EP0586958B1 - Einrichtung zum Vorfiltern des Feuchtwassers - Google Patents

Einrichtung zum Vorfiltern des Feuchtwassers Download PDF

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Publication number
EP0586958B1
EP0586958B1 EP93113461A EP93113461A EP0586958B1 EP 0586958 B1 EP0586958 B1 EP 0586958B1 EP 93113461 A EP93113461 A EP 93113461A EP 93113461 A EP93113461 A EP 93113461A EP 0586958 B1 EP0586958 B1 EP 0586958B1
Authority
EP
European Patent Office
Prior art keywords
printing unit
prefilter
door
unit according
damping
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 - Lifetime
Application number
EP93113461A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0586958A3 (OSRAM
EP0586958A2 (de
Inventor
Rudi Junghans
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 EP0586958A2 publication Critical patent/EP0586958A2/de
Publication of EP0586958A3 publication Critical patent/EP0586958A3/xx
Application granted granted Critical
Publication of EP0586958B1 publication Critical patent/EP0586958B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/32—Ducts, containers, or like supply devices for liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/30—Recovering used solvents or residues
    • B41P2235/31—Recovering used solvents or residues by filtering

Definitions

  • the invention relates to a device for prefiltering the fountain solution in a printing press with at least one printing unit.
  • a pre-filter device is provided, which is assigned to each printing unit of a printing press.
  • This pre-filter device is arranged in a separate housing, which is usually arranged outside the printing press.
  • Such separate apparatuses not only leave a negative impression visually, but also hinder working on the printing press.
  • the invention is based on the object of proposing a device which avoids these disadvantages of the prior art.
  • a further development of the device according to the invention provides that at least part of a housing wall of the prefilter housing is designed as a door. It is particularly advantageous that this door is also the door on the operating side of the printing unit. This construction ensures that the prefilter is easily accessible from the operator side, for example. It is easy to change the filter mats.
  • the frame of the prefilter housing be provided with elastic sealing material is provided.
  • this sealing material is foam.
  • a collecting container for the dampening water is located under the filter housing in which the pre-filter is arranged. This collecting container is dimensioned so that the dampening water collects here when the printing machine is switched off.
  • a further development of the device according to the invention provides channels in which the hoses for returning the dampening water run from a dampening unit to the prefilter housing.
  • the hoses do not hinder any further elements of the printing unit.
  • the channels are designed in such a way that there are no short bends or kinks in the hose guide. Since deposits are preferred at kinks, the smooth hose routing largely prevents contamination - and in extreme cases clogging of the hoses.
  • the top of the prefilter housing is designed as a trough. This pan is used to collect oil.
  • This combination of drip pan and prefilter housing is particularly simple and inexpensive.
  • a line leads the fountain solution from the pre-filters in the printing units to a main filter.
  • a main filter has become known, for example, from utility model DE-U1 91 01 888.
  • a device for displaying the dampening solution level is arranged in the prefilter.
  • the dampening solution level is checked using a float switch.
  • An increase in the dampening solution level is usually an indication that the filter has become clogged due to impurities and that there is a dampening solution accumulation in the area of the pre-filter. Since overflowing dampening solution can also be briefly cleaned by the main filter, it is sufficient for the float switch to activate a warning indicator. Since the main filter can temporarily take over the task of the pre-filter, the filter mats can be replaced while the printing machine is in operation.
  • Fig. 1 is a section through a printing unit 1 of a web-fed rotary printing press, not shown separately shown.
  • this printing unit 1 the device according to the invention for pre-filtering the fountain solution is integrated.
  • An upper dampening unit 2 and a lower dampening unit 3 are assigned to the pressure cylinders 17.
  • the return of the dampening water from the dampening units 2, 3 takes place via hoses 4, which are guided in channels 5.
  • the dampening water to be cleaned passes through the hoses 4 into a pre-filter 6 in which filter mats 8 are arranged.
  • the pre-filter 6 is arranged in the filter housing 7. This filter housing is closed by a door 12 on the operating side of the printing unit 1.
  • a collecting container 9 which is at least dimensioned such that it can hold the dampening water flowing out of the dampening units 2, 3 and the pre-filter 6 when the machine stops.
  • the collecting container 9 is connected to the main filter 19 via a collecting line 10.
  • a level indicator 20 for example a float switch, is arranged in the pre-filter 6 and activates a warning display when a certain level is exceeded.
  • Fig. 2 shows a longitudinal section through the device according to the invention for pre-filtering the fountain solution.
  • the device according to the invention is arranged in the lower region of the printing unit 1.
  • the dampening water is fed from the upper and lower dampening units 2, 3 into the prefilter 6 via hoses 4. These hoses 4 are guided in channels 5.
  • the prefilter 6, in which the filter mats 8 are arranged, is located in the filter housing 7. Below the prefilter 6, there is the collecting container 9. From this collecting container 9, the dampening solution is transferred via a Line 10 passed to the main filter 19, not shown.
  • the prefilter housing 7 is closed by a door 12.
  • This door 12 is also the door on the operating side of the printing unit 1.
  • the frame of the pre-filter housing 7, which serves to accommodate the door 12, is provided with elastic sealing material 13.
  • This elastic sealing material 13 is, for example, foam.
  • webs are additionally provided on the frame of the door, which are pressed into the sealing material when the door is closed. This results in an effective sealing of the areas that carry the dampening solution.
  • the top 15 of the prefilter housing 7 is advantageously designed as a trough 18.
  • the top 15 of the prefilter housing 7 is at the same time suitable for collecting oil from central lubrication escaping from bearings. Since the upper side 15 of the prefilter housing 7 thus fulfills a double function, this design is particularly cost-effective.
  • the oil is discharged from the trough 17 via an outlet connection 16.
  • Fig. 3 shows a cross section through the device according to the invention for prefiltering the fountain solution.
  • the prefilter 6 is arranged in the upper region of the filter housing 7;
  • the collecting container 9 is located in the lower area. Sealing material 13 and webs 14 engaging in this sealing material, which are located on the inside of the door 12, isolate the areas that carry the dampening solution.
  • dampening agent-carrying hoses 4 are guided through the side wall 11 of the printing unit 1 and then through channels 5, so that they do not impede any control elements of the printing unit 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Filtering Materials (AREA)
  • Water Treatment By Sorption (AREA)
EP93113461A 1992-09-02 1993-08-24 Einrichtung zum Vorfiltern des Feuchtwassers Expired - Lifetime EP0586958B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4229311A DE4229311C1 (de) 1992-09-02 1992-09-02 Vorrichtung zum Reinigen des Feuchtwassers
DE4229311 1992-09-02

Publications (3)

Publication Number Publication Date
EP0586958A2 EP0586958A2 (de) 1994-03-16
EP0586958A3 EP0586958A3 (OSRAM) 1994-08-03
EP0586958B1 true EP0586958B1 (de) 1996-10-23

Family

ID=6467062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93113461A Expired - Lifetime EP0586958B1 (de) 1992-09-02 1993-08-24 Einrichtung zum Vorfiltern des Feuchtwassers

Country Status (5)

Country Link
US (1) US5415091A (OSRAM)
EP (1) EP0586958B1 (OSRAM)
JP (1) JP2956816B2 (OSRAM)
AT (1) ATE144461T1 (OSRAM)
DE (2) DE4229311C1 (OSRAM)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9413438U1 (de) 1994-08-19 1995-06-22 Baldwin-Gegenheimer Gmbh, 86165 Augsburg Druckmaschinen-Temperierungssystem
US5839364A (en) * 1994-09-19 1998-11-24 Goss Graphic Systems, Inc. Dampening system for a printing press
DE19949906A1 (de) * 1999-10-16 2001-04-19 Baldwin Grafotec Gmbh Druckmaschinen-Reinigungsvorrichtung
US6293198B1 (en) * 2000-10-13 2001-09-25 S. T. Engineering Co., Ltd. Circulation treatment system and method for treating fountain solution
DE10163341C2 (de) * 2001-12-21 2003-12-11 Ludwig E Betz Gmbh Druckmaschi Vorrichtung und Verfahren zum Reinigen von verschmutztem Reinigungsmittel von Druckmaschinen
DE10213959A1 (de) * 2002-03-28 2003-10-09 Baldwin Germany Gmbh Feuchtwasserkreislaufabschnitt
US6908558B2 (en) * 2003-03-19 2005-06-21 David J. Stinson Fountain solution recycling system for commercial printers
DE102004021508B4 (de) * 2004-04-30 2007-04-19 Technotrans Ag Verfahren und Vorrichtung zur Reinigung des Feuchtmittels einer Druckmaschine
ITMI20041698A1 (it) * 2004-09-03 2004-12-03 Ecografica S R L Apparecchiatura e procedimento per ottimizare le caratteristiche dell'acqua di bagnatura nelle macchine per stampa offset
JP4908353B2 (ja) * 2007-09-04 2012-04-04 篤 新西 湿し水循環装置
US20150059059A1 (en) * 2013-09-04 2015-03-05 Gregg Teskey Mid length dress sock
CN104890350A (zh) * 2015-06-30 2015-09-09 云南华红印刷有限公司 胶印机水箱

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE905741C (de) * 1948-04-03 1954-03-04 Dick Co Ab Befeuchten der Druckform von Rotationsflachdruckmaschinen
US3288061A (en) * 1963-12-31 1966-11-29 Miehle Goss Dexter Inc Press inking arrangement
US3949668A (en) * 1974-10-17 1976-04-13 Smith R.P.M. Corporation Liquid feed for offset press dampening system
DE2745741B2 (de) * 1976-10-15 1981-04-16 Nikkei Shoji Co., Ltd., Tokyo Verfahren und Vorrichtung zur Regulierung des in nach dem lithographischen Verfahren arbeitenden Druckmaschinen verwendeten Feuchtwassers
US4574695A (en) * 1984-09-24 1986-03-11 Mirachem Corporation Ltee/Ltd. Press dampening roll fountain
US5109770A (en) * 1989-09-22 1992-05-05 Oxy-Dry Corporation Printing cylinder cleaning system
JP2504596Y2 (ja) * 1990-01-26 1996-07-10 富士写真フイルム株式会社 湿し水自動補充装置
DE9101888U1 (de) * 1990-07-04 1991-05-08 Technotrans Böhnensieker GmbH, 4414 Sassenberg Vorrichtung zur Bereitstellung von Prozesswasser für Druckmaschinen

Also Published As

Publication number Publication date
EP0586958A3 (OSRAM) 1994-08-03
ATE144461T1 (de) 1996-11-15
JP2956816B2 (ja) 1999-10-04
EP0586958A2 (de) 1994-03-16
DE4229311C1 (de) 1994-03-10
JPH06155701A (ja) 1994-06-03
DE59304273D1 (de) 1996-11-28
US5415091A (en) 1995-05-16

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