Method and apparatus for inserting undulated coil assemblies in the slots of cores of dynamoelectric machines

Patent metadata

Field	Value
Publication number	US-2018233999-A1
Application number	US-201615746365-A
Country	US
Kind code	A1
Filing date	Jul 8, 2016
Priority date	Jul 20, 2015
Publication date	Aug 16, 2018
Grant date	—

Abstract

A method and apparatus for inserting an undulated coil assembly ( 90 ) in the hollow core ( 101 ) of a dynamoelectric machine, the coil having a planar configuration with adjacent superimposed linear portions (LI) extending parallel to each other and a plurality of turn portions (T) connecting the linear portions (LI), comprising positioning at least a first coil portion ( 90′ ) of the coil assembly around a support member ( 200 ); aligning a guide assembly ( 302,303,304 ) with respect to the end faces and the slots ( 102 ) of the core ( 101 ); engaging the superimposed linear portions (LI) along guide surfaces that form a passage ( 301 ) during the feeding along the guide assembly ( 302,303,304 ); feeding the first coil portion ( 90 ) from the support member ( 200 ) along the guide assembly ( 302,303,304 ) to change orientation of adjacent superimposed linear portions (LI) being fed and to insert the adjacent superimposed linear portions being fed in the slots ( 102 ); relatively moving the core ( 101 ) with respect to the guide assembly ( 302,303,304 ) to position the slots ( 102 ) for receiving the superimposed linear portions (LI). A hollow core of a dynamoelectric machine wound with an undulated coil assembly comprising superimposed linear portions positioned at different pitch distances (PT 1 ,PT 2 ) in two adjacent slots ( 102 ).

First claim

1 - 11 . (canceled)

12 . A method for inserting an undulated coil assembly in the slots of a hollow core of a dynamoelectric machine, the coil assembly having adjacent superimposed linear portions (LI) extending parallel to each other and a plurality of turn portions (T) connecting the linear portions (LI), the method comprising the steps of:
positioning at least a first coil portion of the coil assembly around a support member; aligning a guide device with respect to the end faces and the slots of the core; feeding the first coil portion from the support member along the guide device to insert the adjacent superimposed linear portions (LI) in the slots; engaging the superimposed linear portions (LI) along at least one guide surface that forms a passage of the guide device during the feeding along the guide device to change the angular orientation of adjacent superimposed linear portions (LI) with respect to the radiuses of the slots during the insertion in the slots; relatively moving the core with respect to the guide assembly to position the slots for receiving the superimposed linear portions (LI).

13 . The method of claim 12 further comprising:
engaging superimposed linear portions (LI) of a tail end of the first coil portion in slots of the support member;
engaging superimposed linear portions (LI) of the first coil portion with a feed member located between the support member and the slots; and
synchronizing the movement of the support member, the movement of the feeding and the relative movement of the core.

14 . The method of claim 12 further wherein the positioning, the aligning, the feeding, and the relative moving of the core are repeated to orient and insert in the slots superimposed linear portions (LI) of at least a second coil portion of the coil assembly; wherein the second coil portion is provided with a different pitch distance (PT 2 ) for separating the superimposed linear portions with respect to the pitch distance (PT 1 ) for separating superimposed linear portions of the first coil portion.

15 . The method of claim 12 wherein the angle of the angular orientation is reduced during the insertion in the slots.

16 . Apparatus for inserting an undulated coil assembly in the in the slots of a hollow core of a dynamoelectric machine, the coil assembly having adjacent superimposed linear portions (LI) extending parallel to each other and a plurality of turn portions (T) connecting the linear portions (LI), the apparatus comprising:
a support member where at least a first coil portion of the coil assembly is positioned around an external surface of the support member; a guide device aligned with respect to the end faces and the slots of the core; a feeder that feeds the first coil portion from the support member along the guide assembly to insert the adjacent superimposed linear portions (LI) in the slots; a passage of the guide assembly comprising at least one guide surface where the superimposed linear portions (LI) are engaged to change the angular orientation of the superimposed linear portions (LI) with respect to the radiuses of the slots during the insertion in the slots; and means for relatively moving the core with respect to the guide device to position the slots for receiving the superimposed linear portions (LI).

17 . The apparatus of claim 16 wherein superimposed linear portions (LI) of a tail end of the first coil portion are engaged in slots of the support member and further superimposed linear portions (LI) of the first coil portion are engaged by a feed member positioned between the support member and the slots; and wherein the movement of the support member is synchronized with the movement of the feeder and the relative movement of the core.

18 . The apparatus of claim 16 further comprising:
a second support member where a second coil portion is positioned around an external surface of the second support member;
a second guide device aligned with respect to the end faces and the slots of the core;
a second feeder that feeds a portion of the second coil portion from the second support member along the second guide device to change orientation of the superimposed linear portions being fed and to insert the superimposed linear portions (LI) being fed in the slots.

19 . The apparatus of claim 16 wherein a terminal portion of the guide device is removable to accomplish reorientation and insertion of superimposed linear portions (LI) in the slots.

20 . The apparatus of claim 16 wherein the at least one guide surface is configured to reduce the angle of the angular orientation during the insertion in the slots.

21 . A hollow core of a dynamoelectric machine wound with an undulated coil assembly comprising:
adjacent first superimposed linear portions (LI) extending parallel to each other in a more external radial position of a first slot of the core; second superimposed linear portions (LI) extending parallel to each other positioned in a more internal radial position of the first slot of the core; third superimposed linear portions (LI) extending parallel to each other in a more external radial position of a second slot of the core; fourth superimposed linear portions (LI) extending parallel to each other positioned in a more internal radial position of the second slot; wherein the first and second slots are adjacent, and the first superimposed linear portions (LI) and the third superimposed linear portions (LI) have a first pitch distance (PT 1 ) that separates the first superimposed linear portions (LI) from the third superimposed linear portions (LI), and the second superimposed linear portions (LI) and the fourth superimposed linear portions (LI) have a second pitch distance (PT 2 ) that separates the second superimposed linear portions (LI) from the fourth superimposed linear portions (LI); wherein the first pitch distance (PT 1 ) is greater than the second pitch distance (PT 2 ).

22 . The core of claim 21 being characterized in that the first superimposed linear portions (LI) and the third superimposed linear portions (LI) belong to a set SI of multiple superimposed linear portions positioned in the first slot and the second slot and having the pitch distance (PT 1 ), and the second superimposed linear portions (LI) and the fourth superimposed linear portions (LI) belong to a second set S 2 of multiple superimposed linear portions positioned in the first slot and the second slot and having the pitch distance (PT 2 ).

Assignees

• Atop Spa

Inventors

• Ponzio Massimo
• Corbinelli Rubino
• Rossi Federico

Classifications

• H02K15/066 Primary

  inserted perpendicularly to the axis of the slots or inter-polar channels · CPC title

• H02K3/12

  arranged in slots · CPC title

• H02K15/024

  Electricity · mapped topic

• H02K15/021

  Magnetic cores · CPC title

• Y10T29/49073

  by assembling coil and core · CPC title