EP1442884B1 - Procédé pour le guidage stable d'une bande de largeur moyenne dans des unités d'impression d'une machine à imprimer - Google Patents

Procédé pour le guidage stable d'une bande de largeur moyenne dans des unités d'impression d'une machine à imprimer Download PDF

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Publication number
EP1442884B1
EP1442884B1 EP04001274A EP04001274A EP1442884B1 EP 1442884 B1 EP1442884 B1 EP 1442884B1 EP 04001274 A EP04001274 A EP 04001274A EP 04001274 A EP04001274 A EP 04001274A EP 1442884 B1 EP1442884 B1 EP 1442884B1
Authority
EP
European Patent Office
Prior art keywords
printing
unit
protective medium
roller
metering
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 - Fee Related
Application number
EP04001274A
Other languages
German (de)
English (en)
Other versions
EP1442884A1 (fr
Inventor
Georg Schmid
Martin Endisch
Josef Singler
Konrad Brummer
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
Manroland 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 Manroland AG filed Critical Manroland AG
Publication of EP1442884A1 publication Critical patent/EP1442884A1/fr
Application granted granted Critical
Publication of EP1442884B1 publication Critical patent/EP1442884B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/20—Ink-removing or collecting devices
    • 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

Definitions

  • the invention relates to a method for a stable machine operation on printing units of a rotary printing machine for the operation with partially wide printing material according to claim 1.
  • WO 02058931 A2 is a device for improving the printing process, for example, in production with part-width paper webs known, applied to the non-printing areas of the rollers of the inking unit, in particular on the two ends of these rollers, the ink dissolving or decomposing solvent or applied dropwise to the At the ends of the rollers applied and accumulated ink to prevent loss of solvent and thus a resulting drying and sticking of the ink.
  • the disadvantage is that the solvent applied to the rollers or in the edge region of the rollers cums with time and with increasing speed and contaminates the printing press.
  • drying problems can occur at the edge of the paper web, as a result, a greasing in the dryer or depositing and / or marking in the folding structure or folder can occur.
  • the invention has the object to eliminate the above-mentioned disadvantages and to provide a method for a stable machine operation on printing units of an offset rotary printing press for the operation with varying and partially wide substrate, by means of which drying out of the ink at the non-printing areas of the rollers and cylinders Pressure unit is prevented and thus the stickiness - the so-called tack - is kept at a low level to reduce the risk of web breaks, and to reduce the burden of the rollers and blankets (sleeves).
  • a non-flowing medium such as a commercial roller paste or a roller grease
  • a non-flowing medium is finely distributed to the non-printing areas of a cylinder or a roller in the inking or dampening unit by means of blown air.
  • the non-flowing medium adheres to the surface of the cylinder or roller and prevents the paint from drying out and accumulating.
  • the non-flowing medium is finely distributed to the surface, ie to the non-printing areas, the cylinder or the roller in the inking or dampening unit by means of compressed air.
  • the non-flowing medium can be applied for example by means of a metering on the rider roll, such as a ceramic rider roll, or at any other incoming nip.
  • the non-flowing medium is distributed at the non-printing areas in the entire inking unit or in the entire roller mill. When operating with partially wide web color accumulates at the non-printing zones.
  • doctor units can be adjusted to remove the adhering in the course of the printing process and accumulating mixture of ink and non-flowing medium. Due to the axial movement of the rubbing cylinder in an inking unit, the ink has the characteristic during the printing process to migrate outward on the individual rollers and / or cylinders and build up on the rollers. Of the On the one hand, color build-up causes the machine to be sprayed and dirty, on the other hand, the color build-up causes higher wear of the rollers and blankets and reduces their service life. With the doctor units, it is now possible to produce a color flow by the doctor unit decreases the color of the rider roll and feeds the paint collector.
  • the squeegees By moving the squeegees on their receiving unit axially, or arranges in a certain way, can also make color separations on the roller or adjustments to narrower substrates.
  • the squeegees determine the track edge of the colored strip. But since several doctor blades can be arranged close to each other, the entire remaining color-free range can be covered, so that will certainly prevent spreading of the color beyond the track edge even with prolonged printing duration. But you can also adjust the width of the individual squeegee the width of the color-free zone, the squeegees of different widths are arranged interchangeable.
  • the operation of the doctor blade units takes place from the control desk.
  • the ink / protective medium mixture is removed by the doctor blade device, for example, from the rider roll or other rollers and / or cylinders, wherein both the setting and setting time can be freely selected depending on the production requirements.
  • each setting or Abrakelvorgang fresh non-flowing protective medium, such as roller paste is applied with a short time delay and the cycle begins again.
  • the doctor blades are switched on and off by means of a pneumatic cylinder, wherein the contact pressure of the doctor blade on the rider roll is adjustable. The squeegee must be evenly but only slightly adjusted to avoid excessive wear.
  • At least two lubrication points are provided on a printing unit in order to be able to apply the non-flowing medium to the non-printing areas.
  • the Fig. 1 shows an offset rotary printing machine 1 consisting of four printing units 2 to 5, wherein the printing units 2 to 5 can print a substrate 6, for example, both sides.
  • the in Fig. 1 shown printing material 6 does not draw on the total printing width 8 of individual rollers 9 and cylinder 10 of the printing units 2 to 5, so that at the respective edge zones of the rollers 9 and cylinder 10 non-printing areas 11 and 12 arise.
  • the printing units 2 to 5 thus print a part-width printing material 6.
  • metering nozzles 13 are arranged, by means of which, with the aid of blowing air, a non-flowing protective medium 14 on the surface.
  • the protective medium 14 is in the viscosity range of about 300 to 400 dPa * s.
  • Fig. 2 shows one of the printing units 2 to 5, wherein the printing material 6 is passed between two transfer cylinders 15, 16 and printed on both sides.
  • the transfer cylinders 15, 16 are connected to the form cylinders 17, 18 in connection, wherein the forme cylinder 17, 18 are supplied by built-up of several rolls color 19, 20 and dampening units 21, 22 with printing ink and dampening solution.
  • On at least one of the rollers of the ink 19, 20 and / or dampening 21, 22 and / or on one of the cylinders 15 to 18 is at its non-printing areas 11, 12, a doctor unit 23 on and off.
  • the doctor unit 23 on a rider roller 24 of the inking and dampening roller train on and off.
  • the metering nozzles 13 are arranged, for example, on the rider roll 24 and / or on an incoming gap 40 between a transfer roll 7 and the rider roll 24, or at any incoming nip.
  • the non-flowing protective medium 14 is distributed to the non-printing areas 11,12 throughout the inking unit 19, 20 or in the entire roller mill according to the width of the non-printing area 11,12.
  • the metering nozzles 13 can be positioned according to the width of the non-printing area 11,12 and / or activated accordingly, wherein a plurality of metering nozzles 13 can be arranged on the non-printing areas 11, 12 and by means of a computer and / or control unit, by means of the control station or can be controlled, activated and / or positioned by means of the machine control.
  • the metering nozzles 13 are supplied, for example, by a pump system 25 with distributor unit 26 with the protective medium 14.
  • An offset rotary printing machine 1, not shown in detail, can be equipped with a plurality of pump systems 25 for different printing units 2 to 5 and / or for different printing inks to be processed by means of the printing units 2 to 5.
  • the doctor unit 23 for example consisting of one or more doctor blades 27 and a rotating body, not shown, extends parallel to the rider roll 24 and is adjustable against this, wherein the doctor unit 23 is capable of, located on the rider roll 24 mixture of ink and not remove the flowing protective medium 14.
  • a doctor blades 27 are employed. These doctor blades 27 are fastened by means of a clamping unit 28 to a rod 29 whose axis is also parallel to the rider roll 24.
  • a collecting container 30 arranged below the squeegee 27.
  • adjustments to the respective width of the printing materials 6 can also be made. It is also possible to adapt the width of the individual squeegees 27 to the width of the non-printing regions 11, 12, with the squeegees 27 of different width being arranged to be exchangeable.
  • the doctor unit 23 is mounted in lever arms 31, which are connected to a pressure-medium-operated cylinder 32, by means of this cylinder 32, the doctor unit 23 on the rider roll 24 on and off.
  • Fig. 3 shows a metering unit 33, which consists of a pneumatically actuated valve 34, whereby in a defined time protective medium is metered into a blast air line 35.
  • the protective medium 14 is conveyed by means of the pump system 25 via the distributor unit 26 and lines 38, 39 to the metering valve 34. While the Blas Kunststoff effet 35 is acted upon, a small amount of protective medium 14 is passed into the Blas Kunststoffstrom 37. Due to the strong Ausblasströmung the protective medium 14 is divided and applied by the metering nozzles 13 finely distributed on the surface of the respective roller 9 and / or cylinder 10.
  • Fig. 4 shows a further metering unit 33 ', which consists of at least two pneumatically actuated valves 34', 41, wherein between the first valve 34 'and the second valve 41, a chamber 36 for metering the protective medium 14 is formed.
  • the protective medium 14 is conveyed by means of the pump system 25 'via the distributor unit 26' and lines 38 ', 39' in the chamber 36, wherein the first valve 34 'is opened and the second valve 41 remains closed.
  • the chamber 36 is completely or depending on the amount conveyed partially filled with protective medium 14, wherein the first valve 34 'is closed.
  • the second valve 41 is first opened and the first valve 34 'is supplied with blown air 37'.
  • the blown air 37 ' which penetrates into the chamber 36 in a pulsed or jerky manner, blows out the metered protective medium 14, whereby it is applied in a finely distributed manner on the surface of the respective roller 9 and / or cylinder 10 by the metering nozzles 13'.
  • the device is not intended to be limited to use only on offset rotary presses, especially sheetfed or web offset rotary presses.
  • the device can also be used on rotary high-pressure machines, for example flexographic printing presses, or rotogravure presses.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Screen Printers (AREA)
  • Rotary Presses (AREA)

Claims (9)

  1. Procédé de guidage stable d'une machine au niveau d'unités d'impression (2-5) dans une machine rotative d'impression (1), notamment une machine rotative d'impression offset pour fonctionner avec une bande d'impression (6) de largeur réduite, procédé selon lequel, on applique un milieu sur les zones non imprimées,
    procédé caractérisé en ce que
    sur les zones (11, 12) qui ne reçoivent pas d'impression, au moins un cylindre (9) d'un groupe d'encrage (19, 20) ou de mouillage (21, 22) et/ou sur les zones (11, 12) qui ne sont pas à imprimer d'au moins un cylindre de transfert (15, 16) ou d'un cylindre porte-plaques (17, 18), on applique un milieu protecteur (14) non fluide par de l'air soufflé (37) à l'aide d'une buse de dosage (13), le milieu étant finement réparti en formant un film protecteur en couche mince.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    pour une unité d'impression (2-5) ayant un groupe d'encrage (19, 20) et un groupe de mouillage (21, 22) avec un cylindre de chevauchement (24) et un cylindre de transfert (7), dans les zones qui ne sont pas à imprimer du cylindre de chevauchement (24), au moins une unité de racle (23) peut être appliquée ou dégagée et à la demande, un mélange formé du milieu protecteur (14) et de l'encre d'impression est enlevé des zones (11, 12) qui ne doivent pas être imprimées du cylindre de chevauchement (24).
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    le milieu protecteur (14) est appliqué sur le cylindre de chevauchement (24) et sur le cylindre de transfert (7).
  4. Procédé selon la revendication 3,
    caractérisé en ce que
    la buse de dosage (13) est installée dans l'intervalle d'entrée (40) du cylindre de transfert (7) et du cylindre de chevauchement (24).
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé par
    une unité de dosage (33) alimentant la buse de dosage (13) et qui se compose d'une soupape (34) à commande pneumatique qui permet le dosage du milieu protecteur (14) dans une conduite d'air de soufflage (35) pendant une durée définie.
  6. Procédé selon l'une des revendications 1 à 4,
    caractérisé par
    une unité de dosage (33') composée d'au moins deux soupapes (34', 41) à action pneumatique pour l'alimentation de la buse de dosage (13'), et entre la première soupape (34') et la seconde soupape (41), il est formé une chambre (36) pour doser le milieu protecteur (14), et le milieu protecteur (14) est fourni à cette chambre (36).
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce que
    le milieu protecteur (14) est une graisse, une huile, une encre, une pâte de circulation ou une pâte de cylindre et a une viscosité dans une plage de viscosité comprise entre 300 et 400 dPa*s.
  8. Procédé selon la revendication 2,
    caractérisé en ce que
    le déroulement chronologique et l'évolution des mouvements pour la mise en place et le dégagement des unités de racle (23) et l'application du milieu protecteur (14), sont commandés par une unité de calcul et/ou une unité de commande.
  9. Procédé selon la revendication 8,
    caractérisé en ce que
    l'unité de calcul et/ou l'unité de commande tiennent compte des états de fonctionnement généraux, notamment la largeur de la bande d'impression, la vitesse de défilement dans la machine, la durée de la mission et les températures dans le bâti des cylindres et dans les groupes de cylindres, on commande l'application du milieu protecteur (14) et/ou le raclage du mélange appliqué sur le milieu protecteur (14) et l'encre d'impression.
EP04001274A 2003-01-30 2004-01-22 Procédé pour le guidage stable d'une bande de largeur moyenne dans des unités d'impression d'une machine à imprimer Expired - Fee Related EP1442884B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10303608A DE10303608B4 (de) 2003-01-30 2003-01-30 Verfahren für einen stabilen Maschinenlauf an Druckeinheiten einer Rotationsdruckmaschine für den Betrieb mit teilbreitem Bedruckstoff
DE10303608 2003-01-30

Publications (2)

Publication Number Publication Date
EP1442884A1 EP1442884A1 (fr) 2004-08-04
EP1442884B1 true EP1442884B1 (fr) 2011-03-23

Family

ID=32603038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04001274A Expired - Fee Related EP1442884B1 (fr) 2003-01-30 2004-01-22 Procédé pour le guidage stable d'une bande de largeur moyenne dans des unités d'impression d'une machine à imprimer

Country Status (4)

Country Link
US (1) US7004069B2 (fr)
EP (1) EP1442884B1 (fr)
JP (1) JP2004230887A (fr)
DE (2) DE10303608B4 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005019881A1 (de) * 2005-04-28 2006-11-09 Maschinenfabrik Wifag Druckwerk mit Nebenlaufschmierung
KR102229714B1 (ko) * 2020-08-14 2021-03-19 드림인더스 주식회사 인쇄 테이프 제조방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2236805A (en) * 1940-09-11 1941-04-01 Ralph S Plaisted Ink fountain conversion device for printing presses
DE3800570A1 (de) * 1988-01-12 1989-07-20 Heidelberger Druckmasch Ag Druckwerk fuer rotationsdruckmaschinen
JP2827108B2 (ja) * 1996-10-08 1998-11-18 株式会社東京機械製作所 印刷機のダンプニング装置
US5303652A (en) * 1992-02-13 1994-04-19 Baldwin Technology Corporation Spray blanket cleaning system
US5490459A (en) * 1995-02-24 1996-02-13 Heidelberger Druckmaschinen Ag Printing press and method for removing ink build-up with sideways web movement
DE19546260C1 (de) * 1995-12-12 1996-11-21 Weitmann & Konrad Fa Verfahren zur Überwachung der Sprühmenge einer zur Befeuchtung bewegter Materialbahnen in die Breite versprühten Flüssigkeit über deren Breite, Vorrichtung zur Durchführung des Verfahrens, sowie Verwendung der Vorrichtung
US20020100379A1 (en) * 2001-01-26 2002-08-01 Wiese Dennis R. Printing process

Also Published As

Publication number Publication date
DE10303608B4 (de) 2008-05-08
US7004069B2 (en) 2006-02-28
DE502004012322D1 (de) 2011-05-05
JP2004230887A (ja) 2004-08-19
DE10303608A1 (de) 2004-08-19
US20040182263A1 (en) 2004-09-23
EP1442884A1 (fr) 2004-08-04

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