EP0087625B1 - Device for engaging, disengaging and adjusting forme rollers at the forme cylinder of printing machines - Google Patents

Device for engaging, disengaging and adjusting forme rollers at the forme cylinder of printing machines Download PDF

Info

Publication number
EP0087625B1
EP0087625B1 EP83101216A EP83101216A EP0087625B1 EP 0087625 B1 EP0087625 B1 EP 0087625B1 EP 83101216 A EP83101216 A EP 83101216A EP 83101216 A EP83101216 A EP 83101216A EP 0087625 B1 EP0087625 B1 EP 0087625B1
Authority
EP
European Patent Office
Prior art keywords
plate cylinder
rollers
bearing
cam
adjustment
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
Application number
EP83101216A
Other languages
German (de)
French (fr)
Other versions
EP0087625A1 (en
Inventor
Joachim Herzel
Claus Simeth
Rudolf Mitze
Robert Ortner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6157198&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0087625(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT83101216T priority Critical patent/ATE21065T1/en
Publication of EP0087625A1 publication Critical patent/EP0087625A1/en
Application granted granted Critical
Publication of EP0087625B1 publication Critical patent/EP0087625B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/301—Devices for tripping and adjusting form rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/32—Lifting or adjusting devices

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • Devices for switching on, off and setting are necessary in order to be able to switch the application rollers on and off in relation to the plate cylinder when printing starts and stops. Maintaining the center distances between the application rollers and the plate cylinder is necessary for constant operating conditions so that the contact pressure remains constant and the inking or dampening of the printing plate can be controlled.
  • a device is described in French patent specification 1 207883, which allows the application rollers to be placed together on the plate cylinder or removed from it.
  • it contains an annular cam disc, which is centered on the axis of the plate cylinder on an extension of the eccentric plate cylinder bearing.
  • the cam disk can be rotated over a limited angle by means of a linkage, with spacers between the cam disk and the application rollers following the cam shape.
  • the position of the application rollers with respect to the plate cylinder can be adjusted with the aid of a pre-adjustment. This is possible with the help of wedge elements and set screws that are stored in the housing of the printing press.
  • CH-PS-231 504 describes a device on rotary printing presses for lifting application rollers.
  • the application rollers can be turned on and off here via a cam plate mounted centrally on the plate cylinder axis on part of the plate cylinder bearing.
  • the application rollers are mounted in forks, which in turn are attached to swivel plates mounted in the machine housing. The forks allow radial and tangential adjustments of the application rollers on the plate cylinder.
  • DE-PS-2 627 963 describes a device on printing presses for adjusting the application rollers on the plate cylinder. It has a support disk attached to the eccentric bearing of the plate cylinder. The support disc is provided with cam segments that compensate for the eccentric movement of the plate cylinder in relation to the application rollers by the pivoting movement of the support disc.
  • the object of the invention is to provide a device with which an existing inclination of the printing plate mounted on the plate cylinder can be compensated for by a corresponding adjustment of the plate cylinder axis, without the contact pressure between the application rollers and the plate cylinder and, on the other hand, between the plate cylinder adjustment Plate cylinder and blanket cylinder changed along the cylinder axis.
  • the object is achieved in that the bearing journal of the plate cylinder is mounted within its eccentric bearings in additional bearing means which enable a linear movement relative to these eccentric bearings, and in that the annular cams are rotatably seated directly on the bearing journal and thus independently of the eccentric bearing.
  • the annular cam disks are thus arranged according to the invention rotatable about the plate cylinder axis on the bearing journal. An adjustment movement of the application rollers during an adjustment movement of the plate cylinder by means of eccentric rotation is thus avoided.
  • the solution according to the invention brings the additional advantage that when compensating for a printing plate inclination, in which the plate cylinder is inclined relative to the rubber cylinder due to the additional bearing means provided within the eccentric bearing, only slight compressive stress changes occur in the axial direction between the plate cylinder and rubber cylinder, since these bearing means make a straight line movement in the tangential direction possible in the contact zone between plate and blanket cylinder.
  • the plate cylinder of an offset printing press is shown here as an example.
  • the representations in FIGS. 1 and 2 show sections through the mounting of the plate cylinder 1.
  • the cam disk 3 is mounted centrally on the journal 2 to control the inking rollers 5. It cooperates with the centering means 7 of the inking rollers 5 indicated here.
  • the drive for pivoting consists of a hydraulic or pneumatic cylinder 9, the piston rod of which engages an extension of the cam plate 3.
  • the extension of the cam disc 3 is assigned an adjustment stop 11 and an end stop 13.
  • the adjustment stop 11 is used to determine the position of the inking rollers 5 on the plate cylinder 1.
  • the end stop 13 is used to determine the storage position of the inking rollers 5.
  • the drive movement is therefore used for turning on and off Parking the inking rollers 5 only between these two stops 11, 13.
  • FIG. 2 shows the corresponding assignment of the dampening application rollers 6 and their adjusting means 8 via the cam plate 4 on the bearing journal 2 to the plate cylinder 1.
  • the associated drive consists of a pneumatic or hydraulic cylinder 10, an adjustment stop 12 for determining the starting position and an end stop 14 for fixing the parking position of the dampening rollers 6.
  • the curve shape of the cams 3 and 4 determines the setting of the application rollers 5 and 6.
  • three positions are shown schematically.
  • a setting for a normal plate cylinder lift or worn application rollers or possibly application rollers with a smaller diameter is shown in FIG. 3A.
  • the adjustment stop 11 for determining the position of the position should be drivable. He has retracted and enables the cam plate 3 to pivot so far with the aid of the drive 9 that the adjusting means 7 of the inking roller 5 abuts against a curve area of the cam plate 3 which is at a correspondingly small distance from the plate cylinder axis about the inking roller 5 in the desired manner to turn on the plate cylinder 1.
  • the center distance between the inking roller 5 and the plate cylinder 1 must be increased.
  • the adjustment stop 11 is extended in the direction of the cam disk 3.
  • the cam 3 can no longer be pivoted so far and the adjusting means 7 of the inking rollers 5 are at a point on the curve with a greater distance from the plate cylinder axis.
  • the desired setting between inking roller 5 and plate cylinder 1 can also be maintained here only by pivoting the cam plate 3.
  • the cam plate 3 is pivoted against the end stop 13 as shown in FIG. 3C.
  • the end stop 13, which defines the position of the parking cams on the cam plate 3, relative to the adjusting means 7 of the inking rollers 5, is normally set only once. Therefore, it makes sense to make it manually operable, since it is only required for installation.
  • FIGS. 3 B and 3 C represent the basic position from FIG. 3 A.
  • the setting of the application roller 5 with the cam disc 3 applies mutatis mutandis to all other application rollers 5, 6 and the associated cam discs 3, 4.
  • two identical adjusting devices 3, 4, 9-14 are necessary on both the dampening unit and the inking unit.
  • FIG. 4 shows a superimposition of the section 0-O from FIG. 2 in the upper half and U-U from FIG. 1 in the lower half.
  • the cams 3, 4 are arranged on the journal 2 independently of the eccentric bearing 20 of the plate cylinder 1 within the machine housing 15 and rotatably mounted.
  • the bearing of the cams 3, 4 is not shown in detail. They work together with schematically indicated adjustment means 7, 8 on the axes of the application rollers 5, 6.
  • the function of the cams 3, 4 as a spacer for determining the center distance between the application rollers 5, 6 and the plate cylinder 1 is clear here.
  • the structure of the adjusting means 7, 8 is shown in more detail in FIG. 5.
  • the applicator rollers 5 they are mounted in swivel arms 17 with respect to the axis of the friction roller 16.
  • the axis of the friction roller 16 is fixed in the plane parallel to the machine housing, while the axes of the application rollers 5 can be moved by means of the swivel arms 17.
  • the application rollers 5 can at a constant center distance, the z. B. eccentrics between the grater roller 16 and the applicator rollers 5 should be adjustable to be moved around the grater 16 without changing the rolling conditions between the rollers.
  • the curve areas of the cams 3 must be for each corresponding edition Points of set screws 18 on the applicator rollers 5, 6 have slopes so designed that when the cam disc 3, 4 rotates, an identical change in the center distance on both applicator rollers 5, 6 with respect to the plate cylinder 1 is produced.
  • the basic setting of the application rollers 5, 6 to the plate cylinder 1 is carried out by screwing or unscrewing the set screws 18 into the swivel arms 17.
  • the set screws 18 are secured against twisting by the contact force of the compression springs. This means that the same level can be set for all application rollers 5, 6 starting from the parking position. Adjustment is also possible if, for any reason, the roller diameters should change differently or individual application rollers would have to be replaced, for example.
  • the simultaneous setting of all application rollers 5, 6, for example, to a stronger plate cylinder lift or to a changed roller adjustment, but also during operation in the event of a pressure interruption in order to park and restart the application rollers in the same adjustment position that existed before the pressure interruption, is simple and quick with the help the cams 3, 4 made.
  • the coaxial arrangement of the cams 3, 4 directly on the bearing journal 2 means that the employment of the application rollers 5, 6 on the plate cylinder 1 is always largely preserved.
  • An example of a movement of the bearing journal 2 within the eccentric bearing 20 is shown in FIG.
  • the mounting of the plate cylinder is built into the eccentric bearing 20 and consists of a part 21 which is arranged centrally to the plate cylinder axis and which has a straight guide inside and the actual plate cylinder bearing 22.
  • the plate cylinder bearing 22 is flattened on two sides of its circumference and can be countered by the adjusting bolt 23
  • Spring unit 24 can be moved slightly within the straight guide of part 21.
  • the second plate cylinder bearing, not shown here, is also designed.
  • the applicator rollers 5, 6 lying in front of the plate cylinder 1 pivot in the direction of displacement, while the applicator rollers 5, 6 lying behind the plate cylinder 1 move towards one another and the parallel applicator rollers 5, 6 remain stationary.
  • the change in the assignment is shown in FIG. 7 for the case of pressure provision using the eccentric bearing 20.
  • the size of the adjustment path has been greatly exaggerated.
  • the center of the cylinder at point B is pivoted around the center of the bearing at point A to B '.
  • a straight line movement from B to B ' would also be conceivable, which would then result in the same initial and final state with regard to the geometry.
  • the grater axis at point C is fixed.
  • the adjustment path of the bearing journal 2 within the eccentric bearing 20 is 0.5 mm on both bearings in the opposite direction in each case.
  • the conversion of such a displacement of the plate cylinder 1 in the direction of the maximum effect on the applicator roller 5 results in a tangential displacement of 0.8 at its radius of 30 mm, a grater with a 40 mm radius and a plate cylinder 1 with a 140 mm radius on the applicator roller 5 mm.
  • the slope of the displacement curve of cam 3 from 1/40 to the calculated tangential displacement then results in a radial displacement of 20!
  • the application roller 5 is turned on or off when the plate cylinder 1 f.Lm 20 f.Lm approaches or is removed. This is a maximum displacement that rarely occurs in reality, since the application rollers 5, 6 are distributed approximately over 180 ° on the circumference of the plate cylinder 1. Even if such a shift occurs, as can already occur with changes in the pressure supply via the eccentric bearing 20, a roll strip that has the width of the flattened roll surface of 10 mm can be used as in application rolls with a rubber surface with a roll pitch of about 0.5 mm generate, have little impact. They correspond to a widening or narrowing of the roller strip by 0.1 mm.
  • the end stops 13, 14 for the parking position and the set screws 18, which are then designed as spring bolts, can also be made drivable and remotely controlled.
  • the entire setting process can be carried out in data memory and kept ready for electronic control according to characteristic curves which are adapted to the cam disks 3, 4 and the operating conditions. Then it is e.g. B. possible to automatically compensate for the effects of the tangential and, via the cams 3, 4, also radial adjustment of the application rollers 5, 6 when the plate cylinder is adjusted to the adjustment path.
  • the swivel path of the cams 3, 4 can be optimized in relation to the position of the parking cam d. H. the curve adjustment can also be kept as short as possible.
  • the position of the starting position can then be chosen as close as possible to the parking cam.
  • the wear condition of the application rollers 5, 6 can also be controlled by an automated control of the contact force of the individual application rollers via the compression spring 19, and effects on the printing process, that is to say the application of ink or dampening solution, can be compensated for by targeted adjustment of individual rollers.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of claim 1.

Einrichtungen zum An-, Ab- und Einstellen sind notwendig, um die Auftragwalzen bei Druckbeginn und Druckabstellung entsprechend zum Plattenzylinder an- bzw. abstellen zu können. Die Einhaltung insbesondere der Achsabstände zwischen den Auftragwalzen und dem Plattenzylinder sind für konstante Betriebsbedingungen notwendig, damit der Anstelldruck konstant bleibt und die Einfärbung bzw. die Feuchtung der Druckplatte kontrolliert werden kann.Devices for switching on, off and setting are necessary in order to be able to switch the application rollers on and off in relation to the plate cylinder when printing starts and stops. Maintaining the center distances between the application rollers and the plate cylinder is necessary for constant operating conditions so that the contact pressure remains constant and the inking or dampening of the printing plate can be controlled.

Vorrichtungen dieser Art sind bereits bekannt. So ist in der französischen Patentschrift 1 207883 eine Vorrichtung beschrieben, die es erlaubt, die Auftragwalzen gemeinsam an den Plattenzylinder anzustellen oder von ihm abzustellen. Sie enthält dazu eine ringförmige Nockenscheibe, die zentrisch zur Plattenzylinderachse auf einem Ansatz des exzentrischen Plattenzylinderlagers sitzt. Die Nockenscheibe kann über einen begrenzten Winkel mittels eines Gestänges verdreht werden, wobei Abstandshalter zwischen Nockenscheibe und den Auftragwalzen der Nockenform folgen. Außerdem können die Auftragwalzen mit Hilfe einer Vorjustierung in ihrer Lage gegenüber dem Plattenzylinder eingestellt werden. Das ist mit Hilfe von Keilelementen und Stellschrauben, die im Gehäuse der Druckmaschinen gelagert sind, möglich.Devices of this type are already known. For example, a device is described in French patent specification 1 207883, which allows the application rollers to be placed together on the plate cylinder or removed from it. For this purpose, it contains an annular cam disc, which is centered on the axis of the plate cylinder on an extension of the eccentric plate cylinder bearing. The cam disk can be rotated over a limited angle by means of a linkage, with spacers between the cam disk and the application rollers following the cam shape. In addition, the position of the application rollers with respect to the plate cylinder can be adjusted with the aid of a pre-adjustment. This is possible with the help of wedge elements and set screws that are stored in the housing of the printing press.

In der CH-PS-231 504 ist eine Einrichtung an Rotationsdruckmaschinen zum Abheben von Auftragwalzen beschrieben. Die Auftragwalzen sind hier über eine zentrisch zur Plattenzylinderachse auf einem Teil des Plattenzylinderlagers gelagerte Kurvenplatte an- und abstellbar. Die Auftragwalzen sind in Gabeln gelagert, die ihrerseits an im Maschinengehäuse gelagerten Schwenkplatten befestigt sind. Die Gabeln lassen radiale und tangentiale Einstellungen der Auftragwalzen am Plattenzylinder zu.CH-PS-231 504 describes a device on rotary printing presses for lifting application rollers. The application rollers can be turned on and off here via a cam plate mounted centrally on the plate cylinder axis on part of the plate cylinder bearing. The application rollers are mounted in forks, which in turn are attached to swivel plates mounted in the machine housing. The forks allow radial and tangential adjustments of the application rollers on the plate cylinder.

Weiterhin ist in der DE-PS-2 627 963 eine Vorrichtung an Druckmaschinen zum Verstellen der Auftragwalzen am Plattenzylinder beschrieben. Sie weist eine an dem Exzenterlager des Plattenzylinders befestigte Auflagerscheibe auf. Die Auflagerscheibe ist mit Kurvensegmenten versehen, die die Exzenterbewegung des Plattenzylinders gegenüber den Auftragwalzen durch die Schwenkbewegung der Auflagerscheibe ausgleichen.Furthermore, DE-PS-2 627 963 describes a device on printing presses for adjusting the application rollers on the plate cylinder. It has a support disk attached to the eccentric bearing of the plate cylinder. The support disc is provided with cam segments that compensate for the eccentric movement of the plate cylinder in relation to the application rollers by the pivoting movement of the support disc.

Alle diese bekannten Einrichtungen weisen den Nachteil auf, daß sie eine Schrägstellung der Druckplatte auf dem Plattenzylinder, wie sie für Registerkorrekturen notwendig sein kann, nur durch Verdrehen der Exzenterlager kompensieren können, was dazu führt, daß sich der Anstelldruck zwischen Platten- und Gummizylinder in Axialrichtung ändert.All these known devices have the disadvantage that they can only compensate for an inclined position of the printing plate on the plate cylinder, as may be necessary for register corrections, by rotating the eccentric bearing, which leads to the fact that the contact pressure between the plate and blanket cylinders in the axial direction changes.

Aufgabe der Erfindung ist es, eine Einrichtung zu schaffen, mit der eine vorhandene Schrägstellung der auf den Plattenzylinder aufgezogenen Druckplatte durch eine entsprechende Verstellung der Plattenzylinderachse kompensierbar ist, ohne daß sich durch die Plattenzylinderverstellung der Anstelldruck einerseits zwischen den Auftragwalzen und dem Plattenzylinder und anderseits auch zwischen Plattenzylinder und Gummizylinder längs der Zylinderachse verändert.The object of the invention is to provide a device with which an existing inclination of the printing plate mounted on the plate cylinder can be compensated for by a corresponding adjustment of the plate cylinder axis, without the contact pressure between the application rollers and the plate cylinder and, on the other hand, between the plate cylinder adjustment Plate cylinder and blanket cylinder changed along the cylinder axis.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Lagerzapfen des Plattenzylinders innerhalb seiner Exzenterlager in zusätzlichen, eine geradlinige Bewegung gegenüber diesen Exzenterlagern ermöglichenden Lagermitteln gelagert ist, und daß die ringförmigen Kurvenscheiben drehbar direkt auf dem Lagerzapfen und somit unabhängig vom Exzenterlager aufsitzen.The object is achieved in that the bearing journal of the plate cylinder is mounted within its eccentric bearings in additional bearing means which enable a linear movement relative to these eccentric bearings, and in that the annular cams are rotatably seated directly on the bearing journal and thus independently of the eccentric bearing.

Die ringförmigen Kurvenscheiben sind somit erfindungsgemäß um die Plattenzylinderachse drehbar auf dessen Lagerzapfen angeordnet. Damit wird eine Verstellbewegung der Auftragwalzen bei einer Verstellbewegung des Plattenzylinders, mittels Exzenterverdrehung vermieden. Die erfindungsgemäße Lösung bringt dabei den zusätzlichen Vorteil, daß sich bei der Kompensation einer Druckplattenschrägstellung, bei der der Plattenzylinder durch die zusätzlichen, innerhalb des Exzenterlagers vorgesehenen Lagermittel gegenüber dem Gummizylinder schräggestellt wird, nur geringe Druckspannungsänderungen zwischen Plattenzylinder und Gummizylinder in Achsrichtung entstehen, da diese Lagermittel eine geradlinige Bewegung in tangentialer Richtung in der Berührungszone zwischen Platten- und Gummizylinder möglich machen. Ein Beispiel zur Ausführung der Einrichtung gemäß der Erfindung wird im folgenden beschrieben und in schematischen Zeichnungen dargestellt.The annular cam disks are thus arranged according to the invention rotatable about the plate cylinder axis on the bearing journal. An adjustment movement of the application rollers during an adjustment movement of the plate cylinder by means of eccentric rotation is thus avoided. The solution according to the invention brings the additional advantage that when compensating for a printing plate inclination, in which the plate cylinder is inclined relative to the rubber cylinder due to the additional bearing means provided within the eccentric bearing, only slight compressive stress changes occur in the axial direction between the plate cylinder and rubber cylinder, since these bearing means make a straight line movement in the tangential direction possible in the contact zone between plate and blanket cylinder. An example of the implementation of the device according to the invention is described below and shown in schematic drawings.

Im einzelnen enthalten die Zeichnungen in

  • Figur 1 eine Darstellung der Farbauftragwalzen und ihrer Stelleinrichtung am Plattenzylinder,
  • Figur 2 .eine Darstellung der Feuchtauftragwalzen und ihrer Stelleinrichtungen am Plattenzylinder,
  • Figur 3 eine Darstellung der geometrischen Beziehungen zwischen Auftragwalze, Nockenscheibe und Plattenzylinder für verschiedene Betriebsbedingungen,
  • Figur 4 einen achsparallelen Schnitt durch die Stelleinrichtung und die exzentrische Zylinderlagerung,
  • Figur 5 eine Darstellung der Justiermittel zum Festlegen der Grundeinstellung der Auftragwalzen,
  • Figur 6 einen achsparallelen Schnitt durch die Stelleinrichtungen und eine verstellbare Zylinderlagerung,
  • Figur 7 eine Darstellung der geometrischen Beziehungen zwischen Auftragwalzen und Plattenzylinder bei Plattenzylinderbewegungen.
In detail, the drawings contain in
  • FIG. 1 shows the inking rollers and their actuating device on the plate cylinder,
  • 2 shows a representation of the dampening rollers and their actuating devices on the plate cylinder,
  • FIG. 3 shows the geometric relationships between applicator roller, cam disk and plate cylinder for different operating conditions,
  • FIG. 4 shows an axially parallel section through the adjusting device and the eccentric cylinder bearing,
  • FIG. 5 shows the adjustment means for determining the basic setting of the application rollers,
  • FIG. 6 shows an axially parallel section through the actuating devices and an adjustable cylinder bearing,
  • FIG. 7 shows a representation of the geometric relationships between application rollers and plate cylinders during plate cylinder movements.

Als Beispiel ist hier der Plattenzylinder einer Offsetdruckmaschine gezeigt. Die Darstellungen in Figur 1 und 2 zeigen Schnitte durch die Lagerung des Plattenzylinders 1. Die Kurvenscheibe 3 ist zur Steuerung der Farbauftragwalzen 5 zentrisch auf dem Lagerzapfen 2 gelagert. Sie arbeitet mit den hier angedeuteten Zentriermitteln 7 der Farbauftragwalzen 5 zusammen. Der Antrieb zum Schwenken besteht aus einem Hydraulik-oder Pneumatikzylinder 9, dessen Kolbenstange an einem Fortsatz der Kurvenscheibe 3 angreift. Dem Fortsatz der Kurvenscheibe 3 zugeordnet sind ein Verstellanschlag 11 und ein Endanschlag 13. Der Verstellanschlag 11 dient zur Festlegung der Anstellposition der Farbauftragwalzen 5 am Plattenzylinder 1. Der Endanschlag 13 dient zur Festlegung der Abstellposition der Farbauftragwalzen 5. Die Antriebsbewegung wird also zum An- bzw. Abstellen der Farbauftragwalzen 5 nur zwischen diesen beiden Anschlägen 11, 13 ausgeführt.The plate cylinder of an offset printing press is shown here as an example. The representations in FIGS. 1 and 2 show sections through the mounting of the plate cylinder 1. The cam disk 3 is mounted centrally on the journal 2 to control the inking rollers 5. It cooperates with the centering means 7 of the inking rollers 5 indicated here. The drive for pivoting consists of a hydraulic or pneumatic cylinder 9, the piston rod of which engages an extension of the cam plate 3. The extension of the cam disc 3 is assigned an adjustment stop 11 and an end stop 13. The adjustment stop 11 is used to determine the position of the inking rollers 5 on the plate cylinder 1. The end stop 13 is used to determine the storage position of the inking rollers 5. The drive movement is therefore used for turning on and off Parking the inking rollers 5 only between these two stops 11, 13.

Die Figur 2 zeigt die entsprechende Zuordnung der Feuchtauftragwalzen 6 und deren Justiermittel 8 über die Kurvenscheibe 4 am Lagerzapfen 2 zum Plattenzylinder 1. Der zugehörige Antrieb besteht aus einem Pneumatik- oder Hydraulikzylinder 10, einem Verstellanschlag 12 zum Festlegen der Anstellposition und einem Endanschlag 14 zum Festlegen der Abstellposition der Feuchtauftragwalzen 6.FIG. 2 shows the corresponding assignment of the dampening application rollers 6 and their adjusting means 8 via the cam plate 4 on the bearing journal 2 to the plate cylinder 1. The associated drive consists of a pneumatic or hydraulic cylinder 10, an adjustment stop 12 for determining the starting position and an end stop 14 for fixing the parking position of the dampening rollers 6.

Die Kurvenform der Kurvenscheiben 3 und 4 bestimmt die Einstellung der Auftragwalzen 5 und 6. In Figur 3 sind drei Positionen schematisch dargestellt. Eine Einstellung für einen normalen Plattenzylinderaufzug bzw. abgenutzte Auftragwalzen oder evtl. Auftragwalzen mit geringerem Durchmesser ist in Figur 3 A gezeigt.The curve shape of the cams 3 and 4 determines the setting of the application rollers 5 and 6. In Figure 3, three positions are shown schematically. A setting for a normal plate cylinder lift or worn application rollers or possibly application rollers with a smaller diameter is shown in FIG. 3A.

Der Verstellanschlag 11 zum Festlegen der Anstellposition soll antreibbar` sein. Er ist zurückgefahren und ermöglicht der Kurvenscheibe 3 eine so weite Schwenkung mit Hilfe des Antriebs 9, daß die Justiermittel 7 der Farbauftragwalze 5 an einem Kurvenbereich der Kurvenscheibe 3 anliegt, der einen entsprechend geringen Abstand zur Plattenzylinderachse hat, um die Farbauftragwalzen 5 in gewünschter Weise an den Plattenzylinder 1 anzustellen.The adjustment stop 11 for determining the position of the position should be drivable. He has retracted and enables the cam plate 3 to pivot so far with the aid of the drive 9 that the adjusting means 7 of the inking roller 5 abuts against a curve area of the cam plate 3 which is at a correspondingly small distance from the plate cylinder axis about the inking roller 5 in the desired manner to turn on the plate cylinder 1.

Wenn nun der Plattenzylinderaufzug etwa zur Regulierung der Drucklänge, wie durch den Kreis 25 angedeutet, erhöht wird oder Farbauftragwalzen 5 mit größerem Durchmesser verwendet werden, muß der Achsabstand zwischen der Farbauftragwalze 5 und dem Plattenzylinder 1 vergrößert werden. Dazu wird wie in Figur 3 B dargestellt der Verstellanschlag 11, in Richtung zur Kurvenscheibe 3, ausgefahren. Damit kann die Kurvenscheibe 3 nicht mehr so weit verschwenkt werden und die Justiermittel 7 der Farbauftragwalzen 5, liegen an einem Punkt der Kurve mit größerem Abstand zur Plattenzylinderachse an. Die gewünschte Einstellung zwischen Farbauftragwalze 5 und Plattenzylinder 1 kann auch hier lediglich mit Hilfe einer Verschwenkung der Kurvenscheibe 3 eingehalten werden. Zum Abstellen der Farbauftragwalze 5 wird die Kurvenscheibe 3 gegen den Endanschlag 13 verschwenkt wie in Figur 3 C dargestellt. Der Endanschlag 13, der die Lage der Abstellnocken auf der Kurvenscheibe 3, gegenüber der Justiermittel 7 der Farbauftragwalzen 5, festlegt, wird normalerweise nur einmal eingestellt. Deshalb ist es sinnvoll, sie manuell bedienbar zu machen, da sie nur beim Einbau benötigt wird.If the plate cylinder winding is increased approximately to regulate the printing length, as indicated by the circle 25, or inking rollers 5 with a larger diameter are used, the center distance between the inking roller 5 and the plate cylinder 1 must be increased. For this purpose, as shown in FIG. 3B, the adjustment stop 11 is extended in the direction of the cam disk 3. Thus, the cam 3 can no longer be pivoted so far and the adjusting means 7 of the inking rollers 5 are at a point on the curve with a greater distance from the plate cylinder axis. The desired setting between inking roller 5 and plate cylinder 1 can also be maintained here only by pivoting the cam plate 3. To turn off the inking roller 5, the cam plate 3 is pivoted against the end stop 13 as shown in FIG. 3C. The end stop 13, which defines the position of the parking cams on the cam plate 3, relative to the adjusting means 7 of the inking rollers 5, is normally set only once. Therefore, it makes sense to make it manually operable, since it is only required for installation.

Die strichlierten Linien in Figur 3 B und 3 C geben die Grundposition aus Figur 3 A wieder. Die Einstellung der Auftragwalze 5 mit der Kurvenscheibe 3 gilt sinngemäß für alle anderen Auftragwalzen 5, 6 und die dazugehörigen Kurvenscheiben 3, 4. An einem Offsetdruckwerk sind sowohl am Feuchtwerk als auch am Farbwerk jeweils zwei identische Stelleinrichtungen 3, 4, 9-14 notwendig.The dashed lines in FIGS. 3 B and 3 C represent the basic position from FIG. 3 A. The setting of the application roller 5 with the cam disc 3 applies mutatis mutandis to all other application rollers 5, 6 and the associated cam discs 3, 4. On an offset printing unit, two identical adjusting devices 3, 4, 9-14 are necessary on both the dampening unit and the inking unit.

Die Lage der Kurvenscheiben 3, 4 ist in Figur 4 verdeutlicht die eine Überlagerung der Schnitt 0-O aus Figur 2 in der oberen Hälfte und U-U aus Figur 1 in der unteren Hälfte zeigt. Die Kurvenscheiben 3, 4 sind auf dem Lagerzapfen 2 unabhängig vom Exzenterlager 20 des Plattenzylinders 1 innerhalb des Maschinengehäuses 15 angeordnet und drehbar gelagert. Die Lagerung der Kurvenscheiben 3, 4 ist nicht näher dargestellt. Sie arbeiten mit schematisch angedeuteten Justiermitteln 7, 8 an den Achsen der Auftragwalzen 5, 6 zusammen. Die Funktion der Kurvenscheiben 3, 4 als Abstandshalter für die Festlegung des Achsabstandes zwischen den Auftragwalzen 5, 6 und dem Plattenzylinder 1 wird hier deutlich.The position of the cam disks 3, 4 is illustrated in FIG. 4, which shows a superimposition of the section 0-O from FIG. 2 in the upper half and U-U from FIG. 1 in the lower half. The cams 3, 4 are arranged on the journal 2 independently of the eccentric bearing 20 of the plate cylinder 1 within the machine housing 15 and rotatably mounted. The bearing of the cams 3, 4 is not shown in detail. They work together with schematically indicated adjustment means 7, 8 on the axes of the application rollers 5, 6. The function of the cams 3, 4 as a spacer for determining the center distance between the application rollers 5, 6 and the plate cylinder 1 is clear here.

Der Aufbau der Justiermittel-7, 8 ist in Figur 5 näher dargestellt. Zum Einstellen der Auftragwalzen 5 sind diese in Schwenkarmen 17 gegenüber der Achse der Reiberwalze 16 gelagert. Die Achse der Reiberwalze 16 liegt in der Ebene parallel zum Maschinengehäuse fest, während die Achsen der Auftragwalzen 5 mit Hilfe der Schwenkarme 17 bewegbar sind. Die Auftragwalzen 5 können im konstanten Achsabstand, der mit nicht näher dargestellten Einrichtungen z. B. Exzentern zwischen der Reiberwalze 16 und den Auftragwalzen 5 einstellbar sein soll, um den Reiber 16 herum bewegt werden, ohne dabei die Abrollbedingungen zwischen den Walzen zu verändern.The structure of the adjusting means 7, 8 is shown in more detail in FIG. 5. To set the applicator rollers 5, they are mounted in swivel arms 17 with respect to the axis of the friction roller 16. The axis of the friction roller 16 is fixed in the plane parallel to the machine housing, while the axes of the application rollers 5 can be moved by means of the swivel arms 17. The application rollers 5 can at a constant center distance, the z. B. eccentrics between the grater roller 16 and the applicator rollers 5 should be adjustable to be moved around the grater 16 without changing the rolling conditions between the rollers.

Zur Einstellung der Farbauftragwalzen an den Plattenzylinder 1 sind an den Schwenkarmen 17 Stellschrauben 18 vorgesehen, die durch Gewindelöcher in den Ansätzen der Lagerarme gehen. Zwischen den Lagerarmen 17 und dem Maschinengehäuse 15 sind Druckfedern 19 angebracht. Die Druckfeder 19 zwischen Maschinengehäuse 15 und Lagerarm 17 drückt die Stellschraube 18 gegen die Kurvenscheibe 3. So liegen die Auftragwalzen 5, 6 mit einer Kraft am Plattenzylinder 1 an, die sich als Differenz der Auflagerkraft der Stellschraube 1.8 auf der Kurvenscheibe 3 und der Federkraft ergibt. Durch eine Veränderung der Vorspannung der Druckfedern 19 kann ein größerer Stellbereich erreicht werden. Die Kurvenbereiche der Kurvenscheiben 3 müssen für jeweils korrespondierende Auflagepunkte von Stellschrauben 18 an den Auftragwalzen 5, 6 so ausgebildete Steigungen auf--weisen, daß bei einer Verdrehung der Kurvenscheibe 3, 4 eine identische Achsabstandsänderung an beiden Auftragwalzen 5, 6 gegenüber dem Plattenzylinder 1 hervorgerufen wird.To adjust the inking rollers on the plate cylinder 1 17 set screws 18 are provided on the swivel arms, which go through threaded holes in the approaches of the bearing arms. Compression springs 19 are attached between the bearing arms 17 and the machine housing 15. The compression spring 19 between the machine housing 15 and the bearing arm 17 presses the set screw 18 against the cam disc 3. Thus, the application rollers 5, 6 bear on the plate cylinder 1 with a force which is the difference between the bearing force of the set screw 1.8 on the cam plate 3 and the spring force . A larger adjustment range can be achieved by changing the pretension of the compression springs 19. The curve areas of the cams 3 must be for each corresponding edition Points of set screws 18 on the applicator rollers 5, 6 have slopes so designed that when the cam disc 3, 4 rotates, an identical change in the center distance on both applicator rollers 5, 6 with respect to the plate cylinder 1 is produced.

Die Grundeinstellung der Auftragwalzen 5, 6 zum Plattenzylinder 1 wird durch Einschrauben bzw. Herausdrehen der Stellschrauben 18 in die Schwenkarme 17 vorgenommen. Die Stellschrauben 18 werden durch die Anstellkraft der Druckfedern gegen Verdrehen gesichert. Damit kann etwa von der Abstellposition ausgehend für alle Auftragwalzen 5, 6 ein gleiches Niveau eingestellt werden. Ebenso ist eine Nachstellung möglich, wenn sich aus irgendwelchen Gründen die Walzendurchmesser unterschiedlich ändern sollten oder etwa einzelne Auftragwalzen ausgetauscht werden müßten. Die gleichzeitige Einstellung aller Auftragwalzen 5, 6 etwa auf einen stärkeren Plattenzylinderaufzug oder auf eine veränderte Walzenanstellung, aber auch im Betrieb bei einer Druckunterbrechung zum Abstellen und erneuten Anstellen der Auftragwalzen in die gleiche Anstellposition, die vor der Druckunterbrechnung vorlag, wird einfach und schnell mit Hilfe der Kurvenscheiben 3, 4 vorgenommen. Alle wichtigen Änderungen während des Betriebs können für die Anstellung der Auftragwalzen automatisiert werden. Durch die fernsteuerbaren Verstellanschläge 11, 12 für die Anstellposition und die getrennten Antriebe 9, 10 für die Kurvenscheibe 3, 4 sind sogar die Auftragwalzen einseitig stärker anstellbar, wie es für ein Feuchtwerk sinnvoll sein kann.The basic setting of the application rollers 5, 6 to the plate cylinder 1 is carried out by screwing or unscrewing the set screws 18 into the swivel arms 17. The set screws 18 are secured against twisting by the contact force of the compression springs. This means that the same level can be set for all application rollers 5, 6 starting from the parking position. Adjustment is also possible if, for any reason, the roller diameters should change differently or individual application rollers would have to be replaced, for example. The simultaneous setting of all application rollers 5, 6, for example, to a stronger plate cylinder lift or to a changed roller adjustment, but also during operation in the event of a pressure interruption in order to park and restart the application rollers in the same adjustment position that existed before the pressure interruption, is simple and quick with the help the cams 3, 4 made. All important changes during operation can be automated for the application of the application rollers. The remotely controllable adjustment stops 11, 12 for the starting position and the separate drives 9, 10 for the cam plate 3, 4 even make the application rollers more adjustable on one side, as can be useful for a dampening unit.

Die koaxiale Anordnung der Kurvenscheiben 3, 4 direkt auf dem Lagerzapfen 2 bringt es mit sich, daß die Anstellung der Auftragwalzen 5, 6 am Plattenzylinder 1 immer weitestgehend erhalten bleibt. In Figur 6 ist ein Beispiel für eine Bewegung des Lagerzapfens 2 innerhalb des Exzenterlagers 20 dargestellt. Die Lagerung des Plattenzylinders ist in das Exzenterlager 20 eingebaut und besteht aus einem zentrisch zur Plattenzylinderachse angeordneten Teil 21, das innen eine Geradführung besitzt und dem eigentlichen Plattenzylinderlager 22. Das Plattenzylinderlager 22 ist an zwei Seiten seines Umfanges abgeflacht und kann durch den Verstellbolzen 23 gegen die Federeinheit 24 innerhalb der Geradführung des Teiles 21 geringfügig bewegt werden. Das zweite hier nicht gezeigte Plattenzylinderlager ist ebenso ausgebildet. Mit dieser Einrichtung können Registerfehler mit nur sehr kleinen Änderungen der Druckspannung zwischen Plattenzylinder 1 und Gummizylinder durch eine Plattenzylinderdiagonalverstellung behoben werden. Bei der Verschiebung des Plattenzylinders 1 längs einer geradlinigen Bahn werden die Auftragwalzen 5, 6 mit Hilfe der Kurvenscheiben 3, 4 und der Justiermittel 7, 8 gleichzeitig und nahezu unter Beibehaltung der Abrollbedingungen gleichzeitig verschoben. Die strichlierten Linien in Figur 6 deuten die Stellung nach der Verschiebung an. Die Reiber 16 sind ja senkrecht zu ihrer Achse gestellfest und bewegen sich demzufolge nicht mit. Die Farbauftragwalze 5 wird vom Plattenzylinder 1 weggeschoben und bewegt sich am Schwenkarm 17 um den Reiber 16 herum. Da sich die Kurvenscheibe 3 aber auf dem Lagerzapfen 2 befindet wird die Druckfeder 19 zwischen Schwenkarm 17 und dem Maschinengehäuse 15 zusammengedrückt und die Stellschraube 18, die während dessen nicht verstellt wurde, bleibt so in Kontakt mit der Kurvenscheibe 3, d. h. die Farbauftragwalze 5 wird in gleichem Maß weiterbewegt wie der Plattenzylinder 1. Dabei tritt durch die Anlenkung der Farbauftragwalze 5 an die feststehende Achse des Reibers 16 eine leichte Umfangsbewegung der Farbauftragwalzen 5 auf dem Plattenzylinder und der Stellschrauben auf der Kurvenscheibe 3 auf, wie später noch erläutert wird, die aber nur eine vernachlässigbar geringe Anstellungsveränderung an der Farbauftragwalze 5 bewirkt. Die entsprechend gegengerichtete Bewegung der Feuchtauftragwalze 6 am Plattenzylinder 1 und der zugehörigen Stellschraube 18 an der Kurvenscheibe 4 verursucht genausowenig eine den Druckbetrieb beeinflußende Änderung der Anstellung zwischen den Feuchtauftragwalzen 6 und dem Plattenzylinder 1. Die Wirkung ist allerdings umgekehrt, da die Feuchtauftragwalze 6 infolge der Krafteinwirkung der Druckfeder 19 dem Plattenzylinder 1 und die Stellschraube 18 der Bewegung der Kurvenscheibe 4 folgt, d. h. die Druckfeder 19 wird zwischen dem Maschinengehäuse 15 und dem Schwenkarm 17 geringfügig entspannt. Die Feuchtauftragwalzen 6 bewegen sich aus dieser Sicht also um den Reiber 16 aufeinander zu.The coaxial arrangement of the cams 3, 4 directly on the bearing journal 2 means that the employment of the application rollers 5, 6 on the plate cylinder 1 is always largely preserved. An example of a movement of the bearing journal 2 within the eccentric bearing 20 is shown in FIG. The mounting of the plate cylinder is built into the eccentric bearing 20 and consists of a part 21 which is arranged centrally to the plate cylinder axis and which has a straight guide inside and the actual plate cylinder bearing 22. The plate cylinder bearing 22 is flattened on two sides of its circumference and can be countered by the adjusting bolt 23 Spring unit 24 can be moved slightly within the straight guide of part 21. The second plate cylinder bearing, not shown here, is also designed. With this device, register errors with only very small changes in the compressive stress between plate cylinder 1 and blanket cylinder can be eliminated by means of a plate cylinder diagonal adjustment. When the plate cylinder 1 is displaced along a straight path, the application rollers 5, 6 are displaced simultaneously with the aid of the cams 3, 4 and the adjusting means 7, 8 and almost simultaneously while maintaining the rolling conditions. The dashed lines in Figure 6 indicate the position after the shift. The graters 16 are fixed to the frame perpendicular to their axis and therefore do not move with them. The inking roller 5 is pushed away from the plate cylinder 1 and moves on the swivel arm 17 around the grater 16. However, since the cam 3 is on the bearing journal 2, the compression spring 19 is compressed between the swivel arm 17 and the machine housing 15 and the adjusting screw 18, which was not adjusted during this, remains in contact with the cam 3, i.e. H. the inking roller 5 is moved to the same extent as the plate cylinder 1. Here, due to the articulation of the inking roller 5 on the fixed axis of the grater 16, a slight circumferential movement of the inking rollers 5 on the plate cylinder and the adjusting screws on the cam plate 3 occurs, as will be explained later is, but which causes only a negligible change in employment on the inking roller 5. The corresponding counter-directional movement of the dampening roller 6 on the plate cylinder 1 and the associated adjusting screw 18 on the cam plate 4 does not cause a change in the position between the dampening rollers 6 and the plate cylinder 1 which affects the printing operation. However, the effect is reversed, since the dampening roller 6 due to the action of force the compression spring 19 follows the plate cylinder 1 and the adjusting screw 18 the movement of the cam 4, d. H. the compression spring 19 is slightly relaxed between the machine housing 15 and the swivel arm 17. From this point of view, the dampening application rollers 6 thus move towards one another by the grater 16.

Generell schwenken die in Verschieberichtung vor dem Plattenzylinder 1 liegenden Auftragwalzen 5, 6 also auseinander, während sich die hinter dem Plattenzylinder 1 liegenden Auftragwalzen 5, 6 aufeinander zu bewegen und die parallel liegenden Auftragwalzen 5, 6 stehen bleiben. Die Veränderung der Zuordnung ist in Figur 7 für den Fall der Druckbeistellung mit Hilfe des Exzenterlagers 20 dargestellt. Die Größe des Verstellweges ist dabei stark übertrieben worden. Die Zylindermitte im Punkt B wird um die Lagermitte in Punkt A nach B' geschwenkt. Es wäre aber auch eine geradlinige Bewegung von B nach B' denkbar, die dann den gleichen Anfangs und Endzustand bezüglich der Geometrie ergeben würde. Die Reiberachse im Punkt C liegt fest. Die Achsen der Auftragwalzen 5 in D und E werden aber nach D' bzw. E' bewegt. Die Endstellung wird durch strichlierte Linien angedeutet. Es ist leicht zu sehen, daß die der Schwenkrichtung am nächsten liegende Auftragwalze 5 sich auch am stärksten verschiebt, da der Abstand von E zu E' größer ist als der Abstand D nach D'. Auch die Spreizbewegung der Auftragwalzen 5 ist gut erkennbar. Es muß aber berücksichtigt werden, daß durch die Exzenterbewegung nur im Fall einer Änderung der Druckbeistellung auch Relativbewegungen zwischen Auftragwalzen 5, 6 und Plattenzylinder 1 zustande kommen, die von Bedeutung sind. Bei Druckabstellung bzw. -anstellung wurden normalerweise auch die Auftragwalzen ab- bzw. angestellt.In general, the applicator rollers 5, 6 lying in front of the plate cylinder 1 pivot in the direction of displacement, while the applicator rollers 5, 6 lying behind the plate cylinder 1 move towards one another and the parallel applicator rollers 5, 6 remain stationary. The change in the assignment is shown in FIG. 7 for the case of pressure provision using the eccentric bearing 20. The size of the adjustment path has been greatly exaggerated. The center of the cylinder at point B is pivoted around the center of the bearing at point A to B '. However, a straight line movement from B to B 'would also be conceivable, which would then result in the same initial and final state with regard to the geometry. The grater axis at point C is fixed. The axes of the application rollers 5 in D and E are moved to D 'and E'. The end position is indicated by dashed lines. It is easy to see that the applicator roller 5 closest to the pivoting direction also shifts the most because the distance from E to E 'is greater than the distance D to D'. The spreading movement of the application rollers 5 is also clearly visible. However, it must be taken into account that the eccentric movement only results in relative movements between applicator rollers 5, 6 and plate cylinder 1, even in the event of a change in the pressure supply are interpretation. When the printer was switched off or on, the application rollers were normally also switched off or on.

Für eine beispielhafte Kalkulation der Verschiebungen braucht hier also nur der Fall der Diagonalverstellung des Plattenzylinders berücksichtigt zu werden. Bei einer mittelformatigen Bogen-Offsetdruckmaschine etwa beträgt der Verstellweg des Lagerzapfens 2 innerhalb des Exzenterlagers 20 0,5 mm an beiden Lagern in jeweils entgegengesetzter Richtung. Die Umrechnung einer solchen Verschiebung des Plattenzylinders 1 in Richtung der maximalen Auswirkung an der Auftragwalze 5 ergibt bei deren Radius von 30 mm, einem Reiber mit 40 mm Radius und einem Plattenzylinder 1 mit 140 mm Radius an der Auftragwalze 5 eine tangentiale Verschiebung von 0,8 mm. Die Berücksichtigung der Steigung der Verstellkurve der Kurvenscheibe 3 von 1/40 auf die errechnete tangentiale Verschiebung ergibt dann eine radiale Verschiebung von 20 !J.m, d. h. die Auftragwalze 5 wird bei Annäherung oder Entfernung der Plattenzylinder 1 f.Lm 20 f.Lm angestellt bzw. abgestellt. Das ist eine Maximalverschiebung die in der Realität kaum vorkommt, da die Auftragwalzen 5, 6 ja annähernd über 180° am Umfang des Plattenzylinders 1 verteilt sind. Auch bei einem Auftreten einer solchen Verschiebung, wie sie ja schon bei Druckbeistellungsänderungen über das Exzenterlager 20 entstehen können, kann auf einen Walzenstreifen, der die Breite der Abplattung der angestellten Walzenoberfläche von 10 mm wie in Auftragwalzen mit Gummioberfläche bei einer Walzenanstellung von etwa 0,5 mm erzeugen, nur geringe Auswirkungen haben. Sie entsprechen einer Verbreiterung bzw. Verschmälerung des Walzenstreifens um 0,1 mm. Eine Änderung der Anstellung zwischen den Auftragwalzen 5, 6 und dem Plattenzylinder 1 um 0,5 % gegenüber der normalen Anstellung, wie sie durch die Geometrieänderungen bei der Diagonalverstellung vorkommen kann, hat also eine Veränderung des Walzenstreifens um max. 1 % zur Folge. Damit sind also keine für die Betriebsweise einer Druckmaschine und das Druckergebnis entscheidende Auswirkungen zu erwarten.For an example calculation of the displacements, only the case of the diagonal adjustment of the plate cylinder needs to be taken into account here. In a medium-format sheet-fed offset printing press, for example, the adjustment path of the bearing journal 2 within the eccentric bearing 20 is 0.5 mm on both bearings in the opposite direction in each case. The conversion of such a displacement of the plate cylinder 1 in the direction of the maximum effect on the applicator roller 5 results in a tangential displacement of 0.8 at its radius of 30 mm, a grater with a 40 mm radius and a plate cylinder 1 with a 140 mm radius on the applicator roller 5 mm. Taking into account the slope of the displacement curve of cam 3 from 1/40 to the calculated tangential displacement then results in a radial displacement of 20! J.m. H. the application roller 5 is turned on or off when the plate cylinder 1 f.Lm 20 f.Lm approaches or is removed. This is a maximum displacement that rarely occurs in reality, since the application rollers 5, 6 are distributed approximately over 180 ° on the circumference of the plate cylinder 1. Even if such a shift occurs, as can already occur with changes in the pressure supply via the eccentric bearing 20, a roll strip that has the width of the flattened roll surface of 10 mm can be used as in application rolls with a rubber surface with a roll pitch of about 0.5 mm generate, have little impact. They correspond to a widening or narrowing of the roller strip by 0.1 mm. A change in the position between the application rollers 5, 6 and the plate cylinder 1 by 0.5% compared to the normal position, as can occur due to the geometry changes in the diagonal adjustment, has therefore a change in the roller strip by max. 1% as a result. This means that no decisive effects on the operation of a printing press and the printing result are to be expected.

Verschiedene Elemente der Einrichtung können vorteilhaft weitergebildet werden. Etwa können auch die Endanschläge 13, 14 für die Abstellposition und die dann als Federbolzen ausgebildeten Stellschrauben 18 antreibbar gemacht und ferngesteuert werden. Ferner kann der ganze Einstellvorgang nach Kennlinien, die den Kurvenscheiben 3, 4 und den Betriebsbedingungen angepaßt sind, in Datenspeicher übernommen und für eine elektronische Steuerung bereitgehalten werden. Dann ist es z. B. möglich, die genannten Effekte der tangentialen und über die Kurvenscheiben 3, 4 auch radialen Verstellung der Auftragwalzen 5, 6 bei der Plattenzylinderverstellung auf den Verstellweg rückgerechnet automatisch auszugleichen. Ebenso kann der Schwenkweg der Kurvenscheiben 3, 4 in Bezug auf die Lage des Abstellnockens optimiert werden d. h. die Kurvenverstellung kann auch zeitlich so kurz wie möglich gehalten werden. Die Lage der Anstellposition kann dann ja so nah wie möglich am Abstellnocken gewählt werden. Schließlich kann durch eine automatisierte Kontrolle der Anstellkraft der einzelnen Auftragwalzen über die Druckfeder 19 auch der Verschleißzustand der Auftragwalzen 5, 6 kontrolliert und Auswirkungen auf den Druckprozeß, also Farb- oder Feuchtmittelauftrag, können durch gezielte Nachstellung einzelner Walzen ausgeglichen werden.Various elements of the device can advantageously be further developed. For example, the end stops 13, 14 for the parking position and the set screws 18, which are then designed as spring bolts, can also be made drivable and remotely controlled. Furthermore, the entire setting process can be carried out in data memory and kept ready for electronic control according to characteristic curves which are adapted to the cam disks 3, 4 and the operating conditions. Then it is e.g. B. possible to automatically compensate for the effects of the tangential and, via the cams 3, 4, also radial adjustment of the application rollers 5, 6 when the plate cylinder is adjusted to the adjustment path. Likewise, the swivel path of the cams 3, 4 can be optimized in relation to the position of the parking cam d. H. the curve adjustment can also be kept as short as possible. The position of the starting position can then be chosen as close as possible to the parking cam. Finally, the wear condition of the application rollers 5, 6 can also be controlled by an automated control of the contact force of the individual application rollers via the compression spring 19, and effects on the printing process, that is to say the application of ink or dampening solution, can be compensated for by targeted adjustment of individual rollers.

Claims (4)

1. Apparatus for throwing -on throwing off and position adjustment of applicator rollers (5, 6) on the plate cylinder (1) of printing presses, wherein the plate cylinder (1) is mounted by means of bearing trunnions (2) in eccentric bearings (20) in the press frame, and the applicator rollers are adjustable relative to the plate cylinder and can be thrown on and off relative to the plate cylinder with annular cam discs (3, 4) rotatable about the plate cylinder axes, wherein the cam discs (3, 4) have cam regions for the simutaneous adjustment of the axial distance of all application rollers (5, 6) relative to the plate cylinder (1) in the region of a thrown-on position and up to a thrown-off position, as well as being rotable against end stops (11-14), characterised in that the bearing trunnion (2) of the plate cylinder (1), within its eccentric bearing (20) is mounted in additional bearing means (21-24) enabling a straight line movement relative to this eccentric bearing (20), and that the annular cam discs (3, 4) are set rotatably directly on the bearing trunnion (2) and accordingly independently from the eccentric bearing (20).
2. Apparatus according to claim 1 characterised in that respective cam discs (3, 4) are arranged in each case relative to the ink applicator rollers (5) and the damping applicator rollers (6), and that the cam discs (3, 4) are provided in each case. with their own independently controllable drives (9, 10).
3. Apparatus according to claim 1 characterised in that the one end stop is constructed as adjustable stop (11, 12) for determining the thrown-on position, wherein they are drivable separately or together, remotely controlled, and can be automatically guided into a base position.
4. Apparatus according to claim 1 characterised in that for adjustment of the applicator rollers (5, 6) adjusting bolts (18) cooperating therewith are provided as cam follower parts, which are mounted on mounting arms (17), which are rotatable about the axes of vibrator rollers (16) upstream of the application rollers (5, 6) and which are pretensioned by compression springs (19) in this direction towards the cam discs (3, 4) (Fig. 5).
EP83101216A 1982-03-03 1983-02-09 Device for engaging, disengaging and adjusting forme rollers at the forme cylinder of printing machines Expired EP0087625B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83101216T ATE21065T1 (en) 1982-03-03 1983-02-09 DEVICE FOR ATTACHING, DEACTIVATING AND ADJUSTING APPLICATION ROLLERS ON THE PLATE CYLINDER OF PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3207622A DE3207622C2 (en) 1982-03-03 1982-03-03 Device for connecting, disconnecting and adjusting form rollers on the plate cylinder of printing machines
DE3207622 1982-03-03

Publications (2)

Publication Number Publication Date
EP0087625A1 EP0087625A1 (en) 1983-09-07
EP0087625B1 true EP0087625B1 (en) 1986-07-30

Family

ID=6157198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101216A Expired EP0087625B1 (en) 1982-03-03 1983-02-09 Device for engaging, disengaging and adjusting forme rollers at the forme cylinder of printing machines

Country Status (4)

Country Link
US (1) US4503771A (en)
EP (1) EP0087625B1 (en)
JP (1) JPS58201654A (en)
DE (1) DE3207622C2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458591A (en) * 1982-09-30 1984-07-10 Harris Graphics Corporation Rotary printing press
DE3434670A1 (en) * 1984-09-21 1986-04-03 Basf Ag, 6700 Ludwigshafen DEVICE FOR COVERING A FORM CYLINDER WITH A WRAPPING PLATE
DE3926087C1 (en) * 1989-08-07 1990-10-04 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
JP2938491B2 (en) * 1990-01-10 1999-08-23 株式会社小森コーポレーション Printing machine ink unit
DE4012965C1 (en) * 1990-04-24 1991-02-07 Roland Man Druckmasch Device for the on, off and setting of application rollers
DE9110806U1 (en) * 1991-08-31 1991-10-17 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Device for adjusting form rollers on the plate cylinder of rotary printing machines
US5461978A (en) * 1994-09-27 1995-10-31 Chou; Ching-Ho Printing press
JPH08216376A (en) * 1995-02-09 1996-08-27 Nagano Japan Radio Co Releasing device for processing roller in printing machine
DE19523378A1 (en) * 1995-06-30 1997-01-02 Koenig & Bauer Albert Ag Sheet offset rotary printing machine
US5979324A (en) * 1998-04-15 1999-11-09 Heidelberger Druckmaschinen Ag Position controller for a rotatable adjuster in a printing press
US6347585B1 (en) * 1998-08-04 2002-02-19 Goss Graphic Systems, Inc. Variable gap stabilizer
JP3556130B2 (en) * 1999-08-03 2004-08-18 リョービ株式会社 Offset printing press
DE10023605A1 (en) * 2000-05-15 2002-06-27 Roland Man Druckmasch Device for setting an application roller on the plate cylinder of a printing press
EP1459889A3 (en) * 2001-12-06 2006-04-12 KOENIG & BAUER Aktiengesellschaft Method for operating an inking unit or a dampening unit in a printing machine
DE102004021628B4 (en) * 2004-05-03 2007-09-06 Koenig & Bauer Aktiengesellschaft Bearing arrangement in a printing press for a roller
JP4771211B2 (en) 2005-08-05 2011-09-14 スズキ株式会社 Seat belt device mounting structure with pretensioner mechanism
EP2998116B1 (en) * 2014-09-16 2018-11-28 Bieffebi Srl No-tension tangential flexographic plate mounting device and method
DE102021210416A1 (en) 2021-09-20 2022-10-27 Zf Friedrichshafen Ag Elevator gear for a printing press

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE199350C (en) *
CH231504A (en) * 1943-04-06 1944-03-31 T Maschinenbau Aktiengesellsch Device on rotary printing machines to lift off the application rollers.
US2568761A (en) * 1946-03-22 1951-09-25 Miehle Printing Press & Mfg Pressure adjustment and trip for printing cylinders
US2751843A (en) * 1952-08-29 1956-06-26 Time Inc Self-adjusting form roll
US2853943A (en) * 1953-12-15 1958-09-30 Harris Intertype Corp Plate cylinder and inking roller throwoffs
BE569617A (en) * 1957-07-23
FR1207883A (en) * 1958-07-22 1960-02-19 Color Metal A G Improvements to printing presses
US2986086A (en) * 1959-02-27 1961-05-30 Miller Printing Machinery Co Antifriction eccentric journaling mounting for rotatable member
CH423827A (en) * 1963-09-07 1966-11-15 Planeta Veb Druckmasch Werke Device for adjusting the applicator rollers on printing machines
US3448686A (en) * 1966-12-05 1969-06-10 Miehle Goss Dexter Inc Form roller setting and control means
US3691956A (en) * 1970-11-20 1972-09-19 North American Rockwell Flat adjusting and throw-off arrangement for form roller in printing press
DD125552B1 (en) * 1976-03-22 1989-03-01 Hans Johne DEVICE FOR ADJUSTING THE ROLLERS OF COLOR AND WET WORKS
DE2627963C2 (en) * 1976-06-23 1978-06-29 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Device on printing machines for adjusting the inking rollers that can be brought into contact with the plate cylinder
JPS5952143B2 (en) * 1978-07-18 1984-12-18 三菱電機株式会社 Elevator landing display device
WO1981001266A1 (en) * 1979-11-05 1981-05-14 Dahlgren Mfg Co Portable ink fountain
US4369705A (en) * 1980-09-24 1983-01-25 Harris Corporation Printing press
US4407198A (en) * 1982-04-15 1983-10-04 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Arrangement for securing pure skew adjustment of a plate cylinder in a sheet-fed rotary printing press

Also Published As

Publication number Publication date
DE3207622A1 (en) 1983-09-15
US4503771A (en) 1985-03-12
JPH0323343B2 (en) 1991-03-28
EP0087625A1 (en) 1983-09-07
DE3207622C2 (en) 1985-02-21
JPS58201654A (en) 1983-11-24

Similar Documents

Publication Publication Date Title
EP0087625B1 (en) Device for engaging, disengaging and adjusting forme rollers at the forme cylinder of printing machines
EP0625423B1 (en) Printing unit with skewing and stopping device
EP0061581B2 (en) Support for rollers that can be applied to the plate cylinder of an offset or letterpress printing machine
DE1923475C3 (en) Device for turning the dampening rollers on and off of a rotary offset printing machine with a dampening unit consisting of a fountain roller, a metering roller, an intermediate roller and one or more applicator rollers, which has a lever-operated switching device
DE1486854A1 (en) Rotary printing machines for printing paper rolls
DE3609290A1 (en) BEARING ROLLER
DE3143781C2 (en) Device for supplying a liquid to the cylinders of a rotary printing press
EP0826501B2 (en) Device for adjusting an inking or damping roller in a printing machine
DE4012965C1 (en) Device for the on, off and setting of application rollers
DE4403256C2 (en) Printing machine with an adjusting device for printing / printing off printing unit cylinders and for setting the printing pressure
EP0267504B1 (en) Bearing for reciprocating applicator rollers in printing machines
DE69400707T2 (en) DEVICE FOR ADJUSTING THE DISTANCE BETWEEN CYLINDER AXES IN A PRINTING MACHINE
DE3317746C2 (en) Printing mechanism and method of printing
DE1236529B (en) Device for the storage as well as for the on and off of the middle cylinder of a three-cylinder printing unit
DE4400563C2 (en) Roller in an inking unit or dampening unit of a rotary printing press
DE1241464B (en) Device on a rotary printing press for inclining the axis of the forme cylinder with respect to that of the printing unit cylinder that interacts with it
EP1707361B1 (en) Applicator roller for an offset printing group
EP0403754A2 (en) Device for adjusting the lateral and longitudinal register for a registering drum of a rotary sheet printing machine
EP0684338B1 (en) Blade holder
DE3005664A1 (en) DEVICE FOR DOSING A LIQUID FROM TWO ROLLS GAP
EP0428888A2 (en) Inking unit with zonal dosage of the ink quantity
DE2812688A1 (en) DEVICE FOR DEVELOPING PRINTING PLATES WITH PAIRED UPPER AND BOTTOM ROLLERS
CH564381A5 (en) Rolling mill with at least two rollers - ends of rolls contain grooves or reduced roll-barrel thickness to premit flexure
DD297117A5 (en) DEVICE FOR PRESSURE CHANGE AT MACHINE STOP
DE10210561B4 (en) Device for setting and maintaining the distances between the blanket cylinders of a plurality of printing units of a satellite sheet-fed rotary printing unit from a common impression cylinder

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19830713

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: DOTT. FRANCO CICOGNA

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 21065

Country of ref document: AT

Date of ref document: 19860815

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3364810

Country of ref document: DE

Date of ref document: 19860904

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: HEIDELBERGER DRUCKMASCHINEN AG

Effective date: 19870423

NLR1 Nl: opposition has been filed with the epo

Opponent name: HEIDELBERGER DRUCKMASCHINEN AG

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19890612

NLR2 Nl: decision of opposition
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910128

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910211

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910227

Year of fee payment: 9

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910228

Year of fee payment: 9

Ref country code: AT

Payment date: 19910228

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19910307

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19910327

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920209

Ref country code: AT

Effective date: 19920209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920210

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19920229

Ref country code: CH

Effective date: 19920229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920901

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19921030

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19921103

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 83101216.6

Effective date: 19920904