EP1712354A1 - Unité d'impression d'une presse rotative - Google Patents

Unité d'impression d'une presse rotative Download PDF

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Publication number
EP1712354A1
EP1712354A1 EP06007162A EP06007162A EP1712354A1 EP 1712354 A1 EP1712354 A1 EP 1712354A1 EP 06007162 A EP06007162 A EP 06007162A EP 06007162 A EP06007162 A EP 06007162A EP 1712354 A1 EP1712354 A1 EP 1712354A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cylinders
printing
printing unit
transfer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06007162A
Other languages
German (de)
English (en)
Other versions
EP1712354B1 (fr
Inventor
Norbert Dr. Dylla
Rainer Burger
Stefan Albrecht
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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1712354A1 publication Critical patent/EP1712354A1/fr
Application granted granted Critical
Publication of EP1712354B1 publication Critical patent/EP1712354B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status 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
    • B41F7/10—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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders

Definitions

  • the invention relates to a printing unit of a web-fed rotary printing press according to the preamble of claim 1.
  • Printing units of web-fed rotary printing presses have a plurality of printing units, each printing unit consisting of a transfer cylinder, a forme cylinder and an inking unit and optionally a dampening unit.
  • the form cylinder are also referred to as a plate cylinder and the transfer cylinder as a rubber cylinder.
  • printing units can have impression cylinders, wherein an impression cylinder can interact with one or more transfer cylinders of different printing units.
  • the transfer cylinders are also referred to as satellite cylinders.
  • printing units are also known which do not have counter-pressure cylinders, with such printing units without counterpressure cylinders unrolling the transfer cylinders of two printing couples.
  • a web-fed rotary printing unit having a plurality of printing units accordingly comprises a plurality of forme cylinders and a plurality of transfer cylinders and optionally one or more impression cylinders.
  • the present invention relates to printing units having a plurality of forme cylinder, a plurality of transfer cylinders and at least one impression cylinder.
  • Such printing units are also referred to as satellite printing units.
  • Satellite printing units of web-fed rotary printing presses usually have four printing units and therefore four forme cylinders and four transfer cylinders and one or two impression cylinders.
  • Such satellite printing units with four printing units and a counter-pressure cylinder are referred to as 9-cylinder printing units;
  • Printing units with four printing units and two counter-pressure cylinders, however, are referred to as 10-cylinder printing units.
  • partial printing images are preferably applied in the region of each printing unit for preferably a plurality of printed pages in one printing ink to a printing material moved between the transfer cylinders and the or each impression cylinder.
  • a pressure must be applied in a so-called pressure-on position of the printing unit on the one hand between the cylinders and the transfer cylinders of the printing units and on the other hand between the transfer cylinders and the respective impression cylinder, said pressing by pivoting or hiring the transfer cylinder to the respective form cylinder and provided to the respective impression cylinder.
  • the transfer cylinders are usually mounted eccentrically and positioned relative to the respective forme cylinder and impression cylinder such that a center of the transfer cylinder is not located on a connecting line between centers of the corresponding forme cylinders and impression cylinders. Rather, a connecting line of a center of a transfer cylinder with the center of the corresponding counter-pressure cylinder with the line connecting the centers of the corresponding forme cylinder and counter-pressure cylinder forms an angle between 5 ° and 40 °.
  • the transfer cylinder and form cylinder are arranged symmetrically to each other with respect to a vertical axis.
  • the transfer cylinder, the form cylinder and the or each impression cylinder such pressure units are subject to a deflection due to their own weight and due to the pressure or contact forces. This deflection depends in particular on the shape of the cylinder, with relatively slender cylinder undergo a greater deflection.
  • a significant circumferential register deviation can occur between the partial printing images to be printed in the different printing units of the printing unit, which adversely affects the print quality.
  • these circumferential register deviations are particularly pronounced when relatively slender cylinders are present.
  • the ratio of axially juxtaposed pressure sides to circumferentially successively positioned pressure sides is large, as for example in 6/2 cylinders, in which six pressure sides in the axial direction side by side and circumferentially two pressure sides are positioned one behind the other. The same applies to 3/1 and 4/1 cylinders.
  • the present invention is based on the problem to provide a novel printing unit of a web-fed rotary printing press with minimized circumferential register deviations.
  • a printing unit of a web-fed rotary printing press according to claim 1.
  • the forme cylinders and / or the transfer cylinders are positioned asymmetrically.
  • the deflection of the cylinders can be influenced in order to minimize circumferential register deviations.
  • the print quality can be significantly increased.
  • the form cylinder and / or the transfer cylinder are positioned asymmetrically with respect to a vertical axis, said axis extending in a printing unit with a counter-pressure cylinder through the axis of rotation of the impression cylinder.
  • the impression cylinders are positioned symmetrically to this axis.
  • the forme cylinders and / or the transfer cylinders are positioned asymmetrically in such a way that horizontal lines are uniformly curved in the same direction in the transfer of the or each printing form to the printing material in the area of all printing units and in the same direction relative to the transport direction of the printing material.
  • the transfer cylinders are positioned downstream relative to the transport direction of the printing material or behind or upstream of or in front of a connecting line extending through the centers of the forme cylinder and impression cylinder of the respective printing unit.
  • FIGS. 3 and 4 Before the invention will be described in more detail below with reference to FIGS. 3 and 4, it will be described in advance, with reference to FIGS. 1 and 2, a prior art printing unit of a web-fed rotary printing press, namely a newspaper press.
  • FIG. 1 shows a printing unit 10 of a web-fed rotary printing press known from the prior art, the printing unit 10 having four printing units 11, 12, 13 and 14 and therefore four forme cylinders 15, 16, 17 and 18 and four transfer cylinders 19, 20, 21 and 22.
  • the printing units 11 to 14 have not shown inking units and optionally dampening units.
  • each forme cylinder 15 to 18 of each printing unit 11 to 14 rolls on the respective transfer cylinder 19 to 22 of the corresponding printing unit 11 to 14, wherein all transfer cylinders 19 to 22 of all printing units 11 to 14 on a common impression cylinder 23 unroll.
  • the printing unit of FIG. 1 is accordingly designed as a so-called 9-cylinder printing unit.
  • a web-shaped printing material 24 is printed in the region of each printing unit 11 to 14 with partial printing images in a printing ink, wherein according to FIG. 1, the printing material 24 for this purpose between the transfer cylinders 19 to 22 and the impression cylinder 23 is moved.
  • First partial printed images are applied to the printing substrate 24 in the area of the printing unit 11, further partial printed images are successively printed in the printing units 12, 13 and 14 on the printing substrate 24, in particular peripheral register displacements between the partial printing images must be minimized to achieve the highest possible print quality the partial printing images are printed in exact coverage on the substrate 24.
  • the transfer cylinders 19 to 22 and the forme cylinders 15 to 18 are symmetrically positioned with respect to a vertical axis AA extending at the 9-cylinder printing unit through a rotation axis and a center point of the impression cylinder 23, respectively , Since the forme cylinders 15 to 18, the transfer cylinders 19 to 22 and the counter-pressure cylinder 23 are subject to deflection as a result of their own weight and the contact forces acting on them during printing, a straight, horizontal line on the forme cylinders 15 to 18 is curved on the printing substrate 24 , Accordingly, in the printing unit 10 of FIG. 1, the circumferential register deviations shown in FIG. 2 result between those in the printing units 11 to 14 partial printing pictures. In Fig.
  • the axial extent of the cylinder or the width of the printing material and on the vertical axis, the curvature of the transferred from the forme cylinders 15 to 18 lines relative to the transport direction of the printing material 24 is applied to the horizontal axis.
  • the curve 25 corresponds to the curvature of a printed in the printing unit 11 of the forme cylinder 15 and the transfer cylinder 19 on the substrate 24 line.
  • the curve 26 corresponds to the curvature of a printed in the printing unit 12 of the forme cylinder 16 and the transfer cylinder 20 line.
  • a straight, horizontal line on the plate cylinder 17 in printing unit 13 in the ink transfer via the transfer cylinder 21 to the curved curve 27, and a straight, horizontal line on the plate cylinder 18 in printing unit 14 is in the ink transfer via the transfer cylinder 22 on the substrate 24 to the curved curve 28.
  • the vertical distance between the curves 25 to 28 corresponds to the circumferential register deviation at the respective axial position of the printing material between the partial printing images to be printed in the printing units 11 to 14.
  • the circumferential register deviations between the printing units, which the printing material 24 passes through in a different transport direction, are particularly large.
  • Fig. 3 shows a first embodiment of a printing unit 29 according to the invention of a web-fed rotary printing press, which is designed as a so-called 9-cylinder printing unit, ie four printing units 30 to 33 and therefore four forme cylinders 34 to 37 and four transfer cylinders 38 to 41 and a counter-pressure cylinder 42 includes.
  • the transfer cylinders 38 to 41 of all printing units 30 to 33 roll on the common impression cylinder 42, wherein between the transfer cylinders 38 and 41 and the impression cylinder 42, a web-shaped substrate 43 is moved through to the substrate 43 in the range of each printing unit 30 to 33 a Print partial image.
  • On the transfer cylinders 38 to 41 of each printing unit 30 to 33 roll off the form cylinder 34 to 37 of the respective printing unit.
  • the transfer cylinders 38 to 41 are positioned asymmetrically, whereas the forme cylinders 34 to 37 are arranged symmetrically.
  • the forme cylinders 34 to 37 are arranged symmetrically to a vertical axis AA which extends through a rotation axis or a center 44 of the impression cylinder 42 in the case of the 9-cylinder printing unit of FIG.
  • the transfer cylinders 38 to 41 are positioned asymmetrically relative to this vertical axis AA.
  • the transfer cylinders 38 to 41 are arranged asymmetrically to each other that for all printing units 30 to 33, the sum of the tangential displacements between the forme cylinders 34 to 37 and the associated transfer cylinders 38 to 41 and between the transfer cylinders 38 to 41 and the impression cylinder 42 evenly and are curved in the same direction relative to the transport direction of the printing substrate 43.
  • Fig. 3 are in the range of all printing units 30 to 33 Abroll Schemee 45 of the transfer cylinder 38 to 41 on the impression cylinder 44 relative to the transport direction of the printing material 43 downstream or behind a through centers 46 of the forme cylinder 34 to 37 and through the center Fig.
  • FIG 3 shows these connecting lines between the center 44 of the impression cylinder 42 and the centers 46 of the forme cylinders 34 to 37 of the printing units in dashed lines, the Abroll Schemee 45 of the transfer cylinder 38 to 41 of each printing unit and the impression cylinder 42 with respect to the transport direction of the printing material 43 downstream or behind these connection lines.
  • the Abroll Schemee between the transfer cylinders and the impression cylinder in the embodiment of FIG. 3 are positioned in the region of each printing unit with respect to the transport direction of the printing material downstream of the connecting lines between form cylinder and impression cylinder.
  • the printing unit is designed as a 9-cylinder printing unit.
  • the printing unit is also possible to carry out the printing unit as a 1 0-cylinder printing unit, in which case then two impression cylinders are present.
  • two transfer cylinders of two printing units then roll on both counter-pressure cylinders, the impression cylinders being positioned symmetrically with respect to the vertical axis A-A.
  • circumferential register deviations can be minimized by correspondingly asymmetric positioning of the forme cylinder and / or transfer cylinder.
  • FIG. 4 A further embodiment of a printing unit 47 according to the invention is shown in FIG. 4, wherein the printing unit 47 of FIG. 4, like the printing unit 29 of FIG. 3, is designed as a 9-cylinder printing unit.
  • the same reference numerals are used for the same components and it will be discussed below only on the details by which the embodiment of FIG. 4 differs from the embodiment of FIG.
  • both the forme cylinders 34 to 37 and the transfer cylinders 38 to 41 are positioned asymmetrically, namely asymmetrically to the vertical axis AA, which extends through the center 44 of the impression cylinder 42 in the 9-cylinder printing unit.
  • the Transfer cylinders 38 to 41 and the forme cylinders 34 to 37 are again arranged or positioned asymmetrically in such a way that the sum of the tangential displacements between the forme cylinders 34 to 37 and the associated transfer cylinders 38 to 41 and between the transfer cylinders 38 for all printing units 30 to 33 to 41 and the impression cylinder 42 are curved uniformly and in relation to the transport direction of the printing substrate 43 in the same direction, that is in the range of all printing units 30 to 33 Abroll Schemee the transfer cylinder 38 to 41 on the impression cylinder 42 either downstream or upstream or upstream lie in front of a connecting line between the forme cylinders 34 to 37 and the impression cylinder 42.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
EP06007162A 2005-04-13 2006-04-05 Unité d'impression d'une presse rotative Not-in-force EP1712354B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005017179A DE102005017179A1 (de) 2005-04-13 2005-04-13 Druckeinheit einer Rollenrotationsdruckmaschine

Publications (2)

Publication Number Publication Date
EP1712354A1 true EP1712354A1 (fr) 2006-10-18
EP1712354B1 EP1712354B1 (fr) 2009-10-21

Family

ID=36729318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06007162A Not-in-force EP1712354B1 (fr) 2005-04-13 2006-04-05 Unité d'impression d'une presse rotative

Country Status (4)

Country Link
US (1) US20060230955A1 (fr)
EP (1) EP1712354B1 (fr)
CA (1) CA2541955A1 (fr)
DE (2) DE102005017179A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007010358A1 (de) * 2007-03-03 2008-10-30 Manroland Ag Satellitendruckeinheit einer Rollendruckmaschine
EP2559553B1 (fr) * 2010-11-05 2014-04-23 Neopack, S.L. Presse d'impression à format variable disposant d'un cylindre central d'impression

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387532A (en) * 1972-07-21 1975-03-19 Maschf Augsburg Nuernberg Ag Printing machine
DE3435487A1 (de) * 1983-09-30 1985-04-18 Dai Nippon Insatsu K.K. Vorrichtung zum voreinstellen von plattenzylindern fuer die registereinstellung in einer offset-druckpresse
US4774883A (en) * 1984-12-20 1988-10-04 J. G. Mailander GmbH & Co. Single-color or multicolor offset printer with movable machine groups
EP0749369A1 (fr) * 1994-03-10 1996-12-27 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Groupe imprimant pour rotative a bobines pour impression en couleurs
DE19548819A1 (de) * 1995-12-27 1997-07-03 Koenig & Bauer Albert Ag Druckwerk
DE19803809A1 (de) * 1998-01-31 1999-08-05 Roland Man Druckmasch Offsetdruckwerk

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE443399C (de) * 1925-05-12 1927-07-30 Vogtlaendische Maschinenfabrik Mehrfarben-Rotationsgummidruckmaschine
JPS55158969A (en) * 1979-05-26 1980-12-10 Tokyo Kikai Seisakusho:Kk Multipurpose offset printing press
DE4305393C2 (de) * 1993-02-22 1996-07-18 Heidelberger Druckmasch Ag Rollen-Rotationsdruckmaschine mit Eindruckwerk für fliegenden Druckformwechsel
DE29702923U1 (de) * 1997-02-19 1997-03-27 Wifag Maschf Zylindereinheit für eine Rollenrotationsdruckmaschine
DE19833468C2 (de) * 1998-07-24 2000-05-18 Koenig & Bauer Ag Druckwerke
DE19833470C2 (de) * 1998-07-24 2000-05-18 Koenig & Bauer Ag Druckeinheit
DE10046376C2 (de) * 2000-09-20 2002-12-12 Koenig & Bauer Ag Antrieb einer Druckeinheit
JP2004508983A (ja) * 2000-09-20 2004-03-25 ケーニツヒ　ウント　バウエル　アクチエンゲゼルシヤフト 印刷装置
DE10114347B4 (de) * 2001-03-23 2006-02-02 Man Roland Druckmaschinen Ag Neun-Zylinder-Satellitendruckeinheit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387532A (en) * 1972-07-21 1975-03-19 Maschf Augsburg Nuernberg Ag Printing machine
DE3435487A1 (de) * 1983-09-30 1985-04-18 Dai Nippon Insatsu K.K. Vorrichtung zum voreinstellen von plattenzylindern fuer die registereinstellung in einer offset-druckpresse
US4774883A (en) * 1984-12-20 1988-10-04 J. G. Mailander GmbH & Co. Single-color or multicolor offset printer with movable machine groups
EP0749369A1 (fr) * 1994-03-10 1996-12-27 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Groupe imprimant pour rotative a bobines pour impression en couleurs
DE19548819A1 (de) * 1995-12-27 1997-07-03 Koenig & Bauer Albert Ag Druckwerk
DE19803809A1 (de) * 1998-01-31 1999-08-05 Roland Man Druckmasch Offsetdruckwerk

Also Published As

Publication number Publication date
EP1712354B1 (fr) 2009-10-21
US20060230955A1 (en) 2006-10-19
DE102005017179A1 (de) 2006-10-19
CA2541955A1 (fr) 2006-10-13
DE502006005148D1 (de) 2009-12-03

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