DE3904285A1 - Device for engaging, disengaging and advancing the printing unit cylinders - Google Patents

Device for engaging, disengaging and advancing the printing unit cylinders

Info

Publication number
DE3904285A1
DE3904285A1 DE19893904285 DE3904285A DE3904285A1 DE 3904285 A1 DE3904285 A1 DE 3904285A1 DE 19893904285 DE19893904285 DE 19893904285 DE 3904285 A DE3904285 A DE 3904285A DE 3904285 A1 DE3904285 A1 DE 3904285A1
Authority
DE
Germany
Prior art keywords
cylinders
printing unit
disengaging
engaging
advancing
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.)
Withdrawn
Application number
DE19893904285
Other languages
German (de)
Inventor
Johannes Dipl Ing Naumann
Bernd Dietrich
Hans-Juergen Dr Ing Tappert
Holger Dipl Ing Bernhardt
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.)
KBA Planeta AG
Original Assignee
Kombinat Polygraph Werner Lamberz VEB
Polygraph Leipzig Kombinat Veb
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 Kombinat Polygraph Werner Lamberz VEB, Polygraph Leipzig Kombinat Veb filed Critical Kombinat Polygraph Werner Lamberz VEB
Publication of DE3904285A1 publication Critical patent/DE3904285A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/24Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34Cylinder lifting or adjusting devices
    • B41F13/40Cylinder lifting or adjusting devices fluid-pressure operated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)

Abstract

The invention relates to a device for engaging, disengaging and advancing the printing unit cylinders in offset printing machines, in which the printing unit cylinders are mounted in eccentric bushes which are rotated for the purpose of engaging, disengaging and advancing the printing unit cylinders by means of hydraulic operating cylinders on both sides of the machine. The object of the invention, to reliably guarantee synchronisation of the engaging, disengaging and advancing movements of the impression cylinders on both sides of the machine, is achieved according to the invention in that constantly adjustable directional valves, preferably proportional directional valves, which are controlled by position transducers arranged on the operating cylinders and by a reference value/actual value comparator, are assigned to the operating cylinders connected in parallel via lines. <IMAGE>

Description

Anwendungsgebiet der ErfindungField of application of the invention

Die Erfindung betrifft eine Vorrichtung zur An-, Ab- und Zustellung der Druckwerkszylinder in Offsetdruckmaschinen, bei denen die Druckwerkszylinder in Exzenterbuchsen gelagert sind, die zum Zwecke der An-, Ab- und Zustellung der Druckwerkszylinder durch hydraulische Arbeitszylinder auf beiden Maschinenseiten gedreht werden. The invention relates to a device for putting on and taking off Delivery of the printing unit cylinders in offset printing machines, where the printing unit cylinders in eccentric bushings are stored for the purpose of delivery, dispatch and delivery the printing unit cylinder by hydraulic working cylinders be turned on both sides of the machine.  

Charakteristik des bekannten Standes der TechnikCharacteristic of the known prior art

Es sind Vorrichtungen zum An- und Abstellen der Druckwerkszylinder in Offsetdruckmaschinen durch hydraulische Arbeitszylinder bekannt, bei denen die Synchronisierung der Bewegung der exzentrischen Zylinderlagerbuchsen der beiden Maschinenseiten durch eine durchgehende steife mechanische Welle erfolgt (DE-PS 19 40 075). Diese Lösung hat den Nachteil, daß die Synchronisierwelle in der Flugbahn des bedruckten Bogens angeordnet werden muß, wenn der Getriebeaufwand gering bleiben und der Synchronisiereffekt gut gestaltet werden soll. Das führt zum Abschmieren der Druckfarbe durch den Kontakt des Bogens mit diesen Querteilen der Druckmaschine. Eine Verlegung der mechanischen Welle aus der Flugbahn des Bogens erfordert eine Vielzahl von Getriebeelementen auf beiden Seiten der Druckmaschine, die infolge der unvermeidlichen Getriebespiele die Synchronisiergenauigkeit herabsetzen. Ungenügende Synchronisierung der Stellbewegungen der Zylinderlagerbuchsen führt zur Schiefstellung und Verkanten der Druckwerkszylinder und damit zu Maschinenschäden.There are devices for starting and stopping the Printing unit cylinders in offset printing machines hydraulic working cylinder known in which the Synchronize the movement of the eccentric Cylinder bearing bushes on both sides of the machine by one continuous rigid mechanical shaft takes place (DE-PS 19 40 075). This solution has the disadvantage that the Synchronizing shaft in the trajectory of the printed sheet must be arranged when the gearbox effort is low stay and the synchronization effect are well designed should. This leads to the ink smearing through the Contact of the sheet with these cross parts of the printing machine. Relocation of the mechanical shaft from the trajectory of the Arch requires a variety of gear elements both sides of the press, which are the result of inevitable gear play the synchronization accuracy belittle. Insufficient synchronization of the Adjusting movements of the cylinder bearing bushes leads to Skewing and tilting of the printing unit cylinders and thus damage to the machine.

Die bekannte Lösung hat außerdem den Nachteil, daß sie nicht die Möglichkeit der Zustellung der Druckwerkszylinder bietet und nicht selbstüberwachend ausgelegt ist.The known solution also has the disadvantage that it not the possibility of delivery of the Printing unit cylinder offers and not self-monitoring is designed.

Ziel der ErfindungAim of the invention

Ziel der Erfindung ist es, Qualitätsminderungen der bedruckten Bogen sowie Maschinenschäden zu vermeiden.The aim of the invention is to reduce the quality of the to avoid printed sheets and machine damage.

Darlegung des Wesens der ErfindungState the nature of the invention

Die Aufgabe der Erfindung besteht darin, eine fernbedien- und nachstellbare Vorrichtung zum An-, Ab- und Zustellen der Druckwerkszylinder in Offsetdruckmaschinen zu schaffen, die die Synchronisierung der An-, Ab- und Zustellbewegungen der Druckwerkszylinder auf beiden Maschinenseiten zuverlässig gewährleistet.The object of the invention is to provide a remote and adjustable device for starting, stopping and delivering to create the printing unit cylinder in offset printing machines, the synchronization of incoming, outgoing and incoming movements the printing unit cylinder on both sides of the machine reliably guaranteed.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß den über Leitungen parallelgeschalteten Arbeitszylindern von an den Arbeitszylindern angeordneten Wegmeßsystemen und einem Soll-Istwert-Vergleicher gesteuerte, stetig verstellbare Wegeventile, vorzugsweise Proportionalwegeventile zugeordnet sind.According to the invention the object is achieved in that the working cylinders connected in parallel via lines of measuring systems arranged on the working cylinders and a setpoint-actual value comparator, controlled continuously adjustable directional valves, preferably Proportional directional control valves are assigned.

AusführungsbeispielEmbodiment

Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden.The invention is intended in one Embodiment will be explained in more detail.

In der zugehörigen Zeichnung zeigtIn the accompanying drawing shows

Fig. 1: eine schematische Darstellung der Anordnung der Druckwerkszylinder, Fig. 1 is a schematic representation of the arrangement of the printing unit cylinder,

Fig. 2: einen Schaltplan der erfindungsgemäßen Vorrichtung. FIG. 2 shows a circuit diagram of the device according to the invention.

Das schematisch dargestellte Druckwerk 1 enthält den Druckzylinder 2, den Gummizylinder 3 und den Plattenzylinder 4. Der Gummizylinder 3 ist auf beiden Maschinenseiten in Exzenterlagern 5 gelagert, an denen hydraulische Arbeitszylinder 6 angelenkt sind, die den Gummizylinder 3 von dem Druckzylinder 2 und dem Plattenzylinder 4 abstellen. Die Arbeitszylinder 6.1 und 6.2, zweckmäßigerweise doppelwirkende Arbeitszylinder, werden über je ein stetig verstellbares Ventil 7 und 8, vorzugsweise Proportionalwegeventile, mit Druckmittel versorgt. Der Arbeitszylinder 6.1 ist über die Leitungen 17 und 18 mit dem Proportionalwegeventil 7 verbunden. Die Leitungen 19 und 20 verbinden das Proportionalwegeventil 8 mit dem Arbeitszylinder 6.2.The schematically illustrated printing unit 1 contains the impression cylinder 2 , the blanket cylinder 3 and the plate cylinder 4 . The rubber cylinder 3 is mounted on both sides of the machine in eccentric bearings 5 , to which hydraulic working cylinders 6 are articulated, which place the rubber cylinder 3 off the pressure cylinder 2 and the plate cylinder 4 . The working cylinders 6.1 and 6.2 , expediently double-acting working cylinders, are each supplied with pressure medium via a continuously adjustable valve 7 and 8 , preferably proportional directional control valves. The working cylinder 6.1 is connected via lines 17 and 18 to the proportional directional control valve 7 . The lines 19 and 20 connect the proportional directional control valve 8 to the working cylinder 6.2 .

Über die gemeinsame Druckleitung 9 sind die gemeinsame Ablaufleitung 10, die Arbeitszylinder 6.1 und 6.2 parallel geschaltet.The common discharge line 10 , the working cylinders 6.1 and 6.2 are connected in parallel via the common pressure line 9 .

An den beiden Arbeitszylindern 6.1 und 6.2 sind Wegmeßsysteme 11; 12 angebracht, die den Momentanwert des Kolbenhubes elektrisch erfassen. Beide Meßwertsysteme 11; 12 sind über Steuerleitungen 13; 14 mit einem (elektronischen) Soll-Istwert-Vergleicher 15 verbunden. In diesem Vergleicher 15 findet der Istwertvergleich der momentanen Kolbenhübe statt. Die Differenz beider Kolbenhübe entspricht dem Synchronlauffehler. Wird ein zu großer Synchronlauffehler festgestellt, werden ein oder beide Ventile 7; 8 so nachgeregelt, daß der Synchronlauffehler in die zulässigen Grenzen zurückfällt. Die Arbeitszylinder 6.1; 6.2 bleiben stehen, wenn die Istwerte der momentanen Kolbenhübe den über die Steuerleitung 16 vorgegebenen Sollwert erreicht haben. In diesem Moment schließen die beiden Ventile 7 und 8. Wird der Sollwert frei wählbar geschaltet, können beliebige Positionen der Arbeitskolben, beide jedoch immer im Synchronlauf, angefahren werden.On the two working cylinders 6.1 and 6.2 are measuring systems 11; 12 attached, which detect the instantaneous value of the piston stroke electrically. Both measurement systems 11; 12 are via control lines 13; 14 connected to an (electronic) target-actual value comparator 15 . The actual value comparison of the current piston strokes takes place in this comparator 15 . The difference between the two piston strokes corresponds to the synchronism error. If an excessive synchronism error is determined, one or both valves 7; 8 adjusted so that the synchronism error falls back into the permissible limits. The working cylinder 6.1; 6.2 stop when the actual values of the current piston strokes have reached the setpoint specified via the control line 16 . At this moment, the two valves 7 and 8 close. If the setpoint is switched freely selectable, any position of the working piston can be approached, but both always in synchronous operation.

Diese Vorrichtung ist im Prinzip auch zur An-, Ab- und Zustellung der Farb- und Feuchtwerkwalzen verwendbar.In principle, this device is also for putting on and taking off Delivery of the inking and dampening roller can be used.

Aufstellung der verwendeten BezugszeichenList of the reference numerals used

 1 Druckwerk
 2 Druckzylinder
 3 Gummizylinder
 4 Plattenzylinder
 5 Exzenterlager
 6 Arbeitszylinder
 6.1 Arbeitszylinder
 6.2 Arbeitszylinder
 7 Proportionalwegeventil
 8 Proportionalwegeventil
 9 Druckleitung
10 Ablaufleitung
11 Wegmeßsystem
12 Wegmeßsystem
13 Steuerleitung
14 Steuerleitung
15 Soll-Istwert-Vergleicher
16 Steuerleitung
17 Leitung
18 Leitung
19 Leitung
20 Leitung
1 printing unit
2 printing cylinders
3 rubber cylinders
4 plate cylinders
5 eccentric bearings
6 working cylinders
6.1 working cylinder
6.2 working cylinder
7 proportional directional control valve
8 proportional directional control valve
9 pressure line
10 drain pipe
11 position measuring system
12 position measuring system
13 control line
14 control line
15 target / actual value comparator
16 control line
17 line
18 management
19 management
20 line

Claims (2)

1. Vorrichtung zur An-, Ab- und Zustellung der Druckwerkszylinder in Offsetdruckmaschinen, wobei die Druckwerkszylinder in Exzenterbuchsen gelagert sind, die zum Zwecke der An-, Ab- und Zustellung der Druckwerkszylinder durch hydraulische Arbeitszylinder auf beiden Maschinenseiten gedreht werden, dadurch gekennzeichnet, daß über Leitungen (9; 10) parallelgeschalteten Arbeitszylindern (6.1; 6.2) von an den Arbeitszylindern (6.1; 6.2) angeordneten Wegmeßsystemen (11; 12) und einem Soll-Istwert-Vergleicher (15) gesteuerte, stetig verstellbare Wegeventile (7; 8) zugeordnet sind.1. Device for the on, off and delivery of the printing unit cylinders in offset printing presses, the printing unit cylinders being mounted in eccentric bushings which are rotated by hydraulic working cylinders on both sides of the machine for the purpose of supplying, removing and delivering the printing unit cylinders, characterized in that Working cylinders ( 6.1; 6.2 ) connected in parallel via lines ( 9; 10 ) from position measuring systems ( 11; 12 ) arranged on the working cylinders ( 6.1; 6.2 ) and a setpoint-actual value comparator ( 15 ) controlled, continuously adjustable directional valves ( 7; 8 ) assigned. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Ventile (7; 8) Proportionalwegeventile sind.2. Device according to claim 1, characterized in that the valves ( 7; 8 ) are proportional directional control valves.
DE19893904285 1988-03-03 1989-02-14 Device for engaging, disengaging and advancing the printing unit cylinders Withdrawn DE3904285A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD31333488A DD271084A1 (en) 1988-03-03 1988-03-03 DEVICE FOR MOUNTING, DELIVERY AND DELIVERY OF PRESSURE CYLINDERS

Publications (1)

Publication Number Publication Date
DE3904285A1 true DE3904285A1 (en) 1989-09-14

Family

ID=5597375

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893904285 Withdrawn DE3904285A1 (en) 1988-03-03 1989-02-14 Device for engaging, disengaging and advancing the printing unit cylinders

Country Status (2)

Country Link
DD (1) DD271084A1 (en)
DE (1) DE3904285A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453845A1 (en) * 1990-04-25 1991-10-30 MAN Roland Druckmaschinen AG Sheet-fed offset printing machine with at least one printing unit
DE102006024595A1 (en) * 2006-05-26 2007-11-29 Koenig & Bauer Aktiengesellschaft Printing machine has pair of rollers whose positions can be adjusted by hydraulic system, proximity switches near outer surfaces of rollers or pressure sensors on their bearings detecting their alignment
DE102007037327A1 (en) * 2007-08-08 2009-02-12 Heidelberger Druckmaschinen Ag Printing machine, uses proportional valve for control of working cylinder for adjusting printing-on and printing-off positions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453845A1 (en) * 1990-04-25 1991-10-30 MAN Roland Druckmaschinen AG Sheet-fed offset printing machine with at least one printing unit
DE102006024595A1 (en) * 2006-05-26 2007-11-29 Koenig & Bauer Aktiengesellschaft Printing machine has pair of rollers whose positions can be adjusted by hydraulic system, proximity switches near outer surfaces of rollers or pressure sensors on their bearings detecting their alignment
DE102006024595B4 (en) * 2006-05-26 2011-07-07 KOENIG & BAUER Aktiengesellschaft, 97080 Method for operating a sheet-fed printing machine
DE102007037327A1 (en) * 2007-08-08 2009-02-12 Heidelberger Druckmaschinen Ag Printing machine, uses proportional valve for control of working cylinder for adjusting printing-on and printing-off positions

Also Published As

Publication number Publication date
DD271084A1 (en) 1989-08-23

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: PLANETA DRUCKMASCHINENWERK AG, O-8122 RADEBEUL, DE

8127 New person/name/address of the applicant

Owner name: KBA-PLANETA AG, O-8122 RADEBEUL, DE

8139 Disposal/non-payment of the annual fee