EP0388664A2 - Dispositif pour nettoyer un cylindre d'imprimerie - Google Patents

Dispositif pour nettoyer un cylindre d'imprimerie Download PDF

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Publication number
EP0388664A2
EP0388664A2 EP90103653A EP90103653A EP0388664A2 EP 0388664 A2 EP0388664 A2 EP 0388664A2 EP 90103653 A EP90103653 A EP 90103653A EP 90103653 A EP90103653 A EP 90103653A EP 0388664 A2 EP0388664 A2 EP 0388664A2
Authority
EP
European Patent Office
Prior art keywords
roller
washing device
blanket cylinder
bristles
brush 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.)
Granted
Application number
EP90103653A
Other languages
German (de)
English (en)
Other versions
EP0388664A3 (fr
EP0388664B1 (fr
Inventor
Hans-Georg Jahn
Hermann Beisel
Karl-Heinz Seefried
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
Priority to AT90103653T priority Critical patent/ATE92844T1/de
Publication of EP0388664A2 publication Critical patent/EP0388664A2/fr
Publication of EP0388664A3 publication Critical patent/EP0388664A3/fr
Application granted granted Critical
Publication of EP0388664B1 publication Critical patent/EP0388664B1/fr
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
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/06—Cleaning arrangements or devices for offset cylinders
    • 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
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/23—Brushes

Definitions

  • the invention relates to a washing device for cleaning a cylinder of a printing press according to the preamble of claim 1.
  • washing devices are used for reasons of good print quality.
  • a washing device of a blanket cylinder of an offset printing press which has two closely arranged brush rollers that are in direct contact with the blanket cylinder, the washing liquid being fed through the hollow axes of the rollers and through bores arranged around the circumference of the axes.
  • a plurality of wires, which represent the deflection element, are provided on the mutually opposite lateral surfaces of the brush rollers. Through the wires forming the deflection element, the dirt and washing liquid particles thrown off at the respective contact point with the rubber blanket cylinder are to be thrown towards the respectively adjacent brush roller. This means that corresponding dirt particles get from one brush roller to the other and therefore still have to be removed. Then, the supply of the washing liquid through the axes of the brush roller, in addition to a considerable washing liquid requirement, results in increased construction costs, with regard to appropriate seals, etc.
  • the invention is therefore based on the object of designing a washing device of the type in question of simple construction in such a way that there is an increased washing effect with low washing liquid consumption.
  • the deflecting element is designed as a distributor tube lying in the range of rotation of the bristles of the brush roller, so that it fulfills a double function: on the one hand, it serves to deflect the bristles, whereby a mechanical cleaning effect is achieved by moving the bristles along the deflecting element and a subsequent resilient return movement of the bristles .
  • the distributor pipe also serves to supply the washing liquid through the outlet openings, which are oriented radially to the brush axis. Since the distributor pipe does not rotate with the brush roller, as in the prior art, the structural measures for sealing can be kept low.
  • the washing liquid emerges directly at the location of the mechanical cleaning of the bristles themselves.
  • the washing liquid After the washing liquid has left the outlet openings, it initially flows in the direction of the brush axis and thereby wets the bristles to which the ink and paper residues removed from the blanket cylinder adhere.
  • the rotating brush roller then reverses the direction of flow of the washing liquid which has reached the bristles by centrifugal force.
  • the bristles must pass through the distributor pipe in their rotating area with deflection. This leads to the fact that the bristles bend due to their internal elasticity and perform a stripping movement along the distributor pipe so that any contaminants present on the bristles in this case Towards the end of the bristles.
  • the distributor pipe is arranged in such a way that the spun off particles of impurities are not directed in the direction of the blanket cylinder, but rather as intended into a collecting trough underneath the washing device.
  • the arrangement of the distributor pipe about 45 ° before the lowest point of the brush axis has proven to be a favorable solution.
  • Feeding the distributor pipe via a storage container arranged above the same leads to an overall technically simple configuration.
  • Corresponding, separately driven feed pumps can accordingly be dispensed with. It is such an arrangement of the container and dimensioning of the outlet openings that a wash liquid jet is formed there, which is directed in the direction of the axis of the brush roller. The cleaning effect accordingly extends over a larger area of the bristles.
  • the arrangement of the brush roller relative to the blanket cylinder is such that the brush roller axis runs below the axis of the blanket cylinder.
  • This measure creates a favorable prerequisite for arranging the brush roller - seen in the direction of rotation of the blanket cylinder - a rubber roller rolling on the blanket cylinder in order to accelerate the washing process of the blanket roller.
  • a squeegee roller rolling on the rubber roller then occurs as an accelerator.
  • the latter interacts with a squeegee to mechanically wipe off dirt by largely removing the ink and paper particles from the rubber roller to the squeegee roller.
  • the cleaning effect is enhanced by the measure of bringing the rubber roller arranged above the brush roller into contact with the rubber blanket cylinder, the brush roller and the doctor roller.
  • a closed roller arrangement with optimal cleaning effect is achieved in that the doctor roller is in contact with the brush roller. There is therefore a mutual influence that is aimed at accelerating the removal of existing contaminants and passing them into the sump.
  • the washing device designated as a whole by the number 1 is assigned to a blanket cylinder 2 which is illustrated in sections and can be driven in the direction of the arrow x.
  • a An essential part of the washing device 1 is a rotatably driven brush roller 4 with bristles 3. Its axis 5 extends below the axis 6 of the blanket cylinder 2.
  • the connecting line 7 passing through both axes 5, 6 closes an angle ⁇ of approximately 20 ° to the horizontal a.
  • a rubber roller 9 rolling on the rubber blanket cylinder 2 or its outer surface 8.
  • the rubber roller 9 illustrated with a full line in FIG. 1 contacts the brush roller 4 in addition to the blanket cylinder 2.
  • a doctor roller 10 rolls on the rubber roller 9. The latter is in turn in contact with the brush roller 4.
  • the diameter of the doctor roller 10 and the rubber roller 9 are smaller than the diameter of the brush roller 4 formed by the bristle tips.
  • the rubber roller axis 11 is arranged above the axis 6 of the blanket cylinder 2.
  • the doctor roller 10 works together with a doctor 12 for mechanical stripping of contaminants.
  • the latter reach the outer surface of the doctor roller 10 via the rubber roller 9 and the brush roller 4 and are then stripped by the doctor blade 12.
  • the latter extends over the entire length of the doctor roller 10, the length of which corresponds to that of the other rollers.
  • the doctor blade 12 is supported by a spring element 13, which is seated on an adjusting device 14.
  • the entire washing device 1 is undertaken by a sump 15 for washing liquid.
  • the latter passes out of a storage container 16 under atmospheric pressure via an inlet pipe 17 to a distributor pipe 18 formed deflector.
  • the distributor pipe 18 is arranged in the direction of rotation in front of the lowest point 19 of the rotary region covered by the bristles, specifically at an angle alpha of approximately 45 ° in front of the lowest point 19.
  • the distributor pipe 18 is provided with outlet openings 20 directed radially to the brush axis 5.
  • the hole spacing of the outlet openings is approximately 10 mm, so that the brush roller is uniformly wetted through the outlet openings 20.
  • the distributor pipe 18 is fixed by means of a holder 21, so that the distributor pipe 18 remains in its intended position during cleaning.
  • a corresponding liquid level of the storage container 16 above the distributor pipe 18 and coordinated dimensioning of the outlet openings 20 form a wash liquid jet 22 directed in the direction of the axis 5 of the brush roller 4.
  • the rubber roller 9 causes the contaminants, such as ink and paper residues, on the outer surface 8 of the blanket cylinder 2 to dissolve.
  • the rubber roller 9 can be wetted independently of the brush roller 4.
  • the impurities adhering to the outer surface of the rubber roller 5 partly reach the doctor roller 10 and are removed from there by the doctor 12.
  • the bristles 3 remove corresponding impurities from the outer surface of the rubber roller 5 and partially carry them to the doctor roller 10.
  • the brush roller 4, which is driven counter to the direction of rotation x of the blanket cylinder 2, carries out a traversing movement of 4 to 5 mm.
  • a section of a bristle 3 in its various positions illustrates which movements a bristle 3 executes when it passes through the distributor pipe.
  • the bristle 3 illustrated in full lines in FIG. 2 shows it in the position in which it steps against the circumference of the distributor pipe 18.
  • the entire washing device 1 After cleaning the blanket cylinder 2 or its outer surface 8, the entire washing device 1 is deactivated.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP90103653A 1989-03-24 1990-02-26 Dispositif pour nettoyer un cylindre d'imprimerie Expired - Lifetime EP0388664B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90103653T ATE92844T1 (de) 1989-03-24 1990-02-26 Wascheinrichtung zur reinigung eines zylinders einer druckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3909819 1989-03-24
DE3909819A DE3909819A1 (de) 1989-03-24 1989-03-24 Wascheinrichtung zur reinigung eines zylinders einer druckmaschine

Publications (3)

Publication Number Publication Date
EP0388664A2 true EP0388664A2 (fr) 1990-09-26
EP0388664A3 EP0388664A3 (fr) 1991-05-02
EP0388664B1 EP0388664B1 (fr) 1993-08-11

Family

ID=6377176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103653A Expired - Lifetime EP0388664B1 (fr) 1989-03-24 1990-02-26 Dispositif pour nettoyer un cylindre d'imprimerie

Country Status (5)

Country Link
US (1) US5035178A (fr)
EP (1) EP0388664B1 (fr)
JP (1) JPH0722993B2 (fr)
AT (1) ATE92844T1 (fr)
DE (2) DE3909819A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1859938A3 (fr) * 2006-05-22 2008-01-16 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif destiné au nettoyage d'un cylindre d'une presse

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05162295A (ja) * 1991-11-20 1993-06-29 Baldwin Printing Controls Ltd 印刷機のシリンダ洗浄装置
US5257578A (en) * 1993-01-12 1993-11-02 Heidelberger Druckmaschinen Ag Device for automatically cleaning blanket cylinders in a offset printing press
JP2546621B2 (ja) * 1993-02-12 1996-10-23 ロックウェル インターナショナル コーポレイション 残りインクリサイクル装置付き印刷機
DE9403228U1 (de) * 1994-02-26 1994-04-21 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Wascheinrichtung zum Waschen der Mantelfläche eines Zylinders einer Druckmaschine
DE4416127C2 (de) * 1994-05-06 2000-11-30 Heidelberger Druckmasch Ag Reinigungsvorrichtung für Zylinder einer Druckmaschine
DE4426079A1 (de) * 1994-07-22 1996-01-25 Baldwin Gegenheimer Gmbh Gerät zur Reinigung von Walzen
US5575211A (en) * 1994-10-28 1996-11-19 Hycorr Machine Corporation Washing Arrangement for rotary printer
DE19702082B4 (de) * 1997-01-22 2005-10-13 Heidelberger Druckmaschinen Ag Wascheinrichtung im Druckwerk von Rotationsdruckmaschinen
US5893012A (en) * 1998-02-17 1999-04-06 Imation Corp. Apparatus and method for removal of back-plated developer
US20020157205A1 (en) * 2001-04-27 2002-10-31 Akira Hara Cylinder cleaning brush unit
US20040173240A1 (en) * 2002-09-13 2004-09-09 Paul Harris Brush for a blanket wash system
JP2005001243A (ja) * 2003-06-12 2005-01-06 Baldwin Japan Ltd シリンダ洗浄用洗浄液供給装置およびシリンダ洗浄用ブラシユニットおよびシリンダ洗浄装置
DE102006036710A1 (de) * 2006-08-05 2008-02-07 Sms Demag Ag Vorrichtung zur Anstellung einer Bürste an einer Rolle
JP4957958B2 (ja) * 2006-12-21 2012-06-20 独立行政法人 国立印刷局 ブランケットシリンダ除塵装置
CN103991273A (zh) * 2014-05-28 2014-08-20 太仓市鑫鹤印刷包装有限公司 一种新型纸管印刷机结构
CN106733731B (zh) * 2017-03-09 2023-09-08 合肥美亚光电技术股份有限公司 一种色选机的背景装置
CN110143052B (zh) * 2019-06-14 2020-02-14 温州市泰昌胶粘制品有限公司 一种不干胶制品印刷方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE314053C (fr) * 1900-01-01
DE315570C (fr) * 1900-01-01
US1082409A (en) * 1911-05-23 1913-12-23 Cottrell C B & Sons Co Offset mechanism for printing-machines.
US2705455A (en) * 1950-05-31 1955-04-05 Schnellpressenfab Heidelberg Means for cleaning the inking roller system of platen type printing presses
US2952859A (en) * 1958-03-19 1960-09-20 John H Alcamo Surgeons' pre-operating scrubbing machine
DE1124974B (de) * 1960-11-19 1962-03-08 Roland Offsetmaschf Reinigungsvorrichtung fuer den Gummizylinder von Offsetdruckmaschinen
FR2010455A1 (fr) * 1969-01-27 1970-02-20 Arnaud Jacques
US4015307A (en) * 1969-08-25 1977-04-05 Oxy-Dry Sprayer Corporation Apparatus for cleaning rotating cylindrical surfaces
US3809105A (en) * 1972-01-05 1974-05-07 Hoechst Co American Apparatus for processing two sides of a printing plate
DE3614496A1 (de) * 1986-04-29 1987-11-05 Heidelberger Druckmasch Ag Waschvorrichtung fuer druckzylinder von druckmaschinen
DE3806609C2 (de) * 1987-03-28 1996-10-17 Heidelberger Druckmasch Ag Waschvorrichtung zum Waschen der Mantelfläche eines Gummituchzylinders einer Offset-Druckmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1859938A3 (fr) * 2006-05-22 2008-01-16 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif destiné au nettoyage d'un cylindre d'une presse

Also Published As

Publication number Publication date
ATE92844T1 (de) 1993-08-15
JPH0722993B2 (ja) 1995-03-15
EP0388664A3 (fr) 1991-05-02
DE59002241D1 (de) 1993-09-16
JPH02279340A (ja) 1990-11-15
DE3909819A1 (de) 1990-09-27
DE3909819C2 (fr) 1992-07-30
EP0388664B1 (fr) 1993-08-11
US5035178A (en) 1991-07-30

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