EP1511631A1 - Inking system for flexographic printing presses - Google Patents

Inking system for flexographic printing presses

Info

Publication number
EP1511631A1
EP1511631A1 EP03755039A EP03755039A EP1511631A1 EP 1511631 A1 EP1511631 A1 EP 1511631A1 EP 03755039 A EP03755039 A EP 03755039A EP 03755039 A EP03755039 A EP 03755039A EP 1511631 A1 EP1511631 A1 EP 1511631A1
Authority
EP
European Patent Office
Prior art keywords
rollers
involved
roller
ink
transport
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.)
Granted
Application number
EP03755039A
Other languages
German (de)
French (fr)
Other versions
EP1511631B1 (en
Inventor
Dietmar Koopmann
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher 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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1511631A1 publication Critical patent/EP1511631A1/en
Application granted granted Critical
Publication of EP1511631B1 publication Critical patent/EP1511631B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/30—Bearings mounted on sliding supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/304—Arrangements for inking roller bearings, forks or supports
    • B41F31/307—Sliding bearings

Definitions

  • the invention relates to the construction of flexographic printing inks. These inking units are equipped with a screen roller (2) and a plate roller (3). These two rollers are involved in the ink transport during the printing process.
  • the two aforementioned rollers generally have sleeves that have to be replaced, in particular when changing jobs.
  • the inking units are provided with setting devices
  • pedestals in which the axes of the two rollers (2, 3) involved in the ink transport are mounted are moved.
  • the bearing blocks of a roller can each be attached to slides that slide on suitable guides.
  • Rollers are attached to the machine frame.
  • the side of the inking unit facing the impression cylinder is located, while the motors which move the anilox roller are provided on the side of the two rollers involved in the ink transport facing away from the impression cylinder.
  • the length of the inking unit is large.
  • the object of the present invention is therefore a
  • Ink unit allows.
  • Ink transport rollers (2, 3) are attached to the machine frame.
  • Machine frame is understood here to mean any machine components suitable for fastening the motors.
  • the more compact design of the inking unit according to the invention also leads to a reduction in the vibrations which the rollers experience during the
  • Cliché roller can be moved on different guides.
  • different, vertically spaced guides enable easier positioning of the spindles in the inking unit.
  • a particularly preferred embodiment of the invention is as follows
  • the guides which carry the axis of one of the two rollers involved in the ink transport, are arranged above this roller, - while the guides, which support the axis of the other rollers involved in the ink transport, are attached below this roller.
  • FIG. 2 a section through the inking unit along the line C-C from FIG. 1
  • the figures show an exemplary embodiment of an inking unit 3 according to the invention, in which the setting elements 21, 22, 23, 24, 25 assigned to the printing plate roller 20 are attached below the printing plate roller 20, while the setting elements 11, 12, 13, 14, 15 assigned to the anilox roller 10 are arranged above the same 10.
  • the anilox roller 10 the bearing bracket 15 bearing its axis and the slide 14 on which the bearing bracket 15 is mounted, are suspended from the rail 13.
  • the movement of the slide 14 in the direction outlined by the arrow A takes place in that the motor 11 rotates the spindles 12 which engage through the internal threads 17 present in the bearing block 15.
  • the axis of the plate roller 20 is carried by the bearing block 25 which is attached to the slide 25.
  • the carriage 25 slides in the direction indicated by the arrow B on the rail 23 when the spindle 22 is off the motor 21 is moved.
  • all of the aforementioned elements of the setting devices 11, 12, 13, 14, 15, 21, 22, 23, 24, 25 are carried by a machine frame 2.
  • the counter-pressure roller 1 is shown on the left edge of the figure. In Figure 1, the rollers are in the position required for the printing process on the counter-pressure roller.
  • FIG. 1 illustrates that the free path length of the two spindles 12, 22 between the respective bearings 16, 26 of the spindles 12, 22 and the respective bearing blocks 15, 25 can be set to a minimum in this position in devices according to the invention.
  • FIG. 2 shows a section through the inking unit shown in FIG. 1 along the section line CC. This section describes in particular the function and position of the spindle 12 and guide 13.
  • the internal threads 17 and 27 in which the spindles 12 and 22 are rotated and which therefore have the function of non-rotating nuts can also be seen in this illustration.

Landscapes

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

Abstract

The invention relates to an inking system (3) of a flexographic printing press that comprises a pattern roller (10) and a printing roller (20). Inking systems of the aforementioned type normally comprise adjusting devices (11, 12, 13, 14, 15, 21, 22, 23, 24, 25) with which (11, 12, 13, 14, 15, 21, 22, 23, 24, 25) the positions of the two rollers (10, 20) involved in the transport of ink towards the counter roller (1) and the positions of the two rollers (10, 20) involved in the transport of ink relative each other can be adjusted by displacing bearing blocks (15, 25) in which the arbors of the two rollers (10, 20) involved in the transport of ink are mounted. The force required to adjust the position of the two rollers (10, 20) involved in the transport of ink is made available by motors (11, 21) that rotate spindles (12, 22) that extend through nuts that are non-rotationally mounted in the bearing blocks (15, 25). The invention is especially characterized in that all motors (11, 21) are mounted on the machine frame (2) on that side of the two rollers (10, 20) involved in the transport of ink that faces the counter-roller (1).

Description

Farbwerksaufbau bei Flexodruckmaschinen Inking unit design for flexographic printing machines
Die Erfindung betrifft den Aufbau von Flexodruckfarbwerken. Diese Farbwerke sind mit einer Raster- (2) und einer Klischeewalze (3) ausgestattet. Diese beiden Walzen sind am Farbtransport während des Druckvorgangs beteiligt. Die beiden vorgenannten Walzen tragen in der Regel Sleeves, die insbesondere bei Auftragswechseln ausgetauscht werden müssen.The invention relates to the construction of flexographic printing inks. These inking units are equipped with a screen roller (2) and a plate roller (3). These two rollers are involved in the ink transport during the printing process. The two aforementioned rollers generally have sleeves that have to be replaced, in particular when changing jobs.
Zu diesem Zweck sind die Farbwerke mit Einstellvorrichtungen versehenFor this purpose, the inking units are provided with setting devices
- mit welchen die Positionen dieser beiden am Farbtransport beteiligten Walzen (2, 3) zur Gegendruckwalze (4)- With which the positions of these two rollers (2, 3) involved in the ink transport to the counter-pressure roller (4)
- und die Positionen der beiden am Farbtransport beteiligten Walzen (2, 3) zueinander einstellbar sind.- And the positions of the two rollers (2, 3) involved in the ink transport can be adjusted to one another.
Zu diesem Zweck werden Lagerböcke, in denen die Achsen der beiden am Farbtransport beteiligten Walzen (2, 3) gelagert sind, verfahren. Dazu können die Lagerböcke eine Walze jeweils auf Schlitten angebracht sein, die auf geeigneten Führungen gleiten. Es gibt Farbwerke, bei denen der Schlitten der einen Walze auf Führungen gleitet, die auf dem Schlitten der anderen Walze angebracht sind. Bei anderen Farbwerken sind beide Walzen völlig unabhängig voneinander verfahrbar. Die zur Einstellung der Position der beiden am Farbtransport beteiligten Walzen notwendige Kraft wird in der Regel bereitgestellt,For this purpose, pedestals in which the axes of the two rollers (2, 3) involved in the ink transport are mounted are moved. For this purpose, the bearing blocks of a roller can each be attached to slides that slide on suitable guides. There are inking units in which the carriage of one roller slides on guides which are attached to the carriage of the other roller. With other inking units, both rollers can be moved completely independently of one another. The force required to adjust the position of the two rollers involved in the ink transport is usually provided,
- indem Spindeln, welche durch in den Lagerböcken vorhandene Innnengewinde hindurchgreifen,- by spindles which reach through the internal threads in the bearing blocks,
- von Motoren gedreht werden. Eine solche Vorrichtung ist beispielsweise aus der EP 0955161 A2 bekannt.- are rotated by motors. Such a device is known for example from EP 0955161 A2.
Diese Druckschrift zeigt ein Farbwerk, bei dem die Motoren, welche dieThis publication shows an inking unit in which the motors which the
Spindeln drehen und auf die oben geschilderte Weise die zurTurn the spindles and in the way described above
Positionseinstellung notwendige Kraft aufbringen, auf der der Gegendruckwalze abgewandten Seite der beiden am Farbtransport beteiligtenApply the necessary force to the position setting, on the side of the two involved in the ink transport facing away from the counter-pressure roller
Walzen am Maschinengestell angebracht sind.Rollers are attached to the machine frame.
Darüber hinaus sind Vorrichtungen bekannt, bei denen sich die Motoren, welche die Positionseinstellung der Klischeewalze ermöglichen, auf der demIn addition, devices are known in which the motors, which allow the position adjustment of the plate roller, on the
Gegendruckzylinder zugewandten Seite des Farbwerks befinden, während die Motoren welche die Rasterwalze bewegen, auf der dem Gegendruckzylinder abgewandten Seite der beiden am Farbtransport beteiligten Walzen vorgesehen sind.The side of the inking unit facing the impression cylinder is located, while the motors which move the anilox roller are provided on the side of the two rollers involved in the ink transport facing away from the impression cylinder.
Die Positionierung von Motoren auf der dem Gegendruckzylinder abgewandtenThe positioning of motors on the side facing away from the impression cylinder
Seite des Gegendruckzylinders ruft jedoch eine große Baulänge des Farbwerks hervor.On the side of the impression cylinder, however, the length of the inking unit is large.
Die Aufgabe der vorliegenden Erfindung besteht daher darin, einenThe object of the present invention is therefore a
Farbwerksaufbau vorzuschlagen, der eine Reduzierung der Baulänge desPropose inking unit construction, which reduces the overall length of the
Farbwerkes zulässt.Ink unit allows.
Diese Aufgabe wird dadurch gelöst, dass alle Motoren auf der der Gegendruckwalze zugewandten Seite der beiden amThis object is achieved in that all the motors on the side of the two facing the counterpressure roller on
Farbtransport beteiligten Walzen (2, 3) am Maschinengestell angebracht sind.Ink transport rollers (2, 3) are attached to the machine frame.
Unter Maschinengestell sind hierbei beliebige zur Befestigung der Motoren geeignete Maschinenbestandteile zu verstehen.Machine frame is understood here to mean any machine components suitable for fastening the motors.
Die erfindungsgemäße kompaktere Bauweise des Farbwerkes führt auch zu einer Reduktion der Schwingungen, denen die Walzen während desThe more compact design of the inking unit according to the invention also leads to a reduction in the vibrations which the rollers experience during the
Druckprozesses ausgesetzt sind.Printing process are exposed.
Es ist vorteilhaft, wenn der oder die Lagerböcke, welche die Achse derIt is advantageous if the or the bearing blocks, which the axis of the
Rasterwalze tragen und der oder die Lagerböcke, welche die Achse derAnilox roller bear and the or the bearing blocks, which the axis of the
Klischeewalze tragen, auf unterschiedlichen Führungen bewegbar sind. Insbesondere unterschiedliche vertikal voneinander beabstandete Führungen ermöglichen eine einfachere Positionierung der Spindeln im Farbwerk. Eine besonders bevorzugte Ausgestaltung der Erfindung ist durch die folgendeCliché roller, can be moved on different guides. In particular, different, vertically spaced guides enable easier positioning of the spindles in the inking unit. A particularly preferred embodiment of the invention is as follows
Positionierung der Führungen zu den Walzen gekennzeichnet:Positioning of the guides to the rollers marked:
- die Führungen, welche die Achse einer der beiden am Farbtransport beteiligten Walzen tragen, sind über dieser Walze angeordnet, - während die Führungen, welche die Achse der anderen am Farbtransport beteiligten Walzen tragen, unter dieser Walze angebracht sind.- The guides, which carry the axis of one of the two rollers involved in the ink transport, are arranged above this roller, - while the guides, which support the axis of the other rollers involved in the ink transport, are attached below this roller.
Auf diese Weise können die Motoren und Spindeln, die den beiden Walzen zugeordnet sind, in einfacher Weise vertikal beabstandet werden, so dass ihre Anordnung in dem Farbwerk keine Probleme bereitet.In this way, the motors and spindles that are assigned to the two rollers can be easily vertically spaced, so that their arrangement in the inking unit poses no problems.
Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor. Die einzelnen Figuren zeigen:Further exemplary embodiments of the invention are evident from the description and the claims. The individual figures show:
Fig 1 Seitenansicht eines Ausführungsbeispiels eines erfindungsgemäßen Farbwerks Fig 2 Einen Schnitt durch das Farbwerk entlang der Linie C-C aus Figur 11 side view of an embodiment of an inking unit according to the invention FIG. 2 a section through the inking unit along the line C-C from FIG. 1
Die Figuren zeigen ein Ausführungsbeispiel eines erfindungsgemäßen Farbewerkes 3, bei dem die der Klischeewalze 20 zugeordneten Einstellelemente 21 , 22, 23, 24, 25 unterhalb der Klischeewalze 20 angebracht sind, während die der Rasterwalze 10 zugeordneten Einstellelemente 11 , 12, 13, 14, 15 oberhalb derselben 10 angeordnet sind. Damit ist die Rasterwalze 10, der ihre Achse tragende Lagerbock 15 und der Schlitten 14 auf dem der Lagerbock 15 angebracht ist, an der Schiene 13 aufgehängt. Die zur Bewegung des Schlittens 14 in der durch den Pfeil A skizzierten Richtung erfolgt, indem der Motor 11 die Spindeln 12 , welche durch in dem Lagerbock 15 vorhandenen Innengewinde 17 hindurchgreifen, dreht. Analog zum Aufbau der Einsteilvorrichtung 11 , 12, 13, 14, 15 der Rasterwalze 10, wird die Achse der Klischeewalze 20 von dem Lagerbock 25, der auf dem Schlitten 25 angebacht ist, getragen. Der Schlitten 25 gleitet in der durch den Pfeil B vorgegeben Richtung auf der Schiene 23, wenn die Spindel 22 von dem Motor 21 bewegt wird. In dem dargestellten Ausführungsbeispiel werden alle vorgenannten Elemente der Einstellungsvorrichtungen 11 , 12, 13, 14, 15, 21 , 22, 23, 24, 25 von einem Maschinengestell 2 getragen. Am linken Bildrand der Figur 1 ist die Gegendruckwalze 1 dargestellt. In Figur 1 befinden sich die Walzen in der für den Druckprozess notwendigen an die Gegendruckwalze angestellten Position. Die Figur 1 verdeutlicht, dass die freie Weglänge der beiden Spindeln 12, 22 zwischen den jeweiligen Lagern 16, 26 der Spindeln 12, 22 und den jeweiligen Lagerböcken 15, 25 in dieser Position bei erfindungsgemäßen Vorrichtungen minimal einstellbar ist. Die Figur 2 zeigt einen Schnitt durch das in Figur 1 dargestellte Farbwerk entlang der Schnittlinie C-C. Dieser Schnitt beschreibt insbesondere die Funktion und Lage der Spindel 12 und Führung 13. Auch die Innengewinde 17 und 27, in denen die Spindeln 12 und 22 gedreht werden und die damit die Funktion undrehbarer Muttern haben, sind in dieser Darstellung zu sehen. The figures show an exemplary embodiment of an inking unit 3 according to the invention, in which the setting elements 21, 22, 23, 24, 25 assigned to the printing plate roller 20 are attached below the printing plate roller 20, while the setting elements 11, 12, 13, 14, 15 assigned to the anilox roller 10 are arranged above the same 10. Thus, the anilox roller 10, the bearing bracket 15 bearing its axis and the slide 14 on which the bearing bracket 15 is mounted, are suspended from the rail 13. The movement of the slide 14 in the direction outlined by the arrow A takes place in that the motor 11 rotates the spindles 12 which engage through the internal threads 17 present in the bearing block 15. Analogously to the structure of the adjusting device 11, 12, 13, 14, 15 of the anilox roller 10, the axis of the plate roller 20 is carried by the bearing block 25 which is attached to the slide 25. The carriage 25 slides in the direction indicated by the arrow B on the rail 23 when the spindle 22 is off the motor 21 is moved. In the exemplary embodiment shown, all of the aforementioned elements of the setting devices 11, 12, 13, 14, 15, 21, 22, 23, 24, 25 are carried by a machine frame 2. The counter-pressure roller 1 is shown on the left edge of the figure. In Figure 1, the rollers are in the position required for the printing process on the counter-pressure roller. FIG. 1 illustrates that the free path length of the two spindles 12, 22 between the respective bearings 16, 26 of the spindles 12, 22 and the respective bearing blocks 15, 25 can be set to a minimum in this position in devices according to the invention. FIG. 2 shows a section through the inking unit shown in FIG. 1 along the section line CC. This section describes in particular the function and position of the spindle 12 and guide 13. The internal threads 17 and 27 in which the spindles 12 and 22 are rotated and which therefore have the function of non-rotating nuts can also be seen in this illustration.

Claims

Patentansprüche claims
1. Farbwerk (3) einer Flexodruckmaschine mit einer Raster- (10) und einer Klischeewalze (20)1. inking unit (3) of a flexographic printing machine with a raster (10) and a plate roller (20)
- mit Einsteilvorrichtungen (11 , 12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26)- with adjusting devices (11, 12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26)
- mit welchen (11 , 12, 13, 14, 15, 16, 21 , 22, 23, 24, 25, 26) die Positionen dieser beiden am Farbtransport beteiligten Walzen (10, 20) zum.Gegendruckzylinder (1 )- With which (11, 12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26) the positions of these two rollers (10, 20) involved in the ink transport to the counter-pressure cylinder (1)
- und die Positionen der beiden am Farbtransport beteiligten Walzen (10, 20) zueinander einstellbar sind,and the positions of the two rollers (10, 20) involved in the ink transport can be adjusted relative to one another,
- indem Lagerböcke (15, 25), in denen die Achsen der beiden am Farbtransport beteiligten Walzen (10, 20) gelagert sind, verfahren werden,by moving bearing blocks (15, 25) in which the axes of the two rollers (10, 20) involved in the ink transport are mounted,
- wobei die zur Einstellung der Position der beiden am Farbtransport beteiligten Walzen (10, 20) notwendige Kraft bereitgestellt wird,the force required to adjust the position of the two rollers (10, 20) involved in the ink transport is provided,
- indem Spindeln (12, 22), welche durch in oder an den Lagerböcken (15, 25) angebrachte Innengewinde (17, 27) hindurchgreifen,by spindles (12, 22) which engage through internal threads (17, 27) provided in or on the bearing blocks (15, 25),
- von Motoren (11 , 21 ) gedreht werden dadurch gekennzeichnet dass alle Motoren (11 , 21) auf der der Gegendruckwalze (1 ) zugewandten Seite der beiden am Farbtransport beteiligten Walzen '(10, 20) am Maschinengestell (2) angebracht sind. - Rotated by motors (11, 21), characterized in that all motors (11, 21) are attached to the machine frame (2) on the side of the two rollers ' (10, 20) involved in the ink transport that faces the counter-pressure roller (1).
2. Farbwerk (3) nach Anspruch 1 dadurch gekennzeichnet, dass der oder die Lagerböcke (15), welche die Achse der Rasterwalze (10) tragen und der oder die Lagerböcke (25), welche die Achse der Klischeewalze (20) tragen, auf unterschiedlichen Führungen (13) bewegbar sind.2. inking unit (3) according to claim 1, characterized in that the or the bearing blocks (15) which carry the axis of the anilox roller (10) and the bearing block (25) which carry the axis of the plate roller (20) different guides (13) are movable.
3. Farbwerk (3) nach Anspruch 2 dadurch gekennzeichnet, dass3. inking unit (3) according to claim 2, characterized in that
- die Führungen (13, 23), welche die Achse einer der beiden am Farbtransport beteiligten Walzen (10, 20) tragen, über dieser Walze angeordnet sind,the guides (13, 23), which carry the axis of one of the two rollers (10, 20) involved in the ink transport, are arranged above this roller,
- während die Führungen (13, 23), welche die Achse der anderen am Farbtransport beteiligten Walzen tragen (10, 20), unter dieser Walze angebracht sind. - While the guides (13, 23), which carry the axis of the other rollers involved in the ink transport (10, 20), are attached under this roller.
EP03755039A 2002-05-28 2003-05-12 Inking system for flexographic printing presses Expired - Fee Related EP1511631B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10223666 2002-05-28
DE10223666A DE10223666B4 (en) 2002-05-28 2002-05-28 Inking system for flexo printing machines
PCT/EP2003/004952 WO2003099567A1 (en) 2002-05-28 2003-05-12 Inking system for flexographic printing presses

Publications (2)

Publication Number Publication Date
EP1511631A1 true EP1511631A1 (en) 2005-03-09
EP1511631B1 EP1511631B1 (en) 2007-01-17

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Application Number Title Priority Date Filing Date
EP03755039A Expired - Fee Related EP1511631B1 (en) 2002-05-28 2003-05-12 Inking system for flexographic printing presses

Country Status (6)

Country Link
US (1) US7258066B2 (en)
EP (1) EP1511631B1 (en)
AU (1) AU2003232757A1 (en)
DE (2) DE10223666B4 (en)
ES (1) ES2279150T3 (en)
WO (1) WO2003099567A1 (en)

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US20050211117A1 (en) 2005-09-29
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DE10223666B4 (en) 2006-06-14
ES2279150T3 (en) 2007-08-16
DE10223666A1 (en) 2004-01-08
DE50306316D1 (en) 2007-03-08
EP1511631B1 (en) 2007-01-17
US7258066B2 (en) 2007-08-21

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