EP1356933A1 - Druckmaschine mit Trocknungsstation - Google Patents

Druckmaschine mit Trocknungsstation Download PDF

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Publication number
EP1356933A1
EP1356933A1 EP02009128A EP02009128A EP1356933A1 EP 1356933 A1 EP1356933 A1 EP 1356933A1 EP 02009128 A EP02009128 A EP 02009128A EP 02009128 A EP02009128 A EP 02009128A EP 1356933 A1 EP1356933 A1 EP 1356933A1
Authority
EP
European Patent Office
Prior art keywords
printing
drying
drying station
printing machine
tempering
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Withdrawn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
EP02009128A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wilfried Dr. Kolbe
Klaus Schirrich
Bodo Steinmeier
Michael Schmitt
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.)
Fischer and Krecke GmbH and Co KG
Original Assignee
Fischer and Krecke GmbH and Co KG
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 Fischer and Krecke GmbH and Co KG filed Critical Fischer and Krecke GmbH and Co KG
Priority to EP02009128A priority Critical patent/EP1356933A1/de
Priority to US10/390,197 priority patent/US20030196347A1/en
Priority to JP2003116959A priority patent/JP2003311925A/ja
Publication of EP1356933A1 publication Critical patent/EP1356933A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B41F23/0483—Drying combined with cooling

Definitions

  • the invention relates to a printing machine with a plurality of rows arranged and traversed by a printing material printing units, which in each case a drying station is arranged downstream.
  • each drying station has a largely closed housing on, in which the freshly printed web is blown with hot drying air is, while it runs sequentially on several guide rollers, the printing material web support at the back.
  • the drying station has a sufficiently large length alselseln and / or a sufficiently high drying temperature must be selected become.
  • there are limits to increasing the drying temperature because most substrates tend to heat up when heated Longitudinal direction as well as in the transverse direction depending on the material more or less strongly shrink, so that it can lead to registration errors, if the individual Color separations are printed one above the other.
  • Another disadvantage of Conventional drying stations consists of a machine in a row construction in that the individual guide rollers, the substrate web only support linear, while the spaces between the individual Guide rollers are freely spanned by the substrate web. By the Blowing with drying air can therefore result in a considerable mechanical Stress on the substrate web and fluttering and possibly a shift of the printing material come.
  • the object of the invention is to provide a printing machine of the type mentioned to create an efficient and yet gentle drying of the printing substrate allows.
  • This object is achieved in that the drying stations each on the circumference of a single, the substrate web supporting Tempering are arranged.
  • the printing material in the drying station on a larger Circumferential angle of the tempering is supported flat, when blowing with drying air or another drying medium fluttering of the printing material web as well as a relocation of the same are largely avoided, and also the mechanical stress of the printing material web becomes significant reduced.
  • Another significant advantage of the invention is that due to the flat contact of the printing substrate on the tempering a considerable proportion of the heat of drying over the back of the printing material web can be dissipated. In the printing substrate so a temperature gradient in the sense that the temperature of the printing material from the printed and blown with drying air and / or infrared radiation or UV radiation irradiated side to the back decreases.
  • drying stations structurally simplified, since they instead of multiple guide rollers need show only a single tempering, so that the number the required bearing and possibly drive devices is reduced.
  • the drying station both blowing nozzles for a hot drying medium and infrared or UV emitters or a combination of tuyeres and emitters have.
  • the tempering roller preferably has a jacket with high thermal conductivity on, over which the heat of drying can be dissipated effectively.
  • the tempering roll has a cooling jacket, whose temperature is thermostatically controlled.
  • the cooling jacket can a system of cooling chambers comprising a liquid cooling medium, For example, water, to be flowed through.
  • FIG. 1 shows a part of a flexographic printing machine in a row construction with several Printing units 10, which successively pass through a printing material web 12 become.
  • Each printing unit 10 comprises a chamber doctor blade 14, an anilox roller 16, a printing cylinder 18, an impression cylinder 20 and a Drying station 22 and a plurality of guide rollers 24 for the printing substrate.
  • the anilox roller 18 has a fine cell pattern on its surface and is inked during passage through the chambered doctor blade 14 with ink. Of the Printing cylinder 18 rolls on the anilox roller 16, so that the printing parts the clichés take over the ink from the anilox roller 16.
  • the printing material web 12 is printed when passing through a gap between the impression cylinder 18 and the impression cylinder 20 runs, and then enters the associated Drying station 22, in which the freshly applied ink dried is before the printing material on the guide rollers 24 to the next Printer is forwarded.
  • the drying station 22 is arranged on the circumference of a tempering roller 26 and extends over a larger circumferential angle of the tempering roller 26, in the example shown over a circumferential angle of about 45 °, on which the printing substrate 12 flat against the peripheral surface of the tempering roller 26 abuts.
  • the drying station 22 has a housing 28, which follows the surface curvature of the tempering roller 26 and the tempering is open.
  • This housing 28 receives a plurality of blowing nozzles 30, from where the surface of the voltage applied to the tempering roller 26 printing material with a hot drying medium, for example blown with hot air becomes.
  • the housing 28 also contains several more Spotlight 32, z. B. infrared radiators with which the surface temperature of the Substrate web and thus the drying effect can be increased.
  • the tempering roller 26 has a cooling jacket 34, the more evenly on the peripheral surface of the tempering roller distributed cooling chambers 36 forms, the to be flowed through by a cooling medium, for example by water.
  • the Cooling chambers 36 are via a conduit system 38 and over at one or both Ends of the tempering arranged rotary unions 40 with a Circulation system 42 connected to the cooling medium.
  • the outer peripheral wall of the cooling jacket 34 at which the printing material in the drying station 22 is applied, consists of a material with high thermal conductivity.
  • These peripheral wall are preferably at several on the circumference and in Axially distributed points embedded temperature sensor 44, which measured the Report temperature of the cooling jacket 34 to the circulation system 42, so that the temperature of the cooling jacket can be thermostatically controlled. instead the temperature sensor 44 may optionally be provided also a sensor, the the return temperature of the cooling medium measures.
  • the cooling medium circulated in the cooling jacket 34 can not only be used for cooling be used, but for example, to the tempering 26th preheat to a suitable operating temperature before printing begins, so that in the drying station 22 from the beginning optimal temperature conditions to rule.
  • the dissipated with the cooling medium heat can with Using a heat exchanger system for preheating the drying air used so that an energy-saving drying of the printing material allows becomes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Methods (AREA)
EP02009128A 2002-04-23 2002-04-23 Druckmaschine mit Trocknungsstation Withdrawn EP1356933A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02009128A EP1356933A1 (de) 2002-04-23 2002-04-23 Druckmaschine mit Trocknungsstation
US10/390,197 US20030196347A1 (en) 2002-04-23 2003-03-17 Printing machine with drying station
JP2003116959A JP2003311925A (ja) 2002-04-23 2003-04-22 乾燥ステーションを備えた印刷機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02009128A EP1356933A1 (de) 2002-04-23 2002-04-23 Druckmaschine mit Trocknungsstation

Publications (1)

Publication Number Publication Date
EP1356933A1 true EP1356933A1 (de) 2003-10-29

Family

ID=28685895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009128A Withdrawn EP1356933A1 (de) 2002-04-23 2002-04-23 Druckmaschine mit Trocknungsstation

Country Status (3)

Country Link
US (1) US20030196347A1 (ja)
EP (1) EP1356933A1 (ja)
JP (1) JP2003311925A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2774766A1 (en) * 2013-03-07 2014-09-10 Ricoh Company, Ltd. Drum temperature control for a radiant dryer of a printing system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3119608A1 (en) * 2014-03-21 2017-01-25 Bobst Firenze S.r.l. Method and device for the control and the management of the printing parameters of a flexographic printing machine
EP3988304A1 (de) * 2020-10-22 2022-04-27 Heidelberger Druckmaschinen AG Druckmaschine mit zwillingsdruckwerk und verfahren zum betreiben einer solchen druckmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB744343A (en) * 1952-11-04 1956-02-01 Svenska Vaxduks Aktiebolaget Improved apparatus for treating webs of thermoplastic material
EP0589260A1 (de) * 1992-09-07 1994-03-30 BHS Druck- und Veredelungstechnik GmbH Druckmaschine
WO1996034700A1 (de) * 1995-05-04 1996-11-07 Nölle Gmbh Verfahren und vorrichtung zum härten einer schicht auf einem substrat
US5634402A (en) * 1995-10-12 1997-06-03 Research, Incorporated Coating heater system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE423118B (sv) * 1978-03-31 1982-04-13 Karlstad Mekaniska Ab Forfarande och anordning for konsolodering och torkning av en fuktig poros bana
SE512944C2 (sv) * 1998-10-01 2000-06-12 Sca Research Ab Metod att framställa papper med ett tredimensionellt mönster

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB744343A (en) * 1952-11-04 1956-02-01 Svenska Vaxduks Aktiebolaget Improved apparatus for treating webs of thermoplastic material
EP0589260A1 (de) * 1992-09-07 1994-03-30 BHS Druck- und Veredelungstechnik GmbH Druckmaschine
WO1996034700A1 (de) * 1995-05-04 1996-11-07 Nölle Gmbh Verfahren und vorrichtung zum härten einer schicht auf einem substrat
US5634402A (en) * 1995-10-12 1997-06-03 Research, Incorporated Coating heater system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2774766A1 (en) * 2013-03-07 2014-09-10 Ricoh Company, Ltd. Drum temperature control for a radiant dryer of a printing system
US9605898B2 (en) 2013-03-07 2017-03-28 Ricoh Company, Ltd. Drum temperature control for a radiant dryer of a printing system

Also Published As

Publication number Publication date
JP2003311925A (ja) 2003-11-06
US20030196347A1 (en) 2003-10-23

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