EP1890880A2 - Cylindre de transfert pour une largeur d'impression d'au moins cinq pages - Google Patents

Cylindre de transfert pour une largeur d'impression d'au moins cinq pages

Info

Publication number
EP1890880A2
EP1890880A2 EP06754383A EP06754383A EP1890880A2 EP 1890880 A2 EP1890880 A2 EP 1890880A2 EP 06754383 A EP06754383 A EP 06754383A EP 06754383 A EP06754383 A EP 06754383A EP 1890880 A2 EP1890880 A2 EP 1890880A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
transfer cylinder
printing
channel
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.)
Withdrawn
Application number
EP06754383A
Other languages
German (de)
English (en)
Inventor
Andreas Miescher
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik 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 Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP1890880A2 publication Critical patent/EP1890880A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
    • B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders
    • 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
    • B41F13/193—Transfer cylinders; Offset cylinders

Definitions

  • the invention relates to a transfer cylinder, on which at least five axially juxtaposed pressure pads can be fastened.
  • the invention relates to the arrangement of mounting channels, in which one of the ends or both ends of one of the pressure pads can be fastened or are.
  • a six-sided tenbreiter transfer cylinder is known on the side by side three two-sided wide pressure pads can be fastened. Each of the pressure pads spans the transfer cylinder over its entire circumference.
  • the attachment serve three mounting channels, which are arranged in three adjacent axial sections of the transfer cylinder. The two outer mounting channels are in alignment, while the middle mounting channel is offset for this purpose in the circumferential direction by 180 °.
  • the invention accordingly relates to a transfer cylinder for a rotary printing machine having mounting channels for attachment of a plurality of pressure pads, wherein the pressure pads together at least five pages wide and on the transfer cylinder axially fastened side by side.
  • the transfer cylinder can thus be a five-side width, preferably a six-side width or optionally also an even wider transfer cylinder.
  • the transfer cylinder is used in a newspaper web press. Printing technology, the offset printing, especially with Dampening solution working offset printing preferred.
  • the transfer cylinder may in particular be a blanket cylinder.
  • the transfer cylinder per axial section only a single mounting channel, so that the pressure pads span the transfer cylinder each over its entire circumference and are secured both with its leading and with its trailing end in the same mounting channel.
  • one of the fastening channels extends axially over at least three pressure sides, and a second of the fastening channels extends axially over at least one pressure side, wherein the at least two fastening channels are arranged offset in the circumferential direction by 180 ° to each other.
  • the two attachment channels extend over a width of at least five printed pages.
  • the first attachment channel in the case of a five-page transfer cylinder can extend axially across four pressure sides and the second attachment channel only over a single pressure side, it is preferred if the second attachment channel extends axially through at least two printed pages.
  • the second attachment channel extends over exactly two print pages.
  • An extension of the second fastening channel over at least two pressure sides has the advantage that in the axial section of the transfer cylinder in which the second fastening channel is formed, either two single-side pressure pads or a two-sided wide pressure pad, ie a pressure pad in so-called panoramic format, can be attached.
  • cylinders with three mounting channels, which are arranged offset in an alternating sequence to each other by 180 ° lower costs for the provision of the channels.
  • the first and the second attachment channel can each be incorporated progressively from the relevant end face of the cylinder bale in the axial direction to the respective other end face in the transfer cylinder, for example milled.
  • no bag channel must be made.
  • asymmetric channel arrangement ie the saving of the third, separately produced channel in a pair of cylinders consisting of the transfer cylinder and a rolling forme cylinder smooth running throughout Speed range of the rotary printing machine can be ensured.
  • Another advantage is the flexibility with regard to the printability with Druckbelägen, as in the axial section of the first mounting channel in the case of a six-page wide print cylinder and a channel width of four printed pages optionally a four-page wide printing pad, a pair of a three-page wide and a one-page wide printing pad further, In particular, a pair of double-sided printing pads and finally four single-sided printing pads can or can be arranged.
  • the transfer cylinder preferably has only one respective attachment channel.
  • the transfer cylinder preferably has exactly two attachment channels, one of which is at least three sides and the other at least one side wide.
  • the preferably six-page-wide transfer cylinder advantageously has exactly two channels, one of which extends continuously in the axial direction of the transfer cylinder over at least three, preferably four sides, while the other extends continuously over at least one, preferably two sides.
  • the transfer cylinder has a fastening channel which extends continuously over at least five printed pages.
  • the channel extends continuously over the entire printing width of the cylinder.
  • the transfer cylinder has only a single axially continuous fastening channel.
  • the transfer cylinder of the modification according to the invention is preferably exactly six printed pages wide.
  • a fastening channel formed continuously over at least five or at least six pressure sides such a five- or six-page-wide transfer cylinder, or an optionally even wider transfer cylinder, can be covered over its entire width with a single pressure coating.
  • Another preferred configuration is the covering with three double-sided pressure coverings.
  • circumferential channels in the cylinder Opposite one or more circumferentially offset channels, which extend or extend continuously throughout the entire printing width of the cylinder, are circumferential channels in the cylinder, i. Sack channels, advantages.
  • Sack channels advantages.
  • a single channel per axial section roll in the circumferential direction offset channels of a first transfer cylinder advantageously on the full cylindrical bale of a second such transfer cylinder, which forms a pressure nip for the web with the first transfer cylinder.
  • the two transfer cylinders each had two through channels offset by 180 °, the compression of the cylinders, which are preloaded against one another, would produce vibrations when the channels are rolled over, even when using bearer rings, in particular at higher printing speeds.
  • the vibrations could possibly be reduced by patches, but not eliminated; In addition, the handling would be cumbersome. Shorter channels are also easier to manufacture, in particular, their parallel alignment with the axis of rotation of the cylinder is easier.
  • the tensioning device required in such a design for the respective blanket usually a clamping spindle, can be stored more easily than with a continuous channel.
  • the clamping device can be performed in particular in the axial alignment of the channel to the side facing away from the respective channel end face of the cylinder.
  • printing blankets with a thin carrier plate which can be hung easily, are more preferred.
  • the attachment channels are preferably straight throughout.
  • clamping devices are formed by means of which the axially juxtaposed on the transfer cylinder one-side pressure linings are independently fastened and detachable.
  • a six-sideband transfer cylinder has correspondingly six such clamping devices.
  • the width indication "n pages wide" designates in preferred exemplary embodiments a width of n newspaper widths of conventional newspaper formats either in a standing or lying format.
  • the invention also relates to a transfer cylinder covered with the printing pads, further comprising a cylinder pair consisting of the transfer cylinder and an associated forme cylinder, and finally also a rotary printing press, preferably a large-run newspaper web-fed printing press, comprising the transfer cylinder, preferably the cylinder pair, has in at least one of its printing units.
  • all printing units or at least some of the printing units of the machine are composed exclusively of such pairs of cylinders and the respective associated inking units, preferably also dampening units, and optionally one or more central cylinder (s).
  • the assigned forme cylinder may in particular have the same cylinder circumference as the transfer cylinder.
  • the transfer cylinder may also have a cylinder circumference which is larger by an integer multiple than the cylinder circumference of the forme cylinder.
  • the transfer cylinder in such embodiments may have in particular the double cylinder circumference.
  • the forme cylinder is occupied in the axial direction according to the occupancy of the transfer cylinder with printing plates, for example, three two-page wide or six single-sided printing plates. In the circumferential direction, it preferably has two printing plates one behind the other.
  • the two fastening channels of the forme cylinder required for this purpose preferably extend continuously over the entire printing width of the forme cylinder and are offset from each other by 180 °.
  • a likewise preferred alternative to this is a forme cylinder, which has only a single, continuous fastening channel at its circumference and is correspondingly covered in printing operation with printing forms extending over the entire circumference.
  • the cylinder 1 and 2 are shown individually, in the printing operation of a rotary printing press, however, they roll against each other, the form cylinder 2 deposits color according to the image on the transfer cylinder 1, which in turn with a counter-pressure cylinder forms a printing gap for the material to be printed, preferably a traversing path in the printing gap.
  • the transfer cylinder 1 can be formed in particular as a blanket cylinder and the forme cylinder 2 as a plate cylinder for offset printing, preferably working with fountain solution offset printing.
  • gumitücher form the pressure pads.
  • the transfer cylinder 1 and the forme cylinder 2 each have an axially measured printing width of six pages lying or standing on. In the example, this corresponds to a width of six newspaper pages.
  • the transfer cylinder 1 is provided on its peripheral surface with a total of two straight, axial mounting channels 3 and 4 for the attachment of printing pads, preferably blankets.
  • clamping devices for a clamping attachment of the lining ends are formed in the mounting channels 3 and 4 .
  • the attachment channel 3 extends axially across a width of four sides, and the attachment channel 4 extends axially across a width of two sides.
  • the pressure pads each span the entire circumference of the transfer cylinder 1, ie they are each secured in the same mounting channel 3 or 4 both with its leading and trailing ends.
  • four single-side pressure coverings, a two-side wide pressure cover and two single-side pressure coverings or in particular two double-sided pressure coverings can thus be arranged side by side.
  • a single, four-page wide pressure pad can cover the entire axial section.
  • the subdivision of the axial portion is indicated in two subsections.
  • the total width of the respective axial section is designated b 3 .
  • two side-by-side pressure coverings or preferably a single, two-side-wide pressure cover can be arranged axially next to one another.
  • the forme cylinder 2 has two straight, axially continuous extending fastening channels 5, which are offset in the circumferential direction by 180 ° to each other.
  • six single-sided printing forms can be arranged axially next to each other on the forme cylinder 2.
  • three double-sided printing forms are arranged axially next to one another on the forme cylinder 2.
  • the number and width of the printing plates preferably corresponds to the number and width of the co-operating pressure linings of the transfer cylinder 1.
  • In the circumferential direction can be provided on the forme cylinder 2 depending on a single printing plate, which covers one of the mounting channels 5 in this case. In each case two printing plates are arranged one after the other in the circumferential direction over the entire printing width.
  • the transfer cylinder 1 preferably has the same diameter as the forme cylinder 2, the two printing forms arranged one behind the other thus work on only one of the printing surfaces.
  • the cylinders 1 and 2 are driven with respect to their rotational angular position so that in each case one of the mounting channels 3 and 4 meets one of the mounting channels 5.
  • the mounting channel 4 is offset in the circumferential direction to the mounting channel 3 by 180 °.
  • the fastening channels 3 and 4 are blind channels, which are incorporated from the respective end face of the cylinder 1 from each only over its length of four and two sides in the cylinder 1 and accordingly end at the periphery of the cylinder. In the axial alignment of the respective channel 3 and 4 thus remains at the periphery of the full cylinder material.
  • the transfer cylinder 1 can form a press nip, in particular with a transfer cylinder 1 of the same type, the axial section with the long channel 3 of the one transfer cylinder 1 rolling on the axial section with the long channel 3 of the other transfer cylinder 1 and the rotational angular position of the transfer cylinder 1 being adjusted to one another.
  • the attachment channel 4 is formed in the axial alignment of the attachment channel 3 and extends the attachment channel 3, so that such a transfer cylinder has exactly one continuous attachment channel.
  • This modified transfer cylinder can interact with the forme cylinder 2 shown in the figure as described.

Landscapes

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

Abstract

L'invention concerne un cylindre de transfert destiné à une presse rotative. Ce cylindre de transfert présente une largeur d'impression d'au moins cinq pages et il présente un premier canal de fixation (3) et un second canal de fixation (4) permettant de fixer au moins deux garnitures d'impression. Ces canaux sont disposés dans des sections axiales différentes du cylindre de transfert (1) et il sont décalés de 180° l'un par rapport à l'autre dans le sens circonférentiel du cylindre de transfert (1) ou ils sont disposés dans le prolongement l'un de l'autre, le premier canal de fixation (3) s'étendant de façon continue sur au moins trois pages d'impression dans le sens longitudinal du cylindre de transfert (1) et le second canal de fixation (4) s'étendant de façon continue sur au moins une page d'impression dans le sens longitudinal.
EP06754383A 2005-06-15 2006-06-14 Cylindre de transfert pour une largeur d'impression d'au moins cinq pages Withdrawn EP1890880A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510027682 DE102005027682A1 (de) 2005-06-15 2005-06-15 Übertragungszylinder für einen wenigstens fünf Seiten breiten Druck
PCT/EP2006/005754 WO2006133938A2 (fr) 2005-06-15 2006-06-14 Cylindre de transfert pour une largeur d'impression d'au moins cinq pages

Publications (1)

Publication Number Publication Date
EP1890880A2 true EP1890880A2 (fr) 2008-02-27

Family

ID=37311926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06754383A Withdrawn EP1890880A2 (fr) 2005-06-15 2006-06-14 Cylindre de transfert pour une largeur d'impression d'au moins cinq pages

Country Status (3)

Country Link
EP (1) EP1890880A2 (fr)
DE (1) DE102005027682A1 (fr)
WO (1) WO2006133938A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006018526A1 (de) * 2006-04-21 2007-10-25 Man Roland Druckmaschinen Ag Druckwerk einer Rollendruckmaschine
DE102006040388A1 (de) * 2006-08-29 2008-03-13 Maschinenfabrik Wifag Anordnung von Drucktüchern auf Druckzylindern einer Rotationsdruckmaschine
EP1938978A3 (fr) 2006-12-21 2012-06-13 Koenig & Bauer Aktiengesellschaft Unité d'impression d'une presse rotative
DE102007006522B4 (de) * 2006-12-21 2016-01-14 Koenig & Bauer Ag Betriebsweisen eines Druckwerkes einer Rotationsdruckmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH345906A (de) * 1956-10-24 1960-04-30 Winkler Fallert & Co Maschf Verfahren und Einrichtung für einen stossfreien Druckablauf an Rotationsmaschinen
GB1476707A (en) * 1974-06-28 1977-06-16 Rockwell International Corp Printing plate arrangement
DE19803809A1 (de) * 1998-01-31 1999-08-05 Roland Man Druckmasch Offsetdruckwerk
DE50015753D1 (de) 1999-12-02 2009-11-12 Koenig & Bauer Ag Druckwerke einer Rotationsdruckmaschine
DE29924409U1 (de) * 1999-12-21 2003-03-06 Koenig & Bauer AG, 97080 Würzburg Zylinder einer Rotationsdruckmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006133938A2 *

Also Published As

Publication number Publication date
DE102005027682A1 (de) 2006-12-28
WO2006133938A2 (fr) 2006-12-21
WO2006133938A3 (fr) 2007-03-15

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