EP0962317B1 - Control for a ductor-type inking system - Google Patents
Control for a ductor-type inking system Download PDFInfo
- Publication number
- EP0962317B1 EP0962317B1 EP99109470A EP99109470A EP0962317B1 EP 0962317 B1 EP0962317 B1 EP 0962317B1 EP 99109470 A EP99109470 A EP 99109470A EP 99109470 A EP99109470 A EP 99109470A EP 0962317 B1 EP0962317 B1 EP 0962317B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- roller
- ductor
- ink fountain
- printing
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/14—Applications of messenger or other moving transfer rollers
Definitions
- the invention relates to a control for a lifter inking unit according to the preamble of claim 1.
- the jack roller is between the ink fountain roller and the downstream ink roller (friction roller) back and forth movably supported, this movement by a circumferential curve or a pair of cams with a roller running on them is generated.
- At the investment time is a pair of cam disks that can be rotated relative to each other the lifter roller to the ink fountain roller and / or the first downstream one Ink roller (grater) adjustable.
- a lifter inking unit for a printing press in which the ink fountain roller is assigned a drive such that the Ink fountain roller with printing speed (machine speed) independent speed can be driven.
- the drive for the jack roller consists of two cam disks that can be rotated relative to each other, which together from Printing unit are driven here.
- the cam disc is a phase gear associated with an actuator that relative the rotation of the cams in relation to one another in accordance with characteristic curves stored in a characteristic curve memory the printing speed. This ensures that the available printing speed required amount of ink of the printing form and thus the substrate is fed.
- the geometry of the rotatable cams must be such that a speed-dependent tracking of the lifting movement over the entire Speed range of the printing press is possible.
- the curves must be one have a certain angular range of the disks-taking transition, so that the relative range of rotation of the disks to each other is limited. Is the contour area of the curves with a small radius for the lifting roller to rest determined on the ink fountain roller, this means that at low printing speeds the area with the resulting small radius by corresponding Twisting must be very small. This results in a bottom one Speed and thus the ability to turn the curves.
- a lifter inking unit for a printing press is known from which both the ink fountain roller and jack roller by independently operable drives and upstream controls are operable.
- the object of the present invention is therefore to provide a control for a lifter inking unit to expand in accordance with the preamble of claim 1 so that while avoiding the disadvantages mentioned above, the area for the speed-dependent tracking of the color quantity can be increased can.
- the drive of the ink fountain roller assigned control with the control of the speed-dependent tracked lifter roller and the main drive of the printing machine such is in operative connection, so that below a predetermined printing speed instead of rotating the cams to each other (control of the corresponding actuator) reduces the speed of the ink fountain roller becomes.
- the invention ensures that printing speeds with Corresponding color compensation below that due to the steepness of the characteristic and curve geometry-related minimum speed are possible. This avoids that at a low printing speed, for example too much color in the inking unit when restarting production is promoted and this too much color only over several arches again must be transported out of the inking unit, these sheets then Are waste.
- One with a paint box 2 and not shown color metering elements interacting ink fountain roller 1 has its own drive in the form a motor 3 together with a drive control 4 arranged upstream of this motor 3 on.
- a lifter roller 5 is mounted so that it can move back and forth via bearing arms 6.
- On End of the bearing arms 6 has a rotatable roller 8, which has the force of a Spring 7 in contact with a pair of cam disks 9 which can be rotated relative to one another, 10 is held.
- the cams 9, 10 are via a phase gear 11 driven by the printing unit, not shown.
- An actuator 12 is associated with the phase adjustment gear 11, with an known lifter control 13 with a characteristic memory 14 in operative connection stands.
- One or more characteristic curves are in the characteristic curve memory 14 filed, through which the lifter control 13 and the actuator 12 Phase position of the two cams 9, 10 according to the printing speed will be changed. This ensures that the lifter roller 5 by the those driven by the motor 3 and drive control 4 at a constant speed Ink fountain roller 1 the same amount of ink at all printing speeds decreases and passes on to the inking roller 5.1.
- the lifter control 13 is used to receive pressure-dependent signals with the main drive 15 of the printing machine, not shown, in operative connection.
- the drive control 4 of the motor 3 for the ink fountain roller 1, the lifter control 13 for the actuator 12 of the phase adjustment drive 11 of the cams 9, 10 and the main drive 15 of the printing press, not shown are operatively connected to a controller 16 through which the drive controller 4 depending on the printing speed (machine speed) and 13 speed setpoints depending on the control commands of the lifter control can be specified for the motor 3 of the ink fountain roller 1. It is in particular provided that below a predetermined limit speed, underneath which the cams 9, 10 are twisted to shorten them the contact time of the lifter roller 5 with the ink fountain roller is no longer possible, the target speed value for the jack roller 5 via the drive control 4 a predetermined lower value is shut down.
- the controller 16 receives the main drive 15 of the printing machine, not shown Signals corresponding to machine speed (printing speed). Furthermore, the control 16 can be supplied with signals from the lifter control 13, which can be seen that the adjustment range of the cams 9, 10th is exhausted.
Abstract
Description
Die Erfindung betrifft eine Steuerung für ein Heberfarbwerk gemäß dem Oberbegriff
von Anspruch 1.The invention relates to a control for a lifter inking unit according to the preamble
of
Bei Bogenoffsetdruckmaschinen mit Heberfarbwerken wird die zuzuführende Farbe von einer mit einem Farbmesser oder Dosierelementen zusammenwirkenden Farbkastenwalze über eine Heberwalze an eine der Heberwalze nachgeordnete Farbwalze (Reiberwalze) übertragen und über weitere Farbwalzen und Farbauftragwalzen auf die Druckform aufgetragen. Die Heberwalze ist zwischen der Farbkastenwalze und der nachgeordneten Farbwalze (Reiberwalze) hin- und herbeweglich gelagert, wobei diese Bewegung durch eine umlaufende Kurve bzw. ein Paar von Kurvenscheiben mit darauf ablaufender Rolle erzeugt wird. Bei einem Paar relativ zueinander verdrehbarer Kurvenscheiben ist die Anlagezeit der Heberwalze an die Farbkastenwalze und/oder die erste nachgeordnete Farbwalze (Reiber) einstellbar.In sheet-fed offset printing presses with jack inking units, the one to be fed Color from one interacting with a color knife or dosing elements Ink fountain roller over a lifting roller to one of the lifting roller downstream Ink roller (friction roller) transferred and further ink rollers and Ink rollers are applied to the printing form. The jack roller is between the ink fountain roller and the downstream ink roller (friction roller) back and forth movably supported, this movement by a circumferential curve or a pair of cams with a roller running on them is generated. At the investment time is a pair of cam disks that can be rotated relative to each other the lifter roller to the ink fountain roller and / or the first downstream one Ink roller (grater) adjustable.
Aus der DE 43 14 426 C2 (siehe auch EP-A-0623468) ist ein Heberfarbwerk für eine Druckmaschine bekannt, bei dem der Farbkastenwalze ein Antrieb derartig zugeordnet ist, so daß die Farbkastenwalze mit von der Druckgeschwindigkeit (Maschinengeschwindigkeit) unabhängiger Drehzahl antreibbar ist. Der Antrieb für die Heberwalze besteht aus zwei relativ zueinander verdrehbaren Kurvenscheiben, die gemeinsam vom Druckwerk her angetrieben werden. Den Kurvenscheiben ist ein Phasengetriebe mit einem Stellantrieb zugeordnet, der die Verdrehung der Kurvenscheiben relativ zueinander gemäß in einem Kennlinienspeicher abgelegten Kennlinien in Abhängigkeit der Druckgeschwindigkeit vornimmt. Dadurch wird erreicht, daß die bei der vorliegenden Druckgeschwindigkeit benötigte Farbmenge der Druckform und somit dem Bedruckstoff zugeführt wird.From DE 43 14 426 C2 (see also EP-A-0623468) a lifter inking unit for a printing press is known, in which the ink fountain roller is assigned a drive such that the Ink fountain roller with printing speed (machine speed) independent speed can be driven. The drive for the jack roller consists of two cam disks that can be rotated relative to each other, which together from Printing unit are driven here. The cam disc is a phase gear associated with an actuator that relative the rotation of the cams in relation to one another in accordance with characteristic curves stored in a characteristic curve memory the printing speed. This ensures that the available printing speed required amount of ink of the printing form and thus the substrate is fed.
Die Geometrie der verdrehbaren Kurvenscheiben muß dergestalt sein, daß eine geschwindigkeitsabhängige Nachführung der Heberbewegung über den gesamten Geschwindigkeitsbereich der Druckmaschine möglich ist. Um ein weitestgehend stoßfreies Anlegen der Heberwalze an die Farbkasten- und/oder die nachgeordnete Farbwalze (Reiber) zu gewährleisten, müssen die Kurven einen bestimmten Winkelbereich der Scheiben einnehmenden Übergang aufweisen, so daß dadurch der relative Verdrehbereich der Scheiben zueinander begrenzt ist. Ist der Konturbereich der Kurven mit kleinem Radius für die Anlage der Heberwalze an die Farbkastenwalze bestimmt, so bedingt dies, daß bei geringen Druckgeschwindigkeiten der Bereich mit dem resultierenden kleinen Radius durch entsprechendes Verdrehen sehr klein sein muß. Dadurch ergibt sich eine unterste Geschwindigkeit und somit Verdrehbarkeit der Kurven.The geometry of the rotatable cams must be such that a speed-dependent tracking of the lifting movement over the entire Speed range of the printing press is possible. To a large extent smooth application of the lifting roller to the ink fountain and / or the to ensure downstream ink roller (friction), the curves must be one have a certain angular range of the disks-taking transition, so that the relative range of rotation of the disks to each other is limited. Is the contour area of the curves with a small radius for the lifting roller to rest determined on the ink fountain roller, this means that at low printing speeds the area with the resulting small radius by corresponding Twisting must be very small. This results in a bottom one Speed and thus the ability to turn the curves.
Die oben kurz beschriebene Hebersteuerung bedingt, daß durch eine Kennlinie mit gegebener Steilheit eine Verdrehung der Kurvenscheiben unter einen Wert einer unteren Grenzgeschwindigkeit hinaus nicht mehr möglich ist. Dies wäre nur durch entsprechende Formgebung der Kurvenscheiben möglich, was jedoch eine Verschlechterung des Anlageverhaltens der Heberwalze an die Farbkastenwalze bedingt.The lift control described briefly above requires that by a characteristic with a given slope, the cam disks turn below a value a lower limit speed is no longer possible. That would only be by appropriate shaping of the cams, which is however a Deterioration in the behavior of the lifting roller against the ink fountain roller conditionally.
Aus der GB-A-2 193926 ist ein Heberfarbwerk für eine Druckmaschine bekannt, bei welcher sowohl die Farbkastenwalze als auch Heberwalze durch unabhängig voneinander betreibbare Antriebe sowie vorgeordnete Steuerungen betreibbar sind.From GB-A-2 193926 a lifter inking unit for a printing press is known from which both the ink fountain roller and jack roller by independently operable drives and upstream controls are operable.
Aufgabe der vorliegenden Erfindung ist es daher, eine Steuerung für ein Heberfarbwerk
gemäß dem Oberbegriff von Anspruch 1 derartig zu erweitern, so daß
unter Vermeidung der zuvorstehend genannten Nachteile der Bereich für die
geschwindigkeitsabhängige Nachführung der Farbmenge vergrößert werden
kann.The object of the present invention is therefore to provide a control for a lifter inking unit
to expand in accordance with the preamble of
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1.
Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by the characterizing features of
Gemäß der Erfindung ist vorgesehen, daß die dem Antrieb der Farbkastenwalze zugeordnete Steuerung mit der Steuerung der geschwindigkeitsabhängig nachgeführten Heberwalze sowie dem Hauptantrieb der Druckmaschine derartig in Wirkverbindung steht, so daß unterhalb einer vorgegebenen Druckgeschwindigkeit anstelle der Verdrehung der Kurvenscheiben zueinander (Ansteuerung des entsprechenden Stellantriebes) die Drehzahl der Farbkastenwalze verringert wird. Dadurch ist es möglich, daß unterhalb der gegebenen Minimalgeschwindigkeit die Drehzahl für die Farbkastenwalze derartig reduziert wird, so daß die für die aktuelle Druckgeschwindigkeit vorgesehene Farbmenge in das Farbwerk hinein transportiert wird.According to the invention it is provided that the drive of the ink fountain roller assigned control with the control of the speed-dependent tracked lifter roller and the main drive of the printing machine such is in operative connection, so that below a predetermined printing speed instead of rotating the cams to each other (control of the corresponding actuator) reduces the speed of the ink fountain roller becomes. This makes it possible that below the given minimum speed the speed for the ink fountain roller is reduced so that the for the current printing speed intended amount of ink in the inking unit is transported into it.
Durch die Erfindung ist gewährleistet, daß auch Druckgeschwindigkeiten mit entsprechender Färbungskompensation unterhalb der durch Steilheit der Kennlinie und Kurvengeometrie bedingten Minimalgeschwindigkeit möglich sind. Dadurch wird vermieden, daß bei einer niedrigen Druckgeschwindigkeit, beispielsweise beim Wiederanfahren des Fortdruckes zuviel Farbe in das Farbwerk hinein gefördert wird und dieses zuviel an Farbe erst über mehrere Bögen wieder aus dem Farbwerk heraus transportiert werden muß, wobei diese Bogen dann Makulatur sind.The invention ensures that printing speeds with Corresponding color compensation below that due to the steepness of the characteristic and curve geometry-related minimum speed are possible. This avoids that at a low printing speed, for example too much color in the inking unit when restarting production is promoted and this too much color only over several arches again must be transported out of the inking unit, these sheets then Are waste.
Des weiteren erfolgt die Erläuterung eines Ausführungsbeispiels der Erfindung anhand der einzigen Zeichnung. Diese zeigt die erfindungsgemäße Steuerung in Verbindung mit der der Heberwalze zugeordneten Steuerung sowie dem Hauptantrieb der Druckmaschine.Furthermore, an embodiment of the invention is explained based on the single drawing. This shows the control according to the invention in Connection with the control assigned to the lifting roller and the Main drive of the printing press.
Eine mit einem Farbkasten 2 und nicht dargestellten Farbdosierelementen
zusammenwirkende Farbkastenwalze 1 weist einen eigenen Antrieb in Form
eines Motors 3 nebst einer diesem Motor 3 vorgeordneten Antriebssteuerung 4
auf. Eine Heberwalze 5 ist über Lagerarme 6 hin- und herbeweglich gelagert. Ein
Ende der Lagerarme 6 weist eine drehbare Rolle 8 auf, die über die Kraft einer
Feder 7 in Anlage an ein Paar relativ zueinander verdrehbarer Kurvenscheiben 9,
10 gehalten wird. Die Kurvenscheiben 9, 10 werden über ein Phasengetriebe 11
vom nicht dargestellten Druckwerk her angetrieben. Durch die entsprechend der
Druckgeschwindigkeit rotierenden Kurvenscheiben 9, 10 führt die Heberwalze 5 in
an sich bekannter Weise Bewegungen zwischen der Farbkastenwalze 1 und einer
nachgeordneten und insbesondere als Reiber ausgebildeten Farbwalze 5.1 aus. One with a
Dem Phasenverstellgetriebe 11 ist ein Stellantrieb 12 zugeordnet, der mit einer an
sich bekannten Hebersteuerung 13 mit einem Kennlinienspeicher 14 in Wirkverbindung
steht. Im Kennlinienspeicher 14 sind eine oder mehrere Kennlinien
abgelegt, durch welche über die Hebersteuerung 13 und den Stellantrieb 12 die
Phasenlage der beiden Kurvenscheiben 9, 10 entsprechend der Druckgeschwindigkeit
geändert wird. Dadurch wird erreicht, daß die Heberwalze 5 von der durch
den über den Motor 3 nebst Antriebsteuerung 4 mit konstanter Drehzahl angetriebenen
Farbkastenwalze 1 bei allen Druckgeschwindigkeiten die gleiche Farbmenge
abnimmt und an die Farbwalze 5.1 weitergibt. Die Hebersteuerung 13
steht zum Empfang druckgeschwindigkeitsabhängiger Signale mit dem Hauptantrieb
15 der nicht weiter dargestellten Druckmaschine in Wirkverbindung.An
Die Antriebssteuerung 4 des Motors 3 für die Farbkastenwalze 1, die Hebersteuerung
13 für den Stellantrieb 12 des Phasenverstellantriebes 11 der Kurvenscheiben
9, 10 sowie der Hauptantrieb 15 der nicht dargestellten Druckmaschine
stehen mit einer Steuerung 16 in Wirkverbindung, durch welche der Antriebssteuerung
4 in Abhängigkeit der Druckgeschwindigkeit (Maschinengeschwindigkeit)
und in Abhängigkeit der Stellbefehle der Hebersteuerung 13 Drehzahlsollwerte
für den Motor 3 der Farbkastenwalze 1 vorgegeben werden. Dabei ist
insbesondere vorgesehen, daß unterhalb einer vorgegebenen Grenzgeschwindigkeit,
unterhalb der ein Verdrehen der Kurvenscheiben 9, 10 zur Verkürzung
der Anlagezeit der Heberwalze 5 an die Farbkastenwalze nicht mehr möglich ist,
der Soll-Drehzahlwert für die Heberwalze 5 über die Antriebssteuerung 4 auf
einen vorgegebenen geringeren Wert heruntergefahren wird. Die Steuerung 16
empfängt vom Hauptantrieb 15 der nicht dargestellten Druckmaschine der
Maschinengeschwindigkeit (Druckgeschwindigkeit) entsprechende Signale.
Weiterhin sind der Steuerung 16 von der Hebersteuerung 13 Signale zuführbar,
welchen entnehmbar ist, daß der Verstellbereich der Kurvenscheiben 9, 10
erschöpft ist. The
- 11
- FarbkastenwalzeInk fountain roller
- 22nd
- FarbkastenPaint box
- 33rd
- Motor (Farbkastenwalze 1)Motor (ink fountain roller 1)
- 44th
- Antriebssteuerung (Farbkastenwalze 1)Drive control (ink fountain roller 1)
- 55
- HeberwalzeLifter roller
- 5.15.1
- Farbwalze (Reiber)Ink roller (grater)
- 66
- LagerhebelBearing lever
- 77
- Federfeather
- 88th
- Rollerole
- 99
- KurvenscheibeCam
- 1010th
- KurvenscheibeCam
- 1111
- PhasenverstellgetriebePhase adjustment gear
- 1212th
- StellantriebActuator
- 1313
- HebersteuerungLifter control
- 1414
- KennlinienspeicherCharacteristic curve memory
- 1515
- Hauptantrieb (Druckmaschine)Main drive (printing press)
- 1616
- Steuerungcontrol
Claims (2)
- Control for a ductor type inking unit of a printing press, particularly an offset sheet printing press, with an ink fountain roller (1), a ductor roller (5) as well as an inking roller (5.1) arranged downstream of the ductor roller (5), wherein the ink fountain roller (1) can be driven via a motor (3) with a fitted drive control (4) at preset rotational speeds independent of the printing speed, the dwell of the ductor roller (5) against the ink fountain roller (1) can be followed by means of a fitted drive (6, 7, 8, 9, 10, 11, 12) together with ductor control (13), wherein printing speed dependent signals can be fed to the ductor control (13), characterised in that a control (16) is provided which is connected in signalling terms with the ductor control (13) and the drive control (4) of the ink fountain roller (1), to which printing speed dependent signals can be fed, that, by means of this control (16), below preset printing speeds, the drive control (4) of the ink fountain roller (1) can have preset rotational speed desired values fed to it, whereby, by means of the ductor control (13), a signal can be fed to the control (16) below a given rotational speed value of the press, whereafter, by means of the control (16), the application by the drive control (4) to the ink fountain roller (1) of a diminished desired rotational speed value takes place.
- Control according to Claim 1, characterised in that the control (16) is connected by means of signalling with the main drive (15) of the press.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29809948U DE29809948U1 (en) | 1998-06-04 | 1998-06-04 | Control for a lifter inking unit |
| DE29809948U | 1998-06-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0962317A1 EP0962317A1 (en) | 1999-12-08 |
| EP0962317B1 true EP0962317B1 (en) | 2001-12-19 |
Family
ID=8058047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99109470A Expired - Lifetime EP0962317B1 (en) | 1998-06-04 | 1999-05-12 | Control for a ductor-type inking system |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0962317B1 (en) |
| AT (1) | ATE211067T1 (en) |
| DE (2) | DE29809948U1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19940532B4 (en) | 1998-10-16 | 2007-02-08 | Heidelberger Druckmaschinen Ag | Printing machine with a lifting inking unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1315105A (en) * | 1961-12-05 | 1963-01-18 | Financ De Participation Et De | Improvements made to printing machines, in particular to so-called |
| US3688696A (en) * | 1970-05-08 | 1972-09-05 | Harris Intertype Corp | Motorized ductor roll |
| GB2193926A (en) * | 1986-07-24 | 1988-02-24 | Ratby Eng Co Ltd | Inking system in a printing machine |
| DD276455A1 (en) * | 1988-10-31 | 1990-02-28 | Polygraph Leipzig | LIFTING COLOR FOR QUICK-LAYING ROLL ROTATION PRINTING MACHINES |
| US5090315A (en) * | 1991-06-13 | 1992-02-25 | Man Roland Druckmaschinen Ag | Electronically controllable ink fountain roll drive system, and method |
| ATE150375T1 (en) * | 1993-05-03 | 1997-04-15 | Roland Man Druckmasch | LIFT INK UNIT AND METHOD FOR ADJUSTING INK QUANTITY OF PRINTING MACHINES |
-
1998
- 1998-06-04 DE DE29809948U patent/DE29809948U1/en not_active Expired - Lifetime
-
1999
- 1999-05-12 EP EP99109470A patent/EP0962317B1/en not_active Expired - Lifetime
- 1999-05-12 DE DE59900574T patent/DE59900574D1/en not_active Expired - Lifetime
- 1999-05-12 AT AT99109470T patent/ATE211067T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE59900574D1 (en) | 2002-01-31 |
| DE29809948U1 (en) | 1998-08-06 |
| ATE211067T1 (en) | 2002-01-15 |
| EP0962317A1 (en) | 1999-12-08 |
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