EP1202863A1 - Dispositif de guidage courbe pour machine a imprimer - Google Patents

Dispositif de guidage courbe pour machine a imprimer

Info

Publication number
EP1202863A1
EP1202863A1 EP00943978A EP00943978A EP1202863A1 EP 1202863 A1 EP1202863 A1 EP 1202863A1 EP 00943978 A EP00943978 A EP 00943978A EP 00943978 A EP00943978 A EP 00943978A EP 1202863 A1 EP1202863 A1 EP 1202863A1
Authority
EP
European Patent Office
Prior art keywords
printing
film
plate
cylinder
sheet guiding
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.)
Granted
Application number
EP00943978A
Other languages
German (de)
English (en)
Other versions
EP1202863B1 (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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7915051&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1202863(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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

Links

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 sheet guiding in the area of a printing or coating nip.
  • a sheet guiding device is known for example from EP 0 306 682 A2.
  • the device essentially consists of two blow strips charged with blown air, which are arranged axially parallel before and after the pressure gap formed by a Guinmituch cylinder and a pressure cylinder across the width of the cylinder.
  • the blowing bar at the front in the conveying direction is arranged in the gusset-shaped space above the incoming inlet between the Guinmituch cylinder and the pressure cylinder.
  • the air flow is here on the Guinmituch cylinder, in the
  • Printing zone itself and directed to the top of the sheet guided on the printing cylinder in the gripper closure.
  • the rear blow bar arranged in the conveying direction after the printing zone achieves a blowing air flow which is directed towards the top of the sheet guided on the printing cylinder and towards the blanket cylinder against the conveying direction.
  • the invention primarily describes the sheet guiding device in printing operation (print on position). It is also customary in printing practice that the blown air operation is maintained when the blanket cylinder is switched off (print from position), for example when checking the paper flow or when a printing unit is not involved in the printing.
  • the sheet-like printing material is then conveyed through the printing unit in the gripper closure on the printing cylinder through the printing gap (contactless to the inactive blanket cylinder) by means of blown air.
  • a sheet guiding device in a printing machine for guiding printing materials in the area of blanket / form cylinder and sheet guiding cylinder is included inactive blanket / form cylinder known.
  • 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 guiding.
  • a disadvantage of these pneumatically actuated sheet guiding devices is that the efficiency of the sheet guiding is reduced in the case of a higher basis weight or certain elasticities of the printing materials, such as cardboard or sheet metal.
  • the relative movement with a stationary blanket / form cylinder and conveyed printing material increases the risk of smearing and the print quality can be affected.
  • a coating device for a printing press which is arranged after the last printing unit. If a coating unit is not involved in the printing process or in the coating process (the coating system is switched off), the contact of a freshly printed upper side of the printing material on the forme cylinder can be prevented when it passes through the printing gap.
  • the painting unit is designed in two parts as a lower part and an upper part. The lower part receives the impression cylinder and the upper part the forme cylinder with the coating system. When the painting process is switched off (print from position), the upper part, which is mounted in swivel joints on the lower part, is pivoted away from the sheet-guiding pressure cylinder.
  • a relatively large distance between the forme cylinder and the impression cylinder in the printing gap (painting zone) can thus be achieved and the sheet can pass the painting unit without lubrication without the use of pneumatic sheet guiding means.
  • the upper part to the lower part and thus the forme cylinder to the sheet-guiding pressure cylinder is turned on again (pressure on position). For this purpose, the previously decoupled drive is brought back into engagement.
  • the invention has for its object to provide a sheet guiding device in a printing press, which allows a uniform guidance of a printing material on a sheet guiding cylinder, preferably a printing cylinder, in a printing / coating unit not involved in the printing / coating process and a smear-free passage through the sheet-shaped printing material is guaranteed by a printing / varnish gap formed by blanket / form cylinder and sheet guide cylinder.
  • one or more coating units can also be assigned to the printing units for inline finishing.
  • a coating unit is comparable to an offset printing unit in that the blanket cylinder of the printing unit then, as is known, corresponds to the forme cylinder of the coating unit, which is functionally connected to an application roller and a coating metering system.
  • a printing cylinder is used both in the printing unit and in the coating unit as a sheet guide cylinder.
  • a plate or film for example a printing form or printing film, which is fixed on the blanket / form cylinder, is formed with a surface coating which repels dye / varnish.
  • the plate or film is preferably formed with a silicone rubber layer.
  • a plate or film is in particular a printing form or printing film, which as
  • High pressure form or as a plan printing form with stain / paint repellent coating can be used.
  • the high-pressure mold can be formed over the entire surface or with silicone rubber layers distributed zonally over the width, preferably arranged in the conveying direction of the sheet-like printing material.
  • a planographic printing plate can be used for offset printing without dampening agent, also called waterless offset printing or dry flat printing.
  • a planographic printing plate has, among other things, a silicone rubber layer and a light-sensitive photopolymer layer.
  • the photopolymer layer undergoes curing and thereby bonds with the silicone rubber layer.
  • the silicone rubber layer of the printing form hardened in this way repels ink or lacquer.
  • this planographic printing plate is designed with a full-surface silicone rubber layer for dampening agent-free offset printing.
  • silicone rubber layers are arranged in zones across the width of this planographic printing plate, preferably in the conveying direction of the sheet-shaped printing material.
  • a plate is used as a printing film formed and fixed on the forme cylinder, which has a full-surface silicone rubber layer as the upper layer, the associated substrate being at least one carrier plate, for example an aluminum plate, or a rubber blanket.
  • a plate or film with a color / paint-repellent coating with a very smooth surface or surface layer is fixed on the blanket cylinder or forme cylinder.
  • a coating preferably has a surface roughness of approximately 1 to 10 ⁇ m.
  • a first surface or surface layer consists of chrome or aluminum or contains at least a portion thereof. In a further training there is a surface or
  • Surface layer made of organic-inorganic hybrid polymers, which is arranged on a substrate consisting of aluminum or at least containing aluminum.
  • Fluoropolymer or fluoropolymers in the composite for example in cracks, gaps or pores, in the above-mentioned surface or surface layer made of chromium or aluminum, including anodized aluminum, can be realized. 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 film, for example printing form or printing film, with a dye / varnish-repellent coating is in a printing / varnishing unit not involved in the printing / varnishing process in a print off position or a Position with gentle print supply to the substrate - taking into account the substrate thickness - can be moved.
  • An arc-shaped printing material fixed in the gripper closure is then attached to the already printed and / or lacquered side (assigned to the blanket / form cylinder) by means of a
  • Sheet guiding cylinder can be conveyed through a printing / lacquer gap.
  • the blanket / forme cylinder can be operated in a rotating manner with a plate or film and a dye / paint-repellent coating in order to implement the sheet guidance.
  • a rotating sheet guiding cylinder in particular the printing cylinder, and an assigned rotating blanket / form cylinder (with plate or film with ink / varnish-repellent coating) when rotating relative movements take place Frictional moments, which reduces the risk of greasing.
  • the dye / varnish repellent coating of the plate or film fixed on the blanket / form cylinder enables the dye / varnish splitting to be significantly reduced, so that impairment of the print quality can also be avoided.
  • Another advantage is that a drive with clutch for positioning the cylinder channel to the impression cylinder and stopping the blanket / forme cylinder is not necessary.
  • the sheet guiding device can be used regardless of the basis weight or the elasticity module of the sheet-shaped printing materials to be processed. Pneumatically actuated blowpipes arranged before and after the printing / lacquer gap or sheet guiding elements arranged in the cylinder channel are not required.
  • 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.
  • Fig. 2 is a sheet guide device in
  • a sheet-fed rotary printing machine is shown in a row construction in accordance with FIG.
  • Several printing units for multi-color printing with sheet guiding cylinders 1, for example printing cylinders, are lined up and connected to one another with transfer cylinders 17 or turning systems.
  • Fig.l shows a partial view of such a printing machine for inline finishing.
  • Blanket cylinder 12 and impression cylinder 1 are shown as sheet guiding cylinders.
  • the plate cylinder 13 is assigned an inking unit and possibly a dampening unit, which will not be discussed in more detail here.
  • 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 chamber doctor blade or at least one plunger roller operating 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 drying 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 rubber blanket cylinder 12 or a single-size forme cylinder 2 and have gripper systems 7, 8 arranged symmetrically distributed 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 arm stack 9 in a known manner by means of circulating chain systems 19 and deposits it there.
  • Fig. 2 shows the second coating unit 16 inactive, that is, it is not involved in the painting process.
  • the metering system 4 is formed by a chambered doctor blade with an associated rastered 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 dye / varnish repellent surface, preferably a coating, and can preferably be fixed in the area 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 / paint-repellent silicone rubber layer is arranged on the form cylinder 2 as plate / film 11.
  • the plate / film 11 is designed as a high-pressure mold.
  • the forme cylinder 2 can be set in a printing-off position, so that a free space is formed in the printing nip or lacquer nip 10 between printing cylinder 1 and forme cylinder 2.
  • a previously printed sheet-shaped printing material is guided in the gripper closure from the rotating printing cylinder 1 through the printing / lacquer gap 10 of the coating unit 16 not involved in the printing / lacquering process.
  • the forme cylinder 2, which is in the print-off position rotates with printing form 11 or printing film 11 at machine speed in the conveying direction 5, and the printing material is transported through the printing / varnish gap 10 without smearing.
  • the forme cylinder 2 can be set into a position with a gentle provision of printing on the printing medium, taking into account the printing material thickness. That is, there is only a defined, slight frictional contact between the printing form 11 on the form cylinder 2 and the printing material fixed on the printing cylinder 1.
  • the previously printed and / or varnished sheet-shaped printing material is guided in the gripper closure by the rotating printing cylinder 1 through the printing / varnish gap 10 of the varnishing unit 16 not involved in the varnishing process.
  • the one in a gentle pressure position rotates Forme cylinder 2 (with printing form / printing film 11) at machine speed in the conveying direction 5 and the printing material is guided in contact with the printing form / printing film 11 without smearing through the printing / varnish gap 10.
  • a plate or film 11 with a paint / lacquer-repellent surface or surface layer can be brought into contact with a release agent.
  • the release agent is - when the paint supply is interrupted - via the dosing system 4, e.g. a chambered doctor blade with feed and return line, and the applicator roller 3 can be transferred 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 on 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 off 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 a temperature control device that supplies cold air O 01/05593
  • 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 position of the forme cylinder 2, alternatively of the blanket cylinder 12, with a defined pressure supply to the printing material or the print-off position of the blanket / form cylinder is not limited to one of the configurations of plate or film 11.
  • the printing form / printing film 11 with the varnish / ink-repellent surface coating is replaced by, for example, a rubber blanket or a flexographic printing plate, the varnish supply is activated and then the forme cylinder 2 is brought into the printing position.
  • the solution according to the invention is not limited to a forme cylinder 2 or comparable blanket cylinder 12. Rather, the respective cylinder 2, 12 can be replaced by a roller which is not involved in the printing / painting process and has a surface which repels the ink / paint. The roller is then assigned to the sheet guiding cylinder 1. O 01 12

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Printing Methods (AREA)
  • Coating Apparatus (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
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
DE19933438 1999-07-16
DE19933438A DE19933438B4 (de) 1999-07-16 1999-07-16 Druckmaschine mit nicht am Druck-/Lackierprozess beteiligten Druck-/Lackwerken
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 true EP1202863A1 (fr) 2002-05-08
EP1202863B1 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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DE10144165B4 (de) * 2001-09-08 2010-06-17 Koenig & Bauer Aktiengesellschaft Vorrichtung zur Bogenführung
DE10209297A1 (de) * 2002-03-01 2003-09-18 Koenig & Bauer Ag Oberfläche für Maschinenteile einer Druckmaschine
DE10253745A1 (de) * 2002-11-19 2004-06-17 Nexpress Solutions Llc Verfahren und Vorrichtung zur Vermeidung von Öleintrag in eine Druckmaschine
EP1880846B1 (fr) * 2006-07-18 2012-12-19 Heidelberger Druckmaschinen AG Presse offset à feuilles
DE102006033104A1 (de) * 2006-07-18 2008-01-24 Heidelberger Druckmaschinen Ag Bogenoffsetdruckmaschine
DE102006041219A1 (de) * 2006-09-02 2008-03-06 Koenig & Bauer Aktiengesellschaft Inline-Verfahren und Druckmaschine zum beidseitigen Bedrucken von Bogen
JP2010228135A (ja) * 2009-03-26 2010-10-14 Ryobi Ltd コーティング装置を備えた印刷機
DE102011017252A1 (de) 2011-04-15 2012-02-16 Heidelberger Druckmaschinen Ag Flexoplatten zum Bedrucken oder Lackieren von Bogen
SG193442A1 (en) * 2011-12-20 2013-10-30 Ocws Logistics Pte Ltd A system and method for managing transportation resources and transporting freight containers
DE102013203968A1 (de) 2012-03-08 2013-09-12 Koenig & Bauer Aktiengesellschaft Bogenführung
DE102013213060B4 (de) 2012-07-06 2022-11-03 Koenig & Bauer Ag Vorrichtung und Verfahren zur Bogenführung in einem nicht am Druckprozess beteiligten Druckwerk
CN104401121B (zh) * 2014-09-16 2017-02-08 成都博瑞传播股份有限公司 一种应用于轮转印刷机的新型防纸带转向蹭脏装置
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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Also Published As

Publication number Publication date
JP2003504250A (ja) 2003-02-04
WO2001005593A1 (fr) 2001-01-25
US7107902B1 (en) 2006-09-19
DE50001114D1 (de) 2003-02-20
DE19933438A1 (de) 2001-04-05
ATE231071T1 (de) 2003-02-15
CZ2002168A3 (cs) 2002-06-12
DE19933438B4 (de) 2004-07-08
EP1202863B1 (fr) 2003-01-15

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