EP0700782B1 - Damping unit of an offset printing machine - Google Patents
Damping unit of an offset printing machine Download PDFInfo
- Publication number
- EP0700782B1 EP0700782B1 EP95113647A EP95113647A EP0700782B1 EP 0700782 B1 EP0700782 B1 EP 0700782B1 EP 95113647 A EP95113647 A EP 95113647A EP 95113647 A EP95113647 A EP 95113647A EP 0700782 B1 EP0700782 B1 EP 0700782B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dampening
- solution
- dampening solution
- damping
- printing machine
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0054—Devices for controlling dampening
-
- 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
- B41F7/26—Damping devices using transfer rollers
Definitions
- the invention relates to a dampening system Offset rotary printing machine according to the Preamble of the claim.
- the DT 20 54 678 is a dampening unit for one lithographic printing machine with at least one Fountain solution application roller known, by means of which the Fountain solution can be applied to a plate cylinder and one upstream of the dampening solution application roller Roll or dampening solution become known. It is the metering roller opposite the dampening agent application roller or the dampening solution for the purpose of dampening tiltable, the diameter at the ends of the Metering roller is larger than in its central area.
- EP 03 93 365 A2 describes a dampening unit Offset rotary printing machine with an adjustable Dosing roller. A setting of the metering roller is in Dependency of one detected by sensors The amount of dampening solution changed and on a display displayed.
- the invention has for its object a dampening system to create with a metering roller whose Dampening solution metering repeatable depending on the print order is.
- each print job due to the storage of the data of the Dampening solution metering of each metering roller of the dampening unit each print job can be combined into one any time with the same print quality and without repeated loss of time or waste become.
- the invention is based on one Embodiment explained in more detail.
- the associated Drawing shows a schematic side view of a Dampening system with presentation of process-necessary Adjustment and control devices.
- a dampening system consists of one with one Plate cylinder 1 interacting Dampening solution application roller 2, a dampening solution 3 and an adjustable to the dampening solution 3 Dosing roller 4. While the dampening solution 3 over its journal 6 is fixed to the side frame, is the metering roller 4 in around the journal 6 of Dampening solution 3 pivoted levers 7 and stored can be turned by turning eccentric bushings 8 in their distance a between the journal 6 of Dampening agent 3 and axle 9 of the metering roller 4 can be set. This is the sleeve 8 form-fitting with a first end of a lever 11 connected while a second end of the lever 11 articulated with a motor gear unit 12 with integrated position indicator or potentiometer 13 connected is.
- the motor gear unit 12 is between an end of the lever 7 and the mentioned lever 11 articulated.
- the dampening solution 3 is immersed in one Fountain solution container 15 a.
- Metering roller 4 carrying lever 7 and a side frame 14 articulated motor gear unit 16 with integrated position indicator or potentiometer 17 can each lever 7 pivoted and thus the metering roller 4 tilted relative to the dampening solution 3 become.
- the diameter of both ends of the metering roller 4 can be larger than the diameter of the middle one Area of the metering roller 4.
- Each of the parts 6 to 9, 11 to 14 and 16, 17, 19 and 21 is present twice, i. H. separately for each Front of the dampening solution 3 or Metering roller 4, but only once in the drawing shown and labeled only once.
- Each Potentiometer 13; 17 of the motor gear units 12; 16 is for the purpose of position feedback with a z. B. in Machine control station connected to existing computer 18, while the computer 18 with each motor gear unit 12; 16 via an amplifier 19; 21 communicates.
- a streaked the surface of the The dampening solution 3 in the axis-parallel direction scanning dampening solution thickness control device 22 is included the computer 18 and its memory 23 connected and passes information on the from the metering roller 4 to dampening roller 2 by means of Fountain solution 3 transferred fountain solution amount.
- the computer 18 is still with a parent Control or keyboard 24 for entering Control commands and connected to a monitor 26. Expediently, however, several are axially parallel Direction of the dampening solution 3 to each other spaced dampening solution thickness control devices 22 intended
- a recording of the measured values when setting a The metering roller runs as follows: using the keyboard 24 the distance a and thus the contact pressure Metering roller 4 to the dampening solution 3 accordingly pre-set to meet the printing requirements. Likewise, one can over the length of the Dampening solution 3 different dampening quantity due to the separate misalignment of the lever 7 by means of the motor drive unit 16 can be preset.
- Arranged dampening solution thickness control devices 22 conduct the measurement results to the computer 18, whereby on the Monitor 26 compared the actual values with the target values and, if necessary, a correction using the keyboard 18 can be initiated.
- the amount of dampening solution is reached stored and there is a regulation of Amount of dampening solution.
- the stored dampening solution values per print job can repeat orders at any time retrieved from memory 23 of computer 18 and for the dosage of the dampening solution amount can be used.
Description
Die Erfindung betrifft ein Feuchtwerk einer Offsetrotationsdruckmaschine entsprechend dem Oberbegriff des Anspruches.The invention relates to a dampening system Offset rotary printing machine according to the Preamble of the claim.
Durch die DT 20 54 678 ist ein Feuchtwerk für eine lithografische Druckmaschine mit mindestens einer Feuchtmittelauftragswalze bekannt, mittels welcher das Feuchtmittel auf einen Plattenzylinder aufbringbar ist und einer der Feuchtmittelauftragswalze vorgeschalteten Walze bzw. Feuchtmittelduktor bekanntgeworden. Dabei ist die Dosierwalze gegenüber der Feuchmittelauftragswalze bzw. dem Feuchtmittelduktor zwecks Feuchtmitteldosierung schiefstellbar, wobei der Durchmesser an den Enden der Dosierwalze größer ist als in seinem mittleren Bereich.The DT 20 54 678 is a dampening unit for one lithographic printing machine with at least one Fountain solution application roller known, by means of which the Fountain solution can be applied to a plate cylinder and one upstream of the dampening solution application roller Roll or dampening solution become known. It is the metering roller opposite the dampening agent application roller or the dampening solution for the purpose of dampening tiltable, the diameter at the ends of the Metering roller is larger than in its central area.
Nachteilig an diesem Feuchtwerk ist jedoch, daß die einmal eingestellten Werte der Feuchtmitteldosierung für einen gleichen Druckauftrag zu einem späteren Zeitpunkt nur mit größerem Aufwand reproduzierbar sind, wobei viel Makulatur erzeugt wird, um die optimale Feuchtmitteldosierung herauszufinden.A disadvantage of this dampening system, however, is that the once set values of the dampening solution metering for a same print job later reproducible only with great effort, being a lot Waste is generated to the optimum Find out dampening solution dosage.
Die EP 03 93 365 A2 beschreibt ein Feuchtwerk einer Offsetrotationsdruckmaschine mit einer einstellbaren Dosierwalze. Eine Einstellung der Dosierwalze wird in Abhängigkeit einer mittels Sensoren erfaßten Feuchtmittelmenge verändert und auf einem Display angezeigt.EP 03 93 365 A2 describes a dampening unit Offset rotary printing machine with an adjustable Dosing roller. A setting of the metering roller is in Dependency of one detected by sensors The amount of dampening solution changed and on a display displayed.
Der Erfindung liegt die Aufgabe zugrunde, ein Feuchtwerk mit einer Dosierwalze zu schaffen, deren Feuchtmitteldosierung druckauftragsgebunden wiederholbar ist.The invention has for its object a dampening system to create with a metering roller whose Dampening solution metering repeatable depending on the print order is.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des kennzeichnenden Teils des Anspruches gelöst.According to the invention, this object is achieved by the features of the characterizing part of the claim.
Durch die Erfindung werden insbesondere folgende Vorteile erzielt: infolge der Speicherung der Daten der Feuchtmitteldosierung jeder Dosierwalze des Feuchtwerkes je Druckauftrag kann jeder Druckauftrag zu einem beliebigen Zeitpunkt mit gleicher Druckqualität und ohne großen Zeitverlust oder Makulaturaufwand wiederholt werden.The invention in particular the following Advantages achieved: due to the storage of the data of the Dampening solution metering of each metering roller of the dampening unit each print job can be combined into one any time with the same print quality and without repeated loss of time or waste become.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel näher erläutert. Die zugehörige Zeichnung zeigt eine schematische Seitenansicht eines Feuchtwerkes mit Darstellung von verfahrensnotwendigen Verstell- und Kontrolleinrichtungen.The invention is based on one Embodiment explained in more detail. The associated Drawing shows a schematic side view of a Dampening system with presentation of process-necessary Adjustment and control devices.
Ein Feuchtwerk besteht aus einer mit einem
Plattenzylinder 1 zusammenwirkenden
Feuchtmittelauftragswalze 2, einem Feuchtmittelduktor 3
und einer an den Feuchtmittelduktor 3 anstellbare
Dosierwalze 4. Während der Feuchtmittelduktor 3 über
seine Achszapfen 6 seitengestellfest gelagert ist, ist
die Dosierwalze 4 in um die Achszapfen 6 des
Feuchtmittelduktors 3 schwenkbaren Hebeln 7 gelagert und
kann durch Verdrehen von exzentrischen Büchsen 8 in
ihrem Abstand a zwischen den Achszapfen 6 des
Feuchtmitteldukors 3 sowie Achszapfen 9 der Dosierwalze
4 eingestellt werden. Dazu ist die Büchse 8
formschlüssig mit einem ersten Ende eines Hebels 11
verbunden, während ein zweites Ende des Hebels 11
gelenkig mit einer Motor-Getriebeeinheit 12 mit
integriertem Stellungsanzeiger bzw. Potentiometer 13
verbunden ist. Die Motor-Getriebeeinheit 12 ist zwischen
einem feuchtmittelduktorfernen Ende des Hebels 7 und dem
genannten Hebel 11 gelenkig gelagert. Der
Feuchtmittelduktor 3 taucht in einen
Feuchtmittelbehälter 15 ein. Durch Betätigen einer
zwischen dem feuchtmittelduktorfernen Ende des die
Dosierwalze 4 tragenden Hebels 7 und einem Seitengestell
14 gelenkig angeordneter Motor-Getriebeeinheit 16 mit
integriertem Stellungsanzeiger bzw. Potentiometer 17
kann jeder Hebel 7 verschwenkt und somit die Dosierwalze
4 gegenüber dem Feuchtmittelduktor 3 schiefgestellt
werden. Der Durchmesser beider Enden der Dosierwalze 4
kann größer sein als der Durchmesser des mittleren
Bereiches der Dosierwalze 4.A dampening system consists of one with one
Plate cylinder 1 interacting
Dampening
Jeder der Teile 6 bis 9, 11 bis 14 sowie 16, 17, 19 und
21 ist zweimal vorhanden, d. h. separat für jede
Stirnseite des Feuchtmittelduktors 3 bzw. der
Dosierwalze 4, jedoch nur einmal in der Zeichnung
dargestellt und nur einmal bezeichnet. Jedes
Potentiometer 13; 17 der Motor-Getriebeeinheiten 12; 16
ist zwecks Stellungsrückmeldung mit einem z. B. im
Maschinenleitstand vorhandenen Computer 18 verbunden,
während der Computer 18 mit jeder Motor-Getriebeeinheit
12; 16 über einen Verstärker 19; 21 in Verbindung steht.
Ein streifenförmig die Oberfläche des
Feuchtmittelduktors 3 in achsparalleler Richtung
abtastendes Feuchtmitteldickenkontrollgerät 22 ist mit
dem Computer 18 sowie dessen Speicher 23 verbunden und
übergibt Informationen über die von der Dosierwalze 4
zur Feuchtmittelauftragswalze 2 mittels des
Feuchtmittelduktors 3 übertragenen Feuchtmittelmenge.
Der Computer 18 ist weiterhin mit einer übergeordneten
Steuerung oder Tastatur 24 zwecks Eingabe von
Steuerbefehlen sowie mit einem Monitor 26 verbunden.
Zweckmäßigerweise sind jedoch mehrere in achsparalleler
Richtung des Feuchtmittelduktors 3 zueinander
beabstandete Feuchtmitteldickenkontrollgeräte 22
vorgesehen.Each of the parts 6 to 9, 11 to 14 and 16, 17, 19 and
21 is present twice, i. H. separately for each
Front of the dampening solution 3 or
Ein Erfassen der Meßwerte beim Einstellen einer
Dosierwalze läuft wie folgt ab: mittels der Tastatur 24
wird der Abstand a und somit der Anpreßdruck der
Dosierwalze 4 an den Feuchtmittelduktor 3 entsprechend
den drucktechnischen Erfordernissen voreingestellt.
Desgleichen kann eine über die Länge des
Feuchtmittelduktors 3 unterschiedliche Feuchtmittelmenge
infolge des separaten Schiefstellens der Hebel 7 mittels
der Motor-Getreibeeinheit 16 voreingestellt werden. Die
in achsparalleler Richtung zum Feuchtmittelduktor 3
angeeordneten Feuchtmitteldickenkontrollgeräte 22 leiten
die Meßergebnisse dem Rechner 18 zu, wobei auf dem
Monitor 26 die Istwerte mit den Sollwerten verglichen
werden und ggf. mittels der Tastatur 18 eine Korrektur
eingeleitet werden kann. Sind die Sollwerte der
Feuchtmittelmenge erreicht, so werden diese
abgespeichert und es erfolgt eine Regelung der
Feuchtmittelmenge. Die abgespeicherten Feuchtmittelwerte
je Druckauftrag können bei Wiederholaufträgen jederzeit
aus dem Speicher 23 des Computers 18 abgerufen und für
die Dosierung der Feuchtmittelmenge verwendet werden. A recording of the measured values when setting a
The metering roller runs as follows: using the
- 11
- PlattenzylinderPlate cylinder
- 22nd
- FeuchtmittelauftragswalzeFountain roller
- 33rd
- FeuchtmittelduktorDampening solution
- 44th
- DosierwalzeDosing roller
- 55
- --
- 66
- Achszapfen (3)Journal (3)
- 77
- Hebel (3, 4)Lever (3, 4)
- 88th
- Büchse, exzentrisch (9)Rifle, eccentric (9)
- 99
- Achszapfen (4)Journal (4)
- 1010th
- --
- 1111
- Hebellever
- 1212th
- Motor-GetriebeeinheitMotor gear unit
- 1313
- Potentiometer (12)Potentiometer (12)
- 1414
- SeitengestellSide frame
- 1515
- FeuchtmittelbehälterFountain solution container
- 1616
- Motor-GetriebeeinheitMotor gear unit
- 1717th
- Potentiomoter (16)Potentiometers (16)
- 1818th
- Computercomputer
- 1919th
- Verstärker (12)Amplifier (12)
- 2020th
- --
- 2121
- Verstärker (16)Amplifier (16)
- 2222
- FeuchtmitteldickenkontrollgerätDampening solution thickness control device
- 2323
- Speicher (18)Memory (18)
- 2424th
- Tastatur (18)Keyboard (18)
- 2525th
- --
- 2626
- Monitor (18) Monitor (18)
- aa
- Abstand (6, 9)Distance (6, 9)
Claims (1)
- Damping unit (2; 3; 4; 14) of a rotary offset printing machine, having a metering roll (4) which can be pressed against a damping-solution ductor (3) and can be set obliquely, a contact pressure and oblique position of the metering roll (4) being controlled in accordance with a damping solution thickness registered by damping-solution thickness monitoring instruments (22), and the respective position of the metering roll (4), set via a motor-gearbox unit (12; 16), in each case being registered by means of a position indicator (13; 17), characterized in that a position of the metering roll (4) which is suitable for a print job is recorded in a memory (23) of a computer (18), ready to be called up.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4431646 | 1994-09-06 | ||
DE4431646A DE4431646A1 (en) | 1994-09-06 | 1994-09-06 | Dosing roller on a dampening unit of an offset rotary printing press |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0700782A2 EP0700782A2 (en) | 1996-03-13 |
EP0700782A3 EP0700782A3 (en) | 1997-03-12 |
EP0700782B1 true EP0700782B1 (en) | 2000-01-19 |
Family
ID=6527492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95113647A Expired - Lifetime EP0700782B1 (en) | 1994-09-06 | 1995-08-31 | Damping unit of an offset printing machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0700782B1 (en) |
DE (2) | DE4431646A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008061599A1 (en) | 2008-12-11 | 2009-12-03 | Heidelberger Druckmaschinen Ag | Dampening device adjusting method for offset printing machine, involves adjusting contact pressure of one of immersed roller and dosing roller and/or offsetting of one roller relative to other roller by motor |
CN1721179B (en) * | 2004-05-05 | 2010-06-16 | 曼罗兰公司 | Method for adjusting moistening liquid amount in moistening unit for printer |
DE102005015791B4 (en) | 2004-05-03 | 2023-10-26 | Heidelberger Druckmaschinen Ag | Method for adjusting rollers in a printing press |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7225735B2 (en) | 2004-05-03 | 2007-06-05 | Heidelberger Druckmaschinen Ag | Method for roller adjustment in a printing press |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2054678C3 (en) | 1970-11-06 | 1975-05-22 | Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach | Dampening unit for lithographic printing machines |
US4000692A (en) * | 1974-12-03 | 1977-01-04 | Roland Offsetmaschinenfabrik Faber & Schleicher Ag | Throw-off system for rotary offset printing press |
FR2561584B1 (en) * | 1984-03-21 | 1987-06-26 | Marinoni Harris Sa | WATER FILM WETTING DEVICE AND ITS USE ON PRINTING UNITS FOR OFFSET PRESSES |
IT1211266B (en) * | 1987-08-17 | 1989-10-12 | Grapho Eng Srl | AUTOMATIC ADJUSTMENT CONTINUOUS WATERING SYSTEM FOR OFFSET PRINTING MACHINES |
DE3912811A1 (en) * | 1989-04-19 | 1990-10-25 | Heidelberger Druckmasch Ag | METHOD AND DEVICE FOR THE MOISTANT CONTROLLING OF AN OFFSET PRINTING MACHINE |
-
1994
- 1994-09-06 DE DE4431646A patent/DE4431646A1/en not_active Withdrawn
-
1995
- 1995-08-31 DE DE59507633T patent/DE59507633D1/en not_active Expired - Fee Related
- 1995-08-31 EP EP95113647A patent/EP0700782B1/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005015791B4 (en) | 2004-05-03 | 2023-10-26 | Heidelberger Druckmaschinen Ag | Method for adjusting rollers in a printing press |
CN1721179B (en) * | 2004-05-05 | 2010-06-16 | 曼罗兰公司 | Method for adjusting moistening liquid amount in moistening unit for printer |
DE102008061599A1 (en) | 2008-12-11 | 2009-12-03 | Heidelberger Druckmaschinen Ag | Dampening device adjusting method for offset printing machine, involves adjusting contact pressure of one of immersed roller and dosing roller and/or offsetting of one roller relative to other roller by motor |
Also Published As
Publication number | Publication date |
---|---|
DE4431646A1 (en) | 1996-03-07 |
EP0700782A2 (en) | 1996-03-13 |
DE59507633D1 (en) | 2000-02-24 |
EP0700782A3 (en) | 1997-03-12 |
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