EP0190929A2 - Vorrichtung und Verfahren zur Herstellung einer Niederspannungswicklung für einen Ringkerntransformator - Google Patents

Vorrichtung und Verfahren zur Herstellung einer Niederspannungswicklung für einen Ringkerntransformator Download PDF

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Publication number
EP0190929A2
EP0190929A2 EP86300783A EP86300783A EP0190929A2 EP 0190929 A2 EP0190929 A2 EP 0190929A2 EP 86300783 A EP86300783 A EP 86300783A EP 86300783 A EP86300783 A EP 86300783A EP 0190929 A2 EP0190929 A2 EP 0190929A2
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EP
European Patent Office
Prior art keywords
winding
winding mandrel
mandrel
wire
axis
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Application number
EP86300783A
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English (en)
French (fr)
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EP0190929A3 (de
Inventor
Randall L. Schlake
Clark J. Hamkins
James D. Richerson
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Kuhlman Corp
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Kuhlman Corp
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Publication of EP0190929A2 publication Critical patent/EP0190929A2/de
Publication of EP0190929A3 publication Critical patent/EP0190929A3/de
Withdrawn legal-status Critical Current

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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
    • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
    • 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

Definitions

  • the present invention constitutes additional inventions over the inventions disclosed in co-pending application.
  • Serial No. 662,330 filed October 17, 1984, entitled “Apparatus and Method for Winding a Magnetic Core for a Toroidal Transformer.”
  • the entirety of the disclosures of said co-pending applications are incorporated herein by reference thereto.
  • this application and the aforementioned co-pending applications are directed to new toroidal transformer designs, and apparatus and methods for manufacturing same, which improve the efficiency of power conversion by a transformer. While the present invention provides similar improvements in efficiency as described in the foregoing co-pending applications, it differs from the inventions of the co-pending applications in a number of significant respects. Particularly, the present invention provides a new multifilar low voltage winding employing round, film insulated, wire conductor and an apparatus and method for fabricating a multifilar low voltage winding for a toroidal transformer.
  • the method and apparatus use a wire storage magazine and a wire winding shuttle which rotate about an arcuate or toroidal winding mandrel to wind a multifilar low voltage winding on the winding mandrel having a greater radial depth of turns at the radially inward leg of the winding than at the radially outward leg of the winding.
  • While winding machines which wind a toroidal winding using a rotatable winding shuttle and storage magazine passing through the window of a toroidal core are well known in the prior art, as exemplified by the aforementioned Universal Machines, the present invention constitutes a material modification of such Universal Machines and departs from these machines in several important respects.
  • the machine and method of the present invention is adapted to wind a toroidally shaped multifilar winding so that the multifilar conductors of the winding are layed side-by-side in a single layer at the radially outward leg of the toroid and are layed in multiple stacked layers at the radially inward leg of the toroid.
  • the multifilar winding can be wound with a group of insulated conductors in a single pass over the winding mandrel, or wound one insulated conductor at a time using multiple passes over the winding mandrel, or wound using multiple passes over the winding mandrel with some intermediate number of insulated conductors being wound during each pass.
  • an excess length of wire is provided to serve as a lead.
  • the excess length of wire which forms the lead can be secured on a hook, peg or the like attached to the winding mandrel.
  • each conductor of the completed multifilar winding assumes the same voltage.
  • the low voltage windings are wound upon an arcuate, semitoroidal core insulation tube which is supported and positioned by an expandable mandrel.
  • an insulation barrier is installed about the first winding section, preferably by wrapping an insulating paper about the first winding section.
  • a second section of low voltage winding of similar configuration is wound over the first winding section and the insulation barrier. Subsequent to completion or during the winding of the low voltage windings, the conductor turns are bonded in place.
  • one section of the low voltage primary winding is connected to one-half of a 120/240 volt output circuit and the other section of low voltage winding is connected to the other half of the 120/240 volt output circuit.
  • two arcuate low voltage winding assemblies are used in each transformer with the arcs concentrically arranged to form approximately 330° of a toroidal passage through the low voltage windings.
  • a high voltage winding is assembled onto the low voltage windings and a strip of core material is wound into the arcuate elongated passage within the low voltage windings to form a toroidal transformer having both continuous windings and a continuous core as described in the aforementioned co-pending applications.
  • a first preferred embodiment of a low voltage winding machine 10 of the present invention is illustrated.
  • the winding machine 10 is a model "BW" toroidal winding machine manufactured by Universal Manufacturing Co., Inc. of Irvington, New Jersey, designed along the lines of the machines disclosed in the aforementioned Fahrbach patents.
  • the winding machine 10 includes a winding head assembly 12 and a rotary table assembly 14.
  • the winding head assembly 12 includes a winding head frame 16 which is generally crescent-shaped as shown to provide a jaw having a circular central opening for containing an annular wire storage magazine 18 and an annular shuttle 20.
  • the wire storage magazine 18 and the shuttle 20 are mounted for independent rotation with respect to the winding head frame 16 by various rotatable mounting wheels 22 and 24, respectively, which are distributed circumferentially about the circular jaw of the winding head frame 16.
  • the wire storage magazine 18 is connected by suitable gears to an air motor which rotatably drives the wire storage magazine 18 about a horizontal winding axis.
  • the shuttle 20 is connected by suitable gears to a numerically controlled electric drive motor which rotatably drives the winding shuttle 20 about the horizontal winding axis independently of the wire storage magazine 18.
  • the wire storage magazine 18 has an annular U-shaped storage channel 27 (shown in Fig. 3) and can be rotatably driven to wind up a wire 25 from an external bulk supply so that a suitable length of wire may be stored in the storage channel 27 for later forming into a low voltage winding 48 by unwinding the wire 25 from the wire storage magazine 18 and winding the wire 25 onto an arcuate winding mandrel 38.
  • the air motor driving the wire storage magazine 18 is also adapted to provide a braking force which resists the rotation of the wire storage magazine 18 during unwinding of the wire 25 from the wire storage magazine 18.
  • the shuttle 20 is rotatably driven through a circumferential ring gear 21 to unwind wire 25 stored on the wire storage magazine 18 and to wind such wire about the winding mandrel 38.
  • the shuttle 20 is provided with an eyelet 26 (shown in Fig. 3) for lifting wire 25 from the wire storage magazine 18 and a pair of guide wheels 28a and 28b rotatable about axes parallel to the winding axis for directing the wire 25 onto the binding mandrel 38.
  • Guide wheel 28a is used to guide the wire 25 when the shuttle 20 rotates counterclockwise (when viewed from the right side of the machine) as shown in Fig. 2 while the guide wheel 28b is used to guide the wire 25 when the shuttle 20 rotates clockwise as shown in phantom in Fig. 6.
  • the rotary table assembly 14 includes a mandrel support assembly 29, and a mandrel clamp 30 having upper and lower jaws 32 and 34, respectively, for gripping a mounting portion 36 of the winding mandrel 38.
  • the winding mandrel 38 has an arcuate or semitoroidal configuration with the center of the arc or toroid located at the rotational axis 40 of the rotary table assembly 14 such that rotation of the rotary table assembly 14 causes rotation of the arcuate winding mandrel 38 about its axis.
  • the rotatable table assembly 14 is connected to suitable drive gears and a numerically-controlled motor to provide precise orientation through reciprocal rotation of the winding mandrel 38 under control of an electronic controller 44 during rotation of the shuttle 20 and wire storage magazine 18 to wind conductors onto the winding mandrel 38 in a pre-defined pattern.
  • the various commands to the electronic controller can be displayed on a suitable CRT 45.
  • the controller 44 and CRT 45 are commercially available from Universal Manufacturing Co., Inc.
  • wire 25 from a bulk source is wound onto the wire storage magazine 18 in a clockwise direction, as viewed in Fig. 2, until a predetermined length of wire 25 suitable for the winding operations to follow is stored in the wire storage magazine 18. Thereafter, the wire 25 from the bulk source is cut.
  • the cut end of wire 25 which has been accumulated on the wire storage magazine 18 is secured to a hook or peg 64 fixedly mounted to one end of the winding mandrel 38 to provide a start lead prior to winding.
  • wire 25 is removed from the wire storage magazine 18 by the- rotation of the shuttle 20 and is wound onto the winding mandrel 38 through guide wheel 28a or 28b, depending on the direction of rotation, as the shuttle 20 rotates.
  • Eyelet 26 serves to lift the wire 25 from the storage channel 27 of the wire storage magazine 18 and to guide the wire 25 to the guide wheels 28a and 28b. Since the effective winding diameter of the winding mandrel 38 is substantially less than the diameter of the wire storage magazine 18, the wire storage magazine 18 is allowed to rotate independently of the shuttle 20 to accommodate the speed differential caused by the difference in such diameters.
  • the winding mandrel 38 is rotated about its axis of revolution 40 to lay the wire 25 on the winding mandrel 38 in a predetermined pattern.
  • FIGs. 4 and 5 the winding pattern of a winding pass over the winding mandrel 38 is illustrated. Note that the winding begins at the upper portion of the winding mandrel 38 as shown in Fig. 4 and progresses as the winding mandrel 38 rotates in an overall counterclockwise direction about axis 40. During such counterclockwise rotation of the winding mandrel 38 about axis 40, the shuttle 20 and wire storage magazine 18 rotate counterclockwise (relative to the view of Fig. 2) about the horizontal winding axis to wind the wire 25 onto the winding mandrel 38.
  • the winding mandrel 38 also accomplishes certain reciprocal "jogging" motions, i.e., back and forth rotations about axis 40, under the control of the controller 44 to lay the wire in a predetermined pattern, an example of which is illustrated in Fig. 5.
  • the overall sum of the clockwise and counterclockwise reciprocal rotations of the winding mandrel 38 about axis 40 is a counterclockwise rotation from the view of Fig. 4 to the view of Fig. 5.
  • the preferred reciprocal jogging motion of the winding mandrel 38 facilitates the fabrication on a non-spiral winding.
  • Figs. 8A-8E the winding sequence for five conductors of a five-strand multifilar low voltage winding 48 is illustrated. Note that the single strand is wound successively in each of five passes to provide the five-strand multifilar winding. Prior to winding, the core insulation tube 46 is placed on the winding mandrel 38 as described in detail hereinafter.
  • a single wire 25 is first secured to post 64 and a turn is wound on end plate 114 (Fig. 12) of the winding mandrel 38 to provide an excess length of conductor which serves as a start lead of the coil winding.
  • the wire 25 is then led onto the core insulation tube 46 and the first pass is wound by counterclockwise rotation of the shuttle 20.
  • the solid transverse lines in Fig. 8A represent the turns wound across the top of the winding mandrel 38, while the dashed transverse lines represent the turns wound across the bottom of the winding mandrel 38.
  • each cross-section of the wire 25 at the radially inward and radially outward legs is designated by a small circle containing a darkened half sector.
  • a second winding pass is reverse wound (i.e., with the shuttle 20 rotating clockwise) in spaced groups of turns, as schematically illustrated in Fig. 8B by solid and dashed transverse lines and identified by small circles with a single horizontal line.
  • an excess length of conductor is extended outwardly from the winding mandrel 38 to provide a start lead for the winding and is looped about the first post 64.
  • the turns of the first two winding passes are inter-leaved in a single layer against the core insulation tube 46.
  • a third winding pass is illustrated schematically, again by solid and dashed transverse lines.
  • the wire 25 is wound with the shuttle 20 turning counterclockwise and is designated by a small circle containing two crossed lines.
  • each turn is approximately evenly spaced.
  • the turns lay against the core insulation tube 46.
  • the turns lay in part in the first layer against the core insulation tube 46 and lay in part in a second, radially inward layer, approximately in equal proportion.
  • two and a half windings are required to complete the inner layer of the radially inward leg of the toroidal winding.
  • an excess length of wire 25 is again extended outwardly and looped around the second post 66 to provide a finish lead for the winding.
  • Fig. 8D the winding of a fourth pass is schematically illustrated, which is wound with the shuttle 20 turning clockwise.
  • the path of the fourth winding is illustrated by the solid and dashed transverse lines and by small circles containing two parallel lines.
  • the turns lie in the first layer against the core insulation tube 46, while at the radially inward leg of the toroid, the turns lie in the second layer.
  • the pass is completed by extending the conductor outwardly and looping around post 64 to form a start lead.
  • a final winding pass that completes a low voltage winding section is schematically illustrated in Fig. 8E.
  • the turns are again wound with the shuttle 20 turning counterclockwise with each turn filling in gaps left by the previous winding passes.
  • the path of the fifth winding pass is illustrated by solid and dashed transverse lines and by small darkened circles.
  • the final pass substantially fills the available space in the first layer of the radially outward leg and substantially fills the space in the second layer of the radially inward leg.
  • a finish lead is extended outwardly and looped around the post 66. Thereafter, all winding pass leads at post 64 are joined in common and all winding pass leads at post 66 are joined in common to form the multifilar winding.
  • the winding process can be performed in fewer passes than the number of multifilar conductors by winding more than one conductor at a time.
  • two or more wires are wound around the winding mandrel 38 by rotating the shuttle 20 in one direction about the winding axis and by rotating the winding mandrel about the mandrel axis 40 according to its reciprocal jogging motion, with each turn of the two or more wires being placed side by side at the radially inward surface of the winding mandrel 38 and being circumferentially spaced apart from adjacent turns at the radially outward surface of the winding mandrel 38.
  • the two or more wires are wound around the winding mandrel 38 by rotating the shuttle 20 in the other direction about the winding axis and rotating the winding mandrel 38 about the mandrel axis 40 in a reverse reciprocal jogging motion, with each turn of the two or more wires of the second pass being stacked upon the turns of the first pass at the radially inward surface of the winding mandrel 38 and being placed between adjacent turns of the first pass at the radially outward surface of the winding mandrel 38.
  • the windings of the low voltage winding 48 are preferably not spiral. Rather, the turns have axially oriented (with respect to the axis 40) segments at the radially inward and outward legs of the winding with generally radial or non-radial transitions on the top and bottom legs of the winding.
  • the positions of the turns at the radially inward and outward legs are defined by the winding pattern shown in Figs. 8A-8E.
  • the positions of the turns across the top and bottom legs are defined by the positions of the connecting inward and outward legs. This positioning is accomplished using jog routines illustrated in Figs. 6, 7A and 7B.
  • the shuttle 20 rotates in a stationary vertical plane, which passes through the mandrel axis 40, while the winding mandrel 38 oscillates or jogs clockwise and counterclockwise about its axis 40 to position the wire 25 on the winding mandrel 38.
  • the four jog positions, A through D, are illustrated in Fig. 6 and are provided in the program commercially available with the Universal machine, while the results of the jogs are exemplified in Figs. 7A and 7B.
  • the jog positions A-D remain the same for both clockwise and counterclockwise rotation of the shuttle 20, but can be modified to provide four jog positions for each winding direction with the correlative jog positions for each winding direction somewhat offset with respect to the other.
  • the winding mandrel 38 is jogged clockwise and counterclockwise about the axis 40 as illustrated in Figs. 7A and 7B.
  • the winding mandrel 38 rotates clockwise or counterclockwise about axis 40 in jog routine A-D after the wire has contacted one edge of the winding mandrel 38 and prior to the wire 25 contacting the next edge of the winding mandrel 38, e.g.
  • edges 39A and 39B for jog routine D to project the wire 25 in the non-spiral direction as shown in Fig. 7A.
  • the wire 25 contacts the outward lower edge 39B of the winding mandrel 38 to position the wire 25 across the bottom surface of the winding mandrel 38, which ends jog routine D.
  • the routines of clockwise and counterclockwise jogs continue as the shuttle 20 rotates around the winding mandrel 38 to wind the wire 25 onto the winding mandrel 38 so as to provide axially oriented inside and outside legs and connecting top-and bottom legs in the pattern illustrated in Figs. 8A-8E .
  • the position of the wire 25 as it is wound over each edge of the winding mandrel 38 is determined by the position of a previously wound edge of the winding mandrel 38 relative to the guide wheels 28 of the shuttle 20.
  • the wire 25 forms a straight line between the previously wound edge of the winding mandrel 38 and the guide wheels 28.
  • an adjacent edge of the winding mandrel 38 contacts the wire 25 at an intermediate point along the straight line between the previously wound edge and the guide wheels 28, thus defining the position of the wire 25 between those two edges.
  • each jog routine is to rotate the winding mandrel 38 to a position to correctly place the wire 25 at each edge of the winding mandrel 38, with the edge placements determined by the winding sequence illustrated in Figs. 8A-8E.
  • a molded paperboard core insulation tube 46 is seen which is mounted on the winding mandrel 38 during winding of the low voltage winding 48.
  • the low voltage winding 48 includes an inner winding group or section 50 and an outer winding group or section 52 (the latter shown only in Fig. 10) which are separated by an insulation barrier 54.
  • the core insulation tube 46 is configured to surround the wound magnetic core of the transformer, and accordingly, is arcuate in cross-section and is adapted to be concentrically arranged with a second such tube to form a toroidal core passage of approximately 330°.
  • Each end of the core insulation tube 46 carries a pair of end blocks 56 and 58, with block 58 being positioned on the radially outward leg of the core insulation tube 46, and with block 56 being positioned on the radially inward leg of the core insulation tube 46.
  • the radially outward blocks 58 have slanted slots 59 and 61 as illustrated in Fig. 11 to position and retain the leads 60 of the inner winding section 50 and the leads 62 of the outer winding section 52.
  • the start leads 60 of the inner winding section 50 extend from the start end 38A of the winding mandrel 38 and are secured by the upper slot 61 in end block 58.
  • the finish leads 60 of inner winding section 50 extend from the finish end 38B of the winding mandrel 38 and are secured in the lower slot 59 in end block 58.
  • leads 62 of the outer winding section 52 are secured by starting and finishing the winding with leads placed in the remaining alternate slots 59 and 61, respectively. Placement of the low voltage winding leads in the above manner results in a reversible semitoroidal winding in which the leads emerge from the same relative locations and the proper winding direction is maintained regardless of the orientation in which the coil is installed in the completed transformer.
  • the results of the winding of the inner section 50 of the multifilar low voltage winding 48 are illustrated.
  • the inner section 50 has a single layer of conductors on the radially outward leg of the toroid and a double layer of conductors on the radially inward leg of the toroid.
  • the insulation barrier 54 is seen to comprise insulation material, preferably a crepe paper strip, wrapped about the inner winding section 50 of the low voltage winding 48. Note that adjacent wraps of the crepe paper substantially overlap to provide at least a single layer of crepe paper over the radially outward leg of the inner winding section 50.
  • the outer low voltage winding section 52 is wound as illustrated in Fig. 10. Note that the outer winding section 52 is wound in the same fashion as the inner winding section 50 with a single layer of conductors at the radially outward leg of the toroid and a double layer of conductors at the radially inward leg of the toroid. Either subsequent to completion or during the winding of the low voltage winding 48, the conductor turns are bonded into place preferably by use of an adhesive, dry to the touch, B-stage thermosetting conductor coating which is activated by a baking process following winding or, alternatively, by wet application of a thermosetting adhesive during the winding process.
  • the winding mandrel 38 is illustrated in an exploded perspective view.
  • the winding mandrel 38 includes upper and lower arcuate support plates 70 and 72, respectively, which are joined by three expandable cross supports 74, 76, and 78.
  • Each cross support 74, 76, and 78 includes an expandable joint 80 which, for example, can include a pair of conical washers 82 and 84 residing on a compression bolt 86 which is threaded into a compression plate 88, a? shown in Fig. 14.
  • the compression plate 88 is mounted for movement along guide bolts 89.
  • the conical washers 82 and 84 bear inwardly against conical cam surfaces 90 and 92 on upper and lower support members 94 and 96, respectively, of the cross support. Rotation of the compression bolt 86 to draw the conical washers 82 and 84 together acts to bias the support members 94 and 96 apart thereby spreading apart the upper and lower arcuate support plates 70 and 72.
  • Cross support 74 is provided with an opening 97 (Fig. 12) to permit access of a tool 99 to the head of the compression bolt 86.
  • the tool 99 mates with the heads of each compression bolt 86 of the three expandable cross supports 74, 76, and 78 to rotate the bolt 86 for expanding and contracting the mandrel 38.
  • the upper and lower arcuate support plates 70 and 72 can be brought to forcibly bear against the inner upper and lower surfaces and corners of the core insulation tube 46 to hold the core insulation tube 46 firmly in relation to the winding mandrel 38 and to prevent collapse or deformation of the core insulation tube 46 during winding of the low voltage winding 48.
  • winding of the low voltage winding 48 occurs under a significant winding tension which tends to cause the molded paperboard structure of the core insulation tube 46 to collapse or deform prior to bonding in subsequent processes if not firmly supported.
  • insulation tubes of more substantial construction can be made at somewhat higher costs to avoid such deformation.
  • the expandable mandrel 38 provides a ready means for detachably mounting the core insulation tube 46 during winding while at the same time providing structural support. Additionally, by collapsing the support plates 70 and 72 inward, the completed low voltage winding 48 can be readily removed from the winding mandrel 38.
  • End plates 98 and 100 are secured to the ends of the expandable winding mandrel 38 to hold the insulation tube 46 in position on the winding mandrel 38.
  • End plate 100 is permanently secured to the cross support 78 and is provided with a slot 104 for access of the tool 99 to the head of compression bolt 86 as shown in Fig. 12.
  • the end plate 100 also carries a mounting stem 106 which is rigidly fixed to the mounting plate 100 and cross support 78 and is configured to mate securely with the jaws 32 and 34 of the mandrel clamp 30.
  • jaws 32 and 34 are provided with pins 108 while the mounting stem 106 is provided with corresponding recesses 110.
  • End plate 98 is adapted to be removably secured to cross support 74 to facilitate mounting and removal of the core insulation tube 46.
  • End plate 98 has a slot 112 which permits access of the tool 99 to the head of the bolt 86 for expanding and contracting cross support 74.
  • End plate 98 also carries a pin mounting block 114 which is normally removed along with the end plate 98.
  • a threaded fastener 116 is used to removably secure the pin mounting block 114 and the end plate 98 to the cross support 74.
  • the plate 98 with its attached winding pin mounting block 114 is removable upon removal of threaded fastener 116 whereby the insulation barrier 46 may be inserted onto the winding mandrel 38, and after winding, likewise removed.
  • the pin mounting block 114 carries the winding pegs 64 while the mounting stem 106 carries the winding pegs 66.
  • FIG. 15 an alternative winding mandrel 120 is illustrated.
  • the winding mandrel 120 differs from the winding mandrel 38 in that it is pivotedly mounted to the mounting stem 122 using a hinge 124 whereby the portion of the winding mandrel 120 carrying the core insulation tube 46 can be rotated with respect to the mounting stem 122 to facilitate easy mounting and removal of the core insulation tube 46 before and after winding of the low voltage winding 48.
  • the hinge 124 facilitates removal of the core insulation tube 46 since the core insulation tube 46 must be removed from the winding mandrel 38 in a circular motion until it is free from the winding mandrel 38.
  • the core insulation tube 46 Due to the length of the core insulation tube 46, it does not become free of the winding mandrel 38 until it is in close proximity to the mounting stem 106 providing little clearance for insertion and removal of the core insulation tube 46.
  • the use of a hinged connection with the mounting stem 122 significantly increases the clearance for removal of the core insulation tube 46 by allowing outward hinging of the portion of mandrel 120 which carries the core insulation tube 46.
  • a second low voltage coil winding machine 130 is illustrated.
  • the low voltage coil winding machine 130 is adapted to wind a multifilar low voltage winding in a single pass.
  • multiple strands of a multifilar conductor 132 are simultaneously wound onto the storage magazine 134 from a source of multifilar conductor or from multiple separate sources of a single conductor.
  • the shuttle 136 and the storage magazine 134 are rotated counterclockwise to wind the multifilar conductor 132 on the core insulation tube 46 as illustrated in Figs. 19A-19E.
  • the multiple strand multifilar conductor 132 is lifted and unwound from the storage magazine 134 by multifilar eyelet 138.
  • the multifilar eyelet 138 has multiple guide grooves, one for each strand of the multifilar wind conductor 132.
  • the shuttle 136 is provided with a plurality of wire tensioning wheels 140-150, each having a groove about its periphery.
  • Each strand of the multifilar conductor 132 is separately wrapped around at least one of the tensioning pulleys 140-150. The remaining strands of multifilar conductor 132 ride over the tops of the other tensioning pulleys. Accordingly, each tensioning pulley 140-150 serves to tension a single strand independently of the other strands. However, more than one tensioning pulley may, in some cases, be required to adequately tension a single strand.
  • This independent tensioning of each of the strands of the multifilar conductor 132 accommodates any unevenness in the build of the strands of the multifilar conductor 132 either on the storage magazine 134 or on the core insulating tube 46 mounted on the winding mandrel 38.
  • a guide wheel 152a is utilized having a groove for each of the strands of the multifilar conductor 132.
  • the multifilar conductor 132 after traversing the guide wheel 152a is wound upon the core insulation tube 46 as the shuttle 136 and the storage magazine 134 rotate counterclockwise.
  • An adjacent guide wheel 152b also having a groove for each of the strands of the multifilar conductor 132, may be employed to wind in the clockwise direction.
  • a preferred method and pattern of laying the multifilar conductor 132 in a single pass is illustrated.
  • Multiple conductors 132 are simultaneously wound onto the winding mandrel 38 to form one layer of the low voltage winding 48 in a single pass, with the multiple conductors laying side by side in a single layer at the radially outward surface of the winding mandrel 38 and laying stacked in a double layer at the radially inward surface of the winding mandrel 38.
  • this method involves laying one or more first type turns with the multiple conductors wound around and contacting the winding mandrel 38, then winding a second type turn with the multiple conductors positioned side by side to previous first type turns at the radially outward surface of the winding mandrel 38 and stacked upon portions of one or more first type turns at the radially inward surface of the winding mandrel 38, then alternately winding the first and second type turns until the set of windings is completed.
  • the first step in the method of winding the multifilar conductor 132 in a single pass involves winding a few first type turns with all of the multiple conductors 132 laying side by side against the core insulation tube 46 on the winding mandrel 38.
  • the multiple conductors 132 illustrated as comprising five conductors, are preferably wound onto the winding mandrel 38 in the same manner as described above, namely, by rotating the shuttle 136 in the counterclockwise direction (as viewed in Fig.
  • a second type turn is wound with the multiple conductors being placed by the rotating shuttle 136 stacked upon portions of one or more first type turns at the radially inward surface of the winding mandrel 38 and side by side to the previously wound first type turns at the radially outward surface of the winding mandrel 38. It is preferable to wind at least two of the first type turns at the inward surface of the winding mandrel 38 prior to winding a second type turn thereupon to present a broad inner layer for the second type turn to stack upon.
  • each first type turn is placed side by side to a previously wound second type turn at the radially outward surface of the winding mandrel 38, and is placed side by side to a previously wound first type turn at the radially inward surface of the winding mandrel 38.
  • Each second type turn is stacked upon portions of one or more previously wound first type turns at the radially inward surface of the winding mandrel 38 and is placed side by side to a previously wound first type turn at the radially outward surface of the winding mandrel 38.
  • the method of winding multifilar conductors in a single pass is illustrated by an example wound in the counterclockwise direction (as viewed from Fig. 16), the method can also be practiced in the clockwise winding direction by utilizing the guide wheel 152b on the shuttle 136 for conductor guidance and placement.
  • the example presented in Figs. 19A-19E is shown with the winding operation commencing at the inward surface of the winding mandrel 38, this method can be practiced as well by commencing the winding operation at the outward surface of the winding mandrel 38.
  • the conductors 132 at the radially inward and radially outward surfaces need not be oriented axially and could be spirally oriented.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coil Winding Methods And Apparatuses (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Tyre Moulding (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP86300783A 1985-02-06 1986-02-05 Vorrichtung und Verfahren zur Herstellung einer Niederspannungswicklung für einen Ringkerntransformator Withdrawn EP0190929A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69898185A 1985-02-06 1985-02-06
US698981 1985-02-06

Publications (2)

Publication Number Publication Date
EP0190929A2 true EP0190929A2 (de) 1986-08-13
EP0190929A3 EP0190929A3 (de) 1987-07-01

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EP86300783A Withdrawn EP0190929A3 (de) 1985-02-06 1986-02-05 Vorrichtung und Verfahren zur Herstellung einer Niederspannungswicklung für einen Ringkerntransformator

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EP (1) EP0190929A3 (de)
JP (1) JPS61234019A (de)
KR (1) KR860006814A (de)
CN (1) CN86100947A (de)
AU (1) AU5300086A (de)
BR (1) BR8600465A (de)
CA (1) CA1289736C (de)
DK (1) DK55186A (de)
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Cited By (3)

* Cited by examiner, † Cited by third party
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CN112639488A (zh) * 2018-07-20 2021-04-09 西门子能源全球有限公司 具有盘绕的导线股的装置及其制造方法
CN115229451A (zh) * 2022-09-19 2022-10-25 上海电气核电集团有限公司 一种沉船打捞弧形梁加工方法
CN116230387A (zh) * 2023-01-04 2023-06-06 深圳市星特科技有限公司 一种高效型磁环绕线机

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4699184A (en) * 1986-05-15 1987-10-13 Kuhlman Corporation Apparatus and method for fabricating a high voltage winding for a toroidal transformer
JPH01278710A (ja) * 1988-04-30 1989-11-09 Kijima:Kk リングコアに対する捲線方法およびその装置
JPH02151009A (ja) * 1988-12-01 1990-06-11 Yamabishi Denki Kk トロイダル型コイルの巻線方法及び巻線機
CN101266880A (zh) 2008-01-10 2008-09-17 迪斯曼戴克 全自动环形绕线机
CN101599362B (zh) * 2009-04-08 2012-02-08 温州市南方机械制造有限公司 环形绕线机的排线定位机构
JP2014056861A (ja) * 2012-09-11 2014-03-27 Sht Co Ltd コイル装置
FR3064991B1 (fr) * 2017-04-06 2019-08-16 Schneider Electric Industries Sas Tete de bobinage pour une machine de bobinage toroidal, machine de bobinage toroidal comprenant une telle tete de bobinage et procede
CN107170579B (zh) * 2017-06-26 2024-08-06 深圳市顺敬机械设备有限公司 一种齿条式环绕机构的环绕方法
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CN111145963B (zh) * 2020-01-06 2021-04-09 长春理工大学 线束绑扎机
CN112599350B (zh) * 2020-11-30 2022-04-19 保定天威集团特变电气有限公司 导线排布方法、三螺旋线圈绕制方法及变压器
CN114629314B (zh) * 2022-01-26 2024-06-21 中国船舶重工集团公司第七0七研究所 自动绕线机控制系统及其控制方法
CN114629313B (zh) * 2022-01-26 2024-06-21 中国船舶重工集团公司第七0七研究所 一种适用单线、多极、双向缠绕、双向排线的自动绕线机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383059A (en) * 1965-03-22 1968-05-14 Universal Mfg Co Toroidal coil winding machine
US3459385A (en) * 1965-10-23 1969-08-05 Universal Mfg Co Toroidal coil winding machine
US4269366A (en) * 1979-04-10 1981-05-26 The United States Of America As Represented By The United States Department Of Energy Shuttleless toroid winder
US4424939A (en) * 1980-04-22 1984-01-10 Hitachi, Ltd. Apparatus for winding wire around toroidal core
US4467972A (en) * 1981-06-29 1984-08-28 Siemens Aktiengesellschaft Method of winding closed cores, especially ring cores for electrical coils, and device for performing the method
US4553705A (en) * 1982-06-18 1985-11-19 Matsushita Electric Industrial Co., Ltd. Toroidal core winding method and apparatus
EP0178851A2 (de) * 1984-10-17 1986-04-23 Kuhlman Corporation Ringkerntransformator, Vorrichtungen und Verfahren zum Herstellen von Ringkerntransformatoren
EP0083567B1 (de) * 1982-01-06 1988-06-15 Kuhlman Corporation Elektrischer Ringkerntransformator und Verfahren zur Herstellung desselben

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383059A (en) * 1965-03-22 1968-05-14 Universal Mfg Co Toroidal coil winding machine
US3459385A (en) * 1965-10-23 1969-08-05 Universal Mfg Co Toroidal coil winding machine
US4269366A (en) * 1979-04-10 1981-05-26 The United States Of America As Represented By The United States Department Of Energy Shuttleless toroid winder
US4424939A (en) * 1980-04-22 1984-01-10 Hitachi, Ltd. Apparatus for winding wire around toroidal core
US4467972A (en) * 1981-06-29 1984-08-28 Siemens Aktiengesellschaft Method of winding closed cores, especially ring cores for electrical coils, and device for performing the method
EP0083567B1 (de) * 1982-01-06 1988-06-15 Kuhlman Corporation Elektrischer Ringkerntransformator und Verfahren zur Herstellung desselben
US4553705A (en) * 1982-06-18 1985-11-19 Matsushita Electric Industrial Co., Ltd. Toroidal core winding method and apparatus
EP0178851A2 (de) * 1984-10-17 1986-04-23 Kuhlman Corporation Ringkerntransformator, Vorrichtungen und Verfahren zum Herstellen von Ringkerntransformatoren

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112639488A (zh) * 2018-07-20 2021-04-09 西门子能源全球有限公司 具有盘绕的导线股的装置及其制造方法
CN115229451A (zh) * 2022-09-19 2022-10-25 上海电气核电集团有限公司 一种沉船打捞弧形梁加工方法
CN116230387A (zh) * 2023-01-04 2023-06-06 深圳市星特科技有限公司 一种高效型磁环绕线机
CN116230387B (zh) * 2023-01-04 2024-02-27 深圳市星特科技有限公司 一种高效型磁环绕线机

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CA1289736C (en) 1991-10-01
DK55186D0 (da) 1986-02-05
JPS61234019A (ja) 1986-10-18
AU5300086A (en) 1986-08-14
EP0190929A3 (de) 1987-07-01
BR8600465A (pt) 1986-10-21
KR860006814A (ko) 1986-09-15
MX161871A (es) 1991-02-07
DK55186A (da) 1986-08-07
CN86100947A (zh) 1986-11-05

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