EP0068119B1 - Process for heating a roller, and heated roller - Google Patents

Process for heating a roller, and heated roller Download PDF

Info

Publication number
EP0068119B1
EP0068119B1 EP82104014A EP82104014A EP0068119B1 EP 0068119 B1 EP0068119 B1 EP 0068119B1 EP 82104014 A EP82104014 A EP 82104014A EP 82104014 A EP82104014 A EP 82104014A EP 0068119 B1 EP0068119 B1 EP 0068119B1
Authority
EP
European Patent Office
Prior art keywords
heatable
godet
fan blades
roller shell
heatable godet
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
EP82104014A
Other languages
German (de)
French (fr)
Other versions
EP0068119A2 (en
EP0068119A3 (en
Inventor
Kurt Müller
Armin Wirz
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter 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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0068119A2 publication Critical patent/EP0068119A2/en
Publication of EP0068119A3 publication Critical patent/EP0068119A3/en
Application granted granted Critical
Publication of EP0068119B1 publication Critical patent/EP0068119B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass

Description

Die Erfindung bezieht sich auf ein Verfahren zum Heizen einer Galette und auf eine heizbare Galette mit einem zu beheizenden, einen Hohlraum bildenden, drehbaren Rollenmantel sowie mit einer Heizvorrichtung im Hohlraum des Rollenmantels.The invention relates to a method for heating a godet and to a heatable godet with a rotatable roller jacket to be heated, forming a cavity, and with a heating device in the cavity of the roller jacket.

Es sind insofern heizbare Galetten bekannt, die das Verfahren zum Heizen einer Galette mittels eines dampfförmigen Mediums beinhalten, als zwischen dem zu beheizenden Mantel und einem Heizkörper ein hermetisch verschlossener Raum teilweise mit Flüssigkeit gefüllt wird, deren Dampf zur Wärmeabgabe mittels Kondensation am Rollenmantel verwendet wird (z.B. DAS 1804 777).Heatable godets are known which contain the method for heating a godet by means of a vaporous medium, since a hermetically sealed space between the jacket to be heated and a radiator is partially filled with liquid, the steam of which is used for heat dissipation by means of condensation on the roller jacket ( e.g. DAS 1804 777).

Solche Systeme arbeiten mit Ueberdruck im verschlossenen Raum, und haben dadurch den Nachteil, dass, um der notwendigen Festigkeit zu genügen, relativ schwere Konstruktionen notwendig sind.Such systems work with overpressure in the closed space, and have the disadvantage that, in order to meet the necessary strength, relatively heavy constructions are necessary.

Schwere Konstruktionen verursachen bei den heute gewünschten zunehmend hohen Drehzahlen Schwingungsprobleme beim Lauf solcher Galetten.Heavy constructions cause vibration problems when running such godets at the increasingly high speeds desired today.

Der Vorteil eines solchen Wärmeabgabesystems gegenüber einem ebenfalls an sich bekannten induktiv geheizten Rollenmantel besteht jedoch darin, dass die Wärmeabgabe sich örtlich nach dem Wärmebedarf richtet, indem die Wärmeabgabe proportional zur Temperaturdifferenz steigt, während in einem induktiv geheizten Rollenmantel der Nachteil besteht, dass an jeder Stelle immer die vorbestimmte Wärmemenge erzeugt wird, unabhängig vom eventuell örtlich veränderlichen Wärmebedarf. Dadurch kann eine stark ungleiche Wärmeverteilung am Rollenmantel entstehen. Durch eine ungleiche Wärmeverteilung entstehen an der Rollenoberfläche überhitzte Stellen, die z.B. bei Wickelbildung zu einem Kleben des Fadenmaterials an der Rolle führt. Rein induktiv geheizte Rollenmäntel haben andererseits den Vorteil der leichteren Bauweise. Die erwähnten Nachteile zu beheben ist Aufgabe der Erfindung.However, the advantage of such a heat emission system compared to an inductively heated roller jacket, which is also known per se, is that the heat emission depends locally on the heat requirement, in that the heat output increases in proportion to the temperature difference, whereas in an inductively heated roller jacket there is the disadvantage that at every point the predetermined amount of heat is always generated, regardless of the possibly changing heat demand. This can result in a very uneven heat distribution on the roller jacket. Uneven heat distribution creates overheated spots on the roll surface, which e.g. leads to the thread material sticking to the roll when the roll is formed. On the other hand, purely induction heated roller shells have the advantage of being lighter in design. The object of the invention is to remedy the disadvantages mentioned.

Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe verfahrensmässig dadurch, dass die Galette mittels eines gasförmigen Mediums beheizt und, dass das Medium innerhalb der Galette in einem im wesentlichen geschlossenen Kreislauf an einer Heizvorrichtung und an der Innenwand eines zu beheizenden rotierenden Rollenmantels vorbeigeführt wird.The invention, as characterized in the claims, achieves the object procedurally in that the godet is heated by means of a gaseous medium and in that the medium inside the godet is in a substantially closed circuit on a heating device and on the inner wall of a rotating one to be heated Roll jacket is passed.

Vorrichtungsmässig wird die Aufgabe dadurch gelöst, dass die Heizvorrichtung derart mit Luftleitkanälen versehen ist, dass an beiden Stirnseiten des Hohlraumes sowie zwischen der Rollenmantelinnenseite und den Luftleitkanälen ein freier Raum von U-förmigem Querschnitt, in Umfangsrichtung gesehen, gebildet wird, sowie dass der Rollenmantel in diesem freien Raum derart mit Ventilatorschaufeln versehen ist, dass bei Rotation des Rollenmantels die Luft einen durch den freien Raum und durch die Luftleitkanäle strömenden Kreislauf bildet.In terms of the device, the object is achieved in that the heating device is provided with air guide channels in such a way that a free space of U-shaped cross-section, seen in the circumferential direction, is formed on both end faces of the cavity and between the inside of the roll jacket and the air guide channels, and that the roll jacket in this free space is provided with fan blades in such a way that when the roller casing rotates, the air forms a circuit flowing through the free space and through the air guide channels.

Die durch die Erfindung erreichten Vorteile sind darin zu sehen, dass die rotierende Masse auf ein Minimum reduziert ist und dadurch eine leichte Bauweise erreicht wird, ohne die wärmetechnischen Vorteile des Standes der Technik im wesentlichen zu verlieren.The advantages achieved by the invention can be seen in the fact that the rotating mass is reduced to a minimum and a light construction is thereby achieved without essentially losing the thermal advantages of the prior art.

Vorteilhafterweise können die Ventilatorschaufeln als Radialventilatorschaufeln an einer Stirnseite des Hohlraumes am Rollenmantel angeordnet sein, so dass die Mantelinnenseite frei ist für mögliche günstige Wärmeübergangsstrukturen wie z. B. Rillen mit unterschiedlichen Tiefen und/oder schraubenförmiger Anordnung.Advantageously, the fan blades can be arranged as radial fan blades on one end face of the cavity on the roller casing, so that the inside of the casing is free for possible favorable heat transfer structures such as e.g. B. grooves with different depths and / or helical arrangement.

Ferner können die Luftkanäle an einem stationären, sich zum Rollenmantel koaxial in diesen erstreckenden Träger angeordnete Stege sein, die von einem Mantel umfasst werden und dabei strahlenförmig und mindestens im Endteil, in Strömungsrichtung gesehen, axial gestreckt auf dem Träger angeordnet sind, was den Vorteil erbringt, dass in der Strömung am Austritt aus den Kanälen kein den Unterdruck reduzierender Drall ensteht.Furthermore, the air channels can be on a stationary webs which are arranged coaxially in the roller jacket and which are encased in a jacket and are arranged radially and axially stretched on the carrier at least in the end part, as seen in the direction of flow, which provides the advantage that there is no swirl reducing the negative pressure in the flow at the outlet from the channels.

Im folgenden wird die Erfindung anhand von lediglich Ausführungswege darstellendenIn the following, the invention is illustrated by means of embodiments only

Zeichnungen näher erläutert.Drawings explained in more detail.

Es zeigen:

  • Fig. 1 ein Längsschnitt durch die Längsachse einer Galette, entsprechend der Richtung A-A, halbschematisch dargestellt,
  • Fig. 2 ein Querschnitt durch einen Teil der Galette von Fig. 1, entsprechend der Richtung B-B,
  • Fig. 3-5 je ein Querschnitt durch einen Teil der Galette von Fig. 1, entsprechend der Richtung C-C.
Show it:
  • 1 shows a longitudinal section through the longitudinal axis of a godet, corresponding to the direction AA, shown semi-schematically,
  • 2 shows a cross section through part of the godet of FIG. 1, corresponding to the direction BB,
  • Fig. 3-5 each a cross section through part of the godet of Fig. 1, corresponding to the direction CC.

Ein stationärer Träger 1 (Fig. 1) ist in einem Maschinengehäuse 2 fest angeordnet. Im Träger 1 übernehmen die Lager 3 die drehbare Lagerung eines Rollenmantels 4. Der Rollenmantel 4 umfasst einen Hohlraum 5 (Fig. 1), in welchem an einer ringförmigen Stirnseite 6 (Fig. 1) radial gestreckte Ventilatorschaufeln 7 (Fig. 1 und 2) befestigt sind.A stationary carrier 1 (FIG. 1) is fixedly arranged in a machine housing 2. In the carrier 1, the bearings 3 take over the rotatable mounting of a roller shell 4. The roller shell 4 comprises a cavity 5 (FIG. 1), in which on an annular end face 6 (FIG. 1) radially elongated fan blades 7 (FIGS. 1 and 2) are attached.

Weiter sind an einem zum Träger 1 gehörenden, sich koaxial zum Rollenmantel 4 erstreckenden Trägerarm 8 Luftkanäle 9 vorgesehen, die durch am Trägerarm 8 strahlenförmig und axial gestreckt fest angeordnete und von einem als Drehkörper ausgebildeten Mantel 10 umfasste Stege 11 (Fig. 3-5) gebildet werden. Dabei sind die Stege 11 fest mit dem Mantel 10 verbunden. Durch diesen Mantel 10 wird im Hohlraum 5 ein freier Raum von U-förmigem Querschnitt, in Umfangsrichtung gesehen, gebildet, der vom Rollenmantel 4 durch die Stirnseite 6 der Rollenmantelinnenseite 12 und einer weiteren Hohlraumstirnseite 13 begrenzt ist.Furthermore, air channels 9 are provided on a support arm 8 belonging to the support 1 and extending coaxially to the roller jacket 4, which are arranged by webs 11 (FIG. 3-5) which are fixedly arranged in a radial and axially stretched manner on the support arm 8 and are encompassed by a jacket 10. be formed. The webs 11 are firmly connected to the jacket 10. This jacket 10 forms a free space of U-shaped cross-section, seen in the circumferential direction, in the cavity 5, which is delimited by the roller jacket 4 through the end face 6 of the roller jacket inner side 12 and a further cavity end face 13.

Die Stirnseite 13 ist ein Teil des Trägers 1 und bildet mit ihrer Fortsetzung 14 und einer L-förmigen Fläche 15 am Rollenmantel 4 einen Luftspalt, der den Hohlraum 5 mit der Umgebungsluft der Galette verbindet. Der Träger 1 mit den Lagern 3, den Kanälen 9, und der Rollenmantel 4 mit den Ventilatorschaufeln 7 wird zusammen als sogenannte Galette bezeichnet.The end face 13 is part of the carrier 1 and forms with its continuation 14 and an L-shaped surface 15 on the roller shell 4 an air gap which connects the cavity 5 with the Ambient air connects the godet. The carrier 1 with the bearings 3, the channels 9, and the roller jacket 4 with the fan blades 7 is collectively referred to as a so-called godet.

Bei Rotation des Rollenmantels 4 entsteht durch die Ventilatorschaufeln 7 einerseits ein Luftkreislauf mit einer Richtungskomponente in Richtung K und anderseits einer Richtungskomponente in Umlaufrichtung des Rollenmantels 4, aus der eine resultierende Strömungsrichtung K' (nicht gezeigt) gebildet wird.When the roller shell 4 rotates, the fan blades 7 on the one hand create an air circuit with a directional component in the direction K and on the other hand a directional component in the circumferential direction of the roller shell 4, from which a resulting flow direction K '(not shown) is formed.

Aus strömungstechnischen Gründen sind die Radien r vorgesehen.The radii r are provided for fluidic reasons.

Die gestreckten, radial gerichteten Ventilatorschaufeln 7 gestattqn eine Umkehrung der Drehrichtung des Rollenmantels 4 ohne Verschlechterung der Strömungscharakteristik.The elongated, radially directed fan blades 7 permit a reversal of the direction of rotation of the roller shell 4 without a deterioration in the flow characteristics.

Ebenfalls können die Ventilatorschaufeln 7 bei einer bestimmten Drehrichtung als vor- oder rückwärtsgekrümmte Ventilatorschaufeln ausgebildet werden mit der aus der Ventilatortechnik an sich bekannten prinzipiellen Veränderung der Strömungscharakteristik.Likewise, the fan blades 7 can be designed in a certain direction of rotation as forward or backward curved fan blades with the basic change in the flow characteristics known per se from fan technology.

Weiter besteht die Möglichkeit den Trägerarm 8, wie in Fig. 1 gezeigt, mit einer Bohrung 16 und einem Druckluftanschluss 17 zu versehen, um den Hohlraum 5 mit Druckluft zur Bildung eines kleinen Ueberdrucks zu versorgen und damit eine Verschmutzung durch z.B. Appreturdämpfe zu vermeiden. Das dadurch im Hohlraum 5 überschüssige kleine Luftvolumen entweicht durch den Luftspalt entlang der L-förmigen Fläche 15.There is also the possibility of providing the support arm 8, as shown in FIG. 1, with a bore 16 and a compressed air connection 17 in order to supply the cavity 5 with compressed air to form a small excess pressure and thus contamination by e.g. Avoid finishing fumes. The small air volume which is thereby excess in the cavity 5 escapes through the air gap along the L-shaped surface 15.

Die Fig. 3-5 zeigen je Variationen von . Heizelementen die zusammen mit den Stegen 11 und evt. zusammen mit dem Mantel 10 die Heizvorrichtungen bilden.3-5 each show variations of. Heating elements which together with the webs 11 and possibly together with the jacket 10 form the heating devices.

Beispielsweise sind wie in Figur 3 gezeigt die Heizelemente in den Kanälen 9 vorgesehene Heizmatten 18, die umfänglich am Mantel 10 und beidseits der Stege 11, d.h. umfänglich in den Kanälen 9 anliegend angeordnet sind.For example, as shown in Figure 3, the heating elements in the channels 9 are provided heating mats 18, which are circumferentially on the jacket 10 and on both sides of the webs 11, i.e. are arranged circumferentially in the channels 9.

Ebenso können die Heizelemente, wie in Figur 5 gezeigt, in den Stegen 11 vorgesehene Heizstäbe 20 sein. Die Stege 11 werden, um dies zu ermöglichen, wie in den genannten Figuren gezeigt, entsprechend geformt.Likewise, as shown in FIG. 5, the heating elements can be heating rods 20 provided in the webs 11. To enable this, the webs 11 are shaped accordingly, as shown in the figures mentioned.

Weiter können Heizspiralen 19 (Fig. 4) in den Kanälen 9 als Heizelemente vorgesehen sein. Der Rollenmantel 4 bildet zusammen mit einer Stirnwand 21 und einer Welle 22 eine in den Lagern 3 erkennbare Einheit.Furthermore, heating spirals 19 (FIG. 4) can be provided in the channels 9 as heating elements. The roller jacket 4 forms, together with an end wall 21 and a shaft 22, a unit which can be seen in the bearings 3.

Um die Wärme intensiver an die Rollenmantelinnenseite abzugeben, kann diese mit Rillen (nicht gezeigt) versehen werden. Die Rillentiefe kann dabei im umgekehrten Verhältnis zur abnehmenden Temperatur der strömenden Luft zunehmen. Ebenfalls können die Rillen axial gerichtet oder schraubenförmig oder gekreuzt schraubenförmig angeordnet sein.In order to give off the heat more intensively to the inside of the roll shell, it can be provided with grooves (not shown). The groove depth can increase in inverse proportion to the decreasing temperature of the flowing air. The grooves can also be arranged axially or helically or crossed helically.

Claims (19)

1. Method of heating a godet characterised in that the godet is heated by a gaseous medium, and in that within the godet the medium is led in a substantially closed circulation (K) past a heating device (9, 18, 19, 20) and the interior wall (12) of a rotating roller shell (4) which is to be heated.
2. Method according to claim 1 characterised in that the circulation (K) is created during rotation of the roller shell (4) by radial acceleration of the medium, the acceleration being caused by projections arranged on the interior of the end face of the godet.
3. Method according to claims 1 and 2 characterised in that the heating device comprises heating elements (18,19, 20) including air guide passages (9) through which the medium flows prior to radial acceleration thereof.
4. A heatable godet with a rotatable roller shell (4), which is to be heated and which forms a chamber (5), and with a heating device (9, 18, 19, 20) in the chamber (5) of the roller shell (4), characterised in that the heating device (9, 18, 19, 20) is provided with air guide passages (9) such that at both end faces (6, 13) of the chamber (5) and between the interior (12) of the roller shell and the air guide passages (9) a free space of U-shaped cross section, as viewed in the circumferential direction, is formed, and in that the roller shell (4) is provided with fan blades (7) in this free space in such manner that upon rotation of the roller shell (4) the air flows in circulation through the free space and the air guide passages (9).
5. Heatable godet according to claim 4 characterised in that the fan blades (7) are arranged as radial fan blades on an end face (6) of the chamber (5).
6. Heatable godet according to claim 5 characterised in that the fan blades (7) are provided as radially extending blades.
7. Heatable godet according to claim 5 characterised in that the fan blades (7) are provided as socalled forwardly curved radial fan blades.
8. Heatable godet according to claim 5 characterised in that the fan blades (7) are provided as socalled rearwardly curved radial fan blades.
9. Heatable godet according to claim 4 characterised in that the air passages (9) are formed by ribs (11) contained within a shell (10), the ribs (11) being mounted on a stationary support arm (8) extending into the roller shell (4) coaxially thereto.
10. Heatable godet according to claim 9 characterised in that the ribs (11) are arranged radiating from the support arm (8) and at least in the end portion extend axially on the support arm as viewed in the direction of flow. 11. Heatable godet according to claim 4 characterised in that the interior (12) of the roller shell is provided with grooves.
12. Heatable godet according to claim 11 characterised in that the depth of the groove increases in inverse relationship to the reducing temperature of the flowing air.
13. Heatable godet according to claim 11 characterised in that the grooves extend axially.
14. Heatable godet according to claim 11 characterised in that the grooves extend spiral- fashion.
15. Heatable godet according to claim 11 characterised in that the grooves are arranged as intersecting spirals.
16. Heatable godet according to claim 9 characterised in that the shell (10) is formed at its circumference as a body of rotation.
17. Heatable godet according to claim 4 characterised in that the heating device comprises heating elements in the form of heater rods (20) bedded in the ribs (11).
18. Heatable godet according to claim 4 characterised in that the heating device comprises heating elements in the form of heater mats (18) provided in the passages (9).
19. Heatable godet according to claim 4 characterised in that the heating device comprises heating elements in the form of heater spirals (19) provided in the passages.
EP82104014A 1981-06-15 1982-05-08 Process for heating a roller, and heated roller Expired EP0068119B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH391481 1981-06-15
CH3914/81 1981-06-15

Publications (3)

Publication Number Publication Date
EP0068119A2 EP0068119A2 (en) 1983-01-05
EP0068119A3 EP0068119A3 (en) 1983-05-18
EP0068119B1 true EP0068119B1 (en) 1986-01-15

Family

ID=4266210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104014A Expired EP0068119B1 (en) 1981-06-15 1982-05-08 Process for heating a roller, and heated roller

Country Status (5)

Country Link
US (2) US4443689A (en)
EP (1) EP0068119B1 (en)
JP (1) JPS57208312A (en)
DE (1) DE3268502D1 (en)
IN (1) IN158418B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142784A (en) * 1990-05-01 1992-09-01 F.H. Maloney Company Method for making a roller assembly for grain shellers
KR0148507B1 (en) * 1994-10-07 1998-12-01 김광호 Heater roller for fixing electronic photo device
DE19610763A1 (en) * 1996-03-19 1997-09-25 Zinser Textilmaschinen Gmbh Heated godet for heating synthetic threads
US5983993A (en) * 1996-08-30 1999-11-16 International Paper Company High production chill roll
US5920961A (en) * 1997-11-10 1999-07-13 John D. Hollingsworth On Wheels, Inc. Ventilating carding roll
DE102005029767A1 (en) * 2005-06-24 2007-01-04 TRüTZSCHLER GMBH & CO. KG Device on a spinning preparation machine, in particular carding machine, carding machine, cleaner o. The like., With a cooling system
DE102007015826A1 (en) * 2007-03-30 2008-10-02 TRüTZSCHLER GMBH & CO. KG Device on a textile machine, in particular spinning preparation machine, for cooling of heat-emitting electrical components
JP2015128465A (en) * 2014-01-06 2015-07-16 日本電産株式会社 dryer
JP2015128466A (en) * 2014-01-06 2015-07-16 日本電産株式会社 dryer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753463A (en) * 1952-10-04 1956-07-03 Univ California Atomic energy radiation meter
GB992436A (en) * 1963-03-08 1965-05-19 Tmm Research Ltd Improvements in electrically heated rollers
DE1965308U (en) * 1966-12-30 1967-08-03 Barmag Barmer Maschf ELECTRICALLY HEATED, IN PARTICULAR INDUCTIVELY HEATED GALETTE.
DE1806618A1 (en) * 1968-11-02 1970-05-21 Edmund Erdmann Fa Heating device for rotating rollers
FR2026051A1 (en) * 1968-12-13 1970-09-11 Rieter Ag Maschf
US3600550A (en) * 1969-09-11 1971-08-17 Mitsubishi Heavy Ind Ltd Method of and apparatus for heating a rotary roll
CH573992A5 (en) * 1973-11-02 1976-03-31 Rieter Ag Maschf
GB1588926A (en) * 1976-09-27 1981-04-29 Ricoh Kk Heat fixing apparatus

Also Published As

Publication number Publication date
DE3268502D1 (en) 1986-02-27
EP0068119A2 (en) 1983-01-05
JPS57208312A (en) 1982-12-21
US4443689A (en) 1984-04-17
IN158418B (en) 1986-11-15
EP0068119A3 (en) 1983-05-18
US4497626A (en) 1985-02-05

Similar Documents

Publication Publication Date Title
EP1218186B1 (en) Cylinder of a rotation printing machine
EP0553447B1 (en) Cooling system for printing plates in a printing machine
EP0068119B1 (en) Process for heating a roller, and heated roller
DE60015278T2 (en) Rotary chill roll
EP0253903A1 (en) Method for cooling of an eddy-current power brake
DE1551460A1 (en) Heat exchanger
DE4202033C2 (en) Heating or cooling roller
EP0305706A2 (en) Rotary drum
EP0189855A2 (en) Apparatus for evenly directing a gas towards a flat surface
CH633219A5 (en) EXTRUDER FOR PLASTICS SENSITIVE TO HIGH TEMPERATURE.
DE19616427C2 (en) Drive unit with a motor and a retarder
DE3229471C2 (en) Cooling system for a rotating roller
DE2744918C2 (en) Cooling device for machine parts, in particular shafts and shaft bearings
DE2417067A1 (en) Heating/cooling jacket for plastics processing - esp for plasticizer cyli-nder of extruder has electrical heater elements and coolant pipes
WO2020249541A1 (en) Device for producing a multi-component mixture and method for operating said type of device
DE2249519A1 (en) HEATED ROLLER FOR TREATMENT OF TEXTILE YARN
EP0548021B1 (en) Cooling apparatus
DE19538841A1 (en) Cylindrical abrasive wheel for manufacturing non metallic particles, especially rubber
DE19751529C2 (en) Heater using fluid friction heat
DE19733750C2 (en) Heating device with a viscous fluid
DE19732112C2 (en) Viscose heater
DE3810052A1 (en) Cooling arrangement
EP1529878A1 (en) Calender roll
DE3909134A1 (en) SEALING PLATE CALENDAR
DE3436483A1 (en) Heatable galette

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19831004

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: GUZZI E RAVIZZA S.R.L.

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3268502

Country of ref document: DE

Date of ref document: 19860227

R20 Corrections of a patent specification

Effective date: 19860407

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870531

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19880508

BERE Be: lapsed

Owner name: MASCHINENFABRIK RIETER A.G.

Effective date: 19880531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19881201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890131

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19890531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950418

Year of fee payment: 14

Ref country code: CH

Payment date: 19950418

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960531

Ref country code: CH

Effective date: 19960531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970201