EP0430006B1 - Cylindre d'impression pour presse rotative - Google Patents

Cylindre d'impression pour presse rotative Download PDF

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Publication number
EP0430006B1
EP0430006B1 EP90122043A EP90122043A EP0430006B1 EP 0430006 B1 EP0430006 B1 EP 0430006B1 EP 90122043 A EP90122043 A EP 90122043A EP 90122043 A EP90122043 A EP 90122043A EP 0430006 B1 EP0430006 B1 EP 0430006B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
gap
printing unit
channel
slots
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
EP90122043A
Other languages
German (de)
English (en)
Other versions
EP0430006A2 (fr
EP0430006A3 (en
Inventor
Werner Weber
Markus Gerstenberger
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0430006A2 publication Critical patent/EP0430006A2/fr
Publication of EP0430006A3 publication Critical patent/EP0430006A3/de
Application granted granted Critical
Publication of EP0430006B1 publication Critical patent/EP0430006B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1293—Devices for filling up the cylinder gap; Devices for removing the filler

Definitions

  • the invention relates to a printing unit cylinder for rotary printing presses with a channel web arranged in the cylinder channel thereof, which is supported on the bottom of the cylinder channel and is detachably fastened in the cylinder channel by means of a fastening device, the height of the channel web being such that the channel webs of two interacting cylinders meet.
  • DE-A-35 40 581 shows a filler in a cylinder channel, which is arranged in a web-like manner and is supported on the arch of the cylinder channel.
  • This relatively short filler is arranged approximately in the middle of the cylinder and is intended to intercept the blows that occur when the cylinder channel passes through the interaction with another filler in the counter-cylinder.
  • the known filler piece is supported on both sides by flats on the channel opening, so that the filler piece is rigidly supported. It has now been shown that due to the differences between the elastic rubber blanket and the rigid filler when rolling two cylinders, considerable impacts occur, which cannot avoid cylinder vibrations.
  • a support device in a cylinder pit is known in which complex adjusting means are provided in order to adjust the height of the support bar to the theoretical cylinder diameter. It is proposed to assemble the support bar from individual parts and to design the bar as a whole or its individual parts by means of adjusting means with inclined surfaces.
  • the disadvantage of this actuating means is the fact that in practical operation of a printing machine dust and solvents occur when washing the cylinders, which penetrate into the actuating means and harden after a short time. With this known solution, a sensitive adjustment of the support bar should not be possible in the long run.
  • complicated assembly work is required to remove the parts of the support strip from the cylinder channel or to reassemble them after changing the blankets or printing plates.
  • the object of the present invention is to provide a channel web for the cylinder channel of a printing couple cylinder, the structure of which is uncomplicated and simple to insert into the cylinder channel and which ensures reliable vibration damping during passage through the channel.
  • the channel web is designed as a plate and is divided in the longitudinal direction by transverse slots into individual zones and that the zones are assigned longitudinal slots which allow elastic resilience of the outer contour of the channel web when two channel webs meet.
  • the elastic design of the channel web in the interacting cylinders makes it possible to keep the rolling pressure between the two cylinders largely constant when the cylinder channel passes, even with different surface elasticities.
  • the printer only has to use a specific channel web, depending on the surface condition of the cylinder Longitudinal slots are formed so that the elastic spring force of the channel web corresponds to the support pressure, for example of the rubber blanket.
  • the spring force itself can be determined, for example, by calculation.
  • the transverse slots each open into a longitudinal slot and the length of the longitudinal slot is designed according to the required support pressure. This ensures that each individual zone of the channel web can be individually matched to the requirements in terms of its support pressure without the neighboring zone being influenced.
  • the length of the longitudinal slots is greater in the end regions of the channel web, so that the support pressure adapts to the cylinder deflection. It is also advantageous if the channel web extends in the middle at least over half the cylinder length and protrudes 0.2 to 0.25 mm beyond the theoretical cylinder diameter. A point load on the channel webs and thus wear of the same is largely excluded.
  • retaining springs are attached to the bottom of the cylinder duct, into which the duct web can be inserted. The installation and removal of the canal bridge is therefore possible in the shortest possible time without any effort.
  • the printing unit cylinder 1 can e.g. be covered with a rubber blanket 2 and can interact with a counter cylinder 3.
  • the rubber blanket 2 is stretched over two clamping spindles 4, 5, which are arranged in a cylinder channel 6.
  • a channel web 7 is further arranged between the two ends of the rubber blanket 2 or a pressure plate, which is supported on the bottom 8 of the cylinder channel 6.
  • the channel web 7 is designed so that it meets a channel web 11 in the counter cylinder 3.
  • Fig. 2 shows the printing unit cylinder with inserted channel web 7, 1 bearer rings 12 being provided on the end faces of the printing unit cylinder.
  • FIG. 3 shows the channel web 7, which, as can be seen from FIG. 1, is designed as a plate and, viewed in the longitudinal direction, is divided into individual zones 14 by transverse slots 13.
  • the individual zones 14 are assigned longitudinal slots 15, 16, the length of which is dimensioned in accordance with the required support pressure.
  • the transverse slots 13 meet in the embodiment shown with the longitudinal slots 15, so that an independent elastic spring back of the outer contour 17 of the channel web 7 is made possible.
  • the support pressure can e.g. for a blanket cylinder 1200 to 1600 Newtons.
  • the longitudinal slots 16 can be made longer than the center of the channel web 7, so that the support pressure is reduced here and the outer contour 17 of the channel web can adapt to the cylinder deflection. Furthermore, 18 hook projections 23 are provided in the two end regions, on which the printer Channel web 7 can pull out of the cylinder channel 6. It is advantageous if the channel web 7, 11 is arranged in the middle of the cylinder and has a length which corresponds to at least half the cylinder length, and if it projects 0.2 to 0.25 mm above the theoretical cylinder diameter of the printing unit cylinder 1.
  • retaining springs 19 are fastened by means of screws 20 (FIGS. 1 and 3).
  • screws 20 To hold the channel web 7, slots 21 are provided in the area of the retaining springs 19 in the channel web, into which the spring legs 22 engage. This ensures a stable mounting of the channel web while the printing press is running and also achieves an attachment thereof which enables the channel web 7 to be easily installed and removed.
  • the channel web 7 shown in Fig. 4 is provided at the end regions of the slots 15, 16 with recesses 24, 25, avoid the voltage peaks in these areas and reduce the tension when two channel webs meet one another so far that a uniform load is achieved.
  • 7 hooks 26 are provided in the end region of the zones 14 on the inner part 30 of the channel web 7, which hook into the approaches 14 on the zones 14.
  • T-shaped holding cams 28 are provided on the inner part 30 of the channel web, which hook into lugs 29 on the zones 14.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (7)

  1. Cylindre (1) de groupe d'impression de machines rotatives à imprimer, comprenant une tringle (7) disposée dans son canal (6), conformée en plaque, prenant appui sur le fond (8) du canal (6) et fixée de manière amovible au moyen d'un dispositif de fixation dans la canal (6), la tringle (7) étant réalisée en hauteur de manière que les tringles (7, 11) de deux cylindres (1, 3) coopérant l'un avec l'autre butent l'une sur l'autre, caractérisé en ce que la tringle (7) est subdivisée dans la direction de la longueur en zones individuelles (14) par des fentes transversales (13) et en ce que des fentes longitudinales (15, 16) réalisées dans les zones (14) permettent au contour extérieur (17) de la tringle (7) de fléchir élastiquement lorsque deux tringles (7, 11) butent l'une sur l'autre.
  2. Cylindre de groupe d'impression selon la revendication 1, caractérisé en ce que chacune des fentes transversales (13) débouche dans une fente longitudinale (15) et en ce que les longueurs des fentes longitudinales (15, 16) sont conçues en fonction de la pression d'appui nécessaire.
  3. Cylindre de groupe d'impression selon les revendications 1 et 2, caractérisé en ce que la longueur des fentes longitudinales (15, 16) est supérieure dans les parties extrêmes (18) de la tringle (7) de manière que la pression d'appui s'adapte à la flèche du cylindre.
  4. Cylindre de groupe d'impression selon les revendications 1 et 2, caractérisé en ce que la tringle (7) est disposée au milieu et se prolonge sur au moins la moitié de la longueur du cylindre et elle dépasse de 0,2 à 0,25 mm le diamètre théorique du cylindre.
  5. Cylindre de groupe d'impression selon la revendication 1 ou 4, caractérisé en ce que des ressorts de retenue (19), dans lesquels la tringle (7) peut être insérée, sont fixés sur le fond (8) du canal (6) du cylindre.
  6. Cylindre de groupe d'impression selon la revendications 1 ou 4, caractérisé en ce que des évidements (24, 25) sont prévus aux extrémités des fentes (15, 16) pour abaisser les tensions.
  7. Cylindre de groupe d'impression selon la revendication 1 ou 4, caractérisé en ce que des crochets (26) sont prévus aux extrémités des zones (14) et des mentonnets de retenue (28) en T sont prévus entre les zones (14) et en ce que les crochets (26) et les mentonnets de retenue (26) s'accrochent sur des talons (27 ainsi que 29).
EP90122043A 1989-12-01 1990-11-17 Cylindre d'impression pour presse rotative Expired - Lifetime EP0430006B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3939725 1989-12-01
DE3939725 1989-12-01
DE4034767 1990-11-02
DE4034767A DE4034767A1 (de) 1989-12-01 1990-11-02 Druckwerkszylinder fuer rotationsdruckmaschinen

Publications (3)

Publication Number Publication Date
EP0430006A2 EP0430006A2 (fr) 1991-06-05
EP0430006A3 EP0430006A3 (en) 1991-10-09
EP0430006B1 true EP0430006B1 (fr) 1994-03-09

Family

ID=25887547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122043A Expired - Lifetime EP0430006B1 (fr) 1989-12-01 1990-11-17 Cylindre d'impression pour presse rotative

Country Status (6)

Country Link
US (1) US5090319A (fr)
EP (1) EP0430006B1 (fr)
JP (1) JPH0753448B2 (fr)
CN (1) CN1018810B (fr)
CA (1) CA2030626C (fr)
DE (2) DE4034767A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1307069C (fr) * 1988-01-29 1992-09-01 Shinichi Akitaya Composition ignifuge a base de resine de polypropylene
DE4102858A1 (de) * 1990-03-08 1991-09-12 Heidelberger Druckmasch Ag Druckwerkszylinder fuer rotationsdruckmaschinen
DE4303872C2 (de) * 1992-04-24 1995-08-10 Roland Man Druckmasch Druckmaschine mit einem Formzylinder und Verfahren zur Druckvorbereitung des Formzylinders
DE19516070A1 (de) * 1995-05-04 1996-11-07 Heidelberger Druckmasch Ag Einrichtung zur Überbrückung eines Zylinderkanals
JPH09300588A (ja) * 1996-05-17 1997-11-25 Mitsubishi Heavy Ind Ltd 輪転機のブランケット装着方法および装着装置
FR2776566B1 (fr) * 1998-03-27 2000-06-16 Heidelberger Druckmasch Ag Cylindre de groupe d'impression equipe d'une plaque d'impression a extremites coudees, se fixant sur lui, pour machines rotatives a imprimer
WO2004054807A1 (fr) * 2002-12-16 2004-07-01 Koenig & Bauer Aktiengesellschaft Ensemble blanchet pour cylindre a blanchet d'une machine d'imprimerie et son procede de production
EP1572461B1 (fr) * 2002-12-16 2009-12-09 Koenig & Bauer Aktiengesellschaft Ensemble blanchet pour cylindre a blanchet et son procede de production
JP4021856B2 (ja) * 2004-02-06 2007-12-12 西研グラフィックス株式会社 輪転印刷機の印刷胴構造
JP3878622B2 (ja) * 2004-05-19 2007-02-07 株式会社東京機械製作所 ブランケット胴の埋め部材
BRPI0916084A2 (pt) * 2008-11-03 2015-11-10 Trelleborg Engineered Systems Italy S P A "método para produzir um revestimento para um cilindro tipográfico, e, revestimento para um cilindro tipográfico"
CN112537133A (zh) * 2020-11-25 2021-03-23 无锡市华美达印刷有限公司 一种印刷用橡皮布拉紧装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714852A (en) * 1949-06-04 1955-08-09 Laszlo M Stempel Device for securing and tensioning a flexible transfer blanket on a cylinder
US3181448A (en) * 1963-07-01 1965-05-04 Hemenway Philip Copy sheet support for book copying machine
FR1367860A (fr) * 1963-08-13 1964-07-24 Crabtree & Sons Ltd R Perfectionnement aux machines à imprimer rotatives
DD150573A1 (de) * 1980-05-13 1981-09-09 Klaus Goerner Vorrichtung zum fuehren und halten der bedruckstoffbahnen an gummizylindern von rollenrotationsdruckmaschinen
DE3540581A1 (de) * 1985-11-15 1987-05-21 Roland Man Druckmasch Druckwerkzylinder mit einem in dessen zylindergrube angeordneten fuellstueck
DE3644501A1 (de) * 1986-12-24 1988-07-07 Koenig & Bauer Ag Stuetzeinrichtung in einer zylindergrube
DE3705594C1 (de) * 1987-02-21 1988-06-01 Roland Man Druckmasch Einrichtung zur Abdeckung der Zylindergrube eines Zylinders einer Rotationsdruckmaschine
US4815380A (en) * 1987-02-21 1989-03-28 M.A.N. Roland Druckmaschinen Ag Printing machine cylinder with adjustable groove cover element

Also Published As

Publication number Publication date
CA2030626A1 (fr) 1991-06-02
US5090319A (en) 1992-02-25
CA2030626C (fr) 1995-04-04
DE4034767A1 (de) 1991-06-06
CN1052078A (zh) 1991-06-12
EP0430006A2 (fr) 1991-06-05
EP0430006A3 (en) 1991-10-09
DE59004895D1 (de) 1994-04-14
JPH03182354A (ja) 1991-08-08
JPH0753448B2 (ja) 1995-06-07
DE4034767C2 (fr) 1992-10-29
CN1018810B (zh) 1992-10-28

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