EP0387486B1 - Driving mechanism for the axial movement of the first or both first and second rollers of a couple of rearrangeable roller in offset printing presses - Google Patents

Driving mechanism for the axial movement of the first or both first and second rollers of a couple of rearrangeable roller in offset printing presses Download PDF

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Publication number
EP0387486B1
EP0387486B1 EP90100483A EP90100483A EP0387486B1 EP 0387486 B1 EP0387486 B1 EP 0387486B1 EP 90100483 A EP90100483 A EP 90100483A EP 90100483 A EP90100483 A EP 90100483A EP 0387486 B1 EP0387486 B1 EP 0387486B1
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EP
European Patent Office
Prior art keywords
roller
lever
spindle
rollers
cylinder
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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
EP90100483A
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German (de)
French (fr)
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EP0387486A3 (en
EP0387486A2 (en
Inventor
Roland Höll
Herbert Rebel
Peter Hummel
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Manroland AG
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MAN Roland Druckmaschinen AG
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Priority to AT90100483T priority Critical patent/ATE96091T1/en
Publication of EP0387486A2 publication Critical patent/EP0387486A2/en
Publication of EP0387486A3 publication Critical patent/EP0387486A3/en
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Publication of EP0387486B1 publication Critical patent/EP0387486B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/15—Devices for moving vibrator-rollers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/38—Means for axially reciprocating inking rollers

Definitions

  • the invention relates to a drive mechanism on offset printing machines for axially reciprocating the first or the first and second rollers of a pair of rollers of a combined dampening and inking unit.
  • the object of the invention is to make it possible that only the first roller works as a friction roller during the first adjustment of the two rollers as connecting rollers between the dampening and inking units, while in the second setting when the rollers on the applicator roller of the dampening unit laterally rest against each other, both rollers work as friction rollers and that the drive mechanism for the axial reciprocation can be derived from the ink rubbing cylinder in a stroke.
  • the advantage of the invention consists in an optimally effective rubbing performance in the nip points of the two rollers, depending on the setting.
  • the device comprises a plate cylinder 1 which is supported by means of pins at both ends in side walls 32 of the printing press.
  • the pins are driven in a known manner, not shown in detail, by gearwheels arranged outside the side walls 32 from the main drive of the machine.
  • a water box is provided for supplying the dampening liquid, in which a water box roller 5 is partially immersed. The strength of the dampening liquid is adjusted by means of a metering roller 6.
  • the drawn film dampening unit 2, 5, 6 thus guides the dampening liquid directly onto the pressure plate of the plate cylinder 1 and in a very short way, so that the dampening solution evaporation is kept low.
  • the drive of the dampening unit rollers and also of the inking unit rollers is known and will not be explained in more detail. All dampening unit rollers 2, 5, 6 and the rollers 3, 4 between dampening unit and inking unit can be adjusted to one another, this being done in a known manner e.g. by mounting the rollers on adjustable eccentric bushings, by arranging adjusting screws, by attaching springs or by mutually tightening the bearing levers of the rollers.
  • a first bearing lever 10 which can be pivoted about the center of the ink rubbing cylinder 8 and is supported axially, for example, on the side walls 32, is mounted on both sides.
  • first bearing lever 10 Inside next to the first bearing lever 10 is supported on both sides on the pin of the ink cylinder 8 also in the axial direction around its center pivoted second bearing lever 11 is mounted, which receives the thru axle 12 of the second roller 4 of the two rollers 3, 4 in a bearing position open on one side by means of a roller lock 15.
  • a section 21 of the thru axle 12 in the region of the bearing point serves as the roller lock 15, which is flattened with two edges and can be inserted into the bearing point through a slot 19.
  • a swivel lever 9 is articulated on both sides in the vicinity of the end faces of the first roller 3 on a coaxial section of the plug-in axis 13 of the first roller 3 on a bushing 17, which additionally has the upper roller 4 at the upper end in a bearing position open on one side by means of a roller lock 14 records.
  • a section 20 of the thru axle 12 in the region of the bearing point serves as the roller lock 14, which is flattened with two edges and can be inserted into the bearing point through a slot 18.
  • Both slots 18, 19 and the flattened sections 20, 21 are angularly offset, so that the plug-in axis 12 remains locked in the pivot lever 9 when unlocking from the bearing lever 11, so that the second roller 4 is convertible and only in the changed position by rotating the Thru axis 12 'unlocked after loosening a pressure piece 31' and can thus be removed.
  • the pressure piece 31 fixes the pivot lever 9 on the thru axle 12 when the roller lock 15 is actuated.
  • a pin 29 with the thru-axle 12 is provided with the adjusting bore 30 between the levers 9 and 11 so that the axial position of the levers in the first position with connected inking and dampening units 10, 11 is firmly fixed relative to the side walls 32 of the printing press.
  • the roller lock 15 is opened by rotating the thru axle 12 by approximately 90 °, so that the second roller 4 is unlocked.
  • the swivel lever 9 has guide means 16, 17 in the form of the coaxial socket 17 on a portion of the thru-axle 13 and an elongated hole 16, the position of which is selected so that when rollers 3, 4 touch, the upper contact surface of the elongated hole 16 rests on the socket 17.
  • the bushing 17, as a spacer or securing bushing secures the inner rings of the rolling bearings of the first roller 3, which are schematically indicated with a cross in the drawing, in the axial direction on the thru axle 12. Accordingly, the rolling bearings of the second roller 4 are fixed in the axial direction by locking rings 22 .
  • the slot guide 16, 17 enables the second roller 4 to be moved by hand or, if appropriate, using suitable adjusting means (not shown in the drawing) from the first position, in contact with the roller 3 and the first inking cylinder for ink dampening switch to a second position, in which the second roller 4 'as a rider (tandem roller) with roller separation of the rollers 3, 4 lowered from the first roller 3 together with this side of the applicator roller 2 of the dampening unit.
  • the drive mechanism for axially reciprocating the first or the first and second rollers of the roller pair 3, 4 of a combined dampening and inking unit can be seen in FIGS. 3 to 6.
  • the first bearing lever 10 receives the thru axle 13 of the intermediate roller 3 on both sides in a bearing position open on one side by means of a roller lock 26 with a ball sleeve 34.
  • a roller 27 with an integrated spherical sleeve 34 serves as the roller lock 26, which can be inserted through the slot 13 carrying the roller 3 through a slot 28 into the bearing point of the first bearing lever 10 which is open on one side.
  • By turning the driver 27 is secured in the bearing.
  • the roller shell of the first roller 3 is rotatably received on the thru-axle 13 via roller bearings.
  • the swivel lever 9 has a narrow web 25 and a much wider web 24 in the direction of the second roller 4.
  • the narrow web 25 is Y-thick, while the wide web 24 is X-thick according to the drawing.
  • the coupling parts 23 have a long section A and a short section B with respect to the center of the thru axle 13, such that in the connecting position of the second roller 4 between the dampening and inking units, the narrow web 25 of the pivot lever 9 between the coupling parts 23 in the latter Section B comes to rest, and in the changed tandem roller position of the second roller 4 'on the applicator roller 2 of the dampening unit separated from the inking unit, the wide web 24 fits exactly between the coupling parts 23 in which section A comes to rest.
  • the first inking cylinder 8 is driven in the axial direction in a known manner via the drive tube 38, drive lever 40 and drive roller 39, which runs in the link 37.
  • the kinematic chain consisting of two distribution couplers 36, 47 consists of a pivotable roller lever 36 and an axially displaceable push rod 47.
  • the roller lever 36 slides in a wide slot 44 in the gearbox housing 41 of the dampening unit around a bolt 42.
  • the roller lever 36 has one end a driving roller 35, which is guided in the link 37 on the ink cylinder 8, while the other end of the pivotable roller lever 36 is pivotally supported by means of the bolt 42 on the gear housing 41 is.
  • a push rod 47 is articulated via a first driver connection 43, 45, 46, 48, which is guided in the direction of the plug-in axis 13 of the first roller 3 through the side walls 32 axially displaceably via ball sleeve 52 and via a second driver connection 49, 50 , 51 is articulated at the beginning of the thru axle 13.
  • the first driver connection 43, 45, 46, 48 has on the driver 43 a bolt-shaped part 46 which is rotatably mounted in the roller lever 36 and a prismatic part 48 which is slidably guided in a slot 45 of the push rod 47.
  • the second driver connection 49, 50, 51 has a prismatic part 51 on the second driver 49, which is slidably guided in a transverse slot 50 of the plug axis 13.
  • the distance b0 of the fulcrum of the bolt-shaped part 46 of the first driver 43 has been selected in the pivotable roller lever 36 to the fulcrum of the bolt 42 in accordance with the intended reduction gear ratio a0.
  • the difference in the thickness Y of the narrow web 25 from the thickness X of the wide web 24 of the pivot lever 9 is chosen to be somewhat smaller than twice the stroke a0 of the thru axle 13 of the first roller 3, while the distance between the coupling surfaces of the two coupling parts 23 corresponds to that Thickness X of the wide web 24 of the pivot lever 9 is selected.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Friction Gearing (AREA)

Abstract

In order to provide a drive mechanism for the axial reciprocating movement of a first or a first and second roller of a pair of rollers which can be assigned optionally to the first ink grinding cylinder of an inking unit or the last application roller of a damping unit of a combined damping and inking unit, a lifting coupling of the full floating axle (13) of the first roller (3) with the first ink grinding cylinder (8) is provided. Said lifting coupling is passed onto the full floating axle (12') of the second roller (4') only when the rollers (3, 4') rest jointly on the forme damping roller, while, in the connecting position of the second roller (4) between the damping and inking unit, its full floating axle (12) is fixed axially and is separate from the lifting coupling. <IMAGE>

Description

Die Erfindung betrifft eine Antriebsmechanismus an Offsetdruckmascninen zum axialen Hin- und Herbewegen der ersten oder der ersten und zweiten Walze eines Walzenpaares eines kombinierten Feucht- und Farbwerkes.The invention relates to a drive mechanism on offset printing machines for axially reciprocating the first or the first and second rollers of a pair of rollers of a combined dampening and inking unit.

Mit einer ersten Einstellung zweier Walzen als Verbindungswalzen zwischen Feucht- und Farbwerk besitzt eine solche Vorrichtung vier Spaltstellen zur ersten Farbauftragwalze, wobei die zweite Walze als Speicher- und Glättwalze am ersten Farbreibzylinder wirkt. Mit einer zweiten Einstellung bei gemeinsam an der Auftragwalze des Feuchtwerkes seitlich anliegenden Walzen kann infolge Feucht- und Farbwerkstrennung durch die zwei Reiterwalzen auf der Auftragwalze des Feuchtwerkes Schablonieren infolge Kanalrückwirkungen des Plattenzylinders bekämpft werden. Mit einer dritten Walze in die Lagerstelle der zweiten Walzen eingelegt, ist ohne die Funktion der beiden Walzen zu beeinträchtigen zugleich wieder eine Farb-Feuchtwerksverbindung hergestellt. Letztere Einstellung ermöglicht durch drei zusammenwirkende Walzen eine sehr schnelle Herstellung des Farb-Feuchtmittelgleichgewichtes und ist zugleich hochwirksam gegen Schablonieren sowohl in Farb-als auch im Feuchtwerk.With a first setting of two rollers as connecting rollers between the dampening and inking units, such a device has four nip points to the first inking roller, the second roller acting as a storage and smoothing roller on the first inking cylinder. With a second setting when the rollers are on the side of the dampening unit's applicator roller, stenciling due to channel repercussions of the plate cylinder can be combatted by the two rider rollers on the dampening unit's applicator roller due to dampening and inking unit separation. Inserted with a third roller in the bearing of the second rollers, without affecting the function of the two rollers, a paint / dampening unit connection is again established. The latter setting enables the ink-fountain solution balance to be established very quickly thanks to three interacting rollers and is at the same time highly effective against stenciling in both inking and dampening systems.

Aufgabe der Erfindung ist es zu ermöglichen, daß bei der ersten Einstellung der beiden Walzen als Verbindungswalzen zwischen Feucht- und Farbwerk nur die erste Walze als Reibwalze arbeitet, während in der zweiten Einstellung bei gemeinsam an der Auftragwalze des Feuchtwerkes seitlich anliegenden Walzen beide Walzen als Reibwalzen arbeiten und daß der Antriebsmechanismus zur axialen Hin- und Herbewegung vom Farbreibzylinder im Hub untersetzt abgeleitet werden kann.The object of the invention is to make it possible that only the first roller works as a friction roller during the first adjustment of the two rollers as connecting rollers between the dampening and inking units, while in the second setting when the rollers on the applicator roller of the dampening unit laterally rest against each other, both rollers work as friction rollers and that the drive mechanism for the axial reciprocation can be derived from the ink rubbing cylinder in a stroke.

Der Vorteil der Erfindung besteht in einer optimal wirksamen Verreibungsleistung in den je nach Einstellung vorhandenen Spaltstellen der beiden Walzen. Durch Ableiten der axialen Hin- und Herbewegung vom Farbwerks-Changierantrieb werden Störungen ausgeschlossen, die ein separater Changierantrieb für die beiden Walzen mit sich bringen würde.The advantage of the invention consists in an optimally effective rubbing performance in the nip points of the two rollers, depending on the setting. By deriving the axial reciprocating movement from the inking unit traversing drive, faults are excluded which would be caused by a separate traversing drive for the two rollers.

Nachstehend wird die Erfindung anhand einer Zeichnung in einem Ausführungsbeispiel erläutert.The invention is explained below with reference to a drawing in an exemplary embodiment.

Es zeigt:

Fig. 1
die Seitenansicht auf den Verreibungsantrieb eines Feucht- und Farbwerkes, schematisch,
Fig. 2
eine Seitenansicht auf das kombinierte Feucht-und Farbwerk mit den Lagerhebeln für die umstellbaren und seitlich changierend antreibbaren Walzen,
Fig. 3
die Seitenansicht auf die Hubkopplung der ersten Walze mit dem Verreibungsantrieb des Farbreibzylinders,
Fig. 4
die Ansicht aus Richtung X nach Fig. 3 auf das Getriebegehäuse des Feuchtwerkes,
Fig. 5
einen Ausschnitt des oberen Teiles des Getriebegehäuses des Feuchtwerkes mit Teilen der Hubkopplung zwischen Farbreibzylinder und erster Walze,
Fig. 6
eine Draufsicht auf das kombinierte Feucht- und Farbwerk nach Fig. 2 mit Teilen der Hubkopplung der ersten oder ersten und zweiten Walze zum ersten Farbreibzylinder, teilweise im Schnitt.
It shows:
Fig. 1
the side view of the friction drive of a dampening and inking unit, schematically,
Fig. 2
a side view of the combined dampening and inking unit with the bearing levers for the convertible and laterally changeable drivable rollers,
Fig. 3
the side view of the stroke coupling of the first roller with the friction drive of the ink rubbing cylinder,
Fig. 4
3 on the gearbox of the dampening unit,
Fig. 5
a section of the upper part of the gear housing of the dampening unit with parts of the stroke coupling between the inking cylinder and the first roller,
Fig. 6
a plan view of the combined dampening and inking unit according to FIG. 2 with parts of the stroke coupling of the first or first and second roller to the first inking cylinder, partly in section.

Die Vorrichtung umfaßt gemäß Fig. 1, 2 und 6 einen Plattenzylinder 1, der mittels Zapfen an beiden Enden in Seitenwänden 32 der Druckmaschine gelagert ist. Die Zapfen sind in bekannter, nicht näher dargestellten Weise durch außerhalb der Seitenwände 32 angeordnete Zahnräder vom Hauptantrieb der Maschine aus angetrieben. Zur Zufuhr der Feuchtflüssigkeit ist ein Wasserkasten vorgesehen, in dem eine Wasserkastenwalze 5 teilweise eintaucht. Die Stärke der Feuchtflüssigkeit wird mittels einer Dosierwalze 6 eingestellt.1, 2 and 6, the device comprises a plate cylinder 1 which is supported by means of pins at both ends in side walls 32 of the printing press. The pins are driven in a known manner, not shown in detail, by gearwheels arranged outside the side walls 32 from the main drive of the machine. A water box is provided for supplying the dampening liquid, in which a water box roller 5 is partially immersed. The strength of the dampening liquid is adjusted by means of a metering roller 6.

Das gezeichnete Film-Feuchtwerk 2, 5, 6 führt somit die Feuchtflüssigkeit direkt auf die Druckplatte des Plattenzylinders 1 und zwar auf einem sehr kurzen Weg, so daß die Feuchtmittelverdunstung gering gehalten ist. Antrieb der Feuchtwerkswalzen bzw. auch der Farbwerkswalzen ist bekannt und wird nicht näher erläutert. Alle Feuchtwerkswalzen 2, 5, 6 und die Walzen 3, 4 zwischen Feuchtwerk und Farbwerk sind zueinander einstellbar, wobei dies in bekannter Weise z.B. durch Lagerung der Walzen auf verstellbaren Exzenterbuchsen, durch Anordnung von Stellschrauben, durch Anbringen von Federn bzw. durch gegenseitiges Verspannen der Lagerhebel der Walzen erfolgen kann.The drawn film dampening unit 2, 5, 6 thus guides the dampening liquid directly onto the pressure plate of the plate cylinder 1 and in a very short way, so that the dampening solution evaporation is kept low. The drive of the dampening unit rollers and also of the inking unit rollers is known and will not be explained in more detail. All dampening unit rollers 2, 5, 6 and the rollers 3, 4 between dampening unit and inking unit can be adjusted to one another, this being done in a known manner e.g. by mounting the rollers on adjustable eccentric bushings, by arranging adjusting screws, by attaching springs or by mutually tightening the bearing levers of the rollers.

Gleiches gilt für die erforderliche Druckabstellung bzw. die Nachtabstellung der Walzen durch geeignete Stellmittel zur Walzentrennung.The same applies to the required pressure shutdown or the night shutdown of the rollers by means of suitable adjusting means for roller separation.

Auf dem Zapfen des im Plattenzylinderdrehrichtung gesehenen ersten Farbreibzylinders 8 ist beidseitig ein um den Mittelpunkt des Farbreibzylinders 8 verschwenkbarer, axial z.B. an den Seitenwänden 32 abgestützter erster Lagerhebel 10 gelagert. Innen neben dem ersten Lagerhebel 10 ist beidseitig auf den Zapfen des Farbreibzylinders 8 ebenfalls in axialer Richtung abgestützt ein um dessen Mittelpunkt verschwenkbarer zweiter Lagerhebel 11 gelagert, der die Steckachse 12 der zweiten Walze 4 der beiden Walzen 3, 4 in einer einseitig offenen Lagerstelle mittels eines Walzenschlosses 15 aufnimmt. Als Walzenschloß 15 dient ein Abschnitt 21 der Steckachse 12 im Bereich dar Lagerstelle, der zweikantig abgeflacht ist und durch einen Schlitz 19 in die Lagerstelle eingelegt werden kann. Durch Drehen wird die Steckachse 12 und somit die zweite Walze 4 in der Lagerstelle gesichert. Der Walzenmantel der zweiten Walze 4 ist über Wälzlager auf der Steckachse 12 drehbar aufgenommen.On the pin of the first ink rubbing cylinder 8 seen in the direction of rotation of the plate cylinder, a first bearing lever 10, which can be pivoted about the center of the ink rubbing cylinder 8 and is supported axially, for example, on the side walls 32, is mounted on both sides. Inside next to the first bearing lever 10 is supported on both sides on the pin of the ink cylinder 8 also in the axial direction around its center pivoted second bearing lever 11 is mounted, which receives the thru axle 12 of the second roller 4 of the two rollers 3, 4 in a bearing position open on one side by means of a roller lock 15. A section 21 of the thru axle 12 in the region of the bearing point serves as the roller lock 15, which is flattened with two edges and can be inserted into the bearing point through a slot 19. By turning the thru axle 12 and thus the second roller 4 is secured in the bearing. The roll shell of the second roll 4 is rotatably received on the axle 12 via rolling bearings.

Außerdem ist beidseitig in der Nähe der Stirnseiten der ersten Walze 3 auf einem koaxialen Abschnitt der Steckachse 13 der ersten Walze 3 auf einer Buchse 17 ein Schwenkhebel 9 angelenkt, welcher am oberen Ende in einer einseitig offenen Lagerstelle mittels eines Walzenschlosses 14 die obere Walze 4 zusätzlich aufnimmt. Als Walzenschloß 14 dient ein Abschnitt 20 der Steckachse 12 im Bereich der Lagerstelle, der zweikantig abgeflacht ist und durch einen Schlitz 18 in die Lagerstelle eingelegt werden kann. Beide Schlitze 18, 19 und die abgeflachten Abschnitte 20, 21 sind winkelversetzt, so daß die Steckachse 12 beim Entriegeln aus dem Lagerhebel 11 weiterhin im Schwenkhebel 9 verriegelt bleibt, so daß die zweite Walze 4 umstellbar ist und erst in der umgestellten Position durch Drehen der Steckachse 12′ nach Lösen eines Druckstückes 31′ entriegelt und somit entnommen werden kann. Das Druckstück 31 fixiert den Schwenkhebel 9 auf der Steckachse 12, wenn das Walzenschloß 15 betätigt wird.In addition, a swivel lever 9 is articulated on both sides in the vicinity of the end faces of the first roller 3 on a coaxial section of the plug-in axis 13 of the first roller 3 on a bushing 17, which additionally has the upper roller 4 at the upper end in a bearing position open on one side by means of a roller lock 14 records. A section 20 of the thru axle 12 in the region of the bearing point serves as the roller lock 14, which is flattened with two edges and can be inserted into the bearing point through a slot 18. Both slots 18, 19 and the flattened sections 20, 21 are angularly offset, so that the plug-in axis 12 remains locked in the pivot lever 9 when unlocking from the bearing lever 11, so that the second roller 4 is convertible and only in the changed position by rotating the Thru axis 12 'unlocked after loosening a pressure piece 31' and can thus be removed. The pressure piece 31 fixes the pivot lever 9 on the thru axle 12 when the roller lock 15 is actuated.

Als Stellmittel zum Verdrehen, d.h. zum Ver- und Entriegeln der Steckachse 12 der zweiten Walze 4, ist ein mit der Steckachse 12 verstifteter Stellring 29 mit Stellbohrung 30 so zwischen den Hebeln 9 und 11 vorgesehen, daß in der ersten Stellung bei verbundenem Farb- und Feuchtwerk die axiale Position der Hebel 10, 11 gegenüber den Seitenwänden 32 der Druckmaschine fest fixiert ist.As a means of turning, i.e. to lock and unlock the thru-axle 12 of the second roller 4, a pin 29 with the thru-axle 12 is provided with the adjusting bore 30 between the levers 9 and 11 so that the axial position of the levers in the first position with connected inking and dampening units 10, 11 is firmly fixed relative to the side walls 32 of the printing press.

Zur Umstellung der zweiten Walze 4, d.h. zur Farb- und Feuchtwerkstrennung wird das Walzenschloß 15 durch Drehen der Steckachse 12 um ca. 90° geöffent, so daß die zweite Walze 4 entriegelt ist. Der Schwenkhebel 9 weist Führungsmittel 16, 17 in Form der koaxialen Buchse 17 auf einem Abschnitt der Steckachse 13 sowie ein Langloch 16 auf, dessen Lage so gewählt ist, daß bei sich berührenden Walzen 3, 4 die obere Anlagefläche des Langloches 16 auf der Buchse 17 aufsitzt. Zuglech sichert die Buchse 17 als Distanz- bzw. Sicherungsbuchse die mit einem Kreuz in der Zeichnung schematisch angedeuteten Innenringe der Wälzlager der ersten Walze 3 in axialer Richtung auf der Steckachse 12. Entsprechend werden die Wälzlager der zweiten Walze 4 in axialer Richtung durch Sicherungsringe 22 fixiert.To convert the second roller 4, ie for ink and dampening system separation, the roller lock 15 is opened by rotating the thru axle 12 by approximately 90 °, so that the second roller 4 is unlocked. The swivel lever 9 has guide means 16, 17 in the form of the coaxial socket 17 on a portion of the thru-axle 13 and an elongated hole 16, the position of which is selected so that when rollers 3, 4 touch, the upper contact surface of the elongated hole 16 rests on the socket 17. To this end, the bushing 17, as a spacer or securing bushing, secures the inner rings of the rolling bearings of the first roller 3, which are schematically indicated with a cross in the drawing, in the axial direction on the thru axle 12. Accordingly, the rolling bearings of the second roller 4 are fixed in the axial direction by locking rings 22 .

Durch die Langloch-Buchsenführung 16, 17 ist es möglich von Hand oder auch gegebenenfalls über geeignete, in der Zeichnung nicht dargestellte Stellmittel die zweite Walze 4 von der ersten Position, in der Kontakt mit der Walze 3 und dem ersten Farbreibzylinder besteht zur Farb-Feuchtwerkstrennung in eine zweite Position umzustellen, in der die zweite Walze 4′ als Überreiter (Tandemwalze) unter Walzentrennung der Walzen 3, 4 von der ersten Walze 3 abgesenkt gemeinsam mit dieser seitlich an die Auftragwalze 2 des Feuchtwerkes angestellt ist.The slot guide 16, 17 enables the second roller 4 to be moved by hand or, if appropriate, using suitable adjusting means (not shown in the drawing) from the first position, in contact with the roller 3 and the first inking cylinder for ink dampening switch to a second position, in which the second roller 4 'as a rider (tandem roller) with roller separation of the rollers 3, 4 lowered from the first roller 3 together with this side of the applicator roller 2 of the dampening unit.

Die Bezugszeichen der Teile in der Zeichnung in der zweiten Stellung der zweiten Walze 4′ sind jeweils mit dem ′-Index oben versehen worden.The reference numerals of the parts in the drawing in the second position of the second roller 4 'have each been provided with the' index above.

Der Antriebsmechanismus zum axialen Hin- und Herbewegen der ersten oder der ersten und zweiten Walzen des Walzenpaares 3, 4 eines kombinierten Feucht- und Farbwerkes ist den Fig. 3 bis 6 zu entnehmen.The drive mechanism for axially reciprocating the first or the first and second rollers of the roller pair 3, 4 of a combined dampening and inking unit can be seen in FIGS. 3 to 6.

Der erste Lagerhebel 10 nimmt beidseitig die Steckachse 13 der Zwischenwalze 3 in einer einseitig offenen Lagerstelle mittels eines Walzenschlosses 26 mit Kugelhülse 34 auf. Als Walzenschloß 26 dient ein Mitnehmer 27 mit integrierter Kugelhülse 34, der mit der die Walze 3 tragende Steckachse 13 durch einen Schlitz 28 in die einseitig offene Lagerstelle der ersten Lagerhebels 10 eingelegt werden kann. Durch Drehen wird der Mitnehmer 27 in der Lagerstelle gesichert. Auf der Steckachse 13 ist über Wälzlager der Walzenmantel der ersten Walze 3 drehbar aufgenommen. Der Schwenkhebel 9 weist einen schmalen Steg 25 auf, sowie in Richtung der zweiten Walze 4 einen wesentlich breiteren Steg 24. Der schmale Steg 25 ist Y-dick gewählt, während der breite Steg 24 gemäß Zeichnung X-dick gewählt ist.The first bearing lever 10 receives the thru axle 13 of the intermediate roller 3 on both sides in a bearing position open on one side by means of a roller lock 26 with a ball sleeve 34. A roller 27 with an integrated spherical sleeve 34 serves as the roller lock 26, which can be inserted through the slot 13 carrying the roller 3 through a slot 28 into the bearing point of the first bearing lever 10 which is open on one side. By turning the driver 27 is secured in the bearing. The roller shell of the first roller 3 is rotatably received on the thru-axle 13 via roller bearings. The swivel lever 9 has a narrow web 25 and a much wider web 24 in the direction of the second roller 4. The narrow web 25 is Y-thick, while the wide web 24 is X-thick according to the drawing.

Im Schwenkbereich des Schwenkhebels 9 sind mit der Steckachse 13 der ersten Walze 3 zwei Kupplungsteile 23 in einem Abstand voneinander verstiftet, welcher die Größe des X breiten Steges 24 des Schwenkhebels 9 aufweist. Die Kupplungsteile 23 weisen bezogen auf den Mittelpunkt der Steckachse 13 einen langen Abschnitt A und einen kurzen Abschnitt B auf, derart, daß in der Verbindungsposition der zweiten Walze 4 zwischen Feucht- und Farbwerk der schmale Steg 25 des Schwenkhebels 9 zwischen die Kupplungsteile 23 in deren Abschnitt B zu liegen kommt, sowie in der umgestellten Tandemwalzenposition der zweiten Walze 4′ auf der Auftragswalze 2 des Feuchtwerkes getrennt vom Farbwerk der breite Steg 24 genau passend zwischen die Kupplungsteile 23 in deren Abschnitt A zu liegen kommt.In the swivel range of the swivel lever 9, two coupling parts 23 are pinned at a distance from one another with the plug-in axis 13 of the first roller 3, which has the size of the X-wide web 24 of the swivel lever 9. The coupling parts 23 have a long section A and a short section B with respect to the center of the thru axle 13, such that in the connecting position of the second roller 4 between the dampening and inking units, the narrow web 25 of the pivot lever 9 between the coupling parts 23 in the latter Section B comes to rest, and in the changed tandem roller position of the second roller 4 'on the applicator roller 2 of the dampening unit separated from the inking unit, the wide web 24 fits exactly between the coupling parts 23 in which section A comes to rest.

Über eine kinematische Kette von zwei den axialen Hub des Farbreibzylinders 8 auf einen vorbestimmten Hub (a₀) der Steckachse 13 der ersten Walze 3 untersetzenden Verreibkoppeln 36, 47 ist eine Hubkopplung der Steckachse 13 der ersten Walze 3 mit dem ersten Farbreibzylinder 8 erreicht.Via a kinematic chain of two distributing couplers 36, 47, which reduce the axial stroke of the color friction cylinder 8 to a predetermined stroke (a₀) of the plug-in axis 13 of the first roller 3, a stroke coupling of the plug-in axis 13 of the first roller 3 with the first color friction cylinder 8 is achieved.

Der erste Farbreibzylinder 8 wird in axialer Richtung in bekannter Weise über Antriebsrohr 38, Antriebshebel 40 und Antriebsrolle 39 angetrieben, welche in der Kulisse 37 läuft. Die kinematische Kette aus zwei Verreibkoppeln 36, 47 besteht aus einem verschwenkbaren Rollenhebel 36 und einer axial verschiebbaren Schubstange 47. Der Rollenhebel 36 gleitet dabei in einem breiten Schlitz 44 des Getriebegehäuses 41 des Feuchtwerkes um einen Bolzen 42. Der Rollenhebel 36 weist an seinem einen Ende eine Mitnehmerrolle 35 auf, die in der Kulisse 37 am Farbreibzylinder 8 geführt ist, während das andere Ende des verschwenkbaren Rollenhebels 36 mittels des Bolzens 42 gelenkig am Getriebegehäuse 41 drehbar abgestützt ist. Am verschwenkbaren Rollenhebel 36 ist über eine erste Mitnehmerverbindung 43, 45, 46, 48 eine Schubstange 47 angelenkt, die in Richtung der Steckachse 13 der ersten Walze 3 durch die Seitenwände 32 axial über Kugelhülse 52 verschiebbar geführt ist und über eine zweite Mitnehmerverbindung 49, 50, 51 am Anfang der Steckachse 13 angelenkt ist. Die erste Mitnehmerverbindung 43, 45, 46, 48 weist am Mitnehmer 43 ein bolzenförmiges Teil 46 auf, das im Rollenhebel 36 drehbar gelagert ist und einen prismatischen Teil 48 auf, das in einem Schlitz 45 der Schubstange 47 gleitend geführt ist. Die zweite Mitnehmerverbindung 49, 50, 51 weist ein prismatisches Teil 51 am zweiten Mitnehmer 49 auf, das in einem Querschlitz 50 der Steckachse 13 gleitend geführt ist.The first inking cylinder 8 is driven in the axial direction in a known manner via the drive tube 38, drive lever 40 and drive roller 39, which runs in the link 37. The kinematic chain consisting of two distribution couplers 36, 47 consists of a pivotable roller lever 36 and an axially displaceable push rod 47. The roller lever 36 slides in a wide slot 44 in the gearbox housing 41 of the dampening unit around a bolt 42. The roller lever 36 has one end a driving roller 35, which is guided in the link 37 on the ink cylinder 8, while the other end of the pivotable roller lever 36 is pivotally supported by means of the bolt 42 on the gear housing 41 is. On the pivotable roller lever 36, a push rod 47 is articulated via a first driver connection 43, 45, 46, 48, which is guided in the direction of the plug-in axis 13 of the first roller 3 through the side walls 32 axially displaceably via ball sleeve 52 and via a second driver connection 49, 50 , 51 is articulated at the beginning of the thru axle 13. The first driver connection 43, 45, 46, 48 has on the driver 43 a bolt-shaped part 46 which is rotatably mounted in the roller lever 36 and a prismatic part 48 which is slidably guided in a slot 45 of the push rod 47. The second driver connection 49, 50, 51 has a prismatic part 51 on the second driver 49, which is slidably guided in a transverse slot 50 of the plug axis 13.

Der Abstand b₀ des Drehpunktes des bolzenförmigen Teiles 46 des ersten Mitnehmers 43 ist im verschwenkbaren Rollenhebel 36 zum Drehpunkt des Bolzens 42 entsprechend der vorgesehenen Hubuntersetzung a₀ gewählt worden. Außerdem ist die Differenz der Dicke Y des schmalen Steges 25 von der Dicke X des breiten Steges 24 des Schwenkhebels 9 etwas kleiner gewählt als das zweifache des Hubes a₀ der Steckachse 13 der ersten Walze 3, während der Abstand der Kupplungsflächen der zwei Kupplungsteile 23 entsprechend der Dicke X des breiten Steges 24 des Schwenkhebels 9 gewählt ist.The distance b₀ of the fulcrum of the bolt-shaped part 46 of the first driver 43 has been selected in the pivotable roller lever 36 to the fulcrum of the bolt 42 in accordance with the intended reduction gear ratio a₀. In addition, the difference in the thickness Y of the narrow web 25 from the thickness X of the wide web 24 of the pivot lever 9 is chosen to be somewhat smaller than twice the stroke a₀ of the thru axle 13 of the first roller 3, while the distance between the coupling surfaces of the two coupling parts 23 corresponds to that Thickness X of the wide web 24 of the pivot lever 9 is selected.

Auf diese Weise liegt, wenn die zweite Walze 4 sich in der Verbindungspostion zum Farbwerk befindet, der Y-dicke schmale Steg 25 des Schwenkhebels 9 zwischen den beiden Kupplungsteilen 23 im Bereich B. Da eine axiale Bewegung der Steckachse 12 der Walze 4 einschließlich der Hebel 10, 11 durch seitliche Abstützung an den Seitenwänden 32 verhindert ist, führt die erste Walze 3 ihren axialen Hub a₀ aus, ohne die Abwicklung der Walze 4 zu beeinflussen. Befindet sich die zweite Walze 4′ in der Tandemwalzenposition als Überreiter zur ersten Walze 3 an der Auftragwalze 2 des Feuchtwerkes, wird, da kein Axialspiel zwischen den Kupplungsflächen der Kupplungsteile 23 und dem breiten Steg 24 des Schwenkhebels 9 vorhanden ist, der Axialhub a₀ von der Steckachse 13 auf die Steckachse 12′ weitergegeben, wobei die zweite Walze 4′ in dieser Position nicht axial fixiert ist. Dies führt zu einer bisher nicht bekannten parallelen Verreibung zweier Reiterwalzen auf der Auftragwalze 2 des Feuchtwerkes mit einem Hub a₀, der gegenüber dem Hub des Farbreibzylinders 8 störunanfällig untersetzt ist, weil von diesem direkt abgeleitet.In this way, when the second roller 4 is in the connection position to the inking unit, the Y-thick narrow web 25 of the pivoting lever 9 between the two coupling parts 23 lies in the area B. Since there is an axial movement of the stub axle 12 of the roller 4 including the levers 10, 11 is prevented by lateral support on the side walls 32, the first roller 3 executes its axial stroke a₀ without influencing the development of the roller 4. Is the second roller 4 'in the tandem roller position as a rider to the first roller 3 on the applicator roller 2 of the dampening system, since there is no axial play between the coupling surfaces of the coupling parts 23 and the wide web 24 of the pivot lever 9, the axial stroke a₀ of the Thru axle 13 passed to the thru axle 12 ', the second roller 4' not axially in this position is fixed. This leads to a previously unknown parallel rubbing of two rider rollers on the applicator roller 2 of the dampening unit with a stroke a₀, which is reduced to failure compared to the stroke of the inking cylinder 8 because it is derived directly from it.

In der vom Farbwerk getrennten Position der Zwischenwalzen 3, 4′ besteht außerdem die Möglichkeit mit einer dritten Walze 33 in der Position der zweiten Walze 4 eine Farb- und Feuchtwerksverbindung wieder herzustellen, ohne die zweite Walze 4′ in ihre Ausgangsposition zurückschwenken zu müssen. Die dritte Zwischenwalze 33 ist hierzu in einer Parkposition zwischen den Seitenwänden 32 der Druckmaschine im Feuchtwerk aufgenommen und wird nur bei Einsatz im Lagerhebel 11 für die umgestellte zweite Walze 4 eingewechselt. Diese weitere Zwischenwalze 33 ist dann ohne Schwenkhebel 9 auf der Steckachse 13 ausgeführt, da sie lediglich aus dem Walzenschloß 15 zum Parken im Feuchtwerk entnommen werden braucht, falls kein Einsatz vorgesehen ist. Letztere Einstellung ermöglicht es eine Verbindung zwischen Feuchtwerk und Farbwerk herzustellen und beide Walzen 3, 4′ verreibend auf der Auftragwalze 2 des Feuchtwerkes anzuordnen.In the separate position of the intermediate rollers 3, 4 'there is also the possibility with a third roller 33 in the position of the second roller 4 to restore an inking and dampening unit connection without having to pivot the second roller 4' back into its starting position. For this purpose, the third intermediate roller 33 is received in a parking position between the side walls 32 of the printing press in the dampening unit and is only replaced when used in the bearing lever 11 for the converted second roller 4. This further intermediate roller 33 is then designed without a pivot lever 9 on the thru axle 13, since it only needs to be removed from the roller lock 15 for parking in the dampening unit if no use is provided. The latter setting makes it possible to establish a connection between the dampening unit and the inking unit and to arrange both rollers 3, 4 'so as to rub on the applicator roller 2 of the dampening unit.

BezugszeichenlisteReference symbol list

11
PlattenzylinderPlate cylinder
22nd
Auftragwalze des FeuchtwerkesApplication roller of the dampening system
33rd
erste Walze des Walzenpaares 3, 4first roller of the roller pair 3, 4
44th
zweite Walze des Walzenpaares 3, 4second roller of the roller pair 3, 4
55
WasserkastenwalzeWater tank roller
66
DosierwalzeDosing roller
77
FarbauftragwalzeInking roller
88th
FarbreibzylinderInk rubbing cylinder
99
SchwenkhebelSwivel lever
1010th
LagerhebelBearing lever
1111
LagerhebelBearing lever
1212
SteckachseThru axle
1313
SteckachseThru axle
1414
WalzenschloßRoller lock
1515
WalzenschloßRoller lock
1616
LanglochLong hole
1717th
BuchseRifle
1818th
Schlitzslot
1919th
Schlitzslot
2020th
abgeflachter Abschnittflattened section
2121
abgeflachter Abschnittflattened section
2222
SicherungsringCirclip
2323
KupplungsteileCoupling parts
2424th
breiter Stegwide bridge
2525th
schmaler Stegnarrow bridge
2626
WalzenschloßRoller lock
2727
zweikantig abgeflachter Mitnehmerdouble flattened driver
2828
Schlitzslot
2929
StellringCollar
3030th
Bohrungdrilling
3131
DruckstückPressure piece
3232
SeitenwandSide wall
3333
dritte Walzethird roller
3434
KugelhülseBall sleeve
3535
MitnehmerrolleCarrier roll
3636
RollenhebelRoller lever
3737
KulisseBackdrop
3838
AntriebsrohrDrive tube
3939
AntriebsrolleDrive roller
4040
AntriebshebelDrive lever
4141
GetriebegehäuseGear housing
4242
Bolzenbolt
4343
erster Mitnehmerfirst carrier
4444
Schlitzslot
4545
QuerschlitzCross slot
4646
bolzenförmiges Teilbolt-shaped part
4747
SchubstangePush rod
4848
prismatisches Teilprismatic part
4949
zweiter Mitnehmersecond driver
5050
QuerschlitzCross slot
5151
prismatisches Teilprismatic part
5252
KugelhülseBall sleeve

Claims (3)

  1. Drive mechanism on offset printing presses for axial to and fro movement of the first or of the first and second rollers of a pair of rollers of a combined damping and inking unit, wherein the pair of rollers can be arranged according to choice seen in the plate cylinder direction of rotation relative to the first ink spreader cylinder and the last applicator roller of the damping unit or only the last applicator roller of the damping unit and the first roller is taken up on both sides with the spindle at the end in each case of a first bearing lever supported axially fixedly and swingably about the centre point of the first ink spreader cylinder, further the second roller is taken up on both sides with the spindle at the end in each case of a second bearing lever supported axially fixedly and swingably about the middle point of the first ink spreader cylinder in variable position by means of a roller lock and on both sides on the spindle of the first roller a swinging lever is pivoted which, by means of roller locks, takes up the second roller additionally and in the pivoting lever guide means for guiding the second roller between a first position in which the second roller is in contact with the first roller and the first ink spreader cylinder as well as a second position in which the second roller is adjusted lowered relative to the first roller together with this as a tandem roller is set laterally against the applicator roller of the damping unit, and wherein, on both sides, the first bearing lever (10) takes up the spindle (13) of the first roller (3) in a one side open bearing position by means of a roller lock (26) with ball sleeve (34), the pivoting lever (9) has a narrow bar (25) and in the direction of the second roller (4) a substantially broader bar (24), in the swivelling region of the swivelling lever (9) there are pinned two coupling parts (23) with the spindle (13) of the first roller (3) at a distance X from one another, which corresponds to the size of the broad bar (24) of the swivelling lever (9), the coupling parts (23) with respect to the centre point of the spindle (13) have a long section (A) and a short section (B) in such a fashion that in the connection position of the rollers (4) between damping and inking unit, the narrow bar (25) of the swinging lever (9) comes to lie between the coupling parts (23) in their section (B) as well as in the changed over tandem roller position of the second roller (4') on the applicator roller (2) of the damping unit separated from the inking unit, the broad bar (24) of the swinging lever (9) exactly fitting between the coupling parts (23) comes to lie in their section (A) and a stroke coupling of the spindle (13) of the first roller (3) with the first ink spreader cylinder (8) via a kinematic chain of two spreader links (36, 47) reducing the axial stroke of the ink spreader cylinder (8) to a predetermined stroke (a₀) of the spindle (13) of the first roller (3).
  2. Drive mechanism according to Claim 1, characterised in that a kinematic chain of spreader links (36, 47) is provided consisting of a swingable roller lever (36) and axially displaceable push rod (47), whereby the swingable roller lever (36) has an entrainer roll (35) which is guided at one end in the slide (37) of the ink spreader cylinder (8), while the other end of the swingable roller lever (36) is supported pivotally by means of a pin (42) on the drive housing (41) of the damping unit, that on the pivotable roller lever (36) furthermore via a first entrainer connection (43, 45, 46, 48) a push rod (47) is pivoted axially movable in the direction of the spindle (13) of the first roller (3) through the side wall (32) and guided via a ball sleeve (52), which, via a second entrainer connection (49 to 51), is pivoted at the beginning of the spindle (13) and that the distance (b₀) of the turning point of the bolt shaped part (46) of the first entrainer (43) in the swingable roller lever (36) is chosen relative to the point of rotation of the bolt (42) in the drive housing (41) corresponding to the desired stroke reduction (a₀).
  3. Drive mechanism according to Claim 1 and 2, characterised in that the difference of the thickness Y of the narrow part (25) from the thickness X of the broad bar (24) of the swinging lever (9) is chosen somewhat smaller than twice the stroke (a₀) of the spindle (13) of the first roller (3).
EP90100483A 1989-03-13 1990-01-11 Driving mechanism for the axial movement of the first or both first and second rollers of a couple of rearrangeable roller in offset printing presses Expired - Lifetime EP0387486B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90100483T ATE96091T1 (en) 1989-03-13 1990-01-11 DRIVE MECHANISM ON OFFSET PRINTING PRESSES FOR AXIAL RECIPROCATION OF THE FIRST OR FIRST AND SECOND ROLLER OF A SWITCHABLE PAIR OF ROLLERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3908044A DE3908044C1 (en) 1989-03-13 1989-03-13
DE3908044 1989-03-13

Publications (3)

Publication Number Publication Date
EP0387486A2 EP0387486A2 (en) 1990-09-19
EP0387486A3 EP0387486A3 (en) 1991-03-27
EP0387486B1 true EP0387486B1 (en) 1993-10-20

Family

ID=6376182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100483A Expired - Lifetime EP0387486B1 (en) 1989-03-13 1990-01-11 Driving mechanism for the axial movement of the first or both first and second rollers of a couple of rearrangeable roller in offset printing presses

Country Status (7)

Country Link
US (1) US5027704A (en)
EP (1) EP0387486B1 (en)
JP (1) JPH074934B2 (en)
AT (1) ATE96091T1 (en)
BR (1) BR9001152A (en)
DE (2) DE3908044C1 (en)
ES (1) ES2045573T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179898A (en) * 1991-11-15 1993-01-19 Rockwell International Corporation Printer with roller mounting assembly
DE4442302B4 (en) * 1994-11-28 2004-05-27 Heidelberger Druckmaschinen Ag Device for the axial reciprocation of friction rollers in the inking unit of printing presses
DE19505625C2 (en) * 1995-02-18 1996-12-12 Roland Man Druckmasch Forced drive for an inking roller in a printing press
DE19529204C2 (en) * 1995-08-09 1997-08-14 Roland Man Druckmasch Dampening unit for an offset printing machine
DE19529205C2 (en) * 1995-08-09 1997-08-14 Roland Man Druckmasch Dampening unit for an offset printing machine
DE19840806C1 (en) * 1998-09-07 1999-11-11 Koenig & Bauer Ag Driven roller for rotary printing machine
DE10044860B4 (en) * 1999-09-29 2008-04-30 Heidelberger Druckmaschinen Ag Drive device for printing machines
JP5334365B2 (en) * 2006-10-23 2013-11-06 株式会社ミヤコシ Dampening device for offset printing machine
JP5058070B2 (en) * 2008-05-21 2012-10-24 アキヤマインターナショナル株式会社 Water supply device for sheet-fed offset printing press
DK2844471T3 (en) * 2012-04-24 2018-10-22 Tresu As Pressure works with adjustment of rollers by a deflector and method of adjustment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1160413B (en) * 1978-12-28 1987-03-11 Cigardi Omc Sa PERFECTED WATER AND WATER-ALCOHOL BLENDING DEVICE, APPLICABLE ON OFFSET PRINTING MACHINES
DD140227A1 (en) * 1979-01-15 1980-02-20 Hans Johne WRITING ROLL IN PRINTING MACHINES
DE3028406C2 (en) * 1980-07-26 1983-09-15 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Device for the axial back and forth movement of distribution rollers in the inking unit of printing machines
DE3424721C2 (en) * 1984-07-05 1986-12-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Inking unit for a printing press

Also Published As

Publication number Publication date
ATE96091T1 (en) 1993-11-15
US5027704A (en) 1991-07-02
EP0387486A3 (en) 1991-03-27
EP0387486A2 (en) 1990-09-19
BR9001152A (en) 1991-03-19
JPH02274543A (en) 1990-11-08
DE59003110D1 (en) 1993-11-25
ES2045573T3 (en) 1994-01-16
DE3908044C1 (en) 1990-05-17
JPH074934B2 (en) 1995-01-25

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