EP1852256B1 - Flexographic printing press - Google Patents

Flexographic printing press Download PDF

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Publication number
EP1852256B1
EP1852256B1 EP20070008720 EP07008720A EP1852256B1 EP 1852256 B1 EP1852256 B1 EP 1852256B1 EP 20070008720 EP20070008720 EP 20070008720 EP 07008720 A EP07008720 A EP 07008720A EP 1852256 B1 EP1852256 B1 EP 1852256B1
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EP
European Patent Office
Prior art keywords
cylinder
format
flexographic printing
printing press
inking
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
EP20070008720
Other languages
German (de)
French (fr)
Other versions
EP1852256A1 (en
Inventor
Günter Schmid
Silvio Zamzow
Bruno Senger
Miguel Angel Jimenez
Andreas Kraus
Peter Siebker
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.)
Schaeffler Industrial Drives AG and Co KG
IHO Holding GmbH and Co KG
Original Assignee
INA Drives and Mechatronics GmbH and Co KG
Schaeffler 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 INA Drives and Mechatronics GmbH and Co KG, Schaeffler KG filed Critical INA Drives and Mechatronics GmbH and Co KG
Publication of EP1852256A1 publication Critical patent/EP1852256A1/en
Application granted granted Critical
Publication of EP1852256B1 publication Critical patent/EP1852256B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/24Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26Arrangement of cylinder bearings
    • B41F13/30Bearings mounted on sliding supports
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/24Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34Cylinder lifting or adjusting devices
    • B41F13/38Cylinder lifting or adjusting devices electrically or magnetically operated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F5/00Rotary letterpress machines
    • B41F5/24Rotary letterpress machines for flexographic printing

Definitions

  • the invention relates to a flexographic printing press with a central impression cylinder and surrounding format and color cylinders. Furthermore, the invention relates to a method for operating a flexographic printing machine.
  • a flexographic printing machine is for example from the DE 102 09 536 A1 known.
  • This printing machine has on both sides of a vertical, extending through the axis of a counter-pressure cylinder center plane brackets on which various roller bearing blocks are arranged displaceably.
  • the displaceability of the roller bearing blocks fulfills the purpose of being able to exchange color cylinders or format cylinders, also referred to as printing cylinders, as needed, for example after changing a print job.
  • the displacement of the individual roller bearing blocks takes place by means of different spindles and timing belt drives.
  • the invention has for its object to provide a flexographic printing machine, which allows for a simple structure, a fast, accurate and mutually independent adjustment of a format cylinder and a color cylinder. Furthermore, the object is to improve the performance of a flexographic printing machine.
  • the flexographic printing machine has, in a manner known per se, a central counter-pressure cylinder and a plurality of pairs each consisting of a format cylinder and a color cylinder.
  • the format cylinders abut on the impression cylinder and in turn are contacted by a respective color cylinder.
  • Moving devices are provided for changing the distances of the axes of rotation of the format cylinders and color cylinders from the axis of rotation of the impression cylinder.
  • Each traversing device enables independent adjustment of a format cylinder and a color cylinder.
  • the shuttle has a single, relative to the axis of the impression cylinder stationary, non-rotatable spindle, which serves to guide two independently movable carriage.
  • a spindle nut is mounted, which is directly driven by an electric motor.
  • the rotor of the electric motor is rigidly connected to the spindle nut, for example by a clamping or screw connection.
  • the motor is a torque motor.
  • the rotor of the motor is not rotatably supported by means of a separate Rotativlagers, but exclusively via a rotary bearing of the spindle nut, preferably a double-row angular contact ball bearings.
  • a rotary bearing of the spindle nut preferably a double-row angular contact ball bearings.
  • the traversing device has a length measuring device which can be designed as an incremental or absolute measuring system. Instead of a direct position determination of the carriage and an indirect position determination via a measurement of the angular position of the spindle nut-rotor unit is possible.
  • the traversing device with directly driven spindle nut has the particular advantage that compared to traversing systems which work with mechanical transmission means, such as toothed belts, high accelerations and traveling speeds as well as very short reaction times can be realized.
  • This makes it possible to use the shuttle not only when replacing cylinders, but also for active vibration damping.
  • vibrations of the impression cylinder are detected by means of a sensor and forwarded the corresponding signals to a control device which controls the traversing device, the one on the spindle nut counteracts the torque acting on the linear drive of the format and / or color cylinder of the oscillation of the impression cylinder.
  • FIG. 1 are roughly simplified essential functional elements of a flexographic printing machine 1 shown.
  • a central impression cylinder 2 acts together with format cylinders 3 and color cylinders 4.
  • An unillustrated to be printed fabric is applied to the surface of the impression cylinder 2 at.
  • the format cylinder 3 which presses the material web against the impression cylinder 2 have the printing pattern on the surface.
  • the printing ink is transferred from the color cylinders 4 to the format cylinder 3.
  • Both the format cylinder 3 and the color cylinder 4 can be replaced if necessary.
  • a shuttle 5 per pair of cylinders 3, 4 is present.
  • the traversing device 5 has a fixed, for example by means of a clamp 6, arranged in a frame 7 spindle 8. This spindle 8, together with a likewise fixed to the frame 7 linear guide 9 of the guide of two carriages 10, 11, which form bearing blocks of the format cylinder 3 and the color cylinder 4.
  • the format cylinder 3 is as out FIG. 2 emerges, as well as the color cylinder color cylinder 4 with roller bearings 12, for example, needle bearings, stored in the carriage 10, 11.
  • a length measuring device 13 with a measuring head 14 and a linear scale 15 is provided.
  • the drive of the carriage 10, 11 by means of a principle, for example, from the DE 102 10 071 A1 known torque motor 16, as shown in detail in Figure 3.
  • the permanent magnet excited torque motor 16 has a rigidly connected to the carriage 10, 11 energized primary part 17 and a rotatable secondary part 18 which is fixedly connected by means of a screw 19 with a spindle 8 cooperating with the spindle nut 20.
  • the spindle nut 20 is rotatably supported relative to the stator 17 of the torque motor 16 by means of a double-row angular contact ball bearing 21.
  • the rotor 18 of the torque motor 16 does not have its own Rotativlager.
  • the electric direct drive of the spindle nut 20 by the torque motor 16 makes it possible to change the forces acting between the cylinders 2, 3, 4, in particular between the format cylinder 3 and the impression cylinder 2, very accurately and quickly.
  • This property can be used to actively suppress vibrations of the impression cylinder 2.
  • vibrations of the impression cylinder 2 are measured with a vibration sensor 22, which passes corresponding signals to a control device 23.
  • the control device 23 is used to control the torque motor 16, whereby forces are generated, the counteracting in the oscillation of the impression cylinder 2 Mode act on the format cylinder 3 and / or the color cylinder 4. In this way, a closed loop for active vibration damping is realized.

Landscapes

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

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft eine Flexodruckmaschine mit einem zentralen Gegendruckzylinder sowie diesen umgebenden Format- und Farbzylindern. Des Weiteren betrifft die Erfindung ein Verfahren zum Betrieb einer Flexodruckmaschine.The invention relates to a flexographic printing press with a central impression cylinder and surrounding format and color cylinders. Furthermore, the invention relates to a method for operating a flexographic printing machine.

Hintergrund der ErfindungBackground of the invention

Eine Flexodruckmaschine ist beispielsweise aus der DE 102 09 536 A1 bekannt. Diese Druckmaschine weist beiderseits einer vertikalen, durch die Achse eines Gegendruckzylinders verlaufenden Mittelebene Konsolen auf, auf denen verschiedene Walzenlagerböcke verschieblich angeordnet sind. Die Verschiebbarkeit der Walzenlagerböcke erfüllt den Zweck, Farbzylinder oder Formatzylinder, auch als Druckzylinder bezeichnet, bei Bedarf, beispielsweise nach dem Wechsel eines Druckauftrags, austauschen zu können. Die Verschiebung der einzelnen Walzenlagerböcke erfolgt mittels verschiedener Spindeln und Zahnriemenantriebe. Insgesamt weist die aus der DE 102 09 536 A1 bekannte Flexodruckmaschine einen aufwendig aufgebauten Verstellmechanismus auf.A flexographic printing machine is for example from the DE 102 09 536 A1 known. This printing machine has on both sides of a vertical, extending through the axis of a counter-pressure cylinder center plane brackets on which various roller bearing blocks are arranged displaceably. The displaceability of the roller bearing blocks fulfills the purpose of being able to exchange color cylinders or format cylinders, also referred to as printing cylinders, as needed, for example after changing a print job. The displacement of the individual roller bearing blocks takes place by means of different spindles and timing belt drives. Overall, the from the DE 102 09 536 A1 known flexographic printing machine on a complex adjustment mechanism.

Aufgabe der ErfindungObject of the invention

Der Erfindung liegt die Aufgabe zugrunde, eine Flexodruckmaschine anzugeben, welche bei einfachem Aufbau eine schnelle, exakte und voneinander unabhängige Verstellung eines Formatzylinders und eines Farbzylinders ermöglicht. Des Weiteren besteht die Aufgabe, das Betriebsverhalten einer Flexodruckmaschine zu verbessern.The invention has for its object to provide a flexographic printing machine, which allows for a simple structure, a fast, accurate and mutually independent adjustment of a format cylinder and a color cylinder. Furthermore, the object is to improve the performance of a flexographic printing machine.

Zusammenfassung der ErfindungSummary of the invention

Diese Aufgaben werden durch eine Flexodruckmaschine mit den Merkmalen des Anspruchs 1 sowie durch ein Verfahren zum Betrieb einer Flexodruckmaschine mit den Merkmalen des Anspruchs 8 gelöst. Im Folgenden im Zusammenhang mit der Vorrichtung genannte Ausgestaltungen und Vorteile gelten sinngemäß auch für das Verfahren und umgekehrt.These objects are achieved by a flexographic printing machine with the features of claim 1 and by a method for operating a flexographic printing machine having the features of claim 8. The embodiments and advantages mentioned below in connection with the device also apply mutatis mutandis to the method and vice versa.

Die Flexodruckmaschine weist in an sich bekannter Art einen zentralen Gegendruckzylinder und mehrere Paare aus jeweils einem Formatzylinder und einem Farbzylinder auf. Beim Betrieb der Flexodruckmaschine liegen die Formatzylinder am Gegendruckzylinder an und werden ihrerseits von jeweils einem Farbzylinder kontaktiert. Zur Veränderung der Abstände der Drehachsen der Formatzylinder und Farbzylinder von der Drehachse des Gegendruckzylinders sind Verfahreinrichtungen vorgesehen. Jede Verfahreinrichtung ermöglicht eine unabhängige Verstellung eines Formatzylinders und eines Farbzylinders.The flexographic printing machine has, in a manner known per se, a central counter-pressure cylinder and a plurality of pairs each consisting of a format cylinder and a color cylinder. During operation of the flexographic printing machine, the format cylinders abut on the impression cylinder and in turn are contacted by a respective color cylinder. Moving devices are provided for changing the distances of the axes of rotation of the format cylinders and color cylinders from the axis of rotation of the impression cylinder. Each traversing device enables independent adjustment of a format cylinder and a color cylinder.

Nach der Erfindung weist die Verfahreinrichtung eine einzige, relativ zur Achse des Gegendruckzylinders ortsfeste, nicht drehbare Spindel auf, welche der Führung zweier unabhängig voneinander verfahrbarer Schlitten dient. In jedem Schlitten, welcher zur Lagerung des Farbzylinders bzw. des Formatzylinders vorgesehen ist, ist eine Spindelmutter gelagert, welche durch einen Elektromotor direkt antreibbar ist. Hierbei ist der Rotor des Elektromotors starr mit der Spindelmutter verbunden, beispielsweise durch eine Klemm- oder Schraubverbindung. Vorzugsweise handelt es sich bei dem Motor um einen Torquemotor.According to the invention, the shuttle has a single, relative to the axis of the impression cylinder stationary, non-rotatable spindle, which serves to guide two independently movable carriage. In each carriage, which is provided for storage of the ink cylinder or the format cylinder, a spindle nut is mounted, which is directly driven by an electric motor. Here, the rotor of the electric motor is rigidly connected to the spindle nut, for example by a clamping or screw connection. Preferably, the motor is a torque motor.

In bevorzugter Ausgestaltung ist der Rotor des Motors nicht mittels eines eigenen Rotativlagers, sondern ausschließlich über ein Rotativlager der Spindelmutter, vorzugsweise ein zweireihiges Schrägkugellager, drehbar gelagert. Damit ist sowohl ein sehr kompakter als auch ein spiel- und hysteresefreier Antrieb der Spindelmutter gegeben.In a preferred embodiment, the rotor of the motor is not rotatably supported by means of a separate Rotativlagers, but exclusively via a rotary bearing of the spindle nut, preferably a double-row angular contact ball bearings. Thus, both a very compact as well as a play and hysteresis-free drive the spindle nut is given.

Nach einer vorteilhaften Weiterbildung weist die Verfahreinrichtung eine Längenmesseinrichtung auf, welche als inkrementelles oder absolutes Messsystem ausgebildet sein kann. Statt einer direkten Positionsbestimmung des Schlittens ist auch eine indirekte Positionsbestimmung über eine Messung der Winkelposition der Spindelmutter-Rotor-Einheit möglich.According to an advantageous development, the traversing device has a length measuring device which can be designed as an incremental or absolute measuring system. Instead of a direct position determination of the carriage and an indirect position determination via a measurement of the angular position of the spindle nut-rotor unit is possible.

Die Verfahreinrichtung mit direkt angetriebener Spindelmutter hat den besonderen Vorteil, dass im Vergleich zu Verfahrsystemen, die mit mechanischen Übertragungsmitteln, etwa Zahnriemen, arbeiten, hohe Beschleunigungen und Verfahrgeschwindigkeiten sowie sehr kurze Reaktionszeiten realisierbar sind. Damit ist es möglich, die Verfahreinrichtung nicht nur beim Auswechseln von Zylindern, sondern auch zur aktiven Schwingungstilgung zu verwenden. Hierbei werden Schwingungen des Gegendruckzylinders mittels eines Sensors erfasst und die entsprechenden Signale an eine Steuereinrichtung weitergeleitet, welche die Verfahreinrichtung derart ansteuert, das ein auf die Spindelmutter des Linearantriebs des Format- und/oder Farbzylinders wirkendes Drehmoment der Schwingung des Gegendruckzylinders entgegenwirkt.The traversing device with directly driven spindle nut has the particular advantage that compared to traversing systems which work with mechanical transmission means, such as toothed belts, high accelerations and traveling speeds as well as very short reaction times can be realized. This makes it possible to use the shuttle not only when replacing cylinders, but also for active vibration damping. Here, vibrations of the impression cylinder are detected by means of a sensor and forwarded the corresponding signals to a control device which controls the traversing device, the one on the spindle nut counteracts the torque acting on the linear drive of the format and / or color cylinder of the oscillation of the impression cylinder.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Hierin zeigen:An embodiment of the invention will be explained in more detail with reference to a drawing. Herein show:

Kurze Beschreibung der ZeichnungShort description of the drawing

Figur 1FIG. 1
in einem schematischen Querschnitt Teile einer Flexodruckmaschine,in a schematic cross section parts of a flexographic printing machine,
Figur 2FIG. 2
in einer Schnittdarstellung eine Verfahreinrichtung der Flexodruckmaschine nach Figur 1, undin a sectional view of a traversing the flexographic printing machine after FIG. 1 , and
Figur 3FIG. 3
einen Antrieb eines Schlittens der Verfahreinrichtung nach Figur 2.a drive of a carriage of the shuttle after FIG. 2 ,
Ausführliche Beschreibung der ZeichnungDetailed description of the drawing

In Figur 1 sind grob vereinfacht wesentliche Funktionselemente einer Flexodruckmaschine 1 dargestellt. Ein zentraler Gegendruckzylinder 2 wirkt zusammen mit Formatzylindern 3 sowie Farbzylindern 4. Eine nicht dargestellte zu bedruckende Stoffbahn liegt an der Oberfläche des Gegendruckzylinders 2 an. Die die Stoffbahn an den Gegendruckzylinder 2 andrückenden Formatzylinder 3 weisen auf der Oberfläche das Druckmuster auf. Die Druckfarbe wird von den Farbzylindern 4 auf die Formatzylinder 3 übertragen. Im dargestellten Ausführungsbeispiel existieren acht Paare von je einem Formatzylinder 3 und einem Farbzylinder 4.In FIG. 1 are roughly simplified essential functional elements of a flexographic printing machine 1 shown. A central impression cylinder 2 acts together with format cylinders 3 and color cylinders 4. An unillustrated to be printed fabric is applied to the surface of the impression cylinder 2 at. The format cylinder 3 which presses the material web against the impression cylinder 2 have the printing pattern on the surface. The printing ink is transferred from the color cylinders 4 to the format cylinder 3. In the illustrated embodiment, there are eight pairs of each a form cylinder 3 and a color cylinder. 4

Sowohl die Formatzylinder 3 als auch die Farbzylinder 4 können bei Bedarf ausgewechselt werden. Um die Position jeder einzelnen Achse A3 eines Formatzylinders 3 sowie jeder Achse A4 eines Farbzylinders 4 relativ zur Achse A2 des Gegendruckzylinders 2 einstellen zu können, ist eine Verfahreinrichtung 5 pro Paar an Zylindern 3, 4 vorhanden. Die Verfahreinrichtung 5 weist eine fest, beispielsweise mittels einer Klemmung 6, in einem Rahmen 7 angeordnete Spindel 8 auf. Diese Spindel 8 dient zusammen mit einer ebenfalls am Rahmen 7 befestigten Linearführung 9 der Führung von zwei Schlitten 10, 11, welche Lagerböcke des Formatzylinders 3 bzw. des Farbzylinders 4 bilden.Both the format cylinder 3 and the color cylinder 4 can be replaced if necessary. To the position of each individual axis A3 of a format cylinder 3 as well as each axis A4 of a color cylinder 4 to be able to adjust relative to the axis A2 of the impression cylinder 2, a shuttle 5 per pair of cylinders 3, 4 is present. The traversing device 5 has a fixed, for example by means of a clamp 6, arranged in a frame 7 spindle 8. This spindle 8, together with a likewise fixed to the frame 7 linear guide 9 of the guide of two carriages 10, 11, which form bearing blocks of the format cylinder 3 and the color cylinder 4.

Der Formatzylinder 3 ist, wie aus Figur 2 hervorgeht, ebenso wie der Farbzylinder Farbzylinder 4 mit Wälzlagern 12, beispielsweise Nadellagern, im Schlitten 10, 11 gelagert. Zur Bestimmung der Position des Schlittens 10, 11 auf der Linearführung 9 ist eine Längenmesseinrichtung 13 mit einem Messkopf 14 und einem Linearmaßstab 15 vorgesehen.The format cylinder 3 is as out FIG. 2 emerges, as well as the color cylinder color cylinder 4 with roller bearings 12, for example, needle bearings, stored in the carriage 10, 11. To determine the position of the carriage 10, 11 on the linear guide 9, a length measuring device 13 with a measuring head 14 and a linear scale 15 is provided.

Der Antrieb der Schlitten 10, 11 erfolgt mittels eines prinzipiell beispielsweise aus der DE 102 10 071 A1 bekannten Torquemotors 16, wie im Detail aus Figur 3 hervorgeht. Der permanentmagneterregte Torquemotor 16 weist ein starr mit dem Schlitten 10, 11 verbundenes bestrombares Primärteil 17 sowie ein rotierbares Sekundärteil 18 auf, das mittels einer Verschraubung 19 fest mit einer mit der Spindel 8 zusammenwirkenden Spindelmutter 20 verbunden ist. Die Spindelmutter 20 ist mittels eines zweireihigen Schrägkugellagers 21 relativ zum Stator 17 des Torquemotors 16 drehbar gelagert. Der Rotor 18 des Torquemotors 16 weist kein eigenes Rotativlager auf.The drive of the carriage 10, 11 by means of a principle, for example, from the DE 102 10 071 A1 known torque motor 16, as shown in detail in Figure 3. The permanent magnet excited torque motor 16 has a rigidly connected to the carriage 10, 11 energized primary part 17 and a rotatable secondary part 18 which is fixedly connected by means of a screw 19 with a spindle 8 cooperating with the spindle nut 20. The spindle nut 20 is rotatably supported relative to the stator 17 of the torque motor 16 by means of a double-row angular contact ball bearing 21. The rotor 18 of the torque motor 16 does not have its own Rotativlager.

Der elektrische Direktantrieb der Spindelmutter 20 durch den Torquemotor 16 ermöglicht es, die Kräfte, die zwischen den Zylindern 2, 3, 4, insbesondere zwischen dem Formatzylinder 3 und dem Gegendruckzylinder 2, wirken, sehr genau und schnell zu verändern. Diese Eigenschaft ist nutzbar, um Schwingungen des Gegendruckzylinders 2 aktiv zu unterdrücken. Hierbei werden Schwingungen des Gegendruckzylinders 2 mit einem Schwingungssensor 22 gemessen, der entsprechende Signale an eine Steuereinrichtung 23 leitet. Die Steuereinrichtung 23 dient der Ansteuerung des Torquemotors 16, womit Kräfte erzeugt werden, die in der Schwingung des Gegendruckzylinders 2 entgegenwirkender Weise auf den Formatzylinder 3 und/oder den Farbzylinder 4 wirken. Auf diese Weise ist ein geschlossener Regelkreis zur aktiven Schwingungstilgung realisiert.The electric direct drive of the spindle nut 20 by the torque motor 16 makes it possible to change the forces acting between the cylinders 2, 3, 4, in particular between the format cylinder 3 and the impression cylinder 2, very accurately and quickly. This property can be used to actively suppress vibrations of the impression cylinder 2. Here, vibrations of the impression cylinder 2 are measured with a vibration sensor 22, which passes corresponding signals to a control device 23. The control device 23 is used to control the torque motor 16, whereby forces are generated, the counteracting in the oscillation of the impression cylinder 2 Mode act on the format cylinder 3 and / or the color cylinder 4. In this way, a closed loop for active vibration damping is realized.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Flexodruckmaschineflexographic printing
22
GegendruckzylinderImpression cylinder
33
Formatzylinderformat cylinder
44
Farbzylindercolor cylinder
55
Verfahreinrichtungtraversing
66
Klemmungclamping
77
Rahmenframe
88th
Spindelspindle
99
Linearführunglinear guide
1010
Schlittencarriage
1111
Schlittencarriage
1212
Wälzlagerroller bearing
1313
LängenmesseinrichtungLength measuring device
1414
Messkopfprobe
1515
Linearmaßstablinear scale
1616
Torquemotortorque motor
1717
Primärteilprimary part
1818
Sekundärteilsecondary part
1919
Verschraubungscrew
2020
Spindelmutterspindle nut
2121
SchrägkugellagerAngular contact ball bearings
2222
Schwingungssensorvibration sensor
2323
Steuereinrichtungcontrol device
A2, A3, A4A2, A3, A4
Achseaxis

Claims (8)

  1. Flexographic printing press, having an impression cylinder (2) and a plurality of pairs arranged around it comprising in each case one format cylinder (3) and one inking chamber (4), the format cylinder (3) being provided for making contact with firstly the impression cylinder (2) and secondly the inking cylinder (4), and the positions of the axles (A3, A4) of the format cylinder (3) and the inking cylinder (4) relative to the axis (A2) of the impression cylinder (2) by means of a moving device (5) can be varied, characterized in that the moving device (5) comprises a spindle (8) which is stationary relative to the axle (A2) of the impression cylinder (2) and on which two slides (10, 11) which can be moved independently of one another and are provided for mounting the inking cylinder (4) and the format cylinder (3) are guided by means of in each case one spindle nut (20) which can be driven, a rotor (18) of a motor (16) which serves to drive the spindle nut (20) directly being connected rigidly to the spindle nut (20).
  2. Flexographic printing press according to Claim 1, characterized in that the motor (16) which drives the spindle nut (20) directly is configured as a torque motor.
  3. Flexographic printing press according to Claim 1 or 2, characterized in that the rotor (18) is mounted rotatably without a dedicated rotary bearing, exclusively via a rotary bearing (21) of the spindle nut (20).
  4. Flexographic printing press according to Claim 3, characterized in that the rotary bearing (21) of the spindle nut (20) is configured as a double-row angular-contact ball bearing.
  5. Flexographic printing press according to one of Claims 1 to 4, characterized in that the moving device (5) has a length-measuring device (13).
  6. Flexographic printing press according to one of Claims 1 to 5, characterized by an oscillation sensor (22) which senses oscillations of the impression cylinder (2).
  7. Flexographic printing press according to Claim 6, characterized by a control device (23) for actuating the moving device (5) as a function of a signal which is supplied by the oscillation sensor (22).
  8. Method for operating a flexographic printing press which has an impression cylinder (2) and a plurality of format cylinders (3) which make contact with the former and a number of inking cylinders (4) which corresponds to the number of format cylinders (3), which inking cylinders (4) make contact with in each case one format cylinder (3), having the following features:
    • oscillations of the impression cylinder (2) are detected by means of an oscillation sensor (22),
    • signals which are supplied by the oscillation sensor (22) are used to automatically change the position of at least one of the cylinders comprising format cylinder (3) and inking cylinder (4) in a manner which damps the oscillations, a slide (10, 11) which mounts the format cylinder (3) or the inking cylinder (4) being moved by means of a spindle drive (8, 20) with an electrically directly driven spindle nut (20).
EP20070008720 2006-05-05 2007-04-28 Flexographic printing press Not-in-force EP1852256B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610020957 DE102006020957A1 (en) 2006-05-05 2006-05-05 flexographic printing

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Publication Number Publication Date
EP1852256A1 EP1852256A1 (en) 2007-11-07
EP1852256B1 true EP1852256B1 (en) 2008-07-09

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EP (1) EP1852256B1 (en)
CN (1) CN101066638B (en)
DE (2) DE102006020957A1 (en)

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DE102008025997B4 (en) 2008-05-29 2012-10-04 Windmöller & Hölscher Kg Color or printing unit of a printing press
DE102009028214B4 (en) * 2009-08-04 2016-06-02 Kba-Meprint Ag Positioning device of two cylinders and a method for positioning of cylinders
DE102009028201B4 (en) 2009-08-04 2016-06-09 Kba-Meprint Ag Printing machine and a method for handling cylinders
DE102009028204A1 (en) 2009-08-04 2011-02-17 Kba-Metronic Aktiengesellschaft Diagonalregistereinstellvorrichtung
DE102009028208B4 (en) 2009-08-04 2017-04-13 Koenig & Bauer Ag Coupling device of a cylinder of a printing machine and a method for coupling a cylinder of a printing press
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CN101066638B (en) 2010-08-04
DE102006020957A1 (en) 2007-11-08
CN101066638A (en) 2007-11-07
EP1852256A1 (en) 2007-11-07
DE502007000038D1 (en) 2008-08-21

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