EP1795349A2 - Procédé de commande d'une machine d'impression - Google Patents

Procédé de commande d'une machine d'impression Download PDF

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Publication number
EP1795349A2
EP1795349A2 EP20060023702 EP06023702A EP1795349A2 EP 1795349 A2 EP1795349 A2 EP 1795349A2 EP 20060023702 EP20060023702 EP 20060023702 EP 06023702 A EP06023702 A EP 06023702A EP 1795349 A2 EP1795349 A2 EP 1795349A2
Authority
EP
European Patent Office
Prior art keywords
printing
paint
unit
flexographic
glue
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.)
Withdrawn
Application number
EP20060023702
Other languages
German (de)
English (en)
Inventor
Hans-Georg Dipl.-Ing. Eitel
Rainer Dipl.-Ing. Gebhardt
Jürgen Dipl.-Ing. Schölzig
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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1795349A2 publication Critical patent/EP1795349A2/fr
Withdrawn legal-status Critical Current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
    • B41F31/005—Ink viscosity control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/025—Ducts formed between two rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/30—Measuring or controlling the consumption of ink

Definitions

  • the invention relates to a method for operating a printing machine, in particular a sheet-fed printing press, according to the preamble of claim 1.
  • Printing machines are used to print on substrates, in the first place ink and / or paint is applied to a substrate.
  • printing presses which have a plurality of offset printing units, wherein in the area of each offset printing unit, a partial printing image in a special offset printing ink is applied to the printing substrate.
  • printing presses which in addition to the offset printing units or instead of the offset printing units include flexographic printing units and / or coating units and / or Gummierwerke, wherein in the or each coating unit a paint in the or each flexo printing unit a flexographic ink and In the or each gumming a glue or adhesive is applied to the substrate.
  • the present invention relates to a method for operating a printing press, which has at least one coating unit and / or at least one flexographic printing unit and / or at least one gumming unit.
  • the present invention proposes a method for operating a printing machine, which takes into account this increasing automation requirement.
  • the present invention is based on the problem of providing a novel method for operating a printing machine, in particular a sheet-fed printing press.
  • the level of the container of the or each coating unit and / or the or each flexographic printing unit and / or the or each gumming unit is detected during the printing operation. Furthermore, the number of copies printed in the printing machine is detected during the printing operation. From the detected fill level of the or each container and from the recorded number of printed copies, the amount of paint or flexographic printing ink or glue consumed during the printing operation in the respective coating unit or flexographic printing unit or gumming unit is determined.
  • the degree of automation of printing machines is increased, in particular when the above inline consumption measurement for paint or flexographic ink or glue is used to the level of the container of the or each coating unit and / or the or each flexographic printing unit and / or the or each gumming unit in which paint or flexographic ink or glue is kept ready to regulate.
  • the inline consumption measurement of paint or flexographic ink or glue can be used in a logistics system for automated logistics control.
  • an actual scoop volume of an anilox roller of the respective coating unit or of the respective flexographic printing unit or of the respective gumming unit is determined from the detected fill level of the or each container, from the recorded number of the printed copies and from a predetermined format of the printing material and with a predetermined Creation volume compared. Then, when the actual scoop volume is smaller than the predetermined scoop volume, in particular, a contamination of the corresponding anilox roller is concluded. Then, if the actual scoop volume is greater than the predetermined scoop volume, in particular a leak in the paint circuit or flexographic ink circulation or glue circuit is closed. Also, if the actual scoop volume is greater than the predetermined scoop volume, then it can be concluded that a wrong anilox roller is in use.
  • the container of the or each coating unit and / or the or each flexographic printing unit and / or the or each gumming unit paint or flexographic ink or glue from at least one reservoir of a conditioning device is supplied, wherein at least one parameter of the paint or the flexographic printing ink or the glue, in particular a temperature and / or a viscosity and / or a pH of the paint or the flexographic ink or glue, in particular in the corresponding storage container of the conditioning is detected during the printing operation.
  • Detected actual values of the or each parameter are compared with predefined setpoint values, wherein in the case of a deviation of the actual values from the corresponding setpoint values, the corresponding conditioning device is controlled or regulated in such a way that the actual values are approximated to the predefined setpoint values.
  • Fig. 1 shows schematically a representation of a sheet-fed printing machine 10, which has a feeder 11, six offset printing units 12, a offset printing units 12 downstream coating unit 13 and a downstream of the coating unit 13 boom 14.
  • Print sheets to be printed in the area of the sheet-fed printing machine 10 are held in the area of the feeder 11 in the form of a feeder pile and moved through the sheet-fed printing machine for printing in the direction of the arrow 15, with offset printing in the offset printing units 12 and coating in the coating unit 13 Sheet is applied.
  • printed signatures are discharged from the printing press 10 to form a release stack.
  • the coating unit 13 of the sheet-fed printing machine 10 has a Lackdosier Nur 16, which is shown enlarged in the dashed box framed in FIG. 1, and which serves to apply the paint on the sheet.
  • the Lackdosier listening 16 of the coating unit 13 has a container 17, in which paint is kept.
  • the paint held ready in the container 17 is fed via a feed line 18 to a chamber doctor blade 19, which transfers the paint to an unillustrated anilox roller of the paint metering device 16.
  • the paint which is transported via the supply line 18 in excess amount in the direction of the chambered doctor blade 19, is collected in the region of a chambered doctor blade 19 associated collecting tank 20 and returned via a return line 21 back into the container 17.
  • a pump 22 or 23 is integrated into both the supply line 18 and the return line 21 in order to remove the paint either from the container 17 in the direction of the chambered doctor blade 19 or from the collecting container 20 in the direction of the container 17 to promote.
  • the fill level of the container 17 of the paint metering device 16 and thus of the coating unit 13 is detected.
  • the level of the container 17 can also be indirectly detected by the fact that both in the flow line 18 and in the return line 21 each have a flow sensor 26 or 27 is integrated, with an interacting with the flow sensors 26 and 27 evaluation 28 by subtraction of the above the flow sensors 26 and 27 detected flow rates determined the used paint.
  • a pump 31 is integrated into the refill line 30, whereby the refill quantity supplied to the container 17 from the reservoir 29 can be determined by monitoring the running time and the rotational speed of the pump 31.
  • the indirect level measurement of the container 17 and thus consumption measurement of paint can also be done on the basis of pump characteristics, insbeosndere then, when used as pumps metering pumps with a defined volumetric stroke.
  • a sheet counter 32 is positioned, which provides a corresponding measurement of the control device 25 of the sheet-fed printing machine 10. From the detected level of the container 17 of the coating unit 13 and from the detected number of printed sheets, the amount of paint consumed per printing sheet during the printing operation in the coating unit 13 is determined. This value is determined in the control device 25 and automatically logged and optionally used to control or regulate other processes on the sheet-fed press 10.
  • the sheet counter can also be arranged at another position of the sheet-fed printing press. It is also possible to have several sheet counters whose counter readings are offset against one another. So it is e.g. it is possible for a first sheet counter to be associated with the delivery arm and a second sheet counter of a sheet transfer unit via which rejects sheets are discharged. The counter readings of these two sheet counter are then added to determine the total number of printed sheets.
  • control device 25 is determined from the detected level of the container 17 of the coating unit 13, from the recorded number of sheets printed in the sheetfed press and from a predetermined format of the sheet, an actual scoop volume of about the chambered doctor blade 19 filled with varnish anilox roll of the coating unit 13 wherein this actual scoop volume is compared with a given scoop volume of the anilox roller. Then, when the actual scooping volume is smaller than the predetermined scooping volume, it is particularly possible to close the scouring roller and cause it to be cleaned. Then, if the actual scoop volume is greater than the predetermined scoop volume, in particular to a leak in the paint circuit, such. B. on a leakage of a pump or a line of the paint circuit, closed. Also, if the actual scoop volume is greater than the predetermined scoop volume, then it can be concluded that a wrong anilox roller is in use.
  • an actual transfer amount of paint at cleavage points of the two- or three-roller system can be determined and compared with a predetermined transfer amount.
  • the above inline consumption measurement for the paint in the coating unit 13 can also be used to regulate the level of the container 17 of the coating unit 13 depending on a given print run height and the number of already printed sheet such that upon reaching the predetermined print run height of the container is empty or contains a minimized residual quantity. As a result, the cleaning of the same can be facilitated. Furthermore, paint is saved.
  • FIG. 2 shows an excerpt from a sheet-fed printing machine 33, FIG. 2 showing an offset printing unit 34, a first varnishing unit 35 connected downstream of the offset printing unit 34, two drying apparatuses 36 or 37 connected downstream of the first varnishing unit 35 and a drying device 36 and 37 downstream second coating unit 38 shows.
  • the second coating unit 38 is followed by a delivery arm 39, in the region of which printed sheets printed in the sheet-fed printing press are discharged from the same to form a delivery stack.
  • the two coating units 35 and 38 of the sheet printing machine 33 of the embodiment of FIG. 2 in turn have a Lackdosier sensible 40 and 41, wherein of the Lackdosier noiseen 40 and 41 in Fig. 2 only anilox rollers 42 and 43 are shown.
  • the co-ordinating with the anilox rollers 42 and 43 chamber doctor blade of the paint dosing and the container of the respective Lackdosier immunity, via which paint the respective chamber doctor blade is supplied, are not shown in Fig. 2.
  • FIG. 2 shows for both Lackwerke 35 and 38 a reservoir 44 and 45 of a conditioning device via which the Lackdosier sensibleen 40 and 41 of the coating units 35 and 38 can be supplied with paint.
  • a quantity of paint used for each printing sheet during the printing operation can be determined for each of the coating units 35 and 38, in the manner described with reference to FIG. To avoid unnecessary repetition, reference is made in this regard to the above statements regarding the exemplary embodiment of FIG. 1.
  • the reservoir 44 which cooperates with the Lackdosier Anlagen 40 of the coating unit 35, associated paint container 46, from which the reservoir 44 can be filled by means of a pump 47 with paint. It is within the meaning of the present invention, a paint container 46 removed and the reservoir 44 supplied amount of paint to capture and evaluate, so as. B. to replace a deflated paint container 46 by a new paint container 46.
  • a temperature measurement and a viscosity measurement as well as a ph value measurement of the lacquer held in the storage container 45 are carried out for the lacquer held in the storage container 45, corresponding measured values of a control device 48 of the sheet-fed printing machine 33 being provided.
  • the detected actual values are compared with predefined setpoint values, wherein in the case of a deviation of the actual values from the corresponding setpoint values, the corresponding conditioning devices are controlled or regulated such that the actual values are approximated to the predetermined setpoint values.
  • the temperature of the paint is preferably carried out in the reservoir. Alternatively or additionally, the temperature of the paint can also be carried out via a continuous flow heat exchanger integrated into the pipe system.
  • the heating power of e.g. in the region of the boom 39 positioned drying devices 51 are controlled or regulated to automatically adjust the heating power of the drying devices to the temperature of the paint.
  • the heating power of the drying devices 36 and 37 can be adjusted, depending on the temperature of the prepared in the reservoir 44 paint.
  • the temperature of the paint can be measured at different positions within the conditioner or the printing press. So it is e.g. possible to detect the temperature of the paint immediately after the application of the paint on the sheets in the area of the printed sheets by a pyrometric measurement. It is also possible to detect the temperature of the paint in the area of the paint dosing device 41 of the coating unit 38, namely in the area of a chamber doctor blade or an anilox roller.
  • the viscosity of the paint stored in the reservoir 45 is measured and the viscosity of the actual value of the viscosity deviates from the corresponding desired value, the viscosity of the paint can be adjusted in the sense of the present invention by adding additives to the paint become.
  • FIG. 2 shows that the reservoir 45 is assigned a container 52 for an additive which, depending on the viscosity measurement, can be admixed with the paint present in the reservoir 45.
  • the regulation of the viscosity by the addition of additives to the lacquer is preferably carried out in the case of dispersion lacquers, water preferably being added as an additive to the lacquer.
  • the above admixture can be controlled by the injector principle or by means of metering directly into the paint circuit, with small Zudosiermengen provided a short mixing distance may be sufficient.
  • the ph value of the paint stored in the reservoir 45 is measured and it is determined, when compared with a predetermined set value for the ph value, that the actual value of the ph value deviates from the corresponding desired value, then in the sense of the present invention by addition of additives to the paint the ph value of the same can be adjusted.
  • the same water and / or ammonia can be added to keep the pH value of dispersion varnishes constant. As a result, the paint application can be stabilized on the sheet.
  • non-illustrated paint filter can be integrated, which can be detected by an automated pressure flow measurement and / or differential pressure measurement of the paint filters soiling the same. The paint filters can then be replaced or cleaned in time to prevent them from blocking.
  • control device 48 of the sheet-fed printing machine 33 is coupled via an interface 53 to a superordinate control system 54 in which logistic functions as well as production logging functions or data logging functions can be carried out automatically on the basis of the data recorded in the sense of the method according to the invention.
  • material balances for printers can be automated. Reordering of e.g. Lacquers or lacquer containers can be automated, possibly with automatic transmission of the data to a supplier or to a manufacturer of the lacquers. Also, disposal processes for e.g. Rinsing agent or automatically controlled or regulated for excess and to be disposed paint. Due to the inventive, continuous inline consumption measurement of paint for all participating in the printing coating units warning messages can be automatically generated when one or more of the coating unit is below a permissible minimum paint amount. Optionally, the printing press can then be automatically stopped or stopped.
  • printouts of the acquired data can be automatically made, e.g. Automated process documentation for an end customer.
  • the data can also be automatically stored on data carriers or automatically transmitted remotely.
  • All of the above-mentioned data acquisitions, data evaluations and / or data storages take place in interaction with a printing machine control device of the printing press, in particular via a machine control station of the printing press and external units or assemblies involved in the control of the printing press, which are coupled via interfaces to the machine control station or the printing machine control device ,
  • the method according to the invention described with reference to FIGS. 1 and 2 for coating units of a sheet-fed printing machine can also be used on flexographic printing units and gumming units of a sheet-fed printing machine. It is likewise possible to use the method according to the invention when varnishing units or flexo printing units or gumming units of a sheet-fed printing press are cleaned. In this case, a material balance can be created automatically for rinsing agents directed by the coating unit or flexographic printing unit or gumming unit in order to automatically log corresponding material balances and make them available for further processes.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Methods (AREA)
EP20060023702 2005-12-08 2006-11-15 Procédé de commande d'une machine d'impression Withdrawn EP1795349A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10558768 2005-12-08

Publications (1)

Publication Number Publication Date
EP1795349A2 true EP1795349A2 (fr) 2007-06-13

Family

ID=37836655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060023702 Withdrawn EP1795349A2 (fr) 2005-12-08 2006-11-15 Procédé de commande d'une machine d'impression

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EP (1) EP1795349A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007004472A1 (de) * 2007-01-30 2008-07-31 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung zur Ermittlung des Füllgrades von Medienbehältern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007004472A1 (de) * 2007-01-30 2008-07-31 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung zur Ermittlung des Füllgrades von Medienbehältern

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