EP1925005B1 - Apparatus and method for winding electrical coils - Google Patents

Apparatus and method for winding electrical coils Download PDF

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Publication number
EP1925005B1
EP1925005B1 EP05777384A EP05777384A EP1925005B1 EP 1925005 B1 EP1925005 B1 EP 1925005B1 EP 05777384 A EP05777384 A EP 05777384A EP 05777384 A EP05777384 A EP 05777384A EP 1925005 B1 EP1925005 B1 EP 1925005B1
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EP
European Patent Office
Prior art keywords
predetermined breaking
breaking point
coil
wound
order
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
EP05777384A
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German (de)
French (fr)
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EP1925005A1 (en
Inventor
Reinhold Bauer
Roland Fischer
Daniel Künzli
Christoph Müller
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.)
Tuboly-Astronic AG
Tuboly Astronic AG
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Tuboly-Astronic AG
Tuboly Astronic AG
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Publication of EP1925005A1 publication Critical patent/EP1925005A1/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
    • H01F41/04—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
    • H01F41/06—Coil winding
    • H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/066—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation
    • H01F41/068—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation in the form of strip material

Definitions

  • the embodiments of the invention described herein generally relate to an apparatus and method for winding electrical coils.
  • a carrier is driven to wind a coil wire on the carrier.
  • the coil wire is surrounded by an electrically insulating material (eg paint).
  • the machine winds the coil wire layer by layer on the carrier.
  • an insulating material is introduced to separate and electrically insulate this layer from the next layer in addition to the paint insulation. This insulation material represents a layer isolation.
  • the layer insulation should be wound as tight as possible.
  • the thickness of the layer insulation must be optimized to the voltage conditions in the coil, for example, to avoid voltage breakdowns.
  • the layer insulation is cut off at the end of a layer during the winding process and glued back with a tape when the layer is changed. This is done in the known winding machine by hand and requires, per wire layer, typically two stops of the winding machine.
  • a machine for winding electric coils comprising a support for an electric coil to be wound in wire layers and means for supplying insulator inserts between the wire layers.
  • an insulating strip measuring device, a metered strip severing device, and a dispenser wherein the dispenser feeds the cut strips from the severing device to the coil at certain time intervals.
  • An object of the embodiments of the invention described herein, therefore, is to further automate the winding of coils to thereby improve the efficiency of winding.
  • One aspect of the invention relates to a device for winding electric coils with a support for an electric coil to be wound in layers and with a device which supplies a material to the coil to be wound in order to separate adjacent layers of the coil from each other.
  • the device has a device arranged away from the carrier for generating a predetermined breaking point in the material, and a measuring unit arranged between the carrier and the device for generating a predetermined breaking point. The measuring unit determines when the means for generating a predetermined breaking point is to be activated in order to generate a predetermined breaking point in the material.
  • the device also has a guide device which fixes the material near the predetermined breaking point at a predetermined time on the coil to be wound in order to separate the material at the predetermined breaking point.
  • Another aspect of the invention relates to a method for winding electrical coils in which superimposed layers of an electrical conductor are separated by a material from each other.
  • a first end of the material is secured to a predetermined location of a ply of a spool to be wound to wind the material at a nominal speed on the ply.
  • a predetermined breaking point in the material is generated as a function of a current circumference of the coil to be wound and a speed of movement of the material.
  • the material is secured in an area of the predetermined breaking point on the coil to be wound and a tensile force is exerted on the material in order to separate the material at the predetermined breaking point.
  • An advantage of such a device and method is that the winding process is continuous and not interrupted by stops. This is made possible by the fact that it is determined in advance when a position change is required and then away from the coil a predetermined breaking point is generated in the material. The predetermined breaking point is pulled through to the coil, which allows a controlled and secure guidance of the material. Only after the material is mounted on the spool, the material is torn off at the predetermined breaking point. After tearing, the material is again held securely to be ready for the beginning of a new layer of material.
  • the detailed description of some embodiments will be made with reference to a device for winding electrical coils of various types and sizes.
  • the device is suitable, for example, for winding high-voltage coils, in which after Each layer of electrical wire incorporates insulation material. Such coils are used for example in transformers and electric motors.
  • the device is referred to below as a winding machine 1.
  • FIG. 1 shows a schematic side view of an embodiment of a winding machine 1.
  • the winding machine 1 shown has a control device 6, via which an operator can operate the winding machine 1.
  • the control device 6 includes in one embodiment a control and monitoring device with application-specific control programs, an input unit (eg a keyboard) for input of operating and coil parameters, and an output unit (eg an LCD screen) for displaying operating and coil parameters and fault messages.
  • the controller 6 may, in one embodiment, be a computer equipped with appropriate programs.
  • a Drahtabroll worn 8 In a frame of the winding machine 1, a Drahtabroll worn 8, a unwinding device 2 and a rewinder 4 are housed.
  • the wire brake 8 is in one embodiment, a device which surrounds an electrical insulation material surrounded by an electrical conductor, for. B. rolls a wire from a supply roll and the rewinder 4 feeds.
  • a wire reeling device 8 is referred to as a wire brake 8.
  • the wire is an example of an electrical conductor and may have different diameters, e.g. B., between about 0.4 mm and about 4 mm. But it can also be used a rectangular wire.
  • the winder 4 has a carrier, which rotates an electric drive about a longitudinal axis.
  • the carrier may be a wood, plastic or metal cylinder or rope realized by a low voltage coil.
  • the carrier is arranged horizontally and transversely from the operator's point of view.
  • a screw or clamping device secures a wire end on the carrier at the beginning and during the winding process. If the wire or other electrical conductor is mounted on this carrier, the rewinder 4, for example, pulls the wire and winds it onto the carrier.
  • the carrier moves along its longitudinal axis in a first direction to wind a coil layer.
  • the wire brake 8 may be configured to reciprocate the wire in a horizontal direction.
  • a layer is a layer of electrical conductor (e.g., wire) that arises when the electrical conductor, e.g. B. is wound on a cylinder and the individual turns of the electrical conductor come to rest next to each other. The individual turns can touch or be separated by a distance.
  • the term "layer” also means a layer of an electrical conductor in which individual windings can overlap.
  • the winding machine 1 is designed so that the unwinding device 2 introduces a material between the individual coil layers, which separates the individual layers from each other.
  • the unwinding device 2 is in FIG. 2 shown schematically and closer in the following described.
  • the material increases the distance from adjacent layers and therefore reduces the risk of stress from one layer to another adjacent layer.
  • the material may be paper, plastic or any other non-conductive material that separates the layers and can be brought into a desired permanent shape (eg, in the form of a tape).
  • the material is a paper strip or ribbon about 1-5 cm wide and about 0.012-0.15 mm thick. It should be understood that the material and its width and thickness are selected for the particular application (eg, voltage, temperature, and humidity).
  • FIG. 2 shows a schematic side view of an embodiment of the unwinding device 2.
  • the unwinding device 2 has a carrier 12, on which a paper tape 14 is wound as insulation material.
  • the unwinding device 2 is referred to as insulation dispenser 2.
  • the carrier 12 is a roller that rotates counterclockwise.
  • a plurality of deflection rollers 28, 30, 32, a device 18 for generating a local weakening of the material, ie a predetermined breaking point, a measuring unit 20 and a guide device 26 guide the paper tape 14 to the winder 4.
  • the guide device 26 is height adjustable (indicated by a double arrow 34) and vertically pivotable about an axis 41 (indicated by a double arrow 36) to conform to an increasing coil diameter during winding.
  • the bobbin diameter may change from about 150 mm to about 400 mm.
  • the paper tape 14 is unrolled from the carrier 12, which is braked by a motor. In order to ensure a uniform paper tension, the train is controlled by means of a dancer unit 16, which acts on the carrier 12. The paper tape 14 is over the Deflection rollers 28, 30, 32 led to the device 18. With the measuring unit 20 of the current coil circumference and the speed of the paper tape 14 are determined. In addition, the distance between the coil and the device 18 is known. From this it can be calculated when the device 18 is to be activated in order to generate the predetermined breaking point. For example, the known distance between the device 18 and the bobbin is divided by the determined coil circumference. This division gives the number of revolutions made by the rewinder 4 until the predetermined breaking point reaches the reel.
  • the device 18 weakens the paper web 14 in synchronism with the belt speed.
  • the device 18 weakens the paper web 14 through a perforation at the desired location.
  • the perforation thus serves as a predetermined breaking point.
  • the apparatus 18 presses the paper web 14 in one embodiment with a serrated blade 19 against a counterpart 21.
  • the blade 19 is arranged to be substantially transversely (eg, approximately at 90 °) to the length of the paper Paper tape 14 extends.
  • the blade 19 and the counterpart 21 rotate synchronously to the belt speed.
  • the counterpart 21 may have a notch or elastic surface (e.g., rubberized) into which the prongs may enter.
  • the serrations pierce the paper web 14 but without severing the paper tape 14. Nevertheless, the prongs cause a local weakening of the paper, for example, transverse to the direction of pull.
  • a serrated blade perforation can also be done with a toothed wheel.
  • the desired local weakening of the paper ie the creation of a predetermined breaking point
  • a predetermined breaking point generated thereby can extend substantially transversely to the length of the paper tape (14).
  • the guide means 26 guides the paper tape 14 to the rewinder 4 and the coil to be wound controlled.
  • the height-adjustable and rotatable guide means 26 pulleys 38, 40 and a vacuum plate 24.
  • the vacuum plate 24 is connected to a suction pump which generates a negative pressure sufficient to hold the paper tape 14, or one end of the paper tape 14 safely.
  • a device 22 for applying an adhesive is attached to the coil in the illustrated embodiment.
  • the device 22 can be moved towards and away from the rewinder 4 (indicated by a double arrow 42).
  • the adhesive is hot glue, which is heated in the device 22 and applied through a nozzle 44.
  • the adhesive may be a seconds size, a cold glue or an adhesive tape.
  • the device 22 To apply the hot glue, the device 22, while the carrier and the coil to be wound to rotate in the counterclockwise direction, for example, extended to about 10-40 mm distance from the carrier or to be wound coil.
  • the hot glue is sprayed by means of the nozzle 44 onto the coil to be wound, in order to create a splice 46.
  • the splice 46 is applied about a quarter turn in front of a Auf Vietnamese 48.
  • the application of the hot glue is also carried out without stopping the spool or the paper tape 14.
  • the paper tape 14 is to press in the vicinity but outside the predetermined breaking point on the splice 46, in such a way that the predetermined breaking point is in the direction of the paper tape 14 in front of the splice 46.
  • the paper tape 14 we pressed with the vacuum plate 24 on the splice 46.
  • the guide means 26 holds the paper web 14 so that it can tear off at the perforated location.
  • One end of the now separate paper tape 14 remains on the splice 46, while the vacuum plate 24 holds the loose end of the paper tape 14 until it is glued back to the coil to be wound at the end of a layer to wrap the next layer of insulation material.
  • control means 6 controls the process of adhering a loose end of the paper web 14.
  • a loose end exists before winding the first layer of insulating material, and after tearing off the paper web 14 for a wound insulation layer. This loose end is to be mounted on the coil to be wound in order to allow a reliable winding of an insulating layer.
  • Prerequisite for the process of sticking is that the paper tape 14 is in position and the vacuum plate 24 holds the loose end.
  • the control device 6 reduces the speed of the rewinder 4, e.g. from about 400 rpm to about 20 rpm. Controlled by the control device 6, the adhesive device 22 moves into position (approximately 10 mm away from the coil) and applies the adhesive.
  • the insulation dispenser 2 reduces the tension on the paper tape 14 to a minimum tension calculated from the insulation cross section (for example, approximately 16 N).
  • the guide means 26 is lowered to press with the vacuum plate 24, the loose end of the paper tape 14 at the Aufddling 48 on the adhesive 46. After two turns of the coil, an insulation and wire layer change takes place, and the speed is increased to nominal speed.
  • the control device 6 also controls the process of separating the paper tape 14.
  • the prerequisite for the process of separating is that one layer Insulation material including a border strip is finished wound.
  • the paper tape 14 therefore extends from the insulating layer approximately to the deflection roller 40 of the guide device 26.
  • the control device 6 reduces the speed of the winder 4, for example from about 400 U / min to about 60 U / min, and the Isolationsabroller 2 reduces the train on the paper tape 14.
  • the measuring unit 20 determines when to activate the device 18 to perforate the paper web 14. Once this is determined, the paper tape 14 is perforated synchronously to the belt speed and pulled further in the direction of rewinder 4.
  • the adhesive device 22 moves into position (eg at a distance of about 10 mm from the coil), applies the adhesive to the splice 46 and moves the adhesive device 22 back into its starting position.
  • the rewinder 4 rotates the splice 46 in the direction of the Auf matterss 48.
  • the guide means 26 is lowered to press with the vacuum plate 24, the paper tape 14 in the vicinity of the perforation at the Auftician 48 on the splice 46.
  • a clamping device 39 connected to the guide device 26 is activated, so that the paper tape 14 is tensioned and tears off at the perforation point.
  • the clamping device has a pneumatic cylinder with an attached rubber coating, which is pressed onto the insulating material. This is done immediately after the vacuum plate 24 has pressed the paper tape 14 to the glue point.
  • the controller 6 turns on the vacuum to hold the loose end of the paper web 14. The vacuum plate 24 is lifted off the spool and the speed is increased to nominal speed.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Coil Winding Methods And Apparatuses (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

A winding machine for electrical coils to be wound into layers has a device which supplies a material to the coil to be wound in order to separate adjacent layers of the coil from one another. The device has a device for producing a predetermined breaking point in the material, and a measuring unit. The measuring unit determines when the device for producing a predetermined breaking point is to be activated in order to produce a predetermined breaking point in the material. The device also has a guide device which fixes the material on the coil to be wound in the vicinity of the predetermined breaking point at a predetermined time, in order to sever the material at the predetermined breaking point. The winding machine therefore anticipates when a layer change is required, in order to then produce a predetermined breaking point in the material at a distance from the coil. The predetermined breaking point is pulled through as far as the coil, and this enables the material to be guided in a controlled and reliable manner. The material is torn off at the predetermined breaking point only after the material is secured on the coil.

Description

Hintergrundbackground

Die hier beschriebenen Ausführungsbeispiele der Erfindung betreffen allgemein eine Vorrichtung und ein Verfahren zum Wickeln von elektrischen Spulen.The embodiments of the invention described herein generally relate to an apparatus and method for winding electrical coils.

Stand der TechnikState of the art

Bei einer bekannten Maschine zum Wickeln von elektrischen Spulen wird ein Träger angetrieben, um einen Spulendraht auf den Träger zu wickeln. Der Spulendraht ist von einem elektrisch isolierenden Material (z. B. Lack) umgeben. Die Maschine wickelt den Spulendraht Lage für Lage auf den Träger. Nachdem eine Lage gewickelt ist, wird ein Isolationsmaterial eingebracht, um diese Lage von der nächsten Lage zusätzlich zur Lackisolation zu trennen und elektrisch zu isolieren. Dieses Isolationsmaterial stellt eine Lagenisolation dar.In a known machine for winding electric coils, a carrier is driven to wind a coil wire on the carrier. The coil wire is surrounded by an electrically insulating material (eg paint). The machine winds the coil wire layer by layer on the carrier. After a layer is wound, an insulating material is introduced to separate and electrically insulate this layer from the next layer in addition to the paint insulation. This insulation material represents a layer isolation.

Um beispielsweise eine kompakte, d.h. dicht gepackte Hochspannungsspule zu wickeln, sollte die Lagenisolation möglichst satt gewickelt werden. Die Dicke der Lagenisolation muss auf die Spannungsverhältnisse in der Spule optimiert sein, um beispielsweise Spannungsdurchschläge zu vermeiden. Für eine kompakte Spule mit optimaler Isolationsdicke, wird die Lagenisolation während des Wickelprozesses am Ende einer Lage abgeschnitten und bei einem Lagenwechsel des Drahtes mit einem Klebeband wieder angeklebt. Dies erfolgt bei der bekannten Wickelmaschine in Handarbeit und erfordert, pro Drahtlage, typischerweise zwei Stopps der Wickelmaschine.For example, to wind a compact, ie densely packed high-voltage coil, the layer insulation should be wound as tight as possible. The thickness of the layer insulation must be optimized to the voltage conditions in the coil, for example, to avoid voltage breakdowns. For a compact coil with optimum insulation thickness, the layer insulation is cut off at the end of a layer during the winding process and glued back with a tape when the layer is changed. This is done in the known winding machine by hand and requires, per wire layer, typically two stops of the winding machine.

Aus der Auslegeschrift DE 1 007 437 ist eine Maschine zum Wickeln elektrischer Spulen bekannt, die einen Träger für eine in Drahtlagen zu wickelnde elektrische Spule und eine Einrichtung zur Zufuhr von Isolierstoffeinlagen zwischen die Drahtlagen aufweist. Es sind eine Isolierstreifenmessvorrichtung, eine Abtrennvorrichtung für die abgemessenen Streifen und eine Abgebevorrichtung vorgesehen, wobei die Abgebevorrichtung die abgeschnittenen Streifen von der Abtrennvorrichtung in bestimmten Zeitabschnitten zur Spule fördert.From the layout DE 1 007 437 For example, there is known a machine for winding electric coils comprising a support for an electric coil to be wound in wire layers and means for supplying insulator inserts between the wire layers. There is provided an insulating strip measuring device, a metered strip severing device, and a dispenser, wherein the dispenser feeds the cut strips from the severing device to the coil at certain time intervals.

Darstellung der ErfindungPresentation of the invention

Ein Ziel der hier beschriebenen Ausführungsbeispiele der Erfindung ist daher, das Wickeln von Spulen weiter zu automatisieren, um damit die Effizienz des Wickelns zu verbessern.An object of the embodiments of the invention described herein, therefore, is to further automate the winding of coils to thereby improve the efficiency of winding.

Ein Aspekt der Erfindung betrifft eine Vorrichtung zum Wickeln elektrischer Spulen mit einem Träger für eine in Lagen zu wickelnde elektrische Spule und mit einer Einrichtung, die der zu wickelnden Spule ein Material zuführt, um benachbarte Lagen der Spule voneinander zu trennen. Die Einrichtung hat eine vom Träger entfernt angeordnete Einrichtung zum Erzeugen einer Sollbruchstelle im Material, und eine zwischen dem Träger und der Einrichtung zum Erzeugen einer Sollbruchstelle angeordnete Messeinheit. Die Messeinheit bestimmt, wann die Einrichtung zum Erzeugen einer Sollbruchstelle zu aktivieren ist, um im Material eine Sollbruchstelle zu erzeugen. Die Einrichtung hat ausserdem eine Führungseinrichtung, die das Material nahe der Sollbruchstelle zu einem vorbestimmten Zeitpunkt auf der zu wickelnden Spule fixiert, um das Material an der Sollbruchstelle zu trennen.One aspect of the invention relates to a device for winding electric coils with a support for an electric coil to be wound in layers and with a device which supplies a material to the coil to be wound in order to separate adjacent layers of the coil from each other. The device has a device arranged away from the carrier for generating a predetermined breaking point in the material, and a measuring unit arranged between the carrier and the device for generating a predetermined breaking point. The measuring unit determines when the means for generating a predetermined breaking point is to be activated in order to generate a predetermined breaking point in the material. The device also has a guide device which fixes the material near the predetermined breaking point at a predetermined time on the coil to be wound in order to separate the material at the predetermined breaking point.

Ein weiterer Aspekt der Erfindung betrifft ein Verfahren zum Wickeln von elektrischen Spulen, bei denen übereinander liegende Lagen aus einem elektrischen Leiter durch ein Material von einander getrennt sind. Ein erstes Ende des Materials wird an einer festgelegten Stelle einer Lage einer zu wickelnden Spule befestigt, um das Material mit einer Nominaldrehzahl auf die Lage zu wickeln. Eine Sollbruchstelle im Material wird in Abhängigkeit eines momentanen Umfangs der zu wickelnden Spule und einer Bewegungsgeschwindigkeit des Materials erzeugt. Das Materials wird in einem Bereich der Sollbruchstelle auf der zu wickelnden Spule befestigt und auf das Material wird eine Zugkraft ausgeübt, um das Material an der Sollbruchstelle zu trennen.Another aspect of the invention relates to a method for winding electrical coils in which superimposed layers of an electrical conductor are separated by a material from each other. A first end of the material is secured to a predetermined location of a ply of a spool to be wound to wind the material at a nominal speed on the ply. A predetermined breaking point in the material is generated as a function of a current circumference of the coil to be wound and a speed of movement of the material. The material is secured in an area of the predetermined breaking point on the coil to be wound and a tensile force is exerted on the material in order to separate the material at the predetermined breaking point.

Ein Vorteil einer solchen Vorrichtung und eines solchen Verfahrens ist, dass der Wickelprozess kontinuierlich abläuft und nicht durch Stopps unterbrochen wird. Dies wird dadurch ermöglicht, dass vorausschauend bestimmt wird, wann ein Lagenwechsel erforderlich ist und dann von der Spule entfernt eine Sollbruchstelle im Material erzeugt wird. Die Sollbruchstelle wird bis zur Spule durchgezogen, was eine kontrollierte und sichere Führung des Materials ermöglicht. Erst nachdem das Material auf der Spule befestigt ist, wird das Material an der Sollbruchstelle abgerissen. Nach dem Abreissen wird das Material erneut sicher gehalten, um für den Anfang einer neuen Lage Materials bereit zu sein.An advantage of such a device and method is that the winding process is continuous and not interrupted by stops. This is made possible by the fact that it is determined in advance when a position change is required and then away from the coil a predetermined breaking point is generated in the material. The predetermined breaking point is pulled through to the coil, which allows a controlled and secure guidance of the material. Only after the material is mounted on the spool, the material is torn off at the predetermined breaking point. After tearing, the material is again held securely to be ready for the beginning of a new layer of material.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Weitere Ausgestaltungen, Vorteile, neue Eigenschaften und Anwendungen der Erfindung ergeben sich aus der folgenden detaillierten Beschreibung unter Einbezug der Zeichnungen. In den Zeichnungen haben gleiche Elemente die gleichen Bezugszeichen. In den Zeichnungen zeigen:

  • Figur 1 eine schematische Seitenansicht eines Ausführungsbeispiels einer Wickelmaschine, und
  • Figur 2 eine schematische Seitenansicht eines Ausführungsbeispiels eines Abrollers für Isolationsmaterial.
Further embodiments, advantages, novel features and applications of the invention will become apparent from the following detailed description with reference to the drawings. In the drawings, like elements have the same reference numerals. In the drawings show:
  • FIG. 1 a schematic side view of an embodiment of a winding machine, and
  • FIG. 2 a schematic side view of an embodiment of a unwinder for insulation material.

Detaillierte Beschreibung einigerDetailed description of some Ausführungsbeispieleembodiments

Die detaillierte Beschreibung einiger Ausführungsbeispiele erfolgt an Hand einer Vorrichtung zum Wickeln von elektrischen Spulen unterschiedlichster Art und Grösse. Die Vorrichtung ist beispielsweise zum Wickeln von Hochspannungsspulen geeignet, bei denen nach jeder Lage elektrischen Drahts ein Isolationsmaterial einfügt ist. Solche Spulen werden beispielsweise in Transformatoren und elektrischen Motoren verwendet. Die Vorrichtung ist im Folgenden als Wickelmaschine 1 bezeichnet.The detailed description of some embodiments will be made with reference to a device for winding electrical coils of various types and sizes. The device is suitable, for example, for winding high-voltage coils, in which after Each layer of electrical wire incorporates insulation material. Such coils are used for example in transformers and electric motors. The device is referred to below as a winding machine 1.

Figur 1 zeigt eine schematische Seitenansicht eines Ausführungsbeispiels einer Wickelmaschine 1. Die gezeigte Wickelmaschine 1 hat eine Steuereinrichtung 6, über die eine Bedienperson die Wickelmaschine 1 bedienen kann. Die Steuereinrichtung 6 enthält in einem Ausführungsbeispiel eine Steuer- und Kontrolleinrichtung mit anwendungsspezifischen Steuerprogrammen, eine Eingabeeinheit (z.B. eine Tastatur) zur Eingabe von Betriebs- und Spulenparametern, und eine Ausgabeeinheit (z.B. einen LCD Bildschirm) zur Anzeige von Betriebs- und Spulenparametern und Störungsmeldungen. Die Steuereinrichtung 6 kann in einem Ausführungsbeispiel ein mit entsprechenden Programmen ausgestatteter Computer sein. FIG. 1 shows a schematic side view of an embodiment of a winding machine 1. The winding machine 1 shown has a control device 6, via which an operator can operate the winding machine 1. The control device 6 includes in one embodiment a control and monitoring device with application-specific control programs, an input unit (eg a keyboard) for input of operating and coil parameters, and an output unit (eg an LCD screen) for displaying operating and coil parameters and fault messages. The controller 6 may, in one embodiment, be a computer equipped with appropriate programs.

In einem Gestell der Wickelmaschine 1 sind eine Drahtabrolleinrichtung 8, eine Abrolleinrichtung 2 und ein Aufwickler 4 untergebracht. Eine Schutztür, z. B. aus Schutzglas, einem Metallgitter, oder einer Kombination aus Glas und Gitter, ist im Bereich des Aufwicklers 4 am Gestell befestigt und verhindert, dass evtl. abbrechende Teile nach aussen dringen und die Bedienperson verletzen können. Die Drahtbremse 8 ist in einem Ausführungsbeispiel eine Vorrichtung, die einen von einem elektrischen Isolationsmaterial umgebenen elektrischen Leiter, z. B. einen Draht von einer Vorratsrolle abrollt und dem Aufwickler 4 zuführt. In der folgenden Beschreibung ist eine solche Drahtabrolleinrichtung 8 als Drahtbremse 8 bezeichnet. Der Draht ist ein Beispiel eines elektrischen Leiters und kann unterschiedliche Durchmesser haben, z. B., zwischen ca. 0,4 mm und ca. 4 mm. Es kann aber auch ein Rechteckdraht verwendet werden.In a frame of the winding machine 1, a Drahtabrolleinrichtung 8, a unwinding device 2 and a rewinder 4 are housed. A protective door, z. B. from protective glass, a metal grid, or a combination of glass and grid, is mounted in the field of rewinder 4 on the frame and prevents any breaking parts penetrate to the outside and can injure the operator. The wire brake 8 is in one embodiment, a device which surrounds an electrical insulation material surrounded by an electrical conductor, for. B. rolls a wire from a supply roll and the rewinder 4 feeds. In the following description, such a wire reeling device 8 is referred to as a wire brake 8. The wire is an example of an electrical conductor and may have different diameters, e.g. B., between about 0.4 mm and about 4 mm. But it can also be used a rectangular wire.

Der Aufwickler 4 hat einen Träger, den ein elektrischer Antrieb um eine Längsachse dreht. Der Träger kann ein Holz-, Kunststoff- oder Metallzylinder oder durch eine Niederspannungsspule realisiert seil. In dem in Figur 1 gezeigten Ausführungsbeispiel ist der Träger horizontal und aus Sicht der Bedienperson quer angeordnet. Eine Schraub- oder Klemmvorrichtung sichert ein Drahtende auf dem Träger zu Beginn und während des Wickelprozesses. Ist der Draht oder ein anderer elektrischer Leiter auf diesem Träger befestigt, zieht der Aufwickler 4 beispielsweise den Draht und wickelt ihn auf den Träger. Während der Drehung bewegt sich in einem Ausführungsbeispiel der Träger entlang seiner Längsachse in eine erste Richtung, um eine Spulenlage zu wickeln. Ist ein festgelegtes seitliches Ende der zu wickelnden Spule erreicht, kehrt die horizontale Bewegungsrichtung um, um eine weitere Spulenlage zu wickeln. Dies wiederholt sich, bis die gewünschte Anzahl von Lagen gewickelt ist. In einem anderen Ausführungsbeispiel kann anstelle des Trägers die Drahtbremse 8 so ausgestaltet sein, dass sie den Draht in horizontaler Richtung hin und herbewegt.The winder 4 has a carrier, which rotates an electric drive about a longitudinal axis. The carrier may be a wood, plastic or metal cylinder or rope realized by a low voltage coil. In the in FIG. 1 the embodiment shown, the carrier is arranged horizontally and transversely from the operator's point of view. A screw or clamping device secures a wire end on the carrier at the beginning and during the winding process. If the wire or other electrical conductor is mounted on this carrier, the rewinder 4, for example, pulls the wire and winds it onto the carrier. During rotation, in one embodiment, the carrier moves along its longitudinal axis in a first direction to wind a coil layer. When a fixed lateral end of the coil to be wound has been reached, the horizontal direction of movement reverses in order to wind another coil layer. This is repeated until the desired number of layers are wound. In another embodiment, instead of the carrier, the wire brake 8 may be configured to reciprocate the wire in a horizontal direction.

Auf dem Gebiet der Spulenwickeltechnik ist eine Lage eine Schicht eines elektrischen Leiters (z. B. Draht), die entsteht, wenn der elektrische Leiter, z. B. auf einen Zylinder gewickelt wird und die einzelnen Windungen des elektrischen Leiters nebeneinander zu liegen kommen. Die einzelnen Windungen können sich berühren oder durch einen Abstand getrennt sein. Unter dem Begriff Lage ist aber auch eine Schicht eines elektrischen Leiters zu verstehen, in der sich einzelne Windungen überlappen können.In the field of coil winding technology, a layer is a layer of electrical conductor (e.g., wire) that arises when the electrical conductor, e.g. B. is wound on a cylinder and the individual turns of the electrical conductor come to rest next to each other. The individual turns can touch or be separated by a distance. However, the term "layer" also means a layer of an electrical conductor in which individual windings can overlap.

Die Wickelmaschine 1 ist so ausgelegt, dass die Abrolleinrichtung 2 zwischen die einzelnen Spulenlagen ein Material einbringt, das die einzelnen Lagen von einander trennt. Die Abrolleinrichtung 2 ist in Figur 2 schematisch gezeigt und im folgenden näher beschrieben. Das Material erhöht den Abstand von benachbarten Lagen und reduziert daher die Gefahr, dass die Spannung von einer Lage zu einer benachbarten Lage durchschlägt. Das Material kann Papier, Kunststoff oder jegliches andere nichtleitende Material sein, das die Lagen trennt und in eine gewünschte bleibende Form (z.B. in Form eines Bandes) gebracht werden kann. In einem Ausführungsbeispiel ist das Material ein Papierstreifen oder -band von ca. 1-5 cm Breite und ca. 0,012-0,15 mm Dicke. Es versteht sich, dass das Material und dessen Breite und Dicke für die jeweilige Anwendung (z.B. Spannungs-, Temperatur-, und Feuchtigkeitsbereich) ausgewählt sind.The winding machine 1 is designed so that the unwinding device 2 introduces a material between the individual coil layers, which separates the individual layers from each other. The unwinding device 2 is in FIG. 2 shown schematically and closer in the following described. The material increases the distance from adjacent layers and therefore reduces the risk of stress from one layer to another adjacent layer. The material may be paper, plastic or any other non-conductive material that separates the layers and can be brought into a desired permanent shape (eg, in the form of a tape). In one embodiment, the material is a paper strip or ribbon about 1-5 cm wide and about 0.012-0.15 mm thick. It should be understood that the material and its width and thickness are selected for the particular application (eg, voltage, temperature, and humidity).

Figur 2 zeigt eine schematische Seitenansicht eines Ausführungsbeispiels der Abrolleinrichtung 2. Die Abrolleinrichtung 2 hat einen Träger 12, auf den ein Papierband 14 als Isolationsmaterial gewickelt ist. In der folgenden Beschreibung ist die Abrolleinrichtung 2 als Isolationsabroller 2 bezeichnet. FIG. 2 shows a schematic side view of an embodiment of the unwinding device 2. The unwinding device 2 has a carrier 12, on which a paper tape 14 is wound as insulation material. In the following description, the unwinding device 2 is referred to as insulation dispenser 2.

In Figur 2 ist der Träger 12 eine Rolle, die sich entgegen dem Uhrzeigersinn dreht. Mehrere Umlenkrollen 28, 30, 32, ein Vorrichtung 18 zum Erzeugen einer lokalen Schwächung des Material, d.h. einer Sollbruchstelle, eine Messeinheit 20 und eine Führungseinrichtung 26 führen das Papierband 14 zum Aufwickler 4. Die Führungseinrichtung 26 ist höhenverstellbar (durch einen Doppelpfeil 34 angedeutet) und vertikal um eine Achse 41 schwenkbar (durch einen Doppelpfeil 36 angedeutet), um sich an einen während des Wickelns zunehmenden Spulendurchmesser anzupassen. In Figur 2 kann sich der Spulendurchmesser beispielsweise von ca. 150 mm auf ca. 400 mm ändern.In FIG. 2 the carrier 12 is a roller that rotates counterclockwise. A plurality of deflection rollers 28, 30, 32, a device 18 for generating a local weakening of the material, ie a predetermined breaking point, a measuring unit 20 and a guide device 26 guide the paper tape 14 to the winder 4. The guide device 26 is height adjustable (indicated by a double arrow 34) and vertically pivotable about an axis 41 (indicated by a double arrow 36) to conform to an increasing coil diameter during winding. In FIG. 2 For example, the bobbin diameter may change from about 150 mm to about 400 mm.

Das Papierband 14 wird von dem Träger 12 abgerollt, der motorisch gebremst ist. Um einen gleichmässigen Papierzug zu gewährleisten, wird der Zug mittels einer Tänzereinheit 16 gesteuert, die auf den Träger 12 einwirkt. Das Papierband 14 wird über die Umlenkrollen 28, 30, 32 zur Vorrichtung 18 geführt. Mit der Messeinheit 20 werden der aktuelle Spulenumfang und die Geschwindigkeit des Papierbandes 14 ermittelt. Darüber hinaus ist die Strecke zwischen der Spule und der Vorrichtung 18 bekannt. Daraus kann berechnet werden, wann die Vorrichtung 18 zu aktivieren ist, um die Sollbruchstelle zu erzeugen. So wird beispielsweise die bekannte Distanz zwischen der Vorrichtung 18 und dem Spulenkörper durch den ermittelten Spulenumfang dividiert. Diese Division ergibt die Anzahl der Umdrehungen, die der Aufwickler 4 macht, bis die Sollbruchstelle die Spule erreicht.The paper tape 14 is unrolled from the carrier 12, which is braked by a motor. In order to ensure a uniform paper tension, the train is controlled by means of a dancer unit 16, which acts on the carrier 12. The paper tape 14 is over the Deflection rollers 28, 30, 32 led to the device 18. With the measuring unit 20 of the current coil circumference and the speed of the paper tape 14 are determined. In addition, the distance between the coil and the device 18 is known. From this it can be calculated when the device 18 is to be activated in order to generate the predetermined breaking point. For example, the known distance between the device 18 and the bobbin is divided by the determined coil circumference. This division gives the number of revolutions made by the rewinder 4 until the predetermined breaking point reaches the reel.

Die Vorrichtung 18 schwächt das Papierband 14 synchron zur Bandgeschwindigkeit. In einem Ausführungsbeispiel schwächt die Vorrichtung 18 das Papierband 14 durch eine Perforation an der gewünschten Stelle. Die Perforation dient somit als Sollbruchstelle. Um die Perforation zu erzeugen, drückt die Vorrichtung 18 das Papierband 14 in einem Ausführungsbeispiel mit einer gezackten Klinge 19 gegen ein Gegenstück 21. Die Klinge 19 ist so angeordnet, dass sie sich im wesentlichen quer (z.B. ungefähr im 90° Winkel) zur Länge des Papierbandes 14 erstreckt. Die Klinge 19 und das Gegenstück 21 rotieren synchron zur Bandgeschwindigkeit. Das Gegenstück 21 kann eine Kerbe oder eine elastische Oberfläche (z. B. gummiert) haben, in die die Zacken eindringen können. Die Zacken durchstossen das Papierband 14 ohne jedoch das Papierband 14 durchzutrennen. Trotzdem verursachen die Zacken eine lokale Schwächung des Papiers, beispielsweise quer zur Zugrichtung.The device 18 weakens the paper web 14 in synchronism with the belt speed. In one embodiment, the device 18 weakens the paper web 14 through a perforation at the desired location. The perforation thus serves as a predetermined breaking point. To create the perforation, the apparatus 18 presses the paper web 14 in one embodiment with a serrated blade 19 against a counterpart 21. The blade 19 is arranged to be substantially transversely (eg, approximately at 90 °) to the length of the paper Paper tape 14 extends. The blade 19 and the counterpart 21 rotate synchronously to the belt speed. The counterpart 21 may have a notch or elastic surface (e.g., rubberized) into which the prongs may enter. The serrations pierce the paper web 14 but without severing the paper tape 14. Nevertheless, the prongs cause a local weakening of the paper, for example, transverse to the direction of pull.

Anstelle einer gezackten Klinge kann die Perforierung auch mit einem Zackenrad erfolgen. In anderen Ausführungsbeispielen kann die angestrebte lokale Schwächung des Papiers, d.h. das Erzeugen einer Sollbruchstelle, auch auf eine andere Art und Weise erfolgen, beispielsweise durch Quetschen, Knicken oder Ritzen. Auch eine dadurch erzeugte Sollbruchstelle kann sich im wesentlichen quer zur Länge des Papierbandes (14) erstrecken.Instead of a serrated blade perforation can also be done with a toothed wheel. In other embodiments, the desired local weakening of the paper, ie the creation of a predetermined breaking point, can also be done in another way, for example by squeezing, kinking or scratching. Also, a predetermined breaking point generated thereby can extend substantially transversely to the length of the paper tape (14).

Die Führungseinrichtung 26 führt das Papierband 14 dem Aufwickler 4 und der zu wickelnden Spule kontrolliert zu. Dafür hat die höhenverstellbare und drehbare Führungseinrichtung 26 Umlenkrollen 38, 40 und eine Vakuumplatte 24. Die Vakuumplatte 24 ist an eine Saugpumpe angeschlossen, die einen Unterdruck erzeugt, der ausreicht, um das Papierband 14, oder ein Ende des Papierbandes 14, sicher zu halten.The guide means 26 guides the paper tape 14 to the rewinder 4 and the coil to be wound controlled. For this purpose, the height-adjustable and rotatable guide means 26 pulleys 38, 40 and a vacuum plate 24. The vacuum plate 24 is connected to a suction pump which generates a negative pressure sufficient to hold the paper tape 14, or one end of the paper tape 14 safely.

Am Isolationsabroller 2 ist im gezeigten Ausführungsbeispiel eine Vorrichtung 22 zum Aufbringen eines Klebemittels auf die Spule angebracht. Die Vorrichtung 22 kann zum Aufwickler 4 hin und davon weg bewegt werden (durch einen Doppelpfeil 42 angedeutet). In einem Ausführungsbeispiel ist das Klebemittel Heissleim, der in der Vorrichtung 22 erhitzt und durch eine Düse 44 appliziert wird. In einem anderen Ausführungsbeispiel kann das Klebemittel ein Sekundenleim, ein Kaltleim oder ein Klebeband sein.On Isolationsabroller 2, a device 22 for applying an adhesive is attached to the coil in the illustrated embodiment. The device 22 can be moved towards and away from the rewinder 4 (indicated by a double arrow 42). In one embodiment, the adhesive is hot glue, which is heated in the device 22 and applied through a nozzle 44. In another embodiment, the adhesive may be a seconds size, a cold glue or an adhesive tape.

Zum Applizieren des Heissleimes wird die Vorrichtung 22, während sich der Träger und die sich zu wickelnde Spule entgegen dem Uhrzeigersinn drehen, beispielsweise bis auf etwa 10-40 mm Abstand zum Träger bzw. zur zu wickelnden Spule ausgefahren. Der Heissleim wird mit Hilfe der Düse 44 auf die zu wickelnde Spule gespritzt, um eine Klebestelle 46 zu schaffen. Die Klebestelle 46 wird etwa eine viertel Umdrehung vor einem Aufpunkt 48 appliziert. Das Applizieren des Heissleims erfolgt ebenfalls ohne die Spule oder das Papierband 14 anzuhalten.To apply the hot glue, the device 22, while the carrier and the coil to be wound to rotate in the counterclockwise direction, for example, extended to about 10-40 mm distance from the carrier or to be wound coil. The hot glue is sprayed by means of the nozzle 44 onto the coil to be wound, in order to create a splice 46. The splice 46 is applied about a quarter turn in front of a Aufpunkt 48. The application of the hot glue is also carried out without stopping the spool or the paper tape 14.

Am Aufpunkt 48 ist das Papierband 14 in der Nähe aber ausserhalb der Sollbruchstelle auf die Klebestelle 46 zu drücken, und zwar so, dass die Sollbruchstelle in Laufrichtung des Papierbandes 14 vor der Klebestelle 46 liegt. Das Papierband 14 wir dafür mit der Vakuumplatte 24 auf die Klebestelle 46 gedrückt. Nachdem die Klebestelle 46 den Aufpunkt 48 passiert hat, hält die Führungseinrichtung 26 das Papierband 14, so dass es an der perforierten Stelle abreissen kann. Ein Ende des nun getrennten Papierbandes 14 verbleibt auf der Klebestelle 46, während die Vakuumplatte 24 das lose Ende des Papierbandes 14 hält, bis es am Ende einer Lage wieder auf die zu wickelnde Spule geklebt wird, um die nächste Lage Isolationsmaterial zu wickeln.At Aufpunkt 48, the paper tape 14 is to press in the vicinity but outside the predetermined breaking point on the splice 46, in such a way that the predetermined breaking point is in the direction of the paper tape 14 in front of the splice 46. The paper tape 14 we pressed with the vacuum plate 24 on the splice 46. After the splice 46 has passed the receptor point 48, the guide means 26 holds the paper web 14 so that it can tear off at the perforated location. One end of the now separate paper tape 14 remains on the splice 46, while the vacuum plate 24 holds the loose end of the paper tape 14 until it is glued back to the coil to be wound at the end of a layer to wrap the next layer of insulation material.

In einem Ausführungsbeispiel der Wickelmaschine 1 steuert die Steuereinrichtung 6 den Prozess des Ankleben eines losen Endes des Papierbandes 14. Während des Wickelprozesses existiert ein loses Ende vor dem Wickeln der ersten Lage des Isolationsmaterials, und nach dem Abreissen des Papierbandes 14 nach einer gewickelten Isolationslage. Dieses lose Ende ist auf der zu wickelnden Spule zu befestigen, um ein zuverlässiges Wickeln einer Isolationslage zu ermöglichen.In one embodiment of the winding machine 1, the control means 6 controls the process of adhering a loose end of the paper web 14. During the winding process, a loose end exists before winding the first layer of insulating material, and after tearing off the paper web 14 for a wound insulation layer. This loose end is to be mounted on the coil to be wound in order to allow a reliable winding of an insulating layer.

Voraussetzung für den Prozess des Anklebens ist, dass das Papierband 14 in Position ist und die Vakuumplatte 24 das lose Ende hält. Die Steuereinrichtung 6 reduziert die Drehzahl des Aufwicklers 4, z.B. von etwa 400 U/min auf etwa 20 U/min. Gesteuert von der Steuereinrichtung 6 fährt die Klebeeinrichtung 22 in Position (in ca. 10 mm Abstand zur Spule) und appliziert das Klebemittel. Der Isolationsabroller 2 reduziert den Zug auf das Papierband 14 auf einen aus dem Isolationsquerschnitt errechneten Minimalzug (z. B. ca. 16 N). Die Führungseinrichtung 26 wird abgesenkt, um mit der Vakuumplatte 24 das lose Ende des Papierbandes 14 am Aufpunkt 48 auf die Klebstelle 46 zu drücken. Nach zwei Umdrehungen der Spule erfolgt ein Isolations- und Drahtlagenwechsel, und die Drehzahl wird auf Nominaldrehzahl erhöht.Prerequisite for the process of sticking is that the paper tape 14 is in position and the vacuum plate 24 holds the loose end. The control device 6 reduces the speed of the rewinder 4, e.g. from about 400 rpm to about 20 rpm. Controlled by the control device 6, the adhesive device 22 moves into position (approximately 10 mm away from the coil) and applies the adhesive. The insulation dispenser 2 reduces the tension on the paper tape 14 to a minimum tension calculated from the insulation cross section (for example, approximately 16 N). The guide means 26 is lowered to press with the vacuum plate 24, the loose end of the paper tape 14 at the Aufpunkt 48 on the adhesive 46. After two turns of the coil, an insulation and wire layer change takes place, and the speed is increased to nominal speed.

In einem Ausführungsbeispiel der Wickelmaschine 1 steuert die Steuereinrichtung 6 auch den Prozess des Trennens des Papierbandes 14. Voraussetzung für den Prozess des Trennens ist, dass eine Lage Isolationsmaterial einschliesslich eines Randstreifens fertig gewickelt ist. Das Papierband 14 erstreckt sich daher von der Isolationslage bis in etwa zur Umlenkrolle 40 der Führungseinrichtung 26. Die Steuereinrichtung 6 reduziert die Drehzahl des Aufwicklers 4, z.B. von etwa 400 U/min auf etwa 60 U/min, und der Isolationsabroller 2 reduziert den Zug auf das Papierband 14.In one embodiment of the winding machine 1, the control device 6 also controls the process of separating the paper tape 14. The prerequisite for the process of separating is that one layer Insulation material including a border strip is finished wound. The paper tape 14 therefore extends from the insulating layer approximately to the deflection roller 40 of the guide device 26. The control device 6 reduces the speed of the winder 4, for example from about 400 U / min to about 60 U / min, and the Isolationsabroller 2 reduces the train on the paper tape 14.

Die Messeinheit 20 bestimmt, wann die Vorrichtung 18 zu aktivieren ist, um das Papierband 14 zu perforieren. Ist dies bestimmt, wird das Papierband 14 synchron zur Bandgeschwindigkeit perforiert und weiter in Richtung Aufwickler 4 gezogen.The measuring unit 20 determines when to activate the device 18 to perforate the paper web 14. Once this is determined, the paper tape 14 is perforated synchronously to the belt speed and pulled further in the direction of rewinder 4.

Gesteuert von der Steuereinrichtung 6 fährt die Klebeeinrichtung 22 in Position (z. B. in ca. 10 mm Abstand zur Spule), appliziert das Klebemittel auf die Klebestelle 46 und fährt die Klebeeinrichtung 22 zurück in ihre Ausgangsposition.Controlled by the control device 6, the adhesive device 22 moves into position (eg at a distance of about 10 mm from the coil), applies the adhesive to the splice 46 and moves the adhesive device 22 back into its starting position.

Der Aufwickler 4 dreht die Klebestelle 46 in Richtung des Aufpunktes 48. Die Führungseinrichtung 26 wird abgesenkt, um mit der Vakuumplatte 24 das Papierband 14 in der Nähe der Perforationsstelle am Aufpunkt 48 auf die Klebstelle 46 zu drücken.The rewinder 4 rotates the splice 46 in the direction of the Aufpunktes 48. The guide means 26 is lowered to press with the vacuum plate 24, the paper tape 14 in the vicinity of the perforation at the Aufpunkt 48 on the splice 46.

Eine mit der Führungseinrichtung 26 verbundene Klemmeinrichtung 39 wird aktiviert, so dass das Papierband 14 gespannt wird und an der Perforationsstelle abreisst. Die Klemmeinrichtung hat einen Pneumatikzylinder mit einem aufgesetzten Gummibelag, der auf das Isolationsmaterial gepresst wird. Dies erfolgt unmittelbar nachdem die Vakuumplatte 24 das Papierband 14 auf den Klebepunkt gepresst hat. Die Steuereinrichtung 6 schaltet das Vakuum ein, um das lose Ende des Papierbandes 14 zu halten. Die Vakuumplatte 24 wird von der Spule abgehoben und die Drehzahl wird auf Nominaldrehzahl erhöht.A clamping device 39 connected to the guide device 26 is activated, so that the paper tape 14 is tensioned and tears off at the perforation point. The clamping device has a pneumatic cylinder with an attached rubber coating, which is pressed onto the insulating material. This is done immediately after the vacuum plate 24 has pressed the paper tape 14 to the glue point. The controller 6 turns on the vacuum to hold the loose end of the paper web 14. The vacuum plate 24 is lifted off the spool and the speed is increased to nominal speed.

Während in der vorliegenden Anmeldung bevorzugte Ausführungen der Erfindung beschrieben sind, ist klar darauf hinzuweisen, dass die Erfindung nicht auf diese beschränkt ist und in auch anderer Weise innerhalb des Umfangs der folgenden Patentansprüche ausgeführt werden kann.While preferred embodiments of the invention are described in the present application, it should be clearly understood that the invention is not limited to this is limited and may be practiced otherwise within the scope of the following claims.

Claims (16)

  1. Apparatus for winding electrical coils, with a carrier (4) for an electrical coil that is to be wound in layers and with a device (2), that supplies the coil to be wound with a material (14) in order to separate adjacent layers of the coil from each other, wherein the device (2) comprises a measuring unit (20), characterized in that
    the device (2) has a device (18) for creating a predetermined breaking point in the material (14) that is arranged remotely from the carrier (4),
    the measuring unit (20) is arranged between the carrier (4) and the device (18) for creating a predetermined breaking point, wherein the measuring unit (20) determines, when the device (18) for creating a predetermined breaking point is to be activated to create a predetermined breaking point in the material (14) and
    the device (2), that supplies the coil to be wound with the material (14), has a guiding means (26), that fastens the material (14) close to the predetermined breaking point on the coil to be wound at a predetermined time in order to separate the material (14) at the predetermined breaking point.
  2. Apparatus according to claim 1, wherein the device (18) for creating a predetermined breaking point has a first element (19), that presses the material (14) against a second element (21) in order to perforate, to squeeze or to bend the material (14) to create a predetermined breaking point at a such weakened location.
  3. Apparatus according to claim 2, wherein the first element (19) has a jagged blade, whose jags perforate the material (14).
  4. Apparatus according to one of the preceding claims, wherein the measuring unit (20) is designed such in order to determine from a current perimeter of the coil to be wound and a speed of the material (14) when the device (18) for creating a predetermined breaking point is to be activated to create a predetermined breaking point in the material (14).
  5. Apparatus according to one of the preceding claims, wherein the guiding means (26) has a vacuum plate (24) that is connectable to a suction pump in order to securely hold the material (14) by means of negative pressure.
  6. Apparatus according to one of the preceding claims, wherein a device (22) for applying an adhesive onto the coil to be wound is provided.
  7. Apparatus according to claim 6, wherein the device (22) for applying an adhesive can be moved toward and away from the carrier (4).
  8. Apparatus according to one of the claims 6 or 7, wherein the device (22) for applying an adhesive has a nozzle (44), by which an adhesion point (46) can be set on the coil to be wound.
  9. Apparatus according to claim 8, wherein the guide means (26) are designed such that it presses the material (14) onto the adhesion point (46) in order to fasten the material (14) on the coil to be wound.
  10. Apparatus according to claim 9, wherein the guide means (26) are designed such that they release the fastened material (14) in the vicinity of the adhesion point (46), such that the material (14) can be separated at the predetermined breaking point through traction.
  11. Method for winding of electrical coils, wherein layers of an electrical conductor that lie on top of each other are separated from each other by a material (14), characterized in that
    a first end of the material (14) is fastened at a specified location of a layer of a coil to be wound in order to wind the material with a nominal rotation speed onto the layer,
    a predetermined breaking point is created in the material (14) in dependence on a current perimeter of the coil to be wound and a motion speed of the material (14),
    the material is fastened (14) in an area of the predetermined breaking point on the coil to be wound and
    a traction is exerted onto the material (14) in order to separate the material (14) at the predetermined breaking point.
  12. Method according to claim 11, wherein the material (14) is a ribbon made of paper or plastics that is perforated, squeezed or bent in order to create the predetermined breaking point.
  13. Method according to one of the claims 11 or 12, wherein for fastening the first end of the material (14)
    the first end is held,
    an adhesive is applied to the specified location and
    the first end is pressed onto the applied adhesive.
  14. Method according to claim 13, wherein for fastening of the first end of the material (14) additionally the rotation speed is reduced before the application of the adhesive and is again increased to the nominal rotation speed after the pressing-on of the first end.
  15. Method according to one of the claims 13 or 14, wherein for fastening of the first end of the material (14) after the pressing-on of the first end a layer change of the material is performed.
  16. Method according to one of the claims 11 to 15, wherein for fastening the material (14) on the coil to be wound in an area of the predetermined breaking point
    the rotation speed is reduced,
    an adhesive is applied to a location that is chosen such that the predetermined breaking point comes to lie in its vicinity,
    the material is pressed in the area of the predetermined breaking point into the adhesive,
    the material is tensioned such that it is separated at the predetermined breaking point and
    the rotation speed is increased to nominal rotation speed.
EP05777384A 2005-09-15 2005-09-15 Apparatus and method for winding electrical coils Expired - Lifetime EP1925005B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2005/000547 WO2007030955A1 (en) 2005-09-15 2005-09-15 Apparatus and method for winding electrical coils

Publications (2)

Publication Number Publication Date
EP1925005A1 EP1925005A1 (en) 2008-05-28
EP1925005B1 true EP1925005B1 (en) 2011-02-23

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EP05777384A Expired - Lifetime EP1925005B1 (en) 2005-09-15 2005-09-15 Apparatus and method for winding electrical coils

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US (1) US8042759B2 (en)
EP (1) EP1925005B1 (en)
AT (1) ATE499692T1 (en)
DE (1) DE502005011015D1 (en)
WO (1) WO2007030955A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006520746A (en) 2002-12-27 2006-09-14 カイロン コーポレイション Immunogenic compositions comprising phospholipids
RU2494488C1 (en) * 2012-04-04 2013-09-27 Открытое Акционерное Общество Холдинговая Компания "Электрозавод" (Оао "Электрозавод") Plant to wind windings of transformers and reactors
RU173067U1 (en) * 2016-07-04 2017-08-08 Вячеслав Юрьевич Цыбульский Stamping foil cutting machine
JP6617747B2 (en) * 2017-05-12 2019-12-11 株式会社村田製作所 Winding device and method of manufacturing coil component
CN113019812B (en) * 2021-02-07 2022-05-13 深圳市鑫汇科股份有限公司 Automatic winding and dispensing device and method
CN114496552B (en) * 2022-02-11 2023-09-12 安徽龙磁新能源技术有限公司 Inductance thread end protection device
DE102023123469A1 (en) 2023-08-31 2025-03-06 Bayerische Motoren Werke Aktiengesellschaft Arrangement for a wire winding machine for producing a coil package and wire winding machine
CN119694781B (en) * 2024-12-17 2025-10-03 湖北宝罗电缆有限公司 Transformer processing equipment and method

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US1970462A (en) * 1931-09-02 1934-08-14 Universal Winding Co Winding machine
US2029577A (en) * 1932-04-09 1936-02-04 Universal Winding Co Machine for winding electrical coils
US2649252A (en) * 1950-05-31 1953-08-18 Western Electric Co Paper measuring and delivery mechanism for coil winding machines
US2688450A (en) * 1951-02-14 1954-09-07 Universal Winding Co Coil winding machine
DE1007437B (en) 1951-02-14 1957-05-02 Universal Winding Co Machine for winding electrical coils with inserts provided between the wire layers
CH494095A (en) * 1968-08-05 1970-07-31 B Vereinigte Elektrobetr E Ger Method and device for perforating materials
US3692250A (en) * 1969-12-22 1972-09-19 Leesona Corp Coil winding machine
FI51642C (en) * 1976-01-28 1977-02-10 Stroemberg Oy Ab A method of making high voltage switchgear insulation consisting of alternating layers of insulating film and metal film.

Also Published As

Publication number Publication date
US20090139636A1 (en) 2009-06-04
DE502005011015D1 (en) 2011-04-07
EP1925005A1 (en) 2008-05-28
ATE499692T1 (en) 2011-03-15
WO2007030955A1 (en) 2007-03-22
US8042759B2 (en) 2011-10-25

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