Arrangement for the insertion of coils in a stator

An arrangement for the insertion of coils in a stator stack, said arrangement comprising:

• a container (2) supporting a plurality of stationary wire-guide blades (6) arranged along a contour thereof,
• a moving wire-insertion spider (3) having a central axis (C) and supporting a plurality of moving wire-guide blades (7) such that said stationary blades and moving blades are parallel, said moving spider being slidable with respect to said container (2), wherein said stationary wire-guide blades and, said moving wire-guide blades are each provided, at least partially, with a groove (20) extending in the outer surface of the blade in a direction that is parallel to a length direction of said blade, wherein said spider comprises a blade stack guide member provided with a rigid substantially cylindrical body (22) having a plurality of parallel recesses (10) adapted to accommodate respective stationary and moving blades, wherein said recesses (10) are each provided with a respective rib (19) extending parallel to a length direction of the respective recesses, said ribs face an interior of the respective recesses and are adapted to engage said grooves (20) when said blade stack guide is inserted into said wire-guide blades (6, 7), wherein said grooves (20) are arranged in pairs on said stationary wire-guide blades and said moving wire-guide blades and are symmetrical with respect to a respective vertical midplane (S) passing through said central axis (C) of said moving spider, and wherein at least a contact surface (23) between said grooves and said ribs is plane and oriented orthogonally (H) to a radius of said spider passing through said central axis and the respective groove.

An arrangement for the insertion of coils in a stator stack, said arrangement comprising:

• a container (2) supporting a plurality of stationary wire-guide blades (6) arranged along a contour thereof,
• a moving wire-insertion spider (3) having a central axis (C) and supporting a plurality of moving wire-guide blades (7) such that said stationary blades and moving blades are parallel, said moving spider being slidable with respect to said container (2),
• wherein said stationary wire-guide blades and said moving wire-guide blades are each provided, at least partially, with a groove (20) extending in the outer surface of the blade in a direction that is parallel to a length direction of said blade,
• wherein said spider comprises a blade stack guide member provided with a rigid substantially cylindrical body (22) having a plurality of parallel recesses (10) adapted to accommodate respective stationary and moving blades,
• wherein said recesses (10) are each provided with a respective rib (19) extending parallel to a length direction of the respective recesses, said ribs face an interior of the respective recesses and are adapted to engage said grooves (20) when said blade stack guide is inserted into said wire-guide blades (6, 7), wherein said grooves (20) are arranged in pairs on said stationary wire-guide blades and said moving wire-guide blades and are symmetrical with respect to a respective vertical midplane (S) passing through said central axis (C) of said moving spider,
• wherein said recesses (10) are provided with respective pairs of said ribs (19) extending parallel to the axis of said blade stack guide and facing the interior of the respective recess, in which said pairs of ribs are adapted to engage respective pairs of said grooves (20) when said blade stack guide is inserted into said wire-guide blades (6, 7), and
• wherein at least a contact surface (23) between said grooves and said ribs is plane and oriented orthogonally (H) to a radius of said spider passing through said central axis and the respective groove.

An arrangement for the insertion of coils in a stator stack, said arrangement comprising:

• a container (2) supporting a plurality of stationary wire-guide blades (6) arranged along a contour thereof,
• a moving wire-insertion spider (3) having a central axis (C) and supporting a plurality of moving wire-guide blades (7) such that said stationary blades and moving blades are parallel, said moving spider being slidable with respect to said container (2), wherein said stationary wire-guide blades and said moving wire-guide blades are each provided, at least partially, with a groove (20) extending in the outer surface of the blade in a direction that is parallel to a length direction of said blade, wherein said spider comprises a blade stack guide member provided with a rigid substantially cylindrical body (22) having a plurality of parallel recesses (10) adapted to accommodate respective stationary and moving blades, wherein said recesses (10) are each provided with a respective rib (19) extending parallel to a length direction of the respective recesses, said ribs face an interior of the respective recesses and are adapted to engage said grooves (20) when said blade stack guide is inserted into said wire-guide blades (6, 7), wherein said grooves (20) are arranged in pairs on said stationary wire-guide blades and said moving wire-guide blades and are symmetrical with respect to a respective vertical midplane (S) passing through said central axis (C) of said moving spider, wherein said recesses (10) are provided with respective pairs of ribs (19) extending parallel to the axis of said blade stack guide and facing the interior of the respective recess, in which said pairs of ribs are adapted to engage respective pairs of said grooves (20) when said blade stack guide is inserted into said wire-guide blades (6, 7),
• wherein said ribs and said grooves are oriented and sized so as to be capable of preventing said wire-guide blades (6, 7) from at least one of flexing and distorting when they are mutually engaged, and wherein at least a contact surface (23) between said grooves and said ribs is plane and oriented orthogonally (H) to a radius of said spider passing through said central axis and the respective groove.