WO2016174542A1 - Methods and apparatuses for forming woven undulated coil assemblies - Google Patents

Methods and apparatuses for forming woven undulated coil assemblies Download PDF

Info

Publication number
WO2016174542A1
WO2016174542A1 PCT/IB2016/052200 IB2016052200W WO2016174542A1 WO 2016174542 A1 WO2016174542 A1 WO 2016174542A1 IB 2016052200 W IB2016052200 W IB 2016052200W WO 2016174542 A1 WO2016174542 A1 WO 2016174542A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductors
holding device
coil assembly
feeding direction
linear portions
Prior art date
Application number
PCT/IB2016/052200
Other languages
French (fr)
Inventor
Massimo Ponzio
Rubino Corbinelli
Original Assignee
Atop S.P.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atop S.P.A. filed Critical Atop S.P.A.
Priority to EP16726947.1A priority Critical patent/EP3289672B1/en
Priority to RS20190882A priority patent/RS59058B1/en
Priority to PL16726947T priority patent/PL3289672T3/en
Priority to US15/570,735 priority patent/US10749418B2/en
Priority to KR1020177034722A priority patent/KR102619070B1/en
Priority to CN201680024915.3A priority patent/CN107534367B/en
Priority to SI201630317T priority patent/SI3289672T1/en
Priority to ES16726947T priority patent/ES2741628T3/en
Publication of WO2016174542A1 publication Critical patent/WO2016174542A1/en
Priority to US16/992,998 priority patent/US11336160B2/en
Priority to US17/745,764 priority patent/US11658553B2/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0435—Wound windings
    • H02K15/0478—Wave windings, undulated windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/02—Winding-up or coiling
    • B21C47/10—Winding-up or coiling by means of a moving guide
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device

Definitions

  • the present invention relates to a method and apparatus for forming coil assemblies of a known type, like woven undulated coil assemblies.
  • an undulated coil has adjacent linear portions extending parallel to each other, and a plurality of turn portions for connecting the ends of adjacent linear portions to each other.
  • the linear portions are inserted in slots of a stator core, whilst the turn portions protrude from respective end sides of the stator core.
  • the section of the conductor from which the coil is formed may be circular, square or rectangular.
  • the size of the section of the conductor is usually comparable to the width of the section of the slot of the stator core.
  • the conductors present in a slot are normally positioned one adjacent to another in a radial direction of the stator core, i.e. along an extension, which extends from a slot opening to the bottom of the same slot.
  • a coil formed from one conductor having the undulated configuration will be referred to as "a coil”, whilst a number of coils having the aforementioned configuration, and which are woven together, will be referred to as a coil assembly.
  • the linear portions of one conductor are alternatively positioned above and below the linear portions of another conductor. This overlapping of a conductor is repeated at a pitch distance along the coil assembly and for a certain number of undulations.
  • the turn portions joining these linear portions are positioned to be partially above and partially below turn portions of other coils.
  • Stator cores wound according to these principles can be used in dynamoelectric machines; in particular as components of traction motors and energy generators of vehicles .
  • the woven coil assembly can be first produced as a flat coil assembly, i.e. a planar coil assembly. Successively, the coil assembly can be transformed into a cylindrical form to insert the linear portions in the slots of the core, or the linear portions can be inserted directly into the slots of the core from the planar configurations. The turn portions protrude from the ends of the core after the linear portions have been inserted in the slots.
  • the coil assembly thickness can be reduced by applying compression on the flat coil assembly.
  • the linear portions and turn portions need to be positioned with high precision in view of the low allowable tolerances that exist during the successive insertion operations in the core.
  • Figure 1 is a schematic representation of portions of undulated coils
  • Figure 2 is a schematic planar representation of a portion of a coil assembly formed according to the principles of the invention
  • Figure 3 is a schematic perspective view illustrating devices required for forming a coil assembly according to the invention.
  • Figure 3a is a section view as seen from directions 3a - 3a of figure 3;
  • Figure 3b is a section view as seen from directions 3b - 3b of figure 3;
  • Figure 4 is a schematic perspective view similar to the view of figure 3 illustrating devices required for forming a coil assembly according to the invention in a certain stage of functioning;
  • Figure 5 is a schematic perspective view similar to the view of figure 3 illustrating devices required for forming a coil assembly according to the invention in a further stage of functioning;
  • Figure 5a is a view as seen from directions 5a - 5a of figure 5;
  • Figure 5b is a view similar to that of figure 3b in a different stage of functioning
  • Figures 6 to 14 are schematic views of various stages of functioning according to the principles of the invention as seen from a direction 6 of figure 3;
  • Figure 15 is a view similar to figure 4, although illustrating a second embodiment of the invention.
  • Figures 16 to 20 are views similar to those figures 6 - 14, although illustrating various stages of functioning of the second embodiment of the invention.
  • Figure 1 and 2 show the constitution of a woven coil assembly 100.
  • Figure 1 shows two separate undulated coil portions CI and C2, which are used as a reference for explaining the woven coil assembly of figure 2 .
  • a coil portion CI is shown with dark shading, whilst a coil portion C2 is shown without shading.
  • each of the coil portions CI and C2 is formed of six wire conductors .
  • FIG. 1 A portion of a formed woven coil assembly 100 consisting of twelve wire conductors is shown in figure 2.
  • Coil assembly 100 has a flat configuration, which extends parallel to the plane P of the drawing of figure 2.
  • the result of figure 2 can be considered an interlacing of the coil portions CI and C2 of figure 1.
  • the distance between two adjacent superimposed linear portions is referred to as the pitch (see PT in figure 2) .
  • turns T represent the turn portions of the coil assembly as shown in figure 2 .
  • Adjacent turn portions T overlap each other with an orderly progression of succession.
  • the overlap of the turn portions is such that it causes the linear portions of any of the conductors to pass between overlapping the linear portion of another conductor in area Al, to being overlapped by another linear portion of the same conductor in an adjacent area A2, as shown in figure 2.
  • the twelve conductors will have linear portions and turn portions positioned according to the alternation of overlapping described above.
  • the linear portions of a specific conductor are positioned along the coil assembly at distances of 6 times the pitch distance, i.e. half the number of conductors multiplied by the pitch distance PT . Therefore as a general law, at a distances equal to half the number of conductor multiplied by the pitch distance.
  • Area Al is adjacent to area A2 and the two areas are delimited by a separation distance SD equal to the pitch distance PT .
  • Areas Al and A2 are repeated a predetermined number of times along the coil assembly 100.
  • the conductors form leads like AL1 - AL6 respectively of coils C2, and initial leads II- 16 of coils CI, which do not overlap as shown in figure 2.
  • each of the leads II- 16 of coil CI can overlap a respective lead AL1 - AL6 of coil C2 during their insertion in the slots of the stator core.
  • the core of the stator which receives the coil assembly of figure 2, will have a number of slots proportional to the total number of linear portions that overlap. This total includes the linear portions of initial leads that overlap, as described previously.
  • a slot of the stator core will have two linear portions that overlap accommodated on another two linear portions that overlap, and also on other linear portions that overlap, depending on the number of areas like Al and A2, which have been foreseen in the coil assembly.
  • a first embodiment is shown for forming the example of a coil assembly of figure 2. More particularly, the example foresees twelve wire conductors of conductor group 12 fed through respective exits 23' of conductor supply store 23. Each conductor of the group of conductors 12 can be fed from a respective conductor supply reel (not shown) to exits 23'. Furthermore, along direction X, each of the wire conductors of group 12 passes through a respective seat of group of seats 24 of guide unit 36, as shown in figure 3. The seats of group 24 are twelve, each being aligned with a seat of conductor store exits 23. Therefore, the number of seats of group 24 is equal to the number of conductors of group 12.
  • the seats of group 24 are parallel to each other to cause conductors of group 12 to remain parallel to each other and to be separate from each other by a same pitch distance PT .
  • Feeding the conductors of group 12 in direction X can be seen as being a feeding of the conductors in direction X in a same plane P, which contains the twelve conductors.
  • Orthogonal directions to X will be the Y direction, and the Z direction, as shown in figure 3.
  • Directions X', Y' and Z' are directions opposite to directions X, Y, Z, respectively .
  • a first unit or holding device 37 is located down stream of guide unit 36 in the feeding direction X of the conductors.
  • First holding unit 37 is provided with a first plate 38, or support member, having group of seats 39 which are open towards a second plate 51, or cover member.
  • the second plate 51 covers the first plate 38 (see also figure 3a) .
  • the seats of group 39 are twelve and are aligned with those of guide unit 36. Furthermore, the seats of group 39 are parallel to each other, and have the same separation pitch PT .
  • First holding unit 37 is located so that seats of group 39 are aligned with seats of group 24 in order to achieve a travel of conductors of group 12 through the seats of guide unit 36 and first holding unit 37 without bending conductors of group 12.
  • a second device or holding unit 55 is located down stream of first holding unit 37 in the feeding direction X of the conductors.
  • Second holding unit 55 is provided with a first plate 56, or support member, having group of seats 59, which are open towards a second plate 58, or cover member which covers the first plate 56 (see also figure 3b) .
  • Seats of group 59 are parallel to each other and aligned with the same separation distance PT described in the foregoing for the seats of group 24 of guide unit 36.
  • Second holding unit 55 is located so that seats of group 59 are aligned with seats of group 39 of first holding unit 37 in order to achieve a travel of conductors of group 12 through the seats of first holding unit 37 and second holding unit 55 without bending conductors of group 12.
  • First plate 38 and second plate 51 of first holding unit 37 are assembled together to allow passage of the conductors in directions X and X' through seats of group 39 and without causing unwanted movements in transverse directions Y and Y' and Z and Z' , and also for locking the conductors in directions X and X' when required.
  • First plate 56 and second plate 58 of second holding unit 55 are assembled together to allow passage of the conductors in the feeding direction X to reach the ends of seats of group 59 without causing unwanted movements in directions Y and Y' and Z and Z' , and also for locking the conductors in directions X and X' once the conductors have reached a required position at the ends of the seats of group 59.
  • a clamp device can place the conductors on the paths and in the groups of seats described with reference to figure 3.
  • the clamp is able to hold the ends of the conductors at the pitch distance PT .
  • the clamp device moves in direction X to pull the conductors from the supply store 23.
  • a conductor is aligned with a specific seat of plate 36', plate 38 and plate 56.
  • plate 36' ' , plate 51 and plate 58 have been removed to allow the conductors to access the seats when the clamp is moved in direction Z' .
  • plate 36' ' , plate 51 and plate 58 can be relocated, as shown in figure 3.
  • Figure 3a shows the section view of first holding unit 37 having group of seats 39 of first plate 38, where in each seat a conductor of group of conductors 12 is located.
  • Second plate 51 covers the first plate 38. The underside of plate 51 can be in engagement with a predetermined pressure on the conductors to exert a clamping action when holding is required. If the conductors need to move though the seats, then the pressure can be reduced.
  • Figure 3b shows the section view of second holding unit 55 having first plate 56 with group of seats 59, where a conductor is located in each seat, as shown.
  • second plate 58 covers the first plate 56.
  • the underside of plate 58 can be in engagement with a predetermined pressure on the conductors to exert a clamping action when holding is required. If the conductors need to move though the seats, then the pressure can be reduced.
  • Second plate 58 is provided with extension 58' .
  • the width W of the extension is such that the underside 58" of the extension 58' can cover and engage half the number of conductors (six conductors in the case of the example) of group of conductors 12, at a certain stage of the forming of the coil assembly.
  • Figures 6 - 14 are planar representations parallel to plane P showing a sequence of steps for forming the woven coil assembly of figure 2 starting from the condition of figure 3.
  • FIG. 6 shows the situation of figure 3
  • FIG 7 A successive step of the coil forming solution is shown in figure 7, where second holding unit 55 has moved in directions Y of plane P to cause conductors of group 12 to become inclined between second holding unit 55 and first holding unit 37.
  • first portion IP' of conductors 12 (see figure 6) is bent.
  • the distance of the movement in direction Y is equal to six times the pitch PT .
  • guide unit 36 and first holding unit 37 can be moved in direction X to avoid excessive strain on the conductors of group 12.
  • This step of figure 7 results in the formation of the inclined portion IC1 of portion IP' of conductors of group 12 located between second holding unit 55 and first holding unit 37.
  • a successive step of the coil forming solution is shown in figure 4 and figure 8, where second holding unit 55 has moved further in directions Y of plane P, and at the same time first holding unit 37, which is holding a second portion of conductors 2P' , is moved in direction Y for the same distance. This distance is equal to six times the pitch PT .
  • the further movement in direction Y causes conductors of group 12 to become inclined between first holding unit 37 and guide unit 36, i.e. of a third portion of conductors 3P' , thereby forming second inclined portion IC2 as shown in figure 8.
  • Guide unit 36 which is positioned upstream of portion 3P' , positions a fourth portion 4P' .
  • Guide unit 36 is moved in direction X to avoid straining the conductors of group 12, when second holding unit 55 and first holding unit 37 are moved in direction Y.
  • a bending plate 80 is positioned between first holding unit 37 and second holding unit 55.
  • bending plate 80 is located proximate to second plate 51 of first holding unit 37, with bending edge 80' positioned transverse and perpendicular to feeding direction X, as shown in figures 4 and 8.
  • bending edge 80' can be in engagement with the inclined portion IC1 of conductors of group 12 located between first holding unit 37 and second holding unit 58.
  • the engagement can occur approximately at the middle of the inclined portion IC1, as shown in figures 4 and 8.
  • FIG 9 The next stage of the coil forming solution is shown in figure 9, where plate 56 of second holding unit 55 has been rotated according to arrow A around bending edge 80' .
  • Bending edge 80' is aligned with axis A' and orthogonal to the feeding direction X.
  • plates 51 and 58 Prior to the rotation, in this stage around axis A' , plates 51 and 58 are respectively removed from the first holding unit 37 and the second holding unit 55.
  • Possible solutions for rotations around bending edge 80' can be either that plate 56 is rotated itself around bending edge 80' , or that plate 56 is rotated around a middle axis R - R of second holding unit 55 (see figure 4) for rotation A, and at the same time plate 38 moves in direction X and direction Z' .
  • This second combination of motions achieves that bending edge 80' remains in engagement with the middle of the inclined portion IC1 during the rotation A around the middle axis R - R of plate 56.
  • bending plate 80 is removed to allow plate 56 to become close to plate 38, and at the same time to be located over plate 38, as shown in figures 5 and figure 9.
  • guide unit 36 and overlapping plates 56 and 38 can be moved in direction X simultaneously and for same amounts to draw further lengths of conductors of group 12 from their respective wire conductor supply stores. This also obtains that inclined portion IC2 becomes aligned with the position where bending plate 80 is applied, as shown in figure 8.
  • guide unit 36 and first holding unit 37 have been moved in direction X' along the conductors of group 12 to reach the position of figure 7.
  • plate 56 has been rotated with rotation B to pass from being above the portion of formed coil assembly to being below as shown.
  • plate 56 has been moved in direction Y' for 6 pitch distances to the original alignment position of figure 7.
  • plate 56 When plate 56 is below the coil assembly and in alignment with the linear portions as shown in figure 12, plate 56 can be moved in direction Z to receive the aligned linear portions of the coil assembly.
  • plate 56 has moved in direction Z to receive area Al consisting of linear portions AL7- AL12, overlapped by linear portions LI- L6, and linear portions L7 - L12, whilst leads AL1 - AL6 of the coil assembly extend beyond plate 56.
  • Figure 13 and 5b show that plate 58 has been repositioned over plate 56 and that the resulting situation can be a successive start condition similar to that of figure 7.
  • Figure 14 is a situation like that of Figure 9, although with a further portion of the coil assembly that has been formed.
  • linear portions AL13- AL18 overlap linear portions L7- L12 to form area A2 and linear portions L 13 - L18 will be seated in seats of plate 38 without being overlapped.
  • Linear portions L13 - L18 will later be overlapped by linear portions AL19 - AL24 as a result of rotating with the engagement edge 80' engaged against inclined portion IC3.
  • FIG 15 A second embodiment of the invention for forming the coil assembly of figure 2 is shown in figure 15, where group of conductors 12 reach first holding unit 37 without passing through a guide unit like 36.
  • second holding unit 55 is present and has functions similar to those of the second holding unit 55 of the first embodiment.
  • Figures 16 - 20 are stages similar those of figures 6 , 7 and 9 to form the result of the coil assembly which has been described with reference to figure 9.
  • portion IP of conductors 12 which forms the inclined portion IC1 the portion 2P, which is upstream along the feeding direction X, is positioned and being held in the holding device 37.
  • the rotation of the portion of the first portion IP occurs around an axis A" placed substantially in the middle of the first portion IP, and perpendicular to the feeding direction X.
  • the third portion 3P of the conductors is located downstream of a fourth portion 4P of the conductors, positioned in the holding device 37 in figure 20.
  • the third portion is thus bent and the bent portion is successively rotated around axis A", which obtains a rotated portion of conductors oriented in a direction opposite to the feed direction X.
  • Figure 21 is a successive stage after a second rotation around a second inclined portion.
  • the portion of the coil assembly formed in figure 21 is like that of figure 14.
  • Figure 21 show that portion Tl of the formed coil portion bears on straight portion ST1 of group of conductors 12. This will maintain portion Tl above plane P and with a certain incline.
  • Portion Tl can be repositioned in plane P after a successive series of steps which form the next extra portion of the coil assembly. In this situation, portion Tl will have been shifted to an area, where portion Tl is no longer bearing on group of conductors 12. In this condition of portion Tl, portion Tl can be pressed to return it into plane P

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Wire Processing (AREA)

Abstract

Methods and apparatuses for forming a woven coil assembly (100), the coil assembly having adjacent superimposed linear portions (L1-L6, AL7-AL12) extending parallel to each other in a first area (Al) of the coil assembly, and adjacent superimposed linear portions (L7- L12, AL13-AL18 ) extending parallel to each other in a second area (A2) of the coil assembly, wherein a plurality of head portions (T) connect the linear portions of the first area (A1) to the linear portions of the second area (A2).

Description

TITLE
METHODS AND APPARATUSES FOR FORMING WOVEN UNDULATED
COIL ASSEMBLIES DESCRIPTION
Field of the invention
The present invention relates to a method and apparatus for forming coil assemblies of a known type, like woven undulated coil assemblies.
State of the art
As is known, an undulated coil has adjacent linear portions extending parallel to each other, and a plurality of turn portions for connecting the ends of adjacent linear portions to each other.
The linear portions are inserted in slots of a stator core, whilst the turn portions protrude from respective end sides of the stator core. The section of the conductor from which the coil is formed may be circular, square or rectangular. The size of the section of the conductor is usually comparable to the width of the section of the slot of the stator core. The conductors present in a slot are normally positioned one adjacent to another in a radial direction of the stator core, i.e. along an extension, which extends from a slot opening to the bottom of the same slot.
For reasons of clarity, a coil formed from one conductor having the undulated configuration will be referred to as "a coil", whilst a number of coils having the aforementioned configuration, and which are woven together, will be referred to as a coil assembly. When examining the path of a conductor along the coil assembly which has been formed according to a woven configuration, the linear portions of one conductor are alternatively positioned above and below the linear portions of another conductor. This overlapping of a conductor is repeated at a pitch distance along the coil assembly and for a certain number of undulations. The turn portions joining these linear portions are positioned to be partially above and partially below turn portions of other coils.
Solutions for producing woven coil assemblies of undulated coils have been described in US8122593, US6376961, EP1710996 and US6140735.
Stator cores wound according to these principles can be used in dynamoelectric machines; in particular as components of traction motors and energy generators of vehicles .
The woven coil assembly can be first produced as a flat coil assembly, i.e. a planar coil assembly. Successively, the coil assembly can be transformed into a cylindrical form to insert the linear portions in the slots of the core, or the linear portions can be inserted directly into the slots of the core from the planar configurations. The turn portions protrude from the ends of the core after the linear portions have been inserted in the slots.
Normally, the coil assembly thickness can be reduced by applying compression on the flat coil assembly. Prior to the compression, the linear portions and turn portions need to be positioned with high precision in view of the low allowable tolerances that exist during the successive insertion operations in the core.
Furthermore, the production of woven coil assemblies has been mostly a manual operation, or a partially automatic using time consuming and complicated operations. Scarce success in these production attempts have been due to the high rate of inaccuracy in forming the coil assembly; particularly in forming the linear portions and the turns portions according to the tolerances required in their positioning. Summary of the invention
It is therefore an object of the present invention to provide a method and an apparatus for manufacturing woven undulated coil assemblies, which overcome the drawbacks mentioned in the foregoing of the state of the art.
It is also an object of the present invention to provide a method and an apparatus for manufacturing woven undulated coil assemblies having linear portions and turn portions positioned with high precision.
It is a further scope of the invention to provide a method and an apparatus for manufacturing woven undulated coil assemblies with reduced production times with respect to the solutions of the state of the art.
It is another object of the present invention to provide a method and an apparatus for manufacturing woven undulated coil assemblies, which are highly flexible, in other words capable of manufacturing woven coils and conductors having different geometries.
It is a particular object of the present invention to provide a method and an apparatus for manufacturing woven undulated coil assemblies, which are completely automated. These and other objects are achieved using the method and the apparatus for forming woven coils as described in the independent claims.
Other characteristics of the inventions are described in the dependent claims.
Brief description of the drawings
The invention will be now shown with the following description of an exemplary embodiment, exemplifying but not limitative, with reference to the attached drawings in which :
Figure 1 is a schematic representation of portions of undulated coils;
Figure 2 is a schematic planar representation of a portion of a coil assembly formed according to the principles of the invention;
Figure 3 is a schematic perspective view illustrating devices required for forming a coil assembly according to the invention;
Figure 3a is a section view as seen from directions 3a - 3a of figure 3;
Figure 3b is a section view as seen from directions 3b - 3b of figure 3;
Figure 4 is a schematic perspective view similar to the view of figure 3 illustrating devices required for forming a coil assembly according to the invention in a certain stage of functioning;
Figure 5 is a schematic perspective view similar to the view of figure 3 illustrating devices required for forming a coil assembly according to the invention in a further stage of functioning; Figure 5a is a view as seen from directions 5a - 5a of figure 5;
Figure 5b is a view similar to that of figure 3b in a different stage of functioning;
Figures 6 to 14 are schematic views of various stages of functioning according to the principles of the invention as seen from a direction 6 of figure 3;
Figure 15 is a view similar to figure 4, although illustrating a second embodiment of the invention;
Figures 16 to 20 are views similar to those figures 6 - 14, although illustrating various stages of functioning of the second embodiment of the invention.
Detailed description of the invention
Figure 1 and 2 show the constitution of a woven coil assembly 100. Figure 1 shows two separate undulated coil portions CI and C2, which are used as a reference for explaining the woven coil assembly of figure 2 .
A coil portion CI is shown with dark shading, whilst a coil portion C2 is shown without shading. In this example, each of the coil portions CI and C2 is formed of six wire conductors .
A portion of a formed woven coil assembly 100 consisting of twelve wire conductors is shown in figure 2. Coil assembly 100 has a flat configuration, which extends parallel to the plane P of the drawing of figure 2. The result of figure 2 can be considered an interlacing of the coil portions CI and C2 of figure 1.
Considering more particularly the interlacing, in area Al of coil assembly 100, six initial linear portions LI - superimposed, on six linear portions AL7 - AL12 of coil portion C2, therefore portions AL7 - AL12 are not visible in figure 2.
The distance between two adjacent superimposed linear portions is referred to as the pitch (see PT in figure 2) .
In area A2 of coil assembly 100, six linear portions AL13- AL18 of coil portion C2 are superimposed on six linear portions L7 - L12 of coil portion CI, therefore linear portions L7 - L12 are not visible in figure 2.
The transition between the various superimpositions occurs by means of turns T, which represent the turn portions of the coil assembly as shown in figure 2 .
Adjacent turn portions T overlap each other with an orderly progression of succession. In fact, the overlap of the turn portions is such that it causes the linear portions of any of the conductors to pass between overlapping the linear portion of another conductor in area Al, to being overlapped by another linear portion of the same conductor in an adjacent area A2, as shown in figure 2.
This alternation of the linear portions being overlapped and then overlapping of the linear portions, with reference to one conductor, occurs constantly along the coil assembly for all the conductors, and represents the weaving or interlacing occurring.
In the example shown, the twelve conductors will have linear portions and turn portions positioned according to the alternation of overlapping described above.
According to the example of figures 1 and 2, the linear portions of a specific conductor are positioned along the coil assembly at distances of 6 times the pitch distance, i.e. half the number of conductors multiplied by the pitch distance PT . Therefore as a general law, at a distances equal to half the number of conductor multiplied by the pitch distance.
Area Al is adjacent to area A2 and the two areas are delimited by a separation distance SD equal to the pitch distance PT .
Areas Al and A2 are repeated a predetermined number of times along the coil assembly 100. At the end of the last of the areas Al, or A2 of the flat coil assembly 100, the conductors form leads like AL1 - AL6 respectively of coils C2, and initial leads II- 16 of coils CI, which do not overlap as shown in figure 2.
However, when inserting the coil assembly 100 in the core of the stator, each of the leads II- 16 of coil CI can overlap a respective lead AL1 - AL6 of coil C2 during their insertion in the slots of the stator core.
The core of the stator, which receives the coil assembly of figure 2, will have a number of slots proportional to the total number of linear portions that overlap. This total includes the linear portions of initial leads that overlap, as described previously. As a result, a slot of the stator core will have two linear portions that overlap accommodated on another two linear portions that overlap, and also on other linear portions that overlap, depending on the number of areas like Al and A2, which have been foreseen in the coil assembly.
With reference to figure 3, a first embodiment is shown for forming the example of a coil assembly of figure 2. More particularly, the example foresees twelve wire conductors of conductor group 12 fed through respective exits 23' of conductor supply store 23. Each conductor of the group of conductors 12 can be fed from a respective conductor supply reel (not shown) to exits 23'. Furthermore, along direction X, each of the wire conductors of group 12 passes through a respective seat of group of seats 24 of guide unit 36, as shown in figure 3. The seats of group 24 are twelve, each being aligned with a seat of conductor store exits 23. Therefore, the number of seats of group 24 is equal to the number of conductors of group 12.
The seats of group 24 are parallel to each other to cause conductors of group 12 to remain parallel to each other and to be separate from each other by a same pitch distance PT .
Feeding the conductors of group 12 in direction X can be seen as being a feeding of the conductors in direction X in a same plane P, which contains the twelve conductors. Orthogonal directions to X will be the Y direction, and the Z direction, as shown in figure 3. Directions X', Y' and Z' are directions opposite to directions X, Y, Z, respectively .
A first unit or holding device 37 is located down stream of guide unit 36 in the feeding direction X of the conductors. First holding unit 37 is provided with a first plate 38, or support member, having group of seats 39 which are open towards a second plate 51, or cover member. The second plate 51 covers the first plate 38 (see also figure 3a) .
The seats of group 39 are twelve and are aligned with those of guide unit 36. Furthermore, the seats of group 39 are parallel to each other, and have the same separation pitch PT . First holding unit 37 is located so that seats of group 39 are aligned with seats of group 24 in order to achieve a travel of conductors of group 12 through the seats of guide unit 36 and first holding unit 37 without bending conductors of group 12.
A second device or holding unit 55 is located down stream of first holding unit 37 in the feeding direction X of the conductors. Second holding unit 55 is provided with a first plate 56, or support member, having group of seats 59, which are open towards a second plate 58, or cover member which covers the first plate 56 (see also figure 3b) .
Seats of group 59 are parallel to each other and aligned with the same separation distance PT described in the foregoing for the seats of group 24 of guide unit 36.
Second holding unit 55 is located so that seats of group 59 are aligned with seats of group 39 of first holding unit 37 in order to achieve a travel of conductors of group 12 through the seats of first holding unit 37 and second holding unit 55 without bending conductors of group 12.
First plate 38 and second plate 51 of first holding unit 37 are assembled together to allow passage of the conductors in directions X and X' through seats of group 39 and without causing unwanted movements in transverse directions Y and Y' and Z and Z' , and also for locking the conductors in directions X and X' when required.
First plate 56 and second plate 58 of second holding unit 55 are assembled together to allow passage of the conductors in the feeding direction X to reach the ends of seats of group 59 without causing unwanted movements in directions Y and Y' and Z and Z' , and also for locking the conductors in directions X and X' once the conductors have reached a required position at the ends of the seats of group 59.
The resulting situation of conductors of group 12 which have been fed through guide unit 36, first holding unit 37, and second holding unit 55 is shown in figure 3.
A clamp device, not shown, can place the conductors on the paths and in the groups of seats described with reference to figure 3. The clamp is able to hold the ends of the conductors at the pitch distance PT . The clamp device moves in direction X to pull the conductors from the supply store 23. When the clamp device moves in direction X, a conductor is aligned with a specific seat of plate 36', plate 38 and plate 56. During this movement, plate 36' ' , plate 51 and plate 58 have been removed to allow the conductors to access the seats when the clamp is moved in direction Z' . Once the conductors are located in the seats, plate 36' ' , plate 51 and plate 58 can be relocated, as shown in figure 3.
Figure 3a shows the section view of first holding unit 37 having group of seats 39 of first plate 38, where in each seat a conductor of group of conductors 12 is located. Second plate 51 covers the first plate 38. The underside of plate 51 can be in engagement with a predetermined pressure on the conductors to exert a clamping action when holding is required. If the conductors need to move though the seats, then the pressure can be reduced.
Figure 3b shows the section view of second holding unit 55 having first plate 56 with group of seats 59, where a conductor is located in each seat, as shown.
Similarly, second plate 58 covers the first plate 56. The underside of plate 58 can be in engagement with a predetermined pressure on the conductors to exert a clamping action when holding is required. If the conductors need to move though the seats, then the pressure can be reduced.
Second plate 58 is provided with extension 58' . The width W of the extension is such that the underside 58" of the extension 58' can cover and engage half the number of conductors (six conductors in the case of the example) of group of conductors 12, at a certain stage of the forming of the coil assembly.
Figures 6 - 14 are planar representations parallel to plane P showing a sequence of steps for forming the woven coil assembly of figure 2 starting from the condition of figure 3.
Figure 6 shows the situation of figure 3
A successive step of the coil forming solution is shown in figure 7, where second holding unit 55 has moved in directions Y of plane P to cause conductors of group 12 to become inclined between second holding unit 55 and first holding unit 37. In particular, during the movement of the second holding unit 55 a first portion IP' of conductors 12 (see figure 6) is bent.
For the example shown, the distance of the movement in direction Y is equal to six times the pitch PT .During the movement of second holding unit 55 in direction Y, guide unit 36 and first holding unit 37 can be moved in direction X to avoid excessive strain on the conductors of group 12. This step of figure 7 results in the formation of the inclined portion IC1 of portion IP' of conductors of group 12 located between second holding unit 55 and first holding unit 37.
A successive step of the coil forming solution is shown in figure 4 and figure 8, where second holding unit 55 has moved further in directions Y of plane P, and at the same time first holding unit 37, which is holding a second portion of conductors 2P' , is moved in direction Y for the same distance. This distance is equal to six times the pitch PT . The further movement in direction Y causes conductors of group 12 to become inclined between first holding unit 37 and guide unit 36, i.e. of a third portion of conductors 3P' , thereby forming second inclined portion IC2 as shown in figure 8. Guide unit 36, which is positioned upstream of portion 3P' , positions a fourth portion 4P' . Guide unit 36 is moved in direction X to avoid straining the conductors of group 12, when second holding unit 55 and first holding unit 37 are moved in direction Y.
In addition, as shown in figure 4 and figure 8, a bending plate 80 is positioned between first holding unit 37 and second holding unit 55. Preferably, bending plate 80 is located proximate to second plate 51 of first holding unit 37, with bending edge 80' positioned transverse and perpendicular to feeding direction X, as shown in figures 4 and 8.
More particularly, bending edge 80' can be in engagement with the inclined portion IC1 of conductors of group 12 located between first holding unit 37 and second holding unit 58. Preferably, the engagement can occur approximately at the middle of the inclined portion IC1, as shown in figures 4 and 8.
The next stage of the coil forming solution is shown in figure 9, where plate 56 of second holding unit 55 has been rotated according to arrow A around bending edge 80' . Bending edge 80' is aligned with axis A' and orthogonal to the feeding direction X. Prior to the rotation, in this stage around axis A' , plates 51 and 58 are respectively removed from the first holding unit 37 and the second holding unit 55. Possible solutions for rotations around bending edge 80' can be either that plate 56 is rotated itself around bending edge 80' , or that plate 56 is rotated around a middle axis R - R of second holding unit 55 (see figure 4) for rotation A, and at the same time plate 38 moves in direction X and direction Z' . This second combination of motions achieves that bending edge 80' remains in engagement with the middle of the inclined portion IC1 during the rotation A around the middle axis R - R of plate 56.
This combination of motions results in a rotation around the bending edge 80' .
At a predetermined position of the rotation around bending edge 80' , bending plate 80 is removed to allow plate 56 to become close to plate 38, and at the same time to be located over plate 38, as shown in figures 5 and figure 9.
With reference to figure 1, 2 and 5a, the resulting situation is that leads AL1 - AL6 of the coil assembly have been formed together with area Al consisting of linear portions L1-L6 overlapping linear portions AL7- AL12, and also linear portions L7 - L12. This result is visible in figure 5 and 5a, where linear portions L7- L12 remain uncovered and positioned on one side of plate 56.
Successively, as shown in figure 10, guide unit 36 and overlapping plates 56 and 38 can be moved in direction X simultaneously and for same amounts to draw further lengths of conductors of group 12 from their respective wire conductor supply stores. This also obtains that inclined portion IC2 becomes aligned with the position where bending plate 80 is applied, as shown in figure 8.
In figure 11 , plate 38 has been moved in direction
Z' to become free from the conductors and has been translated in direction Y' to return to the position in alignment with guide unit 36. In this way plate 38 can return to form first holding unit 37 with plate 51 repositioned as shown in figure 12.
In figure 12, guide unit 36 and first holding unit 37 have been moved in direction X' along the conductors of group 12 to reach the position of figure 7.
Also with reference to figure 12, plate 56 has been rotated with rotation B to pass from being above the portion of formed coil assembly to being below as shown. In addition, plate 56 has been moved in direction Y' for 6 pitch distances to the original alignment position of figure 7.
When plate 56 is below the coil assembly and in alignment with the linear portions as shown in figure 12, plate 56 can be moved in direction Z to receive the aligned linear portions of the coil assembly.
More particularly, with reference to figure 12, 13 and 5b, plate 56 has moved in direction Z to receive area Al consisting of linear portions AL7- AL12, overlapped by linear portions LI- L6, and linear portions L7 - L12, whilst leads AL1 - AL6 of the coil assembly extend beyond plate 56.
In a comparison between figure 5a and figure 5b, it is to be noted that in figure 5b there has been a displacement of plate 56 in direction Y' for 6 pitch distances
Figure 13 and 5b show that plate 58 has been repositioned over plate 56 and that the resulting situation can be a successive start condition similar to that of figure 7.
A following series of stages like those of figures 8 - 12 can be accomplished to continue forming the coil assembly. The end result will be that of figure 14, where bending has occurred once again around bending edge 80' for second inclined portion IC2.
Figure 14 is a situation like that of Figure 9, although with a further portion of the coil assembly that has been formed.
In fact, in the situation of figure 14 and with reference to figure 2, linear portions AL13- AL18 overlap linear portions L7- L12 to form area A2 and linear portions L 13 - L18 will be seated in seats of plate 38 without being overlapped.
Linear portions L13 - L18 will later be overlapped by linear portions AL19 - AL24 as a result of rotating with the engagement edge 80' engaged against inclined portion IC3.
It will be appreciated that the coil assembly can be completed by creating further inclined portions like ICl, IC2, IC3 and rotating against edge 80', like has been described in the foregoing sequence.
A second embodiment of the invention for forming the coil assembly of figure 2 is shown in figure 15, where group of conductors 12 reach first holding unit 37 without passing through a guide unit like 36. In the second embodiment, second holding unit 55 is present and has functions similar to those of the second holding unit 55 of the first embodiment.
Figures 16 - 20 are stages similar those of figures 6 , 7 and 9 to form the result of the coil assembly which has been described with reference to figure 9.
In the second embodiment a second inclined portion has not been formed prior to bending the first inclined portion IC1 around bending edge 80' , like has been described previously for the first embodiment with reference to figure 8.
In particular, in this embodiment, during bending of portion IP of conductors 12 which forms the inclined portion IC1, the portion 2P, which is upstream along the feeding direction X, is positioned and being held in the holding device 37. As shown schematically in figure 19, the rotation of the portion of the first portion IP occurs around an axis A" placed substantially in the middle of the first portion IP, and perpendicular to the feeding direction X.
Successively, there is feeding of the conductors in the feeding direction X, which achieves a third portion 3P of the conductors positioned between the holding device 37 and the plate 56 (figure 20) .
In particular, the third portion 3P of the conductors is located downstream of a fourth portion 4P of the conductors, positioned in the holding device 37 in figure 20. The third portion is thus bent and the bent portion is successively rotated around axis A", which obtains a rotated portion of conductors oriented in a direction opposite to the feed direction X.
Figure 21 is a successive stage after a second rotation around a second inclined portion. The portion of the coil assembly formed in figure 21 is like that of figure 14. Figure 21 show that portion Tl of the formed coil portion bears on straight portion ST1 of group of conductors 12. This will maintain portion Tl above plane P and with a certain incline.
Portion Tl can be repositioned in plane P after a successive series of steps which form the next extra portion of the coil assembly. In this situation, portion Tl will have been shifted to an area, where portion Tl is no longer bearing on group of conductors 12. In this condition of portion Tl, portion Tl can be pressed to return it into plane P
The foregoing description exemplary embodiments of the invention will so fully reveal the invention according to the conceptual point of view, so that others, by applying current knowledge, will be able to modify and/or adapt for various applications such embodiment without further research and without parting from the invention, and, accordingly, it is therefore to be understood that such adaptations and modifications will have to be considered as equivalent to the specific embodiments. The means and the materials to realise the different functions described herein could have a different nature without, for this reason, departing from the field of the invention. It is to be understood that the phraseology or terminology that is employed herein is for the purpose of description and not of limitation.

Claims

1. A method for forming a woven coil assembly (100), the coil assembly having adjacent superimposed linear portions (L1-L6, AL7-AL12) extending parallel to each other in a first area (Al) of the coil assembly, and adjacent superimposed linear portions (L7-L12, AL13- A118) extending parallel to each other in a second area (A2) of the coil assembly, wherein a plurality of head portions (T) connect the linear portions of the first area (Al) to the linear portions of the second area (A2), the method comprising:
feeding a plurality of conductors (12) for a predetermined length in a feeding direction (X) parallel to each other and substantially parallel to a plane (P) ;
bending a first portion (IP') of the length of the plurality of conductors (12) according to a predetermined orientation; the plurality of conductors (12) of the first portion after bending result parallel to each other, oriented according to an angle of orientation, and positioned in the feeding direction downstream of a second portion (2P' ) of the length of the plurality of conductors that have not been bent;
bending a third portion (3Ρ') of the length of the plurality of conductors (12) according to the predetermined orientation; the plurality of conductors (12) of the third portion (3Ρ') after bending result parallel to each other, oriented according to the angle of orientation, and positioned in the feeding direction downstream of a fourth portion (4Ρ') of the length of the plurality of conductors that have not been bent; the fourth portion (4Ρ') positioned in the feeding direction upstream of the first portion (IP'); prior to bending a further portion according to the predetermined orientation of the length of the plurality of conductors (12), rotating a portion of the first portion (IP') about an axis (A' ) positioned substantially midway along the first portion (IP') and perpendicular to the feeding direction (X) ; the rotating positioning the rotated portion of the first portion (IP') of conductors parallel to each other in a direction opposite to the feeding direction (X) .
2. Method according to claim 1, further comprising, after performing the steps of claim 1, rotating a portion of the third portion (IC2) about an axis (A' ) positioned substantially midway along the third portion (IC2) and perpendicular to the feeding direction (X) ; the rotating positioning the rotated portion of the third portion (IC2) of conductors parallel to each other in a direction opposite to the feeding direction (X) .
3. Method according to claim 2, further comprising, after performing the steps of claim 2, bending a fourth portion (IC3) of the length of the plurality of conductors (12) according to a predetermined orientation .
4. Method according to claim 3 wherein the steps of claims 1 to 3 are repeated a predetermined number of times to form a corresponding number of first areas (Al) and second areas (A2) to complete the coil assembly (100) .
5. A method for forming a woven coil assembly (100), the coil assembly having adjacent superimposed linear portions (L1-L6, AL7-AL12) extending parallel to each other in a first area (Al) of the coil assembly, and adjacent superimposed linear portions (L7-L12, AL13- A118) extending parallel to each other in a second area (A2) of the coil assembly, wherein a plurality of turn portions (T) connecting the linear portions of the first area (Al) to the linear portions of the second area (A2), the method comprising:
feeding a plurality of conductors (12) for a first predetermined length in a feeding direction (X) and substantially parallel to a plane P through a guide unit (36) ;
holding each of the conductors in a respective seat (39) of a first holding device (37) located at a first position of the predetermined length;
holding each of the conductors in respective seats (59) of a second holding device (55) located at a second position of the predetermined length;
moving the second holding device (55) in a transverse direction (Y) with respect to the first holding device (37) to form inclined portions (IC1) of the conductors between the first holding device (37) and the second holding device (55);
moving the first holding device (37) in a transverse direction (Y) with respect to the first holding device to form second inclined portions (IC2) of the conductors between the first holding device (37) and the guide unit (36);
rotating the portion of the conductors supported by the second holding device (55) about a rotation axis (A' ) in a rotation direction (A) , the rotation axis (A' ) being perpendicular to the feeding direction (X) to engage the inclined portions transversely and perpendicularly to the feeding direction (X) .
6. The method of claim 5 further comprising:
receiving each of the conductors (12) in a respective seat (39) of a first support member (38) of the first holding device (37);
holding each of the conductors in the respective seat (39) using a first cover member (51) facing the first support member (38);
receiving each of the conductors (12) in a respective seat (59) of a second support member (56) of the second holding device (55);
holding each of the conductors (12) in the respective seat (59) using a second cover member (58) facing the second support member (56);
removing the first cover member (51) for the rotation;
removing the second cover member (56) for the rotation .
7. The method of claim 5 comprising translating the first support member (38) and the second support member (56) in the feeding direction (X) after the rotation.
8. The method of claim 5 wherein the steps of claim 1 are repeated a predetermined number of times to form corresponding numbers of first areas (Al) and second areas (A2 ) .
Apparatus for forming a woven coil assembly (100), the coil assembly having adjacent superimposed linear portions (L1-L6, AL7-AL12) extending parallel to each other in a first area (Al) of the coil assembly, and adjacent superimposed linear portions (L7-L12, AL13- A118) extending parallel to each other in a second area (A2) of the coil assembly, wherein a plurality of turn portions (T) connect the linear portions of the first area (Al) to the linear portions of the second area (A2), the apparatus comprising:
a first holding device (37) located at a first position along a feeding direction of a plurality of conductors (12), the first holding device (37) is arranged to hold the conductors in a plurality of seats (39), each of the plurality of seats receiving a respective conductor;
a second holding device (55) located at a second position along a feeding direction of a plurality of conductors (12), the second holding device (55) is arranged to hold the conductors in a plurality of seats (59), each of the plurality of seats receiving a respective conductor; wherein the second holding device (55) is capable of moving in a transverse direction (Y) with respect to the first holding device (37) to form inclined portions of conductors (IC1) between the first holding device and the second holding device (55);
a plate for bending (80) provided with a bending edge (80' ) positioned transversally and perpendicularly to the feeding direction (X) ; wherein the second holding device (55) is then capable of rotating a portion of conductors around the bending edge (80') in a rotation direction (A); during the rotation the bending edge (80') engages the inclined portions transversally and perpendicularly to the feeding direction.
10. Apparatus according to claim 9 wherein the first holding device (37) comprises:
a first support member (38) having a group of seats (39) receiving each of the conductors (12) in a respective seat (39), each seat being capable of receiving a respective conductor (12);
a first cover member (51) facing the first support member (38) when holding with the first support member (38) each of the conductors (12) .
11. Apparatus according to claim 9 wherein the second holding device (55) comprises:
a second support member (56) having a group of seats (59) receiving each of the conductors (12) in a respective seat (39), each seat being capable of receiving a respective conductor (12);
a second cover member (58) facing the second support member (56) when holding with the second support member (58) each of the conductors (12) .
12. Apparatus according to claim 11, wherein the second cover member (58) is provided with an extension (58') having a width (W) that engages half of the number of conductors (12), at a certain stage of the forming of the coil assembly (100) .
A method for forming a woven coil assembly (100), the coil assembly having adjacent superimposed linear portions (L1-L6, AL7-AL12) extending parallel to each other in a first area (Al) of the coil assembly, and adjacent superimposed linear portions (L7-L12, AL13- A118) extending parallel to each other in a second area (A2) of the coil assembly, wherein a plurality of head portions (T) connect the linear portions of the first area (Al) to the linear portions of the second area (A2), the method comprising performing:
a first step of feeding a plurality of conductors (12) for a predetermined length in a feeding direction (X) parallel to each other and substantially parallel to a plane (P) ;
after said first step, a second step of bending a first portion (IP) of the length of the plurality of conductors (12) according to a predetermined orientation; the plurality of conductors (12) of the first portion after bending result parallel to each other, oriented according to an angle of orientation, and positioned in the feeding direction (X) downstream of a second portion (2P) of the length of the plurality of conductors that have not been bent;
after the second step, a third step of rotating a portion of the first portion (IP) about an axis (A'') positioned substantially midway along the first portion (IP) and perpendicular to the feeding direction (X) ; the rotating positioning the rotated portion of the first portion (IP') of conductors parallel to each other in a direction opposite to the feeding direction (X) ;
after said third step, a fourth step of feeding the plurality of conductors (12) for a predetermined length in a feeding direction (X) parallel to each other and substantially parallel to a plane (P) ;
after said fourth step, a fifth step of bending a third portion (3P) of the length of the plurality of conductors (12) according to a predetermined orientation; the plurality of conductors (12) of the third portion after bending result parallel to each other, oriented according to an angle of orientation, and positioned in the feeding direction (X) downstream of a fourth portion (4P) of the length of the plurality of conductors that have not been bent;
after said fifth step, a sixth step of rotating a portion of the third portion (3P) about the axis (A'') positioned substantially midway along the third portion (3P) and perpendicular to the feeding direction (X) ; the rotating positioning the rotated portion of the third portion (3P)of conductors parallel to each other in a direction opposite to the feeding direction (X) .
14. Method according to claim 13, wherein the steps of claim 1 are repeated a predetermined number of times to form a corresponding number of first areas (Al ) and second areas (A2) to complete the coil assembly (100) .
15. Method according to claim 13 wherein portions of the turns (T) are repositioned in the plane (P) . A method for forming a woven coil assembly (100), the coil assembly having adjacent superimposed linear portions (L1-L6, AL7-AL12) extending parallel to each other in a first area (Al) of the coil assembly, and adjacent superimposed linear portions (L7-L12, AL13- A118) extending parallel to each other in a second area (A2) of the coil assembly, wherein a plurality of turn portions (T) connecting the linear portions of the first area (Al) to the linear portions of the second area (A2), the method comprising:
feeding a plurality of conductors (12) for a first predetermined length in a feeding direction (X) and substantially parallel to a plane (P) ;
holding each of the conductors in respective seats
(39) of a first holding device (37) located at a first position of the predetermined length;
holding each of the conductors in respective seats
(59) of a second holding device (55) located at a second position of the predetermined length;
moving the second holding device (55) in a transverse direction (Y) with respect to the first holding device (37) to form inclined portions (IC1) of the conductors between the first holding device (37) and the second holding device (55);
rotating the portion of the conductors supported by the second holding device (55) about a rotation axis
(A' ' ) in a rotation direction (A) , the rotation axis
(A' ' ) being perpendicular to the feeding direction (X) to engage the inclined portions transversely and perpendicularly to the feeding direction (X) . The method of claim 16 further comprising:
receiving each of the conductors (12) in a respective seat (59) of a second support member (56) of the second holding device (55);
holding each of the conductors (12) in the respective seat (59) using a second cover member (58) facing the second support member (56);
receiving each of the conductors (12) in a respective seat (39) of a first support member (38) of the first holding device (37);
holding each of the conductors in the respective seat (39) using a first cover member (51) facing the first support member (38);
removing the first cover member (51) for the rotation;
removing the second cover member (56) for the rotation .
The method of claim 16 comprising translating the first support member (38) and the second support member (56) in the feeding direction (X) after the rotation .
The method of claim 16 wherein the steps of claim 1 are repeated a predetermined number of times to form corresponding numbers of first areas (Al) and second areas (A2 ) .
Apparatus for forming a woven coil assembly (100), the coil assembly having adjacent superimposed linear portions (L1-L6, AL7-AL12) extending parallel to each other in a first area (Al) of the coil assembly, and adjacent superimposed linear portions (L7-L12, AL13- A118) extending parallel to each other in a second area (A2) of the coil assembly, wherein a plurality of turn portions (T) connect the linear portions of the first area (Al) to the linear portions of the second area (A2), the apparatus comprising:
a first holding device (37) located at a first position along a feeding direction of a plurality of conductors (12), the first holding device (37) is arranged to hold the conductors in a plurality of seats (39), each of the plurality of seats receiving a respective conductor;
a second holding device (55) located at a second position along a feeding direction of a plurality of conductors (12), the second holding device (55) is arranged to hold the conductors in a plurality of seats (59), each of the plurality of seats receiving a respective conductor; wherein the second holding device (55) is capable of moving in a transverse direction (Y)with respect to the first holding device (37) to form inclined portions of conductors (IC1) between the first holding device and the second holding device (55);
a plate for bending (80) provided with a bending edge (80') positioned transversally and perpendicularly to the feeding direction (X) ; wherein the second holding device (55) is then capable of rotating a portion of conductors around the bending edge (80') in a rotation direction (A) ; during the rotation the bending edge (80') engages the inclined portions transversally and perpendicularly to the feeding direction (X) .
PCT/IB2016/052200 2015-04-30 2016-04-18 Methods and apparatuses for forming woven undulated coil assemblies WO2016174542A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP16726947.1A EP3289672B1 (en) 2015-04-30 2016-04-18 Methods and apparatuses for forming woven undulated coil assemblies
RS20190882A RS59058B1 (en) 2015-04-30 2016-04-18 Methods and apparatuses for forming woven undulated coil assemblies
PL16726947T PL3289672T3 (en) 2015-04-30 2016-04-18 Methods and apparatuses for forming woven undulated coil assemblies
US15/570,735 US10749418B2 (en) 2015-04-30 2016-04-18 Methods for forming woven undulated coil assemblies
KR1020177034722A KR102619070B1 (en) 2015-04-30 2016-04-18 Method and apparatus for forming wavy woven coil assemblies
CN201680024915.3A CN107534367B (en) 2015-04-30 2016-04-18 The method and apparatus for being used to form woven stitch component
SI201630317T SI3289672T1 (en) 2015-04-30 2016-04-18 Methods and apparatuses for forming woven undulated coil assemblies
ES16726947T ES2741628T3 (en) 2015-04-30 2016-04-18 Method and apparatus for forming coil assemblies of a known type
US16/992,998 US11336160B2 (en) 2015-04-30 2020-08-13 Methods for forming woven undulated coil assemblies
US17/745,764 US11658553B2 (en) 2015-04-30 2022-05-16 Apparatuses for forming woven undulated coil assemblies

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
ITPI20150032 2015-04-30
ITPI2015A000033 2015-04-30
ITPI20150031 2015-04-30
ITPI2015A000031 2015-04-30
ITPI20150034 2015-04-30
ITPI2015A000032 2015-04-30
ITPI2015A000034 2015-04-30
ITPI20150033 2015-04-30

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US15/570,735 A-371-Of-International US10749418B2 (en) 2015-04-30 2016-04-18 Methods for forming woven undulated coil assemblies
US16/992,998 Division US11336160B2 (en) 2015-04-30 2020-08-13 Methods for forming woven undulated coil assemblies

Publications (1)

Publication Number Publication Date
WO2016174542A1 true WO2016174542A1 (en) 2016-11-03

Family

ID=56098289

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/052200 WO2016174542A1 (en) 2015-04-30 2016-04-18 Methods and apparatuses for forming woven undulated coil assemblies

Country Status (10)

Country Link
US (3) US10749418B2 (en)
EP (1) EP3289672B1 (en)
KR (1) KR102619070B1 (en)
CN (1) CN107534367B (en)
ES (1) ES2741628T3 (en)
PL (1) PL3289672T3 (en)
RS (1) RS59058B1 (en)
SI (1) SI3289672T1 (en)
TR (1) TR201910349T4 (en)
WO (1) WO2016174542A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017120559A1 (en) 2017-07-28 2019-01-31 Grob-Werke Gmbh & Co. Kg Method and device for winding a wave winding mat and thus producible wave winding mat
WO2020051610A3 (en) * 2018-09-12 2020-05-14 Miba Automation Systems Ges.M.B.H. Method for providing hairpin-type elements for windings of electrical machines
WO2020177815A1 (en) 2019-03-05 2020-09-10 Grob-Werke Gmbh & Co. Kg Bending method, manufacturing method, bending device and manufacturing device for a wave winding mat and wave winding mat obtainable with same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20110435A1 (en) 2011-05-16 2012-11-17 Atop Spa APPARATUS AND PROCEDURE FOR THE CONSTRUCTION OF REEL ELEMENTS FOR DYNAMIC ELECTRIC MACHINES WITH BENDING.
ITPI20130092A1 (en) 2013-10-18 2015-04-19 Atop Spa EQUIPMENT AND METHOD TO PRODUCE COMPONENTS OF DYNAMOELECTRIC MACHINES
PL3289672T3 (en) 2015-04-30 2019-10-31 Atop Spa Methods and apparatuses for forming woven undulated coil assemblies
ITUB20152330A1 (en) 2015-07-20 2017-01-20 Atop Spa METHOD AND EQUIPMENT FOR INSERT ASSEMBLED ROLLS IN WAVY DRAWERS OF DYNAMOELECTRIC MACHINES
JP6990638B2 (en) * 2018-09-18 2022-01-12 本田技研工業株式会社 Sheet-shaped wave winding coil
JP2021058076A (en) * 2019-04-24 2021-04-08 本田技研工業株式会社 Conductor formation device and manufacturing method of wave winding coil
DE102019117966A1 (en) * 2019-07-03 2021-01-07 Elmotec Statomat Holding GmbH Method for producing a coil winding for insertion into radially open slots in stators or rotors in electrical machines
CN112510939B (en) * 2021-02-07 2021-04-13 上海市安装工程集团有限公司 Automatic bending device and method for magnetic suspension long stator coil
DE102021130257B4 (en) 2021-11-19 2023-07-06 Aumann Espelkamp Gmbh Method and device for producing a woven winding mat for a coil winding of an electrical machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6140735A (en) 1998-05-20 2000-10-31 Denso Corporation Rotary electric machine and method of manufacturing the same
US6376961B2 (en) 2000-02-07 2002-04-23 Mitsubshi Denki Kabushiki Kaisha Coil assembly of rotating electrical machinery and method for producing the same, and stator of rotating electric machinery using the same coil assembly
US20060022547A1 (en) * 2004-07-20 2006-02-02 Sadik Sadiku Method and device for producing a coil winding for stators or rotors of electric machines as well as a stator or rotor produced therewith
EP1710896A1 (en) * 2004-01-28 2006-10-11 Mitsubishi Denki Kabushiki Kaisha Process for producing winding assembly of dynamo-electric machine and production system of winding assembly
EP1710996A1 (en) 2005-04-06 2006-10-11 Alcatel Object perception method and a related perceiving device
US8122593B2 (en) 2008-03-05 2012-02-28 Denso Corporation Weaving machine for coil assembly of rotary electric machine
FR2968858A1 (en) * 2010-12-10 2012-06-15 Valeo Equip Electr Moteur Rotor or stator for e.g. alternator, of motor vehicle, has continuous electric wires that are inserted in each of notches, and provided with set of winding turns that are higher than another set of winding turns and form peripheral path

Family Cites Families (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476744A (en) 1946-09-11 1949-07-19 Leece Neville Co Coil shaping apparatus
GB644761A (en) 1947-10-10 1950-10-18 Gen Motors Corp Improved apparatus for the manufacture of armatures for dynamo-electric machines
US3631591A (en) 1967-05-22 1972-01-04 Essex International Inc Method and apparatus for making concentric, multiturn nested dynamoelectric machine field coils
US3543337A (en) 1968-08-14 1970-12-01 Microdot Inc Apparatus for manufacturing insulators for multiple conductor connectors
US3689976A (en) 1971-04-15 1972-09-12 Smith Corp A O Coil transfer apparatus
GB1496445A (en) 1975-03-26 1977-12-30 Nii Ex I Avtomobil Elektroobor Bar windings for electrical machines
US4052783A (en) 1976-05-17 1977-10-11 Shively Lawrence A Apparatus and method for winding armatures
US4727742A (en) 1986-02-24 1988-03-01 Amp Incorporated Crimping tool for fiber optic splice connector
US4750258A (en) 1986-10-14 1988-06-14 Emerson Electric Co. Apparatus for and method of simultaneously, axially inserting multiple pole, multiple phase windings
IT1219076B (en) 1988-03-04 1990-04-24 Pavesi & C Spa Off Mec PROCEDURE AND DEVICE FOR INSERTING A MULTIPLE OF PHASE ISOLATORS IN THE STATOR GROOVES OF A DYNAMOELECTRIC MACHINE
US5714824A (en) 1994-06-23 1998-02-03 Hydro-Quebec Conductor section for a stator frame of a polyphase dynamoelectric machine
US5586384A (en) 1995-04-28 1996-12-24 Globe Products Inc. Stator manufacturing method and apparatus
US6389678B1 (en) 1996-05-31 2002-05-21 Emerson Electric Co. Method of constructing a salient pole motor
JP3708288B2 (en) 1997-05-23 2005-10-19 松下電器産業株式会社 Armature coil winding machine and winding method using the same
EP0961384B1 (en) 1998-05-25 2005-02-09 Denso Corporation Stator of vehicle ac generator and method of manufacturing the same
JP3823556B2 (en) * 1998-08-24 2006-09-20 株式会社デンソー Wave winding coil of rotating electric machine and method for manufacturing the same
JP3196738B2 (en) 1998-09-11 2001-08-06 株式会社デンソー Stator manufacturing apparatus and stator manufacturing method
DE19847843A1 (en) 1998-10-16 2000-05-04 Siemens Ag bracket
DE19902198C2 (en) 1999-01-21 2001-02-22 Elmotec Elektro Motoren Tech Method and device for the axial drawing-in of coils in stators or rotors of electrical machines
JP3104700B1 (en) 1999-03-30 2000-10-30 株式会社デンソー Method and apparatus for joining windings of rotating electric machine
JP3201397B2 (en) 1999-03-30 2001-08-20 株式会社デンソー Method of manufacturing rotating electric machine
JP3199068B2 (en) 1999-03-31 2001-08-13 株式会社デンソー Stator manufacturing equipment
US6339871B1 (en) 1999-04-02 2002-01-22 Denso Corporation Method of manufacturing rotary electric machine's stator
JP3843644B2 (en) 1999-04-14 2006-11-08 株式会社デンソー Stator for rotating electrical machine and method for manufacturing the same
IT1309852B1 (en) 1999-06-15 2002-02-05 Atop Spa MACHINE AND METHOD FOR INSERTING INSULATOR INTO GROOVES FOR ELECTRIC MOTORS.
JP4537519B2 (en) 1999-12-22 2010-09-01 澤藤電機株式会社 Winding device for stator core
JP3589134B2 (en) 2000-01-12 2004-11-17 株式会社デンソー Stator manufacturing method and apparatus
US7730401B2 (en) 2001-05-16 2010-06-01 Synaptics Incorporated Touch screen with user interface enhancement
US20030135988A1 (en) 2001-10-12 2003-07-24 Massimo Pelletta Dynamo-electric machine component core coil forming system
JP3551375B2 (en) 2001-12-26 2004-08-04 株式会社デンソー Rotating electric machine and method of manufacturing the same
JP3740421B2 (en) 2002-01-10 2006-02-01 株式会社日立製作所 Connection method between rotating electric machine and stator lead
JP3889630B2 (en) 2002-01-21 2007-03-07 三菱電機株式会社 Winding joining method for rotating electrical machines
JP3680801B2 (en) 2002-02-27 2005-08-10 株式会社デンソー Winding joining method for rotating electrical machines
US20040046476A1 (en) 2002-05-14 2004-03-11 Raffaele Becherucci Dynamo-electric machine component winding methods and apparatus
JP3775349B2 (en) 2002-06-03 2006-05-17 株式会社デンソー Method of manufacturing stator winding of rotating electrical machine, winding structure, and method of manufacturing winding
JP3783659B2 (en) 2002-06-25 2006-06-07 株式会社デンソー Manufacturing method of segment sequential stator coil of rotating electrical machine
JP2004032897A (en) 2002-06-25 2004-01-29 Denso Corp Segments-sequentially-joined stator coil for rotary electric machine and its manufacturing method
US7275299B2 (en) 2002-07-30 2007-10-02 Aisin Aw Co., Ltd. Motor manufacturing process
JP2004072839A (en) 2002-08-02 2004-03-04 Toyota Motor Corp Method and tool for annular alignment of coil segment
JP3894483B2 (en) 2002-09-04 2007-03-22 三菱電機株式会社 Winding member of rotating electrical machine, method of manufacturing winding assembly, and apparatus for manufacturing winding member
FR2845536B1 (en) 2002-10-07 2005-01-07 Valeo Equip Electr Moteur ARRANGEMENT FOR WELDING THE FREE END OF ELECTRICAL CONDUCTOR SEGMENT PAIRS OF A WINDING OF A ROTATING ELECTRICAL MACHINE
US7370401B2 (en) 2003-04-03 2008-05-13 Atop S.P.A. Apparatus and methods for wire coil lead placement
DE10315361A1 (en) 2003-04-03 2004-10-14 Robert Bosch Gmbh Process for the production of windings and winding interconnections
CN1930645B (en) 2004-02-05 2011-12-14 运动先锋科技公司 Method and system used for forming Winding core with slot
US7325764B2 (en) 2004-04-26 2008-02-05 Globe Motors, Inc. Method and apparatus for winding field coils for dynamo-electric machines
JP4654068B2 (en) 2005-05-24 2011-03-16 日立オートモティブシステムズ株式会社 Bonded electric wire, method of processing the bonded electric wire, rotating electric machine stator, rotating electric machine stator manufacturing method, and bonded electric wire manufacturing apparatus
US7549941B2 (en) 2005-09-09 2009-06-23 Eaton Corporation Vehicle differential including pump with variable-engagement clutch
DE102005054863A1 (en) * 2005-11-21 2007-05-24 Robert Bosch Gmbh Folded loop winding for a stand
FR2896351B1 (en) 2006-01-16 2008-04-18 Valeo Equip Electr Moteur METHOD FOR PRODUCING A STATOR OF ROTATING ELECTRIC MACHINE AND ARRANGEMENT OF CONDUCTORS ON A SUPPORT
ITPI20060031A1 (en) 2006-03-13 2007-09-14 Atop Spa EQUIPMENT AND METHODS FOR WRAPPING WIRE COILS AROUND NUCLEI OF ELECTRIC MACHINES.
JP4715776B2 (en) 2007-03-06 2011-07-06 トヨタ自動車株式会社 Manufacturing method of motor stator and motor stator
US7480987B1 (en) 2007-03-22 2009-01-27 Tecnomatic, S.P.A. Method for pre-forming conductors for motor rotors and stators
US7941910B2 (en) 2007-03-22 2011-05-17 Tecnomatic S.P.A. Method for removing winding conductors from a twisting machine and placing them in a rotor stator stack
US8215000B2 (en) 2007-07-20 2012-07-10 Tecnomatic, S.P.A. Methods for twisting rotor and stator ends
ITPI20080023A1 (en) 2008-03-19 2009-09-20 Atop Spa EQUIPMENT AND METHODS FOR WINDING SUPPORTS FOR REELS AND SINGLE POLE NUCLEI FOR DYNAMIC ELECTRIC MACHINES
KR101547162B1 (en) 2008-04-07 2015-08-25 레미 테크놀러지스 엘엘씨 Method and device for bending electric machine conductors
DE102008019479A1 (en) * 2008-04-17 2009-10-29 Elmotec Statomat Vertriebs Gmbh Stator or rotor for electrical machines and method for its manufacture
JP5233682B2 (en) 2009-01-08 2013-07-10 アイシン・エィ・ダブリュ株式会社 Bending machine
IT1394587B1 (en) 2009-04-29 2012-07-05 Atop Spa EQUIPMENT AND METHOD FOR WINDING AND FINISHING NUCLEI FOR DYNAMIC ELECTRIC MACHINES
TWI392196B (en) 2009-06-30 2013-04-01 Victory Ind Corp Method of Making Stirrups for Automobile Generators
FR2947968A1 (en) 2009-07-09 2011-01-14 Valeo Equip Electr Moteur WINDING OF A ROTATING ELECTRIC MACHINE
US8918986B2 (en) 2010-03-03 2014-12-30 Tecnomatic S.P.A. Method for making a high fill factor stator for an electrical machine
WO2011111682A1 (en) 2010-03-11 2011-09-15 株式会社 豊田自動織機 Stator for rotating electrical machine, method for manufacturing stator, and method for manufacturing coil for stator
WO2011160806A1 (en) 2010-06-21 2011-12-29 Atop S.P.A. Apparatus and method for winding supports for coils and single poles of cores for dynamoelectric machines
ES2567584T3 (en) 2010-07-08 2016-04-25 Tecnomatic S.P.A. Stator or rotor of an electric machine
JP5460884B2 (en) * 2010-12-24 2014-04-02 三菱電機株式会社 Rotating electric machine for vehicle and method for manufacturing winding assembly used therefor
BR112013017243B1 (en) 2011-01-04 2020-09-29 Tecnomatic S.P.A TORSION METHOD AND DEVICE FOR TWISTING EXTREMITY PORTIONS FREE OF BARRIERS AND TORSION EQUIPMENT
ITTO20110199A1 (en) 2011-03-07 2012-09-08 Atop Spa APPARATUS AND PROCEDURE FOR THE ALIGNMENT OF CONDUCTORS OF COIL ELEMENTS IN DYNAMO ELECTRIC MACHINES TO PERFORM WELDING OPERATIONS.
ITTO20110435A1 (en) 2011-05-16 2012-11-17 Atop Spa APPARATUS AND PROCEDURE FOR THE CONSTRUCTION OF REEL ELEMENTS FOR DYNAMIC ELECTRIC MACHINES WITH BENDING.
BR112014000323B1 (en) 2011-07-07 2020-02-27 Tecnomatic S.P.A. STATOR FOR AN ELECTRICAL MACHINE, ELECTRICAL MACHINE AND ELECTRIC OR HYBRID DRIVING VEHICLE
US9293957B2 (en) * 2011-10-27 2016-03-22 Toyota Jidosha Kabushiki Kaisha Segment coil, method of manufacturing segment coil, and stator including segment coil
DE112012004477T5 (en) 2011-10-27 2014-07-10 Toyota Jidosha Kabushiki Kaisha Segment coil, method for producing a segment coil, wire rod for a segment coil and stator
JP2013135527A (en) 2011-12-26 2013-07-08 Asmo Co Ltd Method for manufacturing stator, apparatus for manufacturing stator and stator
JP5782566B2 (en) 2012-06-22 2015-09-24 本田技研工業株式会社 Stator manufacturing apparatus and stator manufacturing method
US9071116B2 (en) 2013-01-17 2015-06-30 Remy Technologies, Llc Apparatus for installing stator winding conductors
ITPI20130020A1 (en) 2013-03-20 2014-09-21 Atop Spa EQUIPMENT AND METHOD TO PRODUCE STABILIZERS OF DYNAMOELECTRIC MACHINES FORMED BY A POLO SEGMENT ASSEMBLY
ITPI20130092A1 (en) 2013-10-18 2015-04-19 Atop Spa EQUIPMENT AND METHOD TO PRODUCE COMPONENTS OF DYNAMOELECTRIC MACHINES
ES2698510T3 (en) 2014-03-07 2019-02-05 Atop Spa Apparatus and method for forming coil elements
PL3289672T3 (en) 2015-04-30 2019-10-31 Atop Spa Methods and apparatuses for forming woven undulated coil assemblies
ITUB20152330A1 (en) 2015-07-20 2017-01-20 Atop Spa METHOD AND EQUIPMENT FOR INSERT ASSEMBLED ROLLS IN WAVY DRAWERS OF DYNAMOELECTRIC MACHINES

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6140735A (en) 1998-05-20 2000-10-31 Denso Corporation Rotary electric machine and method of manufacturing the same
US6376961B2 (en) 2000-02-07 2002-04-23 Mitsubshi Denki Kabushiki Kaisha Coil assembly of rotating electrical machinery and method for producing the same, and stator of rotating electric machinery using the same coil assembly
EP1710896A1 (en) * 2004-01-28 2006-10-11 Mitsubishi Denki Kabushiki Kaisha Process for producing winding assembly of dynamo-electric machine and production system of winding assembly
US20060022547A1 (en) * 2004-07-20 2006-02-02 Sadik Sadiku Method and device for producing a coil winding for stators or rotors of electric machines as well as a stator or rotor produced therewith
EP1710996A1 (en) 2005-04-06 2006-10-11 Alcatel Object perception method and a related perceiving device
US8122593B2 (en) 2008-03-05 2012-02-28 Denso Corporation Weaving machine for coil assembly of rotary electric machine
FR2968858A1 (en) * 2010-12-10 2012-06-15 Valeo Equip Electr Moteur Rotor or stator for e.g. alternator, of motor vehicle, has continuous electric wires that are inserted in each of notches, and provided with set of winding turns that are higher than another set of winding turns and form peripheral path

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017120559A1 (en) 2017-07-28 2019-01-31 Grob-Werke Gmbh & Co. Kg Method and device for winding a wave winding mat and thus producible wave winding mat
WO2019020148A1 (en) 2017-07-28 2019-01-31 Grob-Werke Gmbh & Co. Kg Method and device for winding a wave winding mat and wave winding mat that can be produced by means of same
CN111149285A (en) * 2017-07-28 2020-05-12 格劳博-沃克有限责任两合公司 Method and apparatus for winding a wave winding mat and wave winding mat that can be manufactured by the same
CN111149285B (en) * 2017-07-28 2022-05-03 格劳博-沃克有限责任两合公司 Method and apparatus for winding wave winding pad
US11581789B2 (en) 2017-07-28 2023-02-14 Grob-Werke Gmbh & Co. Kg Method and device for winding a wave winding mat and wave winding mat that can be produced by means of the same
WO2020051610A3 (en) * 2018-09-12 2020-05-14 Miba Automation Systems Ges.M.B.H. Method for providing hairpin-type elements for windings of electrical machines
CN112703665A (en) * 2018-09-12 2021-04-23 米巴自动化系统有限责任公司 Method for providing a hairpin element for a winding of an electric machine
US20210194340A1 (en) * 2018-09-12 2021-06-24 Miba Automation Systems Ges.M.B.H. Method for manufacturing shaped rods
CN112703665B (en) * 2018-09-12 2024-02-09 米巴自动化系统有限责任公司 Method for providing hairpin elements for windings of an electric machine
WO2020177815A1 (en) 2019-03-05 2020-09-10 Grob-Werke Gmbh & Co. Kg Bending method, manufacturing method, bending device and manufacturing device for a wave winding mat and wave winding mat obtainable with same

Also Published As

Publication number Publication date
PL3289672T3 (en) 2019-10-31
RS59058B1 (en) 2019-08-30
US20200381983A1 (en) 2020-12-03
SI3289672T1 (en) 2019-09-30
CN107534367B (en) 2019-08-20
US20220278597A1 (en) 2022-09-01
KR20180002754A (en) 2018-01-08
US10749418B2 (en) 2020-08-18
KR102619070B1 (en) 2023-12-27
CN107534367A (en) 2018-01-02
EP3289672A1 (en) 2018-03-07
EP3289672B1 (en) 2019-06-26
US11658553B2 (en) 2023-05-23
ES2741628T3 (en) 2020-02-11
TR201910349T4 (en) 2019-08-21
US11336160B2 (en) 2022-05-17
US20180294700A1 (en) 2018-10-11

Similar Documents

Publication Publication Date Title
US11658553B2 (en) Apparatuses for forming woven undulated coil assemblies
US20230109380A1 (en) Method for inserting undulated coil assemblies in slots of cores of dynamoelectric machines
US11394281B2 (en) Method for manufacturing a coil mat from wave winding wires by plugging
EP1583205B1 (en) Method for mounting coil on core for rotary electric machine
US8018112B2 (en) Coil wire for coil assembly for rotary electrical machine
US10637320B2 (en) Stator assemblies for three phase dynamoelectric machines and related winding methods
US20080010812A1 (en) Method of forming single-layer coils
US11509200B2 (en) Process for making a continuous bar winding for an electric machine
US20210305886A1 (en) Method of manufacturing wave winding coil, and stator for rotating electrical machine
CN111865012A (en) Conductor forming device and method for manufacturing wave winding coil
US20220360150A1 (en) Method for producing a coil winding for insertion into radially open slots of stators or rotors of electrical machines
CN110268609A (en) The forming method of coil and the manufacturing method of stator
KR20120094942A (en) Method for manufacturing a winding coil of electric machine
US11515769B2 (en) Method and apparatus for compact insertion of multiphase pseudo helical wave winding into electrical machine
CN107925321B (en) Method for manufacturing armature
JP2005304108A (en) Stator of rotary motor, method for applying coil of rotary motor, coil winder
CN113678353A (en) Stator manufacturing method and stator
CN113647000A (en) Stator manufacturing method and stator
CN113557652A (en) Method for winding a concentrated coil for an electric machine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16726947

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 15570735

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20177034722

Country of ref document: KR

Kind code of ref document: A