EP0081446A1 - Verfahren und Vorrichtung zum Wickeln von induktiven Spulen mit denen elektrische Geräte, wie Transformatoren, ausgerüstet sind - Google Patents

Verfahren und Vorrichtung zum Wickeln von induktiven Spulen mit denen elektrische Geräte, wie Transformatoren, ausgerüstet sind Download PDF

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Publication number
EP0081446A1
EP0081446A1 EP82440037A EP82440037A EP0081446A1 EP 0081446 A1 EP0081446 A1 EP 0081446A1 EP 82440037 A EP82440037 A EP 82440037A EP 82440037 A EP82440037 A EP 82440037A EP 0081446 A1 EP0081446 A1 EP 0081446A1
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EP
European Patent Office
Prior art keywords
wire
winding
speed
space
winding support
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Granted
Application number
EP82440037A
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English (en)
French (fr)
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EP0081446B1 (de
Inventor
Miguel Vazquez
René Bildé
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France Transfo SAS
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France Transfo SAS
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Publication date
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Application filed by France Transfo SAS filed Critical France Transfo SAS
Priority to AT82440037T priority Critical patent/ATE20331T1/de
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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
    • H01F41/06—Coil winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/76—Depositing materials in cans or receptacles
    • B65H54/80—Apparatus in which the depositing device or the receptacle is rotated
    • 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
    • H01F41/096—Dispensing or feeding devices

Definitions

  • the present invention is in the field of construction of inductive electrical devices, in particular of the static type, such as transformers.
  • the invention relates to the realization of the winding of inductive windings equipping the aforementioned devices and especially, but not exclusively, the winding of medium or high voltage windings of transformers.
  • winding transformer windings consists in winding one or more electrically conductive wires, generally made of copper, around and along a winding support according to a "solenoid" type structure with contiguous turns. forming an annular layer. Generally, this elementary operation is repeated several times in succession to result in a complete winding, the arrangement of which is in the form of a cylindrical coil composed of several concentric annular layers.
  • these added insulating layers have essentially two functions: on the one hand, to avoid breakdowns between turns which are electrically distant from one another, but immediately adjacent to two adjacent layers, when applied to the entry of the 'winding nominal working voltage; on the other hand and above all, to ensure good resistance during sudden overvoltages due, for example, to lightning strikes.
  • shock wave tests which consist in applying to the input of the transformer a voltage wave with steep edges of very short duration and very high amplitude, are, in some cases, carried out under a contractual voltage more than five times higher than the nominal voltage of the transformer.
  • the breakdown threshold tests in normal operation are carried out at a voltage only twice the nominal voltage.
  • the invention aims to achieve a winding structure in which the capacities in parallel, responsible for the above-mentioned concentrations of electrical stresses, are sufficiently reduced to obtain a substantially uniform and linear damping of the voltage along the winding. .
  • Another object of the invention is to produce a winding capable of meeting the above-mentioned requirements under industrial production conditions.
  • the wire is imparted a relative movement of rotation around the winding support by rotating the latter around its axis.
  • the speed V of feeding the wire into the receiving space is kept constant and the speed Widu relative winding movement of the wire around the winding support is regulated as a function of the rank of the whorl in formation according to the following relation:
  • the wire feeding unit is constituted by a mobile unit in vertical translation and adjustable in height.
  • the invention is based on the well-known kinematic law which links the linear speed and the angular speed of a circular movement with each other as a function of the radius of the trajectory.
  • the invention applies this law by operating a synchronism between the speed of feed of the wire and its speed of winding in turns, synchronism adjusted to impose a desired and predetermined value on the diameter of the turn in formation by modulating one speeds relative to the other kept fixed.
  • this value is regulated in time during the winding to reach a winding arranged in a stack of wafers each constituted by a spiral flat coil which develops radially alternately in the centrifugal direction and in the centripetal direction when passing from one cake to the next.
  • the invention realizes a winding method capable of meeting the specific criteria of industrial production techniques, otherwise difficult to envisage, at least in the current state of knowledge, to obtain the ideally ordered winding structure mentioned above. above.
  • the apparatus of FIG. 1 is made up of a winder 1 controlled by a programmable automaton 2 via a control unit 3.
  • the plate 6 is driven in rotation on its vertical axis 10 by a belt 11 moved by a pinion 12 and forming a reduction torque actuated by a variable speed motor (Mp) 13 es camouflaged in the frame.
  • Mp variable speed motor
  • a cylindrical body 14, constituting the winding support, is placed vertically on the plate 6 while being centered on the axis of rotation 10.
  • the winding support 14 is surrounded at a distance by a coaxial sheath 15 defining between them an annular space 16 intended to receive the winding.
  • This space is closed at its base by the surface of the plate 6 and its upper end is left open for the introduction of the electric wire to be wound.
  • the moving element 7 constitutes a unit for feeding this electric wire, visible at 17, into the winding space 16 from a conventional reel, not shown so as not to overload the figure unnecessarily.
  • This equipment is configured in a housing without lateral faces.
  • the front face 41 comprises two identical pairs of rollers 19, 19 ′ arranged one above the other and driving, by means of two guide belts 20, 20 ′, the wire 17 from the top to the bottom in the direction indicated by the arrow.
  • the rear vertical face 21 'of the housing is equipped with two sleeves 22, 22' sliding on the columns 8, 8 'and a threaded ring, not visible, taken in a vertical worm screw 23. This screw is driven by a motor (Mg) 24 ensuring the height adjustment of the moving assembly 7 and mounted on a platform 25 fixed to the end of the columns 8, 8 '.
  • Mg motor
  • rollers 19, 19 ′ are actuated in rotation by a variable speed motor (Mf) 26 fixed to the rear of a support flange 27 placed between the front 41 and rear 21 faces of the crew 7.
  • Mf variable speed motor
  • the front face of the flange carries the members for transmitting the movement by gear reduction, comprising, as can be seen, a belt 28 connecting a small driving pinion 29 to a driven pinion 30, which, by a set of non-gears visible, activates the upper rollers 19 which, in turn drive the lower rollers thanks to the belts 20 and 20 1 .
  • the flange 27 is attached at a distance to the front face 41 using fixing spacers 31. Furthermore, the front face 41 is itself held between two horizontal plates 32 respectively upper 32 and lower 33 produced by folding the rear 21.
  • each plate 32, 33 has at its front end a substantially vertical tube; respectively 34, 35, for guiding the electrically conductive wire 17.
  • the guide tube 34 of the upper plate constitutes a means of receiving the wire from the reel (not shown) and delivers it, at its lower opening, at the entrance to the set of drive rollers 19, 19 'between the strands inside of the conveyor belts 20, 20 '.
  • the guide tube 35 is centered at the outlet of the set of rollers, from which it receives the wire 17 by its upper open end and delivers it by its lower end.
  • This opens into the reception space 16 by printing on the wire a tangential trajectory preformed in a turn thanks to its end portion 36 bent horizontally in the direction of rotation of the plate 6 and folded in the direction of the axis 10 of the tray by marrying the curvature of the space 16.
  • this terminal part 36 has a double curvature in "S" whose shape and role will be specified at the end.
  • This set is completed by three tachometers 37, 38 and 39 each equipping a motor, and an incremental encoder 40 mounted at the end of the motor shaft (Mf) 26 for driving the wire.
  • an electrical connection box symbolized at 58 on the blank of the chassis 4, connects the winder to its annexes, which are the control unit 3 and the programmable controller 2 controlling the whole.
  • the keyboard 42 for entering the operating parameters of the winder has been shown diagrammatically, and at 43 the screens for displaying the operating characteristics.
  • This automaton has been programmed to enable it to control the operation of the winder in accordance with the method according to the invention and which will be described later.
  • the control unit 3 comprises three sub-assemblies 44, 45 and 46 which represent electronic speed variators controlling the running of the motors of the winder. As can be seen in detail in FIG. 2, these variators each consist of a regulation loop comprising a comparator 47, 48, 49 the output of which is connected to the motor and the input of which is connected to the tachometer of the motor in question and the another input receives a setpoint representative of the speed to be applied to said motor.
  • the respective setpoints of the motors (Mp) 13 and (Mg) 24 are developed by the programmable controller 2 after shaping the signals in digital / analog converters 50.51, while for the wire drive motor (Mf) 26, the setpoint is provided by a manual speed selector 52.
  • This selector is a potentiometer with studs allowing the speed of the motor to be adjusted to a reference value chosen in advance.
  • the automaton 2 receives on these “process control” inputs, on the one hand, a signal (F) representative of the speed of the motor (Mf) 26 for driving the wire supplied by the incremental encoder 40 and, d on the other hand, two signals (P) and (H) representative, at each instant, of the number of turns carried out respectively by the motor (Mp) 13 for driving the plate 6 and the motor (Mg) 24 for adjusting the height of the moving part 7, these two signals being provided by integrators 53 and 54.
  • the preliminary operation consists in centering the winding support 14 on the rotary plate 6 and in anchoring the wire 17 by its free end at the base of this support by any suitable means, for example using a simple slot provided in the support 14.
  • the coaxial sheath 15 is then placed around the support 14 as shown in FIG. 1 to laterally confine the receiving space 16 of the winding to be produced. Then the movable element 7 is positioned laterally to place the guide tube 35 midway between the support 14 and the sleeve 15, and the movable element 7 is positioned in the low position so that the bent end 36 of the tube guide 35 opens in the vicinity of the anchor point of the wire 17.
  • the operator enters the operating constants into the machine 2 via the keyboard 42 on the front of the latter.
  • ai is an integer variable indicating the desired rank of the i th turn in the wafer being formed in the reception space 16 and counted from the winding support 14, the increment i therefore going from 1 to n, and vice versa.
  • the values taken by the discrete variable ai are obtained continuously by the remainder (r) of the division between the values of the signal (P) and the signal (H), either directly if (H) is odd, or by the complement to "n" if (H) is of even order.
  • the feed speed V of the wire is a variable calculated by the automaton 2 from a reading of the signal (F) received by the incremental encoder 40 equipping the motor ( Mf) 26.
  • V provides control of the diameter of the whorl in formation and therefore makes it possible to wind a first spiral wafer from the inside, then, when the number n of whorls is reached, a second wafer spiraled this time from the periphery, and which arises on the previous one and so on until the maximum number G of authorized wafers is obtained.
  • the G data is determined depending on the diameter of the wire so as to fill the receiving space 16 at 4/5 around.
  • the automaton 2 via the speed controller 44 (fig. 1), orders the motor (Mg) 24 to mount the unit 7 for feeding the wire d 'a height equal to the diameter of the latter.
  • the motor (Mg) 24 to mount the unit 7 for feeding the wire d 'a height equal to the diameter of the latter.
  • one of the determining aspects of the invention resides in the fact that the wire 17 is, not pulled by the rotating winding support 14, but pushed by the supply system 7, said thrust cooperating with the winding action so as to translate, at the level of the whorl being formed, by a radial force, the direction of which - centrifugal or centripetal, as well as the intensity, depend on the degree of advancement of the winding.
  • This effort gives said turn the desired diameter appropriate to the place, that is to say the rank assigned to it within the flat wafer in formation.
  • This figure illustrates an example of winding according to the invention comprising six turns per wafer.
  • the average shape of the curve representative of W over the period represented is that of two symmetrical hyperbolic sections placed end to end: the first section of decreasing slope corresponds to the "centrifugal" type formation of the first wafer , the next section, of increasing slope, represent the "centripetal" type formation of the second pancake,
  • the curve is formed of successive steps with variable height offsets reflecting the discrete variations in the speed of rotation of the plate occurring during the passage from one turn to the next in the same pancake.
  • test winding in accordance with the invention easily supports voltage pulses going over 200 kV.
  • the invention in its most general sense, involves two distinct operations having kinematics of a relative nature: the winding of the turns on the one hand, and the enslavement between the speed of said winding and the wire feed speed, on the other hand.
  • the winding of the coils can in fact be achieved, not only by the rotation of the winding support, the point of supply of the wire being fixed in space, but also, and in an equivalent manner, by preserving the support of stationary winding and spinning the wire around.
  • This can be achieved, for example, by means of a wire feeding unit, such as 7, which is designed as a pivoting turret centered above the plate.
  • the enslavement to be made between the winding speed of the turns and the wire feeding speed can be achieved, not only by modulating the winding speed W, the feeding speed V being kept constant, but still, and in an equivalent manner, by fixing the winding speed at a determined reference value and by regulating the speed of feeding the wire.
  • Figure 4 - analogous to Figure 3- shows the shape of the curve representative of the variations to be given to the speed V of the wire feed when that of winding W of the turns is kept constant.
  • each segment is in fact made up of a succession of bearings connected by equal vertical portions, corresponding to the speed increment of 2dW to be added (or subtracted) to the feed rate of the wire. when moving from one turn to the next on the same wafer.
  • the device described above includes means allowing it to operate either at speed constant wire V, or constant winding speed W of the turns.
  • These means consist of a selector with two positions 55, making it possible to connect the incremental encoder 40 to one or the other of the motors (Mf) 26 or (Mp) 13, and by an inverter 56, the transfer to the left of which relative to its position shown in the figure, makes it possible to apply the speed reference (R) to the input of the comparator 48 of the motor! GMp) 13 and to connect the comparator 47 of the motor (Mf ) 26 to converter 50.
  • a general switch 57 is provided on the automaton 2 allowing the control of these means at the same time as the passage from one walking program to another depending on the choice of speed, V or W, which is kept constant.
  • the possibility of adjusting the height of the supply unit 7 cannot, in all rigor, constitute an essential characteristic of the invention.
  • it has the utility, as already said, of delivering the wire into the reception space in the vicinity in height of the place where the turns are deposited and thus contributes, by minimizing the time between the moment of formation of the turn and its removal within the wafer in constitution, to improve the order of the arrangement of the turns in the particular structure of the desired winding.
  • Another arrangement which is not essential but which also makes it possible to minimize the expansion coefficient, lies in the folded and bent shape of the terminal part 36 of the guide tube 35 for feeding the wire.
  • This arrangement provides a substantially tangential introduction of the wire into the receiving space and consequently makes it possible to preform the wire into a turn which fits into the space. annular 16.
  • the location of the guide tube 35 midway between the winding support and the outer sheath makes it possible to give this turn an average diameter, which also tends to improve the quality of the storage of the turns.
  • Another alternative embodiment making it possible to get even closer to the ideal winding structure consists in providing a mechanism for lateral displacement of the tube 35 (possibly of the movable assembly 7 for feeding the wire) to control the position of its end. outlet to the diameter of the whorl being formed so as to deliver the wire into the receiving space at a point located directly above the location for depositing each whorl.
  • sheath 15 used to delimit the size of the winding may advantageously be a permanently placed cardboard ferrule, which will also serve thereafter to isolate the winding from the mass of the destination tank. final.
  • a particularly interesting aspect of the invention therefore lies in the fact that it allows a complete transformer element to be produced directly which can be placed on its magnetic core, without preparation or modification of any kind, except where appropriate, the installation of the usual clamping discs at the ends of the winding, although one of them may advantageously be provided initially at the base of the receiving space when the support of the winding and sheath on the winder table.
  • the invention is entirely compatible with the installation, if desired, of a winding cooling system. This poses no unmanaged problem, as it is easy to insert cooling channels between the wafers by introducing perforated discs, during winding by momentary stops of the winder.
  • the invention can be implemented with smallest diameter wires up to values greater than 10 mm.
  • Windings can be carried out without difficulty at high speed (ie several hundred revolutions / min), each wire diameter having of course its winding speed or its speed range: optimal winding that the skilled person will quickly know determine whether he wishes to implement the invention at the best productivity conditions.
  • a 0.9 mm diameter copper wire can be perfectly accommodated with peak speeds of rotation of the plate of around 400 rpm.
  • the invention preferably applies, without being limited to high and medium voltage windings of transformers.
  • the invention is not limited to this application, but extends to the production of electrical windings intended for any inductive device, in particular of static type, having a large number of turns usually organized in long concentric layers.
  • the invention can use electrically conductive wires to be wound in different formats (round, square, rectangular) and of different sizes.
  • the invention also covers the production of instant winding with a single wire than with multiple wires.
  • the operator remains free as to the choice of the operating parameters of the winding device, in particular as to the choice of the reference speed, which he will be able to predetermine according to his wishes or necessities.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coil Winding Methods And Apparatuses (AREA)
  • Insulating Of Coils (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Winding Filamentary Materials (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Windings For Motors And Generators (AREA)
EP82440037A 1981-12-01 1982-11-19 Verfahren und Vorrichtung zum Wickeln von induktiven Spulen mit denen elektrische Geräte, wie Transformatoren, ausgerüstet sind Expired EP0081446B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82440037T ATE20331T1 (de) 1981-12-01 1982-11-19 Verfahren und vorrichtung zum wickeln von induktiven spulen mit denen elektrische geraete, wie transformatoren, ausgeruestet sind.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8122614A FR2517462B1 (fr) 1981-12-01 1981-12-01 Procede et dispositif de bobinage des enroulements inductifs equipant les appareils electriques, tels que les transformateurs
FR8122614 1981-12-01

Publications (2)

Publication Number Publication Date
EP0081446A1 true EP0081446A1 (de) 1983-06-15
EP0081446B1 EP0081446B1 (de) 1986-06-11

Family

ID=9264616

Family Applications (1)

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EP82440037A Expired EP0081446B1 (de) 1981-12-01 1982-11-19 Verfahren und Vorrichtung zum Wickeln von induktiven Spulen mit denen elektrische Geräte, wie Transformatoren, ausgerüstet sind

Country Status (13)

Country Link
US (1) US4491284A (de)
EP (1) EP0081446B1 (de)
JP (1) JPS58161310A (de)
KR (1) KR880001084B1 (de)
AT (1) ATE20331T1 (de)
CA (1) CA1206733A (de)
DE (1) DE3271688D1 (de)
DK (1) DK159223C (de)
ES (1) ES517797A0 (de)
FR (1) FR2517462B1 (de)
IE (1) IE53970B1 (de)
PT (1) PT75919B (de)
SG (1) SG26289G (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0448977A3 (en) * 1990-03-26 1993-01-13 B.A.T. Cigaretten-Fabriken Gmbh Method and device for the manufacture of a coaxial tobacco or filter rod and a coaxial tobacco or filter rod obtained by this method
EP0674328A1 (de) * 1994-03-23 1995-09-27 Universities Research Association, Inc. Anornung des Wickelkopfes zum direktem Wicklen
EP0923783B1 (de) * 1996-09-04 2004-02-25 Schneider Electric Industries SAS Elektrische Spule bestehend aus Wicklungen für Trockentransformatoren

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8400842A (nl) * 1984-03-16 1985-10-16 Philips Nv Draadterugneeminrichting voor een wikkelinrichting.
AU575476B2 (en) * 1986-04-30 1988-07-28 Daiwa Can Company Limited Inserting and feeding wire into and from container
IT1398014B1 (it) * 2010-02-05 2013-02-04 Falloppi Dispositivo per sagomatura a spire circolari concentriche con diametro variabile di materiali malleabili
JP5199447B1 (ja) * 2011-12-09 2013-05-15 ファナック株式会社 回転軸を備えたワイヤ放電加工機
EP3242301B1 (de) * 2016-05-05 2018-04-25 Premo, S.L. Vorrichtung und verfahren zum aufwickeln eines flexiblen langgestreckten induktors
CN213935944U (zh) 2021-05-31 2021-08-10 海鸿电气有限公司 一种绕线模具
IT202100027428A1 (it) * 2021-10-26 2023-04-26 Gd Spa Metodo e macchina per realizzare una bobina attorno ad un componente di un articolo
US20250128907A1 (en) * 2023-10-23 2025-04-24 Cerro Wire Llc Wire Barrel Packing System and Method of Use

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR26143E (fr) * 1922-03-25 1923-07-30 Thomson Houston Comp Francaise Machines pour fabriquer les enroulements
US2929577A (en) * 1958-07-09 1960-03-22 Western Electric Co Apparatus for coiling strands
DE1150450B (de) * 1961-01-13 1963-06-20 Lehner Fernsprech Signal Vorrichtung zum Wickeln von Tauchspulen mit kleiner Drahtstaerke
US3295785A (en) * 1963-11-22 1967-01-03 Forges Ateliers Const Electr Apparatus for coiling cable in a tank
FR1575213A (de) * 1967-07-27 1969-07-18
FR1584089A (de) * 1967-08-03 1969-12-12
DE2352679A1 (de) * 1973-10-20 1975-04-30 Schloemann Siemag Ag Drehkorbhaspel fuer grosse bunde

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR549327A (fr) * 1921-03-26 1923-02-07 Thomson Houston Comp Francaise Machines pour fabriquer les enroulements
US2857116A (en) * 1955-03-01 1958-10-21 Anaconda Wire & Cable Co Packaging of wire
GB838424A (en) * 1957-04-25 1960-06-22 Connollys Blackley Ltd Improvements in the packaging of wire
US3337154A (en) * 1966-02-16 1967-08-22 Westinghouse Electric Corp Motor control system for coiling apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR26143E (fr) * 1922-03-25 1923-07-30 Thomson Houston Comp Francaise Machines pour fabriquer les enroulements
US2929577A (en) * 1958-07-09 1960-03-22 Western Electric Co Apparatus for coiling strands
DE1150450B (de) * 1961-01-13 1963-06-20 Lehner Fernsprech Signal Vorrichtung zum Wickeln von Tauchspulen mit kleiner Drahtstaerke
US3295785A (en) * 1963-11-22 1967-01-03 Forges Ateliers Const Electr Apparatus for coiling cable in a tank
FR1575213A (de) * 1967-07-27 1969-07-18
FR1584089A (de) * 1967-08-03 1969-12-12
DE2352679A1 (de) * 1973-10-20 1975-04-30 Schloemann Siemag Ag Drehkorbhaspel fuer grosse bunde

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0448977A3 (en) * 1990-03-26 1993-01-13 B.A.T. Cigaretten-Fabriken Gmbh Method and device for the manufacture of a coaxial tobacco or filter rod and a coaxial tobacco or filter rod obtained by this method
EP0674328A1 (de) * 1994-03-23 1995-09-27 Universities Research Association, Inc. Anornung des Wickelkopfes zum direktem Wicklen
US5547532A (en) * 1994-03-23 1996-08-20 Universities Research Association, Inc. Direct wind coil winding head assembly
EP0923783B1 (de) * 1996-09-04 2004-02-25 Schneider Electric Industries SAS Elektrische Spule bestehend aus Wicklungen für Trockentransformatoren

Also Published As

Publication number Publication date
ES8308444A1 (es) 1983-08-16
SG26289G (en) 1989-09-22
US4491284A (en) 1985-01-01
KR840003133A (ko) 1984-08-13
PT75919A (fr) 1982-12-01
IE822844L (en) 1983-06-01
JPS58161310A (ja) 1983-09-24
DK159223C (da) 1991-02-25
KR880001084B1 (ko) 1988-06-22
EP0081446B1 (de) 1986-06-11
DE3271688D1 (en) 1986-07-17
CA1206733A (fr) 1986-07-02
PT75919B (fr) 1985-01-25
DK531382A (da) 1983-06-02
FR2517462A1 (fr) 1983-06-03
JPH0430170B2 (de) 1992-05-21
ES517797A0 (es) 1983-08-16
IE53970B1 (en) 1989-04-26
DK159223B (da) 1990-09-17
FR2517462B1 (fr) 1986-10-03
ATE20331T1 (de) 1986-06-15

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