EP0683041B1 - Printing unit for blanket-to-blanket printing - Google Patents

Printing unit for blanket-to-blanket printing Download PDF

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Publication number
EP0683041B1
EP0683041B1 EP95106526A EP95106526A EP0683041B1 EP 0683041 B1 EP0683041 B1 EP 0683041B1 EP 95106526 A EP95106526 A EP 95106526A EP 95106526 A EP95106526 A EP 95106526A EP 0683041 B1 EP0683041 B1 EP 0683041B1
Authority
EP
European Patent Office
Prior art keywords
printing unit
printing
blanket
rubber
unit according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95106526A
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German (de)
French (fr)
Other versions
EP0683041A1 (en
Inventor
Erich Wech
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6517271&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0683041(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0683041A1 publication Critical patent/EP0683041A1/en
Application granted granted Critical
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Classifications

    • 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
    • B41F7/12—Rotary lithographic machines for offset printing using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines

Definitions

  • the invention relates to a printing machine for rubber-to-rubber printing horizontal web run according to the preamble of claim 1.
  • a printing unit for rubber-rubber printing with a horizontal web run shows DE 27 54 429 C2. Then there are two printing units with each a plate and a transfer cylinder one above the other arranged. It becomes horizontal between the transfer cylinders running web to be printed passed. The the axes of the The plane containing the transfer cylinder is larger Angular amount, about 30 °, inclined to the vertical. It becomes one Wrapping the transfer cylinder reached by the web. This is necessary because the transfer cylinder with clamping channels are afflicted. With an arrangement of such cylinders vertically one above the other would pass through the tension channels Pressure zone the pressure on the web and thus by the Printing unit exercised web tension and forced web run are interrupted.
  • the inclined position of the Transfer cylinder has the disadvantage of printing technology that Circumferential speed of the transfer cylinder in the Wrapping area is greater than the web speed and thereby adversely affecting the print quality Shifts between the web and transfer cylinders result.
  • the greater peripheral speed stems from the larger radius of this Cylinder opposite the one in the pressure zone Radius.
  • the invention has for its object in a generic Printing unit with a favorable web run to a good print quality achieve.
  • the Invention reduces the wrap area of the Transfer cylinder, causing the shift between web and Reduced cylinder surface and thereby the print quality is improved. From this point of view, one would be optimal omitted wrapping. But this would have the disadvantage that the train after leaving the pressure gap on the cylinder with the currently larger part of the print sticks to the subject and therefore ever fluttering to the subject. This adversely affects web tension and the print quality (dot gain, size duplex ', Circumference register error). An optimal wrapping that the printing technology concerns and a stable web run, is so at an inclination of the transfer cylinder in the specified Angular range achieved.
  • the printing unit shown in Fig. 1 contains two one above the other arranged transfer cylinders 1, 2, each one Forme cylinder 3, 4 is assigned.
  • the transfer cylinders 1, 2 work in touch with each other.
  • the angle ⁇ can in Range of 0 ° ⁇ ⁇ 10 ° can be selected.
  • the angle ⁇ in Clockwise to the vertical 6, that is, the Transfer cylinder 1 can be arranged inclined in the direction of web travel will.
  • the transfer cylinders 1, 2 are each with an endless Blanket 7 equipped.
  • Fig. 2 shows the cross section of the Transfer cylinder 1.
  • the blanket 7 is a layer on one Carrier applied in the form of a sleeve 8.
  • the rubber blanket 7 can also can be glued on without a gap, and the carrier can also be plate-shaped Can take shape.
  • FIG. 3 Here is the Transfer cylinder 9 with one running in the axial direction Provide slot 10 into which the bent legs 11, 12 one plate-shaped carrier 13 are inserted.
  • On the carrier 13 is the rubber blanket 14 glued on without a gap.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Rotary Presses (AREA)

Description

Die Erfindung betrifft eine Druckmaschine für Gummi-Gummi-Druck mit horizontalem Bahnlauf nach dem Oberbegriff des Anspruchs 1.The invention relates to a printing machine for rubber-to-rubber printing horizontal web run according to the preamble of claim 1.

Eine Druckeinheit für Gummi-Gummi-Druck mit horizontalem Bahnlauf zeigt die DE 27 54 429 C2. Danach sind zwei Druckwerke mit jeweils einem Platten- und einem Übertragungszylinder übereinander angeordnet. Zwischen den Übertragungszylindern wird die waagerecht laufende, zu bedruckende Bahn hindurchgeführt. Die die Achsen der Übertragungszylinder enthaltende Ebene ist um einen größeren Winkelbetrag, etwa 30°, zur Vertikalen geneigt. Es wird dadurch eine Umschlingung der Übertragungszylinder durch die Bahn erreicht. Dies ist erforderlich, weil die Übertragungszylinder mit Spannkanälen behaftet sind. Bei einer Anordnung derartiger Zylinder senkrecht übereinander würde beim Durchlauf der Spannkanäle durch die Druckzone die Pressung auf die Bahn und damit der durch die Druckeinheit ausgeübte Bahnzug und Bahnzwanglauf unterbrochen werden. Die in der genannten Druckschrift gezeigte Schrägstellung der Übertragungszylinder hat aber den drucktechnischen Nachteil, daß die Umfangsgeschwindigkeit der Übertragungszylinder im Umschlingungsbereich größer ist als die Bahngeschwindigkeit und sich dadurch die Druckqualität nachteilig beeinflussende Verschiebungen zwischen Bahn und Übertragungszylindern ergeben. Die größere Umfangsgeschwindigkeit rührt vom größeren Radius dieser Zylinder gegenüber dem sich in der Druckzone einstellenden Radius her.A printing unit for rubber-rubber printing with a horizontal web run shows DE 27 54 429 C2. Then there are two printing units with each a plate and a transfer cylinder one above the other arranged. It becomes horizontal between the transfer cylinders running web to be printed passed. The the axes of the The plane containing the transfer cylinder is larger Angular amount, about 30 °, inclined to the vertical. It becomes one Wrapping the transfer cylinder reached by the web. This is necessary because the transfer cylinder with clamping channels are afflicted. With an arrangement of such cylinders vertically one above the other would pass through the tension channels Pressure zone the pressure on the web and thus by the Printing unit exercised web tension and forced web run are interrupted. The inclined position of the Transfer cylinder has the disadvantage of printing technology that Circumferential speed of the transfer cylinder in the Wrapping area is greater than the web speed and thereby adversely affecting the print quality Shifts between the web and transfer cylinders result. The greater peripheral speed stems from the larger radius of this Cylinder opposite the one in the pressure zone Radius.

Der Erfindung liegt die Aufgabe zugrunde, bei einer gattungsgemäßen Druckeinheit mit einem günstigen Bahnlauf eine gute Druckqualität zu erzielen. The invention has for its object in a generic Printing unit with a favorable web run to a good print quality achieve.

Diese Aufgabe wird erfindungsgemäß durch die gegenständlichen Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst. Die Erfindung verkleinert den Umschlingungsbereich der Übertragungszylinder, wodurch die Verschiebung zwischen Bahn und Zylinderoberfläche verringert und dadurch die Druckqualität verbessert wird. Optimal wäre nach diesem Gesichtspunkt eine völlig entfallende Umschlingung. Dies hätte aber den Nachteil, daß die Bahn nach dem Verlassen des Druckspaltes jeweils an dem Zylinder mit dem momentan größeren Druckanteil am Sujet kleben bleibt und also je nach Sujet flattert. Dies wirkt sich nachteilig auf die Bahnspannung und die Druckqualität (Punktzuwachs, Umfangsduple', Umfangsregisterfehler) aus. Eine optimale Umschlingung, die den drucktechnischen Belangen und einem stabilen Bahnlauf gerecht wird, wird also bei einer Neigung der Übertragungszylinder im angegebenen Winkelbereich erzielt.This object is achieved by the objective Features of the characterizing part of claim 1 solved. The Invention reduces the wrap area of the Transfer cylinder, causing the shift between web and Reduced cylinder surface and thereby the print quality is improved. From this point of view, one would be optimal omitted wrapping. But this would have the disadvantage that the train after leaving the pressure gap on the cylinder with the currently larger part of the print sticks to the subject and therefore ever fluttering to the subject. This adversely affects web tension and the print quality (dot gain, size duplex ', Circumference register error). An optimal wrapping that the printing technology concerns and a stable web run, is so at an inclination of the transfer cylinder in the specified Angular range achieved.

Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen in Verbindung mit der Beschreibung.Advantageous developments of the invention result from the Subclaims in connection with the description.

Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden. In den zugehörigen Zeichnungen zeigt schematisch:

Fig. 1
eine Druckeinheit in der Seitenansicht,
Fig. 2
den Schnitt durch einen Übertragungszylinder der Druckeinheit,
Fig. 3
eine zu Fig. 2 analoge Variante, ausschnittsweise.
The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawings show schematically:
Fig. 1
a printing unit in side view,
Fig. 2
the section through a transfer cylinder of the printing unit,
Fig. 3
a variant analogous to FIG. 2, in sections.

Die in Fig. 1 dargestellte Druckeinheit enthält zwei übereinander angeordnete Übertragungszylinder 1, 2, denen jeweils ein Formzylinder 3, 4 zugeordnet ist. Die Übertragungszylinder 1, 2 arbeiten im Berührungskontakt miteinander. Dabei ist der Berührungspunkt entgegen der Laufrichtung der Bahn 5 zur Vertikalen 6 durch die Mitte des unteren Übertragungszylinders 2 versetzt, und zwar ist die gemeinsame Ebene der Achsen der Übertragungszylinder 1, 2 um einen Winkel α = 5° zur Vertikalen 6 geneigt. Der Winkel α kann im Bereich von 0° < α ≤ 10° gewählt werden. Auch kann der Winkel α im Uhrzeigersinn zur Vertikalen 6 liegen, das heißt, der Übertragungszylinder 1 kann in Bahnlaufrichtung geneigt angeordnet werden.The printing unit shown in Fig. 1 contains two one above the other arranged transfer cylinders 1, 2, each one Forme cylinder 3, 4 is assigned. The transfer cylinders 1, 2 work in touch with each other. Here is the Point of contact against the direction of travel of the web 5 to the vertical 6 offset by the center of the lower transfer cylinder 2, and the common plane of the axes of the transfer cylinders 1, 2 is one Angle α = 5 ° to the vertical 6 inclined. The angle α can in Range of 0 ° <α ≤ 10 ° can be selected. The angle α in Clockwise to the vertical 6, that is, the Transfer cylinder 1 can be arranged inclined in the direction of web travel will.

Die Übertragungszylinder 1, 2 sind jeweils mit einem endlosen Gummituch 7 ausgestattet. Fig. 2 zeigt den Querschnitt des Übertragungszylinders 1. Das Gummituch 7 ist als Schicht auf einem Träger in Form einer Hülse 8 aufgebracht. Das Gummituch 7 kann auch spaltlos aufgeklebt werden, und der Träger kann auch plattenförmige Gestalt haben kann. Eine solche Variante zeigt Fig. 3. Hier ist der Übertragungszylinder 9 mit einem in Achsrichtung verlaufenden Schlitz 10 versehen, in den die abgekanteten Schenkel 11, 12 eines plattenförmigen Trägers 13 eingesteckt sind. Auf den Träger 13 ist das Gummituch 14 spaltlos aufgeklebt.The transfer cylinders 1, 2 are each with an endless Blanket 7 equipped. Fig. 2 shows the cross section of the Transfer cylinder 1. The blanket 7 is a layer on one Carrier applied in the form of a sleeve 8. The rubber blanket 7 can also can be glued on without a gap, and the carrier can also be plate-shaped Can take shape. Such a variant is shown in FIG. 3. Here is the Transfer cylinder 9 with one running in the axial direction Provide slot 10 into which the bent legs 11, 12 one plate-shaped carrier 13 are inserted. On the carrier 13 is the rubber blanket 14 glued on without a gap.

Eine besonders vorteilhafte Weiterbildung der Erfindung besteht darin, die Gummituchhülsen 7, 8 bzw. 13, 14 in der in Fig. 1 dargestellten Druckeinheit 1, 3; 2, 4 bei in der Druckeinheit belassenen Zylindern 1, 2 von der Zylinderstirnseite her, also durch die Druckwerkseitenwand bei einseitig schwebend gehaltenen Zylinder zu wechseln (siehe hierzu z. B. DE-PS 35 43 704, Abbildung 6).A particularly advantageous development of the invention exists therein, the blanket sleeves 7, 8 and 13, 14 in the in Fig. 1st illustrated printing unit 1, 3; 2, 4 at in the printing unit left cylinders 1, 2 from the cylinder face, that is, through the printing unit side wall with cylinders suspended from one side to change (see e.g. DE-PS 35 43 704, Figure 6).

Claims (6)

  1. Printing unit for rubber-to-rubber-printing with horizontal web travel, having two printing stations, the transfer cylinders (1, 2, 9) of which are arranged one above the other, the transfer cylinders (1, 2, 9) each carrying a gapless rubber blanket (7), characterised in that the common plane of the axes of the transfer cylinders (1, 2, 9) is inclined by an angle (α) in the range of 0° < α ≤ 10° to the vertical (6).
  2. Printing unit according to claim 1, characterised in that the upper transfer cylinder (1) is arranged to be inclined in the web travel direction.
  3. Printing unit according to claim 1, characterized in that the upper transfer cylinder (1) is arranged to be inclined against the web travel direction.
  4. Printing unit according to one of claims 1 to 3, characterised in that the rubber blanket (7) is applied as a layer to a carrier (8).
  5. Printing unit according to one of claims 1 to 3, characterised in that the rubber blanket (14) is glued without a gap onto a carrier (13).
  6. Printing unit according to one of the preceding claims, characterised in that the rubber sleeves (7, 8; 13, 14) can be replaced from the cylinder end side while leaving the transfer cylinders (1, 2) in the machine.
EP95106526A 1994-05-04 1995-04-29 Printing unit for blanket-to-blanket printing Expired - Lifetime EP0683041B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4415711A DE4415711A1 (en) 1994-05-04 1994-05-04 Printing unit for rubber-rubber printing
DE4415711 1994-05-04

Publications (2)

Publication Number Publication Date
EP0683041A1 EP0683041A1 (en) 1995-11-22
EP0683041B1 true EP0683041B1 (en) 1998-10-21

Family

ID=6517271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106526A Expired - Lifetime EP0683041B1 (en) 1994-05-04 1995-04-29 Printing unit for blanket-to-blanket printing

Country Status (5)

Country Link
US (1) US5692439A (en)
EP (1) EP0683041B1 (en)
JP (1) JPH0839757A (en)
CA (1) CA2148627C (en)
DE (2) DE4415711A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6050185A (en) * 1997-11-26 2000-04-18 Heidelberger Druckmaschinen Ag Printing unit for a web-fed rotary printing press
DK1361051T3 (en) * 1999-12-02 2010-03-01 Koenig & Bauer Ag Printing works in a rotary printing machine
US6401608B1 (en) 2000-05-05 2002-06-11 Halm Industries, Co., Inc. Printing press with perfecting station
CN100446974C (en) 2001-04-09 2008-12-31 柯尼格及包尔公开股份有限公司 Printing unit of a printing press
EP1377454B1 (en) 2001-04-09 2004-07-21 Koenig & Bauer Aktiengesellschaft Printing couple in a printing machine with a pivotable transfer cylinder
WO2003016057A1 (en) 2001-08-03 2003-02-27 Koenig & Bauer Aktiengesellschaft Printing groups of a printing press
CN1781703A (en) 2001-08-03 2006-06-07 柯尼格及包尔公开股份有限公司 Printing device in printing machine
DE10307382A1 (en) * 2002-12-16 2004-07-08 Koenig & Bauer Ag Printing blanket assembly for a printed blanket cylinder of a rotary printing press comprises a dimensionally stable support plate and a printing blanket fixed to the outer side of the support plate
US20040231535A1 (en) * 2002-07-03 2004-11-25 Gerner Erich Max Karl Printing groups of a printing press
EP1740380B1 (en) * 2004-04-28 2009-09-16 Koenig & Bauer AG Printing unit pertaining to a multi-colour roller rotary press, and method for operating the same
DE102004038206A1 (en) * 2004-08-05 2005-10-27 Koenig & Bauer Ag Bearing unit of a printing cylinder and printing unit

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Also Published As

Publication number Publication date
CA2148627A1 (en) 1995-11-05
DE4415711A1 (en) 1995-11-09
CA2148627C (en) 1998-12-08
DE59503967D1 (en) 1998-11-26
EP0683041A1 (en) 1995-11-22
JPH0839757A (en) 1996-02-13
US5692439A (en) 1997-12-02

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