EP1925005B1 - Dispositif et procede pour enrouler des bobines electriques - Google Patents
Dispositif et procede pour enrouler des bobines electriques Download PDFInfo
- 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
- Authority
- 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.)
- Active
Links
- 238000004804 winding Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 18
- 239000000463 material Substances 0.000 claims abstract description 66
- 239000000853 adhesive Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 description 10
- 239000012774 insulation material Substances 0.000 description 6
- 239000004831 Hot glue Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000012772 electrical insulation material Substances 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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.
Landscapes
- 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)
Claims (16)
- Dispositif pour bobiner des bobines électriques, avec un support (4) pour une bobine électrique à bobiner en couches et avec une installation (2) qui livre un matériau (14) à la bobine à bobiner, pour séparer des couches voisines de la bobine l'une de l'autre, l'installation (2) ayant une unité de mesure (20), caractérisé en ce que
l'installation (2) a un dispositif (18) pour générer un point de rupture dans le matériau (14), arrangé loin du support (4),
l'unité de mesure (20) est arrangée entre le support (4) et le dispositif (18) pour générer un point de rupture, l'unité de mesure (20) déterminant quand le dispositif (18) pour générer un point de rupture doit être activé pour générer un point de rupture dans le matériau (14), et
l'installation (2) qui livre le matériau (14) à la bobine à bobiner a un système de guidage (26) qui fixe le matériau (14) sur la bobine à bobiner, près du point de rupture, dans un moment prédéfini, pour séparer le matériau (14) au point de rupture. - Dispositif selon la revendication 1, pour lequel le dispositif (18) pour générer un point de rupture a un premier élément (19) qui pousse le matériau (14) contre un deuxième élément (21) pour perforer, presser ou plier le matériau (14) pour générer le point de rupture à l'endroit ainsi affaibli.
- Dispositif selon la revendication 2, pour lequel le premier élément (19) est une lame dentelée, ses dents perforant le matériau (14).
- Dispositif selon l'une des revendications précédentes, pour lequel l'unité de mesure (20) est formée de sorte à déterminer, à partir d'une circonférence actuelle de la bobine à bobiner et d'une vitesse du matériau (14), quand le dispositif (18) pour générer un point de rupture doit être activé pour générer le point de rupture dans le matériau (14).
- Dispositif selon l'une des revendications précédentes, pour lequel le système de guidage (26) a une plaque à vide (24) connectable à une pompe aspirante pour tenir le matériau (14) en toute sécurité à l'aide d'une basse pression.
- Dispositif selon l'une des revendications précédentes, pour lequel un dispositif (22) pour l'application d'une colle est présent sur la bobine à bobiner.
- Dispositif selon la revendication 6, pour lequel le dispositif (22) pour l'application d'une colle peut être approché et éloigné du support (4).
- Dispositif selon l'une des revendications 6 ou 7, pour lequel le dispositif (22) pour l'application d'une colle a une buse (44), à l'aide de laquelle une surface adhésive (46) peut être établie sur la bobine à bobiner.
- Dispositif selon la revendication 8, pour lequel le système de guidage (26) est formé de sorte que le matériau (14) est poussé sur la surface adhésive (46) pour fixer le matériau sur la bobine à bobiner.
- Dispositif selon la revendication 9, pour lequel le système de guidage (26) est formé de sorte qu'il libère le matériau (14) fixé, prés de la surface adhésive (46), à tel point que le matériau (14) soit séparable par tirage au point de rupture.
- Méthode pour bobiner des bobines électriques, pour lesquelles des couches d'un conducteur électrique superposées sont séparées l'une de l'autre par un matériau (14), caractérisée en ce que
un premier bout du matériau (14) est attaché dans une position prédéfinie d'une couche d'une bobine à bobiner, pour bobiner le matériau (14) sur la couche avec un nombre de tours nominal,
un point de rupture dans le matériau (14) est généré dépendant d'une circonférence actuelle de la bobine à bobiner et d'une vitesse de mouvement du matériau (14),
le matériau (14) est attaché sur la bobine à bobiner dans une région du point de rupture, et
une force de traction est exercée sur le matériau (14) pour séparer le matériau au point de rupture. - Méthode selon la revendication 11, pour laquelle le matériau (14) est une bande de papier ou plastique qui est perforée, pressée ou pliée, pour générer le point de rupture.
- Méthode selon l'une des revendications 11 ou 12, pour laquelle, afin d'attacher le premier bout du matériau (14),
le premier bout est tenu,
une colle est appliquée sur la surface prédéfinie, et
le premier bout est poussé sur la colle qui à été appliquée. - Méthode selon la revendication 13, pour laquelle, afin d'attacher le premier bout du matériau (14), le nombre de tours est en outre réduit avant d'appliquer la colle et augmenté de nouveau jusqu'au nombre de tours nominal après la pousse du premier bout.
- Méthode selon l'une des revendications 13 ou 14, pour laquelle, afin d'attacher le premier bout du matériau (14), un changement de couche du matériau (14) est effectué après la pousse du premier bout.
- Méthode selon l'une des revendications 11 à 15, pour laquelle, afin d'attacher le matériau (14) sur la bobine à bobiner dans une région du point de rupture,
le nombre de tours est réduit,
une colle est appliquée sur une surface choisie de sorte que le point de rupture se pose prés d'elle,
le matériau est poussé dans la colle dans la région du point de rupture,
le matériau est tendu de sorte qu'il soit séparé au point de rupture, et
le nombre de tours est augmenté jusqu'à le nombre de tours nominal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2005/000547 WO2007030955A1 (fr) | 2005-09-15 | 2005-09-15 | Dispositif et procede pour enrouler des bobines electriques |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1925005A1 EP1925005A1 (fr) | 2008-05-28 |
EP1925005B1 true EP1925005B1 (fr) | 2011-02-23 |
Family
ID=36337629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05777384A Active EP1925005B1 (fr) | 2005-09-15 | 2005-09-15 | Dispositif et procede pour enrouler des bobines electriques |
Country Status (5)
Country | Link |
---|---|
US (1) | US8042759B2 (fr) |
EP (1) | EP1925005B1 (fr) |
AT (1) | ATE499692T1 (fr) |
DE (1) | DE502005011015D1 (fr) |
WO (1) | WO2007030955A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004060396A2 (fr) * | 2002-12-27 | 2004-07-22 | Chiron Corporation | Immunogenes contenant des compositions de phospholipide |
RU2494488C1 (ru) * | 2012-04-04 | 2013-09-27 | Открытое Акционерное Общество Холдинговая Компания "Электрозавод" (Оао "Электрозавод") | Установка для намотки обмоток трансформаторов и реакторов |
RU173067U1 (ru) * | 2016-07-04 | 2017-08-08 | Вячеслав Юрьевич Цыбульский | Станок для форматной нарезки фольги для тиснения |
JP6617747B2 (ja) * | 2017-05-12 | 2019-12-11 | 株式会社村田製作所 | 巻線装置及びコイル部品の製造方法 |
CN113019812B (zh) * | 2021-02-07 | 2022-05-13 | 深圳市鑫汇科股份有限公司 | 自动绕线点胶装置及方法 |
CN114496552B (zh) * | 2022-02-11 | 2023-09-12 | 安徽龙磁新能源技术有限公司 | 一种电感线头防护装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE1007437B (de) | 1951-02-14 | 1957-05-02 | Universal Winding Co | Maschine zum Wickeln elektrischer Spulen mit zwischen den Drahtlagen vorgesehenen Isolierstoffeinlagen |
US2688450A (en) * | 1951-02-14 | 1954-09-07 | Universal Winding Co | Coil winding machine |
CH494095A (de) * | 1968-08-05 | 1970-07-31 | B Vereinigte Elektrobetr E Ger | Verfahren und Vorrichtung zum Perforieren von Werkstoffen |
US3692250A (en) * | 1969-12-22 | 1972-09-19 | Leesona Corp | Coil winding machine |
FI51642C (fi) * | 1976-01-28 | 1977-02-10 | Stroemberg Oy Ab | Menetelmä vuorottaisista eristyskalvo- ja metallikalvokerroksista koos tuvan suurjännitekoje-eristyksen valmistamiseksi. |
-
2005
- 2005-09-15 US US12/067,134 patent/US8042759B2/en active Active
- 2005-09-15 EP EP05777384A patent/EP1925005B1/fr active Active
- 2005-09-15 DE DE502005011015T patent/DE502005011015D1/de active Active
- 2005-09-15 WO PCT/CH2005/000547 patent/WO2007030955A1/fr active Application Filing
- 2005-09-15 AT AT05777384T patent/ATE499692T1/de active
Also Published As
Publication number | Publication date |
---|---|
DE502005011015D1 (de) | 2011-04-07 |
US8042759B2 (en) | 2011-10-25 |
ATE499692T1 (de) | 2011-03-15 |
US20090139636A1 (en) | 2009-06-04 |
WO2007030955A1 (fr) | 2007-03-22 |
EP1925005A1 (fr) | 2008-05-28 |
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