EP0387484B1 - Supplementary device for a damping unit of an offset printing press - Google Patents

Supplementary device for a damping unit of an offset printing press Download PDF

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Publication number
EP0387484B1
EP0387484B1 EP90100476A EP90100476A EP0387484B1 EP 0387484 B1 EP0387484 B1 EP 0387484B1 EP 90100476 A EP90100476 A EP 90100476A EP 90100476 A EP90100476 A EP 90100476A EP 0387484 B1 EP0387484 B1 EP 0387484B1
Authority
EP
European Patent Office
Prior art keywords
roller
device frame
bearing
coupling part
damping
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
Application number
EP90100476A
Other languages
German (de)
French (fr)
Other versions
EP0387484A2 (en
EP0387484A3 (en
Inventor
Herbert Rebel
Peter Hummel
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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT90100476T priority Critical patent/ATE89511T1/en
Publication of EP0387484A2 publication Critical patent/EP0387484A2/en
Publication of EP0387484A3 publication Critical patent/EP0387484A3/en
Application granted granted Critical
Publication of EP0387484B1 publication Critical patent/EP0387484B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer rollers

Definitions

  • the invention relates to an additional device for a dampening system according to the preamble of the first claim.
  • a dampening unit of the type mentioned is known from DE-PS 2 649 003.
  • the advantage of the invention is that the additional device can be retrofitted to the known dampening unit type without special precautions.
  • the additional device can thus be used variably, for example only in the case of critical jobs, and is used in the printing unit, which requires special measures against channel effects.
  • a printing plate on a plate cylinder 2 is supplied with dampening liquid from a dampening solution tank by means of a constantly rotating dampening roller 4, a metering roller 5, a dampening device 6 and a dampening solution application roller 7.
  • the dampening solution applicator roller 7 is mounted in a bearing lever 3 mounted eccentrically to the dampening device 6.
  • the additional device has a device frame 1.
  • This frame consists of vertical bearing plates 14 which are screwed or pinned to a frame by an upper cross member 12 and a lower cross member 21, with the bearing plate 14 on both sides first distribution roller 18 and a second distribution roller (tandem roller) 19 receives.
  • Flattened pins 27, 28 of the friction rollers 18, 19 are axially immovable in guides 16 of the bearing plate 14, but radially displaceable relative to the dampening roller 7 under spring action 29.
  • the roller jacket of the friction rollers 18, 19 is rotatably mounted on the roller axes.
  • the resiliently generated contact pressure of the friction rollers 18, 19 is caused by the weight of the device frame 1, so that there is always the same pressure between the friction rollers 18, 19 and application roller 7.
  • the spring 29 is supported on a plate 24 which is fastened on the bearing plate 14 by means of screw 25. By play s between screw 26 and plate 24 there is an adjustment path of the friction rollers 18, 19 radially to the dampening roller 7 (Fig
  • the device frame 1 is received in the bearing lever 3 so that it can move radially relative to the dampener 6, so that the device frame 1 can be coupled and uncoupled in the direction of the arrow or can be uncoupled in the sense of a roller stop (see FIG. 5).
  • the receptacle in the bearing lever 3 consists of a slot 13 and a recess 9, the slot 13 receives an eye 20 of the coupling part 10 in a form-fitting manner. It secures the rotation of the coupling part 10, while the recess 9 secures the lateral position of the coupling part 10.
  • the coupling part 10 is attached laterally on the outside to the pin 8 of the cross member 12.
  • the pin 11 is fastened to the bearing plate 14 and, as an additional guide, has the guide rollers 15, which are supported on counter surfaces on the coupling part 10. In this way, the guide rollers secure the additional device against rotation from its functional position in a uncoupled (parked) position (see FIG. 3).
  • a screw 17 is provided, which is arranged in the direction of the slot 13 in the bearing lever 3.
  • the drive mechanism 22, 23 which causes the axial back-and-forth movement consists in the exemplary embodiment of cam rollers 22 which are fastened to the lower crossmember 21 of the device frame 1 and are supported on both sides by thrust washers 23 of the dampening driver 6, which, as usual, is driven to oscillate laterally by the printing press is.
  • the additional device makes it possible to subsequently arrange additional rollers (tandem rollers) with lateral rubbing on an application roller of a dampening unit in sheet-fed offset printing machines in order to compensate for the excess liquid as a result of channel repercussions.
  • the stroke of the dampener 6 can be switched off, so that the friction rollers 18, 19 then act as rider rollers without axial friction.
  • At least one of the friction rollers 18, 19 or rider rollers must be given a color-guiding surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The supplementary device, which can be integrated in a known damping unit at a later date for the purpose of removing disturbing stencils on the forme damping roller, has a device frame (1), in which tandem grinding rollers (18, 19) have sprung movement radially relative to the common forme damping roller (7) and are driven by the latter by friction in the circumferential direction. <??>Engaging on the device frame (1) is a drive mechanism (22, 23) which causes an axial movement back and forth. <??>The device frame (1) is connected to an existing bearing lever (3) of the damping unit by means of a coupling part (10) so that it can be coupled in, uncoupled or removed. <IMAGE>

Description

Die Erfindung betrifft eine Zusatzvorrichtung für ein Feuchtwerk nach dem Oberbegriff des ersten Patentanspruches.The invention relates to an additional device for a dampening system according to the preamble of the first claim.

Ein Feuchtwerk der genannten Gattung ist aus der DE-PS 2 649 003 bekannt.A dampening unit of the type mentioned is known from DE-PS 2 649 003.

Es ist Aufgabe der Erfindung, eine Zusatzvorrichtung zu schaffen, die geeignet ist, mit einem bereits installierten Feuchtwerk genannter Gattung integriert zu werden und zwar derart, daß Feuchtmittelüberangebot infolge Plattenzylinderkanalrückwirkungen wirksam ausgeglichen werden kann.It is an object of the invention to provide an additional device which is suitable for being integrated with an already installed dampening unit of the type mentioned, in such a way that excess dampening solution as a result of plate cylinder channel reactions can be effectively compensated for.

Gelöst wird die Aufgabe mit den im Kennzeichen des ersten Patentanspruches angegebenen Merkmalen. Weiterbildungen ergeben sich aus den Unteransprüchen.The problem is solved with the features specified in the characterizing part of the first claim. Further training results from the subclaims.

Der Vorteil der Erfindung besteht darin, daß die Zusatzvorrichtung nachträglich an dem bekannten Feuchtwerkstyp ohne besondere Vorkehrungen angebaut werden kann. Die Zusatzvorrichtung ist somit variabel einsetzbar, z.B. nur bei kritischen Aufträgen und kommt in dem Druckwerk jeweils zum Einsatz, das besondere Maßnahmen gegen Kanalrückwirkungen erfordert.The advantage of the invention is that the additional device can be retrofitted to the known dampening unit type without special precautions. The additional device can thus be used variably, for example only in the case of critical jobs, and is used in the printing unit, which requires special measures against channel effects.

Die Erfindung wird nachstehend in einem Ausführungsbeispiel anhand der Zeichnung näher erläutert.The invention is explained in more detail below in an exemplary embodiment with reference to the drawing.

Es zeigt:

Fig. 1
ein Feuchtwerk mit der erfindungsgemäßen Zusatzvorrichtung im angestellten Zustand.
Fig. 2
den Schnitt D-D nach Fig. 1,
Fig. 3
den Schnitt A-A nach Fig. 2, im vergrößerten Maßstab,
Fig. 4
den Schnitt C-C nach Fig. 1,
Fig. 5
das Kupplungsteil 10 im Lagerhebel 3, schematisch,
Fig. 6 und 7
den Lagerhebel 3 in einer Ansicht und im Schnitt E-E.
It shows:
Fig. 1
a dampening system with the additional device according to the invention in the employed state.
Fig. 2
the section DD of FIG. 1,
Fig. 3
the section AA of FIG. 2, on an enlarged scale,
Fig. 4
1 the section CC according to FIG. 1,
Fig. 5
the coupling part 10 in the bearing lever 3, schematically,
6 and 7
the bearing lever 3 in a view and in section EE.

Für gleiche Teile werden nachstehend gleiche Bezugszeichen zur Vereinfachung verwendet.The same reference numerals are used below for the same parts for simplification.

Einer Druckplatte auf einem Plattenzylinder 2 wird aus einem Feuchtmittelbehälter mittels eines sich stetig drehenden Feuchtduktors 4 einer Dosierwalze 5, einem Feuchtreiber 6 und einer Feuchtmittelauftragwalze 7 Feuchtflüssigkeit zugeführt. Die Feuchtmittelauftragwalze 7 ist in einem exzentrisch zum Feuchtreiber 6 gelagerten Lagerhebel 3 gelagert.A printing plate on a plate cylinder 2 is supplied with dampening liquid from a dampening solution tank by means of a constantly rotating dampening roller 4, a metering roller 5, a dampening device 6 and a dampening solution application roller 7. The dampening solution applicator roller 7 is mounted in a bearing lever 3 mounted eccentrically to the dampening device 6.

An diesen Lagerhebel 3 wird die Spindel eines in der Zeichnung nicht dargestellten pneumatischen Hubkolbens angelenkt, mit dessen Hilfe der Lagerhebel 3 in eine abgestellte und in eine angestellte Stellung gebracht werden kann. Durch die exzentrische Lagerung des Lagerhebels 3 wird ein Abstellen der Feuchtmittelauftragwalze 7 auch vom Feuchtreiber 6 erzielt. Zu Einzelheiten wird verwiesen auf die Darlegungen in der DE-PS 2 649 003.The spindle of a pneumatic lifting piston, not shown in the drawing, is articulated to this bearing lever 3, by means of which the bearing lever 3 can be brought into a parked and into an employed position. Due to the eccentric mounting of the bearing lever 3, the dampening agent application roller 7 is also switched off by the dampening device 6. For details, reference is made to the explanations in DE-PS 2 649 003.

Die erfindungsgemäße Zusatzvorrichtung weist ein Vorrichtungsgestell 1 auf. Dieses Gestell besteht aus vertikalen Lagerplatten 14, welche durch eine obere Traverse 12 und eine untere Traverse 21 zu einem Gestell verschraubt bzw. verstiftet sind, wobei beidseitig die Lagerplatte 14 die erste Reibwalze 18 und eine zweite Reibwalze (Tandemwalze) 19 aufnimmt. Abgeflachte Zapfen 27, 28 der Reibwalzen 18, 19 sind in Führungen 16 der Lagerplatte 14 axial unbeweglich, aber radial verschiebbar zur Feuchtauftragswalze 7 unter Federwirkung 29 aufgenommen. Der Walzenmantel der Reibwalzen 18, 19 ist drehbar auf den Walzenachsen gelagert. Der federnd erzeugte Kontaktdruck der Reibwalzen 18, 19 wird durch das Eigengewicht des Vorrichtungsgestells 1 bewirkt, so daß stets gleiche Pressung zwischen Reibwalzen 18, 19 und Auftragwalze 7 vorliegt. Die Feder 29 stützt sich an einer Platte 24 ab, die mittels Schraube 25 auf der Lagerplatte 14 befestigt ist. Durch Spiel s zwischen Schraube 26 und Platte 24 ergibt sich ein Stellweg der Reibwalzen 18, 19 radial zur Feuchtauftragwalze 7 (Fig. 4).The additional device according to the invention has a device frame 1. This frame consists of vertical bearing plates 14 which are screwed or pinned to a frame by an upper cross member 12 and a lower cross member 21, with the bearing plate 14 on both sides first distribution roller 18 and a second distribution roller (tandem roller) 19 receives. Flattened pins 27, 28 of the friction rollers 18, 19 are axially immovable in guides 16 of the bearing plate 14, but radially displaceable relative to the dampening roller 7 under spring action 29. The roller jacket of the friction rollers 18, 19 is rotatably mounted on the roller axes. The resiliently generated contact pressure of the friction rollers 18, 19 is caused by the weight of the device frame 1, so that there is always the same pressure between the friction rollers 18, 19 and application roller 7. The spring 29 is supported on a plate 24 which is fastened on the bearing plate 14 by means of screw 25. By play s between screw 26 and plate 24 there is an adjustment path of the friction rollers 18, 19 radially to the dampening roller 7 (Fig. 4).

Das Vorrichtungsgestell 1 ist durch ein Kupplungsteil 10 radial zum Feuchtreiber 6 beweglich im Lagerhebel 3 aufgenommen, so daß das Vorrichtungsgestell 1 in Richtung des Pfeiles ein- und auskuppelbar bzw. auch abkoppelbar im Sinne einer Walzenabstellung ist (siehe Fig. 5).The device frame 1 is received in the bearing lever 3 so that it can move radially relative to the dampener 6, so that the device frame 1 can be coupled and uncoupled in the direction of the arrow or can be uncoupled in the sense of a roller stop (see FIG. 5).

Die Aufnahme im Lagerhebel 3 besteht aus einem Schlitz 13 und einer Ausnehmung 9, der Schlitz 13 nimmt ein Auge 20 des Kupplungsteiles 10 formschlüssig auf. Er sichert die Verdrehung des Kupplungsteiles 10, während die Ausnehmung 9 die seitliche Position des Kupplungsteiles 10 sichert.The receptacle in the bearing lever 3 consists of a slot 13 and a recess 9, the slot 13 receives an eye 20 of the coupling part 10 in a form-fitting manner. It secures the rotation of the coupling part 10, while the recess 9 secures the lateral position of the coupling part 10.

Im Vorrichtungsgestell 1 ist das Kupplungsteil 10 seitlich außen auf den Zapfen 8 der Traverse 12 aufgesteckt. Der Zapfen 11 ist an der Lagerplatte 14 befestigt und weist als zusätzliche Führung die Führungsrollen 15 auf, die sich auf Gegenflächen an dem Kupplungsteil 10 abstützen. Die Führungsrollen sichern auf diese Weise in abgekuppelter (abgestellter) Postion die Zusatzvorrichtung gegenüber Verdrehung aus ihrer Funktionsstellung (siehe Fig. 3).In the device frame 1, the coupling part 10 is attached laterally on the outside to the pin 8 of the cross member 12. The pin 11 is fastened to the bearing plate 14 and, as an additional guide, has the guide rollers 15, which are supported on counter surfaces on the coupling part 10. In this way, the guide rollers secure the additional device against rotation from its functional position in a uncoupled (parked) position (see FIG. 3).

Am Vorrichtungsgestell 1 befindet sich ferner ein eine axiale Hin- und Herbewegung bewirkender Antriebsmechanismus 22, 23, derart, daß das Vorrichtungsgestell 1 mit den Reibwalzen 18, 19 eine seitliche Hin- und Herbewegung ausführen kann. Zum Ausrücken des Kupplungsteiles 10 ist eine Schraube 17 vorgesehen, die in Richtung des Schlitzes 13 im Lagerhebel 3 angeordnet ist.On the device frame 1 there is also an axially reciprocating drive mechanism 22, 23, such that the device frame 1 with the friction rollers 18, 19 can perform a lateral reciprocating movement. To disengage the coupling part 10, a screw 17 is provided, which is arranged in the direction of the slot 13 in the bearing lever 3.

Der die axiale Hin- und Herbewegung bewirkende Antriebsmechanismus 22, 23 besteht im Ausführungsbeispiel aus Kurvenrollen 22, die an der unteren Traverse 21 des Vorrichtungsgestells 1 befestigt sind und beidseitig sich an Anlaufscheiben 23 des Feuchtreibers 6 abstützen, welcher wie üblich von der Druckmaschine seitlich changierend angetrieben ist.The drive mechanism 22, 23 which causes the axial back-and-forth movement consists in the exemplary embodiment of cam rollers 22 which are fastened to the lower crossmember 21 of the device frame 1 and are supported on both sides by thrust washers 23 of the dampening driver 6, which, as usual, is driven to oscillate laterally by the printing press is.

Die Zusatzvorrichtung ermöglicht es, zusätzliche Walzen (Tandemwalzen) mit seitlicher Verreibung auf einer Auftragwalze eines Feuchtwerks nachträglich bei Bogen-Offsetdruckmaschinen anzuordnen, um das Flüssigkeitsüberangebot infolge Kanalrückwirkungen auszugleichen.The additional device makes it possible to subsequently arrange additional rollers (tandem rollers) with lateral rubbing on an application roller of a dampening unit in sheet-fed offset printing machines in order to compensate for the excess liquid as a result of channel repercussions.

Bei Bedarf kann der Hub des Feuchtreibers 6 abgestellt werden, so daß dann die Reibwalzen 18, 19 als Reiterwalzen ohne axiale Verreibung wirken.If necessary, the stroke of the dampener 6 can be switched off, so that the friction rollers 18, 19 then act as rider rollers without axial friction.

Soll auch das unterschiedliche Farbprofil auf der Feuchtauftragwalze 7 verhindert werden, muß mindestens eine der Reibwalzen 18, 19 bzw. Reiterwalzen eine farbführende Oberfläche erhalten.If the different color profile on the dampening roller 7 is also to be prevented, at least one of the friction rollers 18, 19 or rider rollers must be given a color-guiding surface.

BezugszeichenlisteReference symbol list

11
VorrichtungsgestellFixture rack
22nd
PlattenzylinderPlate cylinder
33rd
LagerhebelBearing lever
44th
FeuchtduktorWet doctor
55
DosierwalzeDosing roller
66
FeuchtreiberDampener
77
FeuchtauftragwalzeDampening roller
88th
ZapfenCones
99
AusnehmungRecess
1010th
KupplungsteilCoupling part
1111
ZapfenCones
1212
Traversetraverse
1313
Schlitzslot
1414
LagerplatteBearing plate
1515
FührungsrolleLeadership role
1616
Führungenguides
1717th
Schraubescrew
1818th
ReibwalzeGrater
1919th
ReibwalzeGrater
2020th
Augeeye
2121
Traversetraverse
2222
Rollerole
2323
AnlaufscheibenThrust washers
2424th
Platteplate
2525th
Schraubescrew
2626
Schraubescrew
2727
ZapfenCones
2828
ZapfenCones
2929
Federfeather

Claims (4)

  1. Additional device for a damping unit of an offset printing press which has an applicator roller cooperating with a plate cylinder which is mounted in a bearing lever which is journaled on a spreading cylinder, which, on the one hand, lies against the applicator roller and on the other hand is connected with the damping agent feed, characterised in that a device frame (1) consisting of lateral bearing plates (14) and cross members (12, 21) connecting these together is provided, that in the bearing plates (14) are movably mounted a first spreader roller (18) and a second spreader roller (19) movable radially to the common applicator roller (7) under spring action, that the roller cover of the spreader rollers (18, 19) on the roller axles mounted rotatably can be driven by friction in the peripheral direction from the applicator roller, that furthermore the resilient contact pressure between the spreader rollers (18, 19) and the damping applicator roller (7) is generated by the own weight of the device frame, that on the device frame (1) there engages a drive mechanism (22, 23) effecting an axial to and fro movement, in such a fashion that the drive frame (1) with the spreader rollers (18, 19) carries out a lateral to and fro movement and that the device frame (1) on both sides by means of coupling parts (10) can be coupled to, coupled from or completely decoupled from a slot (13) of the bearing lever (3).
  2. Additional device according to Claim 1, characterised in that the distance between the bearing plates (14) in the bearing lever (3) is chosen greater than the maximum stroke (a) of the lateral to and fro movement of the distributor cylinder (6).
  3. Additional device according to Claim 1 and 2, characterised in that the coupling part (10) which can be pulled back by means of a bolt (17) in the direction of the slot (13) from the functional position or decoupled, wherein the coupling part (10) has an eye (20), which is guided secure against turning on guide surfaces of the slot (13) and the bearing lever (3) has apertures (9) in which the coupling part (10) is laterally stopped as well as pins (11) with guide rolls (15) being provided in the bearing plate (14), which are so supported in the coupling part (10) that in the slot off position, the device frame (1) is secured against rotation about the middle point of the cross member (12).
  4. Additional device according to Claim 1 - 3, characterised in that the drive mechanism (22, 23) effecting the axial to and fro movement consists of cam rolls (22) which are fixed to the lower cross member (21) and which are supported on both sides on running on discs (23) of the damping distributor (6).
EP90100476A 1989-03-13 1990-01-11 Supplementary device for a damping unit of an offset printing press Expired - Lifetime EP0387484B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90100476T ATE89511T1 (en) 1989-03-13 1990-01-11 ADDITIONAL DEVICE FOR A DAMPENING UNIT OF AN OFFSET PRINTING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3908045 1989-03-13
DE3908045A DE3908045C1 (en) 1989-03-13 1989-03-13

Publications (3)

Publication Number Publication Date
EP0387484A2 EP0387484A2 (en) 1990-09-19
EP0387484A3 EP0387484A3 (en) 1991-03-27
EP0387484B1 true EP0387484B1 (en) 1993-05-19

Family

ID=6376183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100476A Expired - Lifetime EP0387484B1 (en) 1989-03-13 1990-01-11 Supplementary device for a damping unit of an offset printing press

Country Status (7)

Country Link
US (1) US5005474A (en)
EP (1) EP0387484B1 (en)
JP (1) JPH02274538A (en)
AT (1) ATE89511T1 (en)
BR (1) BR9001154A (en)
DE (2) DE3908045C1 (en)
ES (1) ES2041449T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4171210B2 (en) * 2001-12-17 2008-10-22 株式会社小森コーポレーション Roller holding device for printing press

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE144155C (en) *
DD125553A1 (en) * 1976-03-29 1977-05-04
DE2649003C2 (en) * 1976-10-28 1982-12-23 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Device for setting up and stopping the rollers of a dampening unit for offset printing machines
US4130057A (en) * 1977-10-25 1978-12-19 Roland Offsetmaschinenfabrik Faber & Schleicher Ag. Dampening system for printing presses, particularly offset printing presses
IT1160413B (en) * 1978-12-28 1987-03-11 Cigardi Omc Sa PERFECTED WATER AND WATER-ALCOHOL BLENDING DEVICE, APPLICABLE ON OFFSET PRINTING MACHINES
DD144155B1 (en) * 1979-06-06 1988-04-27 Hans Johne WETTING WORK FOR ROTATION OFFSET PRINTING MACHINES
US4463674A (en) * 1982-06-01 1984-08-07 Becker Michael T Mounting means for a water unit to a printing press

Also Published As

Publication number Publication date
US5005474A (en) 1991-04-09
BR9001154A (en) 1991-03-19
DE3908045C1 (en) 1990-05-10
DE59001466D1 (en) 1993-06-24
JPH02274538A (en) 1990-11-08
EP0387484A2 (en) 1990-09-19
ES2041449T3 (en) 1993-11-16
ATE89511T1 (en) 1993-06-15
EP0387484A3 (en) 1991-03-27

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