EP0491112B1 - Impression cylinder for a printing machine with arrangements for oil conditioning and lubricating - Google Patents

Impression cylinder for a printing machine with arrangements for oil conditioning and lubricating Download PDF

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Publication number
EP0491112B1
EP0491112B1 EP91110849A EP91110849A EP0491112B1 EP 0491112 B1 EP0491112 B1 EP 0491112B1 EP 91110849 A EP91110849 A EP 91110849A EP 91110849 A EP91110849 A EP 91110849A EP 0491112 B1 EP0491112 B1 EP 0491112B1
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EP
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Prior art keywords
oil
pressure cylinder
cylinder according
oil reservoir
orifices
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EP91110849A
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German (de)
French (fr)
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EP0491112A1 (en
Inventor
Bruno Molinatto
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Componenti Grafici SRL
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Componenti Grafici SRL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/22—Means for cooling or heating forme or impression cylinders

Definitions

  • the above invention relates to a pressure cylinder for a printing press with devices for air conditioning and lubricating the cylinder by means of oil.
  • Deformable pressure cylinders are used in printing machines, i.e. Cylinder with changeable curve, which essentially consist of a jacket, which is provided on the outside with a rubber coating and, with the interposition of ball bearings, is supported by a central support shaft.
  • the support shaft is mounted in the side columns of the printing press.
  • Pressure cylinders of this type which are used, for example, for the precise guiding of the paper tape or for pressing the paper tape against the printing cylinder, rotate at a considerable speed. For this reason it is necessary for the pressure cylinders to work safely that the ball bearings are properly lubricated. It has It has also proven to be advantageous if the amount of heat generated in the pressure cylinders is continuously removed from the cylinder and from the rotating bearings.
  • a pressure cylinder for a printing press in which the receiving shaft of the flexible cylinder jacket is hollow and has an inlet and outlet for a coolant at its ends.
  • the receiving shaft penetrates an oil storage container and is provided with scraper plates which extend in the radial direction up to the immediate vicinity of the inner circumference of the cylinder jacket.
  • the object of the above invention is to avoid these disadvantages and to propose simple means with which a safe, continuous, faultless lubrication by means of oil, the support bearing of the pressure cylinder becomes possible, and that it is still possible to achieve a continuous and automatic air conditioning of the pressure cylinder in order to give the pressure cylinder constant temperature over its entire extent.
  • the object of the invention is achieved in that the oil storage container rotatably receives the elastic jacket of the cylinder via ball bearings, that the storage container has openings on the underside for the discharge of the oil and openings on the top for the supply of the oil, and that the openings with the Work the scraper plates together.
  • metering tubes are provided on the base of the storage container near the ball bearings, one end of which projects into the oil reservoir in the container and the other end is directed towards the body of the associated ball bearing.
  • Oil having such features has the advantage that the oil in the cylindrical storage container is in constant contact with the centrally arranged support shaft, as a result of which the oil quantity is continuously cooled; there is constantly cooled oil available inside the pressure cylinder.
  • the cooled oil is continuously supplied to the inner surface of the flexible cylinder jacket, which means that heat is continuously drawn from this jacket by the amount of oil present.
  • the amount of oil deposits on the inner surface of the cylinder jacket like a fog.
  • the oil layer is scraped off the inner cylinder surface by the scraper plates, which are arranged on the top of the cylindrical storage container.
  • the oil is again conveyed into the interior of the oil reservoir via the holes provided near the scraper blades in order to flow again over the central and cooled shaft.
  • a constant heat exchange is thus achieved; heat is removed from the inner surface of the cylinder jacket, and this leads to a standardization of the temperature on the outer surface of the rubber-coated cylinder. Unwanted, irregular thermal expansion, as well as deviations in shape on the outer surface of the pressure cylinder are avoided. All mechanical components of the pressure cylinder are automatically kept at a constant temperature.
  • the beak-like lubrication or dosing tubes take up oil through an opening in the interior of the oil storage container in order to deliver this to the ball bearings in the form of small drops on the opposite side of the tube.
  • the bores for the outlet of the oil and the bores cooperating with the scraper plates are arranged on a common vertical axis with particular advantage.
  • the pressure cylinder 1 consists of a centrally arranged receiving shaft 2.
  • This shaft 2 has a line 3 for the supply of a certain amount of oil.
  • the shaft has a through hole 4, which makes it possible to supply a coolant from one side of the cell 2, which coolant flows off on the other side of the shaft 2.
  • the shaft 2 also has lines 5 which make it possible to supply compressed air for two inflatable bellows 6 and 7.
  • the bellows 6 are provided for the deformation of the pressure cylinder 1.
  • the shaft 2 is surrounded by a cylindrical storage container 8.
  • Inflatable bellows 6 and 7 are arranged in a known manner between the bottom of the storage container 8 and the supporting shaft 2.
  • flanges 9 and 10 are arranged in a known manner. These flanges store, with the interposition of ball bearings 11 and 12, the ends of the elastically deformable cylinder jacket, which consists of a sleeve 14 made of spring steel or similar, elastic material and with a coating 15 soft-elastic material, eg rubber is coated.
  • the jacket 13 rests on further ball bearings 16, 17, 18 and 19.
  • the inner ring of the bearing is received by the cylindrical body of the storage container 8.
  • the storage container 8 is filled with oil 20 via the line 3, so that the storage container 8 is filled approximately up to the filling height indicated by a dash-dotted line 21. This covers more than half of the circumference of the central shaft 2 with oil.
  • Calibrated bores 22, 23, 24, 25, 26, 27, 28, 29, 30 and 31 are arranged on the underside, in the wall of the storage container 8.
  • the specified number of calibrated holes is not binding and can also be enlarged if necessary.
  • the container wall 8 has openings 32, 33, 34, 35 and 36.
  • Scraper plates 37, 38, 39, 40 and 41 are assigned to these openings 32 to 36 in the manner of a scraper blade.
  • the scraper plates protrude radially from the cylindrical storage container 8.
  • the scraper plates protrude radially outwards and protrude in the immediate vicinity of the inner wall 42 of the casing 14, which is made of spring steel sheet, for example.
  • the essential mechanical components that have been described so far can also be seen in the drawing according to FIG. 2.
  • the calibrated bores 22-31 and the openings 32-36 are advantageously arranged on a common vertical axis.
  • the beak-like lubrication tubes 43 and 44 can be seen in detail, which e.g. are assigned to a ball bearing 18 and ensure constant lubrication of the bearing.
  • the beak-like lubrication tubes can have different shapes and can alternatively be used as required.
  • the lubrication tube 43 consists of an angularly bent tube, which removes oil from the oil reservoir 20 at one end and doses the quantity of oil withdrawn via the other tube to a bore 45 which penetrates both the bottom of the storage container 8 and the inner race of the ball bearing 18 .
  • the beak-like tube 44 absorbs oil through the opening protruding into the oil reservoir 20 and, via the beak 45, the oil removed is fed in the form of metered droplets to the space between the two races of the ball bearing 18.
  • the cylinder 14 made of metal has an outer casing 15 made of rubber.
  • the oil film thus formed can move freely to the scraper plates 37-41. These penetrate into the rotating oil film, represent an obstacle to it and peel the oil film off the inner surface 42 due to the scraping action which occurs. For this it is not necessary that the scraper plates 37-41 come into contact with the inner surface of the rotating pressure cylinder 1.
  • the detached, heated amount of oil is again conveyed through the associated bore 32 into the interior of the cylindrical storage container 8 through the scraper plates 37-41.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

Die vorstehende Erfindung betrifft einen Anpresszylinder fuer eine Druckmaschine mit Einrichtungen zum Klimatisieren und Schmieren des Zylinders mittels Oel.The above invention relates to a pressure cylinder for a printing press with devices for air conditioning and lubricating the cylinder by means of oil.

In Druckmaschinen werden verformbare Anspresszylinder eingesetzt, d.h. Zylinder mit veraenderbarem Bogenverlauf, die im wesentlichen aus einem Mantel bestehen, der an seiner Aussenseite mit einer Gummibeschichtung versehen ist und, unter Zwischenschaltung von Kugellagern, von einer zentralen Stuetzwelle getragen wird. Die Stuetzwelle ist in den Seitenstaendern der Druckmaschine gelagert.Deformable pressure cylinders are used in printing machines, i.e. Cylinder with changeable curve, which essentially consist of a jacket, which is provided on the outside with a rubber coating and, with the interposition of ball bearings, is supported by a central support shaft. The support shaft is mounted in the side columns of the printing press.

Anpresszylinder dieser Art, die z.B. zur genauen Fuehrung des Papierbandes oder zum Anpressen des Papierbandes an den Druckzylinder verwendet werden, rotieren mit erheblicher Drehzahl. Aus diesem Grunde ist es fuer das sichere Arbeiten der Anpresszylinder erforderlich, eine einwandfreie Schmierung der Kugellager vorzusehen. Es hat sich auch als vorteilhaft erwiesen, wenn die in den Anpresszylindern erzeugte Waermemenge fortlaufend vom Zylinder sowie von den sich drehenden Lagern abgefoerdert werden.Pressure cylinders of this type, which are used, for example, for the precise guiding of the paper tape or for pressing the paper tape against the printing cylinder, rotate at a considerable speed. For this reason it is necessary for the pressure cylinders to work safely that the ball bearings are properly lubricated. It has It has also proven to be advantageous if the amount of heat generated in the pressure cylinders is continuously removed from the cylinder and from the rotating bearings.

In den bekannten Anpresszylindern werden die Kugellager meistens ueber eine Fettfuellung geschmiert, Schmierung, die nicht problemlos ist. In den bekannnten Anpresszylindern waren bisher keine Mittel vorgesehen, die es ermoeglichten, den Anpresszylinder waermetechnisch zu klimatisieren, d.h. es sind keine Mittel bekannt geworden, mit denen tatsaechlich die entstehende Waerme aus dem Anpresszylinder, besonders von den Kugellagern des Zylinders, d.h. in Punkten groesster thermischer Belastung des Zylinders, abfuehrbar waere. Dies fuehrt zu erheblichen, lokalen Erwaermungen des Anpresszylinders, besonders in der Naehe der Stuetzlager. Diese Waermeanhaeufung fuehrt wiederum zu einer groesseren Waermedehnung des Zylinderaussenmantels, was zu einer unerwuenschten Durchmesserzunahme des Anpresszylinders, besonders in der Naehe der Stuetzlager fuehrt, was Massabweichungen mit sich bringt, die wiederum Druckfehler hervorrufen.In the known pressure cylinders, the ball bearings are mostly lubricated with a grease filling, lubrication that is not without problems. So far, no means were provided in the known pressure cylinders which made it possible to air-condition the pressure cylinder thermally, i.e. no means have become known with which the heat actually generated from the pressure cylinder, in particular from the ball bearings of the cylinder, that is to say in points of the greatest thermal Load on the cylinder, would be removable. This leads to considerable local heating of the pressure cylinder, especially in the vicinity of the support bearings. This heat build-up in turn leads to a greater thermal expansion of the cylinder outer jacket, which leads to an undesirable increase in the diameter of the pressure cylinder, especially in the vicinity of the support bearings, which leads to dimensional deviations, which in turn cause printing errors.

Aus der EP-A-0 179 363 ist ein Anpresszylinder fuer eine Druckmaschine bekannt, bei dem die Aufnahmewelle des flexibel ausgebildeten Zylindermantels hohl ausgebildet ist und an ihren Enden einen Zu- bzw. Ablauf fuer ein Kuehlmittel besitzt. Die Aufnahmewelle durchdringt einen Oelvorratsbehaelter und ist mit Schaberblechen versehen, die sich in Radialrichtung bis in die unmittelbare Naehe des inneren Umfangs des Zylindermantel erstrecken.From EP-A-0 179 363 a pressure cylinder for a printing press is known, in which the receiving shaft of the flexible cylinder jacket is hollow and has an inlet and outlet for a coolant at its ends. The receiving shaft penetrates an oil storage container and is provided with scraper plates which extend in the radial direction up to the immediate vicinity of the inner circumference of the cylinder jacket.

Aufgabe der vorstehenden Erfindung ist es, diese Nachteile zu vermeiden und einfache Mittel vorzuschlagen, mit denen eine sichere, kontinuierliche, einwandfreie Schmierung mittels Oel der Stuetzlager des Anpresszylinders moeglich wird, und dass es weiterhin ermoeglicht wird, eine kontinuierliche und automatische Klimatisierung des Anpresszylinders zu erzielen, um dem Anpresszylinder gleichbleibende Temperatur ueber seine gesamte Erstreckung zu verleihen.The object of the above invention is to avoid these disadvantages and to propose simple means with which a safe, continuous, faultless lubrication by means of oil, the support bearing of the pressure cylinder becomes possible, and that it is still possible to achieve a continuous and automatic air conditioning of the pressure cylinder in order to give the pressure cylinder constant temperature over its entire extent.

Die erfindungsgemaesse Aufgabe wird dadurch geloest, dass der Oelvorratsbehaelter ueber Kugellager den elastischen Mantel des Zylinders drehbar aufnimmt, dass der Vorratsbehaelter an seiner Unterseite Oeffnungen fuer den Auslauf des Oeles und an seiner Oberseite Oeffnungen fuer die Zufuhr des Oeles aufweist, und dass die Oeffnungen mit den Schaberblechen zusammenarbeiten.The object of the invention is achieved in that the oil storage container rotatably receives the elastic jacket of the cylinder via ball bearings, that the storage container has openings on the underside for the discharge of the oil and openings on the top for the supply of the oil, and that the openings with the Work the scraper plates together.

Mit besonderem Vorteil sind am Grund des Vorratsbehaelters in der Naehe der Kugellager, Dosierroehrchen vorgesehen, von denen je ein Ende in den Oelvorrat im Behaelter ragt, und das andere Ende auf den Koerper des zugeordneten Kugellagers gerichtet ist.With particular advantage, metering tubes are provided on the base of the storage container near the ball bearings, one end of which projects into the oil reservoir in the container and the other end is directed towards the body of the associated ball bearing.

Mit Einrichtungen zum Klimatisieren und Schmieren mittels; Oel, die solche Merkmale aufweisen, wird der Vorteil erzielt, dass das im zylinderfoermig ausgebildeten Vorratsbehaelter befindliche Oel staendig mit der zentral angeordneten Tragewelle in Kontakt steht, wodurch die Oelmenge andauernd gekuehlt wird; es steht staendig gekuehltes Oel im Inneren des Anpresszylinders zur Verfuegung.With devices for air conditioning and lubrication by means of; Oil having such features has the advantage that the oil in the cylindrical storage container is in constant contact with the centrally arranged support shaft, as a result of which the oil quantity is continuously cooled; there is constantly cooled oil available inside the pressure cylinder.

Dank der Vorsehung kalibrierter Oeffnungen am Grund des Oelvorratsbehaelters wird das gekuehlte Oel andauernd der Innenflaeche des flexiblen Zylindermantels zugefuehrt, dadurch wird von diesem Mantel durch die vorhandene Oelmenge kontinuerlich Waerme abgezogen.Thanks to the provision of calibrated openings at the bottom of the oil reservoir, the cooled oil is continuously supplied to the inner surface of the flexible cylinder jacket, which means that heat is continuously drawn from this jacket by the amount of oil present.

Waehrend der Drehbewegung des Zylindermantels legt sich, aufgrund der auftretenden Zentrifugalkraefte die Oelmenge schleierartig an der inneren Flaeche des Zylindermantels ab. Von der inneren Zylinderflaeche wird die Oelschicht durch die Schaberbleche, die an der Oberseite des zylindrisch ausgebildeten Vorratsbehaelters angeordnet sind, abgeschabt. Ueber die in der Naehe der Schaberklingen vorgesehenen Bohrungen wird das Oel erneut in das Innere des Oelvorratsbehaelters gefoerdert, um erneut ueber die zentrale und gekuehlte Welle zu fliessen.During the rotation of the cylinder jacket, due to the centrifugal forces that occur, the amount of oil deposits on the inner surface of the cylinder jacket like a fog. The oil layer is scraped off the inner cylinder surface by the scraper plates, which are arranged on the top of the cylindrical storage container. The oil is again conveyed into the interior of the oil reservoir via the holes provided near the scraper blades in order to flow again over the central and cooled shaft.

Somit wird ein staendiger Waermeaustausch erzielt; von der Innenflaeche des Zylindermantels wird Waerme abgefoerdert, und dies fuehrt zu einer Vereinheitlichung der Temperatur auf der Aussenflaeche des mit Gummi ummantelten Zylinders. Es werden unerwuenschte, unregelmaessige Waermedehnungen, sowie Formabweichungen auf der Aussenflaeche des Anpresszylinders vermieden. Alle mechanischen Bauteile des Anpresszylinders werden automatisch auf einer konstanten Temperatur gehalten.A constant heat exchange is thus achieved; heat is removed from the inner surface of the cylinder jacket, and this leads to a standardization of the temperature on the outer surface of the rubber-coated cylinder. Unwanted, irregular thermal expansion, as well as deviations in shape on the outer surface of the pressure cylinder are avoided. All mechanical components of the pressure cylinder are automatically kept at a constant temperature.

Dank der Vorsehung von Schmierroehrchen wird eine kontinuierliche und genau dosierte, sichere Schmierung eines jeden Kugellagers erreicht. Die schnabelartig ausgebildeten Schmier- oder Dosierroehrchen, nehmen ueber eine Oeffnung im Inneren des Oelvorratsbehaelters Oel auf, um dieses auf der gegenueberliegenden Roehrchenseite in Form kleiner Tropfen an die Kugellagern abzugeben.Thanks to the provision of lubrication tubes, continuous and precisely metered, safe lubrication of every ball bearing is achieved. The beak-like lubrication or dosing tubes take up oil through an opening in the interior of the oil storage container in order to deliver this to the ball bearings in the form of small drops on the opposite side of the tube.

Mit besonderem Vorteil sind die Bohrungen fuer den Auslauf des Oel, sowie die mit den Schaberblechen zusammenarbeitenden Bohrungen auf einer gemeinsamen Vertikalachse angeordnet.The bores for the outlet of the oil and the bores cooperating with the scraper plates are arranged on a common vertical axis with particular advantage.

Weitere Vorteile der Erfindung koennen der nun folgenden Beschreibung, den Zeichnungen und den Unteranspruechen entnommen werden.Further advantages of the invention can be found in the following description, the drawings and the subclaims.

Der Gegenstand der vorstehenden Erfindung wird nun genauer anhand eines Ausfuehrungsbeispieles beschrieben und in den beigefuegten Zeichnungen dargestellt.The object of the above invention will now be described in more detail with reference to an exemplary embodiment and shown in the accompanying drawings.

Es zeigen:

  • Fig. 1 einen Laengschnitt durch den erfindungsgemaess ausgebildeten Anpresszylinder;
  • Fig. 2 den Anpresszylinder im Querschnitt entlang der Linie II-II der Fig. 1; und
  • Fig. 3 ein Detail eines Kugellagers mit dem zugeordneten Schmierroehrchen in vergroessertem Massstab.
Show it:
  • Fig. 1 shows a longitudinal section through the inventive trained pressure cylinder;
  • Figure 2 shows the pressure cylinder in cross section along the line II-II of Fig. 1. and
  • Fig. 3 shows a detail of a ball bearing with the associated lubrication tube on an enlarged scale.

Wie der Fig. 1 zu entnehmen ist, besteht der Anpresszylinder 1 aus einer mittig angeordneten Aufnahmewelle 2. Diese Welle 2 weist eine Leitung 3 fuer die Zufuhr einer bestimmten Oelmenge auf. Ferner weist die Welle eine Durchgangsbohrung 4 auf, die es ermoeglicht, von einer Seite der Zelle 2 ein Kuehlmittel zuzufuehren, das auf der anderen Seite der Welle 2 abfliesst. Die Welle 2 weist ferner Leitungen 5 auf, die es ermoeglichen, Pressluft fuer zwei aufblasbare Baelge 6 und 7 zuzufuehren.As can be seen in FIG. 1, the pressure cylinder 1 consists of a centrally arranged receiving shaft 2. This shaft 2 has a line 3 for the supply of a certain amount of oil. Furthermore, the shaft has a through hole 4, which makes it possible to supply a coolant from one side of the cell 2, which coolant flows off on the other side of the shaft 2. The shaft 2 also has lines 5 which make it possible to supply compressed air for two inflatable bellows 6 and 7.

Die Baelge 6 sind fuer die Verformung des Anpresszylinders 1 vorgesehen.The bellows 6 are provided for the deformation of the pressure cylinder 1.

Die Welle 2 wird von einem zylindrischen Vorratsbehaelter 8 umgeben. Zwischen dem Boden des Vorratsbehaelters 8 und der Tragwelle 2 sind in bekannter Weise aufblasbare Baelge 6 und 7 angeordnet.The shaft 2 is surrounded by a cylindrical storage container 8. Inflatable bellows 6 and 7 are arranged in a known manner between the bottom of the storage container 8 and the supporting shaft 2.

Am Ende der Welle 2 sind in bekannter Weise Flansche 9 und 10 angeordnet. Diese Flansche lagern, unter Zwischenschaltung von Kugellagern 11 und 12, die Enden des elastisch verformbaren Zylindermantels, der aus einer Huelse 14 aus Federstahl oder aehnlichem, elastischem Material besteht und mit einer Beschichtung 15 aus weich-elastischem Material, z.B. Gummi beschichtet ist.At the end of the shaft 2 flanges 9 and 10 are arranged in a known manner. These flanges store, with the interposition of ball bearings 11 and 12, the ends of the elastically deformable cylinder jacket, which consists of a sleeve 14 made of spring steel or similar, elastic material and with a coating 15 soft-elastic material, eg rubber is coated.

In Laengsrichtung des Vorratsbehaelters 8 liegt der Mantel 13 auf weiteren Kugellagern 16, 17, 18 und 19 auf. Der Innenring der Lager wird vom zylindrischen Koerper des Vorratsbehaelters 8 aufgenommen.In the longitudinal direction of the storage container 8, the jacket 13 rests on further ball bearings 16, 17, 18 and 19. The inner ring of the bearing is received by the cylindrical body of the storage container 8.

Der Vorratsbehaelter 8 wird ueber die Leitung 3 mit Oel 20 gefuellt, so dass der Vorratsbehaelter 8 ungefaehr bis zu der mit einer Strichpunktlinie 21 angezeigten Fuellhoehe gefuellt wird. Damit wird mehr als die Haelfte des Umfanges der zentralen Welle 2 vom Oel abgedeckt.The storage container 8 is filled with oil 20 via the line 3, so that the storage container 8 is filled approximately up to the filling height indicated by a dash-dotted line 21. This covers more than half of the circumference of the central shaft 2 with oil.

An der Unterseite, in der Wand des Vorratsbehaelters 8, sind kalibrierte Bohrungen 22, 23, 24, 25, 26, 27, 28, 29, 30 und 31 angeordnet. Die angegebene Anzahl der kalibrierten Bohrungen ist nicht bindend und kann im Bedarfsfalle auch vergroessert werden.Calibrated bores 22, 23, 24, 25, 26, 27, 28, 29, 30 and 31 are arranged on the underside, in the wall of the storage container 8. The specified number of calibrated holes is not binding and can also be enlarged if necessary.

An der Oberseite weist die Behaelterwand 8 Oeffnungen 32, 33, 34, 35 und 36 auf. Diesen Oeffnungen 32 bis 36 sind Schaberbleche 37, 38, 39, 40 und 41 nach Art einer Schaberklinge zugeordnet. Die Schaberbleche stehen radial vom zylinderfoermigen Vorratsbehaelter 8 ab. Die Schaberbleche stehen radial nach aussen ab und ragen bis in unmittelbare Naehe der Innenwand 42 des Mantels 14, der z.B. aus Federstahlblech hergestellt ist. Die wesentlichen, mechanischen Bauteile, die bisher beschrieben wurden, koennen auch der Zeichnung nach Fig. 2 entnommen werden. In vorteilhafter Weise sind die kalibrierten Bohrungen 22 - 31 und die Oeffnungen 32 - 36 auf einer gemeinsamen vertikalen Achse angeordnet.At the top, the container wall 8 has openings 32, 33, 34, 35 and 36. Scraper plates 37, 38, 39, 40 and 41 are assigned to these openings 32 to 36 in the manner of a scraper blade. The scraper plates protrude radially from the cylindrical storage container 8. The scraper plates protrude radially outwards and protrude in the immediate vicinity of the inner wall 42 of the casing 14, which is made of spring steel sheet, for example. The essential mechanical components that have been described so far can also be seen in the drawing according to FIG. 2. The calibrated bores 22-31 and the openings 32-36 are advantageously arranged on a common vertical axis.

Der Fig. 3 koennen im Detail die schnabelartigen Schmierroehrchen 43 bzw. 44 entnommen werden, die z.B. einem Kugellager 18 zugeordnet sind und fuer eine staendige Schmierung des Lagers sorgen.3, the beak-like lubrication tubes 43 and 44 can be seen in detail, which e.g. are assigned to a ball bearing 18 and ensure constant lubrication of the bearing.

Die schnabelartig ausgefuehrten Schmierroehrchen koennen in ihrer Form unterschiedlich ausgebildet sein und alternativ je nach Bedarf Verwendung finden.The beak-like lubrication tubes can have different shapes and can alternatively be used as required.

Das Schmierroehrchen 43 besteht aus einem winklig abgebogenem Roehrchen, das mit einem Ende Oel aus dem Oelvorrat 20 entnimmt und die entnommene Oelmenge dosiert ueber das andere Roehrchen einer Bohrung 45 zufuehrt, die sowohl den Boden des Vorratsbehaelters 8 als auch den inneren Laufring des Kugellagers 18 durchdringt.The lubrication tube 43 consists of an angularly bent tube, which removes oil from the oil reservoir 20 at one end and doses the quantity of oil withdrawn via the other tube to a bore 45 which penetrates both the bottom of the storage container 8 and the inner race of the ball bearing 18 .

Das schnabelartige Roehrchen 44 nimmt hingegen Oel ueber die in den Oelvorrat 20 ragende Oeffnung auf und, ueber den Schnabel 45 wird das entnommene Oel in Form von dosierten Troepfchen dem Zwischenraum zwischen den zwei Laufringen des Kugellagers 18 zugefuehrt.The beak-like tube 44, on the other hand, absorbs oil through the opening protruding into the oil reservoir 20 and, via the beak 45, the oil removed is fed in the form of metered droplets to the space between the two races of the ball bearing 18.

Die Arbeitsweise der Klimatisier- und Schmiereinrichtung wird genauer anhand der Fig. 2 beschrieben.The operation of the air conditioning and lubrication device is described in more detail with reference to FIG. 2.

Wenn der Mantel 13, 14 und 15 des Anpresszylinders 1 in eine Drehbewegung gemaess Pfeil (f) versetzt wird, so wird das Oel, das ueber die kalibrierten Bohrungen 22 - 31 auf die Innenflaeche 42 des elastischen Mantels 14 (aufgrund sich einstellender Zentrifugalkraefte) sofort als duenner Schleier auf die Wand 42 aufgetragen. Dieser aus gekuehltem Oel bestehende Schleier nimmt die sich im elastischen Mantel 13 des Anpresszylinders 1 angesammelte Waerme auf.If the jacket 13, 14 and 15 of the pressure cylinder 1 is rotated according to arrow (f), then the oil, which is applied via the calibrated bores 22 - 31 to the inner surface 42 of the elastic jacket 14 (due to the centrifugal forces that arise) immediately as a thin veil on the wall 42. This veil, consisting of cooled oil, absorbs the heat accumulated in the elastic jacket 13 of the pressure cylinder 1.

Der Zylinder 14 aus Metall weist eine aeussere Ummantelung 15 aus Gummi auf.The cylinder 14 made of metal has an outer casing 15 made of rubber.

Der so gebildete Oelfilm kann sich ungehindert bis zu den Schaberblechen 37 - 41 bewegen. Diese dringen in den rotierenden Oelfim ein, stellen ein Hindernis fuer diesen dar und schaelen den Oelfim durch die eintretende Schaberwirkung von der Innenflaeche 42 ab. Dazu ist es nicht notwendig, dass die Schaberbleche 37 - 41 mit der Innenflaeche des rotierenden Anpresszylinders 1 in Beruehrung treten. Durch die Schaberbleche 37 - 41 wird die abgeloeste, erwaermte Oelmenge ueber die zugeordnete Bohrung 32 erneut in das Innere des zylindrischen Vorratsbehaelters 8 gefoerdert.The oil film thus formed can move freely to the scraper plates 37-41. These penetrate into the rotating oil film, represent an obstacle to it and peel the oil film off the inner surface 42 due to the scraping action which occurs. For this it is not necessary that the scraper plates 37-41 come into contact with the inner surface of the rotating pressure cylinder 1. The detached, heated amount of oil is again conveyed through the associated bore 32 into the interior of the cylindrical storage container 8 through the scraper plates 37-41.

Waehrend des Niederrieselns des von der Wand 42 der elastischen Metallhuelse 14 abgeloesten Oels, umstroemt dieses die Oberseite der zentralen gekuehlten Welle 2, um sofort abgekuehlt zu werden. Der dem Oel entzogene Waermegehalt wird ueber die Kuehlfluessigkeit, die durch die Bohrung 4 der Welle 2 fliesst, abgefoerdert.During the trickling down of the oil detached from the wall 42 of the elastic metal sleeve 14, the oil flows around the top of the central cooled shaft 2 in order to be cooled immediately. The heat content extracted from the oil is conveyed away via the cooling liquid flowing through the bore 4 of the shaft 2.

Claims (10)

  1. Pressure cylinder for a printing machine, in which the receiving shaft (2) of the flexible cylinder casing (13) is made hollow (4) and at its ends possesses an inflow and a flow-off for a coolant, in which the receiving shaft (2) passes through an oil reservoir (8), ductor plates being provided which extend radially into the immediate vicinity of the inner circumference (42) of the elastic cylinder casing (13), characterized in that the oil reservoir (8) receives an elastic cylinder casing (13) rotatably, with ball bearings (16, 17, 18, 19) interposed, in that the oil reservoir (20) has on its underside orifices (22-31) for the outflow of the oil and on its topside orifices (32-36) for feeding the oil, and in that the orifices (32-36) cooperate with the ductor plates (37-41).
  2. Pressure cylinder according to Claim 1, characterized in that at the bottom of the oil reservoir (8), in the vicinity of the ball bearings (16-19), there are oil-metering devices (43-46) which at one end (43, 44) open into the oil supply (20) of the oil reservoir (8) and at the other end are directed to the ball bearing (16-19) to be lubricated.
  3. Pressure cylinder according to Claim 1 or 2, characterized in that the oil reservoir (8) is designed as a cylinder casing of circular cross-section and receives the inner ring of the ball bearings (16-19) which receive the elastic outer cylinder casing (13).
  4. Pressure cylinder according to one or more of the preceding claims, characterized in that the orifices (22-31) in the bottom of the oil reservoir (8) are designed as calibrated bores.
  5. Pressure cylinder according to one or more of the preceding claims, characterized in that the orifices (22-31) in the bottom of the oil reservoir (8) and the orifices (32-36) cooperating with ductor plates (37-41) are arranged on the vertical axis of the receiving shaft (2).
  6. Pressure cylinder according to one or more of the preceding claims, characterized in that the oil-metering devices (43-46) have an angled tube (34), which with one end projects into the oil supply (20) and which with the other end is connected operatively to a bore (45) which passes through the bottom of the reservoir (8) and the inner ring of the associated ball bearing (16-19).
  7. Pressure cylinder according to one or more of the preceding claims, characterized in that the oil-metering devices (43-46) have an angled tube (44) and one end of the tube (44) projects into the oil supply (20), and in that the other end of a tube (46) is directed towards the free space between the two race rings of the corresponding ball bearing (16-19).
  8. Pressure cylinder according to one or more of the preceding claims, characterized in that the oil supply (20) present in the reservoir (8) circulates round more than half (21) of the shaft circumference.
  9. Pressure cylinder according to one or more of Claims 6 to 8, characterized in that the tubes (43, 44, 46) are made beak-like.
  10. Pressure cylinder according to one or more of Claims 6 to 9, characterized in that the tube (46) has an end designed in such a way that the oil is supplied from the oil reservoir (8) in the form of metered droplets to the interspace between two race rings of the corresponding ball-bearing (16-19)
EP91110849A 1990-12-19 1991-07-01 Impression cylinder for a printing machine with arrangements for oil conditioning and lubricating Expired - Lifetime EP0491112B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT02241790A IT1248446B (en) 1990-12-19 1990-12-19 PRESSURE ROLLER FOR PRINTING MACHINE, WITH AIR CONDITIONING AND LUBRICATION SYSTEM
IT2241790 1990-12-19

Publications (2)

Publication Number Publication Date
EP0491112A1 EP0491112A1 (en) 1992-06-24
EP0491112B1 true EP0491112B1 (en) 1995-06-07

Family

ID=11196024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91110849A Expired - Lifetime EP0491112B1 (en) 1990-12-19 1991-07-01 Impression cylinder for a printing machine with arrangements for oil conditioning and lubricating

Country Status (5)

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US (1) US5174206A (en)
EP (1) EP0491112B1 (en)
JP (1) JP3093404B2 (en)
DE (1) DE59105662D1 (en)
IT (1) IT1248446B (en)

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US5535674A (en) * 1994-06-24 1996-07-16 Heidelberger Druckmaschinen Ag Distortion-reduced lithographic printing press
DE19502475C2 (en) * 1995-01-27 1998-07-30 Heidelberger Druckmasch Ag Method and device for duct temperature control in the inking unit of a printing press
US6209456B1 (en) 1996-03-13 2001-04-03 Heidelberger Druckmaschinen Ag Web- and sheet-fed printing unit using various ink types, particularly water-based inks
US5694848A (en) * 1996-03-13 1997-12-09 Heidelberger Druckmaschinen Ag Printing unit for water based inks
IT1301774B1 (en) * 1998-06-22 2000-07-07 Plantex S P A DEVICE FOR COOLING TEXTURED WIRES AND TEXTURING EQUIPMENT PROVIDED WITH THAT DEVICE.
JP4146548B2 (en) 1998-09-11 2008-09-10 松下電器産業株式会社 Battery voltage detection device
US6216761B1 (en) * 1999-03-19 2001-04-17 Linear Products, Inc. Free turning chilling wheel assembly
DE10023205C2 (en) 2000-05-12 2003-07-17 Koenig & Bauer Ag Cylinder of a rotary printing press
DE102004030702B3 (en) * 2004-06-25 2006-02-09 Koenig & Bauer Ag Cylinder for web-shaped material processing machines
EP2275372B1 (en) * 2009-07-13 2012-05-30 Texmag GmbH Vertriebsgesellschaft Roller for a printing press
WO2016087047A1 (en) * 2014-12-04 2016-06-09 Bobst Mex Sa Rotary tool chuck, unit for modifying a flat material, and operating method

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GB1539129A (en) * 1977-04-26 1979-01-24 Kuesters E Roller
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DE8914511U1 (en) * 1989-12-09 1990-02-08 Hanßmann, Erich, Dipl.-Ing., 6347 Angelburg Roller for a device for processing web or sheet material

Also Published As

Publication number Publication date
JP3093404B2 (en) 2000-10-03
IT1248446B (en) 1995-01-19
IT9022417A1 (en) 1992-06-19
DE59105662D1 (en) 1995-07-13
US5174206A (en) 1992-12-29
IT9022417A0 (en) 1990-12-19
JPH0717014A (en) 1995-01-20
EP0491112A1 (en) 1992-06-24

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