EP1568494B1 - Device for realising variable format offset printing - Google Patents

Device for realising variable format offset printing Download PDF

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Publication number
EP1568494B1
EP1568494B1 EP04405119A EP04405119A EP1568494B1 EP 1568494 B1 EP1568494 B1 EP 1568494B1 EP 04405119 A EP04405119 A EP 04405119A EP 04405119 A EP04405119 A EP 04405119A EP 1568494 B1 EP1568494 B1 EP 1568494B1
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EP
European Patent Office
Prior art keywords
units
bearing
format
offset printing
printing
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Revoked
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EP04405119A
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German (de)
French (fr)
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EP1568494A1 (en
Inventor
Wolfgang Ruoff
Stefan Beyersdorff
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Mueller Martini Holding AG
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Mueller Martini Holding AG
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Application filed by Mueller Martini Holding AG filed Critical Mueller Martini Holding AG
Priority to EP04405119A priority Critical patent/EP1568494B1/en
Priority to US11/067,222 priority patent/US7389726B2/en
Priority to CNB200510052189XA priority patent/CN100564035C/en
Publication of EP1568494A1 publication Critical patent/EP1568494A1/en
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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
    • B41F13/44—Arrangements to accommodate interchangeable cylinders of different sizes to enable machine to print on areas of different sizes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/80—Means enabling or facilitating exchange of cylinders
    • B41P2213/804—Means enabling or facilitating exchange of cylinders radially

Definitions

  • the invention relates to a device for producing different printed image lengths in offset printing, with format parts with different cylinder diameter, which are interchangeable for a change of the print image length, according to the preamble of claim 1.
  • a device for producing different print image lengths in offset printing is known from US Pat DE 199 55 084 A known.
  • pressure sleeves with variable diameter are pushed onto cylinder cores or base cylinder of a full rotation offset printing press.
  • the cylinder cores are mounted in a frame on both sides, with one side of the frame is provided with a drive for the cylinder cores. The other side of the frame serves as an operating side for removing the pressure sleeves.
  • the pressure sleeves can be pushed onto the cylinder cores, these cylinder cores must be designed as air axes and the pressure sleeves, which form the format parts must have a compressible layer on the inner surface so that they can be slightly expanded and shaved over the air axis.
  • the EP 1 101 611 A also relates to an apparatus for producing different print image lengths in offset printing.
  • replaceable pressure sleeves are provided. These compression sleeves are mounted on swivel arms. So that the sleeves can be replaced, openings are incorporated on one of the two bearing plates, through which the pressure sleeves can be replaced. In this method or device also exist the above problems.
  • the DE 35 43 704 A relates to a device for printing a web. Again, sleeves are interchangeably mounted on a rotating body. So that the sleeves can be changed, a bearing plate can be folded down to the operating side. In an offset printing machine, such a hinged end shield is expensive.
  • the DE 19 53 4651 concerns a printing unit for indirect printing.
  • a form and a transfer cylinder are circumferentially variable with so-called sleeves different outer diameter can be fitted.
  • the US3606835 A discloses a printing machine for rotary offset printing in which different print image lengths are produced with size parts of different cylinder diameters.
  • the format parts each form a unit with a carrier wave, which are interchangeable when changing the print image length.
  • the printing press has in each case arranged at the ends of the carrier shafts pivot bearing and two mutually spaced bearing plates.
  • the units are mounted with the ends of the support shafts on the bearing plates and each have a fixed to the bearing plates holding device, with each of which a pivot bearing of a unit is fixed.
  • the holding device consists essentially of a vertical flange and a pivotally mounted on this holding element, which is releasably by means of a handle and then pivotable from a vertical holding position in a horizontal release position.
  • the invention has for its object to provide a device which avoids the disadvantages mentioned.
  • the object is solved by the features of the characterizing part of claim 1.
  • the device according to the invention in each case one unit of a format part and a carrier shaft is exchanged for a change in the print image length.
  • the carrier shaft can be designed with a very low weight and that the previous elastic layer on the inside of the format parts is not required.
  • the format parts can thus each be firmly connected to the carrier shaft, so that there is a secure torque transmission and a high dimensional stability.
  • the units mentioned are preferably designed as a blanket cylinder and plate cylinder.
  • the invention has the further advantage that the paper web does not have to be interrupted when changing the printed image length.
  • the units are in each case expanded and used substantially parallel to the axis of rotation of a unit during replacement.
  • the units are thus not introduced laterally through recesses of a bearing plate, but are moved between the bearing plates parallel to the rotation or drive axes.
  • This has the significant advantage that the bearings and drive parts can be stored on the bearing plates easier. Swiveling bearing arms or hinged bearing plates are not required. Since the carrier waves, as mentioned, can be produced with low weight, the units can also be replaced by hand. The unit then has a particularly low weight when the carrier shaft is hollow.
  • the said units each have at the ends of the support shaft on a pivot bearing with its own outer bearing shell, and are each interchangeable with these bearings.
  • the units thus each include the pivot bearing, each having its own bearing shell. Replacing the units is particularly easy in this case.
  • the pivot bearings are used in half shells and clamped, which are each arranged on an inner side of a bearing plate. With such storage, a particularly good concentricity can be achieved.
  • the Fig. 1 shows a device according to the invention, which is designed as a slot 1 for a not shown here printing unit of an offset printing press.
  • This drawer 1 has a plate cylinder 2 and a blanket cylinder 3, which are arranged between two mutually spaced bearing plates 19 and 20.
  • the usual inking unit 29 and the impression cylinder 28 are indicated by dashed lines the usual inking unit 29 and the impression cylinder 28.
  • the impression cylinder 28 and the inking unit 29 can be designed as known and are therefore not described here in detail.
  • the plate cylinder 2 and the blanket cylinder 3 each form a unit of a format part 6 and 7 and a support shaft 4 and 5.
  • the carrier shafts 4 and 5 each have on a laterally projecting pin 30 ( Fig. 2 )
  • the pivot bearing 10 are preferably fixedly mounted on the support shaft 4 and 5 and thus also form a solid unit with the support shaft 4 and 5 and the format part 6 and 7.
  • the pivot bearing 10 sit respectively Fig. 2 in a right holding device 11 and a left holding device 12.
  • the holding devices 11 and 12 for the plate cylinder 2 are slidably mounted in approximately horizontally extending guide slots 33 of the bearing plates 19 and 20 and can be moved in a change to adjust the axial distance. However, such a displacement is not mandatory.
  • the two holding devices 12 and 11 for the blanket cylinder 3 are slidably mounted in a guide slot 25 and 26 of the bearing plate 19 and 20, respectively.
  • the blanket cylinder 3 can thus be moved in the bearing slots 25 and 26. Thereby, the axis distance between the plate cylinder 2 and the blanket cylinder 3 can be adjusted.
  • drive shafts 34 are provided, on each of which a gear 31 of a transmission, not shown here is fixed.
  • the drive shafts 34 are mounted with rolling bearings 35 each in a housing 36.
  • clutches 32 the drive shafts 34 are respectively connected for the transmission of torque to the corresponding carrier shaft 4 and 5 respectively.
  • the holding devices 11 and 12 each consist of a lower half-shell 13 and an upper half-shell 15.
  • the lower half-shells 13 are each connected by fastening screws 17 fixed to one of the two bearing plates 19 and 20 and each have an open-topped semicircular recess 14, in which a pivot bearing 10 can be inserted from above.
  • the upper half shells 15 can each be folded away or otherwise removed from the lower half shell 13. Are the two upper half shells 15, as in FIG. 3 indicated, folded away, so the plate cylinder 2 and the blanket cylinder 3 can be used with the corresponding pivot bearings 10 from above into the lower half shells 13.
  • the outer bearing shells 10a are fixed by the upper half shells 15 are fixed with screws 18 on the lower bearing shells 13. For receiving the screws 18, the half-shell 15 has recesses 16.
  • the screws 18 can according to FIG. 1 are each actuated with a clamping lever 21.
  • the pivot bearing 10 of the plate cylinder 2 and the blanket cylinder 3 in FIG. 2 slightly shifted axially to the right, so that the carrier shaft 4 and 5 is coupled to the corresponding drive shaft 34.
  • the carrier shafts 4 and 5 are each fixedly connected to a format part 6 or 7, so that in each case a secure torque transmission from the carrier shaft 4 or 5 is ensured on the format part 6 and 7 and a high dimensional stability.
  • the connection between the support shaft 4 or 5 and the format part 6 or 7 may in particular be form-fitting, for example by the support shaft 4 and 5 in cross-section out of round and introduced into a corresponding non-circular passage of the format part 6 and 7 respectively.
  • other connections are also conceivable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)

Description

Die Ereindung betrifft eine Vorrichtung zur Herstellung unterschiedlicher Druckbildlängen im Offsetdruck, mit Formatteilen mit unterschiedlichem Zylinderdurchmesser, die für einen Wechsel der Druckbildlänge austauschbar sind, gemäss dem Oberbegriff des Anspruchs 1.The invention relates to a device for producing different printed image lengths in offset printing, with format parts with different cylinder diameter, which are interchangeable for a change of the print image length, according to the preamble of claim 1.

Eine Vorrichtung zum Herstellen unterschiedlicher Druckbildlängen im Offsetdruck ist aus der DE 199 55 084 A bekannt geworden. Bei dieser Vorrichtung werden auf Zylinderkerne bzw. Basiszylinder einer Vollrotations-Offset-Druckmaschine Druckhülsen mit veränderlichem Durchmesser aufgeschoben. Die Zylinderkerne sind in einem Gestell beidseitig gelagert, wobei die eine Seite des Gestells mit einem Antrieb für die Zylinderkerne versehen ist. Die andere Seite des Gestells dient als Bedienseite zur Entnahme der Druckhülsen. Damit die Druckhülsen auf die Zylinderkerne aufgeschoben werden können, müssen diese zylinderkerne als Luftachsen ausgebildet sein und die Druckhülsen, welche die Formatteile bilden, müssen an Innenfläche eine kompressible Schicht aufweisen, damit diese etwas aufgeweitet und über die Luftachse geschoren werden können. Diese elastischen bzw. kompressiblen Schichten haben jedoch den Nachteil, dass aufgrund der hohen Linienkräfte im Offsetdruck die Druckhülsen aus ihrer konzentrischen Lage herausgedrückt werden. Dies führt zu veränderten Einstellungen und somit zu erheblichen Druckproblemen. Im Flexodruck sind solche Luftachsen bzw. Druckhülsen seit langem bekannt. Da im Flexodruck jedoch im Wesentlichen geringere Druckkräfte im Druckspalt auftreten, ergeben sich hier die oben genannten Probleme nicht.A device for producing different print image lengths in offset printing is known from US Pat DE 199 55 084 A known. In this device, pressure sleeves with variable diameter are pushed onto cylinder cores or base cylinder of a full rotation offset printing press. The cylinder cores are mounted in a frame on both sides, with one side of the frame is provided with a drive for the cylinder cores. The other side of the frame serves as an operating side for removing the pressure sleeves. Thus, the pressure sleeves can be pushed onto the cylinder cores, these cylinder cores must be designed as air axes and the pressure sleeves, which form the format parts must have a compressible layer on the inner surface so that they can be slightly expanded and shaved over the air axis. These However, elastic or compressible layers have the disadvantage that due to the high line forces in offset printing, the printing sleeves are pushed out of their concentric position. This leads to changed settings and thus to considerable printing problems. In flexographic printing, such air axes or compression sleeves have long been known. However, since in flexographic printing substantially lower pressure forces occur in the nip, the above problems do not arise here.

Eine weitere Schwierigkeit dieser Vorrichtung besteht in der Drehmomentübertragung. Bei den bekannten Druckwerken im Offsetdruck besitzt die Luftachse einen bestimmten Durchmesser, der sich nach der kleinsten zu erzeugenden Drucklänge richtet. Soll die Drucklänge beispielsweise bei ca. 350 mm (13,8" Umfang) beginnen, so sollte die Luftachse einen maximalen Durchmesser von 105,158 mm aufweisen. Die gleiche Luftachse wird dann auch bei einer Drucklänge von etwa 609 mm (24", D = 194,04 mm) eingesetzt. Der Durchmesser der Luftachse ist hier aber nicht günstig. Dies kann zu wesentlichen Problemen im Aufbau der Druckhülsen und bei der Drehmomentübertragung führen.Another difficulty of this device is the transmission of torque. In the known printing units in offset printing, the air axis has a certain diameter, which depends on the smallest print length to be generated. For example, if the print length is to start at about 350 mm (13.8 "circumference), then the air axis should have a maximum diameter of 105.158 mm, and the same air axis will be compressed at a print length of about 609 mm (24", D = 194 , 04 mm). The diameter of the air axis is not favorable here. This can lead to significant problems in the construction of the compression sleeves and torque transmission.

Die EP 1 101 611 A betrifft ebenfalls eine Vorrichtung zum Herstellen unterschiedlicher Druckbildlängen im Offsetdruck. Hier sind ebenfalls auswechselbare Druckhülsen vorgesehen. Diese Druckhülsen sind an Schwenkarmen gelagert. Damit die Hülsen ausgewechselt werden können, sind an einer der beiden Lagerplatten Oeffnungen eingearbeitet, durch welche die Druckhülsen ausgetauscht werden können. Bei diesem Verfahren bzw. Vorrichtung bestehen ebenfalls die oben genannten Probleme.The EP 1 101 611 A also relates to an apparatus for producing different print image lengths in offset printing. Here also replaceable pressure sleeves are provided. These compression sleeves are mounted on swivel arms. So that the sleeves can be replaced, openings are incorporated on one of the two bearing plates, through which the pressure sleeves can be replaced. In this method or device also exist the above problems.

Die DE 35 43 704 A betrifft eine Vorrichtung zum Bedrucken einer Bahn. Auch hier sind Hülsen auswechselbar auf einem Drehkörper befestigt. Damit die Hülsen gewechselt werden können, ist ein Lagerschild zur Bedienseite abklappbar. Bei einer Offsetdruckmaschine ist ein solches abklappbares Lagerschild aufwendig.The DE 35 43 704 A relates to a device for printing a web. Again, sleeves are interchangeably mounted on a rotating body. So that the sleeves can be changed, a bearing plate can be folded down to the operating side. In an offset printing machine, such a hinged end shield is expensive.

Die DE 19 53 4651 betrifft ein Druckwerk für den indirekten Druck. Bei diesem ist vorgesehen, dass jeweils ein Form- und ein Übertragungszylinder umfangsvariabel mit sogenannten Sleeves unterschiedlichen Aussendurchmessers bestückbar sind.The DE 19 53 4651 concerns a printing unit for indirect printing. In this case, it is provided that in each case a form and a transfer cylinder are circumferentially variable with so-called sleeves different outer diameter can be fitted.

Die US3606835 A offenbart eine Druckmaschine für den Rotations-Offsetdruck, bei der unterschiedliche Druckbildlängen mit Formatteilen unterschiedlicher Zylinderdurchmesser hergestellt werden. Die Formatteile bilden jeweils mit einer Trägerwelle eine Einheit, welche bei einem Wechsel der Druckbildlänge austauschbar sind. Die Druckmaschine weist jeweils an den Enden der Trägerwellen angeordnete Drehlager sowie zwei im Abstand zueinander angeordnete Lagerplatten auf. Die Einheiten sind mit den Enden der Trägerwellen an den Lagerplatten gelagert und weisen jeweils einer an den Lagerplatten befestigte Haltevorrichtung auf, mit der jeweils ein Drehlager einer Einheit fixierbar ist. Die Haltevorrichtung besteht im Wesentlichen aus einem vertikalen Flansch und einem an diesem schwenkbar befestigten Halteelement, welches mittels eines Handgriffs lösbar und anschliessend aus einer vertikalen Haltestellung in eine horizontale Freigabestellung schwenkbar ist.The US3606835 A discloses a printing machine for rotary offset printing in which different print image lengths are produced with size parts of different cylinder diameters. The format parts each form a unit with a carrier wave, which are interchangeable when changing the print image length. The printing press has in each case arranged at the ends of the carrier shafts pivot bearing and two mutually spaced bearing plates. The units are mounted with the ends of the support shafts on the bearing plates and each have a fixed to the bearing plates holding device, with each of which a pivot bearing of a unit is fixed. The holding device consists essentially of a vertical flange and a pivotally mounted on this holding element, which is releasably by means of a handle and then pivotable from a vertical holding position in a horizontal release position.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen, welche die genannten Nachteile vermeidet.The invention has for its object to provide a device which avoids the disadvantages mentioned.

Die Aufgabe ist durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst. Nach der erfindungsgemässen Vorrichtung wird für eine Änderung der Druckbildlänge jeweils eine Einheit aus einem Formatteil und einer Trägerwelle ausgetauscht. Dies hat den wesentlichen Vorteil, dass die Trägerwelle mit einem sehr geringen Gewicht ausgeführt werden kann und dass die bisherige elastische Schicht an der Innenseite der Formatteile nicht erforderlich ist. Die Formatteile können somit jeweils fest mit der Trägerwelle verbunden werden, so dass sich eine sichere Drehmomentübertragung und eine hohe Formstabilität ergibt.
Bei der erfindungsgemässen Vorrichtung wird somit für einen Wechsel der Druckbildlängen wenigstens eine feste und nicht trennbare Einheit aus einem Formatteil und einer Trägerwelle ausgetauscht.
Die genannten Einheiten sind vorzugsweise als Gummituchzylinder und Plattenzylinder ausgebildet.
Die Erfindung hat den weiteren Vorteil, dass die Papierbahn beim Wechseln der Druckbildlänge nicht unterbrochen werden muss.The object is solved by the features of the characterizing part of claim 1. According to the device according to the invention, in each case one unit of a format part and a carrier shaft is exchanged for a change in the print image length. This has the significant advantage that the carrier shaft can be designed with a very low weight and that the previous elastic layer on the inside of the format parts is not required. The format parts can thus each be firmly connected to the carrier shaft, so that there is a secure torque transmission and a high dimensional stability.
In the apparatus according to the invention thus at least one fixed and not for a change of the print image lengths separable unit of a format part and a carrier shaft exchanged.
The units mentioned are preferably designed as a blanket cylinder and plate cylinder.
The invention has the further advantage that the paper web does not have to be interrupted when changing the printed image length.

Nach einer Weiterbildung der Erfindung ist vorgesehen, dass die Einheiten beim Auswechseln jeweils im Wesentlichen parallel zur Rotationsachse einer Einheit ausgebaut und eingesetzt werden. Die Einheiten werden somit nicht seitlich durch Ausnehmungen eines Lagerschildes eingeführt, sondern werden zwischen den Lagerschildern parallel zu den Rotations- bzw. Antriebsachsen bewegt. Dies hat den wesentlichen Vorteil, dass die Lager und Antriebsteile an den Lagerschildern einfacher gelagert werden können. Schwenkbare Lagerarme oder abklappbare Lagerschilder sind nicht erforderlich. Da die Trägerwellen -wie erwähnt- mit geringem Gewicht hergestellt werden können, lassen sich auch die Einheiten von Hand auswechseln.
Die Einheit besitzt dann ein besonders geringes Gewicht, wenn die Trägerwelle hohl ausgebildet ist.According to a development of the invention, it is provided that the units are in each case expanded and used substantially parallel to the axis of rotation of a unit during replacement. The units are thus not introduced laterally through recesses of a bearing plate, but are moved between the bearing plates parallel to the rotation or drive axes. This has the significant advantage that the bearings and drive parts can be stored on the bearing plates easier. Swiveling bearing arms or hinged bearing plates are not required. Since the carrier waves, as mentioned, can be produced with low weight, the units can also be replaced by hand.
The unit then has a particularly low weight when the carrier shaft is hollow.

Die genannten Einheiten weisen jeweils an den Enden der Trägerwelle ein Drehlager mit einer eigenen äusseren Lagerschale auf, und sind jeweils mit diesen Lagern auswechselbar . Die Einheiten umfassen somit jeweils auch die Drehlager, die jeweils eine eigene Lagerschale besitzen. Das Auswechseln der Einheiten ist in diesem Fall besonders einfach. Die Drehlager sind in Halbschalen eingesetzt und festgeklemmt, die jeweils an einer Innenseite einer Lagerplatte angeordnet sind. Mit einer solchen Lagerung kann ein besonders guter Rundlauf erreicht werden.The said units each have at the ends of the support shaft on a pivot bearing with its own outer bearing shell, and are each interchangeable with these bearings. The units thus each include the pivot bearing, each having its own bearing shell. Replacing the units is particularly easy in this case. The pivot bearings are used in half shells and clamped, which are each arranged on an inner side of a bearing plate. With such storage, a particularly good concentricity can be achieved.

Weitere vorteilhafte Merkmale ergeben sich aus den abhängigen Patentansprüchen, der nachfolgenden Beschreibung sowie der Zeichnung.Further advantageous features emerge from the dependent claims, the following description and the drawings.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
schematisch eine räumliche Ansicht einer erfindungsgemässen Vorrichtung, wobei an sich bekannte und für die Erfindung nicht wesentliche Teile weggelassen sind,
Fig. 2
einen Schnitt durch die Vorrichtung gemäss Figur 1 und
Fig. 3
eine Seitenansicht einer Einheit mit Haltevorrichtungen.
An embodiment of the invention will be explained in more detail with reference to the drawing. Show it:
Fig. 1
2 shows a schematic view of a device according to the invention, wherein parts which are known per se and are not essential to the invention are omitted,
Fig. 2
a section through the device according to FIG. 1 and
Fig. 3
a side view of a unit with holding devices.

Die Fig. 1 zeigt eine erfindungsgemässe Vorrichtung, die als Einschub 1 für ein hier nicht gezeigtes Druckwerk einer Offset-Druckmaschine ausgebildet ist. Dieser Einschub 1 weist einen Plattenzylinder 2 und einen Gummituchzylinder 3 auf, die zwischen zwei im Abstand zueinander angeordneten Lagerplatten 19 und 20 angeordnet sind. In der Fig. 2 sind mit gestrichelten Linien das übliche Farbwerk 29 und der Gegendruckzylinder 28 angedeutet. Der Gegendruckzylinder 28 und das Farbwerk 29 können wie bekannt ausgebildet sein und werden hier deshalb nicht näher beschrieben.The Fig. 1 shows a device according to the invention, which is designed as a slot 1 for a not shown here printing unit of an offset printing press. This drawer 1 has a plate cylinder 2 and a blanket cylinder 3, which are arranged between two mutually spaced bearing plates 19 and 20. In the Fig. 2 are indicated by dashed lines the usual inking unit 29 and the impression cylinder 28. The impression cylinder 28 and the inking unit 29 can be designed as known and are therefore not described here in detail.

Der Plattenzylinder 2 und der Gummituchzylinder 3 bilden jeweils eine Einheit aus einem Formatteil 6 bzw. 7 und einer Trägerwelle 4 bzw. 5. Zwischen dem Gummituchzylinder 3 und dem Gegendruckzylinder 28 verläuft wie üblich gemäss Fig. 2 eine endlose Papierbahn 27, welche von diesen beiden Zylindern bedruckt wird.The plate cylinder 2 and the blanket cylinder 3 each form a unit of a format part 6 and 7 and a support shaft 4 and 5. Between the blanket cylinder 3 and the impression cylinder 28 runs as usual according to Fig. 2 an endless paper web 27, which is printed by these two cylinders.

Die Trägerwellen 4 und 5 besitzen jeweils an einem seitlich vorragenden Zapfen 30 (Fig. 2) ein Drehlager 10, beispielsweise ein Kugel- oder Rollenlager oder ein anderes Wälzlager mit jeweils einer stehenden äusseren Lagerschale 10a. Die Drehlager 10 sind vorzugsweise fest auf der Trägerwelle 4 und 5 montiert und bilden damit ebenfalls eine feste Einheit mit der Trägerwelle 4 bzw. 5 und dem Formatteil 6 bzw. 7. Die Drehlager 10 sitzen jeweils gemäss Fig. 2 in einer rechten Haltevorrichtung 11 und einer linken Haltevorrichtung 12. Die Haltevorrichtungen 11 und 12 für den Plattenzylinder 2 sind in etwa horizontal verlaufenden Führungsschlitzen 33 der Lagerplatten 19 und 20 verschiebbar gelagert und können bei einem Wechsel zur Anpassung des Achsabstandes verschoben werden. Eine solche Verschiebbarkeit ist jedoch nicht zwingend. Die beiden Haltevorrichtungen 12 und 11 für den Gummituchzylinder 3 sind verschiebbar in einem Führungsschlitz 25 bzw. 26 der Lagerplatte 19 bzw. 20 gelagert. Der Gummituchzylinder 3 kann somit in den Lagerschlitzen 25 und 26 verschoben werden. Dadurch kann der Achsenabstand zwischen dem Plattenzylinder 2 und dem Gummituchzylinder 3 eingestellt werden.The carrier shafts 4 and 5 each have on a laterally projecting pin 30 ( Fig. 2 ) A pivot bearing 10, for example, a ball or roller bearings or other bearings, each with a stationary outer bearing shell 10a. The pivot bearing 10 are preferably fixedly mounted on the support shaft 4 and 5 and thus also form a solid unit with the support shaft 4 and 5 and the format part 6 and 7. The pivot bearing 10 sit respectively Fig. 2 in a right holding device 11 and a left holding device 12. The holding devices 11 and 12 for the plate cylinder 2 are slidably mounted in approximately horizontally extending guide slots 33 of the bearing plates 19 and 20 and can be moved in a change to adjust the axial distance. However, such a displacement is not mandatory. The two holding devices 12 and 11 for the blanket cylinder 3 are slidably mounted in a guide slot 25 and 26 of the bearing plate 19 and 20, respectively. The blanket cylinder 3 can thus be moved in the bearing slots 25 and 26. Thereby, the axis distance between the plate cylinder 2 and the blanket cylinder 3 can be adjusted.

Für den Drehantrieb des Plattenzylinders 2 und des Gummituchzylinders 3 sind Antriebswellen 34 vorgesehen, auf denen jeweils ein Zahnrad 31 eines hier nicht gezeigten Getriebes befestigt ist. Die Antriebswellen 34 sind mit Wälzlagern 35 jeweils in einem Gehäuse 36 gelagert. Mit Kupplungen 32 werden die Antriebswellen 34 jeweils für die Drehmomentübertragung mit der entsprechenden Trägerwelle 4 bzw. 5 verbunden.For the rotary drive of the plate cylinder 2 and the blanket cylinder 3 drive shafts 34 are provided, on each of which a gear 31 of a transmission, not shown here is fixed. The drive shafts 34 are mounted with rolling bearings 35 each in a housing 36. With clutches 32, the drive shafts 34 are respectively connected for the transmission of torque to the corresponding carrier shaft 4 and 5 respectively.

Die Haltevorrichtungen 11 und 12 bestehen jeweils aus einer unteren Halbschale 13 und einer oberen Halbschale 15. Die unteren Halbschalen 13 sind jeweils mit Befestigungsschrauben 17 fest mit einer der beiden Lagerplatten 19 bzw. 20 verbunden und besitzen jeweils eine oben offene halbkreisförmige Vertiefung 14, in welche ein Drehlager 10 von oben einsetzbar ist. Die oberen Halbschalen 15 sind jeweils wegklappbar oder sonstwie von der unteren Halbschale 13 wegnehmbar. Sind die beiden oberen Halbschalen 15, wie in Figur 3 angedeutet, weggeklappt, so kann der Plattenzylinder 2 bzw. der Gummituchzylinder 3 mit den entsprechenden Drehlagern 10 von oben in die unteren Halbschalen 13 eingesetzt werden. Die äusseren Lagerschalen 10a werden fixiert, indem die oberen Halbschalen 15 mit Schrauben 18 an den unteren Lagerschalen 13 festgelegt werden. Zur Aufnahme der Schrauben 18 besitzt die Halbschale 15 Ausnehmungen 16. Die Schrauben 18 können gemäss Figur 1 jeweils mit einem Spannhebel 21 betätigt werden. Vor dem Fixieren der Drehlager 10 wird der Plattenzylinder 2 bzw. der Gummituchzylinder 3 in Figur 2 etwas achsial nach rechts verschoben, so dass die Trägerwelle 4 bzw. 5 mit der entsprechenden Antriebswelle 34 gekuppelt wird.The holding devices 11 and 12 each consist of a lower half-shell 13 and an upper half-shell 15. The lower half-shells 13 are each connected by fastening screws 17 fixed to one of the two bearing plates 19 and 20 and each have an open-topped semicircular recess 14, in which a pivot bearing 10 can be inserted from above. The upper half shells 15 can each be folded away or otherwise removed from the lower half shell 13. Are the two upper half shells 15, as in FIG. 3 indicated, folded away, so the plate cylinder 2 and the blanket cylinder 3 can be used with the corresponding pivot bearings 10 from above into the lower half shells 13. The outer bearing shells 10a are fixed by the upper half shells 15 are fixed with screws 18 on the lower bearing shells 13. For receiving the screws 18, the half-shell 15 has recesses 16. The screws 18 can according to FIG. 1 are each actuated with a clamping lever 21. Before fixing the pivot bearing 10 of the plate cylinder 2 and the blanket cylinder 3 in FIG. 2 slightly shifted axially to the right, so that the carrier shaft 4 and 5 is coupled to the corresponding drive shaft 34.

Beim Herausnehmen des Plattenzylinders 2 bzw. Gummituchzylinders 3 wird dieser zum Lösen der entsprechenden Kupplung 32 nach dem Lösen der oberen Halbschale 15 in Figur 2 etwas nach links verschoben. Sind die Halbschalen 15 weggeklappt, so kann der Plattenzylinder 2 bzw. der Gummituchzylinder 3 an den Griffmulden 9 herausgehoben werden.When removing the plate cylinder 2 or blanket cylinder 3 this is to release the corresponding coupling 32 after loosening the upper half-shell 15 in FIG. 2 moved slightly to the left. If the half-shells 15 are folded away, then the plate cylinder 2 or the blanket cylinder 3 can be lifted out of the grip recesses 9.

Die Trägerwellen 4 und 5 sind jeweils fest mit einem Formatteil 6 bzw. 7 verbunden, so dass jeweils eine sichere Drehmomentübertragung von der Trägerwelle 4 bzw. 5 auf das Formatteil 6 bzw. 7 und eine hohe Formstabilität gewährleistet ist. Die Verbindung zwischen der Trägerwelle 4 bzw. 5 und dem Formatteil 6 bzw. 7 kann insbesondere formschlüssig sein, indem beispielsweise die Trägerwelle 4 bzw. 5 im Querschnitt unrund ausgebildet und in einen entsprechend unrunden Durchgang des Formatteils 6 bzw. 7 eingeführt ist. Denkbar sind jedoch auch andere Verbindungen.The carrier shafts 4 and 5 are each fixedly connected to a format part 6 or 7, so that in each case a secure torque transmission from the carrier shaft 4 or 5 is ensured on the format part 6 and 7 and a high dimensional stability. The connection between the support shaft 4 or 5 and the format part 6 or 7 may in particular be form-fitting, for example by the support shaft 4 and 5 in cross-section out of round and introduced into a corresponding non-circular passage of the format part 6 and 7 respectively. However, other connections are also conceivable.

Claims (8)

  1. Device for producing various printing format lengths in offset printing
    • with format parts (6,7) with a different cylinder diameter, which may be exchanged to change the printing format length, in which the format parts (6,7) each form a unit with a carrier shaft (4,5) and in which these units may be exchanged when changing the printing format length,
    • each with a pivot bearing (10) arranged at the ends of the carrier shaft (4,5),
    • with two bearing plates (19, 20) arranged at a distance from each other, on the insides of which the units are mounted at the ends of a carrier shafts (4,5),
    • each with a holding device (11, 12) fastened to the bearing plates (19, 20) on the inside, in which a pivot bearing (10) of a unit may be fixed,
    characterised in that
    • at least one of the holding devices (11,12) has a lower half shell (13) and an upper half shell (15), which may be removed, particularly which may be swung out, and
    • the lower half shell (13) has a semicircular shaped recess (14), which is open at the top, into which the pivot bearing (10) may be inserted from above.
  2. Device according to claim 1, characterised in that the format parts (6,7) are each connected inseparably to a carrier shaft (4,5).
  3. Device according to claim 1 or 2, characterised in that the units are made as rubber blanket cylinders (3) and/or plate cylinders (2).
  4. Device according to one of claims 1 to 3, characterised in that the units may be inserted and removed essentially parallel to their axis of rotation.
  5. Device according to one of claims 1 to 4, characterised in that the pivot bearing (10) has at least an outside bearing shell (10a).
  6. Device according to one of claims 1 to 5, characterised in that at least one carrier shaft (4,5) is made hollow and particularly cylindrically hollow.
  7. Device according to one of claims 1 to 6, characterised in that the units are each provided with a recessed grip (9) at their ends.
  8. Device according to one of claims 1 to 7, characterised in that the units are provided in an insert (1) of an offset printing press.
EP04405119A 2004-02-27 2004-02-27 Device for realising variable format offset printing Revoked EP1568494B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04405119A EP1568494B1 (en) 2004-02-27 2004-02-27 Device for realising variable format offset printing
US11/067,222 US7389726B2 (en) 2004-02-27 2005-02-28 Device for producing print images of varying lengths in offset printing
CNB200510052189XA CN100564035C (en) 2004-02-27 2005-02-28 In offset printing, be used to set up the device of different printing specification length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405119A EP1568494B1 (en) 2004-02-27 2004-02-27 Device for realising variable format offset printing

Publications (2)

Publication Number Publication Date
EP1568494A1 EP1568494A1 (en) 2005-08-31
EP1568494B1 true EP1568494B1 (en) 2012-11-28

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Application Number Title Priority Date Filing Date
EP04405119A Revoked EP1568494B1 (en) 2004-02-27 2004-02-27 Device for realising variable format offset printing

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US (1) US7389726B2 (en)
EP (1) EP1568494B1 (en)
CN (1) CN100564035C (en)

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US7758038B2 (en) * 2005-12-05 2010-07-20 Silverbrook Research Pty Ltd Printer having compact media pick-up device
US7270494B2 (en) * 2005-12-05 2007-09-18 Silverbrook Research Pty Ltd Easy assembly printer media transport arrangement
US7632032B2 (en) * 2005-12-05 2009-12-15 Silverbrook Research Pty Ltd Method of assembling printer media transport arrangement
US7681876B2 (en) * 2005-12-05 2010-03-23 Silverbrook Research Pty Ltd Printer having disengageably gear driven media pick-up roller
CN100384625C (en) * 2006-04-27 2008-04-30 胡定福 Radius variable and distance variable roller pair apparatus
FR2934199B1 (en) * 2008-07-25 2011-07-15 Cuir Ccm PRINTING MACHINE EQUIPPED WITH REMOVABLE FRAME CYLINDER
US20110132216A1 (en) * 2009-12-09 2011-06-09 7242514 Canada Inc. Stack angle compensation arrangement for a skewing adjustment system in an offset printing press
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CN106696441B (en) * 2016-12-05 2018-09-18 高斯图文印刷系统（中国）有限公司 A kind of drive transmission device of variable format printing machine

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Also Published As

Publication number Publication date
US7389726B2 (en) 2008-06-24
CN100564035C (en) 2009-12-02
US20050188866A1 (en) 2005-09-01
CN1660571A (en) 2005-08-31
EP1568494A1 (en) 2005-08-31

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