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EP1291175B1 - Cylindre porte-plaque pour plusieurs images - Google Patents

Cylindre porte-plaque pour plusieurs images Download PDF

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Publication number
EP1291175B1
EP1291175B1 EP02017722A EP02017722A EP1291175B1 EP 1291175 B1 EP1291175 B1 EP 1291175B1 EP 02017722 A EP02017722 A EP 02017722A EP 02017722 A EP02017722 A EP 02017722A EP 1291175 B1 EP1291175 B1 EP 1291175B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
ring
printing
cylinder portion
sleeve element
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
EP02017722A
Other languages
German (de)
English (en)
Other versions
EP1291175A1 (fr
Inventor
Charles Henry Dufour
John Sheridan Richards
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.)
Goss International Americas LLC
Original Assignee
Goss International Americas LLC
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 Goss International Americas LLC filed Critical Goss International Americas LLC
Publication of EP1291175A1 publication Critical patent/EP1291175A1/fr
Application granted granted Critical
Publication of EP1291175B1 publication Critical patent/EP1291175B1/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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/16—Registering devices with means for displacing the printing formes on the cylinders
    • 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
    • B41F27/14—Devices for attaching printing elements or formes to supports for attaching printing formes to intermediate supports, e.g. adapter members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/10—Attaching several printing plates on one cylinder
    • B41P2227/11—Attaching several printing plates on one cylinder in axial direction

Definitions

  • the present invention relates to a printing cylinder for receiving a plurality of images according to the preamble of claim 1 and a method for applying a plurality of images to a printing cylinder according to the preamble of claim 12.
  • a printing plate carrying an image to be printed is dyed.
  • the dyed image is transferred to a blanket and from there to a continuous web.
  • the printing press usually comprises four printing units, in which the material web is printed with one of the four process colors.
  • the blanket cylinders of the printing units it also absorbs moisture, which can lead to stretching of the web.
  • This stretching of the web in the axial direction of the impression cylinder is also referred to as “spreading" or "fan-out".
  • the print or images on the web becomes slightly wider as the web passes the printing units.
  • the second and the following printing units must be register-aligned in the axial direction of the cylinders with respect to the printed images on the material web, so that e.g. an image in a second color in the second printing unit is printed directly on an image already printed in the first printing unit.
  • Some printing applications use plate cylinders that support multiple printing plates and a variety of images across their width. These plate cylinders carry a plurality of axially spaced pressure plates. For register-accurate alignment of the individual printing plates and to correct the fan-out effect, the printing plates can be independently movable in the axial direction.
  • a plate cylinder carrying two printing plates is described.
  • a pressure plate is attachable to a large pressure gauge portion, and another plate is attachable to a rotatable sleeve axially movable relative to the large diameter portion.
  • the sleeve is attached to a stepped shaft.
  • a helical gear is provided to adjust the axial register and the circumferential register of the printing units.
  • the US 5,383,393 describes a multicolor rotary offset printing machine having a plurality of printing sections arranged along a path of travel of a paper web, a plurality of register setting means, a paper stretching device, and a plurality of width adjusting means.
  • Each of the printing sections further comprises at least one split plate cylinder, the sections of which are moved independently in the axial and / or circumferential direction.
  • the printing machine described in the cited document further comprises a register setting means, which is mechanically connected to all divided plate cylinders in the printing sections, and an adjusting mechanism for actuating the sections in response to a control unit provided with a sensor for scanning the in the individual printing sections on the Paper web printed lines and images is connected.
  • the post-published DE 101 35 506 describes a plate cylinder for receiving a plurality of printing plates with independently registerable jacket elements.
  • the printing plates are arranged on at least in the axial direction displaceable jacket elements, which can be moved by means of a respective drive in different axial positions.
  • the DE 101 45 016 describes a device for regulating the fan-out of a web in a printing press with a plate-carrying plate cylinder.
  • the printing cylinder has a central cylinder portion and adjacently arranged, at least axially displaceable jacket elements.
  • the cylinder portion and the shell elements can be fitted only with such printing plates, which are adapted in width to the respective width of the cylinder portion or the shell elements.
  • a further or alternative object of the present invention is to regulate the fan-out effect in such a printing press and to improve register accuracy.
  • both the ring and the jacket elements are formed as cylindrical elements, wherein the ring a having smaller axial extent than the jacket elements.
  • both ring and shell elements can also be divided in the circumferential direction into two or more separate sections.
  • connection means that the ring is positioned adjacent, adjacent (with or without clearance), or in contact with a shell member or cylinder portion, i. H. moved, moved, relocated or moved to this position.
  • a fixed connection is not necessary, but may be optional and may be used.
  • an intermediate portion is preferably provided, which is wider in the axial direction than the ring, so that the ring can be positioned and moved in the intermediate portion.
  • the cylinder Due to the movable ring between the cylinder portion and the shell element, the cylinder can advantageously record images of different width, while at the same time controlling the fan-out effect and register-accurate alignment is possible.
  • a controller can be provided, which adjusts the jacket element as a function of the web width.
  • the ring is moved to the shell element.
  • the second image arranged next to the first image is thus located both on the outer surface of the ring and on the outer surface of the jacket element.
  • the ring and the shell element can now be moved together axially to achieve a suitable adaptation to the fan-out effect.
  • the ring is moved to the cylinder portion and the wider image on the cylinder portion and Ring arranged.
  • a next to the wider image arranged new image is located only on the jacket element.
  • the cylinder portion and the ring remain together while the jacket member can be moved to match the fan-out effect and to adjust the distance between the two images.
  • Additional rings movable relative to the ring, shell member, and barrel portion may be provided between the shell member and the barrel portion to accommodate a larger variety of formats.
  • the cylinder section is preferably stationary in the axial direction. It can also be designed, for example, as part of the impression cylinder.
  • a further jacket element and an additional ring can be arranged.
  • the register control may include both the axial register and the circumferential register.
  • a fan-out compensation is possible with stationary cylinder section on both sides by means of the two jacket element and also the rings.
  • At least six images can be applied to the cylinder portion, the shell element and the ring.
  • a six-wide printing machine is created, which can process variable formats and allows adaptation to the fan-out effect.
  • an image can proceed. It is also possible to provide two or more images in the circumferential direction.
  • a printing cylinder with 6x2 images can be used (6 in the axial direction, 2 in the circumferential direction).
  • the cylinder section and both jacket elements each carry at least partially two images.
  • the cylinder is preferably designed as a plate cylinder suitable for receiving at least two flat printing plates.
  • the printing plates define the images that they were imaged outside or in a printing press with images to be printed.
  • the cylinder portion, the shell member and the ring each have an axially extending gap or channel with a plate clamping mechanism.
  • the plate clamping mechanisms can be hydraulically controlled, for example, and can be similar to that in the US 5,284,093 disclosed plate clamping mechanism may be formed.
  • the cylinder portion, the shell member and the ring may have axially extending channels for mounting pressure plates, the pressure plates defining the images.
  • the axial movement of the shell element and the ring can be controlled by a mechanical or hydraulic actuator.
  • a mechanical actuator may e.g. a motor and a side drive gear for the shell element and a lateral drive gear for the ring include.
  • a Abstelltechnikrad is provided, which connects the drive gear of the shell element and the drive gear of the ring together.
  • the jacket element and the ring preferably have a cross-section which defines approximately one pitch circle (eg semicircle), whereby corresponding further pitch circles are provided so that a continuous outer surface is formed, as is the case for example with a printing press, in which two images are arranged over the circumference of the plate cylinder.
  • approximately one pitch circle eg semicircle
  • the jacket element and the ring may e.g. be connected via a dovetail connection with a cylinder body, whereby an axial movement allows, but other movements are limited.
  • the cylinder body may e.g. a dovetail groove into which a dovetailed wedge of the shell element and the ring can be inserted.
  • the dovetail-shaped wedges may be formed smaller than the groove, so that there is a certain amount of clearance in the groove, which facilitates an axial movement.
  • a displaceable wedge may be provided, which fills the clearance. If an axial movement is to be carried out, then the displaceable wedge can be released, so that the backlash arises again.
  • An inventive method for applying a plurality of images to a printing cylinder wherein the printing cylinder has a cylinder portion and an at least relative to the cylinder portion axially movable shell element and wherein a first image at least partially on the cylinder portion and a second image is at least partially disposed on the jacket element, is characterized in that an axially movable ring is provided in an intermediate portion between the cylinder portion and the skirt member, the intermediate portion being wider than the ring, the ring being positioned substantially adjacent to the cylinder portion, and the first image being partially disposed on the ring or alternatively selectively positioning the ring substantially adjacent the shell member and partially locating the second image on the ring.
  • the images are preferably disposed on flat printing plates, the cylinders preferably having plate clamping mechanisms for clamping a leading and trailing edge of the respective printing plates.
  • the cylinders preferably having plate clamping mechanisms for clamping a leading and trailing edge of the respective printing plates.
  • sleeve-shaped printing plates can also be used.
  • Fig. 1 shows a web-fed rotary offset printing press with a first printing unit 5 and a second printing unit 6.
  • Four-color printing machines usually comprise four such printing units.
  • the printing unit 6 comprises a first plate cylinder 10, a first blanket cylinder 12, a second plate cylinder 20 and a second blanket cylinder 22.
  • a web 2 is printed with adjacent images in a first color, z. B. with six images across the width of the web.
  • a second color is printed over the first images. To compensate for the fan-out effect, the second printing unit 6 can be adjusted laterally.
  • a control unit 200 e.g. includes a microprocessor receives information received from sensors 201, 202 to determine the width of the web 2.
  • the sensors 201, 202 may be upstream or downstream of the blanket cylinders 12, 22.
  • the control unit 200 may then adjust to the web width in the manner described below.
  • Fig. 2 shows a closer view of the cylinder 10 for printing a web in its full width.
  • the cylinder 10 includes a first shell member 31, a first ring 32, a stationary central cylinder portion 33, a second ring 34 and a second shell member 35.
  • the shell members 31, 35 and the rings 32, 34 are axially movable relative to the central cylinder portion 33 ,
  • the jacket member 31 has a width WS
  • the rings 32, 34 have a width WR
  • the middle portion 33 has a width WC.
  • a distance or intermediate portion FD between the shell member 31 and the ring 32 is adjustable depending on the desired fan-out balancing effect for controlling the fan-out effect.
  • a web is printed in its entire width with six images I1, I2, I3, I4, I5, I6.
  • the jacket element 31 carries the images I1 and I2, the ring 32 and a part of the central portion 33 is the image I3, the other part of the central portion 33 and the ring 34 carry the image I4 and the jacket member 35 carries the images I5, I6 ,
  • the images are preferably on flat printing plates, which are secured by means of plate tensioning devices to the corresponding cylinder sections 31, 32, 33, 34, 35.
  • Fig. 4 shows a cross section along the line XX in Fig. 2 ,
  • the image I1 is located on a pressure plate 40, which is fastened by means of a plate-tensioning mechanism 50 which can be activated by a hydraulically actuable piston 53.
  • the jacket element 31 can by means of a in Fig. 4 schematically shown drive 56 are moved.
  • a tine or dovetail 54 of the jacket element 31 can be inserted into a dovetail groove of a cylinder body 60 of the cylinder 10.
  • the cylinder body 60 can with the central cylinder portion 33 ( Fig. 2 ) be integrally formed.
  • a clearance 57 in the dovetail-shaped groove can be filled by a fastening mechanism 55 which is preferably formed as an axially extending, movable wedge and the jacket member 31 frictionally secured to the cylinder body 60.
  • the jacket element 31 is substantially annular in cross section. Printing machines whose plate cylinders carry more than two images in the circumferential direction are also conceivable.
  • the rings 32, 34 and the jacket member 35 may be formed similar to the jacket member 31.
  • correspondingly two ring sections or jacket elements can be provided in the circumferential direction.
  • the attachment mechanisms of the rings 32, 34, the shell elements 31, 35 and the cylinder portion 33 may be hydraulically actuated.
  • the drive 56 can axially move the shell element 31 and the ring 32 independently of one another.
  • On the opposite side may be provided for the ring 34 and the jacket member 35, a similar drive.
  • Fig. 5 shows a further embodiment of the invention with an additional ring. Shown is a detail view of a drive 156 for the shell member 31, the ring 32 and a second ring 132.
  • a motor shaft 70 rotates a drive gear 71 of a shell member, thereby rotating a shaft 72 of the shell member rotatably mounted in a stationary support 79.
  • the other end of the shaft 72 has a thread which cooperates with a thread 73 of the jacket member 31 to rotate upon rotation of the shaft or spindle 72 an axial movement of the To cause jacket element 31.
  • two shafts 86 and 87 are further supported, which cooperate with a thread 88 of the ring 32 and with a thread 89 of the ring 132.
  • a Abstell leopardrad 75 optionally provides a connection between the gears 71 and 76, so that the jacket member 31 and the ring 32 are movable together.
  • a parking gear 78 selectively connects the gears 76 and 77 so that the two rings 32 and 132 are movable together. When the two Abstelltechnikgan 75 and 78 are disengaged, the gears 76 and 77 are manually adjustable.
  • the drives 56 and 156 are characterized by the in Fig. 1 shown control unit 200 which can adjust in this way the position of the rings 132, 32, 34 in dependence on the web width and can cause a compensation of the fan-out effect.
  • cylinder 10 can be dispensed with the gears 77, 78 and the shaft 87, since no second ring 132 is provided.
  • the drive 56 may therefore comprise only two shafts formed similarly to the shafts 72 and 86.
  • narrower images I1, I2, I3, I4, I5, I6 can be removed.
  • the jacket member 31 can be moved in the direction of the ring 32, and the Abstelltechnikrad 75 can be engaged, so that the ring 32 and the jacket member 31 are movable together.
  • narrower images I1 ', I2', I3 ', I4', I5 'and I6' can now be applied to the cylinder 10, wherein the image I2 'spans both the ring 32 and a part of the jacket element 31 and the Picture I4 'spans both the ring 34 and a part of the jacket member 35.
  • the section B1 of the jacket element 31 and the section B2 of the jacket element 35 can remain unimaged / free. Since that Sheath member 31 and the ring 32 are movable together, the drive 56 can compensate for the fan-out effect by the generation of a compensation section FD '.
  • an image-bearing cylinder of variable width i. for accommodating variable width printing plates, which also allows control of the fan-out effect.
  • the jacket member 31 mechanically and the ring 32 are moved axially by means of a hydraulic mechanism.
  • the jacket elements and rings can be determined in their axial position by means of a movable wedge in the free space of a dovetail groove.
  • the in Fig. 2 embodiment shown may also be provided a single ring, yet a variable width is guaranteed. In this case, however, the section 33 would not be at all possible widths of the web 2 in the middle of the web 2. However, if it is not necessary that the section 33 is always in the middle of the web, the in Fig. 2 shown embodiment with two rings provide another web width, which corresponds to 3 * (WC + WR).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Holo Graphy (AREA)
  • Eye Examination Apparatus (AREA)

Claims (12)

  1. Cylindre d'impression (10) servant à recevoir plusieurs images à imprimer (I1-I6, I1'-I6'), présentant une section de cylindre (33) qui porte une première partie d'une première image à imprimer (I1-I6, I1'-I6'), un élément d'enveloppe (31, 35, 131) pouvant être déplacé axialement par rapport à la section de cylindre (33), qui porte une première partie d'une seconde image à imprimer (I1 -I6, I1'-I6'), le cylindre d'impression étant un cylindre porte-plaque et comportant au moins deux plaques d'impression planes, chacune des plaques d'impression définissant une des premières et secondes images à imprimer,
    caractérisé par
    un anneau (32, 34, 132) disposé entre l'élément d'enveloppe (31, 35, 131) et la section de cylindre (33), lequel peut être déplacé axialement par rapport à l'élément d'enveloppe (31, 35, 131) et la section de cylindre (33), l'anneau (32, 34, 132) portant une seconde partie de la première image (I1-I6, I1'-I6') lorsqu'il est relié à la section de cylindre (33), et porte une seconde partie de la seconde image (I1-I6, Il'-I6') lorsqu'il est relié à l'élément d'enveloppe (31, 35, 131).
  2. Cylindre selon la revendication 1,
    caractérisé par
    un entraînement (56, 156) en vue du déplacement axial de l'élément d'enveloppe (31, 35, 131) par rapport à l'anneau (32, 34, 132) et par rapport à la section de cylindre (33) dans un premier mode de service et en vue du déplacement axial de l'élément d'enveloppe (31, 35, 131) et de l'anneau par rapport à la section de cylindre (33) dans un second mode de service.
  3. Cylindre selon l'une quelconque des revendications précédentes,
    caractérisé par
    un second anneau (32, 34, 132) pouvant être déplacé axialement, disposé entre le premier anneau (32, 34, 132) et la section de cylindre (33).
  4. Cylindre selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que l'élément d'enveloppe (31, 35, 131) est relié à un corps (60) du cylindre (10) par le biais d'une liaison en queue d'aronde (54), la section de cylindre (33) étant fixe par rapport au corps (60).
  5. Cylindre selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que l'élément d'enveloppe (31, 35, 131) se trouve sur un premier côté de la section de cylindre (33) et en ce que sur l'autre côté de la section de cylindre (33) est prévu un second élément d'enveloppe (31, 35, 131).
  6. Cylindre selon l'une quelconque des revendications précédentes,
    caractérisé par
    un autre élément d'enveloppe (31, 35, 131) disposé dans le sens circulaire à côté de l'élément d'enveloppe (31, 35, 131).
  7. Cylindre selon la revendication 6,
    caractérisé en ce
    que la section de cylindre (33) et les deux éléments d'enveloppe (31, 35, 131) portent chacun au moins partiellement deux images (I1-I6, I1'-I6').
  8. Cylindre selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que la section de cylindre (33), l'élément d'enveloppe (31, 35, 131) et l'anneau (32, 34, 132) présentent des canaux s'étendant axialement en vue de la fixation des plaques d'impression (42, 50), les plaques d'impression (42, 50) définissant les images (I1-I6, I1'-I6').
  9. Cylindre selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que la largeur (WR) de l'anneau (32, 34, 132) est inférieure à la largeur d'une image (I1-I6, I1'-I6').
  10. Cylindre selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que la largeur (WS) d'un élément d'enveloppe (31, 35, 131) est supérieure à la somme de la double largeur (WR) d'un anneau (32, 34, 132) et de la largeur (WC) de la section de cylindre (33) ou égale à cette somme.
  11. Presse rotative à bobines,
    caractérisée par
    au moins un cylindre d'impression selon l'une quelconque des revendications précédentes.
  12. Utilisation du cylindre d'impression selon l'une quelconque des revendications 1 à 10 dans un procédé d'application de plusieurs images sur un cylindre d'impression, comprenant les étapes de procédé suivantes :
    - prévision d'une section intermédiaire entre la section de cylindre (33) et l'élément d'enveloppe (31, 35, 131), la section intermédiaire étant plus large que l'anneau (32, 34, 132) ;
    - positionnement axial de l'anneau (32, 34, 132) sur la section de cylindre (33) et application de la première partie de la première image (I1-I6, I1'-I6') sur l'anneau (32, 34, 132), ou au choix
    - positionnement axial de l'anneau (32, 34, 132) sur l'élément d'enveloppe (31, 35, 131) et application d'une partie de la seconde image ((I1-I6, Il'-I6') sur l'anneau (32, 34, 132).
EP02017722A 2001-09-07 2002-08-08 Cylindre porte-plaque pour plusieurs images Expired - Lifetime EP1291175B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US948232 1986-12-31
US09/948,232 US6868783B2 (en) 2001-09-07 2001-09-07 Printing press with multiple-image-carrying cylinder

Publications (2)

Publication Number Publication Date
EP1291175A1 EP1291175A1 (fr) 2003-03-12
EP1291175B1 true EP1291175B1 (fr) 2008-02-13

Family

ID=25487516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017722A Expired - Lifetime EP1291175B1 (fr) 2001-09-07 2002-08-08 Cylindre porte-plaque pour plusieurs images

Country Status (4)

Country Link
US (1) US6868783B2 (fr)
EP (1) EP1291175B1 (fr)
AT (1) ATE385896T1 (fr)
DE (2) DE10236341A1 (fr)

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JP3679929B2 (ja) 1998-06-16 2005-08-03 三菱重工業株式会社 分割版胴の軸方向見当調整装置
DE10135506A1 (de) 2000-07-28 2002-02-07 Heidelberger Druckmasch Ag Plattenzylinder zur Aufnahme mehrerer Druckplatten
US6553908B1 (en) 2000-09-29 2003-04-29 Heidelberger Druckmaschinen Ag Web fanout control system

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US6868783B2 (en) 2005-03-22
US20030047092A1 (en) 2003-03-13
ATE385896T1 (de) 2008-03-15
EP1291175A1 (fr) 2003-03-12
DE10236341A1 (de) 2003-03-27
DE50211660D1 (de) 2008-03-27

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