EP1928661B1 - Diagonal engagement and disengagement of rubber blanket cylinders on a satellite cylinder - Google Patents

Diagonal engagement and disengagement of rubber blanket cylinders on a satellite cylinder Download PDF

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Publication number
EP1928661B1
EP1928661B1 EP06775158A EP06775158A EP1928661B1 EP 1928661 B1 EP1928661 B1 EP 1928661B1 EP 06775158 A EP06775158 A EP 06775158A EP 06775158 A EP06775158 A EP 06775158A EP 1928661 B1 EP1928661 B1 EP 1928661B1
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EP
European Patent Office
Prior art keywords
printing
cylinder
central cylinder
cylinders
printing cylinders
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EP06775158A
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German (de)
French (fr)
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EP1928661A1 (en
Inventor
Andres Miescher
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Wifag Maschinenfabrik AG
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Wifag Maschinenfabrik AG
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/10—Rotary lithographic machines for offset printing using one impression cylinder co-operating with several transfer cylinders for printing on sheets or webs, e.g. satellite-printing units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/13—Machines with double or multiple printing units for "flying" printing plates exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

  • This change in the quality of the printed image can have various causes, such as displacements in the register, wear of the cylinder surfaces, wear of mechanical parts, such as bearings, permanent deformations of cylinders.
  • the invention has for its object to provide a rotary printing press and a method for changing pads on such a machine, in which the switching on and off of the impression cylinder to the central cylinder is effected so that the forces acting on the central cylinder forces are minimized.
  • the printing cylinder for example blanket cylinder, which form a pressure nip with the central cylinder only in pairs to the central cylinder, such as satellite cylinder, on and off.
  • the pressure cylinders form a pair, which lie diagonally opposite each other via the central cylinder.
  • From the US 2,542,229 is a rotary printing machine with a central cylinder and two diagonally across the central cylinder arranged opposite pressure cylinders known.
  • the impression cylinders can be simultaneously parked by means of a crank from the central cylinder and adjusted to the central cylinder.
  • the DE 102 10 561 A1 describes a satellite sheet-fed rotary printing unit having means for simultaneously and simultaneously adjusting and holding a plurality of printing units to the satellite cylinder.
  • From the US 942,934 a printing press is known in which printing cylinder individually or more can be turned off simultaneously for printing to a counter-pressure cylinder and from this.
  • the FR 2485990 A1 describes a printing press with a central cylinder to the multiple printing units simultaneously on and off.
  • From the US 2,042,060 a printing press is known in which a plurality of printing cylinder synchronously to a central impression cylinder and can be turned off by this.
  • the invention claims a rotary printing machine, preferably a web-fed rotary printing machine for newspaper printing, which has a printing unit with a central cylinder and two printing cylinders, each of which forms a printing nip with the central cylinder.
  • the two pressure cylinders are arranged diagonally opposite each other via the central cylinder and can only be switched on and off at the same time from the central cylinder to the central cylinder.
  • Each of the two impression cylinders is each a forme cylinder, e.g. Plate cylinder, assigned.
  • the printing unit has a central cylinder with four printing cylinders and four associated therewith form cylinders.
  • the two pressure cylinders which lie diagonally opposite each other via the central cylinder, form a pressure cylinder pair.
  • Each of these pairs of printing cylinders can be switched on and off independently of the other pair of printing cylinders to the central cylinder, wherein the printing cylinder pair forming pressure cylinder are only adjusted synchronously.
  • This exclusively synchronous or simultaneous adjustment movement of the printing cylinder pairs can be provided on site by appropriate coupling of the cylinder pairs, or it can be effected by a controller, for example by the machine control of the printing press.
  • a controller for example by the machine control of the printing press.
  • the electronic control of the arrival and Anstellterrorism the pairs of printing cylinders as it comes in a mechanical control over time by natural wear to unpleasantness when turning on and off.
  • the cylinder coupling or the controller is designed so that it allows only a synchronous on and off the printing cylinder of each pair of printing cylinders to the central cylinder.
  • the forces acting perpendicularly on the axis of rotation of the central cylinder which occur in particular when the printing cylinder is adjusted to the central cylinder, cancel each other as far as possible. This leads to a reduced mechanical load on the central cylinder per setting operation and thus to a longer service life of the central cylinder and lower maintenance and repair costs.
  • the on and off of the printing cylinder pairs to the central cylinder can be done simultaneously. According to the invention, one after the other. Thus, while one of the printing cylinder pair is turned on and prints on the central cylinder, another pair of printing cylinders may be offset from the central cylinder.
  • On the form cylinders of the parked printing cylinder pair can e.g. a plate change done by means of a printing form manipulator.
  • the printing pair of printing cylinders can first be turned off by the central cylinder and then the other pair of printing cylinders can be adjusted to the central cylinder.
  • the other pair of printing cylinders can first be turned on and only then can the first pair of printing cylinders be turned off.
  • the forme cylinders used in the rotary machine can have a slightly convex surface, they can be cambered. What is meant is that the forme cylinders, starting from identical cylinder diameters on the two sides, have a continuously increasing diameter towards the middle and the largest cylinder diameter lies exactly in the center of the cylinder, seen in the axial direction. The increase in the cylinder diameter from both sides towards the middle is identical.
  • the zero point is exactly at the point of the axial center of the Cartesian coordinate system Cylinder
  • the values y at each position of the x-axis in the plus and minus regions are identical, the maximum of y is at the zero point.
  • printing units of the invention will find their use in 6/2 or 4/1 printing presses. Less preferred, but not excluded, is their use in 6/1 presses or other types of presses.
  • the linings of the form cylinder by means of a printing form manipulator, which are assigned to the parked printing cylinders.
  • FIG. 1 shows a satellite printing unit with a central cylinder 3, four each with this one pressure nip forming cylinders 1 and these associated cylinders 2.
  • the four cylinders 1 form two printing cylinder pairs 4, 5 and are all employed on the central cylinder 3 and transmit a printed image on the fabric to be printed ,
  • FIG. 2 shows a satellite printing unit with a central cylinder 3 and two pairs of pressure cylinders 4, 5 which are each formed by printing cylinders 1, which are located across the central cylinder 3 diagonally opposite. While the one printing cylinder pair 4 is present at the central cylinder and prints, the second pair of printing cylinders 5 is turned off by central cylinder 3 and does not print. In this state, on the second Pair of printing cylinders 5 preparatory work, eg printing plate change by means of a printing form manipulator, are carried out in the run of a print production change.
  • preparatory work eg printing plate change by means of a printing form manipulator
  • the printing cylinder 1 When changing production, the printing cylinder 1 can first be turned off from the central cylinder 3 together. After this pair of cylinders 4 has reached its end position, then the prepared pair of pressure cylinders 5 can be made to the central cylinder 3. In this case, the central cylinder 3 would run for a short period of time without salaried printing cylinder 1, which means that the printing web does not experience any guidance through the pressure gaps formed between printing cylinder pair 4, 5 and central cylinder 3 over this period of time.
  • the pressure cylinder pair 5 can be made to the central cylinder, so that for a moment all four printing cylinder 1 pending and print on the central cylinder 3, and only in the second cut the pair of printing cylinders 4 are released from the central cylinder 3 and moved into the assembly position.
  • the central cylinder is in this case always a pair of pressure cylinders 4, 5, the pressure path is at any moment without guidance through the nip.
  • a third alternative is the simultaneous turning on and off of the pairs of cylinders 4, 5. This solution takes less time than the sequential stopping and hiring the impression cylinder pairs 4, 5, but also leaves the pressure path for this shortened period of time without guidance through the pressure column.
  • the forces acting on the central cylinder 3 forces of the printing cylinder pair 4 are represented by the arrows F1 and F2. It can be seen that the forces acting on the central cylinder 3, are the same size but opposite. This means that just at the critical moment of the employment of the printing cylinder pair 4, 5 never a sudden one-sided load of the central cylinder 3 occurs, but at any moment a balance of Anstell concept on the central cylinder 3 prevails. This will be a one-sided deformation of the central cylinder 3 is avoided, which reduces the risk of damage to the central cylinder by one-sided load, whereby the maintenance intervals are extended and its life is increased.

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

Abstract

Rotary press, preferably a web-fed rotary press, comprising a print group with a central cylinder (3) and two impression cylinders (1), each forming a printing gap with the central cylinder (3). The two impression cylinders (1) are arranged diagonally opposite each other across the central cylinder and the two impression cylinders (1) form an impression cylinder pair (4, 4, 5, 5), which can only be engaged and disengaged from the central cylinder (3) simultaneously.

Description

Mit zunehmender Laufzeit von Druckmaschinen kommt es zu Qualitätsverlusten beim Druckbild. Diese Veränderung der Qualität des Druckbildes kann verschiedene Ursachen haben, wie zum Beispiel Verschiebungen im Register, Abnutzung der Zylinderoberflächen, Verschleiß mechanischer Teile, wie Lager, dauerhafte Verformungen von Zylindern.As the runtime of printing presses increases, the quality of the printed image decreases. This change in the quality of the printed image can have various causes, such as displacements in the register, wear of the cylinder surfaces, wear of mechanical parts, such as bearings, permanent deformations of cylinders.

Aufgrund einer zunehmenden Vielfalt von Druckprodukten kommt der flexiblen Umstellung einer Rotationsdruckmaschine beim Wechsel von einem Druckprodukt zum anderen immer größere Bedeutung zu. Dies drückt sich unter anderem dadurch aus, dass Wechsel der Druckprodukte bei laufender Druckproduktion immer häufiger vorkommen. Bei Druckwerken mit einem Zentralzylinder wird beim Anstellen einzelner oder mehrerer Druckzylinder jedes Mal der Zentralzylinder durch die Anstellkräfte mechanisch belastet, was zu schnellerer Materialermüdung führt und daher die Lebensdauer des Zentralzylinders verkürzt, bzw. zu Schäden am Zylinder bei laufender Produktion führen kann.Due to an increasing variety of printed products, the flexible changeover of a rotary printing press is becoming increasingly important when changing from one printed product to another. Among other things, this is expressed by the fact that changes in printed products are becoming more frequent during ongoing print production. In printing units with a central cylinder, the central cylinder is mechanically loaded by the Anstellkräfte when hiring single or multiple pressure cylinders each time, which leads to faster material fatigue and therefore shortens the life of the central cylinder, or can lead to damage to the cylinder during production.

Die Erfindung hat sich zur Aufgabe gemacht, eine Rotationsdruckmaschine und ein Verfahren zum Wechseln von Belägen an solch einer Maschine zu schaffen, bei der das An- und Abstellen der Druckzylinder an den Zentralzylinder so bewirkt wird, dass die auf den Zentralzylinder wirkenden Kräfte minimiert werden.The invention has for its object to provide a rotary printing press and a method for changing pads on such a machine, in which the switching on and off of the impression cylinder to the central cylinder is effected so that the forces acting on the central cylinder forces are minimized.

Diese Aufgabe wird durch die Gegenstände der unabhängigen Ansprüche 1 und 8 gelöst.This object is solved by the subject-matter of independent claims 1 and 8.

Erfindungsgemäß werden die Druckzylinder, z.B. Gummituchzylinder, die mit dem Zentralzylinder einen Druckspalt bilden nur paarweise an den Zentralzylinder, z.B. Satellitenzylinder, an- und abgestellt. Dabei bilden jeweils die Druckzylinder ein Paar, die sich über den Zentralzylinder diagonal gegenüber liegen. Durch diese An- und Abstellsystematik können sich die durch die Druckzylinder auf den Zentralzylinder wirkenden Kräfte im Wesentlichen aufheben.According to the invention, the printing cylinder, for example blanket cylinder, which form a pressure nip with the central cylinder only in pairs to the central cylinder, such as satellite cylinder, on and off. In each case, the pressure cylinders form a pair, which lie diagonally opposite each other via the central cylinder. Through this arrival and Abstellsystematik can substantially cancel the forces acting on the central cylinder by the pressure cylinder.

Aus der EP 0 710 558 B1 ist das An- und Abstellen von Druckzylindern an einen Zentralzylinder bei laufender Produktion bekannt. In Figur 3 wird gezeigt, dass bei Druckwerken mit einem Zentralzylinder 6 und vier zugeordneten Druckzylindern 2 entweder alle Druckzylinder 2 am Zentralzylinder 6 an- bzw. von ihm abgestellt sind.From the EP 0 710 558 B1 is the on and off of printing cylinders to a central cylinder during production known. In Figure 3 it is shown that in printing units with a central cylinder 6 and four associated printing cylinders 2 either all printing cylinder 2 on the central cylinder 6 on or are turned off by him.

Aus der US 2,542,229 ist eine Rotationsdruckmaschine mit einem Zentralzylinder und zwei sich über den Zentralzylinder diagonal gegenüberliegend angeordnete Druckzylindern bekannt. Die Druckzylinder können mittels einer Kurbel gleichzeitig von dem Zentralzylinder abgestellt und an den Zentralzylinder angestellt werden. Die DE 102 10 561 A1 beschreibt eine Satelliten-Bogenrotationsdruckeinheit mit einer Vorrichtung zum gemeinsamen und gleichzeitigen Einstellen und Halten einer Mehrzahl von Druckwerken zum Satellitenzylinder. Aus der US 942,934 ist eine Druckmaschine bekannt, bei der Druckzylinder einzeln oder mehrere simultan zum Drucken an einen Gegendruckzylinder an und von diesem abgestellt werden können. Die FR 2485990 A1 beschreibt eine Druckmaschine mit einem Zentralzylinder an den mehrere Druckwerke gleichzeitig an- und abstellbar sind. Aus der US 2,042,060 ist eine Druckmaschine bekannt, bei der mehrere Druckzylinder synchron an einen zentralen Gegendruckzylinder an- und von diesem abgestellt werden können.From the US 2,542,229 is a rotary printing machine with a central cylinder and two diagonally across the central cylinder arranged opposite pressure cylinders known. The impression cylinders can be simultaneously parked by means of a crank from the central cylinder and adjusted to the central cylinder. The DE 102 10 561 A1 describes a satellite sheet-fed rotary printing unit having means for simultaneously and simultaneously adjusting and holding a plurality of printing units to the satellite cylinder. From the US 942,934 a printing press is known in which printing cylinder individually or more can be turned off simultaneously for printing to a counter-pressure cylinder and from this. The FR 2485990 A1 describes a printing press with a central cylinder to the multiple printing units simultaneously on and off. From the US 2,042,060 a printing press is known in which a plurality of printing cylinder synchronously to a central impression cylinder and can be turned off by this.

Demgegenüber beansprucht die Erfindung eine Rotationsdruckmaschine, vorzugsweise eine Rollenrotationsdruckmaschine für den Zeitungsdruck, die ein Druckwerk aufweist mit einem Zentralzylinder und zwei Druckzylindern, von denen jeder mit dem Zentralzylinder einen Druckspalt bildet. Dabei sind die zwei Druckzylinder über den Zentralzylinder diagonal gegenüber liegend angeordnet und können nur gleichzeitig an den Zentralzylinder an- und von dem Zentralzylinder abgestellt werden. Jedem der zwei Druckzylinder ist jeweils ein Formzylinder, z.B. Plattenzylinder, zugeordnet.In contrast, the invention claims a rotary printing machine, preferably a web-fed rotary printing machine for newspaper printing, which has a printing unit with a central cylinder and two printing cylinders, each of which forms a printing nip with the central cylinder. In this case, the two pressure cylinders are arranged diagonally opposite each other via the central cylinder and can only be switched on and off at the same time from the central cylinder to the central cylinder. Each of the two impression cylinders is each a forme cylinder, e.g. Plate cylinder, assigned.

Nach der Erfindung weist das Druckwerk einen Zentralzylinder mit vier Druckzylindern und vier diesen zugeordneten Formzylindern auf. Dabei bilden jeweils die beiden Druckzylinder, die sich über den Zentralzylinder diagonal gegenüber liegen ein Druckzylinderpaar. Jedes dieser Druckzylinderpaare kann unabhängig von dem anderen Druckzylinderpaar an den Zentralzylinder an- und abgestellt werden, wobei die ein Druckzylinderpaar bildenden Druckzylinder nur synchron verstellt werden.According to the invention, the printing unit has a central cylinder with four printing cylinders and four associated therewith form cylinders. In each case, the two pressure cylinders, which lie diagonally opposite each other via the central cylinder, form a pressure cylinder pair. Each of these pairs of printing cylinders can be switched on and off independently of the other pair of printing cylinders to the central cylinder, wherein the printing cylinder pair forming pressure cylinder are only adjusted synchronously.

Diese ausschlieBlich synchrone oder gleichzeitige Verstellbewegung der Druckzylinderpaare kann bauseitig durch entsprechende Koppelung der Zylinderpaare gegeben sein, oder sie kann durch eine Steuerung, z.B. durch die Maschinensteuerung der Druckmaschine bewirkt werden. Bevorzugt ist die elektronische Steuerung der An- und Anstellbewegung der Druckzylinderpaare, da es bei einer mechanischen Steuerung im Laufe der Zeit durch natürlichen Verschleiß zu Ungenanigkeiten beim An- und Abstellen kommt.This exclusively synchronous or simultaneous adjustment movement of the printing cylinder pairs can be provided on site by appropriate coupling of the cylinder pairs, or it can be effected by a controller, for example by the machine control of the printing press. Preferably, the electronic control of the arrival and Anstellbewegung the pairs of printing cylinders, as it comes in a mechanical control over time by natural wear to unpleasantness when turning on and off.

Besonders bevorzugt ist die Zylinderkopplung bzw. die Steuerung so ausgebildet, dass sie ausschließlich ein synchrones An- und Abstellen der Druckzylinder jedes Druckzylinderpaares an den Zentralzylinder zulässt. Dadurch können sich die senkrecht auf die Rotationsachse des Zentralzylinders wirkenden Kräfte, die insbesondere bei dem Anstellen der Druckzylinder an den Zentralzylinder auftreten, gegenseitig weitestgehend aufheben. Dies führt zu einer reduzierten mechanischen Belastung des Zentralzylinders pro Stellvorgang und somit zu einer längeren Lebensdauer des Zentralzylinders und geringerem Wartungs- und Reparaturaufwand.Particularly preferably, the cylinder coupling or the controller is designed so that it allows only a synchronous on and off the printing cylinder of each pair of printing cylinders to the central cylinder. As a result, the forces acting perpendicularly on the axis of rotation of the central cylinder, which occur in particular when the printing cylinder is adjusted to the central cylinder, cancel each other as far as possible. This leads to a reduced mechanical load on the central cylinder per setting operation and thus to a longer service life of the central cylinder and lower maintenance and repair costs.

Das An- und Abstellen der Druckzylinderpaare an den Zentralzylinder kann gleichzeitig erfolgen. Erfindungsgemäß erfolgtes nacheinander. So kann, während eines der Druckzylinderpaar an den Zentralzylinder angestellt ist und druckt, ein anderes Druckzylinderpaar vom Zentralzylinder abgestellt sein. An den Formzylindern des abgestellten Druckzylinderpaars kann z.B. ein Plattenwechsel mittels eines Druckformmanipulators erfolgen. Bei einem Druckproduktwechsel bei laufender Rotationsdruckmaschine kann zuerst das druckende Druckzylinderpaar von Zentralzylinder abgestellt und daraufhin das andere Druckzylinderpaar an den Zentralzylinder angestellt werden. Ebenso gut kann aber auch zunächst das andere Druckzylinderpaar angestellt und erst danach das erste Druckzylinderpaar abgestellt werden. Schließlich ist es auch denkbar das An- und Abstellen der Druckzylinderpaare zu synchronisieren, was in einem gleichzeitigen aber in gegenläufige Richtung wirkenden Verstellen der Druckzylinderpaare resultiert.The on and off of the printing cylinder pairs to the central cylinder can be done simultaneously. According to the invention, one after the other. Thus, while one of the printing cylinder pair is turned on and prints on the central cylinder, another pair of printing cylinders may be offset from the central cylinder. On the form cylinders of the parked printing cylinder pair can e.g. a plate change done by means of a printing form manipulator. In a print product change while the rotary printing machine is running, the printing pair of printing cylinders can first be turned off by the central cylinder and then the other pair of printing cylinders can be adjusted to the central cylinder. Just as well, however, the other pair of printing cylinders can first be turned on and only then can the first pair of printing cylinders be turned off. Finally, it is also conceivable to synchronize the on and off of the printing cylinder pairs, resulting in a simultaneous but acting in opposite directions adjustment of the printing cylinder pairs.

Die in der Rotationsmaschine eingesetzten Formzylinder können eine leicht nach außen gewölbte Oberfläche haben, sie können bombiert sein. Gemeint ist, dass die Formzylinder, ausgehend von identischen Zylinderdurchmessern an den beiden Seiten, zur Mitte hin einen kontinuierlich anwachsenden Durchmesser haben und der größte Zylinderdurchmesser exakt in der Mitte des Zylinders, gesehen in Axialrichtung, liegt. Die Zunahme des Zylinderdurchmessers von beiden Seiten zur Mitte hin ist identisch. Das heißt, nimmt man die Formzlinderlängsachse als X-Achse eines kartesischen Koordinatensystems und legt den Nullpunkt genau auf den Punkt der axialen Mitte des Zylinders, so sind die Werte y an jeder Stelle der x-Achse im Plus- und Minusbereich identisch, das Maximum von y liegt im Nullpunkt.The forme cylinders used in the rotary machine can have a slightly convex surface, they can be cambered. What is meant is that the forme cylinders, starting from identical cylinder diameters on the two sides, have a continuously increasing diameter towards the middle and the largest cylinder diameter lies exactly in the center of the cylinder, seen in the axial direction. The increase in the cylinder diameter from both sides towards the middle is identical. In other words, taking the longitudinal axis of the forming cylinder as the X axis of a Cartesian coordinate system, the zero point is exactly at the point of the axial center of the Cartesian coordinate system Cylinder, the values y at each position of the x-axis in the plus and minus regions are identical, the maximum of y is at the zero point.

Bevorzugt werden erfindungsgemäße Druckwerke ihren Einsatz in 6/2- oder 4/1-Druckmaschinen finden. Weniger bevorzugt, jedoch nicht ausgeschlossen ist ihre Verwendung in 6/1-Druckmaschinen oder Druckmaschinen anderer Bauart.Preferably, printing units of the invention will find their use in 6/2 or 4/1 printing presses. Less preferred, but not excluded, is their use in 6/1 presses or other types of presses.

Beansprucht wird ferner das Verfahren zum Wechseln von Belägen in einer erfindungsgemäßen Rotationsdruckmaschine. Dabei können z.B. bei laufender Produktion die Beläge der Formzylinder mittels eines Druckformmanipulators gewechselt werden, die den abgestellten Druckzylindern zugeordnet sind.Also claimed is the method for changing coverings in a rotary printing press according to the invention. Thereby, e.g. be changed in running production, the linings of the form cylinder by means of a printing form manipulator, which are assigned to the parked printing cylinders.

Bevorzugte Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Figuren beschrieben. Dabei werden weitere Merkmale und Vorteile der Erfindung offenbart. Es zeigen:

Figur 1
Satellitendruckwerk mit vier angestellten Druckzylindern
Figur 2
Satellitendruckwerk mit zwei Druckzylinderpaaren, wobei ein Paar am Zylinder angestellt, das andere von Zylinder abgestellt ist.
Preferred embodiments of the invention will be described below with reference to the figures. In this case, further features and advantages of the invention are disclosed. Show it:
FIG. 1
Satellite printing unit with four employed printing cylinders
FIG. 2
Satellite printing unit with two pairs of printing cylinders, one pair on the cylinder turned on, the other of cylinders off.

Figur 1 zeigt ein Satellitendruckwerk mit einem Zentralzylinder 3, vier mit diesem je einen Druckspalt bildenden Druckzylindern 1 und diesen zugeordneten Formzylindern 2. Die vier Druckzylinder 1 bilden zwei Druckzylinderpaare 4, 5 und sind alle an den Zentralzylinder 3 angestellt und übertragen ein Druckbild auf die zu bedruckende Stoffbahn. FIG. 1 shows a satellite printing unit with a central cylinder 3, four each with this one pressure nip forming cylinders 1 and these associated cylinders 2. The four cylinders 1 form two printing cylinder pairs 4, 5 and are all employed on the central cylinder 3 and transmit a printed image on the fabric to be printed ,

Figur 2 zeigt ein Satellitendruckwerk mit einem Zentralzylinder 3 und zwei Druckzylinderpaaren 4, 5 die jeweils von Druckzylindern 1 gebildet werden, die sich über den Zentralzylinder 3 diagonal gegenüber liegen. Während das eine Druckzylinderpaar 4 am Zentralzylinder ansteht und druckt, ist das zweite Druckzylinderpaar 5 von Zentralzylinder 3 abgestellt und druckt nicht. In diesem Zustand können am zweiten Druckzylinderpaar 5 vorbereitende Arbeiten, z.B. Druckplattenwechsel mittels eines Druckformmanipulators, im Vorlauf eines Druckproduktionswechsels durchgeführt werden. FIG. 2 shows a satellite printing unit with a central cylinder 3 and two pairs of pressure cylinders 4, 5 which are each formed by printing cylinders 1, which are located across the central cylinder 3 diagonally opposite. While the one printing cylinder pair 4 is present at the central cylinder and prints, the second pair of printing cylinders 5 is turned off by central cylinder 3 and does not print. In this state, on the second Pair of printing cylinders 5 preparatory work, eg printing plate change by means of a printing form manipulator, are carried out in the run of a print production change.

Beim Produktionswechsel können zuerst die druckenden Zylinder 1 gemeinsam vom Zentralzylinder 3 abgestellt werden. Nachdem dieses Zylinderpaar 4 seine Endposition erreicht hat, kann anschließend das vorbereitete Druckzylinderpaar 5 an den Zentralzylinder 3 angestellt werden. In diesem Fall würde der Zentralzylinder 3 für eine kurze Zeitspanne ohne angestellten Druckzylinder 1 laufen, das bedeutet, dass die Druckbahn über diese Zeitspanne keine Führung durch die zwischen Druckzylinderpaar 4, 5 und Zentralzylinder 3 gebildeten Druckspalte erfährt.When changing production, the printing cylinder 1 can first be turned off from the central cylinder 3 together. After this pair of cylinders 4 has reached its end position, then the prepared pair of pressure cylinders 5 can be made to the central cylinder 3. In this case, the central cylinder 3 would run for a short period of time without salaried printing cylinder 1, which means that the printing web does not experience any guidance through the pressure gaps formed between printing cylinder pair 4, 5 and central cylinder 3 over this period of time.

Ebenso gut kann aber auch zuerst das Druckzylinderpaar 5 an den Zentralzylinder angestellt werden, so dass für einen Moment alle vier Druckzylinder 1 am Zentralzylinder 3 anstehen und drucken, und erst im zweiten Schnitt das Druckzylinderpaar 4 von Zentralzylinder 3 gelöst und in die Bestückungsstellung gefahren werden. Am Zentralzylinder steht in diesem Fall immer ein Paar von Druckzylindern 4, 5 an, die Druckbahn ist in keinem Moment ohne Führung durch den Druckspalt. Diese Lösung hat den weiteren Vorteil, dass der Zeitverlust und somit der Anfall von Makulatur minimiert wird.But just as well, first, the pressure cylinder pair 5 can be made to the central cylinder, so that for a moment all four printing cylinder 1 pending and print on the central cylinder 3, and only in the second cut the pair of printing cylinders 4 are released from the central cylinder 3 and moved into the assembly position. At the central cylinder is in this case always a pair of pressure cylinders 4, 5, the pressure path is at any moment without guidance through the nip. This solution has the further advantage that the loss of time and thus the accumulation of waste is minimized.

Eine dritte Alternative ist das gleichzeitige An- und Abstellen der Zylinderpaare 4, 5. Diese Lösung benötigt weniger Zeit, als das aufeinander folgende Abstellen und Anstellen der Druckzylinderpaare 4, 5, lässt aber ebenfalls die Druckbahn für diese verkürzte Zeitspanne ohne Führung durch die Druckspalte.A third alternative is the simultaneous turning on and off of the pairs of cylinders 4, 5. This solution takes less time than the sequential stopping and hiring the impression cylinder pairs 4, 5, but also leaves the pressure path for this shortened period of time without guidance through the pressure column.

Die auf den Zentralzylinder 3 wirkenden Kräfte des Druckzylinderpaares 4 werden durch die Pfeile F1 und F2 repräsentiert. Es ist zu erkennen, dass die Kräfte, die auf den Zentralzylinder 3 wirken, gleichgroß aber entgegengerichtet sind. Dies bedeutet, dass gerade im kritischen Moment des Anstellens des Druckzylinderpaares 4, 5 niemals eine schlagartige einseitige Belastung des Zentralzylinders 3 auftritt, sondern in jedem Moment ein Gleichgewicht der Anstellkräfte am Zentralzylinder 3 herrscht. Dadurch wird eine einseitige Deformation des Zentralzylinders 3 vermieden, was die Gefahr von Schäden am Zentralzylinder durch einseitige Belastung vermindert, wodurch dessen Wartungsinterwalle verlängert und seine Lebensdauer erhöht werden.The forces acting on the central cylinder 3 forces of the printing cylinder pair 4 are represented by the arrows F1 and F2. It can be seen that the forces acting on the central cylinder 3, are the same size but opposite. This means that just at the critical moment of the employment of the printing cylinder pair 4, 5 never a sudden one-sided load of the central cylinder 3 occurs, but at any moment a balance of Anstellkräfte on the central cylinder 3 prevails. This will be a one-sided deformation of the central cylinder 3 is avoided, which reduces the risk of damage to the central cylinder by one-sided load, whereby the maintenance intervals are extended and its life is increased.

Claims (9)

  1. A rotary printing machine,
    a) comprising a printing unit featuring a central cylinder (3) and two printing cylinders (1) which each form a printing gap with the central cylinder (3),
    b) wherein the two printing cylinders (1) are arranged diagonally opposite each other across the central cylinder (3), and
    c) the two printing cylinders (1) form a pair of printing cylinders (4; 5) which can only be applied to or retracted from the central cylinder (3) simultaneously,
    d) wherein the printing unit comprises two additional printing cylinders (1) arranged diagonally opposite each other across the central cylinder (3), and the two additional printing cylinders (1) form an additional pair of printing cylinders (4; 5) which can only be applied to or retracted from the central cylinder (3) simultaneously,
    characterised in that
    e) the rotary printing machine is designed such that when the two pairs of printing cylinders (4; 5) are applied to and/or retracted from the central cylinder (3), the first/second pair of printing cylinders (4; 5) is applied chronologically before the second/first pair of printing cylinders (5; 4) and retracted chronologically after the second/first pair of printing cylinders (5; 4).
  2. The rotary printing machine according to claim 1, wherein each of the printing cylinders (1) is assigned a form cylinder (2).
  3. The rotary printing machine according to any one of the preceding claims, wherein the first and second pair of printing cylinders (4; 5) can be applied to and/or retracted from the central cylinder (3) simultaneously.
  4. The rotary printing machine according to any one of the preceding claims, wherein the pairs of printing cylinders (4; 5) are applied to and/or retracted from the central cylinder (3) by a mechanical or electronic control means.
  5. The rotary printing machine according to the preceding claim, wherein the control means only allows the pairs of printing cylinders (4; 5) to be applied to and/or retracted from the central cylinder (3) simultaneously.
  6. The rotary printing machine according to any one of the preceding claims, wherein the form cylinder (2) exhibits a diameter which changes as viewed across its length, such that a cylinder diameter which is preferably the same on both sides of the cylinder increases continuously from the two sides towards the centre of the cylinder.
  7. The rotary printing machine according to any one of the preceding claims, characterised in that it is a web-fed printing machine.
  8. A method for changing films in a rotary printing machine comprising a satellite printing unit, wherein four printing cylinders (1) forming a printing gap with a central cylinder (3) form two pairs of printing cylinders (4; 5), wherein the printing cylinders (1) respectively forming a pair are diagonally opposite each other, and the printing cylinders (1) are only applied to and retracted from the central cylinder (3) in pairs.
  9. The method according to the preceding claim, wherein forces (F1; F2) which act perpendicularly on the rotational axis (R) of the central cylinder (3) from the printing cylinders (1), which are arranged diagonally opposite each other, when the printing cylinders (1) are applied cancel each other out.
EP06775158A 2005-09-16 2006-08-28 Diagonal engagement and disengagement of rubber blanket cylinders on a satellite cylinder Not-in-force EP1928661B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510044440 DE102005044440B4 (en) 2005-09-16 2005-09-16 Diagonal turning on and off of blanket cylinders to a satellite cylinder
PCT/CH2006/000465 WO2007030959A1 (en) 2005-09-16 2006-08-28 Diagonal engagement and disengagement of rubber blanket cylinders on a satellite cylinder

Publications (2)

Publication Number Publication Date
EP1928661A1 EP1928661A1 (en) 2008-06-11
EP1928661B1 true EP1928661B1 (en) 2012-06-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06775158A Not-in-force EP1928661B1 (en) 2005-09-16 2006-08-28 Diagonal engagement and disengagement of rubber blanket cylinders on a satellite cylinder

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EP (1) EP1928661B1 (en)
DE (1) DE102005044440B4 (en)
WO (1) WO2007030959A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US942923A (en) * 1908-03-27 1909-12-14 American Lithographic Co Printing-press.
US2042060A (en) * 1934-10-26 1936-05-26 John Waldron Corp Multicolor printing machine
US2542229A (en) * 1946-12-16 1951-02-20 Albert M Bojanower Plate cylindfr and ink roll mounting for printing presses
DD137557A1 (en) * 1978-07-17 1979-09-12 Harald Feustel PRINTERS OF OFFSET ROLL ROTATION MACHINES
FR2485990A1 (en) * 1980-07-03 1982-01-08 Holweg Const Mec Automatic loading feed for flexographic printing cylinders - has lifting and sliding brackets actuated by hydraulic cylinders
DE4447859B4 (en) * 1994-10-04 2007-02-22 Maschinenfabrik Wifag Rotary press
DE10210561B4 (en) * 2002-03-09 2004-11-04 Metronic Ag Device for setting and maintaining the distances between the blanket cylinders of a plurality of printing units of a satellite sheet-fed rotary printing unit from a common impression cylinder

Also Published As

Publication number Publication date
WO2007030959A1 (en) 2007-03-22
EP1928661A1 (en) 2008-06-11
DE102005044440B4 (en) 2007-09-13
DE102005044440A1 (en) 2007-03-29

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