Apparatus for winding poles of cores of dynamo electric machines
An apparatus for winding coils of a wire conductor around radial poles of a core of a dynamo electric machine component may include a wire dispenser arm which rotates about a radial pole at a time to dispense the wire conductor forming turns. A first wire guide is positioned at a first axial end from the radial pole being wound and moved along a direction parallel to the radial direction of the radial pole to form a coil. A second and third wire guide are positioned respectively, in a first and second slot adjacent to the radial pole at opposite sides to form at least a respective passageway for the wire conductor. The apparatus includes first and second guide portions that extend toward and are coplanar to each other in order to at least partially close each passageway during winding of the radial pole.
1 . An apparatus ( 1 ) for winding a plurality of coils (B) of a wire conductor (W) around respective radial poles ( 10 c ) of a core ( 10 ) of a dynamo electric machine component arranged according to respective radial directions ( 110 c ), the coils (B) being formed by a plurality of turns (S) of the wire conductor (W), each of the plurality of turns (S) comprising two opposite longitudinal stretches, each of the two opposite longitudinal stretches being positioned in a respective slot ( 10 a , 10 b ), and the two opposite longitudinal stretches of each of the turns being positioned adjacent to respective axial ends (A, A′) of the radial pole ( 10 c ), the apparatus ( 1 ) comprising:
a wire dispenser arm ( 11 ) configured to rotate about one of the radial poles ( 10 c ) at a time to dispense the wire conductor (W) forming the turns (S);
a first wire guide ( 32 ) configured to be selectively positioned at a first axial end (A) of the radial pole ( 10 c ) and to move, during winding, along a moving direction ( 132 a , 132 b ) parallel to the radial direction ( 110 c ) of the radial pole ( 10 c ) to assist in forming the respective coil (B);
a second wire guide ( 36 ) configured to be positioned and moved at a first slot ( 10 a ) adjacent to the radial pole ( 10 c ) undergoing winding;
a third wire guide ( 37 ) configured to be positioned and moved at a second slot ( 10 b ) adjacent to the radial pole ( 10 c ) undergoing winding, wherein the second wire guide ( 36 ) and the third wire guide ( 37 ) are arranged relative to the first wire guide ( 32 ) to define at least one respective passageway ( 38 a , 38 b , 38 ′ a , 38 ′ b ) through which the wire conductor (W) passes during winding;
wherein the first, second and third wire guides ( 32 , 36 , 37 ) are each configured to move independently of one another; and
wherein the second wire guide ( 36 ) includes at least one first guide portion ( 35 a , 35 b ), and the third wire guide ( 37 ) includes at least one second guide portion ( 35 ′ a , 35 ′ b ), each of the first and second guide portions being configured to protrude toward the first wire guide ( 32 ),
the first and second guide portions ( 35 a , 35 b , 35 ′ a , 35 ′ b ) include portions that each extend toward and are coplanar with one another, partially overlapping the radial pole ( 10 c ) when viewed in an axial direction, and being configured to at least partially close the respective passageway ( 38 a , 38 b , 38 ′ a , 38 ′ b ) during winding of the radial pole ( 10 c ),
such that the wire conductor (W) is prevented from withdrawing into the the respective passageway ( 38 a , 38 b ) when moving from an edge ( 36 a ) of the second wire guide ( 36 ) to an edge ( 32 a ) of the first wire guide ( 32 ), or from the edge ( 32 a ) of the first wire guide ( 32 ) to an edge ( 37 a ) of the third wire guide ( 37 ), due to a presence of the first and second guide portions ( 35 a , 35 b , 35 ′ a , 35 ′ b ).
2 . The apparatus according to claim 1 , wherein the first and second guide portions ( 35 a , 35 b , 35 ′ a , 35 ′ b ) extend from at least one of the second and third wire guides ( 36 , 37 ) towards the first wire guide ( 32 ).
3 . The apparatus according to claim 1 , wherein the first and second guide portions ( 35 a , 35 b , 35 ′ a , 35 ′ b ) extend from at least one of the second and third wire guides ( 36 , 37 ) in a direction substantially orthogonal to the radial direction ( 110 c ) of the radial pole ( 10 c ).
4 . The apparatus according to claim 1 , wherein the at least one respective passageway forms first passageways, wherein first guide portions ( 35 a , 35 b ) extend from the second wire guide ( 36 ) and the third wire guide ( 37 ), respectively, and are arranged to at least partially close the respective first passageways ( 38 a , 38 b ) between the first wire guide ( 32 ) and the second wire guide ( 36 ), and between the first wire guide ( 32 ) and the third wire guide ( 37 ), on opposite sides (L, L′) of the radial pole ( 10 c ).
5 . The apparatus according to claim 1 , wherein the least one first guide portion ( 35 a , 35 b ) extends from at least one of the second and third wire guides ( 36 , 37 ) and at least partially closes a first passageway ( 38 a , 38 b ) of the at least one respective passageway between the first wire guide ( 32 ) and the second wire guide ( 36 ), or between the first wire guide ( 32 ) and the third wire guide ( 37 ),
wherein a fourth wire guide ( 32 ′) is provided, configured to be selectively positioned at a second axial end (A′) of the radial pole ( 10 c ), opposite a first axial end (A) of the radial pole, and movable during winding along a moving direction ( 132 a , 132 b ) parallel to the radial direction ( 110 c ) of said radial pole ( 10 c ) to form the coil (B),
and wherein at least one second guide portion ( 35 ′ a , 35 ′ b ) extends from at least one of the second and third wire guides ( 36 , 37 ) and at least partially closes a second passageway ( 38 ′ a , 38 ′ b ) of the at least one passageway between the fourth wire guide ( 32 ′) and the second wire guide ( 36 ), or between the fourth wire guide ( 32 ′) and the third wire guide ( 37 ).
6 . The apparatus according to claim 4 , wherein first guide portions ( 35 a , 35 b ) extend from the second and third wire guides ( 36 , 37 ), respectively, toward the first wire guide ( 32 ) and at least partially close, the first passageways ( 38 a , 38 b ) between the first wire guide ( 32 ) and the second wire guide ( 36 ), and between the first wire guide ( 32 ) and the third wire guide ( 37 ), and
wherein the second guide portions ( 35 ′ a , 35 ′ b ) extend from the second and third wire guides ( 36 , 37 ), respectively, toward the a fourth wire guide ( 32 ′) and at least partially close, second passageways ( 38 ′ a , 38 ′ b ) of the at least one passageway between the fourth wire guide ( 32 ′) and the second wire guide ( 37 ), and between the fourth wire guide ( 32 ′) and the third wire guide ( 37 ).
7 . A method for winding a plurality of coils (B) of a wire conductor (W) around respective radial poles ( 10 c ) of a core ( 10 ) of a dynamo electric machine component arranged according to respective radial directions ( 110 c ), the coils (B) being formed by a plurality of turns (S) of a wire conductor (W), each of the plurality of turns (S) comprising two opposite longitudinal stretches, each of the two opposite longitudinal stretches being positioned in a respective slot ( 10 a , 10 b ), and the two opposite longitudinal stretches of each of the plurality of turns being positioned adjacent to respective axial ends (A, A′) of the radial pole ( 10 c ); the method comprising:
forming the turns (S) of the coil (B) by rotating a wire dispenser arm ( 11 ) about the respective radial poles ( 10 c ) to dispense the wire conductor (W);
selectively positioning a first wire guide ( 32 ) at a first axial end (A) of the radial pole ( 10 c ) being wound and moving the first wire guide ( 32 ) along a moving direction ( 132 a , 132 b ) parallel to the radial direction ( 110 c ) of the radial pole ( 10 c ) being wound;
positioning and moving a second wire guide ( 36 ) in a first slot ( 10 a ) adjacent to the radial pole ( 10 c ) being wound;
positioning and moving a third wire guide ( 37 ) in a second slot ( 10 b ) adjacent to the pole ( 10 c ) being wound, the second and the third wire guides ( 36 , 37 ) being positioned relative to the first wire guide ( 32 ) so as to form at least one respective passageway ( 38 a , 38 b , 38 ′ a , 38 ′ b ) for the wire conductor (W);
wherein the first, second and third wire guides ( 32 , 36 , 37 ) are configured to move independently of one another;
and further comprising:
at least partially closing at least one of the respective passageways ( 38 a , 38 b , 38 ′ a , 38 ′ b ) during winding of the radial pole ( 10 c ) by at least first and second guide portions ( 35 a , 35 b , 35 ′ a , 35 ′ b ), the first and second guide portions ( 35 a , 35 b , 35 ′ a , 35 ′ b ) including portions that each extend toward one another and being coplanar and arranged to protrude respectively from the second and the third wire guide ( 36 , 37 ) toward the first wire guide ( 32 ), and partially overlapping the radial pole ( 10 c ) when viewed in an axial direction,
such that the wire conductor (W) is prevented from withdrawing into the passageways ( 38 a , 38 b , 38 ′ a , 38 ′ b ) when moving from an edge ( 36 a ) of the second wire guide ( 36 ) to an edge ( 32 a ) of the first wire guide ( 32 ), or from the edge ( 32 a ) of the first wire guide ( 32 ) to an edge ( 37 a ) of the third wire guide ( 37 ), due to a presence of the first and second guide portions ( 35 a , 35 b , 35 ′ a , 35 ′ b ).
8 . The method according to claim 7 , wherein the step of at least partially closing is carried out by at least a first and a second guide portion ( 35 a , 35 b , 35 ′ a , 35 ′ b ) protruding from at least one of the second and third wire guides ( 36 , 37 ) and oriented towards the first wire guide ( 32 ).
9 . The method according to claim 7 , wherein the step of at least partially closing is carried out by the first and second guide portions ( 35 a , 35 b , 35 ′ a , 35 ′ b ) protruding from at least one of the second and third wire guides ( 36 , 37 ) and oriented along a direction substantially orthogonal to the radial direction ( 110 c ) of the radial pole ( 10 c ) being wound.
10 . The method according to claim 7 , wherein the at least one respective passageway forms first passageways, further comprising at least partially closing first passageways ( 38 a , 38 b ) defined at opposite sides (L, L′) of the pole ( 10 c ) being wound, respectively, between the first wire guide ( 32 ) and the second wire guide ( 36 ), and between the first wire guide ( 32 ) and the third wire guide ( 37 ), by the first guide portions ( 35 a , 35 b ) protruding from the second wire guide ( 36 ) and the third wire guide ( 37 ), respectively.
11 . The method according to claim 7 , further comprising selectively positioning a fourth wire guide ( 32 ′) at a second axial end (A′) opposite to the first axial end (A) of the radial pole ( 10 c ) being wound, wherein the at least one respective passageway forms first passageways, and moving the fourth wire guide ( 32 ′) along the radial direction ( 110 c ) of the radial pole ( 10 c ) being wound, and further comprising:
at least partially closing the first passageway ( 38 a , 38 b ) defined between the first wire guide ( 32 ) and the second wire guide ( 36 ), or between the first wire guide ( 32 ) and the third wire guide ( 37 ), by at least the first guide portion ( 35 a , 35 b ) protruding from at least one of the second wire guide ( 36 ) and the third wire guide ( 37 );
at least partially closing at least a second passageway ( 38 ′ a , 38 ′ b ) defined between the fourth wire guide ( 32 ′) and the second wire guide ( 36 ), or between the fourth wire guide ( 32 ′) and the third wire guide ( 37 ), by the second guide portion ( 35 ′ a , 35 ′ b ) protruding from at least one of the second wire guide ( 36 ) and the third wire guide ( 37 ).
12 . The method according to claim 10 , further comprising steps of:
at least partially closing the first passageways ( 38 a , 38 b ) by the respective first guide portion ( 35 a , 35 b ) protruding from the second and the third wire guide ( 36 , 37 ) towards the first wire guide ( 32 );
wherein the at least one respective passageway forms second passageways,
at least partially closing, the second passageways ( 38 ′ a , 38 ′ b ) by the respective second guide portion ( 35 ′ a , 35 ′ b ) protruding from the second and the third wire guide ( 36 , 37 ) towards the fourth wire guide ( 32 ′).