EP0022156B1 - Cooling roller with an outer roller envelope and an inner body - Google Patents

Cooling roller with an outer roller envelope and an inner body Download PDF

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Publication number
EP0022156B1
EP0022156B1 EP80102676A EP80102676A EP0022156B1 EP 0022156 B1 EP0022156 B1 EP 0022156B1 EP 80102676 A EP80102676 A EP 80102676A EP 80102676 A EP80102676 A EP 80102676A EP 0022156 B1 EP0022156 B1 EP 0022156B1
Authority
EP
European Patent Office
Prior art keywords
coolant
roller
cooling
envelope
spiral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80102676A
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German (de)
French (fr)
Other versions
EP0022156A3 (en
EP0022156A2 (en
Inventor
Ingo Köbler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0022156A2 publication Critical patent/EP0022156A2/en
Publication of EP0022156A3 publication Critical patent/EP0022156A3/en
Application granted granted Critical
Publication of EP0022156B1 publication Critical patent/EP0022156B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D11/00—Heat-exchange apparatus employing moving conduits
    • F28D11/02—Heat-exchange apparatus employing moving conduits the movement being rotary, e.g. performed by a drum or roller
    • 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
    • Y10S165/00—Heat exchange
    • Y10S165/135—Movable heat exchanger
    • Y10S165/139—Fully rotatable
    • Y10S165/147—Fluid impeller or material advancer
    • Y10S165/148—Auger

Definitions

  • the invention relates to a cooling roller with an outer, rotating roller shell mounted in the side walls and a cylindrical inner body mounted concentrically in this to form a flow space for a coolant passed through the hollow axis of the inner body, the inner body being a stationary coolant displacement body.
  • DE-U-7 209 772 describes a double-walled cooling roller for rotary printing presses with a centrally arranged, one-sided cooling medium inlet, in which the space between the inner and the outer roller jacket serves as a flow cross section.
  • the outlet of the cooling medium lies in the extension area or in the approximation area of the roll jacket flow cross-section.
  • a cylinder for a printing press is known from US-A-2849951, which has a rotating jacket and a fixed inner body as a coolant displacer. The cooling medium is fed in on one side of the roll and discharged on the other.
  • the positively guided cooling medium is conveyed through the space between the inner and the outer roller jacket with a correspondingly high pressure.
  • the disadvantage of such cooling rollers is the need to supply the cooling medium to the cooling roller at high pressure. This in turn creates problems with the sealing of the cooling roll.
  • a water ring or a centrifugal ring is formed, through which the heat exchange is impaired when the cooling roller flows axially.
  • the invention is therefore based on the object of improving a cooling roller with an outer roller shell and a cylindrical inner body mounted concentrically therein so that a sufficient flow through the cooling roller is possible without the use of additional aids and high pressures.
  • the coolant is conveyed at a sufficient axial speed through the flow space formed between the outer roll shell and the stationary cylindrical inner body, so that sufficient cooling is achieved as a result of the rotation of the outer roll shell the roller is guaranteed.
  • a cooling roll is schematically shown with an outer roll shell 5, which is mounted in a left side wall 1 in a bearing 3 and in a right side wall 2 in a bearing 4.
  • a fixed cylindrical displacement body 6 is provided as an installation part in the outer roll shell 5 of the cooling roll.
  • the displacement body 6 is arranged in a holder 8 on the right-hand side in bearings 10 and in the side wall 1 on the left-hand side in a bearing 20 in a stationary, ie fixed, manner.
  • a hollow axis 9 runs in the fixed cylindrical displacement body 6 and is used on the right and on the left side for the aforementioned mounting of the displacement body 6.
  • an inflow tube 18 arranged concentrically on the left side of the illustration.
  • the inflow pipe 18 and at the right end of the cooling roll, the hollow axis 9 is provided with corresponding holes or slots.
  • the coolant for example the water
  • the coolant is transported in the axial direction through the cooling roller with the aid of the, for example, groove-shaped coolant delivery spiral present on the inner side 16 of the outer roller shell 5 or a correspondingly shaped baffle arranged in the axial direction on the inner side 16.
  • a fixed water return and baffle plate 15 is arranged on the stationary hollow roller 9, through which the coolant enters the interior of the hollow roller 9 through corresponding openings, so that it can be drained off via the coolant drain 14.
  • the rotational flow creates centrifugal forces which counteract the central outflow of the coolant through the hollow axis 9 and thus require a corresponding pressure.
  • a calming space 21 for the rotational flow.
  • the calming space 21 can be equipped with the guide vanes 22 shown in FIG. 2.
  • the inventive design of the cooling roll thus advantageously transports the coolant through the roll without additional coolant transport devices, it being possible for a coolant pressure to be relatively low. Since no rotating water connection is required, there is no wear and tear on the water supply and the water flow between the fixed inner body and the rotating roller jacket. This is another significant advantage compared to the double-walled cooling rolls with rotating inlet and outlet connections.
  • coolant delivery spiral 16 with respect to shape and depth in the outer jacket 5 of the cooling roll as a guide plate or groove can be specifically determined in practice by the person skilled in the art without difficulty.
  • the coolant delivery spiral 16 was therefore not shown in detail in the drawing.

Description

Die Erfindung betrifft eine Kühlwalze mit einem äusseren, in Seitenwänden gelagerten, rotierenden Walzenmantel und einem konzentrisch in diesem gelagerten zylindrischen Innenkörper zur Bildung eines Strömungszwischenraumes für ein durch die Hohlachse des Innenkörpers geleitetes Kühlmittel, wobei der Innenkörper ein ortsfester Kühlmittelverdrängungskörper ist.The invention relates to a cooling roller with an outer, rotating roller shell mounted in the side walls and a cylindrical inner body mounted concentrically in this to form a flow space for a coolant passed through the hollow axis of the inner body, the inner body being a stationary coolant displacement body.

In dem DE-U-7 209 772 ist eine doppelwandige Kühlwalze für Rotationsdruckmaschinen mit mittig angeordnetem, einseitig liegendem Kühlmediumzulauf beschrieben, bei der der Zwischenraum zwischen dem inneren und dem äusseren Walzenmantel als Strömungsquerschnitt dient. Bei dieser bekannten doppelwandigen Kühlwalze liegt der Ablauf des Kühlmediums im Verlängerungsbereich bzw. im Näherungsbereich des Walzenmanteldurchströmungsquerschnittes. Des weiteren ist aus der US-A-2849951 ein Zylinder für eine Druckmaschine bekannt, der einen rotierenden Mantel und einen feststehenden Innenkörper als Kühlmittelverdränger aufweist. An einer Walzenseite wird das Kühlmedium zu- und auf der anderen abgeführt.DE-U-7 209 772 describes a double-walled cooling roller for rotary printing presses with a centrally arranged, one-sided cooling medium inlet, in which the space between the inner and the outer roller jacket serves as a flow cross section. In this known double-walled cooling roll, the outlet of the cooling medium lies in the extension area or in the approximation area of the roll jacket flow cross-section. Furthermore, a cylinder for a printing press is known from US-A-2849951, which has a rotating jacket and a fixed inner body as a coolant displacer. The cooling medium is fed in on one side of the roll and discharged on the other.

Bei solchen doppelwandigen Ausführungen wird das zwangsgeführte Kühlmedium durch den Zwischenraum zwischen dem inneren und dem äusseren Walzenmantel mit entsprechend hohem Druck gefördert. Der Nachteil solcher Kühlwalzen besteht in der Notwendigkeit, das Kühlmedium mit hohem Druck der Kühlwalze zuzuführen. Dadurch entstehen wiederum Probleme bei der Abdichtung der Kühlwalze. Ausserdem entsteht besonders bei hohen Rotationsgeschwindigkeiten ein Wasserring bzw. ein Zentrifugalring, durch den der Wärmeaustausch bei der axialen Durchströmung der Kühlwalze verschlechtert wird.In such double-wall designs, the positively guided cooling medium is conveyed through the space between the inner and the outer roller jacket with a correspondingly high pressure. The disadvantage of such cooling rollers is the need to supply the cooling medium to the cooling roller at high pressure. This in turn creates problems with the sealing of the cooling roll. In addition, especially at high rotational speeds, a water ring or a centrifugal ring is formed, through which the heat exchange is impaired when the cooling roller flows axially.

Zur Behebung des vorgenannten Nachteils wurden bereits in doppelwandigen Kühlwalzen sogenannte motorisch betriebene Flüssigkeitsquirle eingesetzt, durch die die Strömungsverhältnisse im Inneren der doppelwandigen Kühlwalze verbessert werden sollen. Derartige Anordnungen sind jedoch teuer und störanfällig.In order to remedy the aforementioned disadvantage, so-called motor-operated liquid whorls were already used in double-walled cooling rolls, by means of which the flow conditions inside the double-walled cooling roll should be improved. However, such arrangements are expensive and prone to failure.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Kühlwalze mit einem äusseren Walzenmantel und einem konzentrisch in diesem gelagerten zylindrischen Innenkörper so zu verbessern, dass eine ausreichende Durchströmung der Kühlwalze ohne die Verwendung von zusätzlichen Hilfsmitteln und hohen Drücken möglich ist.The invention is therefore based on the object of improving a cooling roller with an outer roller shell and a cylindrical inner body mounted concentrically therein so that a sufficient flow through the cooling roller is possible without the use of additional aids and high pressures.

Diese Aufgabe wird gemäss dem Kennzeichnen des Patentanspruchs 1 gelöst. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen in Verbindung mit der Beschreibung und der Zeichnung.This object is achieved according to the characterizing part of patent claim 1. Further advantageous embodiments result from the subclaims in connection with the description and the drawing.

Durch die erfindungsgemässe Ausbildung des äusseren Walzenmantels mit einer Wasserförderspirale in Form einer Rille oder eines Leitbleches wird infolge der Rotation des äusseren Walzenmantels das Kühlmittel mit einer ausreichenden Axialgeschwindigkeit durch den zwischen dem äusseren Walzenmantel und dem feststehenden zylindrischen Innenkörper gebildeten Strömungszwischenraum gefördert, so dass eine ausreichende Kühlung der Walze gewährleistet ist.As a result of the inventive design of the outer roll shell with a water conveyor spiral in the form of a groove or a guide plate, the coolant is conveyed at a sufficient axial speed through the flow space formed between the outer roll shell and the stationary cylindrical inner body, so that sufficient cooling is achieved as a result of the rotation of the outer roll shell the roller is guaranteed.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels unter Bezugnahme auf die beiliegenden Zeichnungen im einzelnen beschrieben. In diesen zeigen:

  • Fig. 1 einen schematischen Längsschnitt durch eine Kühlwalze und
  • Fig. einen mit Leitschaufeln ausgestatteten Beruhigungsraum.
In the following the invention is described in detail using an exemplary embodiment with reference to the accompanying drawings. In these show:
  • Fig. 1 shows a schematic longitudinal section through a chill roll and
  • Fig. A calming room equipped with guide vanes.

In Fig. 1 ist schematisch eine Kühlwalze mit einem äusseren Walzenmantel 5 gezeigt, der in einer linken Seitenwand 1 in einem Lager 3 und in einer rechten Seitenwand 2 in einem Lager 4 gelagert ist. In dem äusseren Walzenmantel 5 der Kühlwalze ist als Einbauteil ein feststehender zylindrischer Verdrängungskörper 6 vorgesehen. Der Verdrängungskörper 6 ist in einer Halterung 8 an der rechten Seite in Lagern 10 und in der Seitenwand 1 an der linken Seite in einem Lager 20 ortsfest, also feststehend, angeordnet. In dem feststehenden zylindrischen Verdrängungskörper 6 verläuft eine Hohlachse 9, die an der rechten und an der linken Seite für die vorgenannte Lagerung des Verdrängungskörpers 6 verwendet wird.In Fig. 1, a cooling roll is schematically shown with an outer roll shell 5, which is mounted in a left side wall 1 in a bearing 3 and in a right side wall 2 in a bearing 4. A fixed cylindrical displacement body 6 is provided as an installation part in the outer roll shell 5 of the cooling roll. The displacement body 6 is arranged in a holder 8 on the right-hand side in bearings 10 and in the side wall 1 on the left-hand side in a bearing 20 in a stationary, ie fixed, manner. A hollow axis 9 runs in the fixed cylindrical displacement body 6 and is used on the right and on the left side for the aforementioned mounting of the displacement body 6.

Zwischen der Halterung 8 und der rechten Seitenwand 2 befindet sich ein mit dem äusseren Walzenmantel 5 fest verbundenes Antriebszahnrad 7. Zur Abdichtung der Kühlwalze sind Abschlussmanschetten bzw. Platten 11 und 12 an der Halterung 8 bzw. an der linken Seitenwand 1 befestigt.Between the holder 8 and the right side wall 2 there is a drive gear 7 which is firmly connected to the outer roller shell 5. To seal the cooling roller, end sleeves or plates 11 and 12 are fastened to the holder 8 or to the left side wall 1.

Auf der Hohlachse 9 befindet sich in der linken Seite der Darstellung ein konzentrisch auf dieser angeordnetes Zuflussrohr 18.On the hollow axis 9 there is an inflow tube 18 arranged concentrically on the left side of the illustration.

Durch die Anordnung des Rohres 18 auf der Hohlachse 9, die in diesem Abschnitt einen reduzierten Querschnitt aufweist, wird zwischen diesen ein konzentrischer Zufluss 17 gebildet, durch den das über den Kühlmittelzufluss 13 zugeführte Kühlmittel in den Kühlmittelströmungszwischenraum 19 zwischen dem äusseren Walzenmantel 5 und dem feststehenden Verdrängungskörper 6 gelangt. Für diesen Zweck ist das Zuflussrohr 18 und am rechten Ende der Kühlwalze auch die Hohlachse 9 mit entsprechenden Löchern oder Schlitzen versehen.The arrangement of the tube 18 on the hollow axis 9, which has a reduced cross section in this section, forms a concentric inflow 17 between them, through which the coolant supplied via the coolant inflow 13 into the coolant flow intermediate space 19 between the outer roller shell 5 and the stationary one Displacement body 6 arrives. For this purpose, the inflow pipe 18 and at the right end of the cooling roll, the hollow axis 9 is provided with corresponding holes or slots.

Mit Hilfe der an der Innenseite 16 des äusseren Walzenmantels 5 vorhandenen beispielsweise rillenförmigen Kühlmittelförderspirale oder eines entsprechend geformten in Achsrichtung auf der Innenseite 16 angeordneten Leitbleches erfolgt ein Transport des Kühlmittels, beispielsweise des Wassers, in Achsrichtung durch die Kühlwalze. An der rechten Seite ist ein feststehendes Wasser-Rückführ- und -Ablenkblech 15 auf der ortsfesten Hohlwalze 9 angeordnet, durch das über entsprechende Öffnungen das Kühlmittel in das Innere der Hohlwalze 9 gelangt, so dass es über den Kühlmittelabfluss 14 abgeleitet werden kann.The coolant, for example the water, is transported in the axial direction through the cooling roller with the aid of the, for example, groove-shaped coolant delivery spiral present on the inner side 16 of the outer roller shell 5 or a correspondingly shaped baffle arranged in the axial direction on the inner side 16. On the right side, a fixed water return and baffle plate 15 is arranged on the stationary hollow roller 9, through which the coolant enters the interior of the hollow roller 9 through corresponding openings, so that it can be drained off via the coolant drain 14.

Durch die Rotationsströmung entstehen Fliehkräfte, die dem zentrischen Abfluss des Kühlmittels durch die Hohlachse 9 entgegenwirken und damit einen entsprechenden Druck erfordern. Am Ende der Kühlwalze ist deshalb ein Beruhigungsraum 21 für die Rotationsströmung vorhanden. Der Beruhigungsraum 21 kann mit den in Fig. 2 gezeigten Leitschaufeln 22 ausgestattet werden. Durch die erfindungsgemässe Ausbildung der Kühlwalze wird somit in vorteilhafter Weise ohne zusätzliche Kühlmitteltransportvorrichtungen das Kühlmittel durch die Walze transportiert, wobei ein Kühlmitteldruck verhältnismässig niedrig sein kann. Da kein rotierender Wasseranschluss benötigt wird, entsteht keinerlei Verschleiss an der Wasserzuführung und dem Wasserdurchfluss zwischen dem feststehenden Innenkörper und dem rotierenden Walzenmantel. Dies ist im Vergleich zu den doppelwandigen Kühlwalzen mit rotierenden Zu- und Abflussstutzen ein weiterer wesentlicher Vorteil.The rotational flow creates centrifugal forces which counteract the central outflow of the coolant through the hollow axis 9 and thus require a corresponding pressure. At the end of the cooling roller there is therefore a calming space 21 for the rotational flow. The calming space 21 can be equipped with the guide vanes 22 shown in FIG. 2. The inventive design of the cooling roll thus advantageously transports the coolant through the roll without additional coolant transport devices, it being possible for a coolant pressure to be relatively low. Since no rotating water connection is required, there is no wear and tear on the water supply and the water flow between the fixed inner body and the rotating roller jacket. This is another significant advantage compared to the double-walled cooling rolls with rotating inlet and outlet connections.

Es versteht sich, dass die Kühlmittelförderspirale 16 bezüglich Form und Tiefe im Aussenmantel 5 der Kühlwalze als Leitblech oder Rille entsprechend den jeweiligen Anforderungen in der Praxis vom Fachmann ohne Schwierigkeit speziell festgelegt werden kann. Die Kühlmittelförderspirale 16 wurde deshalb in der Zeichnung nicht im Detail dargestellt.It goes without saying that the coolant delivery spiral 16 with respect to shape and depth in the outer jacket 5 of the cooling roll as a guide plate or groove can be specifically determined in practice by the person skilled in the art without difficulty. The coolant delivery spiral 16 was therefore not shown in detail in the drawing.

Claims (3)

1. Cooling roller with an outer rotating roller envelope mounted in side walls and a cylindrical inner body mounted concentrically in this to form an intermediate flow chamber for a coolant conveyed through the hollow shaft of the inner body, whereby the inner body is a fixed coolant displacement body, characterised in that the inner side (16) of the outer roller envelope (5) has a coolant delivery spiral, through which the coolant fed on one side radially to the intermediate coolant flow chamber (19) is delivered in the axial direction of the cooling roller, in that behind the intermediate coolant flow chamber (19) a plenum chamber (21) is provided with guide vanes (22) and that on the said side on the hollow shaft (9) a feed pipe (18) is disposed and the coolant reaches the intermediate coolant flow chamber (19) via the intermediate chamber formed between the hollow shaft (9) and the feed pipe (18), from which chamber it passes through the coolant delivery spiral via a diverting and return means (15) arranged on the hollow shaft (9) and into the hollow shaft (9) serving as a return pipe.
2. Cooling roller according to claim 1, characterised in that the coolant delivery spiral on the inner side (16) of the outer roller envelope (5) consists of a spiral-shaped recess in the roller envelope (5).
3. Cooling roller according to claim 1 or 2, characterised in that the coolant delivery spiral on the inner side (16) of the roller envelope (5) consists of a spiral-shaped deflector or guide vanes.
EP80102676A 1979-07-05 1980-05-14 Cooling roller with an outer roller envelope and an inner body Expired EP0022156B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792927198 DE2927198A1 (en) 1979-07-05 1979-07-05 COOLING ROLLER WITH AN OUTER ROLL COVER AND AN INNER BODY
DE2927198 1979-07-05

Publications (3)

Publication Number Publication Date
EP0022156A2 EP0022156A2 (en) 1981-01-14
EP0022156A3 EP0022156A3 (en) 1981-04-08
EP0022156B1 true EP0022156B1 (en) 1983-09-21

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Family Applications (1)

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EP80102676A Expired EP0022156B1 (en) 1979-07-05 1980-05-14 Cooling roller with an outer roller envelope and an inner body

Country Status (5)

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US (1) US4351386A (en)
EP (1) EP0022156B1 (en)
JP (2) JPS5620994A (en)
DD (1) DD151717A1 (en)
DE (2) DE2927198A1 (en)

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SE322471B (en) * 1966-04-28 1970-04-06 Skandinaviska Apparatind
US3625280A (en) * 1968-10-31 1971-12-07 Hunt Co Rodney Industrial roll
JPS5210192B2 (en) * 1972-04-28 1977-03-22
GB1539990A (en) * 1976-01-13 1979-02-07 Ramisch Kleinewefers Kalander Callender rollers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR520305A (en) * 1919-06-14 1921-06-23 Hans Jorgen Jensen Bigum Further training in rotary refrigeration machines
US2849951A (en) * 1954-11-01 1958-09-02 Harald H Heinrich Printing press with cooled cylinder

Also Published As

Publication number Publication date
DE2927198A1 (en) 1981-01-15
DE3064895D1 (en) 1983-10-27
JPS5620994A (en) 1981-02-27
EP0022156A3 (en) 1981-04-08
US4351386A (en) 1982-09-28
JPH0435728Y2 (en) 1992-08-24
EP0022156A2 (en) 1981-01-14
DD151717A1 (en) 1981-11-04
JPH01136279U (en) 1989-09-19

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