WO1997027052A2 - Spray moistener - Google Patents
Spray moistener Download PDFInfo
- 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
Links
- 239000007921 spray Substances 0.000 title claims abstract description 32
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004040 coloring Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 101150073877 egg-1 gene Proteins 0.000 description 2
- 241000972773 Aulopiformes Species 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
Description
Beschrei bungDescription
SprühfeuchtwerkSpray dampening system
Die Erfindung betrifft ein SprOhfeuchtwerk entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to a spray dampening unit according to the preamble of claim 1.
Durch die US-A 40 44 674 ist ein Sprühfeuchtwerk mit in axialer Richtung nebeneinander angeordneten Sprühdüsen zum Befeuchten eines Formzylinders einer Offsetrotationsdruckmaschine bekannt.From US-A 40 44 674 a spray dampening unit with spray nozzles arranged in the axial direction for moistening a forme cylinder of an offset rotary printing press is known.
Nachtei lig bei derartigen Düsensystemen ist, daß infolge Verschmutzung, d. h. Festsetzen von Papier- und Farbpartikeln am Düsenmundstück der Sprühdüse die Düsenaustrittsgeometrie verändert wird, so daß Qualitätsmängel am Druckbi ld auftreten.Nachtei lig in such nozzle systems is that due to pollution, d. H. Fixing paper and paint particles on the nozzle mouthpiece of the spray nozzle changes the nozzle outlet geometry so that quality defects occur on the print image.
De r Erfindung liegt die Aufgabe zugrunde, eine Einrichtung zum Verhindern von Ablagerungen an Düsenaustrittsöffnungen von Sprühdüsen zu schaffen.The invention is based on the object of creating a device for preventing deposits on nozzle outlet openings of spray nozzles.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Tei ls des Anspruches 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß durch die Anordnung von Rakeleinrichtungen, ggf. noch in Verbindung mit einer Absaugeinrichtung, ein Eindringen von vom Luftstrom des sich drehenden Fa rbre i bzy l i nde rs mitgerissenen Färb- und Papierpartikeln in den Bereich des Sprühbalkens verhindert wird. Somit entfallen Qualitätsmängel beim Drucken, aus Gründen, die mit nicht ordnungsgemäß zugeführtem Feuchtmittel in Verbindung stehen.The advantages that can be achieved with the invention are, in particular, that the arrangement of doctor devices, possibly in conjunction with a Suction device, penetration of coloring and paper particles entrained by the air flow of the rotating dyeing paper is prevented in the area of the spray bar. This eliminates quality defects in printing, for reasons related to improperly supplied fountain solution.
Die Erfindung ist in der Zeichnung anhand von zweiThe invention is in the drawing based on two
Aus führungsbei spi e len dargestellt, die nachfolgend näher beschrieben werden. Es zeigenRepresented from management examples, which are described in more detail below. Show it
Figur 1 einen schematischen Querschnitt durch eine erfindungsgemäße pneumatische Rakeleinrichtung;1 shows a schematic cross section through a pneumatic doctor device according to the invention;
Figur 2 einen schematischen Querschnitt durch ein zweites Ausführungsbeispiel mit einer mehr stufigen Rakeleinrichtung.Figure 2 shows a schematic cross section through a second embodiment with a multi-stage doctor device.
Ein Sprühfeuchtwerk zum Befeuchten von Gegenständen, insbesondere eines in Uhrze i ge rdreh ri chtung A rotierbaren Feuchtzylinders, z. B. Feucht re i bzy l i nde rs 1, besteht aus einem sich in achsparalleler Richtung zum Feucht re i bzy l i nder 1 erstreckenden Sprühbalken 2.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.
Der Feucht rei bzy l i nder 1, welcher eine metallische Oberfläche aufweist, kann z. B. bei einem Vierwalzen-Sprühfeuchtwerk zwecksThe moist rei bzy l i nder 1, which has a metallic surface, can, for. B. in a four-roller spray dampening unit
Feuchtmittelübertragung über eine Feucht rei bwalze, eine Feuchtzwischenwalze und eine Feuchtauftragwa lze mit einem Plattenzylinder in Verbindung stehen. Der Sprühbalken 2 besteht aus einem im Querschnitt U-förmigen Träger 3, welcher an beiden Enden sei tengeste l lfest gelagert ist. Ein erster Schenkel 4 nimmt eine Anzahl voneinander beabstandeter Düsen 6, vorzugsweise Flachstrahldüsen, auf. Jede Düse 6 weist einen Anschluß 7 für Feuchtmittel auf und steht mit einem von einem nicht dargestellten Magnetventi l betätigten Stößel in Verbindung, welcher taktweise die Zufuhr von Feuchtmittel steuert.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.
Die Düse 6 weist ein trichterförmiges Düsenmundstück 8 auf, in dessen Inneren ein eine Düsenbohrung enthaltendes Düseneinsatz 9 befestigt ist. Ein von jeder Düse 6 auf die Mantelfläche 11 des Feuchtrei bzy li nde rs 1 aussendbarer Feuchtmi tte l- F Lachst rah l 12 wird innerhalb eines in Richtung der Mantelfläche 11 offenen Feuchtmittel-Strahlraumes 13 an den Sprühbalken 2 abgegeben. Der Feuchtmi tte l-St rah l räum 13 wird neben dem ersten Schenkel 4 des Trägers 3 von zwei dem Radius der Mantelfläche 11 des Feucht rei bzy linders 1 seitlich angepaßten Seitenblechen 14 sowie einer unteren Bodenplatte 16 und einer oberen Deckplatte 17 begrenzt.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.
Die Bodenplatte 16 ist am Fußstück 18 des U-förmigen Trägers 3 befestigt. Die Deckplatte 17 ist mittels eines Scharniers 19 am Ende eines zweiten Schenkels 21 des Trägers 3 schwenkbar befestigt, so daß auch gleichzeitig der U-förmige, oben offene Träger 3 abdeckbar ist. Beide dem Feucht rei bzy l inder 1 zugewandte Enden 22;23 der unteren und oberen Abdeckung 16; 17 können mit in Richtung Feucht re i bzy l i nde r 1 hin- und herverschiebbaren streifenformigen Strömungsleitblechen 24; 26 versehen sein, so daß zwischen der oberen und unteren Begrenzung oder Wand des Feuchtmi tte l-St rah l raumes 13 und dem Mantel 11 des Feucht rei bzy l i nde rs 1 jeweils ein einstellbarer Spalt b im Bereich von 0,5 bis 5 mm entsteht.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.
Die schwenkbare Deckplatte 17 ist mittels nicht dargestellter Verschlüsse gegen se i tengeste L lfeste Anschläge 27 festlegbar und mittels eines Di chtst rei fens 28 gegen das Ende des ersten Schenkels 4 des Trägers 3 abdi chtbar.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.
In Drehrichtung A des Feucht re i bzy l i nders 1 gesehen, vor dem Sprühbalken 2, ist eine sich in achsparalleler Richtung des Feucht re i bzy l i nders 1 erstreckende, auf die Mantelfläche 11 wirkende erfindungsgemäße pneumatische Rake lei nri chtung 29 angeordnet. Die Rakeleinrichtung 1 erstreckt sich zumindest über die Ballenlänge des Feucht rei bzy l i nders 1. Diese Rakeleinrichtung 29 weist eine oder mehrere in achsparalleler Richtung zum Feuchtrei bzy l i nder 1 angeordnete Flachstrahldüsen 31 auf, welche über einen Anschluß 32 permanent mit Druckluft, z. B. im Bereich von 0,1 bis 4,5 bar Überdruck versorgt werden (Figur 1).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).
Zweckmäßigerweise ist der Rakeleinrichtung 29, in 052 PCI7DE97/00075Advantageously, the doctor device 29 is in 052 PCI7DE97 / 00075
Drehrichtung A des Feucht rei bzyli nders 1 gesehen, eine sich in achsparalleler Richtung des Feuchtrei bzy l i nders 1 wirkende Absaugeinrichtung 33 vorgeschaltet, welche aus einem Absaugkasten besteht, welcher mit einem Anschluß 35 für eine Saug luftque l le versehen ist. Der Absaugkasten grenzt oben an die pneumatische Rakeleinrichtung 29 und wird unten durch ein parallel dazu verlaufendes St römungs le i tblech 39 begrenzt, welches an seinem dem Feucht rei bzy li nder 1 zugewandten Ende 40 entgegen der Drehrichtung A abgebogen ist und im Abstand b zur Mantelfläche 11 verläuft.Direction of rotation A of the moist rei bzyli nders 1, an upstream suction device 33 acting in the axially parallel direction of the moist reie bzy l i nders, which consists of a suction box which is provided with a connection 35 for a suction Luftque 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.
Sowohl die Rakeleinrichtung 29 als auch die Absaugeinrichtung 33 kann an der Bodenplatte 16 außerhalb des Feuchtmi tte l-St rah l raumes 13, welche durch einen Träger 34 verstärkt sein kann, befestigt sein.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.
Die erfindungsgemäße Einrichtung arbeitet wie folgt: Während des Laufes der Zylinder des Sprühfeuchtwerkes wird der auf den Feucht re i bzy l i nder 1 aufgetragene feine Feuchtmittelnebel des Feuchtmittel-Flachstrahles 12 durch die nachfolgenden Feuchtmi tte Iwa Izen geglättet und an die Platten des P lattenzy l i nders weitergeleitet. Durch die hohen Maschinendrehzahlen mit den daraus resultierenden hohen Umfangsgeschwindigkeiten der Feuchtmittelwalzen kommt es zum Abriß von Färb- und Papierpartikeln, die in Richtung Feucht rei bzy li nde r 1 und Sprühbalken 2 transportiert werden. Durch die Anordnung der pneumatischen Rakeleinrichtung 29 vor dem Sprühbalken 2, insbesondere in Verbindung mit der Absaugeinrichtung 33 werden die vom Luftstrom des sich drehenden Feucht rei bzy l inders 1 mitgerissenen Farb- und Papierpartikel 36 infolge der permanent auf die Mantelfläche 11 1n achsparalleler Richtung zum Feuchtreibzylinder 1 wirkenden streifenformigen Druckluftsperre 37 gestoppt und infolge der Absaugung vom Sprühfeuchtwerk ferngehalten.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. 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.
Nach einem zweiten Ausführungsbeispiel ist, in Drehrichtung A des Feucht rei bzy l i nde rs 1 gesehen, vor dem Sprühbalken 2, eine sich in achsparalleler Richtung des Feucht reibzy linders 1 erstreckende mehrstufige Rakeleinrichtung 38 angeordnet (Figur 2).According to a second embodiment, seen in the direction of rotation A of the dampening brush 1, in front of the spray bar 2, a multi-stage doctor device 38 extending in the axis-parallel direction of the dampening cylinder 1 is arranged (FIG. 2).
Diese Rake l e i nri chtung 38 weist mehrere in Drehrichtung A in einem Abstand c, z. B. in einem Bereich von 1 bis 10 mm, hintereinander angeordnete Rakeln 41, 42, 43 auf. Diese Rakeln 41 bis 43 bestehen nach einer ersten Ausführungsvariante jewei ls aus einem Rakelblatt, z. B. aus Stahl oder Kunststoff mit einer Dicke von 1 bis 10 mm. Zwischen den Rakeln 43, 42 sind jeweils Distanzstücke 46, 47 und zwischen den Rakeln 42, 41 sind jewei ls Distanzstücke 48, 49 angeordnet. Die Rakeln 41 bis 43 sowie die Distanzstücke 46 bis 49 sind jewei ls durch Befestigungselemente, z. B. Schrauben miteinander verbunden. Die genannte zwischen den Rakeln 41 bis 43 befindliche Befestigung 46 bis 49 zuzüglich der Befestigungselemente wiederholt sich in erforderlichen Abständen in achsparalleler Richtung zum Feucht rei bzy l i nde r 1. Zwischen der oberen Rakel 43 und dem unteren St römungs le i tb lech 24 besteht auch ein durchgängiger Abstand mit einem Betrag von zumindest der Größe c .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.
Die untere Rakel 41 kann gegenüber den Rakeln 42, 43 eine größere Breite aufweisen, so daß ein überstehendes Ende 53 durch Befestigungselemente, z. B. Schrauben 54 an der Bodenplatte 16 bzw. einem Träger 34 des Sprühbalkens 2 mehrfach befestigt ist.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.
Zweckmäßigerweise ist diese mehrstufige Rake Le i nri chtung 38 nur in Richtung des Feucht re i bzy L i nders 1 geöffnet, also gekapselt ausgebi ldet. Damit wird ein während des Laufes der Zylinder des Sprühfeuchtwerkes entstandener Luftstrom, welcher mit Färb- und Papierpartikeln 36 angereichert ist, jewei ls hinter den in Richtung des Feucht rei bzy L i nders 1 weisenden Kanten 56, 57, 58 der Rakeln 41 bis 43 verwirbelt und die Partikel lagern sich zwischen den Rakeln 41 bis 43 ab. Die Kanten 56, 57, 58 sind im einstellbaren Abstand b von der Mantelfläche 11 angeordnet .This multistage rake device 38 is expediently opened only in the direction of the dampening zone 1, that is to say it is encapsulated. Thus, 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.
Es ist auch von Vortei l, wenn an den den zy L i ndernahen Kanten 56 bis 58 entgegengesetzten Enden der Rakeln 41 bis 43 ein Anschluß 59 für eine Absaυgei nri chtung vorgesehen ist (Figur 2).It is also advantageous if a 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).
Jede der Rakeln 41 bis 43 besteht nach einer zweiten Ausführungsvariante aus einem kühlbaren Rakelblatt.Each of the doctor blades 41 to 43 consists of a second one Design variant from a coolable doctor blade.
Dies kann dadurch geschehen, daß z. B. jedem Rakelblatt eine ein Kühlmittel transportierende Rohrleitung zugeordnet wird.This can be done by z. B. each doctor blade a coolant transporting pipeline is assigned.
Es ist auch möglich, jedes Rakelblatt bis In die Nähe seiner Kante 56 bis 58 mit einem Hohlraum zu versehen, in welchem Kühlmittel umläuft. It is also possible to provide each doctor blade up to the vicinity of its edge 56 to 58 with a cavity in which coolant circulates.
BezugszeichenlisteReference list
1 Feuchtzyli nde r1 dampening cylinder
2 Sprühbalken2 spray bars
3 Träger3 carriers
4 Schenkel, erster (3)4 legs, first (3)
55
6 Düse (3)6 nozzle (3)
7 Ansch luß (6)7 connection (6)
8 Düsenmundstück (6)8 nozzle mouthpiece (6)
9 Düseneinsatz (6)9 nozzle insert (6)
1010
11 Mantelfläche (1)11 outer surface (1)
12 Feuchtmittel-Flachstrahl12 dampening solution flat jet
13 Feuchtmi tte l-St rah l räum (2)13 Moisture-free steel chamber (2)
14 Seitenblech (13)14 side panel (13)
1515
16 Bodenplatte (13)16 base plate (13)
17 Deckplatte (13) 8 Fußstück (3) 9 Scharnier 0 1 Schenke L, zwei ter (3) 2 Ende (16) 3 Ende (17) 4 Strömungs Lei tblech (22) 5 6 Strömungs Lei tblech (23) 7 Ansch lag Di chtstrei fen17 cover plate (13) 8 foot piece (3) 9 hinge 0 1 tavern L, two (3) 2 end (16) 3 end (17) 4 flow guide plate (22) 5 6 flow guide plate (23) 7 stop Seal strips
Rakeleinrichtung, pneumatisch (1)Doctor blade device, pneumatic (1)
Flachstrahldüse (1)Flat jet nozzle (1)
Anschluß (29)Connection (29)
Absaugeinrichtung (1)Suction device (1)
Trägercarrier
Anschluß (33)Connection (33)
Färb- und PapierpartikelColoring and paper particles
Druckluftsperre, st re i fenförmi g (1)Air lock, strip-shaped (1)
Rake Leinri chtung, mehrstufigRake exposure, multi-stage
St römungs Lei tblech (33)Roman sheet (33)
Ende (39)End (39)
Rakel (38)Doctor blade (38)
Rakel (38)Doctor blade (38)
Rakel (38)Doctor blade (38)
Distanzstück (43, 42)Spacer (43, 42)
Distanzstück (43, 42)Spacer (43, 42)
Distanzstück (42, 41)Spacer (42, 41)
Distanzstück (42, 41)Spacer (42, 41)
Ende (41) SchraubeEnd (41) screw
Kante (41) 7 Kante (42) 8 Kante (43) 9 AnschlußEdge (41) 7 edge (42) 8 edge (43) 9 connection
A Drehri chtung (1 )A Direction of rotation (1)
b Spalt (24; 26, 1) c Abstand (41; 42) b gap (24; 26, 1) c distance (41; 42)
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97914063A EP0876256B1 (en) | 1996-01-24 | 1997-01-17 | Spray moistener |
| DE59701465T DE59701465D1 (en) | 1996-01-24 | 1997-01-17 | SPRAY MOISTURE |
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 (en) | 1997-07-31 |
| WO1997027052A3 WO1997027052A3 (en) | 1997-10-23 |
Family
ID=7783517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1997/000075 WO1997027052A2 (en) | 1996-01-24 | 1997-01-17 | Spray moistener |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP0876256B1 (en) |
| DE (1) | DE59701465D1 (en) |
| WO (1) | WO1997027052A2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1004436A1 (en) * | 1998-11-05 | 2000-05-31 | Heidelberger Druckmaschinen Aktiengesellschaft | Device for catching the aerosols in a spray damping system |
| WO2001087603A1 (en) * | 2000-05-17 | 2001-11-22 | Baldwin Jimek Ab | A spray dampening apparatus |
| WO2003097358A1 (en) * | 2002-05-17 | 2003-11-27 | Baldwin Jimek Ab | A method and device for keeping a number of spray nozzles in a printing press beam clean |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2193917A4 (en) * | 2007-09-28 | 2011-12-21 | Baldwin Nippon Kk | Spray dampener |
| DE102007052573B4 (en) | 2007-11-03 | 2015-04-09 | Manroland Web Systems Gmbh | dampening |
| JP2010094928A (en) * | 2008-10-18 | 2010-04-30 | Baldwin Japan Ltd | Spray dampener apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE901290C (en) * | 1948-10-06 | 1954-01-11 | Ernst Wagner | Device for moistening printing plates |
| US4044674A (en) * | 1974-07-24 | 1977-08-30 | Smith R.P.M. Corporation | Spray dampening system for high quality offset printing |
| JPS63158252A (en) * | 1986-12-20 | 1988-07-01 | Kazuo Maruta | Dampening method and arrangement of offset press |
| 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 (en) * | 1993-01-25 | 1994-07-28 | Koenig & Bauer Ag | Aerosol-deposit-prevention system in rotary printing press - has collector for stray aerosol generated by droplet impact on receptor roller |
-
1997
- 1997-01-17 DE DE59701465T patent/DE59701465D1/en not_active Expired - Fee Related
- 1997-01-17 EP EP97914063A patent/EP0876256B1/en not_active Expired - Lifetime
- 1997-01-17 EP EP99108946A patent/EP0956949A3/en not_active Withdrawn
- 1997-01-17 WO PCT/DE1997/000075 patent/WO1997027052A2/en active IP Right Grant
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1004436A1 (en) * | 1998-11-05 | 2000-05-31 | Heidelberger Druckmaschinen Aktiengesellschaft | Device for catching the aerosols in a spray damping system |
| US6152032A (en) * | 1998-11-05 | 2000-11-28 | Heidelberger Druckmaschinen Ag | Mist containment system for a spray dampener system |
| WO2001087603A1 (en) * | 2000-05-17 | 2001-11-22 | Baldwin Jimek Ab | A spray dampening apparatus |
| EP1155824A3 (en) * | 2000-05-17 | 2003-03-05 | Baldwin Jimek AB | A spray dampening apparatus |
| WO2003097358A1 (en) * | 2002-05-17 | 2003-11-27 | Baldwin Jimek Ab | A method and device for keeping a number of spray nozzles in a printing press beam clean |
| 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 |
|---|---|
| EP0956949A2 (en) | 1999-11-17 |
| DE59701465D1 (en) | 2000-05-25 |
| WO1997027052A3 (en) | 1997-10-23 |
| EP0876256B1 (en) | 2000-04-19 |
| EP0956949A3 (en) | 1999-12-29 |
| EP0876256A2 (en) | 1998-11-11 |
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