EP0956949A2 - Dispositif de mouillage par pulverisation - Google Patents

Dispositif de mouillage par pulverisation Download PDF

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Publication number
EP0956949A2
EP0956949A2 EP99108946A EP99108946A EP0956949A2 EP 0956949 A2 EP0956949 A2 EP 0956949A2 EP 99108946 A EP99108946 A EP 99108946A EP 99108946 A EP99108946 A EP 99108946A EP 0956949 A2 EP0956949 A2 EP 0956949A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
dampening
doctor
spray
nozzles
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Withdrawn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
EP99108946A
Other languages
German (de)
English (en)
Other versions
EP0956949A3 (fr
Inventor
Martin Heinz 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 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 AG filed Critical Koenig and Bauer AG
Publication of EP0956949A2 publication Critical patent/EP0956949A2/fr
Publication of EP0956949A3 publication Critical patent/EP0956949A3/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Withdrawn legal-status Critical Current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
    • 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 spray dampening unit accordingly the preamble of claim 1.
  • a disadvantage of such nozzle systems is that as a result Pollution, d. H. Fixing paper and Paint particles on the nozzle mouthpiece of the spray nozzle Nozzle outlet geometry is changed so that Quality defects appear on the printed image.
  • JP-A-01-009737 shows a spray dampening device in which dampened air by means of a second Air jet is applied to a plate.
  • the invention has for its object a Deposit prevention device To create nozzle outlet openings of spray nozzles.
  • a spray dampener for moistening objects especially one clockwise A rotatable dampening cylinder, e.g. B. dampening cylinder 1, consists of an axially parallel to Spray bar 2 extending dampening cylinder 1.
  • the dampening cylinder 1 which is a metallic Has surface, z. B. at one Four-roller spray dampening system for the purpose Dampening solution transfer via a dampening roller, a Intermediate dampening roller and a dampening roller with are connected to a plate cylinder.
  • the spray bar 2 consists of a cross section U-shaped support 3, which at both ends is fixed to the side frame.
  • a first leg 4 takes a number of spaced-apart nozzles-6, preferably flat fan nozzles.
  • Each nozzle 6 has a connection 7 for dampening solution and stands with one of a solenoid valve, not shown actuated plunger in connection, which the Controls the supply of dampening solution.
  • the nozzle 6 has a funnel-shaped nozzle mouthpiece 8 on the inside of which is a nozzle bore containing nozzle insert 9 is attached.
  • a nozzle bore containing nozzle insert 9 is attached.
  • One by everyone Nozzle 6 on the surface 11 of the dampening cylinder 1 emissable fountain solution flat jet 12 is within one open in the direction of the lateral surface 11 Dampening solution blasting chamber 13 on the spray bar 2 submitted.
  • the dampening solution blasting chamber 13 is next to the first leg 4 of the carrier 3 of two the radius of the Lateral surface 11 of the dampening cylinder 1 laterally adapted side panels 14 and a lower Bottom plate 16 and an upper cover plate 17 limited.
  • the bottom plate 16 is at the base 18 of the U-shaped Carrier 3 attached.
  • the cover plate 17 is by means of a Hinge 19 at the end of a second leg 21 of the Carrier 3 pivotally attached, so that at the same time the U-shaped carrier 3 open at the top can be covered.
  • Both ends 22; 23 facing dampening cylinder 1 the lower and upper cover 16; 17 can with in Can be pushed back and forth towards the dampening cylinder 1 strip-shaped flow sheet plates 24; 26 provided be so that between the upper and lower limit of the dampening solution blasting chamber 13 and the jacket 11 of the Wet friction cylinder 1 an adjustable gap b in Range of 0.5 to 5 mm arises.
  • the pivotable cover plate 17 is not by means shown closures against side frame fixed Stops 27 can be fixed and by means of a sealing strip 28 towards the end of the first leg 4 of the carrier 3 sealable.
  • a pneumatic doctor device 29 which extends in the axis-parallel direction of the dampening cylinder 1 and acts on the lateral surface 11, is arranged.
  • the doctor device 1 extends at least over the bale length of the dampening cylinder 1.
  • This doctor device 29 has one or more in the axis-parallel direction to the dampening cylinder 1 arranged flat jet nozzles 31, which are permanently connected to compressed air, for. 8. be supplied in the range from 0.1 to 4.5 bar (0.1 to 4.5 ⁇ 10 5 Pa) overpressure ( Figure 1).
  • the doctor device 29 is in Direction of rotation A of the dampening cylinder 1 seen, one itself in the axially parallel direction of the dampening cylinder 1 acting suction device 33 upstream, which consists of a suction box, which with a connection 35 is provided for a source of suction air.
  • suction box borders on the pneumatic one Doctor device 29 and is parallel by a bottom flow baffle 39 extending thereto is limited, which on its facing the dampening cylinder 1 End 40 is turned against the direction of rotation A and in Distance b to the lateral surface 11 runs.
  • Both the doctor device 29 and the Suction device 33 can on the base plate 16 outside of the fountain solution blasting chamber 13, which by a bracket 34 may be reinforced.
  • the device according to the invention works as follows: During the run the cylinders of the spray dampening system becomes the fine applied to the dampening cylinder 1 Dampening solution mist of the dampening solution flat jet 12 smoothed by the following dampening solution rollers and forwarded to the plates of the plate cylinder. Due to the high machine speeds with the resulting resulting high peripheral speeds of Dampening solution rollers cause ink and ink to tear off Paper particles in the direction of the dampening cylinder 1 and spray bar 2 are transported.
  • This doctor device 38 has several in the direction of rotation A at a distance c, e.g. B. in a range of 1 to 10 mm, doctor blades 41, 42, 43 arranged one behind the other.
  • These doctor blades 41 to 43 exist after a first one Design variant each from a doctor blade, z. B. made of steel or plastic with a thickness of 1 to 10 mm.
  • Between the doctor blades 43, 42 are each Spacers 46, 47 and between the doctor blades 42, 41 are each spacers 48, 49 arranged.
  • the squeegees 41 to 43 and the spacers 46 to 49 are each by fasteners, e.g. B. screws together ally.
  • the lower doctor blade 41 can be compared to the doctor blades 42, 43 have a larger width so that a protruding End 53 by fasteners, e.g. B. screws 54 on the base plate 16 or a carrier 34 of the Spray bar 2 is fastened several times.
  • This multi-stage doctor blade device is expedient 38 opened only in the direction of the dampening cylinder 1, encapsulated. So that one during the Barrel of the spray dampening system Airflow, which is covered with paint and paper particles 36 is enriched, behind each in the direction of Wet friction cylinder 1 facing edges 56, 57, 58 of the Squeegees 41 to 43 swirl and the particles settle between the doctor blades 41 to 43.
  • the edges 56, 57, 58 are at an adjustable distance b from the lateral surface 11 arranged.
  • Each of the doctor blades 41 to 43 consists of a second one Design variant from a coolable doctor blade.
  • each squeegee sheet its edge 56 to 58 with a. It is also possible to close each squeegee sheet its edge 56 to 58 with a. To provide cavity in which coolant circulates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Nozzles (AREA)
EP99108946A 1996-01-24 1997-01-17 Dispositif de mouillage par pulverisation Withdrawn EP0956949A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19602408 1996-01-24
DE19602408 1996-01-24
EP97914063A EP0876256B1 (fr) 1996-01-24 1997-01-17 Dispositif de mouillage par pulverisation

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97914063A Division EP0876256B1 (fr) 1996-01-24 1997-01-17 Dispositif de mouillage par pulverisation

Publications (2)

Publication Number Publication Date
EP0956949A2 true EP0956949A2 (fr) 1999-11-17
EP0956949A3 EP0956949A3 (fr) 1999-12-29

Family

ID=7783517

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99108946A Withdrawn EP0956949A3 (fr) 1996-01-24 1997-01-17 Dispositif de mouillage par pulverisation
EP97914063A Expired - Lifetime EP0876256B1 (fr) 1996-01-24 1997-01-17 Dispositif de mouillage par pulverisation

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP97914063A Expired - Lifetime EP0876256B1 (fr) 1996-01-24 1997-01-17 Dispositif de mouillage par pulverisation

Country Status (3)

Country Link
EP (2) EP0956949A3 (fr)
DE (1) DE59701465D1 (fr)
WO (1) WO1997027052A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009041582A1 (fr) * 2007-09-28 2009-04-02 Baldwin-Japan Ltd. Amortisseur de jet
WO2010044458A1 (fr) * 2008-10-18 2010-04-22 日本ボールドウィン株式会社 Amortisseur de jet

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6152032A (en) * 1998-11-05 2000-11-28 Heidelberger Druckmaschinen Ag Mist containment system for a spray dampener system
SE516747C2 (sv) * 2000-05-17 2002-02-26 Baldwin Jimek Ab Sätt och anordning att hindra igensättning av spraymunstycken och/eller en avskärmningsplatta hos en sprayfuktanordning
SE524552C2 (sv) 2002-05-17 2004-08-24 Baldwin Jimek Ab Metod och anordning för att hålla ett antal spraymunstycken i en tryckpress-spraybom rena
DE102007052573B4 (de) 2007-11-03 2015-04-09 Manroland Web Systems Gmbh Feuchtwerk

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901290C (de) * 1948-10-06 1954-01-11 Ernst Wagner Vorrichtung zum Befeuchten von Druckplatten
US4044674A (en) * 1974-07-24 1977-08-30 Smith R.P.M. Corporation Spray dampening system for high quality offset printing
JPS63158252A (ja) * 1986-12-20 1988-07-01 Kazuo Maruta オフセツト印刷機の湿し方法並びに装置
JPS649737A (en) * 1987-07-03 1989-01-13 Kindaishiya Kk Method for moistening plate surface in wet offset printing
US5040457A (en) * 1989-10-10 1991-08-20 Rockwell International Corporation Printing press dampener
DE4301950A1 (de) * 1993-01-25 1994-07-28 Koenig & Bauer Ag Verfahren und Vorrichtung zum Verhindern eines Niederschlages eines unerwünschten aerosolartigen Mediums in einer Rotationsdruckmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009041582A1 (fr) * 2007-09-28 2009-04-02 Baldwin-Japan Ltd. Amortisseur de jet
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
WO2010044458A1 (fr) * 2008-10-18 2010-04-22 日本ボールドウィン株式会社 Amortisseur de jet

Also Published As

Publication number Publication date
DE59701465D1 (de) 2000-05-25
EP0876256B1 (fr) 2000-04-19
EP0876256A2 (fr) 1998-11-11
WO1997027052A2 (fr) 1997-07-31
EP0956949A3 (fr) 1999-12-29
WO1997027052A3 (fr) 1997-10-23

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