[go: up one dir, main page]

EP0608402B1 - Process and device for consolidating and coating an air-core coil - Google Patents

Process and device for consolidating and coating an air-core coil Download PDF

Info

Publication number
EP0608402B1
EP0608402B1 EP93917433A EP93917433A EP0608402B1 EP 0608402 B1 EP0608402 B1 EP 0608402B1 EP 93917433 A EP93917433 A EP 93917433A EP 93917433 A EP93917433 A EP 93917433A EP 0608402 B1 EP0608402 B1 EP 0608402B1
Authority
EP
European Patent Office
Prior art keywords
air
station
coil
core
core choke
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 - Lifetime
Application number
EP93917433A
Other languages
German (de)
French (fr)
Other versions
EP0608402A1 (en
Inventor
Johann Falk
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.)
Isovolta AG
Original Assignee
Isovolta Osterreichische Isolierstoffwerke AG
Isovolta 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 Isovolta Osterreichische Isolierstoffwerke AG, Isovolta AG filed Critical Isovolta Osterreichische Isolierstoffwerke AG
Publication of EP0608402A1 publication Critical patent/EP0608402A1/en
Application granted granted Critical
Publication of EP0608402B1 publication Critical patent/EP0608402B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/002—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/122—Insulating between turns or between winding layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/127—Encapsulating or impregnating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/02—Fixed inductances of the signal type without magnetic core

Definitions

  • the invention relates to a method for solidifying and coating an ironless air throttle, the coil of which is constructed from a single or multi-layer winding of bare, electrically conductive, twisted from metal wires ropes of substantially rectangular cross-section, in which in a soaking process liquid thermosetting synthetic resin mixture within Ropes penetrate into the spaces between the metal wires and form a film on the surface of the coil, after which the air throttle is heat-treated and the synthetic resin mixture it absorbs is cured. It also relates to an advantageous device for performing this method.
  • the impregnation process is carried out by immersing in a bath of a synthetic resin mixture consisting of a thermosetting synthetic resin, a hardener and an accelerator.
  • a synthetic resin mixture consisting of a thermosetting synthetic resin, a hardener and an accelerator.
  • relatively large amounts of resin mixture must be placed in the resin container, with only a very small part of it being absorbed by the impregnated throttle during each impregnation process.
  • GB-A-1,157,952 also discloses a trickle impregnation method for electrical windings of stators, in which the impregnating resin / hardener mixture is applied in metered amounts to the upper winding head of the stator via trickling nozzles.
  • this type of impregnation has the disadvantage that if the impregnation resin hardener quantity is calculated inaccurately, only a low resin application and thus an insufficient coating of the electrical winding is achieved.
  • the invention seeks to remedy this.
  • the method according to the invention as characterized in claims 1-3, solves the problem of being able to make do with a significantly lower resin supply during the impregnation process than by immersing the known impregnation process mentioned above.
  • the device according to the invention according to claims 4-8 for carrying out the method according to the invention represents a new, particularly favorable mechanical engineering solution.
  • FIG. 1 shows an ironless air throttle 3 to be treated, which here consists of a single-layer coil of bare, electrically conductive, twisted metal wire ropes of rectangular cross-section, with several glass fiber tapes distributed over the circumference of the coil and running in the coil axis (from FIG 1 not visible) serve as a spacer between adjacent turns of the coil.
  • Fig. 2 shows in a partial cross section (detail 4) the ropes 5 and the glass fiber ribbons 7 running in the direction of the arrow 6, which have folds 8 which are pushed into the spaces between adjacent turns.
  • the coil is held together on the top and bottom by two holding stars connected by a central axis 9.
  • the axis 9 has a mounting eyelet, via which the air throttle 3 is mounted on the underside of a turntable 10.
  • 11 with a chain conveyor mounted on the ceiling structure 12 of the workshop is designated, which serves to support the air throttle 3 in the hanging state or to transport it (perpendicular to the plane of the drawing).
  • the suspension is carried out by means of suspension elements 13 rotatably arranged in the chain conveyor, each of which has an eyelet at its lower end, in which the turntable 10 together with the air throttle 3 hanging on it is suspended by means of a hook 14.
  • the impregnation station 2 (FIG. 1) further comprises a spray lance 16 which extends between the upper edge of the air throttle 3 and the rotating ring 10 and which is provided with an actuator 15 and has a slot-shaped nozzle opening which is adjustable in length by means of the actuator 15.
  • the spray lance 16 is connected to a resin supply system comprising a pump 17 and a reservoir 18. Under the suspended air throttle 3, a drip pan 19 is provided with a resin return 20 in the resin supply system.
  • a drive device 21 with a pivoting part 22, which has a drive pinion 23, which can be brought into engagement with the rotating ring 10 serves to rotate the air throttle 3.
  • the overall device for carrying out the method according to the invention has a number of work or treatment stations between which the air throttles 3, each provided with a rotating ring 10, are moved by means of a chain conveyor system.
  • the device shown schematically in FIG. 3 has two chain conveyors 11 and 25 coupled to one another via a switch 24.
  • the chain conveyor 11 serves a loading station 26, a preheating station 27, the impregnation station 2 and a curing station 28, while the chain conveyor 25 serves to operate a station 29 for manual treatment with several positions, which simultaneously functions as an unloading station, and a painting station 30.
  • the Chain conveyors 11 and 25 are of the known type "Power and Free", in which transport elements which are movable along a transport chain are provided, which have suspension elements 13 which are rotatably mounted about a vertical axis and which are locked or locked in the various work or treatment stations - When the lock is released, it can be coupled to the transport chain and taken away by it.
  • the preheating stations 27 and the curing station 28, which are hot-air ovens, and the cabin-like painting station 30 each have a slot (not visible in FIG. 3) at the entrance or exit of double doors 31 and on their ceiling in the transport direction, through which the receiving elements 13 pass through, so that the air restrictors 3 together with the turntable 10 can be brought into the preheating station 27, the curing station 28 or the painting station 30.
  • the air throttles 3 to be treated are each connected to a treatment unit 32 with a rotating ring 10.
  • a treatment unit 32 is now suspended in the loading station 26 in the eyelet of a suspension element 13 and brought by means of the chain conveyor 11 into the preheating station 27, in which the air throttle 3 is thoroughly dried at approximately 130-150 ° C.
  • the treatment unit 32 is then transported to the impregnation station 2, the heart of the device.
  • the drive pinion 23 of the drive device 21 is first brought into engagement with the slewing ring 10 by pivoting the pivoting part 22. Then the drive device 21 is switched on and the turntable 10 together with the air throttle 3 is set in slow rotation.
  • the peripheral speed of the air throttle 3 is less than 4 cm / s, but advantageously e.g. 2 cm / s.
  • a curable liquid synthetic resin mixture advantageously an epoxy resin-hardener mixture optionally containing an accelerator, is now supplied from the storage container 18 by means of the pump 17 to the spray lance 16.
  • the synthetic resin mixture then emerges from the slot-shaped nozzle opening in the form of a flat jet 33 which tapers in width and then runs downward on the inside and outside of the coil of the rotating air throttle 1.
  • the glass fiber tapes 6 are impregnated with the synthetic resin mixture and the surfaces of the electrically conductive ropes 2 of the coil are covered with a film from which the synthetic resin mixture penetrates into the spaces between the metal wires that form the ropes 4.
  • the air throttle is poured with the synthetic resin mixture e.g. for 10 min, after which it is drained for a further 10 min. In total, about ten times the amount of synthetic resin that ultimately remains on the air throttle is poured onto it.
  • the treatment unit 32 is brought into the curing station 28, where the air throttle 3 is cured at a temperature of about 160 to 180 ° C.
  • the dwell time of the air throttle in the curing station 28 is e.g.
  • the treatment units 32 are transferred from the chain conveyor 11 to the chain conveyor 25 via the switch 24 and from there to the station 29 for manual treatment, which has several positions and at the same time serves as a buffer store for the treatment units 32.
  • the station 29 for manual treatment which has several positions and at the same time serves as a buffer store for the treatment units 32.
  • various manual tasks can be performed on the rotatably suspended air throttles, in particular covering certain areas of the air throttle 3 for the subsequent painting process.
  • the treatment units 31 are then transported to the painting station 30 by means of the chain conveyor 25 and the air throttles 3 are subjected to a painting there and then returned to the station 29, where e.g. the paint covers are removed again and the treatment units 32 are unloaded, after which the turntables 10 are removed from the finished air restrictors 3.
  • thermosetting synthetic resin mixture A method for fastening and coating an ironless air throttle by impregnation with the lowest possible liquid, thermosetting synthetic resin mixture and a device for carrying out the method are specified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Insulating Of Coils (AREA)

Abstract

A process is disclosed for consolidating and coating an air-core coil (3) with a winding made of naked electroconductive cables (5) made of twisted wires of substantially rectangular cross-section wound one or several times. A liquid duroplastic synthetic resin mixture is poured on the upper end of the pre-dried coil of the air-core coil rotated around its vertical axis in an impregnating station and flows downwards along the inner and outer surfaces of the coil, if required also between the layers of the coil winding, partially entering the intermediate spaces between the wires of which the conductive cable (5) is composed. The excess of synthetic resin mixture is collected and re-used, and the air-core coil (3) is then cured at a higher temperature. A device for carrying out the process has a chain conveyor system which moves hanging treatment units constituted of a revolving ring (10) to which is secured the air-core coil (3) between several working or processing stations. In the impregnating station (2) the revolving ring (10) is coupled to a driving device (21) in order to rotate the air-core coil (3).

Description

Die Erfindung betrifft ein Verfahren zum Verfestigen und Beschichten einer eisenlosen Luftdrossel, deren Spule aus einer ein- oder mehrlagigen Wicklung von blanken, elektrisch leitenden, aus Metalldrähten verdrillten Seilen von im wesentlichen rechteckigem Querschnitt aufgebaut ist, bei dem in einem Tränkvorgang flüssiges duroplastisches Kunstharzgemisch innerhalb der Seile in die Zwischenräume zwischen den Metalldrähten eindringt und an der Spulenoberfläche einen Film bildet, wonach die Luftdrossel wärmebehandelt und das von ihr aufgenommene Kunstharzgemisch dabei ausgehärtet wird. Sie betrifft ferner eine vorteilhafte Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for solidifying and coating an ironless air throttle, the coil of which is constructed from a single or multi-layer winding of bare, electrically conductive, twisted from metal wires ropes of substantially rectangular cross-section, in which in a soaking process liquid thermosetting synthetic resin mixture within Ropes penetrate into the spaces between the metal wires and form a film on the surface of the coil, after which the air throttle is heat-treated and the synthetic resin mixture it absorbs is cured. It also relates to an advantageous device for performing this method.

Stand der TechnikState of the art

Bei den üblichen verfahren der vorgenannten Art erfolgt der Tränkvorgang durch Eintauchen in ein Bad eines aus einem duroplastischen Kunstharz, einem Härter sowie einem Beschleuniger bestehenden Kunstharzgemisches. Bei diesem verfahren müssen aber relativ große Mengen an Harzgemisch in dem Harzbehälter vorgelegt werden, wobei bei jedem Tränkvorgang nur ein sehr kleiner Teil davon von der getränkten Drossel aufgenommen wird. Ferner ist aus der GB-A-1,157.952 ein Träufelimprägnier-Verfahren für elektrische Wicklungen von Statoren bekannt, bei welchem das Imprägnierharz/Härter-Gemisch in dosierten Mengen über Träufeldüsen auf den oberen Wickelkopf des Stators aufgebracht wird. Diese Art der Imprägnierung hat jedoch den Nachteil, daß bei ungenauer Berechnung der Imprägnierharz-Härtermenge lediglich ein niedriger Harzauftrag und damit eine unzureichende Beschichtung der elektrischen Wicklung erzielt wird.In the usual processes of the aforementioned type, the impregnation process is carried out by immersing in a bath of a synthetic resin mixture consisting of a thermosetting synthetic resin, a hardener and an accelerator. In this process, however, relatively large amounts of resin mixture must be placed in the resin container, with only a very small part of it being absorbed by the impregnated throttle during each impregnation process. GB-A-1,157,952 also discloses a trickle impregnation method for electrical windings of stators, in which the impregnating resin / hardener mixture is applied in metered amounts to the upper winding head of the stator via trickling nozzles. However, this type of impregnation has the disadvantage that if the impregnation resin hardener quantity is calculated inaccurately, only a low resin application and thus an insufficient coating of the electrical winding is achieved.

Darstellung der ErfindungPresentation of the invention

Hier will die Erfindung Abhilfe schaffen. Das erfindungsgemäße verfahren, wie es in den Ansprüchen 1 - 3 gekennzeichnet ist, löst die Aufgabe, beim Tränkvorgang mit einem wesentlich geringeren Harzvorrat auskommen zu können als bei obengenanntem bekannten Tränkvorgang durch Eintauchen. Die erfindungsgemäße Vorrichtung gemäß den Ansprüchen 4 - 8 zur Durchführung des erfindungsgemäßen Verfahrens stellt eine neue besonders günstige maschinenbautechnische Losung dar.The invention seeks to remedy this. The method according to the invention, as characterized in claims 1-3, solves the problem of being able to make do with a significantly lower resin supply during the impregnation process than by immersing the known impregnation process mentioned above. The device according to the invention according to claims 4-8 for carrying out the method according to the invention represents a new, particularly favorable mechanical engineering solution.

Beschreibung der FigurenDescription of the figures

Die Erfindung wird nachstehend anhand der Figuren eingehend erläutert:

  • Fig. 1 zeigt in schematischer Darstellung im Aufriß in Richtung des Pfeiles 1 (siehe Fig. 3) die Tränkstation 2 der Vorrichtung,
  • Fig. 2 zeigt einen Teilquerschnitt von Fig. 1 und Fig. 3 eine schematische Darstellung der Gesamtvorrichtung.
The invention is explained in detail below with reference to the figures:
  • Fig. 1 shows a schematic representation in elevation in the direction of arrow 1 (see Fig. 3) the impregnation station 2 of the device,
  • Fig. 2 shows a partial cross section of Fig. 1 and Fig. 3 is a schematic representation of the overall device.

In Fig. 1 erkennt man eine zu behandelnde eisenlose Luftdrossel 3, die hier aus einer einlagigen Spule von blanken, elektrisch leitenden, aus Metalldrähten verdrillten Seilen von rechteckigem Querschnitt besteht, wobei mehrere über dem Umfang der Spule verteilte in der Spulenachse verlaufende Glasfaserbänder (aus Fig. 1 nicht ersichtlich) als Abstandshalter zwischen benachbarten Windungen der Spule dienen. Fig. 2 zeigt in einem Teilquerschnitt (Ausschnitt 4) die Seile 5 sowie die in Richtung des Pfeiles 6 verlaufenden Glasfaserbänder 7, die Faltungen 8 aufweisen, welche in die Zwischenräume zwischen benachbarten Windungen hineingestossen sind. Die Spule wird an der Ober- und Unterseite durch zwei durch eine zentrale Achse 9 miteinander verbundene Haltesterne zusammengehalten. Die Achse 9 weist an ihrem oberen Ende eine Montage- öse auf, über welche die Luftdrossel 3 an der Unterseite eines Drehkranzes 10 montiert ist. Mit 11 ist ein an der Deckenkonstruktion 12 der Werkhalle montierter Kettenförderer bezeichnet, der zur Unterstützung der Luftdrossel 3 im hängenden Zustand bzw. zu deren Transport (senkrecht zur Zeichnungsebene) dient. Die Aufhängung erfolgt über mit im Kettenförderer drehbar angeordnete Aufhängeelemente 13, die an ihrem unteren Ende jeweils eine Öse aufweisen, in dem der Drehkranz 10 samt der an ihm hängenden Luftdrossel 3 mittels eines Hakens 14 eingehängt ist.1 shows an ironless air throttle 3 to be treated, which here consists of a single-layer coil of bare, electrically conductive, twisted metal wire ropes of rectangular cross-section, with several glass fiber tapes distributed over the circumference of the coil and running in the coil axis (from FIG 1 not visible) serve as a spacer between adjacent turns of the coil. Fig. 2 shows in a partial cross section (detail 4) the ropes 5 and the glass fiber ribbons 7 running in the direction of the arrow 6, which have folds 8 which are pushed into the spaces between adjacent turns. The coil is held together on the top and bottom by two holding stars connected by a central axis 9. At its upper end, the axis 9 has a mounting eyelet, via which the air throttle 3 is mounted on the underside of a turntable 10. 11 with a chain conveyor mounted on the ceiling structure 12 of the workshop is designated, which serves to support the air throttle 3 in the hanging state or to transport it (perpendicular to the plane of the drawing). The suspension is carried out by means of suspension elements 13 rotatably arranged in the chain conveyor, each of which has an eyelet at its lower end, in which the turntable 10 together with the air throttle 3 hanging on it is suspended by means of a hook 14.

Die Tränkstation 2 (Fig. 1) umfaßt ferner eine zwischen Oberkante der Luftdrossel 3 und dem Drehkranz 10 hineinreichende, mit einem Stellantrieb 15 versehene Spritzlanze 16, die an ihrer Unterseite eine mittels des Stellantriebes 15 in ihrer Länge verstellbare schlitzförmige Düsenöffnung aufweist. Die Spritzlanze 16 ist an ein eine Pumpe 17 und einem Vorratsbehälter 18 umfassendes Harzzuführungssystem angeschlossen. Unter der aufgehängten Luftdrossel 3 ist eine Auffangswanne 19 vorgesehen mit einer Harzrückführung 20 in das Harzzuführungssystem. Zum Drehen der Luftdrossel 3 dient eine Antriebseinrichtung 21 mit einem Verschwenkteil 22, der ein Antriebsritzel 23 aufweist, das mit dem Drehkranz 10 in Eingriff gebracht werden kann.The impregnation station 2 (FIG. 1) further comprises a spray lance 16 which extends between the upper edge of the air throttle 3 and the rotating ring 10 and which is provided with an actuator 15 and has a slot-shaped nozzle opening which is adjustable in length by means of the actuator 15. The spray lance 16 is connected to a resin supply system comprising a pump 17 and a reservoir 18. Under the suspended air throttle 3, a drip pan 19 is provided with a resin return 20 in the resin supply system. A drive device 21 with a pivoting part 22, which has a drive pinion 23, which can be brought into engagement with the rotating ring 10 serves to rotate the air throttle 3.

Die Gesamtvorrichtung zur Durchführung des erfindungsgemäßen Verfahrens weist eine Reihe von Arbeits- bzw. Behandlungsstationen auf, zwischen denen die jeweils mit einem Drehkranz 10 versehenen Luftdrosseln 3 mittels eines Kettenförderersystems bewegt werden. Die in Fig. 3 schematisch dargestellte Vorrichtung weist zwei über eine Weiche 24 miteinander gekoppelte Kettenförderer 11 und 25 auf. Der Kettenförderer 11 bedient dabei eine Beladestation 26, eine Vorvärmstation 27, die Tränkstation 2 und eine Aushärtestation 28, während der Kettenförderer 25 zur Bedienung einer Station 29 zur manuellen Behandlung mit mehreren Positionen, die gleichzeitig als Entladestation fungiert, und einer Lackierstation 30 dient. Die Kettenförderer 11 und 25 sind vom bekannten Typ "Power and Free", bei welchen längs einer Transportkette bewegbare Transportelemente vorgesehen sind, die Aufhängeelemente 13 aufweisen, welche um eine vertikale Achse drehbar gelagert sind, und die in den diversen Arbeits- bzw. Behandlungssstationen verriegelt bzw. - bei freigegebener Verriegelung mit der Transportkette gekoppelt und von dieser mitgenommen werden. Die Vorwärmstationen 27 und die Aushärtestation 28, die Heißluftöfen sind, sowie die kabinenartige Lackierstation 30 weisen jeweils am Ein- bzw. Ausgang Doppeltüren 31 sowie an ihrer Decke in Transportrichtung einen (aus Fig. 3 nicht ersichtlichen) Schlitz auf, durch den die Aufnahmeelemente 13 hindurchreichen, so daß sich jeweils die Luftdrosseln 3 samt Drehkranz 10 in die Vorwärmestation 27, die Aushärtestation 28 bzw. die Lackierstation 30 verbracht werden können.The overall device for carrying out the method according to the invention has a number of work or treatment stations between which the air throttles 3, each provided with a rotating ring 10, are moved by means of a chain conveyor system. The device shown schematically in FIG. 3 has two chain conveyors 11 and 25 coupled to one another via a switch 24. The chain conveyor 11 serves a loading station 26, a preheating station 27, the impregnation station 2 and a curing station 28, while the chain conveyor 25 serves to operate a station 29 for manual treatment with several positions, which simultaneously functions as an unloading station, and a painting station 30. The Chain conveyors 11 and 25 are of the known type "Power and Free", in which transport elements which are movable along a transport chain are provided, which have suspension elements 13 which are rotatably mounted about a vertical axis and which are locked or locked in the various work or treatment stations - When the lock is released, it can be coupled to the transport chain and taken away by it. The preheating stations 27 and the curing station 28, which are hot-air ovens, and the cabin-like painting station 30 each have a slot (not visible in FIG. 3) at the entrance or exit of double doors 31 and on their ceiling in the transport direction, through which the receiving elements 13 pass through, so that the air restrictors 3 together with the turntable 10 can be brought into the preheating station 27, the curing station 28 or the painting station 30.

Für die Durchführung des Verfahrens werden die zu behandelnden Luftdrosseln 3 jeweils mit einem Drehkranz 10 zu einer Behandlungseinheit 32 verbunden. Eine solche Behandlungseinheit 32 wird nun in der Beladestation 26 in die Öse eines Aufhängeelementes 13 eingehängt und mittels des Kettenförderers 11 in die Vorwärmstation 27 verbracht, in welcher die Luftdrossel 3 bei etwa 130 - 150°C gründlich getrocknet wird. Danach erfolgt der Transport der Behandlungseinheit 32 in die Tränkstation 2, dem Kernstück der Vorrichtung. Hier wird zunächst das Antriebsritzel 23 der Antriebseinrichtung 21 durch Verschwenken des Verschwenkteiles 22 mit dem Drehkranz 10 in Eingriff gebracht. Danach wird die Antriebsvorrichtung 21 eingeschaltet und der Drehkranz 10 samt Luftdrossel 3 in langsame Drehung versetzt. Die Umfangsgeschwindigkeit der Luftdrossel 3 beträgt dabei weniger als 4 cm/s, vorteilhaft aber z.B. 2 cm/s. Aus dem Vorratsbehälter 18 wird nun ein aushärtbares flüssiges Kunstharzgemisch, vorteilhaft ein gegebenenfalls einen Beschleuniger enthaltendes Epoxiharz-Härtergemisch, mittels über die Pumpe 17 der Spritzlanze 16 zugeführt. Das Kunstharzgemisch tritt dann aus der schlitzförmigen Düsenöffnung in Form eines flachen, in seiner Breite sich verjüngenden Strahles 33 aus und rinnt dann an der Innen- und Außenseite der Spule der sich drehenden Luftdrossel 1 nach unten. Dabei werden die Glasfaserbänder 6 mit dem Kunstharzgemisch imprägniert und die Oberflächen der elektrisch leitenden Seile 2 der Spule mit einem Film bedeckt, aus dem Kunstharzgemisch in die Zwischenräume zwischen den Metalldrähten, welche die Seile 4 bilden, eindringt. Überschüssiges Kunstharzgemisch 34 tropft in die Auffangwanne 19 ab und wird an die Eingangsseite der Pumpe 17 zwecks Wiederverwendung rückgeführt. Das Begießen der Luftdrossel mit dem Kunstharzgemisch erfolgt z.B. während 10 min, wonach sie noch während weiterer 10 min abtropfen gelassen wird. Insgesamt wird etwa das Zehnfache der Kunstharzmenge, die auf der Luftdrossel schließlich verbleibt, auf diese aufgegossen. Danach wird nach Stoppen des Drehantriebs und Entkoppeln von Antriebseinrichtung 21 und Drehkranz 10 die Behandlungseinheit 32 in die Aushärtestation 28 verbracht, wo die Luftdrossel 3 bei einer Temperatur von etwa 160 bis 180°C ausgehärtet wird. Die Verweilzeit der Luftdrossel in der Aushärtestation 28 beträgt dabei z.B. 240 min., so daß, um einen optimalen Behandlungsdurchsatz der Luftdrosseln 3 zu gewährleisten, im Vollbetrieb vorteilhaft zwei Luftdrosseln gleichzeitig ausgehärtet werden. Nach erfolgtem Aushärten werden die Behandlungseinheiten 32 über die Weiche 24 von Kettenförderer 11 auf den Kettenförderer 25 übertragen und von diesem in die Station 29 zur manuellen Behandlung gebracht, die mehrere Positionen hat und gleichzeitig als Pufferspeicher für die Behandlungseinheiten 32 dient. In dieser Station 29 können an den drehbar aufgehängten Luftdrosseln 3 verschiedene manuelle Arbeiten verrichtet werden, insbesondere das Abdecken bestimmter Bereiche der Luftdrossel 3 für den noch folgenden Lackiervorgang. Mittels des Kettenförderer 25 werden die Behandlungseinheiten 31 dann in die Lackierstation 30 transportiert und die Luftdrosseln 3 dort einer Lackierung unterworfen und anschließend wieder in die Station 29 verbracht, wo z.B. die Lackierabdeckungen wieder abgenommen werden und die Behandlungseinheiten 32 entladen werden, wonach man die Drehkränze 10 von den fertig behandelten Luftdrosseln 3 abnimmt.To carry out the method, the air throttles 3 to be treated are each connected to a treatment unit 32 with a rotating ring 10. Such a treatment unit 32 is now suspended in the loading station 26 in the eyelet of a suspension element 13 and brought by means of the chain conveyor 11 into the preheating station 27, in which the air throttle 3 is thoroughly dried at approximately 130-150 ° C. The treatment unit 32 is then transported to the impregnation station 2, the heart of the device. Here, the drive pinion 23 of the drive device 21 is first brought into engagement with the slewing ring 10 by pivoting the pivoting part 22. Then the drive device 21 is switched on and the turntable 10 together with the air throttle 3 is set in slow rotation. The peripheral speed of the air throttle 3 is less than 4 cm / s, but advantageously e.g. 2 cm / s. A curable liquid synthetic resin mixture, advantageously an epoxy resin-hardener mixture optionally containing an accelerator, is now supplied from the storage container 18 by means of the pump 17 to the spray lance 16. The synthetic resin mixture then emerges from the slot-shaped nozzle opening in the form of a flat jet 33 which tapers in width and then runs downward on the inside and outside of the coil of the rotating air throttle 1. The glass fiber tapes 6 are impregnated with the synthetic resin mixture and the surfaces of the electrically conductive ropes 2 of the coil are covered with a film from which the synthetic resin mixture penetrates into the spaces between the metal wires that form the ropes 4. Excess synthetic resin mixture 34 drips off into the collecting trough 19 and is returned to the inlet side of the pump 17 for reuse. The air throttle is poured with the synthetic resin mixture e.g. for 10 min, after which it is drained for a further 10 min. In total, about ten times the amount of synthetic resin that ultimately remains on the air throttle is poured onto it. Thereafter, after stopping the rotary drive and decoupling the drive device 21 and the turntable 10, the treatment unit 32 is brought into the curing station 28, where the air throttle 3 is cured at a temperature of about 160 to 180 ° C. The dwell time of the air throttle in the curing station 28 is e.g. 240 min., So that in order to ensure an optimal treatment throughput of the air throttles 3, two air throttles are advantageously cured simultaneously in full operation. After curing has taken place, the treatment units 32 are transferred from the chain conveyor 11 to the chain conveyor 25 via the switch 24 and from there to the station 29 for manual treatment, which has several positions and at the same time serves as a buffer store for the treatment units 32. In this station 29, various manual tasks can be performed on the rotatably suspended air throttles, in particular covering certain areas of the air throttle 3 for the subsequent painting process. The treatment units 31 are then transported to the painting station 30 by means of the chain conveyor 25 and the air throttles 3 are subjected to a painting there and then returned to the station 29, where e.g. the paint covers are removed again and the treatment units 32 are unloaded, after which the turntables 10 are removed from the finished air restrictors 3.

Gewerbliche VerwertbarkeitCommercial usability

Es wird ein verfahren zum Befestigen und Beschichten einer eisenlosen Luftdrossel durch Tränken mit möglichst geringem flüssigen, duroplastischen Kunstharzgemisch sowie eine Vorrichtung zur Durchführung des Verfahrens angegeben.A method for fastening and coating an ironless air throttle by impregnation with the lowest possible liquid, thermosetting synthetic resin mixture and a device for carrying out the method are specified.

Claims (8)

1. Process for consolidating and coating an air-core choke, the coil of which is composed of a single- or multi-layer winding of bare, electrically conductive cables which are twisted from metal wires and have a substantially rectangular cross section, wherein a liquid thermosetting synthetic resin mixture enters the interspaces between the metal wires within the cables in an impregnating operation and forms a film at the coil surface, after which the air-core choke is heat-treated and the synthetic resin mixture which it has taken up is thereby cured, characterised in that, in order to impregnate and coat the coil, the synthetic resin mixture is poured in a quantity which constitutes approximately ten times the film formed on the air-core choke onto the upper end of the coil of the air-core choke (3), which is rotating about its vertical axis, in one or more jet(s) (33) by means of a spray lance (16) which comprises at its underside a slot-shaped nozzle opening which is adjustable in length, and flows downwards along the inner and outer surfaces of the coil and, if required, between the layers of the coil winding, the synthetic resin mixture gradually entering the interspaces between the metal wires within the conductor cables (5) and forming a film at the coil surface, and the excess resin mixture being collected below the air-core choke (3) and returned for re-use.
2. Process according to claim 1, characterised in that the air-core choke (3) is dried at an elevated temperature before the impregnating operation.
3. Process according to claim 1 or 2, characterised in that the air-core choke (3) undergoes varnishing following curing.
4. Device for carrying out the process according to one of claims 1 to 3, consisting of support devices for supporting the air-core chokes (3) which are to be treated such that they can rotate about a vertical axis, a loading station (26), a preheating station (27), an impregnating station (2), a curing station (28), a station (29) for manual treatment, a varnishing station (30), if required, and an unloading station, as well as a transport device for moving the support devices loaded with the air-core chokes (3) between these stations, characterised in that the impregnating station (2) comprises a spray lance (16) which is disposed above the air-core choke (3) to be impregnated and has at its underside a slot-shaped nozzle opening which is adjustable in length, and that the device is also provided with a resin feed system with a reservoir (18) and a pump (17), as well as a collecting trough (19) with a facility for returning resin to the resin feed system.
5. Device according to claim 4, characterised in that the impregnating station (2) comprises a spray lance (16) which is disposed above the air-core choke (3) to be impregnated and has at its underside a slot-shaped nozzle opening which is adjustable in length, with a resin feed system with a reservoir (18) and a pump (17), as well as a collecting trough (19) with a facility for returning resin to the resin feed system.
6. Device according to claim 4 or 5, characterised in that the transport device consists of one or more chain conveyors (11, 25), and that the support devices each comprise a revolving ring (10), which can rotate with a vertical axis and from the underside of which the air-core choke (3) can be suspended.
7. Device according to claim 6, characterised in that the impregnating station (2) comprises a driving device (21) with a driving pinion (23), which can be brought into mesh with the revolving ring (10) of the support device brought into the impregnating station (2).
8. Device according to claim 7, characterised in that the driving device (21) comprises a swivelling part (22), the swivelling action of which enables the driving pinion (23) to be brought into mesh with the revolving ring (10).
EP93917433A 1992-08-20 1993-08-20 Process and device for consolidating and coating an air-core coil Expired - Lifetime EP0608402B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1680/92 1992-08-20
AT0168092A AT402243B (en) 1992-08-20 1992-08-20 METHOD FOR STRENGTHENING AND COATING AN AIR THROTTLE AND DEVICE FOR CARRYING OUT THIS METHOD
PCT/AT1993/000131 WO1994004281A1 (en) 1992-08-20 1993-08-20 Process and device for consolidating and coating an air-core coil

Publications (2)

Publication Number Publication Date
EP0608402A1 EP0608402A1 (en) 1994-08-03
EP0608402B1 true EP0608402B1 (en) 1997-01-22

Family

ID=3518670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93917433A Expired - Lifetime EP0608402B1 (en) 1992-08-20 1993-08-20 Process and device for consolidating and coating an air-core coil

Country Status (7)

Country Link
EP (1) EP0608402B1 (en)
AT (2) AT402243B (en)
CZ (1) CZ283727B6 (en)
DE (1) DE59305257D1 (en)
HU (1) HUT67909A (en)
SK (1) SK44994A3 (en)
WO (1) WO1994004281A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3998612B2 (en) * 2003-08-19 2007-10-31 ミネベア株式会社 Impregnation and curing winding, impregnation and curing method therefor, impregnation and curing system, impregnation and curing apparatus, varnish coating apparatus
CN113223854B (en) * 2021-05-25 2022-09-27 江西变电设备有限公司 Moisture-proof anaerobic adhesive filling device for winding joint of dry-type transformer
DE102022128506A1 (en) * 2022-10-27 2024-05-02 Audi Aktiengesellschaft Method for impregnating at least one wire winding of a component

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1157952A (en) * 1964-11-09 1969-07-09 Sperry Rand Ltd Trickle Impregnation Machine
DE1538918B2 (en) * 1966-10-27 1971-09-23 Licentia Patent Verwaltungs GmbH, 6000 Frankfurt PROCESS FOR IMPRAEGNATING WINDINGS
JPS56118318A (en) * 1980-02-22 1981-09-17 Toshiba Corp Manufacture of resin molded coil
DE8712149U1 (en) * 1986-09-19 1988-01-28 Bäuerle, Fritz, 7208 Spaichingen Impregnation machine for impregnating electrical machine parts

Also Published As

Publication number Publication date
DE59305257D1 (en) 1997-03-06
ATE148010T1 (en) 1997-02-15
HU9401057D0 (en) 1994-07-28
AT402243B (en) 1997-03-25
CZ76894A3 (en) 1994-07-13
SK44994A3 (en) 1994-08-10
ATA168092A (en) 1996-07-15
HUT67909A (en) 1995-05-29
CZ283727B6 (en) 1998-06-17
WO1994004281A1 (en) 1994-03-03
EP0608402A1 (en) 1994-08-03

Similar Documents

Publication Publication Date Title
DE4334959C2 (en) Method and device for coating an electromagnetic coil (e.g. stator winding)
EP1320418B1 (en) Device and Method for the Surface Treatment of Workpieces
EP3291966A1 (en) Device for producing three-dimensional objects by successively solidifying layers and an associated method
DE3815018A1 (en) CARRIER CLEANING AND DRYING DEVICE
EP0608402B1 (en) Process and device for consolidating and coating an air-core coil
DE1772746A1 (en) Method and device for applying a coating solution to a film web
DE3540543C2 (en)
DE2210865A1 (en) Method and device for the production of cylindrical, resilient hollow bodies
DE2041897C3 (en) Resin enamel insulated and lubricated electrical conductor
DE20022634U1 (en) Device for the surface treatment of workpieces
DE69605887T2 (en) METHOD AND DEVICE FOR IN-LINE IMPREGNATING FIBERS WITH A NON-AQUEOUS CHEMICAL TREATMENT
DE2027198A1 (en) Wet wound coils - whose winding wire is coated with uncured - resin and cured after winding
DE19625789B4 (en) Method for coating a body
DE840865C (en) Process for the production of enamelled wires
DE710115C (en) Method for insulating the iron frame of multiple T-anchors for small electrical machines
DE2636413C2 (en)
DE2513658C3 (en) Device for the production of spiral waveguides for the transmission of electromagnetic waves
DE102022115871A1 (en) Method for trickle impregnation of at least one non-rotationally symmetrical coil body intended for electrical machines and impregnation device
DE1163206B (en) Dip painting device
DE1546984A1 (en) Method and device for covering objects
DE1178945B (en) Process for the fully automatic attachment of the power supply lines to electrical components and device for carrying out the process
DE2524853A1 (en) PROCESS AND DEVICE FOR PRODUCING POLES, IN PARTICULAR LIGHTING POLES
DE9209682U1 (en) Device for dip coating of workpieces
DE2727095A1 (en) PROCEDURE FOR COVERING OBJECTS WITH POWDERY MATERIAL
EP1222965A2 (en) Method and apparatus for spraying a coating liquid

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

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19940426

17Q First examination report despatched

Effective date: 19951205

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970122

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19970122

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970122

Ref country code: DK

Effective date: 19970122

REF Corresponds to:

Ref document number: 148010

Country of ref document: AT

Date of ref document: 19970215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59305257

Country of ref document: DE

Date of ref document: 19970306

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970305

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

Ref country code: SE

Effective date: 19970422

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970716

Year of fee payment: 5

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

Ref country code: FR

Payment date: 19970717

Year of fee payment: 5

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

Ref country code: AT

Payment date: 19970721

Year of fee payment: 5

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

Ref country code: BE

Payment date: 19970723

Year of fee payment: 5

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

Ref country code: DE

Payment date: 19970804

Year of fee payment: 5

Ref country code: CH

Payment date: 19970804

Year of fee payment: 5

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

Ref country code: GB

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

Effective date: 19980820

Ref country code: AT

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

Effective date: 19980820

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

Ref country code: LI

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

Effective date: 19980831

Ref country code: CH

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

Effective date: 19980831

Ref country code: BE

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

Effective date: 19980831

BERE Be: lapsed

Owner name: ISOVOLTA OSTERREICHISCHE ISOLIERSTOFFWERKE A.G.

Effective date: 19980831

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980820

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: FR

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

Effective date: 19990430

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

Ref country code: DE

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

Effective date: 19990601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST