EP0609693A1 - Procédé et dispositif pour prévenir le dépôt milieu indésirable se présentant sous forme aérosol dans une machine d'impression rotative - Google Patents

Procédé et dispositif pour prévenir le dépôt milieu indésirable se présentant sous forme aérosol dans une machine d'impression rotative Download PDF

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Publication number
EP0609693A1
EP0609693A1 EP94100677A EP94100677A EP0609693A1 EP 0609693 A1 EP0609693 A1 EP 0609693A1 EP 94100677 A EP94100677 A EP 94100677A EP 94100677 A EP94100677 A EP 94100677A EP 0609693 A1 EP0609693 A1 EP 0609693A1
Authority
EP
European Patent Office
Prior art keywords
roller
aerosol
receptor
capturing
rollers
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
EP94100677A
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German (de)
English (en)
Other versions
EP0609693B1 (fr
Inventor
Martin Schoeps
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert AG
Koenig and Bauer 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 Koenig and Bauer Albert AG, Koenig and Bauer AG filed Critical Koenig and Bauer Albert AG
Publication of EP0609693A1 publication Critical patent/EP0609693A1/fr
Application granted granted Critical
Publication of EP0609693B1 publication Critical patent/EP0609693B1/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
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/30—Damping devices using spraying elements

Definitions

  • the invention relates to a method and a device for preventing precipitation of an undesired aerosol-like medium in a rotary printing press.
  • the invention has for its object to provide a method and an apparatus for preventing the precipitation of undesirable aerosol-like media on parts of a rotary printing press.
  • the invention has the following advantages in particular; By removing the unwanted moisture and / or color particles in volatile Form is recovered depending on the intended use of printing ink or dampening solution or cleaning liquid. This also removes undesired paint particles that cannot be transported immediately by the transfer rollers, so that at least the cross section of the spray cone emerging through the nozzle outlet opening is not impaired. Furthermore, by preventing the undesirable settling of very finely divided particles on machine parts, corrosion-resistant coatings on these machine parts can be dispensed with.
  • FIG. 1 shows a schematic side view of a device according to the invention, which consists of a transmission device or droplet generator device, generally designated 1, for a droplet-capable medium and a discharge device or aerosol trap device, generally designated 2, for a droplet-capable medium.
  • Both devices 1, 2 are housed together in a housing 3 which extends in the axial direction to two transfer rollers, which are designed as a receptor roller 4 and a smoothing roller 6 cooperating with it.
  • the receptor roller 4 is connected to a plate cylinder 8 via a further transfer roller 7.
  • the devices 1, 2 are arranged at an angle ⁇ , which can be in a range from three to 90 °.
  • the housing 3 is approximately U-shaped in cross section and is directed with its free edges 12, 13 against the outer surface of the smoothing roller 6 or the receptor roller 4.
  • the distance of the free edges 12, 13, against the rollers 6, 4 is minimal and can be in the range from 0.5 to 25 mm.
  • the generator device 1 preferably flat jet nozzles, of which only two nozzles 14, 16 are shown in FIG. 2.
  • the nozzles 14, 16 are form-fitting in a holding element 17, e.g. B. attached to an axially extending sheet metal strip.
  • the nozzles 14, 16 are each connected to a solenoid valve 18 which controls the supply of dampening solutions via an electrical connection 19.
  • the dampening solution is supplied via a connection 21 on the solenoid valve 18.
  • the upper free edge 12 of the housing 3 which is U-shaped in cross section and extends in the axial direction towards the rollers 4, 6 can be pivoted with its subsequent upper housing part 22 about a hinge 23, so that after the upper housing part 22 has been swung forward, only the holding element 17 with the nozzles 14, 16 remains, which is attached to a lower housing part 24.
  • the two devices 1, 2 are accommodated in the front part of the housing 3 which is open in the direction of the rollers 4, 6. Both devices 1, 2 are separated by a guide plate 26, which is arranged parallel to the housing parts 22, 24 and extends in the axial direction of the rollers 4, 6. An end 27 of the guide plate 26 which extends in the direction of the rollers 4, 6, with its edge 28 which extends in the axial direction to the rollers 4, 6, is short of the outer surface of the receptor roller 4 arranged.
  • the guide plate 26 is arranged to be adjustable in the direction B on the rollers 4, 6, so that a gap f located between the edge 28 (FIG. 3) of the guide plate 26 and the outer surface of the receptor roller 4 has a size of approximately between 0.5 to 25 mm is adjustable.
  • the guide plate 26 can be made in two parts and overlap one another, so that this can be moved in the direction of arrow B by means of indicated screws 31 and the elongated holes located on the upper part of the guide plate 26.
  • the guide plate 26 is held by supports 32, 33 arranged in a form-fitting manner on the lower housing part 24.
  • the supports 32, 33 are in the direction of movement C by means of a threaded spindle 34 and a handle attached thereto, for. B. a knurled nut 36 adjustable in height.
  • the guide plate 26 is simultaneously adjusted in this direction of movement C.
  • the guide plate 26 is angled at right angles in the direction of its second end 37 in the direction of the lower housing part 24 and extends to the lower housing part 24.
  • the height of the guide plate 26 can be adjusted in the C direction.
  • the baffle 26 is angled such that its second end 37 extends at a distance d from the parallel holding element 17, so that a channel 39 is formed for the discharge device, through which moisture or paint particles can be discharged.
  • a channel 39 is formed for the discharge device, through which moisture or paint particles can be discharged.
  • one or more discharge ports 41 are arranged on the lower housing part (24), which is connected via a cleaning or filter system (not shown).
  • the guide plate 26 has U-shaped recesses 42 in the vicinity of the nozzles 14, 16, through which the spray heads of the nozzles 14, 16 protrude through.
  • the devices 1, 2 are limited at the end by the side shields 43, 44, which are adapted to the contour of the rollers 4, 6.
  • the devices 1, 2 arranged in the housing 3 are arranged with respect to the rollers 4, 6 in such a way that a spray jet 46 from the nozzles 14, 16 is directed onto the outer surface of the receptor roller 4.
  • An opening 47 of the discharge device 2 directed in the direction of the rollers 4, 6 aims at a line of contact 55 between the receptor roller 4 and the smoothing roller 6 over its entire axial length.
  • the opening 47 has a clear width e seen in cross section.
  • the operation of the device is as follows: From the nozzles 14, 16 z. B. dampening solution applied to the clockwise rotating receptor roller 4 and transported further by this in the direction of the contact line 55, which is formed with the counterclockwise rotating smoothing roller 6.
  • the application of the dampening solution produces aerosols, that is to say volatile, mist-like particles, which are entrained in the direction of rotation of the receptor roller 4 by the air flow circulating around the receptor roller 4.
  • These particles emerging behind the edge 28 are discharged through the opening 47.
  • the edge 28 of the first end 27 of the guide plate 26 serves as a tear-off edge in terms of flow technology, so that the volatile aerosols are deflected behind the edge 28 and diverted away.
  • the Air flows of the smoothing roller 6 and the receptor roller 4 are deflected in the nip 48 due to physical conditions in the direction of the discharge device 2.
  • the volatile particles are thus discharged through the opening 47.
  • This also applies to the anti-clockwise smoothing roller 6, which partly recycles aerosols, which can now be removed in a controlled manner.
  • color particles are transferred back from the plate cylinder 8 via the transfer roller 7 to the receptor roller 4, which previously hovered uncontrollably in the transfer device 1 and could settle near the openings of the nozzles 14, 16. These color particles are now also suctioned off.
  • the edge 28 of the first end 27 of the guide plate 26 located in the vicinity of the receptor roller 4 minus a gap 29 can have different cross sections, e.g. B. be angled in the direction of the upper housing part 22 or the lower housing part 24, be sharp or rounded.
  • the edge 28 can also be provided with a bead which, viewed in cross section, is circular with a diameter which corresponds to two to four times the material density of the end 27 of the guide plate 26.
  • the edge 28 can also be designed at right angles with a simple material thickness, as shown in FIG. 7.
  • the device according to the invention makes it possible to apply cleaning agents to ink application rollers, ink rubbing cylinders, ink transfer rollers and blanket cylinders.
  • the device according to the invention can be used when applying ink to the rollers of an inking unit.
  • FIG. 4 shows a second exemplary embodiment of a device according to the invention.
  • a housing 3 only the transmission device 1 for droplet media, z. B. arranged in the form of a spray dampening system.
  • the housing 3 also consists of an upper and a lower housing part 22, 24, the upper housing part 22 being pivotable by means of a hinge 23.
  • a housing-fixed holder 17 for receiving the nozzle 16 with the associated solenoid valve 18 is angled below the upper housing part 22 and serves as a support for the upper articulated housing part 22.
  • a discharge device, generally designated 49, with a housing 50 is placed, which is arranged parallel to the transmission device 1. and, seen in cross section according to FIG.
  • the housing 50 of the discharge device 49 is non-positively and positively connected on the upper housing part 22 of the transmission device 1 by means of a symbolically indicated dovetail guide 54, so that the discharge device 49 can be moved in the direction of arrow B.
  • a cooling device 56 can be incorporated, by means of cooling coils indicated in cross section, or, as shown, can be applied on the outside of the housing 50, so that the discharged particles can condense.
  • the discharge device 49 is provided with a derivative 57 for the discharge, for. B. provided suction medium. Otherwise, the explanations of the first exemplary embodiment apply.
  • a discharge device 58 which consists of a trough 59 which is arranged on the upper housing part 22 and runs parallel to it and over which one or more cooling devices 61 are attached, to which the excess dripable medium condenses, drips into the tub 59 and is discharged via the discharge line 57. It is then also possible to replace the cooling device 61 with one designed as a cathode or anode Arrange electrode 62 in the form of a metal plate on which the droplet-capable medium settles, provided that a medium mixed with a positive or negative electrical charge, e.g. B. dampening solution by the transmission device 1, z. B. is applied via the nozzles 14, 16.
  • a medium mixed with a positive or negative electrical charge e.g. B. dampening solution by the transmission device 1, z. B.
  • a discharge device 63 is provided, which has an analogous function to the discharge device 49 shown in FIG. 4, but which is arranged completely separately from the transmission device 1 and with excess medium from an incoming roller gap 64 between the Receptor roller 4 and the transfer roller 7 is suctioned off.
  • the transmission device 1 is seen in the direction of rotation of the receptor roller 4 and is arranged in front of the nip 64. It would also be possible to arrange the discharge device 63 in a running nip 66 between the receptor roller 4 and the transfer roller 7.
  • a discharge device 67 is arranged on an upper housing part 22 of a device 1 which transfers dampening solution.
  • the discharge device 67 can, like the discharge device 49 according to FIG. 4 be carried out with the special feature that no smoothing roller 6 is arranged.
  • a discharge line 57 can be connected to a suction device.
  • the discharge devices 49, 58, 63, 67 are also trained as aerosol traps.
  • the stray aerosol can be captured using the aforementioned capture devices.
  • the aerosol can be re-formed into droplets by the cooling or condensing devices 56, 61, 62 mentioned and then removed.
  • the aerosol can also be removed without condensation.
  • the stray aerosols can consist of printing ink, dampening solution or a component of both.
  • the aerosol (mist) trap 2; 49; 58; 63; 67 is at a distance f from the circumference and in a position around the circumference of the receptor roller 4, seen in the direction of rotation of the receptor roller 4, before or after a line of contact 55 of the receptor roller 4 with an immediately next roller 6 interacting with it; 7 arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP94100677A 1993-01-25 1994-01-19 Dispositif pour capter aerosol vagabond dans une machine d'impression rotative Expired - Lifetime EP0609693B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4301950A DE4301950A1 (de) 1993-01-25 1993-01-25 Verfahren und Vorrichtung zum Verhindern eines Niederschlages eines unerwünschten aerosolartigen Mediums in einer Rotationsdruckmaschine
DE4301950 1993-01-25

Publications (2)

Publication Number Publication Date
EP0609693A1 true EP0609693A1 (fr) 1994-08-10
EP0609693B1 EP0609693B1 (fr) 1997-07-23

Family

ID=6478872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100677A Expired - Lifetime EP0609693B1 (fr) 1993-01-25 1994-01-19 Dispositif pour capter aerosol vagabond dans une machine d'impression rotative

Country Status (4)

Country Link
US (1) US5438923A (fr)
EP (1) EP0609693B1 (fr)
JP (1) JPH06255075A (fr)
DE (2) DE4301950A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1004436A1 (fr) * 1998-11-05 2000-05-31 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de recueil d'aérosols dans un système de mouillage par pulvérisation
DE102011075600A1 (de) * 2011-05-10 2012-11-15 Koenig & Bauer Aktiengesellschaft Feuchtwerk eines Offset-Druckwerks
DE102011075598A1 (de) * 2011-05-10 2012-11-15 Koenig & Bauer Aktiengesellschaft Feuchtwerk eines Offset-Druckwerks

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3080172B2 (ja) * 1994-07-09 2000-08-21 ケーニツヒ ウント バウエル−アルバート アクチエンゲゼルシヤフト スプレー式湿し装置
JP2689309B2 (ja) * 1994-09-30 1997-12-10 株式会社東京機械製作所 平版印刷機のダンプニング装置
US5575211A (en) * 1994-10-28 1996-11-19 Hycorr Machine Corporation Washing Arrangement for rotary printer
DE19642404C2 (de) * 1995-05-04 2000-08-17 Jimek Ab Arloev Sprühbenetzungsvorrichtung für eine Druckmaschine
DE19516068C2 (de) * 1995-05-04 2001-06-21 Heidelberger Druckmasch Ag Reinigungseinrichtung für Druckwerke von Rotationsdruckmaschinen
DE19526574C1 (de) * 1995-07-20 1996-10-17 Roland Man Druckmasch Verfahren und Vorrichtung zum Waschen eines Formzylinders und einer zugeordneten Auftragwalze in einer Druckmaschine
EP0876256B1 (fr) * 1996-01-24 2000-04-19 Koenig & Bauer Aktiengesellschaft Dispositif de mouillage par pulverisation
JP3215633B2 (ja) * 1996-08-21 2001-10-09 シャープ株式会社 画像記録装置
DE19859437A1 (de) * 1998-12-22 2000-06-29 Heidelberger Druckmasch Ag Farbwerk
IT1314474B1 (it) * 2000-01-28 2002-12-18 Perini Fabio Spa Dispositivo e metodo per la pulizia di una superficie di un cilindroruotante, come un cilindro cliche' di una macchina da stampa od altro
DE10202991A1 (de) * 2002-01-26 2003-07-31 Roland Man Druckmasch Oberfläche für ein Bauteil einer Druckmaschine
US7117788B2 (en) * 2004-02-27 2006-10-10 Goss International Americas, Inc. Spray device
US20050223926A1 (en) * 2004-04-08 2005-10-13 Michael Baeten Apparatus for cleaning a rotating cylinder
DE102006038798A1 (de) * 2006-07-31 2008-02-07 Heidelberger Druckmaschinen Ag Folientransferwerk mit Materialaufbringeinrichtung
JP5131947B2 (ja) * 2007-09-28 2013-01-30 日本ボールドウィン株式会社 スプレーダンプナ
DE102011075599B4 (de) * 2011-05-10 2014-10-23 Koenig & Bauer Aktiengesellschaft Feuchtwerk eines Offset-Druckwerks

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE622359C (de) * 1933-07-30 1935-12-17 Albert Schnellpressen Farbwerk fuer Druckmaschinen, insbesondere Rotationsdruckmaschinen
US2856848A (en) * 1955-05-05 1958-10-21 Harris Intertype Corp Means for dampening the surface of a rotating cylinder
US3093067A (en) * 1961-07-31 1963-06-11 Advanced Graphics Inc Humid air press plate conditioning apparatus for printing press
US3139028A (en) * 1962-04-03 1964-06-30 Advanced Graphics Inc Misting apparatus for treating printing plates
US4044674A (en) * 1974-07-24 1977-08-30 Smith R.P.M. Corporation Spray dampening system for high quality offset printing

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
GB392326A (en) * 1932-03-16 1933-05-18 Coop Wholesale Improvements in or relating to offset litho and letter-press printing machines
NL295152A (fr) * 1962-07-11
DE1761892A1 (de) * 1968-07-18 1971-09-09 Siemens Ag Vorrichtung zum Abscheiden der im Farbwerk eines Druckers hervorgerufenen Farbstoffaerosole
US4034670A (en) * 1975-03-24 1977-07-12 Rockwell International Corporation Dampening device for lithographic printing press
US4143596A (en) * 1977-05-04 1979-03-13 Ivett Robert W Lithographic press dampening system
GB1575686A (en) * 1977-07-01 1980-09-24 Gestetner Ltd Offset printing machine
DE3120983A1 (de) * 1980-05-28 1982-04-29 Dai Nippon Insatsu K.K., Tokyo Vorrichtung zum waschen des gummituchzylinders einer rotations-offsetpresse
JPS624948A (ja) * 1985-06-28 1987-01-10 Toyota Motor Corp 回転速度センサの異常判定装置
US4686902A (en) * 1986-10-31 1987-08-18 Precision Engineered Systems Inc. Automatic blanket wash system
DE4125012A1 (de) * 1991-07-27 1993-01-28 Koenig & Bauer Ag Einrichtung zum befeuchten von zylindern bei offsetrotationsdruckmaschinen
JPH0767800B2 (ja) * 1991-12-16 1995-07-26 ニッカ株式会社 印刷シリンダの洗浄装置
DE9216932U1 (de) * 1992-02-28 1993-02-18 Baldwin-Gegenheimer GmbH, 8900 Augsburg Reinigungsvorrichtung für einen Zylinder einer Rotationsdruckmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE622359C (de) * 1933-07-30 1935-12-17 Albert Schnellpressen Farbwerk fuer Druckmaschinen, insbesondere Rotationsdruckmaschinen
US2856848A (en) * 1955-05-05 1958-10-21 Harris Intertype Corp Means for dampening the surface of a rotating cylinder
US3093067A (en) * 1961-07-31 1963-06-11 Advanced Graphics Inc Humid air press plate conditioning apparatus for printing press
US3139028A (en) * 1962-04-03 1964-06-30 Advanced Graphics Inc Misting apparatus for treating printing plates
US4044674A (en) * 1974-07-24 1977-08-30 Smith R.P.M. Corporation Spray dampening system for high quality offset printing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1004436A1 (fr) * 1998-11-05 2000-05-31 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de recueil d'aérosols dans un système de mouillage par pulvérisation
DE102011075600A1 (de) * 2011-05-10 2012-11-15 Koenig & Bauer Aktiengesellschaft Feuchtwerk eines Offset-Druckwerks
DE102011075598A1 (de) * 2011-05-10 2012-11-15 Koenig & Bauer Aktiengesellschaft Feuchtwerk eines Offset-Druckwerks
DE102011075598B4 (de) * 2011-05-10 2013-11-07 Koenig & Bauer Aktiengesellschaft Feuchtwerk eines Offset-Druckwerks
DE102011075600B4 (de) * 2011-05-10 2014-02-20 Koenig & Bauer Aktiengesellschaft Feuchtwerk eines Offset-Druckwerks

Also Published As

Publication number Publication date
EP0609693B1 (fr) 1997-07-23
DE59403414D1 (de) 1997-08-28
JPH06255075A (ja) 1994-09-13
DE4301950A1 (de) 1994-07-28
US5438923A (en) 1995-08-08

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