EP0205802B1 - Inking roll for a printing press - Google Patents

Inking roll for a printing press Download PDF

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Publication number
EP0205802B1
EP0205802B1 EP86105405A EP86105405A EP0205802B1 EP 0205802 B1 EP0205802 B1 EP 0205802B1 EP 86105405 A EP86105405 A EP 86105405A EP 86105405 A EP86105405 A EP 86105405A EP 0205802 B1 EP0205802 B1 EP 0205802B1
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EP
European Patent Office
Prior art keywords
roller
inking roller
inking
tube
channels
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Expired
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EP86105405A
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German (de)
French (fr)
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EP0205802A2 (en
EP0205802A3 (en
Inventor
Klemens Kemmerer
Peter Hummel
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Manroland AG
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MAN Roland Druckmaschinen AG
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Priority to AT86105405T priority Critical patent/ATE42503T1/en
Publication of EP0205802A2 publication Critical patent/EP0205802A2/en
Publication of EP0205802A3 publication Critical patent/EP0205802A3/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
    • B41F31/002—Heating or cooling of ink or ink rollers

Definitions

  • the invention relates to an inking roller for printing machines, in particular offset printing machines, the interior of which is flowed through by temperature control means, which can be fed in and removed from one end of the inking roller, free cross sections being arranged in the interior of the inking roller, through which the temperature control means flow in countercurrent.
  • GB-A 1 063 401 discloses a processing roller in which the temperature of the roller surface can be controlled.
  • insulating sleeves are provided between the surface and the shaft as well as flow channels in the roller body.
  • DE-A 2 658 380 discloses a tempered ink roller in which at least one displacement body is arranged in the interior of the ink roller.
  • the still free cross-section of the inking roller is divided into two concentric ring gaps by a jacket-like partition wall with good thermal conductivity. These are flowed through by countercurrent tempering agents at a high flow rate.
  • the task is to design an inking roller in such a way that the color temperatures remain largely constant even when the printing machine is down, and a temperature difference of the ink film over the length of the roller is kept as small as possible.
  • the temperature control medium flows radially from a distributor pipe into a countercurrent that forms during the flow.
  • the distributor pipe is arranged in the middle of the axis of the inking roller.
  • the distribution pipe has holes distributed evenly over the length, from which a completely irregular tempering medium flow can emerge into the main part of the wood roller.
  • the object of the invention is to obtain a uniform temperature distribution over the entire surface of the inking roller and, with an optimal coefficient of thermal conductivity, to enable rapid regulation to achieve the desired operating temperature and to keep it constant.
  • inking roller of the type mentioned in that the inking roller is formed from a ribbed Al roller tube supported on both sides. That the cross sections are formed from a plurality of channels arranged in the tube wall of the Al roller tube, that the channels on the opposite end of the supply and discharge of the temperature control means are connected in pairs via a recess, in such a way that the flow and return are arranged alternately next to one another.
  • the inking roller is made of a ribbed aluminum roller tube that is held on both sides.
  • the roller tube is an extruded profile and consists of only one part.
  • the AI roller tube is supported on both ends by roller holders in the printing press.
  • the aluminum material has a significantly lower coefficient of thermal conductivity and a significantly better corrosion behavior. This increases the service life of the ink roller by a considerable amount of time.
  • Another advantage is the reduction in weight of the inking roller, since the inking rollers of conventional design can have a considerable weight in large printing machines.
  • the above-mentioned coefficient of thermal conductivity is still important in order to quickly reach the operating temperature during the warm-up phase. This means that the warm-up phase of the printing press is minimized.
  • the coefficient of thermal conductivity also has a positive effect on maintaining a certain operating temperature, because the control responds optimally quickly.
  • the uniform temperature distribution on the surface of the ink roller makes the print image uniform across its entire width.
  • the channels cover the side areas of the inking roller, so that these areas, which were previously inaccessible, also lead to a homogenization of the printed image, especially in its edge areas.
  • the channels lie in one plane in the tube wall of the Al roller tube and are therefore always at the same distances from the surface of the ink roller; this is an additional contribution to the temperature equalization mentioned above.
  • the cross sections are formed from a plurality of channels arranged in the tube wall of the Al roller tube.
  • This shape shows, due to the ribbing between the channels and the hollow middle part, seen in the axial direction, a great flexural rigidity of the inking roller.
  • This special shape is chosen in order to keep the production costs particularly low, since this shape can be produced particularly easily by the continuous casting press process.
  • the channels are connected in pairs on the opposite end of the inlet and outlet of the temperature control means via a recess, such that the flow and return are alternately arranged side by side. Since a return of the tempering agent is arranged between two inlets, the temperature of the inking roller is optimally evened out over its entire surface.
  • a significant simplification of assembly is that cylindrical recesses are arranged on the end faces of the Al roller tube, in which roller holders are fitted and screwed.
  • the ink roller is due to its simple shape much cheaper in their Manufactured as the well-known inking rollers, in which due to their design, a significant number of welds are essential.
  • When installing only the roller holders on both sides of the AI roller tube are to be inserted and screwed. In the case of repairs, there is an additional simplification of assembly by slightly loosening the lateral roller holders and thereby uncomplicated removal of the AI roller tube.
  • At least one ring seal is arranged between the roller mounts and the Al roller tube in the axially parallel fitting surface.
  • the ink roller is sealed with the simplest of means due to the special mating surface and the ring seal.
  • the channels for the supply and return of the temperature control medium are of the same size and kidney-shaped.
  • the size of the kidney shape is chosen so that the temperature control medium flowing through is optimally mixed due to the speed of the inking roller, which leads to a particularly favorable heat transfer between the temperature control medium and the adjacent walls of the channel.
  • the shape of the channels reduces the throughput cross section compared to conventional known designs, which leads to an increased flow rate of the temperature control medium of the same size in the flow and return.
  • the channels here the supply and return lines in the tube wall of the AI roller tube, are connected to the supply and discharge of the temperature control medium in a particularly simple manner by means of star-shaped bores within the roller holders running radially from the center of the axis.
  • These star-shaped feeders are located on two levels within the roller holder.
  • the inlets are e.g. four pieces; accordingly, four processes.
  • the number of feeds can be chosen differently.
  • the AI roller tube is particularly easy to screw to and mount on the evenly distributed screws after inserting the roller holders.
  • FIG. 1 an ink roller 1 of a printing machine, not shown, is shown.
  • the inking roller 1 has channels 2 in an Al roller tube 3.
  • the section through the inking roller 1 is divided in the middle to clarify the different wall thickness of the Al roller tube 3, and their lateral brackets.
  • An elevator 4.1 is arranged on the surface 4 of the Al roller tube 3.
  • the channels 2 have connections to a supply 5 and return 6 on one end of the inking roller 1.
  • recesses 7 are provided, each of which connects two channels 2 to be assigned to the flow 5 and the return 6.
  • the rigid hollow shape of the Al roller tube 3 can be seen.
  • the above-mentioned weight reduction due to the shape and the choice of material aluminum is also clearly recognizable in the inking roller 1 due to the shape.
  • Ribs 13 are formed between the channels 2.
  • the ribs 13 lead to the optimum flexural rigidity of the inking roller 1.
  • the channels 2 are alternately provided as forward 5 and return 6 for the temperature control medium.
  • the change between supply and return 6 leads to the temperature on the surface 4 of the inking roller 1 being made more uniform.
  • four screws 14 can be seen, which fasten the roller holders 10, 11 to the AI roller tube 3.

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

Abstract

An inking roller for an offset printing machine, through the interior of which a temperature-control medium flows. The roller is formed of aluminum in a barrel shape with journals mounted at both ends. The cross-sections of the plurality of ducts formed in the wall of the barrel result in an optimally uniform surface temperature for the inking roller. On one side of the inking roller the ducts have openings so that the flow and return alternate inside the barrel. The opposite ends of the ducts communicate with openings which establish the counter flow of fluid through the barrel.

Description

Die Erfindung betrifft eine Farbwalze für Druckmaschinen, insbesondere Offsetdruckmaschinen, deren Inneres von Temperiermittel durchflossen ist, das an einer Stirnseite der Farbwalze zu- und abführbar ist, wobei im Inneren der Farbwalze freie Querschnitte angeordnet sind, die vom Temperiermittel im Gegenstrom durchflossen sind.The invention relates to an inking roller for printing machines, in particular offset printing machines, the interior of which is flowed through by temperature control means, which can be fed in and removed from one end of the inking roller, free cross sections being arranged in the interior of the inking roller, through which the temperature control means flow in countercurrent.

Eine Farbwalze dieser Gattung ist durch die US-A 4 183 298 bekannt.An ink roller of this type is known from US-A 4 183 298.

Durch die GB-A 1 063 401 ist eine Bearbeitungswalze bekannt, bei der die Temperatur der Walzenoberfläche gesteuert werden kann. Dazu sind Isoliermäntel zwischen Oberfläche und Welle sowie Strömungskanäle im Walzenkörper vorgesehen.GB-A 1 063 401 discloses a processing roller in which the temperature of the roller surface can be controlled. For this purpose, insulating sleeves are provided between the surface and the shaft as well as flow channels in the roller body.

Durch die DE-C 487 851 ist es bekannt, den Formzylinder einer Tiefdruckmaschine mit Wasser zu durchströmen.It is known from DE-C 487 851 to flow water through the forme cylinder of a gravure printing machine.

Ein Temperieren von Farbwalzen in Farbwerken von Druckmaschinen ist auf die unterschiedlichste Art und Weise bekannt geworden. In der DE-A 2 658 380 ist eine temperierte Farbwalze bekannt geworden, bei der im Inneren der Farbwalze mindestens ein Verdrängungskörper angeordnet ist. Der noch freie Querschnitt der Farbwalze ist durch eine mantelartige Trennwand guter Wärmeleiteigenschaft in zwei konzentrische Ringspalte unterteilt. Diese werden von Temperiermittel im Gegenstrom mit hoher Durchflußgeschwindigkeit durchflossen. Die Aufgabe besteht darin, eine Farbwalze so auszubilden, daß die Farbtemperaturen weitestgehend auch bei Betriebsunterbrechungen der Druckmaschine konstant bleiben und ein Temperaturunterschied des Farbfilms über die Walzenlänge möglichst gering gehalten wird.Temperature control of inking rollers in inking units of printing presses has become known in a wide variety of ways. DE-A 2 658 380 discloses a tempered ink roller in which at least one displacement body is arranged in the interior of the ink roller. The still free cross-section of the inking roller is divided into two concentric ring gaps by a jacket-like partition wall with good thermal conductivity. These are flowed through by countercurrent tempering agents at a high flow rate. The task is to design an inking roller in such a way that the color temperatures remain largely constant even when the printing machine is down, and a temperature difference of the ink film over the length of the roller is kept as small as possible.

Eine andere Lösungsmöglichkeit der Vergleichmäßigung der Temperatur wird durch einen weiteren Stand der Technik versucht zu erreichen. Hier strömt das Temperierungsmittel während des Durchflusses radial aus einem Verteilerrohr in einen sich bildenden Gegenstrom. In dieser Ausführung ist das Verteilerrohr in der Achsmitte der Farbwalze angeordnet. Das Verteilerrohr weist über die Länge gesehen gleichmäßig verteilte Bohrungen auf, aus denen ein völlig unregelmäßig austretender Temperiermitteistrom in den Hauptteil der Holwalze austreten kann.Another possible way of equalizing the temperature is attempted to be achieved by a further prior art. Here, the temperature control medium flows radially from a distributor pipe into a countercurrent that forms during the flow. In this version, the distributor pipe is arranged in the middle of the axis of the inking roller. The distribution pipe has holes distributed evenly over the length, from which a completely irregular tempering medium flow can emerge into the main part of the wood roller.

Auch mit dieser Lösungsmöglichkeit ist aber eine konstante Temperatur über die Walzenlänge nicht erreichbar.Even with this solution, a constant temperature over the length of the roll cannot be achieved.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, über die gesamte Oberfläche der Farbwalze eine gleichmäßige Temperaturverteilung zu erhalten und bei einer optimalen Wärmeleitzahl eine schnelle Regelung zum Erreichen der gewünschten Betriebstemperatur und deren Konstanthalten zu ermöglichen.Proceeding from this prior art, the object of the invention is to obtain a uniform temperature distribution over the entire surface of the inking roller and, with an optimal coefficient of thermal conductivity, to enable rapid regulation to achieve the desired operating temperature and to keep it constant.

Die Lösung der gestellten Aufgabe wird bei einer Farbwalze der eingangs genannten Art dadurch erreicht, daß die Farbwalze aus einem beidseitig gehalterten, verrippten AI-Walzenrohr gebildet ist. Daß die Querschnitte aus mehreren in der Rohrwandung des AI-Walzenrohres angeordneten Kanäle gebildet sind, daß die Kanäle auf der gegenüberliegenden Stirnseite der Zu- und Abführung des Temperiermittels paarweise über eine Ausnehmung miteinander verbunden sind, derart, daß alternierend Vorlauf und Rücklauf nebeneinander angeordnet sind.The solution of the problem is achieved with an inking roller of the type mentioned in that the inking roller is formed from a ribbed Al roller tube supported on both sides. That the cross sections are formed from a plurality of channels arranged in the tube wall of the Al roller tube, that the channels on the opposite end of the supply and discharge of the temperature control means are connected in pairs via a recess, in such a way that the flow and return are arranged alternately next to one another.

Die Farbwalze ist aus einem beidseitig gehalterten, verrippten AI-Walzenrohr gebildet. Das Walzenrohr ist in besonders einfacher Weise hier ein Strangguß-Preßprofil und besteht nur aus einem Teil. Das AI-Walzenrohr ist an seinen beiden Stirnseiten über Walzenhalterungen in der Druckmaschine gelagert. Der Aluminiumwerkstoff hat gegenüber den an sich bekannten herkömmlichen Werkstoffen für Farbwalzen eine wesentlich günstigere Wärmeleitzahl und ein wesentlich besseres Korrosionsverhalten. Die Standzeit der Farbwalze erhöht sich dadurch um einen beträchtlichen Zeitraum. Ein weiterer Vorteil liegt in der Gewichtsreduzierung der Farbwalze, da bei großen Druckmaschinen die Farbwalzen herkömmlicher Bauart ein beträchtliches Gewicht aufweisen können.The inking roller is made of a ribbed aluminum roller tube that is held on both sides. In a particularly simple manner, the roller tube is an extruded profile and consists of only one part. The AI roller tube is supported on both ends by roller holders in the printing press. Compared to the conventional materials for inking rollers known per se, the aluminum material has a significantly lower coefficient of thermal conductivity and a significantly better corrosion behavior. This increases the service life of the ink roller by a considerable amount of time. Another advantage is the reduction in weight of the inking roller, since the inking rollers of conventional design can have a considerable weight in large printing machines.

Die oben genannte Wärmeleitzahl ist weiterhin wichtig, um schnell die Betriebstemperatur während der Aufwärmphase zu erreichen. D.h., die Aufwärmphase der Druckmaschine ist minimiert.The above-mentioned coefficient of thermal conductivity is still important in order to quickly reach the operating temperature during the warm-up phase. This means that the warm-up phase of the printing press is minimized.

Die Wärmeleitzahl wirkt sich ebenfalls positiv auf das Halten einer bestimmten Betriebstemperatur aus, denn die Regelung spricht optimal schnell an.The coefficient of thermal conductivity also has a positive effect on maintaining a certain operating temperature, because the control responds optimally quickly.

Durch die gleichmäßige Temperaturverteilung an der Oberfläche der Farbwalze wird das Druckbild über seine gesamte Breite einheitlich. Die Kanäle überdecken die Seitenbereiche der Farbwalze, so daß diese früher nicht erreichbaren Bereiche ebenfalls zu einer Vergleichmäßigung des Druckbildes gerade in seinen Randbereichen führt. Die Kanäle liegen in einer Ebene in der Rohrwandung des Al-Walzenrohres und weisen damit immer die gleichen Abstände zur Oberfläche der Farbwalze auf; dies ist ein zusätzlicher Beitrag zu der oben genannten Temperaturvergleichmäßigung.The uniform temperature distribution on the surface of the ink roller makes the print image uniform across its entire width. The channels cover the side areas of the inking roller, so that these areas, which were previously inaccessible, also lead to a homogenization of the printed image, especially in its edge areas. The channels lie in one plane in the tube wall of the Al roller tube and are therefore always at the same distances from the surface of the ink roller; this is an additional contribution to the temperature equalization mentioned above.

Die Querschnitte sind aus mehreren in der Rohrwandung des AI-Walzenrohres angeordneten Kanälen gebildet. Diese Formgebung zeigt, durch die in Achsrichtung gesehene Verrippung zwischen den Kanälen und dem hohlen Mittelteil, eine große Biegesteifigkeit der Farbwalze auf. Diese spezielle Formgebung ist so gewählt, um die Herstellungskosten besonders niedrig zu halten, da diese Form sich besonders einfach durch das Strangguß-Preßverfahren herstellen läßt.The cross sections are formed from a plurality of channels arranged in the tube wall of the Al roller tube. This shape shows, due to the ribbing between the channels and the hollow middle part, seen in the axial direction, a great flexural rigidity of the inking roller. This special shape is chosen in order to keep the production costs particularly low, since this shape can be produced particularly easily by the continuous casting press process.

Die Kanäle sind auf der gegenüberliegenden Stirnseite der Zu- und Abführung des Temperiermittels paarweise über eine Ausnehmung miteinander verbunden, derart, daß alternierend Vorlauf und Rücklauf nebeneinander angeordnet sind. Da zwischen zwei Zuläufen jeweils ein Rücklauf des Temperierungsmittels angeordnet ist, vergleichmäßigt sich die Temperatur der Farbwalze über ihre gesamte Oberfläche optimal.The channels are connected in pairs on the opposite end of the inlet and outlet of the temperature control means via a recess, such that the flow and return are alternately arranged side by side. Since a return of the tempering agent is arranged between two inlets, the temperature of the inking roller is optimally evened out over its entire surface.

Eine wesentliche Montageerleichterung besteht darin, daß an den Stirnseiten des AI-Walzenrohres zylindrische Ausnehmungen angeordnet sind, in denen Walzenhalterungen eingepaßt und verschraubt sind. Die Farbwalze ist auf Grund ihrer einfachen Formgebung wesentlich kostengünstiger in ihrer Herstellung als die bekannten Farbwalzen, bei denen auf Grund ihrer Bauform eine erhebliche Anzahl von Schweißnähten unumgänglich sind. Bei der Montage sind lediglich die Walzenhalterungen auf beiden Seiten des AI-Walzenrohres einzusetzen und zu verschrauben. Bei Reparaturen ergibt sich eine zusätzliche Montagevereinfachung durch leichtes lösen der seitlichen Walzenhalterungen und dadurch unkomplizierte Entnahme des AI-Walzenrohres.A significant simplification of assembly is that cylindrical recesses are arranged on the end faces of the Al roller tube, in which roller holders are fitted and screwed. The ink roller is due to its simple shape much cheaper in their Manufactured as the well-known inking rollers, in which due to their design, a significant number of welds are essential. When installing, only the roller holders on both sides of the AI roller tube are to be inserted and screwed. In the case of repairs, there is an additional simplification of assembly by slightly loosening the lateral roller holders and thereby uncomplicated removal of the AI roller tube.

In besonders einfacher Weise ist zwischen den Walzenhalterungen und dem AI-Walzenrohr in der achsparallelen Paßfläche mindestens eine Ringdichtung angeordnet. Damit ist die Farbwalze auf Grund der speziellen Paßfläche und der Ringdichtung mit einfachsten Mitteln abgedichtet.In a particularly simple manner, at least one ring seal is arranged between the roller mounts and the Al roller tube in the axially parallel fitting surface. The ink roller is sealed with the simplest of means due to the special mating surface and the ring seal.

Die Kanäle für Vor- und Rücklauf des Temperiermittels sind gleich groß und nierenförmig. Die Nierenform ist in ihrer Größe dabei so gewählt, daß das durchströmende Temperiermittel auf Grund der Drehzahl der Farbwalze optimal durchmischt wird, was zu einem besonders günstigen Wärmeübergang zwischen dem Temperiermittel und den anliegenden Wänden des Kanales führt. Die Formgebung der Kanäle reduziert den Durchsatzquerschnitt gegenüber herkömmlichen bekannten Ausführungen, was zu einer erhöhten im Vor- und Rücklauf gleich großen Strömungsgeschwindigkeit des Temperiermittels führt.The channels for the supply and return of the temperature control medium are of the same size and kidney-shaped. The size of the kidney shape is chosen so that the temperature control medium flowing through is optimally mixed due to the speed of the inking roller, which leads to a particularly favorable heat transfer between the temperature control medium and the adjacent walls of the channel. The shape of the channels reduces the throughput cross section compared to conventional known designs, which leads to an increased flow rate of the temperature control medium of the same size in the flow and return.

Die Kanäle, hier die Vor- und Rückläufe in der Rohrwandung des AI-Walzenrohres, werden besonders einfach durch sternförmige, radial aus der Achsmitte verlaufende Bohrungen innerhalb der Walzenhalterungen mit der Zuführung und Abführung des Temperiermittels verbunden. Diese sternförmigen Zuführungen liegen in zwei Ebenen innerhalb der Walzenhalterung. Die Zuläufe sind in diesem speziellen vorliegenden Fall z.B. vier Stück; dementsprechend auch vier Abläufe. Je nach Ausführungsform der Farbwalze kann aber die Zahl der Zuführungen anders gewählt werden.The channels, here the supply and return lines in the tube wall of the AI roller tube, are connected to the supply and discharge of the temperature control medium in a particularly simple manner by means of star-shaped bores within the roller holders running radially from the center of the axis. These star-shaped feeders are located on two levels within the roller holder. In this particular case, the inlets are e.g. four pieces; accordingly, four processes. Depending on the embodiment of the ink roller, the number of feeds can be chosen differently.

Das AI-Walzenrohr ist besonders einfach mit vier gleichmäßig verteilten Schrauben, nach dem Einsetzen der Walzenhalterungen, an diesen verschraubt und damit montiert.The AI roller tube is particularly easy to screw to and mount on the evenly distributed screws after inserting the roller holders.

Weitere Vorteile und wesentliche Merkmale der Erfindung gehen aus der nachfolgenden Beschreibung in Verbindung mit den gezeigten Ausführungsbeispielen hervor.

  • Es zeigt: Fig. 1 einen Längsschnitt durch die Farbwalze in der Ebene 11-11 bzw. 12-12 gemäß Fig. 2,
  • Fig. 2 einen Querschnitt durch die Farbwalze längs der Linie 11-11 in Fig. 1,
  • Fig. 3 einen Schnitt längs der Linie 111-111 in Fig. 2 und
  • Fig. 4 einen Querschnitt der Farbwalze gemäß Linie IV-IV in Fig. 1.
Further advantages and essential features of the invention emerge from the following description in connection with the exemplary embodiments shown.
  • 1 shows a longitudinal section through the inking roller in the plane 1 1 -1 1 or 1 2 -1 2 according to FIG. 2,
  • 2 shows a cross section through the inking roller along the line 11-11 in FIG. 1,
  • Fig. 3 is a section along the line 111-111 in Fig. 2 and
  • 4 shows a cross section of the inking roller according to line IV-IV in FIG. 1.

In der Fig. 1 ist eine Farbwalze 1 einer nicht näher gezeigten Druckmaschine dargestellt. Die Farbwalze 1 weist Kanäle 2 in einem AI-Walzenrohr 3 auf. Der Schnitt durch die Farbwalze 1 ist mittig geteilt zur Verdeutlichung der unterschiedlichen Wandstärke des AI-Walzenrohres 3, und deren seitlichen Halterungen. Auf dem AI-Walzenrohr 3 ist an einer Oberfläche 4 ein Aufzug 4.1 angeordnet. Die Kanäle 2 weisen an einer Stirnseite der Farbwalze 1 Verbindungen zu einem Vorlauf 5 und Rücklauf 6 auf. An der gegenüberliegenden Seite der Zuführung eines Temperiermittels sind Ausnehmungen 7 vorgesehen, die jeweils zwei dem Vorlauf 5 und dem Rücklauf 6 zuzuordnende Kanäle 2 miteinander verbinden. An den Stirnseiten 1.1, 1.2 der Farbwalze 1 sind weitere zylindrische Ausnehmungen 8, 9 angeordnet, in die jeweils Walzenhalterungen 10, 11 mit einer Paßfläche 8.1 eingesetzt werden können. In der Paßfläche 8.1 ist eine Ringdichtung 12 angeordnet. Die beiden Walzenhalterungen 10, 11 werden mittels Schrauben 14 am AI-Walzenrohr 3 verschraubt.In Fig. 1, an ink roller 1 of a printing machine, not shown, is shown. The inking roller 1 has channels 2 in an Al roller tube 3. The section through the inking roller 1 is divided in the middle to clarify the different wall thickness of the Al roller tube 3, and their lateral brackets. An elevator 4.1 is arranged on the surface 4 of the Al roller tube 3. The channels 2 have connections to a supply 5 and return 6 on one end of the inking roller 1. On the opposite side of the supply of a temperature control, recesses 7 are provided, each of which connects two channels 2 to be assigned to the flow 5 and the return 6. At the end faces 1.1, 1.2 of the inking roller 1, further cylindrical recesses 8, 9 are arranged, in each of which roller holders 10, 11 with a mating surface 8.1 can be inserted. In the mating surface 8.1, an annular seal 12 is arranged. The two roller mounts 10, 11 are screwed to the Al roller tube 3 by means of screws 14.

In der Fig. 4 ist die biegesteife Hohlform des Al-Walzenrohres 3 erkennbar. Die oben genannte Gewichtsreduzierung auf Grund der Formgebung und der Materialwahl Aluminium ist ebenfalls in der Farbwalze 1 auf Grund der Formgebung deutlich erkennbar.4, the rigid hollow shape of the Al roller tube 3 can be seen. The above-mentioned weight reduction due to the shape and the choice of material aluminum is also clearly recognizable in the inking roller 1 due to the shape.

Zwischen den Kanälen 2 sind Verrippungen 13 ausgebildet. Die Verrippungen 13 führen zu der optimalen Biegesteifigkeit der Farbwalze 1. Alternierend sind die Kanäle 2 als Vor- 5 und Rücklauf 6 für das Temperiermittel vorgesehen. Der Wechsel zwischen Vor- und Rücklauf 6 führt zu der Vergleichmäßigung der Temperatur an der Oberfläche 4 der Farbwalze 1. In der Rohrwandung der Farbwalze 1 sind vier Schrauben 14 erkennbar, die die Walzenhalterungen 10, 11 am AI-Walzenrohr 3 befestigen.Ribs 13 are formed between the channels 2. The ribs 13 lead to the optimum flexural rigidity of the inking roller 1. The channels 2 are alternately provided as forward 5 and return 6 for the temperature control medium. The change between supply and return 6 leads to the temperature on the surface 4 of the inking roller 1 being made more uniform. In the tube wall of the inking roller 1, four screws 14 can be seen, which fasten the roller holders 10, 11 to the AI roller tube 3.

Claims (8)

1. Inking roller for printing presses, particularly offset printing presses through the interior of which tempering agent flows which can be fed and returned at one end face of the inking roller wherein, in the interior of the inking roller, free cross sections are arranged through which the tempering agent flows in countercurrent, characterised in that the inking roller (1) is constituted by an AI-roller tube (3) mounted on both sides, the cross section of which has several channels (2) arranged near the tube wall, that the channels (2) are connected with one another in pairs via an aperture (7) on the end face (1.2) lying opposite the tempering agent feed and return in such a fashion that alternately flow (5) and return (6) lie adjacent one another.
2. Inking roller according to Claim 1, characterised in that cylindrical recesses (8, 9) are arranged on the end faces (1.1, 1.2) of the AI-roller tube (3) into which roller mountings (10, 11) are fitted and bolted.
3. Inking roller according to Claim 1 and 2, characterised in that between the roller mountings (10, 11) and the AI-roller tube (3) in the mating surfaces (8.1.) parallel to the axis, at least one ring seal (12) is arranged.
4. Inking roller according to Claims 1 to 3, characterised in that between the channels (2), bar-like ribs (13) are arranged in the AI-roller tube (3).
5. Inking roller according to Claims 1 to 4, characterised in that the inking roller (1), with the ribs (13) with the hollow shape of the AI-roller tube (3), is stiff against bending.
6. Inking roller according to at least one of the preceding claims, characterised in that the channels (2) for flow (5) and return (6) of the tempering agent are of equal size and kidney shaped.
7. Inking roller according to at least one of the preceding claims, characterised in that the AI-roller tube (3) is bolted with four bolts (14) evenly divided around the periphery to the roller mountings (10, 11).
8. Inking roller according to at least one of the preceding claims, characterised in that flow (5) and return (6) of the channels (2) are star shaped bores running radially from the central axis within the one roller mounting (10).
EP86105405A 1985-06-14 1986-04-18 Inking roll for a printing press Expired EP0205802B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105405T ATE42503T1 (en) 1985-06-14 1986-04-18 INK ROLLER FOR PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3521424 1985-06-14
DE3521424A DE3521424C1 (en) 1985-06-14 1985-06-14 Ink roller for printing machines

Publications (3)

Publication Number Publication Date
EP0205802A2 EP0205802A2 (en) 1986-12-30
EP0205802A3 EP0205802A3 (en) 1987-09-16
EP0205802B1 true EP0205802B1 (en) 1989-04-26

Family

ID=6273324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105405A Expired EP0205802B1 (en) 1985-06-14 1986-04-18 Inking roll for a printing press

Country Status (5)

Country Link
US (1) US4712475A (en)
EP (1) EP0205802B1 (en)
JP (1) JPS6285946A (en)
AT (1) ATE42503T1 (en)
DE (1) DE3521424C1 (en)

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CN101780728A (en) * 2009-01-19 2010-07-21 海德堡印刷机械股份公司 Printer

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US5148742A (en) * 1991-01-10 1992-09-22 Belgium Tool And Die Company Can coater with improved deactivator responsive to absence of a workpiece
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JPH07241982A (en) * 1994-03-07 1995-09-19 Mitsubishi Heavy Ind Ltd Method and apparatus for cooling cooling-roller with cooling medium
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DE102008026496A1 (en) * 2008-06-03 2009-12-24 Knorr, Andreas, Dipl.-Ing. Roller with self-adjustable deflection
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CN101780728A (en) * 2009-01-19 2010-07-21 海德堡印刷机械股份公司 Printer
CN101780728B (en) * 2009-01-19 2013-08-07 海德堡印刷机械股份公司 Printer

Also Published As

Publication number Publication date
JPH0549029B2 (en) 1993-07-23
DE3521424C1 (en) 1986-06-12
JPS6285946A (en) 1987-04-20
EP0205802A2 (en) 1986-12-30
ATE42503T1 (en) 1989-05-15
US4712475A (en) 1987-12-15
EP0205802A3 (en) 1987-09-16

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