EP1202863B1 - Dispositif de guidage courbe pour machine a imprimer - Google Patents

Dispositif de guidage courbe pour machine a imprimer Download PDF

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Publication number
EP1202863B1
EP1202863B1 EP00943978A EP00943978A EP1202863B1 EP 1202863 B1 EP1202863 B1 EP 1202863B1 EP 00943978 A EP00943978 A EP 00943978A EP 00943978 A EP00943978 A EP 00943978A EP 1202863 B1 EP1202863 B1 EP 1202863B1
Authority
EP
European Patent Office
Prior art keywords
printing
plate
sheet guiding
guiding device
cylinder
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.)
Revoked
Application number
EP00943978A
Other languages
German (de)
English (en)
Other versions
EP1202863A1 (fr
Inventor
Jürgen Schölzig
Ulrich Dr.-Ing. Jung
Thomas Dipl.-Ing. Walther
Ruth Dr.-Ing. Kremer
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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Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1202863A1 publication Critical patent/EP1202863A1/fr
Application granted granted Critical
Publication of EP1202863B1 publication Critical patent/EP1202863B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F22/00—Means preventing smudging of machine parts or printed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/08—Print finishing devices, e.g. for glossing prints

Definitions

  • the invention relates to a sheet guiding device for a Printing machine according to the preamble of the main claim and serves to support the arch guidance in the area of a Printing or painting gap.
  • a sheet guiding device is, for example, from EP 0 306 682 A2 known.
  • the setup is essentially made of two blow strips acted upon by blowing air, the front and after that by a blanket cylinder and an impression cylinder formed pressure gap across the cylinder width axially parallel are arranged.
  • the front blow bar in the conveying direction is in the gusset-shaped space above the incoming arch arranged between blanket cylinder and impression cylinder.
  • the Blown air flow is on the blanket cylinder in the Printing zone itself as well as on top of that on the impression cylinder the bow guided in the gripper closure.
  • the Invention primarily describes the sheet guiding device in Print mode (print on position). It is also in the Printing practice common that with the blanket cylinder turned off (Pressure down position) maintain the blown air mode is, for example when checking the paper flow or when a printing unit is not involved in printing.
  • the arched Printing material is then in the gripper closure on the printing cylinder through the pressure gap (contactless to the inactive blanket cylinder) conveyed through the printing unit by means of blown air.
  • a sheet guiding device in a printing press for guiding printing materials in the area of blanket / form cylinders and sheet guiding cylinders in inactive blanket / form cylinders.
  • the blanket / form cylinder can be positioned and fixed in position in the print from position with a cylinder channel adjacent to the lateral surface of the sheet guiding cylinder, the blanket / form cylinder being able to be stopped on the drive side by means of a coupling.
  • Sheet guiding elements are provided in the cylinder channels, which mechanically and / or pneumatically ensure sheet guidance.
  • the disadvantage of these pneumatically actuated sheet guiding devices is that the efficiency of the sheet guiding is reduced with a higher basis weight or certain elasticities of the printing materials, such as for cardboard or sheet metal. Due to the relative movement with a stationary blanket / form cylinder and conveyed printing material, the risk of smearing increases and the print quality can be impaired.
  • the invention has for its object a sheet guiding device in a printing press to create the one uniform guidance of a printing material on a sheet guiding cylinder, preferably a pressure cylinder, at a printing / coating unit not involved in the printing / coating process permitted and a smear-free passage through the arcuate Printing material through a blanket / form cylinder and Guaranteed sheet guide cylinder formed printing / varnish gap.
  • the task is determined by the training characteristics of the main claim solved. Further training results from the subclaims.
  • Coating unit is comparable to an offset printing unit, by the blanket cylinder of the printing unit then known corresponds to the forme cylinder of the coating unit, which with a Applicator roller and a paint dosing system in functional connection is.
  • a printing cylinder is both in the printing unit and also used in the coating unit as a sheet guide cylinder.
  • the blanket / forme cylinder fixed plate or film for example a printing form or printing film, with a color / varnish-repellent surface coating educated.
  • the plate or film with a silicone rubber layer is preferred educated.
  • a plate or film is in particular a printing form or printing film, which as High-pressure form or as planographic form with color / iack repellent Coating can be used.
  • the high pressure form over the entire area or with zones across the width distributed silicone rubber layers, preferably in the conveying direction of the sheet-shaped printing material arranged, formed his.
  • planographic printing plate for the dampening agent-free Offset printing, also waterless offset printing or dry flat printing called, applicable.
  • a planographic printing plate has among other things a silicone rubber layer and one photosensitive photopolymer layer.
  • the photopolymer layer experiences UV exposure under a positive a hardening and combines with the Silicone rubber layer.
  • the silicone rubber layer hardened in this way the printing form repels ink or varnish.
  • this planographic printing plate for the dampening agent-free Offset printing with a full-surface silicone rubber layer educated.
  • across the width of this planographic printing plate zoned silicone rubber layers preferably in the conveying direction of the sheet-like printing material, arranged.
  • a further development is a plate as a printing film trained and fixed on the forme cylinder, which as upper layer has a full-surface silicone rubber layer, the associated substrate having at least one carrier plate, e.g. is an aluminum plate, or a rubber blanket.
  • a plate or film with a paint / varnish-repellent coating with a very smooth surface or surface layer is fixed on the blanket cylinder or forme cylinder.
  • Such a coating preferably has a surface roughness of approximately 1 to 10 ⁇ m.
  • a first surface or surface layer consists of chromium or aluminum or contains at least a portion thereof.
  • a surface or surface layer consists of organic-inorganic hybrid polymers, which is arranged on a substrate consisting of aluminum or at least containing aluminum.
  • incorporations of a fluoropolymer or fluoropolymers in a composite, for example in cracks, gaps or pores, into the above-mentioned surface or surface layer made of chromium or aluminum, including anodized aluminum, can also be implemented. If a plate / film is formed with a chrome surface or at least a surface containing chromium, such a plate / film can also be implemented with a mirror-polished surface.
  • Blanket / form cylinder with a plate or foil, e.g. Printing form or printing film, with color / varnish-repellent coating is not involved in a printing / painting process
  • An arc-shaped printing material fixed in the gripper closure is then with the already printed and / or painted side (assigned to the blanket / form cylinder) by means of a Sheet guiding cylinder can be conveyed through a printing / lacquer gap.
  • the advantage here is that to implement the sheet guide the blanket / form cylinder with plate or film and paint / varnish repellent coating can be operated in rotation.
  • the on a rotating sheet guide cylinder especially pressure cylinders printed and / or coated printing material and an associated rotating blanket / form cylinder (with plate or film with paint / varnish-repellent coating) at Running rotating relative movements noticeably low Frictional moments on, which already the risk of lubrication is reduced.
  • Another advantage is that a drive with Coupling for positioning the cylinder channel to the pressure cylinder and stop the blanket / forme cylinder is.
  • Another advantage is that the sheet guiding device regardless of the basis weight or the elastic modulus of the to be processed sheet-shaped substrates.
  • blowing devices can be arranged before or after the printing / varnish gap, which support the transport of the printing materials on the sheet guide cylinder.
  • a sheet-fed rotary printing press is in series construction according to FIG shown.
  • FIG. 1 shows a partial view of such a printing press for inline finishing.
  • the plate cylinder 13 is an inking unit and if necessary, assigned a dampening system to which not here to be discussed in more detail.
  • the printing unit 14 is followed in the conveying direction 5 by a first coating unit 15, which is formed by a forme cylinder 2, an application roller 3 and a metering system 4, for example a metering roller (two-roller unit) or a doctor blade or at least one dipping roller working according to the scoop roller principle.
  • the corresponding metering system 4 can be used optionally.
  • the form cylinder 2 is in turn assigned to the impression cylinder 1.
  • a drying device 20, for example an infrared (IR) dryer, an adjacent printing cylinder 1 or an adjacent transfer cylinder 17 is assigned to the first coating unit 15.
  • the dryer device 20 is followed in the conveying direction 5 by a second coating unit 16 with forme cylinder 2, applicator roller 3 and optionally applicable metering system 4.
  • the printing cylinders 1 and printing units 14, coating units 15, 16 and the drying unit 20 are connected to one another by means of transfer cylinders 17 for sheet transport.
  • the printing cylinders 1 and the transfer cylinders 17 are double-sized in relation to a single-size blanket cylinder 12 or a single-size forme cylinder 2 and have gripper systems 7, 8 arranged symmetrically on the circumference.
  • the second coating unit 16 is followed in the conveying direction 5 by a delivery arm 18, which supplies the sheet-like printing material to a delivery stack 9 in a known manner by means of circulating chain systems 19 and stores it there.
  • Fig. 2 shows the second coating unit 16 inactive, ie it is not involved in the painting process.
  • the metering system 4 is formed by a chambered doctor blade with an associated screened application roller 3.
  • a plate or film 11, here a printing form 11, alternatively this can also be a printing film 11, is fixed on the forme cylinder 2 of the coating unit 16 having a cylinder channel 6.
  • the plate / film or printing form / printing film 11 is provided with a color / lacquer-repellent surface, preferably a coating, and can preferably be fixed in the region of the cylinder channel 6.
  • the plate / film 11 is a printing form / printing film with a silicone rubber layer on the surface.
  • a planographic printing plate for dampening agent-free offset printing with a full-surface, ink / varnish-repellent silicone rubber layer is arranged on the form cylinder 2 as a plate / film 11.
  • the plate / film 11 is designed as a high-pressure mold.
  • the forme cylinder 2 can be set in a pressure-down position, so that there is a free space between the impression cylinder 1 and the forme cylinder 2 is formed in the printing gap or lacquer gap 10.
  • One already previously printed sheet-shaped printing material is in the Gripper closure from the rotating printing cylinder 1 through the Printing / varnish gap 10 of those not involved in the printing / varnishing process Coating unit 16 performed.
  • the forme cylinder 2 is taken into account the substrate thickness - in a position with a gentle print delivery to the substrate can be set. That there is only one defined, minor one frictional contact between the printing form 11 on the Forme cylinder 2 and the one fixed on the impression cylinder 1 Printing material.
  • the one previously printed and / or varnished sheet-shaped printing material is in the gripper closure of the rotating Printing cylinder 1 through the printing / lacquer gap 10 of the in the painting process involved coating unit 16 performed. simultaneously rotates the one in a gentle pressure supply Forme cylinder 2 (with printing form / printing film 11) at machine speed in conveying direction 5 and the substrate in contact with the printing form / printing film 11 without lubrication led the printing / varnish gap 10.
  • a plate or film 11 with a paint / varnish-repellent surface or surface layer can be brought into contact with a release agent.
  • the release agent can be transferred - when the paint supply is interrupted - via the metering system 4, for example a chamber doctor blade with feed and return line, and the application roller 3 to the plate or film 11 on the forme cylinder 2, the forme cylinder 2 rotating.
  • the release agent preferably contains at least silicone and / or water.
  • the forme cylinder 2 is assigned an additional device with which the release agent can be transferred to the plate or film 11 fixed to the forme cylinder 2 with a coating which repels the paint / varnish.
  • a spray device extending in the axial direction across the width of the forme cylinder 2 is suitable, the spray nozzles of which are directed onto the forme cylinder 2, so that the release agent can be transferred to the plate / film 11.
  • release agents prevents possible splitting of the ink or varnish from the printed / varnished substrate to the plate or film.
  • the release agent counteracts possible contamination of the plate / film by splitting the paint / lacquer. This means that otherwise necessary cleaning processes can be reduced.
  • the plate or film 11 fixed on the forme cylinder 2 can be tempered with a surface that repels the paint / varnish.
  • the plate / film 11 is associated with a temperature control device that supplies cold air. The cold air is directed onto the plate / film 11 and forms a moist film as condensate on this plate / film 11, which acts as a release agent.
  • the forme cylinder 2 (or blanket cylinder 12) carrying the plate / film 11 can be tempered within the cylinder jacket.
  • the forme cylinder 2 is again involved in the painting process will be the printing form / printing film 11 with paint / ink-repellent Surface coating against, for example Rubber blanket or a flexographic printing plate replaced, the paint supply activated and then the forme cylinder 2 in Pressure applied.
  • the solution according to the invention is not based on a forme cylinder 2 or comparable blanket cylinder 12 limited. Much more is the respective cylinder 2.12 by a not Print / painting process involved roller with ink / varnish repellent Surface substitutable. The roller is then assigned to the sheet guide cylinder 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Coating Apparatus (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Methods (AREA)

Claims (18)

  1. Machine d'impression, comportant des unités d'impression/vernissage ne participant pas au processus d'impression/vernissage avec un système de dosage et au moins un rouleau d'application, où des cylindres porte-blanchet/porte-cliché peuvent être amenés en position d'arrêt d'impression par, à chaque fois, le cylindre de guidage de feuilles associé, et un dispositif de guidage de feuilles pour guider la matière d'impression du type feuille dans la fente d'impression/vernissage,
    caractérisée en ce que, comme dispositif de guidage de feuilles, il est agencé, sur le cylindre porte-blanchet/porte-cliché (12, 2), une plaque ou feuille (11) ayant une surface repoussant l'encre ou le vernis, en ce que le cylindre porte-blanchet/porte-cliché (12, 2) peut être entraíné à la vitesse de machine et une matière d'impression fixée dans l'emprise des pinces, associée par le côté imprimé et/ou verni, au cylindre porte-blanchet/portecliché (12, 2) pouvant être transportée, au moyen du cylindre de guidage de feuilles (1) à travers la fente d'impression/vernissage (10).
  2. Dispositif de guidage de feuilles selon la revendication 1,
    caractérisé en ce que la plaque ou feuille (11) est un cliché/feuille d'impression, qui présente une couche de caoutchouc silicone sur la surface.
  3. Dispositif de guidage de feuilles selon la revendication 2,
    caractérisé en ce que le cliché/feuille d'impression (11) est une plaque d'impression plane.
  4. Dispositif de guidage de feuilles selon la revendication 3,
    caractérisé en ce que le cliché/feuille d'impression (11) est une plaque d'impression plane pour l'impression offset sans agent de mouillage.
  5. Dispositif de guidage de feuilles selon les revendications 1 et 2,
    caractérisé en ce que la plaque/feuille (11) est une plaque typographique.
  6. Dispositif de guidage de feuilles selon au moins la revendication 1,
    caractérisé en ce que le cylindre porte-blanchet/porte-cliché (12, 2) pouvant tourner peut être positionné dans la position d'arrêt d'impression.
  7. Dispositif de guidage de feuilles selon au moins la revendication 1,
    caractérisé en ce que le cylindre porte-blanchet/porte-cliché (12, 2) pouvant tourner peut être positionné avec une position d'impression définie.
  8. Dispositif de guidage de feuilles selon la revendication 1,
    caractérisé en ce que la plaque/feuille (11) présente une surface en chrome ou aluminium ou aluminium anodisé ou comporte au moins une partie de celle-ci.
  9. Dispositif de guidage de feuilles selon la revendication 1,
    caractérisé en ce que la plaque/feuille (11) présente une surface en polymères hybrides organiques - inorganiques sur un substrat d'aluminium.
  10. Dispositif de guidage de feuilles selon les revendications 1 et 8,
    caractérisé en ce que la plaque/feuille (11) présente, dans les fissures, fentes ou pores de la surface en chrome ou aluminium ou aluminium anodisé, des inclusions d'au moins un fluoropolymère.
  11. Dispositif de guidage de feuilles selon la revendication 1,
    caractérisé en ce que la surface, formée en chrome, de la plaque/feuille (11) est polie comme un miroir.
  12. Dispositif de guidage de feuilles selon la revendication 1,
    caractérisé en ce que la plaque/feuille (11) peut être amenée en contact avec un agent de séparation.
  13. Dispositif de guidage de feuilles selon les revendications 1 et 12,
    caractérisé en ce que l'agent de séparation contient au moins de la silicone et/ou de l'eau.
  14. Dispositif de guidage de feuilles selon les revendications 1 et 12,
    caractérisé en ce que l'agent de séparation peut être transmis, par l'intermédiaire du système de dosage (4) et du rouleau d'application (3), sur la plaque/feuille (11) fixée sur le cylindre porte-cliché (2).
  15. Dispositif de guidage de feuilles selon les revendications 1 et 12,
    caractérisé en ce que l'agent de séparation peut être transmis, au moyen d'un dispositif de pulvérisation s'étendant en direction axiale sur la largeur du cylindre porte-cliché (2), sur la plaque/feuille (11).
  16. Dispositif de guidage de feuilles selon la revendication 1,
    caractérisé en ce que la plaque/feuille (11) peut être équilibrée en température.
  17. Dispositif de guidage de feuilles selon les revendications 1 et 16,
    caractérisé en ce que, à la plaque/feuille (11), il est associé, de façon voisine, un dispositif d'équilibrage en température amenant de l'air froid.
  18. Dispositif de guidage de feuilles selon les revendications 1 et 16,
    caractérisé en ce que le cylindre porte-blanchet/porte-cliché (2) portant la plaque/feuille (11) peut être équilibré en température à l'intérieur de l'enveloppe du cylindre.
EP00943978A 1999-07-16 2000-07-04 Dispositif de guidage courbe pour machine a imprimer Revoked EP1202863B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19933438A DE19933438B4 (de) 1999-07-16 1999-07-16 Druckmaschine mit nicht am Druck-/Lackierprozess beteiligten Druck-/Lackwerken
DE19933438 1999-07-16
PCT/EP2000/006212 WO2001005593A1 (fr) 1999-07-16 2000-07-04 Dispositif de guidage courbe pour machine a imprimer

Publications (2)

Publication Number Publication Date
EP1202863A1 EP1202863A1 (fr) 2002-05-08
EP1202863B1 true EP1202863B1 (fr) 2003-01-15

Family

ID=7915051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00943978A Revoked EP1202863B1 (fr) 1999-07-16 2000-07-04 Dispositif de guidage courbe pour machine a imprimer

Country Status (7)

Country Link
US (1) US7107902B1 (fr)
EP (1) EP1202863B1 (fr)
JP (1) JP2003504250A (fr)
AT (1) ATE231071T1 (fr)
CZ (1) CZ2002168A3 (fr)
DE (2) DE19933438B4 (fr)
WO (1) WO2001005593A1 (fr)

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CN112277456B (zh) * 2020-10-16 2022-04-05 深圳市雅佳图印刷有限公司 一种基于智能制造印刷用的压平装置

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Publication number Priority date Publication date Assignee Title
DE102011017252A1 (de) 2011-04-15 2012-02-16 Heidelberger Druckmaschinen Ag Flexoplatten zum Bedrucken oder Lackieren von Bogen

Also Published As

Publication number Publication date
DE19933438B4 (de) 2004-07-08
DE19933438A1 (de) 2001-04-05
CZ2002168A3 (cs) 2002-06-12
DE50001114D1 (de) 2003-02-20
ATE231071T1 (de) 2003-02-15
US7107902B1 (en) 2006-09-19
WO2001005593A1 (fr) 2001-01-25
JP2003504250A (ja) 2003-02-04
EP1202863A1 (fr) 2002-05-08

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