WO1997027052A2 - Dispositif de mouillage par pulverisation - Google Patents

Dispositif de mouillage par pulverisation Download PDF

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Publication number
WO1997027052A2
WO1997027052A2 PCT/DE1997/000075 DE9700075W WO9727052A2 WO 1997027052 A2 WO1997027052 A2 WO 1997027052A2 DE 9700075 W DE9700075 W DE 9700075W WO 9727052 A2 WO9727052 A2 WO 9727052A2
Authority
WO
WIPO (PCT)
Prior art keywords
spray
dampening
cylinder
doctor
rotation
Prior art date
Application number
PCT/DE1997/000075
Other languages
German (de)
English (en)
Other versions
WO1997027052A3 (fr
Inventor
Martin Heinz Schoeps
Original Assignee
Koenig & Bauer-Albert 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 & Bauer-Albert Ag filed Critical Koenig & Bauer-Albert Ag
Priority to DE59701465T priority Critical patent/DE59701465D1/de
Priority to EP97914063A priority patent/EP0876256B1/fr
Publication of WO1997027052A2 publication Critical patent/WO1997027052A2/fr
Publication of WO1997027052A3 publication Critical patent/WO1997027052A3/fr

Links

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 according to the preamble of claim 1.
  • the invention is based on the object of creating a device for preventing deposits on nozzle outlet openings of spray nozzles.
  • the invention is in the drawing based on two
  • FIG. 1 shows a schematic cross section through a pneumatic doctor device according to the invention
  • Figure 2 shows a schematic cross section through a second embodiment with a multi-stage doctor device.
  • a spray dampening system for moistening objects in particular a clockwise rotating rotation dampening cylinder A, z. B.
  • moist re i bzy l i nde rs 1 consists of a spray bar 2 extending in the axis-parallel direction to the damp re i bzy l i nder 1.
  • the moist rei bzy l i nder 1 which has a metallic surface, can, for. B. in a four-roller spray dampening unit
  • the dampening solution transfer via a dampening roller, a dampening intermediate roller and a dampening roller are connected to a plate cylinder.
  • the spray bar 2 consists of a cross-sectionally U-shaped support 3, which is tenste l lfest mounted on both ends.
  • a first leg 4 receives a number of spaced-apart nozzles 6, preferably flat jet nozzles.
  • Each nozzle 6 has a connection 7 for dampening solution and is connected to a plunger actuated by a solenoid valve, not shown, which controls the supply of dampening solution in cycles.
  • the nozzle 6 has a funnel-shaped nozzle mouthpiece 8, in the interior of which a nozzle insert 9 containing a nozzle bore is fastened.
  • a dampening medium L-F salmon jet 12 that can be emitted from each nozzle 6 onto the lateral surface 11 of the dampened layer 1 is delivered to the spray bar 2 within a dampening solution blasting space 13 that is open in the direction of the lateral surface 11.
  • the Feuchtmi tte l-steel chamber 13 is next to the first leg 4 of the carrier 3 by two the radius of the lateral surface 11 of the damp rei bzy Linders 1 laterally adapted side plates 14 and a lower base plate 16 and an upper cover plate 17 limited.
  • the base plate 16 is attached to the foot piece 18 of the U-shaped support 3.
  • the cover plate 17 is pivotally attached to the end of a second leg 21 of the carrier 3 by means of a hinge 19, so that the U-shaped carrier 3 open at the top can also be covered at the same time.
  • Both the ends 22, 23 of the lower and upper cover 16; 17 can be provided with strip-shaped flow baffles 24; 26 be provided, so that between the upper and lower boundary or wall of the dampening medium jet chamber 13 and the jacket 11 of the dampening coating 1 each an adjustable gap b in the range from 0.5 to 5 mm arises.
  • the pivotable cover plate 17 can be fixed by means of closures (not shown) against fixed stops 27 and by means of a sealing strip 28 can be sealed against the end of the first leg 4 of the carrier 3.
  • a pneumatic rake line 29 Seen in the direction of rotation A of the dampening nozzle 1, in front of the spray bar 2, a pneumatic rake line 29 according to the invention, which extends in the axis-parallel direction of the dampening element 1 and acts on the lateral surface 11, is arranged.
  • the squeegee device 1 extends at least over the bale length of the dampening egg 1.
  • This squeegee device 29 has one or more flat jet nozzles 31 arranged in the axis-parallel direction to the dampening egg 1, which nozzles 31 are permanently connected with compressed air, e.g. B. in the range of 0.1 to 4.5 bar gauge pressure ( Figure 1).
  • the doctor device 29 is in 052 PCI7DE97 / 00075
  • an upstream suction device 33 acting in the axially parallel direction of the moist reie bzyli nders which consists of a suction box which is provided with a connection 35 for a suction Heilque l le.
  • the suction box adjoins the pneumatic squeegee device 29 at the top and is delimited at the bottom by a flow guide plate 39 running parallel to it, which is bent at its end 40 facing the dampening nozzle 1 opposite the direction of rotation A and at a distance b from the lateral surface 11 runs.
  • Both the squeegee device 29 and the suction device 33 can be fastened to the base plate 16 outside the dampening medium jet space 13, which can be reinforced by a carrier 34.
  • the device according to the invention works as follows: While the cylinders of the spray dampening system are running, the fine dampening solution mist of the dampening solution flat jet 12 applied to the dampening device 1 is smoothed by the subsequent dampening means Iwa Izen and applied to the plates of the plate cylinder forwarded. Due to the high machine speeds and the resulting high peripheral speeds of the dampening solution rollers, ink and paper particles are torn off and are transported in the direction of the dampening roller 1 and spray bar 2.
  • the pneumatic doctor device 29 By arranging the pneumatic doctor device 29 in front of the spray bar 2, in particular in connection with the suction device 33, the ink and paper particles 36 entrained by the air stream of the rotating damp rei bzy linders 1 become a wet friction cylinder as a result of the direction axially parallel to the lateral surface 11 1n 1 acting strip-shaped compressed air lock 37 stopped and kept away from the spray dampening system due to the suction.
  • a multi-stage doctor device 38 extending in the axis-parallel direction of the dampening cylinder 1 is arranged (FIG. 2).
  • This rake lei nri direction 38 has several in the direction of rotation A at a distance c, z. B. in a range of 1 to 10 mm, successively arranged doctor blades 41, 42, 43.
  • These squeegees 41 to 43 each consist of a doctor blade, z. B. made of steel or plastic with a thickness of 1 to 10 mm.
  • Spacers 46, 47 are arranged between the doctor blades 43, 42 and spacers 48, 49 are arranged between the doctor blades 42, 41.
  • the doctor blades 41 to 43 and the spacers 46 to 49 are jewei ls by fasteners, for. B. screws connected.
  • Said attachment 46 to 49 located between the squeegees 41 to 43 plus the Fastening elements are repeated at the required intervals in the direction parallel to the axis of the wet tear 1. Between the upper doctor 43 and the lower flow guide 24 there is also a continuous distance with an amount of at least size c.
  • the lower squeegee 41 can have a greater width than the squeegees 42, 43, so that a projecting end 53 by fastening elements, for. B. screws 54 on the base plate 16 or a support 34 of the spray bar 2 is fastened several times.
  • This multistage rake device 38 is expediently opened only in the direction of the dampening zone 1, that is to say it is encapsulated.
  • an air flow which is produced during the running of the spray dampening unit and which is enriched with ink and paper particles 36 is swirled behind the edges 56, 57, 58 of the doctor blades 41 to 43 pointing in the direction of the dampening layer 1 and the particles are deposited between the doctor blades 41 to 43.
  • the edges 56, 57, 58 are arranged at an adjustable distance b from the lateral surface 11.
  • connection 59 for a suction device is provided at the ends of the doctor blades 41 to 43 opposite the cylinder edges 56 to 58 (FIG. 2).
  • Each of the doctor blades 41 to 43 consists of a second one Design variant from a coolable doctor blade.
  • each doctor blade up to the vicinity of its edge 56 to 58 with a cavity in which coolant circulates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Nozzles (AREA)

Abstract

Un dispositif monté sur un dispositif de mouillage par pulvérisation permet d'éviter la formation de dépôts sur les orifices de sortie de buses. A cet effet, il est prévu, vu dans le sens de rotation du cylindre à pulvériser, devant les buses, un système de racle s'étendant parallèlement à l'axe du cylindre et agissant sur le flux d'air entourant la surface extérieure du cylindre.
PCT/DE1997/000075 1996-01-24 1997-01-17 Dispositif de mouillage par pulverisation WO1997027052A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59701465T DE59701465D1 (de) 1996-01-24 1997-01-17 Sprühfeuchtwerk
EP97914063A EP0876256B1 (fr) 1996-01-24 1997-01-17 Dispositif de mouillage par pulverisation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19602408.0 1996-01-24
DE19602408 1996-01-24

Publications (2)

Publication Number Publication Date
WO1997027052A2 true WO1997027052A2 (fr) 1997-07-31
WO1997027052A3 WO1997027052A3 (fr) 1997-10-23

Family

ID=7783517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/000075 WO1997027052A2 (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 (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
EP1155824A2 (fr) * 2000-05-17 2001-11-21 Baldwin Jimek AB Dispositif de mouillage par pulvérisation
WO2003097358A1 (fr) * 2002-05-17 2003-11-27 Baldwin Jimek Ab Procede et dispositif permettant de garder propre un certain nombre de buses de pulverisateur dans une rampe de presse a imprimer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102007052573B4 (de) 2007-11-03 2015-04-09 Manroland Web Systems Gmbh Feuchtwerk
JP2010094928A (ja) * 2008-10-18 2010-04-30 Baldwin Japan Ltd スプレーダンプナ装置

Citations (5)

* 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
EP0272888A2 (fr) * 1986-12-20 1988-06-29 Kazuo Maruta Méthode et appareil pour mouiller le cylindre porte-plaque d'une rotative offset
EP0422400A2 (fr) * 1989-10-10 1991-04-17 Rockwell International Corporation Rouleau de mouillage dans une presse
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS649737A (en) * 1987-07-03 1989-01-13 Kindaishiya Kk Method for moistening plate surface in wet offset printing

Patent Citations (5)

* 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
EP0272888A2 (fr) * 1986-12-20 1988-06-29 Kazuo Maruta Méthode et appareil pour mouiller le cylindre porte-plaque d'une rotative offset
EP0422400A2 (fr) * 1989-10-10 1991-04-17 Rockwell International Corporation Rouleau de mouillage dans une presse
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 178 (M-819), 26.April 1989 & JP 01 009737 A (KINDAISHIYA KK), 13.Januar 1989, *

Cited By (7)

* 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
US6152032A (en) * 1998-11-05 2000-11-28 Heidelberger Druckmaschinen Ag Mist containment system for a spray dampener system
EP1155824A2 (fr) * 2000-05-17 2001-11-21 Baldwin Jimek AB Dispositif de mouillage par pulvérisation
WO2001087603A1 (fr) * 2000-05-17 2001-11-22 Baldwin Jimek Ab Mouilleuse a pulverisation
EP1155824A3 (fr) * 2000-05-17 2003-03-05 Baldwin Jimek AB Dispositif de mouillage par pulvérisation
WO2003097358A1 (fr) * 2002-05-17 2003-11-27 Baldwin Jimek Ab Procede et dispositif permettant de garder propre un certain nombre de buses de pulverisateur dans une rampe de presse a imprimer
US7861651B2 (en) 2002-05-17 2011-01-04 Baldwin Jimek Ab Method and device for keeping a number of spray nozzles in a printing press beam clean

Also Published As

Publication number Publication date
EP0876256B1 (fr) 2000-04-19
WO1997027052A3 (fr) 1997-10-23
DE59701465D1 (de) 2000-05-25
EP0876256A2 (fr) 1998-11-11
EP0956949A2 (fr) 1999-11-17
EP0956949A3 (fr) 1999-12-29

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