug i trykmaskinen samt fremgangsmåde til brug af trykværket for trykning med flexofarver og lak
DE102004015336A1 (de) * 2004-03-30 2005-10-20 Koenig & Bauer Ag Einrichtung zum Reinigen der Farbwerke einer Satellitendruckmaschine
US7222568B1 (en) * 2005-12-23 2007-05-29 Fischer & Krecke Gmbh & Co. Method for flexographic multi-color printing using anilox rollers having different diameters
ITMI20130527A1 (it) * 2013-04-08 2014-10-09 Rossini S P A Metodo per pulire il tamburo centrale di una macchina flessografica, dispositivo di pulizia e macchina flessografica provvista di tale dispositivo
WO2018184738A1 (fr) * 2017-04-07 2018-10-11 Bobst Firenze S.R.L. Groupe d'impression avec manchon d'impression interchangeable
CN110001199A (zh) * 2019-04-10 2019-07-12 河南万顺包装材料有限公司 一种高品质印刷机
JP7426067B2 (ja) * 2019-10-28 2024-02-01 日本電子精機株式会社 インク供給ロールの洗浄方法とそれに使用するクリーニングシート

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378902A (en) 1966-07-05 1968-04-23 Mosstype Corp Hydraulically actuated demountable printing cylinders
DE4117389C2 (de) * 1991-05-28 2002-06-27 Koenig & Bauer Ag Farbzuführeinrichtung an einer Druckmaschine
US5367982A (en) * 1993-02-25 1994-11-29 Howard W. DeMoore Automatic coating circulation and wash-up system for printing presses
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
DK0769373T3 (da) 1995-10-18 1999-09-13 Fischer & Krecke Gmbh & Co Indretning til udskiftning af trykkecylinderkapper i trykkemaskiner
DE19548535C2 (de) * 1995-12-22 1999-12-30 Windmoeller & Hoelscher Verfahren und Vorrichtung zur Reinigung einer Rakelvorrichtung für ein Spülfarbwerk einer Rotationsdruckmaschine
DE19611048A1 (de) * 1996-03-20 1997-09-25 Windmoeller & Hoelscher Druckmaschine, vorzugsweise Flexodruckmaschine
EP0812681A1 (fr) 1996-06-12 1997-12-17 Fischer & Krecke Gmbh & Co. Machine d'impression
US5768993A (en) * 1997-05-09 1998-06-23 Bryce International, L.L.C. Inking system for offset printers
DE59802237D1 (de) 1998-06-25 2002-01-10 Fischer & Krecke Gmbh & Co Verfahren und Vorrichtung zum Reinigen des Farbtransportsystems einer Druckmaschine
EP1010522A1 (fr) 1998-12-14 2000-06-21 Fischer & Krecke Gmbh & Co. Dispositif pour manipuler des cylindres d'impression
DE19914099C1 (de) * 1999-03-27 2000-06-21 Roland Man Druckmasch Verfahren und Vorrichtung zum Entfernen von Farbe oder ähnlichen Medien aus einem einseitig offenen Behälter, dem eine Walze zugeordnet ist, in einer Rotationsdruckmaschine
DE59906531D1 (de) 1999-10-06 2003-09-11 Fischer & Krecke Gmbh & Co Vorrichtung zum Wechseln einer Druckzylinderhülse

Also Published As

Publication number Publication date
US6647880B2 (en) 2003-11-18
JP2002178485A (ja) 2002-06-26
ES2257248T3 (es) 2006-08-01
US20020073864A1 (en) 2002-06-20
EP1197333A1 (fr) 2002-04-17
JP3623769B2 (ja) 2005-02-23
DE50012286D1 (de) 2006-04-27

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