EP0045035A1 - Device for assembling transformer and choke cores - Google Patents

Device for assembling transformer and choke cores Download PDF

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Publication number
EP0045035A1
EP0045035A1 EP81105707A EP81105707A EP0045035A1 EP 0045035 A1 EP0045035 A1 EP 0045035A1 EP 81105707 A EP81105707 A EP 81105707A EP 81105707 A EP81105707 A EP 81105707A EP 0045035 A1 EP0045035 A1 EP 0045035A1
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EP
European Patent Office
Prior art keywords
stop rails
stop
bridge
rails
core
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Granted
Application number
EP81105707A
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German (de)
French (fr)
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EP0045035B1 (en
Inventor
Ernst Manzinger
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Transformatoren Union AG
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Transformatoren Union AG
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Priority to AT81105707T priority Critical patent/ATE8086T1/en
Publication of EP0045035A1 publication Critical patent/EP0045035A1/en
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Publication of EP0045035B1 publication Critical patent/EP0045035B1/en
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    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0233—Manufacturing of magnetic circuits made from sheets

Definitions

  • the invention relates to a device for layering cores for transformers and choke coils with a plurality of individual sheets per layer and with mutually overlapping and mutually overlapping cutting lines, the individual sheets being guided and held mechanically at least while being placed on the core.
  • Transformer cores made of the grain-oriented sheet metal that is generally used today should, if possible, be constructed in such a way that holes or other cross-sectional changes in the active iron are avoided.
  • These holes or cross-sectional changes cause, in addition to the known increase in no-load losses, increased risks with regard to iron firing and in the case of constructively related proximity of core bandages the holes abnormally high increase in open circuit losses when surge testing the transformer.
  • the reason for the last-mentioned effect lies in the formation of partial cross sections with relatively small resistances to the circumferential stress. The formation of these partial cross-sections is caused by high local package pressure at the holes and at the same time high circumferential pressure by core bandages.
  • cores are usually still designed with holes in the active iron even when using grain-oriented sheet metal. These holes are often used to receive core press bolts, but mostly and primarily to receive threading bolts during core layering.
  • the core layering by means of threading bolts has been shown to bring considerable advantages with regard to the production time compared to the core layering, for example with step stops in step woods such as they are used occasionally for cores made of non-perforated sheet metal.
  • each sheet of a core layer is provided with two holes, with the aid of which the sheet is pushed over corresponding threading bolts. After the target layer height of the core has been reached and the threading bolts have been removed, the holes in the core remain partly free or partly serve, for example in the yokes, for receiving press bolts.
  • the invention is therefore based on the object of building transformer cores from non-perforated metal sheets and at the same time achieving the same favorable production times when layering the cores as are achieved with core layers with threaded bolts.
  • this is made possible by a device into which individual sheets, free of special holes and recesses provided for mechanical guidance, can be inserted, on at least two of them preferably the corners, which enclose an acute angle, are guided in stop rails in vertically arranged prismatic grooves in cross section, the stop rails being vertically steplessly and horizontally, apart from a continuously fine adjustment, in steps corresponding to half the sheet width gradation and the respective position of the Stop rails is displayed.
  • stop rails in the horizontal direction can be moved transversely, parallel and at 45 ° to the axial direction of the core legs, that at the corners formed by the lower yoke and the outer core legs each have a common for the yoke and leg plates Stop rail is provided and that the horizontally displaceable shaft of a stop rail parts are supported by a spring-loaded lever.
  • the groove in each of the stop rails is formed by two mutually parallel surfaces lying opposite one another over an enlarged groove base (T-groove), and each of these two surfaces is externally closed by 45 ° and 135 ° the groove axis turned surface. Only for guiding the free tip of the middle leg is provided a stop rail with double groove that can be moved transversely and parallel to the axial direction thereof.
  • two stop rails assigned to the same core leg are each slidably fastened with their holder on a bridge which is also displaceable transversely to the axial direction of the core leg and all bridges are displaceable on a common base plate, the position of the individual bridges through windows in their supports of Scales on the base plate and the position of the stop rails on the bridge can be read from a scale on the bridge through windows in the holder of the stop rails.
  • the position of the bridge on the base plate shows the displacement of the associated stop rail transverse to the leg axes and the position of the brackets on the bridges shows the displacement of the associated stop rail parallel to the leg axes.
  • the device according to the invention is very advantageous because it enables a transformer core to be layered even from non-perforated metal sheets, under practically the same conditions that exist when layering transformer cores from metal sheets with so-called thread holes.
  • each with a single sheet 10 for a lower yoke 11, outer core legs 12 and 13 and a middle leg 14, six stop rails 1 are required in a device constructed according to the invention. These stop rails 1 are arranged such that each of the single sheets 10 has one end is supported on one of the stop rails 1. Until the stop rail 1 holding the free end of the middle leg 14 and having a double groove 16, all other stop rails are provided with a groove 15 into which the tips of the individual sheets 10 of the outer core legs 12 and 13 and of the middle leg 14 engage. This ensures that both the individual sheets of the yoke 11 and the individual sheets of the core legs 12, 13 and 14 are laterally displaced relative to one another in the individual sheet layers.
  • the arrangement according to FIG. 2 shows a three-leg core with longitudinally divided individual sheets 10, so that twice as many stop rails 1 are required for guiding and holding the individual sheets 10 compared to the embodiment with undivided sheets.
  • a stop rail 1 with a double groove 16 serves to receive the tips of the free end of the middle leg 14. All other stop rails 1 have the same shape as in the arrangement according to FIG. 1.
  • the groove 15 in the stop rails 1 is T-shaped in cross section, that is, it has an enlarged groove base.
  • the side walls flanking the groove 15 are parallel to one another. Based on these parallel side faces close to a respective against this by 45 ° and by 135 0 rotated about the groove axis surfaces on these.
  • the angles 45 0 and 135 ° are determined by the angle at which the obliquely cut end edges of the individual sheets of the core legs and the yokes meet. This oblique edge usually forms angles of 45 ° or 135 ° with the longitudinal edges of the individual sheets.
  • Fig. 3 shows the attachment of a stop rail 1 via a shaft 2 in a clamping piece 7, which in turn is carried by two guide columns 6.
  • the guide columns 6 are fixed in a base plate serving as a holder 9 anchored.
  • the shaft 2 is provided on its upper side with notches 3, into which wedges (not further specified) are pressed by a spring-loaded lever 4.
  • a clamping nut actuated via a lever 8 is also used.
  • the height of the clamping piece 7 on the guide columns 6 is infinitely variable.
  • the clamping piece 7 can either be clamped by actuating the lever 8 with the associated clamping nut or by actuating a further clamping nut.
  • Fig. 4 shows the summary of two stop rails 1 together with their brackets on a bridge 17 on which they can be moved together with their brackets 9.
  • the position of each of the two brackets can be read on a scale 22.
  • the bridge 17 in turn rests at each of its two ends with a plate-shaped support 19 on a base plate 18.
  • the connection between the base plate 18 and the supports 19 is made by bolts provided in the supports 19, which are in holes 20 of rows of holes in the base plate 18 intervention.
  • the exact position of the bridge 17 can be read on scales 23.
  • the device according to the invention for layering transformer cores is equipped with a variable number of bridges 17 depending on the type of core to be layered. 1, there are three bridges 17 and 15 for a normal three-legged core and six bridges 17 are provided for a three-legged core with longitudinally divided individual sheets. To bridge a five-legged core (not shown) with undivided sheets in the longitudinal direction, five bridges 17 each with two stop rails 1 would be required.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

1. Apparatus for covering cores for transformers and choke coils with a plurality of single metal sheets (10) one for each layer and with intersection lines which are mutually offset from layer to layer and overlap one another, the individual metal sheets (10) being mechanically guided and supported at least during the application of the core characterized in that - - at least two corners of their contour, which corners preferably enclose an acute angle, all the single metal sheets (10) are guided in verically arranged grooves (15) having a prismatic cross-section, in guide bars (1), all the single metal sheets (10) being free from special apertures and recesses provided for mechanical guidance ; - the guide bars (1) are continuously adjustable in the vertical direction ; - in the horizontal direction, the guide bars (1) can be adjusted in steps corresponding to half the width of the metal sheets, apart from a continuous fine adjustement (5) ; and - the setting of the guide bars (1) is indicated in each case.

Description

Die Erfindung betrifft eine Vorrichtung zum Schichten von Kernen für Transformatoren und Drosselspulen mit mehreren Einzelblechen je Lage und mit von Lage zu Lage gegeneinander versetzten und sich gegenseitig überlappenden Schnittlinien, wobei die Einzelbleche mindestens während des Auflegens auf den Kern mechanisch geführt und gehalten sind.The invention relates to a device for layering cores for transformers and choke coils with a plurality of individual sheets per layer and with mutually overlapping and mutually overlapping cutting lines, the individual sheets being guided and held mechanically at least while being placed on the core.

Transformatorkerne aus dem heute allgemein verwendeten kornorientierten Blech sollen nach Möglichkeit so gebaut sein, daß Löcher oder andere Querschnittsveränderungen im aktiven Eisen vermieden sind, Derartige Löcher oder Querschnittsveränderungen verursachen neben der bekannten Erhöhung der Leerlaufverluste erhöhte Risiken hinsichtlich Eisenbrand sowie im Falle konstruktiv bedingter Nachbarschaft von Kernbandagen zu den Löchern abnormal hohen Anstieg der Leerlaufverluste bei der Stoßspannungsprüfung des Transformators. Die Ursache für den zuletzt genannten Effekt liegt in der Bildung von Teilquerschnitten mit relativ kleinen Widerständen gegenüber der Umfangsspannung. Die Bildung dieser Teilquerschnitte wird dabei durch hohe örtliche Paketpressung an den Löchern und gleichzeitig hohe Umfangspressung durch Kernbandagen hervorgerufen.Transformer cores made of the grain-oriented sheet metal that is generally used today should, if possible, be constructed in such a way that holes or other cross-sectional changes in the active iron are avoided.These holes or cross-sectional changes cause, in addition to the known increase in no-load losses, increased risks with regard to iron firing and in the case of constructively related proximity of core bandages the holes abnormally high increase in open circuit losses when surge testing the transformer. The reason for the last-mentioned effect lies in the formation of partial cross sections with relatively small resistances to the circumferential stress. The formation of these partial cross-sections is caused by high local package pressure at the holes and at the same time high circumferential pressure by core bandages.

Trotz dieser Nachteile werden Kerne üblicherweise noch immer mit Löchern im aktiven Eisen auch bei Verwendung von kornorientiertem Blech ausgeführt. Diese Löcher dienen häufig zur Aufnahme von Kernpreßbolzen, meistens und in erster Linie jedoch zur Aufnahme von Fädelbolzen, während des Kernschichtens. Das Kernschichten mittels Fädelbolzen bringt erwiesenermaßen beachtliche Vorteile hinsichtlich der Fertigungszeit gegenüber dem Kernschichten mit beispielsweise Stufenanschlägen in Stufenhölzern, wie sie vereinzelt bei Kernen aus ungelochten Blechen verwendet werden.Despite these disadvantages, cores are usually still designed with holes in the active iron even when using grain-oriented sheet metal. These holes are often used to receive core press bolts, but mostly and primarily to receive threading bolts during core layering. The core layering by means of threading bolts has been shown to bring considerable advantages with regard to the production time compared to the core layering, for example with step stops in step woods such as they are used occasionally for cores made of non-perforated sheet metal.

Bei dem beispielsweise durch die DE-OS 26 13 150 bekannten Kernschichten mittels Fädelbolzen erhält jedes Blech einer Kernlage zwei Löcher mit deren Hilfe das Blech über entsprechende Fädelbolzen geschoben wird. Nach Erreichen der Sollschichthöhe des Kernes und Entfernen der Fädelbolzen bleiben die Löcher im Kern zum Teil frei oder dienen zum Teil,beispielsweise in den Jochen,zur Aufnahme von Preßbolzen.In the core layers known from DE-OS 26 13 150 by means of threading bolts, each sheet of a core layer is provided with two holes, with the aid of which the sheet is pushed over corresponding threading bolts. After the target layer height of the core has been reached and the threading bolts have been removed, the holes in the core remain partly free or partly serve, for example in the yokes, for receiving press bolts.

Durch die DE-OS 21 63 700 ist auch schon eine Vorrichtung zum Schichten von Kernen aus ungelochten Einzelblechen bekannt. In dieser bekannten Vorrichtung werden die Einzelbleche des unteren Joches maschinell an Anschläge bewegt, auf dem Kern lagerichtig abgelegt und dienen dann jeweils selbst als Anschläge für die Einzelbleche der Kernschenkel. Diese Vorrichtung ist jedoch infolge des erheblichen erforderlichen maschinellen Aufwandes nicht wirtschaftlich einsetzbar. Außerdem besteht beim Anschlagen der Einzelbleche an ihre Anschläge die Gefahr von mechanischen Verformungen, die selbst bei kleinsten absoluten Abmessungen durch Addition bei der Vielzahl der übereinanderzustapelnden Einzelbleche schnell zu unzulässig großen Maßabweichungen führen.From DE-OS 21 63 700 a device for layering cores from unperforated individual sheets is already known. In this known device, the individual sheets of the lower yoke are moved mechanically at stops, placed in the correct position on the core and then each serve as stops for the individual sheets of the core legs. However, this device cannot be used economically due to the considerable mechanical effort required. In addition, there is a risk of mechanical deformations when the individual sheets strike their stops, which, even with the smallest absolute dimensions, quickly lead to inadmissibly large dimensional deviations due to the addition of the large number of individual sheets to be stacked one on top of the other.

Der Erfindung liegt daher die Aufgabe zugrunde, Transformatorkerne aus ungelochten Blechen zu bauen und gleichzeitig beim Schichten der Kerne gleich günstige Fertigungszeiten zu erreichen, wie beim Kernschichten mit Fädelbolzen erzielt werden.The invention is therefore based on the object of building transformer cores from non-perforated metal sheets and at the same time achieving the same favorable production times when layering the cores as are achieved with core layers with threaded bolts.

Erfindungsgemäß wird dies durch eine Vorrichtung ermöglicht, in die frei von besonderen zur mechanischen Führung vorgesehenen Lochungen und Aussparungen ausgeführte Einzelbleche einlegbar sind, die an wenigstens zwei, vorzugsweise den einen spitzen Winkel einschließenden, Ekken ihrer Kontur in im Querschnitt prismatischen vertikal angeordneten Nuten in Anschlagschienen geführt sind, wobei die Anschlagschienen vertikal stufenlos und horizontal, abgesehen von einer stufenlosen Feineinstellung, in Stufen entsprechend der halben Blechbreitenstufung verstellbar sind und wobei die jeweilige Stellung der Anschlagschienen angezeigt ist.According to the invention, this is made possible by a device into which individual sheets, free of special holes and recesses provided for mechanical guidance, can be inserted, on at least two of them preferably the corners, which enclose an acute angle, are guided in stop rails in vertically arranged prismatic grooves in cross section, the stop rails being vertically steplessly and horizontally, apart from a continuously fine adjustment, in steps corresponding to half the sheet width gradation and the respective position of the Stop rails is displayed.

Nach vorteilhaften Ausgestaltungsmerkmalen der Erfindung ist vorgesehen, daß die Anschlagschienen in horizontaler Richtung quer, parallel und unter 45° zur Achsrichtung der Kernschenkel verschiebbar sind, daß an den von dem unteren Joch und den äußeren Kernschenkeln gebildeten Ecken für die Joch- und Schenkelbleche je eine gemeinsame Anschlagschiene vorgesehen ist und daß die den horizontal verschiebbaren Schaft einer Anschlagschiene arretierenden Teile von einem federbelasteten Hebel getragen sind.According to advantageous features of the invention it is provided that the stop rails in the horizontal direction can be moved transversely, parallel and at 45 ° to the axial direction of the core legs, that at the corners formed by the lower yoke and the outer core legs each have a common for the yoke and leg plates Stop rail is provided and that the horizontally displaceable shaft of a stop rail parts are supported by a spring-loaded lever.

Nach zweckmäßigen Weiterbildungen der Erfindung ist die Nut in jeder der Anschlagschienen von zwei sich gegenüberliegenden zueinander parallelen Flächen über einem erweiterten Nutgrund (T-Nut) gebildet und schließen sich nach außen an jede dieser beiden Flächen je eine hiergegen um 45° und um 135° um die Nutachse gedrehte Fläche an. Lediglich zur Führung der freien Spitze des Mittelschenkels ist eine quer und parallel zu deren Achsrichtung verschiebbare Anschlagschiene mit Doppelnut vorgesehen.According to expedient further developments of the invention, the groove in each of the stop rails is formed by two mutually parallel surfaces lying opposite one another over an enlarged groove base (T-groove), and each of these two surfaces is externally closed by 45 ° and 135 ° the groove axis turned surface. Only for guiding the free tip of the middle leg is provided a stop rail with double groove that can be moved transversely and parallel to the axial direction thereof.

Nach anderen Weiterbildungsmerkmalen der Erfindung sind je zwei demselben Kernschenkel zugeordnete Anschlagschienen mit ihrer Halterung verschiebbar auf einer quer zur Achsrichtung der Kernschenkel selbst ebenfalls verschiebbaren Brücke befestigt und sind alle Brücken auf einer gemeinsamen Grundplatte verschiebbar, wobei die Lage der einzelnen Brücken durch Fenster in ihren Auflagern von Skalen auf der Grundplatte und die Lage der Anschlagschienen auf der Brücke durch Fenster in der Halterung der Anschlagschienen von einer Skala auf der Brücke ablesbar ist. Dabei zeigt die Lage der Brücke auf der Grundplatte die Verschiebung der zugehörigen Anschlagschiene quer zu den Schenkelachsen und die Lage der Halterungen auf den Brücken die Verschiebung der zugehörigen Anschlagschiene parallel zu den Schenkelachsen an.According to other features of the invention, two stop rails assigned to the same core leg are each slidably fastened with their holder on a bridge which is also displaceable transversely to the axial direction of the core leg and all bridges are displaceable on a common base plate, the position of the individual bridges through windows in their supports of Scales on the base plate and the position of the stop rails on the bridge can be read from a scale on the bridge through windows in the holder of the stop rails. The position of the bridge on the base plate shows the displacement of the associated stop rail transverse to the leg axes and the position of the brackets on the bridges shows the displacement of the associated stop rail parallel to the leg axes.

Die erfindungsgemäße Vorrichtung ist sehr vorteilhaft, denn sie ermöglicht das Schichten eines Transformatorkerns auch aus ungelochten Blechen, unter praktisch den gleichen Bedingungen, die beim Schichten von Transformatorkernen aus Blechen mit sogenannten Fädellöchern vorliegen.The device according to the invention is very advantageous because it enables a transformer core to be layered even from non-perforated metal sheets, under practically the same conditions that exist when layering transformer cores from metal sheets with so-called thread holes.

Zwei Ausführungsbeispiele und Einzelheiten der erfindungsgemäßen Vorrichtung werden anhand einer Zeichnung näher erläutert.

  • Fig. 1 zeigt die Anordnung der Anschlagschienen einer erfindungsgemäßen Vorrichtung für einen üblichen Dreischenkelkern.
  • Fig. 2 zeigt die Anordnung der Anschlagschienen für einen Dreischenkelkern mit längsgeteilten Blechen.
  • Fig. 3 ist die perspektivische Darstellung einer Anschlagschiene mit ihrer Halterung.
  • Fig. 4 zeigt zwei mit ihren Halterungen von einer quer verschiebbaren Brücke getragene Anschlagschienen.
Two exemplary embodiments and details of the device according to the invention are explained in more detail with reference to a drawing.
  • Fig. 1 shows the arrangement of the stop rails of a device according to the invention for a conventional three-legged core.
  • Fig. 2 shows the arrangement of the stop rails for a three-legged core with longitudinally divided sheets.
  • Fig. 3 is a perspective view of a stop rail with its holder.
  • Fig. 4 shows two stop rails carried by their brackets from a transversely displaceable bridge.

Zum Schichten eines Transformatorkerns mit je einem Einzelblech 10 für ein unteres Joch 11, äußere Kernschenkel 12 und 13 sowie einen Mittelschenkel 14 erfordert in einer erfindungsgemäß aufgebauten Vorrichtung sechs Anschlagschienen 1. Diese Anschlagschienen 1 sind so angeordnet, daß jedes der Einzelbleche 10 mit je einem Ende an einer der Anschlagschienen 1 abgestützt ist. Bis auf die das freie Ende des Mittelschenkels 14 haltende Anschlagschiene 1, die eine Doppelnut 16 aufweist, sind alle anderen Anschlagschienen mit einer Nut 15 versehen, in die die Spitzen der Einzelbleche 10 der äußeren Kernschenkel 12 und 13, sowie des Mittelschenkels 14 eingreifen. Dabei ist gewährleistet, daß sowohl die Einzelbleche des Joches 11 als auch die Einzelbleche der Kernschenkel 12, 13 und 14 in den einzelnen Blechlagen seitlich gegeneinander verschoben sind.To layer a transformer core, each with a single sheet 10 for a lower yoke 11, outer core legs 12 and 13 and a middle leg 14, six stop rails 1 are required in a device constructed according to the invention. These stop rails 1 are arranged such that each of the single sheets 10 has one end is supported on one of the stop rails 1. Until the stop rail 1 holding the free end of the middle leg 14 and having a double groove 16, all other stop rails are provided with a groove 15 into which the tips of the individual sheets 10 of the outer core legs 12 and 13 and of the middle leg 14 engage. This ensures that both the individual sheets of the yoke 11 and the individual sheets of the core legs 12, 13 and 14 are laterally displaced relative to one another in the individual sheet layers.

Die Anordnung gemäß Fig. 2 zeigt einen Dreischenkelkern mit längsgeteilten Einzelblechen 10, so daß gegenüber der Ausführung mit ungeteilten Blechen doppelt so viele Anschlagschienen 1 zur Führung und Halterung der Einzelbleche 10 erforderlich sind.The arrangement according to FIG. 2 shows a three-leg core with longitudinally divided individual sheets 10, so that twice as many stop rails 1 are required for guiding and holding the individual sheets 10 compared to the embodiment with undivided sheets.

Auch bei dieser Anordnung dient zur Aufnahme der Spitzen des freien Endes des Mittelschenkels 14 eine Anschlagschiene 1 mit Doppelnut 16. Alle übrigen Anschlagschienen 1 haben die gleiche Form wie in der Anordnung gemäß Fig.1.In this arrangement, too, a stop rail 1 with a double groove 16 serves to receive the tips of the free end of the middle leg 14. All other stop rails 1 have the same shape as in the arrangement according to FIG. 1.

Die Nut 15 in den Anschlagschienen 1 ist im Querschnitt T-förmig gestaltet, das heißt, sie hat einen erweiterten Nutgrund. Dabei sind die die Nut 15 flankierenden Seitenwände parallel zueinander. Ausgehend von diesen parallelen Seitenflächen schließen sich an diese je eine hiergegen um 45° und um 1350 um die Nutachse gedrehte Flächen an. Die Winkel 450 und 135° sind durch den Winkel bestimmt unter dem die schrägabgeschnittenen Endkanten der Einzelbleche der Kernschenkel und der Joche aneinanderstoßen. Diese schräge Kante bildet mit den Längskanten der Einzelbleche üblicherweise Winkel von 45° bzw. 135°.The groove 15 in the stop rails 1 is T-shaped in cross section, that is, it has an enlarged groove base. The side walls flanking the groove 15 are parallel to one another. Based on these parallel side faces close to a respective against this by 45 ° and by 135 0 rotated about the groove axis surfaces on these. The angles 45 0 and 135 ° are determined by the angle at which the obliquely cut end edges of the individual sheets of the core legs and the yokes meet. This oblique edge usually forms angles of 45 ° or 135 ° with the longitudinal edges of the individual sheets.

Fig. 3 zeigt die Befestigung einer Anschlagschiene 1 über einen Schaft 2 in einem Klemmstück 7, das seinerseits von zwei Führungssäulen 6 getragen ist. Die Führungssäulen 6 sind in einer als Halterung 9 dienenden Fußplatte fest verankert.Fig. 3 shows the attachment of a stop rail 1 via a shaft 2 in a clamping piece 7, which in turn is carried by two guide columns 6. The guide columns 6 are fixed in a base plate serving as a holder 9 anchored.

Der Schaft 2 ist an seiner Oberseite mit Kerben 3 versehen, in die nicht näher bezeichnete Keile von einem federbelasteten Hebel 4 hineingedrückt werden. Zur Arretierung des Schaftes 2 in dem Klemmstück 7 dient darüberhinaus eine über einen Hebel 8 betätigte Klemmutter. Zum Ausgleich kleinerer Maßabweichungen an den Einzelblechen 10 besteht die Möglichkeit, die die Nut 15 aufweisenden Anschlagschienen 1 mittels einer Feineinstellung 5 in Achsrichtung gegenüber dem Schaft 2 zu verstellen.The shaft 2 is provided on its upper side with notches 3, into which wedges (not further specified) are pressed by a spring-loaded lever 4. To lock the shaft 2 in the clamping piece 7, a clamping nut actuated via a lever 8 is also used. To compensate for smaller dimensional deviations on the individual sheets 10, it is possible to adjust the stop rails 1 having the groove 15 by means of a fine adjustment 5 in the axial direction relative to the shaft 2.

Die Höhenlage des Klemmstückes 7 auf den Führungssäulen 6 ist stufenlos veränderbar. In der jeweils einzustellenden Höhenlage ist das Klemmstück 7 entweder ebenfalls durch Betätigung des Hebels 8 mit der zugehörigen Klemmmutter oder durch Betätigung einer weiteren Klemmutter festklemmbar.The height of the clamping piece 7 on the guide columns 6 is infinitely variable. In the height position to be set in each case, the clamping piece 7 can either be clamped by actuating the lever 8 with the associated clamping nut or by actuating a further clamping nut.

Fig. 4 zeigt die Zusammenfassung von zwei Anschlagschienen 1 zusammen mit ihren Halterungen auf einer Brücke 17, auf der sie zusammen mit ihren Halterungen 9 verschiebbar sind. Dabei ist die Stellung jeder der beiden Halterungen jeweils auf einer Skala 22 ablesbar. Die Brücke 17 ihrerseits ruht an jedem ihrer-beiden Enden mit einem plattenförmigen Auflager 19 auf einer Grundplatte 18. Die Verbindung zwischen der Grundplatte 18 und den Auflagern 19 erfolgt durch in den Auflagern 19 vorgesehenen Bolzen, die in Löcher 20 von Lochreihen in der Grundplatte 18 eingreifen. Die genaue Lage der Brücke 17 ist dabei auf Skalen 23 ablesbar.Fig. 4 shows the summary of two stop rails 1 together with their brackets on a bridge 17 on which they can be moved together with their brackets 9. The position of each of the two brackets can be read on a scale 22. The bridge 17 in turn rests at each of its two ends with a plate-shaped support 19 on a base plate 18. The connection between the base plate 18 and the supports 19 is made by bolts provided in the supports 19, which are in holes 20 of rows of holes in the base plate 18 intervention. The exact position of the bridge 17 can be read on scales 23.

Die erfindungsgemäß eingerichtete Vorrichtung zum Schichten von Transformatorkernen ist mit einer von der Art des zu schichtenden Kernes abhängigen variablen Zahl von Brükken 17 bestückt. Dabei sind, wie zum Beispiel Fig. 1 zeigt, bei einem normalen Dreischenkelkern drei Brücken 17 und und bei einem Dreischenkelkern mit längsgeteilten Einzelblechen sechs Brücken 17 vorgesehen. Zum Schichten eines nicht dargestellten Fünfschenkelkern mit in Längsrichtung ungeteilten Blechen wären demzufolge fünf Brücken 17 mit je zwei Anschlagschienen 1 erforderlich.The device according to the invention for layering transformer cores is equipped with a variable number of bridges 17 depending on the type of core to be layered. 1, there are three bridges 17 and 15 for a normal three-legged core and six bridges 17 are provided for a three-legged core with longitudinally divided individual sheets. To bridge a five-legged core (not shown) with undivided sheets in the longitudinal direction, five bridges 17 each with two stop rails 1 would be required.

Claims (9)

1. Vorrichtung zum Schichten von Kernen für Transformatoren und Drosselspulen mit mehreren Einzelblechen je Lage und mit von Lage zu Lage gegeneinander versetzten und sich gegenseitig überlappenden Schnittlinien, wobei die Einzelbleche mindestens während des Auflegens des Kernes mechanisch geführt und gehalten sind, dadurch gekennzeichnet, - daß alle Einzelbleche (10) an wenigstens zwei, vorzugsweise den einen spitzen Winkel einschließenden, Ecken ihrer Kontur in im Querschnitt prismatischen, vertikal angeordneten Nuten (15) in Anschlagschienen (1) geführt sind, wobei alle Einzelbleche (10) frei von besonderen zur mechanischen Führung vorgesehenen Lochungen und Aussparungen sind, - daß die Anschlagschienen (1) vertikal stufenlos verstellbar sind, - daß die Anschlagschienen (1) horizontal, abgesehen von einer stufenlosen Feineinstellung (5), in Stufen entsprechend der halben Blechbreitenstufung verstellbar sind und - daß die jeweilige Stellung der Anschlagschienen (1) angezeigt ist. 1.Device for layering cores for transformers and choke coils with several individual sheets per layer and with mutually overlapping and mutually overlapping cutting lines, the individual sheets being guided and held mechanically at least during the laying of the core, characterized in that - That all individual sheets (10) are guided at least two, preferably enclosing an acute angle, corners of their contour in cross-sectionally prismatic, vertically arranged grooves (15) in stop rails (1), all individual sheets (10) being free from special ones holes and recesses provided for mechanical guidance, - That the stop rails (1) are vertically continuously adjustable, - That the stop rails (1) horizontally, apart from a continuously fine adjustment (5), are adjustable in steps corresponding to half the sheet width gradation and - That the respective position of the stop rails (1) is displayed. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet , daß die Anschlagschienen (1) in horizontaler Richtung quer, parallel und unter 45° zur Achsrichtung der Kernschenkel (12, 13, 14) verschiebbar sind.2. Device according to claim 1, characterized in that the stop rails (1) in the horizontal direction transversely, parallel and at 45 ° to the axial direction of the core legs (12, 13, 14) are displaceable. 3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß an den von dem unteren Joch (11) und den äußeren Kernschenkeln (12, 13) gebildeten Ecken für die Joch- und Schenkelbleche je eine gemeinsame Anschlagschiene (1) vorgesehen ist.3. Apparatus according to claim 1 and 2, characterized in that a common stop rail (1) is provided at the corners formed by the lower yoke (11) and the outer core legs (12, 13) for the yoke and leg plates. 4. Vorrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet , daß einen horizontal verschiebbaren Schaft (2) einer Anschlagschiene (1) arretierende Teile von einem federbelasteten Hebel (4) getragen sind.4. Apparatus according to claim 1 to 3, characterized characterized in that a horizontally displaceable shaft (2) of a stop rail (1) locking parts are carried by a spring-loaded lever (4). 5. Vorrichtung nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Nut (15) in jeder der Anschlagschienen (1) von zwei sich gegenüberliegenden zueinander parallelen Flächen über einem erweiterten Nutgrund (T-Nut) gebildet ist und daß sich an jede dieser beiden Flächen nach außen je eine hiergegen um 45° und um 135° um die Nutachse gedrehte Fläche anschließen.5. Apparatus according to claim 1 to 4, characterized in that the groove (15) in each of the stop rails (1) of two opposite mutually parallel surfaces over an enlarged groove base (T-groove) is formed and that each of these two Connect surfaces to the outside each one surface rotated by 45 ° and 135 ° around the groove axis. 6. Vorrichtung nach Anspruch 1 bis 5, dadurch gekennzeichnet , daß zur Führung der freien Spitzen der Einzelbleche (10) des Mittelschenkels (14) lediglich quer und parallel zu deren Achsrichtung verschiebbare Anschlagschienen (1) mit Doppelnut (16) vorgesehen ist.6. The device according to claim 1 to 5, characterized in that for guiding the free tips of the individual sheets (10) of the middle leg (14) only transversely and parallel to the axial direction movable stop rails (1) is provided with a double groove (16). 7. Vorrichtung nach Anspruch 1 bis 6, d a d ur c h gekennzeichnet, daß je zwei demselben Kernschenkel (12, 13, 14) zugeordnete Anschlagschienen (1) mit ihrer Halterung (9) verschiebbar auf einer quer zur Achsrichtung der Kernschenkel selbst ebenfalls verschiebbaren Brücke (17) befestigt sind.7. The device according to claim 1 to 6, dad ur ch characterized in that two same core legs (12, 13, 14) associated stop rails (1) with their bracket (9) slidably on a transverse to the axial direction of the core leg itself also movable bridge ( 17) are attached. 8. Vorrichtung nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß alle Brücken (17) auf einer gemeinsamen Grundplatte (18) verschiebbar sind und daß die Lage der einzelnen Brücke (17) durch Fenster in ihren Auflagern (19) von Skalen auf der Grundplatte (18) und daß die Lage der Anschlagschienen (1) auf der Brücke (17) durch Fenster in der Halterung (9) der Anschlagschienen (1) von einer Skala auf der Brücke (17) ablesbar ist, wobei die Lage der Brücke (17) auf der Grundplatte (18) die Verschiebung der zugehörigen Anschlagschienen (1) quer zu den Schenkelachsen (12, 13, 14) und die Lage der Halterung (9) auf der Brücke (17) die Verschiebung der zugehörigen Anschlagschiene (1) parallel zu den Schenkelachsen (12, 13,14) anzeigt.8. The device according to claim 1 to 7, characterized in that all bridges (17) on a common base plate (18) are displaceable and that the position of the individual bridge (17) through windows in their supports (19) of scales on the base plate (18) and that the position of the stop rails (1) on the bridge (17) through windows in the holder (9) of the stop rails (1) can be read from a scale on the bridge (17), the position of the bridge (17 ) on the base plate (18) the displacement of the associated stop rails (1) transverse to the leg axes (12, 13, 14) and the position of the holder (9) on the bridge (17) indicates the displacement of the associated stop rail (1) parallel to the leg axes (12, 13, 14). 9, Vorrichtung nach Anspruch 1 bis 8, dadurch gekennzeichnet, daß zur stufenweisen Verstellung der Brücken (17) Bolzen (21) in Löcher (20) von Lochreihen in der Grundplatte (18) und zur stufenweisen Verstellung der Anschlagschienen (1) gegenüber ihren Halterungen (9) die Keile in Kerben (3) des Schaftes (2) der Anschlagschienen (1) eingreifen.9, Device according to claim 1 to 8, characterized in that for the gradual adjustment of the bridges (17) bolts (21) in holes (20) of rows of holes in the base plate (18) and for the gradual adjustment of the stop rails (1) relative to their holders (9) engage the wedges in the notches (3) of the shaft (2) of the stop rails (1).
EP81105707A 1980-07-28 1981-07-20 Device for assembling transformer and choke cores Expired EP0045035B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81105707T ATE8086T1 (en) 1980-07-28 1981-07-20 DEVICE FOR LAYERING CORES FOR TRANSFORMERS AND CHOKE COILS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3028605 1980-07-28
DE3028605A DE3028605C2 (en) 1980-07-28 1980-07-28 Device for layering cores for transformers and reactors

Publications (2)

Publication Number Publication Date
EP0045035A1 true EP0045035A1 (en) 1982-02-03
EP0045035B1 EP0045035B1 (en) 1984-06-20

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EP81105707A Expired EP0045035B1 (en) 1980-07-28 1981-07-20 Device for assembling transformer and choke cores

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EP (1) EP0045035B1 (en)
JP (1) JPS5753920A (en)
AT (1) ATE8086T1 (en)
DE (1) DE3028605C2 (en)

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DE3735661A1 (en) * 1987-10-21 1989-05-03 Siemens Ag Device for stacking laminated iron cores for transformers and inductor coils
US7752735B2 (en) * 2007-08-09 2010-07-13 Abb Technology Ag Coil bus transformer and a method of manufacturing the same
CN106829512A (en) * 2017-02-10 2017-06-13 济南奥图自动化股份有限公司 A kind of servo closed assembly opposite joint mechanism
CN108152616A (en) * 2017-12-14 2018-06-12 马鞍山豪远电子有限公司 A kind of device for detecting performance of transformer core, transformer manufacturing system and method

Families Citing this family (2)

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DE3623271A1 (en) * 1986-07-10 1988-01-21 Volta Werke Electricitaet Laminated iron core for transformers and inductors having two or three wound core limbs
DE102010061022B3 (en) 2010-12-03 2012-03-01 Wilhelm Hedrich Vakuumanlagen Gmbh & Co. Kg Method and device for producing a stack of sheets

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US2332922A (en) * 1940-06-26 1943-10-26 Kuperus Jan Magnetic circuit comprising a laminated coiled core
GB799505A (en) * 1955-03-25 1958-08-13 Mullard Radio Valve Co Ltd An improved transformer core clamping device
FR1519526A (en) * 1966-02-15 1968-04-05 Laminated Magnetic Core Improvements
NL7013117A (en) * 1970-09-04 1972-03-07
FR2173171A1 (en) * 1972-02-25 1973-10-05 Acec SMOOTHING SELF.
US3927454A (en) * 1973-04-13 1975-12-23 Hitachi Ltd Apparatus for producing laminated magnetic cores for inductive electric apparatus
US3792397A (en) * 1973-07-02 1974-02-12 Allis Chalmers Stationary induction apparatus having sound attenuating core clamping means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735661A1 (en) * 1987-10-21 1989-05-03 Siemens Ag Device for stacking laminated iron cores for transformers and inductor coils
US7752735B2 (en) * 2007-08-09 2010-07-13 Abb Technology Ag Coil bus transformer and a method of manufacturing the same
CN106829512A (en) * 2017-02-10 2017-06-13 济南奥图自动化股份有限公司 A kind of servo closed assembly opposite joint mechanism
CN108152616A (en) * 2017-12-14 2018-06-12 马鞍山豪远电子有限公司 A kind of device for detecting performance of transformer core, transformer manufacturing system and method

Also Published As

Publication number Publication date
DE3028605C2 (en) 1983-10-27
JPS5753920A (en) 1982-03-31
EP0045035B1 (en) 1984-06-20
DE3028605A1 (en) 1982-02-25
ATE8086T1 (en) 1984-07-15

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