EP3988310A1 - Machine d'impression dotée d'un rouleau d'impression et d'un cylindre tramé ou d'un manchon tramé - Google Patents

Machine d'impression dotée d'un rouleau d'impression et d'un cylindre tramé ou d'un manchon tramé Download PDF

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Publication number
EP3988310A1
EP3988310A1 EP21200844.5A EP21200844A EP3988310A1 EP 3988310 A1 EP3988310 A1 EP 3988310A1 EP 21200844 A EP21200844 A EP 21200844A EP 3988310 A1 EP3988310 A1 EP 3988310A1
Authority
EP
European Patent Office
Prior art keywords
anilox
printing
roller
sleeve
anilox roller
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.)
Pending
Application number
EP21200844.5A
Other languages
German (de)
English (en)
Inventor
Werner Schwab
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 EP3988310A1 publication Critical patent/EP3988310A1/fr
Pending 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
    • B41F31/26—Construction of inking rollers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • 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
    • 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
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • 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
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • 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
    • B41F27/06—Devices for attaching printing elements or formes to supports for attaching printing elements to forme 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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/002—Heating or cooling of ink or ink rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/005—Ink viscosity control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0009—Central control units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/14—Automatic control of tripping devices by feelers, photoelectric devices, pneumatic devices, or other detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/16—Programming systems for automatic control of sequence of operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/04—Rotary letterpress machines for printing on webs
    • B41F5/16—Rotary letterpress machines for printing on webs for multicolour printing
    • B41F5/18—Rotary letterpress machines for printing on webs for multicolour printing using one impression cylinder co-operating with several forme cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing

Definitions

  • the invention relates to a printing machine having the features of the preamble of claim 1.
  • the invention is in the technical field of the graphics industry and there in particular in the area of using anilox rollers or anilox sleeves in printing machines, in particular in flexographic printing machines or in gravure printing machines.
  • an impression cylinder can also be an air cylinder with a sleeve on which the printing plate is mounted.
  • an air cylinder with a sleeve on which the printing plate is mounted.
  • the medium to be printed is guided between the print roller and a counter-pressure roller.
  • the print medium can be a web or a sheet.
  • the anilox roller is part of a printing inking unit. It is the storage medium that is intended to constantly provide a necessary and defined quantity of ink during the printing process. On the surface of the cylinder, which is made of ceramic or chrome, there are tiny cells or lines that are engraved using various engraving processes. The places that are not deepened are called ridges, the deepenings are usually called cups.
  • An anilox roller can consist of a core with a sleeve or a core with a grid. The anilox roller can be tempered, e.g. with water.
  • the paint is usually applied using a chamber squeegee system.
  • a squeegee the surface of the anilox roller, i.e. the ridges, is freed from protruding ink.
  • a defined and thus controllable amount of ink thus remains only in the depressions.
  • the anilox roller transfers the printing ink directly onto the printing plate/cliché, in that the indentations are always emptied evenly. However, emptying is never complete, with each rotation of the roller, ink is flushed through the cells.
  • the inking unit is supplied with a defined and reproducible volume of ink due to the rotation of the anilox roller and the associated uniform ink pick-up and removal.
  • the decisive parameters for the amount of ink transferred are the shape of the cells, their geometry, the opening and the material components of the anilox roller itself.
  • the cell shape and depth into the roller surface determine how much ink can be absorbed and released again.
  • the engraving depth determines the volume of the cell. Although an engraving can be deep, due to the shape and size of the cell, it can still have the same theoretical volume as a shallow engraving.
  • Anilox rollers can have a wide variety of engraving types. There are essentially hexagonal, pyramidal, truncated or dome-cup structures or also line structures or slalom engravings.
  • the grid can be coarse or fine be. As well as grids (scoop volume) that transport a lot or little color. Fine screening with little color volume is usually used with process colors CMYK in a 7-color color palette CMYKOGV.
  • anilox rollers with high ink transport capacity/scooping volume are used with coatings. Certain coatings require coating temperature control together with the anilox roller.
  • the paint temperature can be influenced directly with the anilox roller (water flow), e.g. by heating it, or the paint supply (e.g. hoses) or piping can be heated via pipe trace heating or the paint container itself or an additional paint heat exchanger, but also Color to be tempered.
  • the purpose of tempering paints is to positively influence the "lying behavior" of the paint.
  • Prepress information is exchanged with offset printing presses via PDF / JDF / XJDF.
  • PDF / JDF / XJDF there is currently no suitable and standardized interface for flexo or gravure printing machines.
  • a printing machine according to the invention with a printing roller and an anilox roller or an anilox sleeve for inking a printing forme of the printing roller is characterized in that the anilox roller or the anilox sleeve is assigned a machine-readable ID, that a sensor or a camera is provided, which the ID detects that a computer retrieves data, which are stored in a digital memory for the detected ID, from the memory and that the computer makes settings on the printing press on the basis of the read ID or the retrieved data.
  • the setting can be made on the basis of the read ID or the retrieved data by using the ID itself and/or by using data stored for the ID on the anilox roller or anilox sleeve or the anilox (e.g. cell depth).
  • the ID can be provided as a character string.
  • a device according to the invention or a method according to the invention serves to supply and remove printing ink to and from a doctor device of an inking unit of a rotary printing press.
  • the color system of a flexographic printing machine is set automatically.
  • the anilox roller or the anilox sleeve is recognized by an identification feature. From the data, various settings are made on the ink system of the printing machine. This is done using stored data and with the help of algorithms. The settings are made autonomously and corresponding setting data for the flexographic printing machine are derived.
  • a device according to the invention or a method according to the invention offers significant added value in the direction of automation and increases customer benefit. It not only offers setting the ideal setting for the ink system during setup and during production, which is done autonomously as required by the market, but it penetrates much deeper into the flexo or gravure printing process to deliver consistent print quality across all speed ranges. You can predict data for the flexo or gravure printing process, increasing efficiency, reducing costs and reducing risk in the print shop.
  • the invention is based, for example, on the knowledge that the smallest screen dot on the cliché/printing plate in flexographic printing should always be larger than the screen cell on the screen roller. Otherwise the halftone dot dips into the cell, absorbs too much ink and the overinking of the halftone dot leads to printing difficulties, e.g. B. a moiré formation or the so-called. Bridgeing.
  • the anilox roller should have a screen ruling of at least 240 L/cm, i.e. at least a factor of 5.
  • the invention is also based, for example, on the knowledge that high print quality is accordingly achieved by conformal transfer of ink between the printing plate and anilox roller.
  • the anilox roller must be selected correctly depending on the area of application of the print substrate (e.g. cardboard or foil, or aluminium), and the printing ink must be taken into account, e.g. its viscosity.
  • the invention advantageously makes it possible to automate settings on the printing press with regard to the ink system, consisting of, for example, anilox roller, doctor blade system, doctor blade system, ink supply, ink temperature, ink viscosity, ink pump, ink drying and ink circulation system cleaning.
  • the ink system consisting of, for example, anilox roller, doctor blade system, doctor blade system, ink supply, ink temperature, ink viscosity, ink pump, ink drying and ink circulation system cleaning.
  • One identification device is required for each printing unit.
  • an integrated NFC could also be used.
  • the ID or the data of the anilox roller are transferred from the machine to the machine control via a reader.
  • the machine then performs adjustments.
  • prepress data to the press is significantly more complicated in flexo and gravure printing compared to offset or digital printing.
  • Prepress and printing are usually separate here. This means that a prepress company supplies different printers with printing forms and printers receive printing forms from different prepress companies.
  • prepress and printing are not under one roof here and therefore cannot be easily networked via power cable, which means that data from prepress is not directly available to the printing press.
  • the procedure for the automatic setting of the color system in a flexographic printing machine is a useful addition to a measuring device/measuring procedure for measuring elevations on a flexographic printing form, as in the not yet published one DE102020111341 Registered.
  • a possible future step could be to use the prepress data directly on the anilox roller or in the printing unit - or to make it available to the printing press, but the identification of which anilox roller is or will be inserted remains.
  • the system is capable of processing prepress data in the form of (PDFs/JDFs/XJDFs) and is also capable of assigning this to the printed matter used
  • FIG. 1 shows a printing machine 1 according to the invention with an anilox roller 2 (alternatively: with an anilox sleeve 2) and a printing roller 3 (can also be referred to as a printing cylinder).
  • the printing roller is preferably a flexographic printing cylinder with a sleeve and flexographic plates mounted thereon (alternatively: preferably a gravure printing cylinder).
  • the ink is preferably supplied with a chamber doctor blade 6.
  • the anilox includes an ID.
  • the ID can be a one-dimensional barcode or a two-dimensional matrix code.
  • the ID can be read optically.
  • the printing machine 1 includes a sensor 4 or a camera 4.
  • the ID can alternatively be an NFC chip or an RFID chip. In this case, a corresponding reading device 4 is provided instead of the sensor/camera.
  • the ID read out is transmitted to a computer 5 of the printing press 1 .
  • the ID can simply be a unique identification of the anilox roller, eg a number; however, it can also contain additional information about the anilox roller, eg the type of engraving and/or the depth of the engraving.
  • the computer 5 is preferably connected to at least one actuating means (not shown) of the printing press, e.g. to a motor or an ink pump of the ink supply.
  • the computer 5 makes at least one setting on the printing press 1 on the basis of the ID that has been read.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Methods (AREA)
EP21200844.5A 2020-10-22 2021-10-05 Machine d'impression dotée d'un rouleau d'impression et d'un cylindre tramé ou d'un manchon tramé Pending EP3988310A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020213344 2020-10-22

Publications (1)

Publication Number Publication Date
EP3988310A1 true EP3988310A1 (fr) 2022-04-27

Family

ID=78078088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21200844.5A Pending EP3988310A1 (fr) 2020-10-22 2021-10-05 Machine d'impression dotée d'un rouleau d'impression et d'un cylindre tramé ou d'un manchon tramé

Country Status (4)

Country Link
US (1) US20220126568A1 (fr)
EP (1) EP3988310A1 (fr)
CN (1) CN114379217A (fr)
DE (1) DE102021125742A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202023105073U1 (de) 2023-09-05 2023-10-06 Kurt Zecher Gmbh Walze sowie Identifizierungssystem
CN117656646B (zh) * 2024-01-30 2024-04-19 江苏卫星新材料股份有限公司 一种接装纸柔版印刷装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050194087A1 (en) * 2004-01-27 2005-09-08 Erminio Rossini S.P.A. Printing member provided with identification means defined by or connectable to updateable means for recording data relative to the member and useful for its utilization
US20100011978A1 (en) * 2006-10-23 2010-01-21 Fischer & Krecke Gmbh & Co. Kg Rotary Printing Press and Method for Adjusting a Cylinder Thereof
US20170165956A1 (en) * 2014-02-05 2017-06-15 CONPRINTA GmbH & Co. KG Printing mechanism for a flexographic printing press and method for its operation
DE102020111341A1 (de) 2019-05-09 2020-11-12 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zum Vermessen von Erhebungen der Oberfläche eines Rotationskörpers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10050097A1 (de) * 2000-10-09 2002-06-20 Roland Man Druckmasch Gummizylinderhülse für Offsetdruckmaschinen
DE102007059507B4 (de) * 2007-12-11 2012-01-26 Fischer & Krecke Gmbh Druckmaschine mit Walzensensor
EP2100732A1 (fr) * 2008-03-13 2009-09-16 Fischer & Krecke GmbH Procédé et outil d'étalonnage pour étalonner une presse d'impression rotative
DE102008034248B4 (de) * 2008-07-23 2023-02-02 manroland sheetfed GmbH Verfahren zum Betreiben einer Druckmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050194087A1 (en) * 2004-01-27 2005-09-08 Erminio Rossini S.P.A. Printing member provided with identification means defined by or connectable to updateable means for recording data relative to the member and useful for its utilization
US20100011978A1 (en) * 2006-10-23 2010-01-21 Fischer & Krecke Gmbh & Co. Kg Rotary Printing Press and Method for Adjusting a Cylinder Thereof
US20170165956A1 (en) * 2014-02-05 2017-06-15 CONPRINTA GmbH & Co. KG Printing mechanism for a flexographic printing press and method for its operation
DE102020111341A1 (de) 2019-05-09 2020-11-12 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zum Vermessen von Erhebungen der Oberfläche eines Rotationskörpers

Also Published As

Publication number Publication date
DE102021125742A1 (de) 2022-04-28
CN114379217A (zh) 2022-04-22
US20220126568A1 (en) 2022-04-28

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