Conductor molding device and method

Abstract

The invention provides a conductor molding device and method. A coil-end molding device (20) includes a first molding die (21) and a second molding die (22) which approach each other along an X-direction and mold an edgewise bend part and a flatwise bend part on a lead wire part (11), and a third molding die (23) which approaches the second molding die (22) along the X-direction and molds an edgewise bend part in coordination with the second molding die (22) on a loose end section of the lead wire part (11). The second molding die (22) is configured so as to be capable of moving towards and away from the first molding die (21) along a Y-direction which differs from the X-direction, and the third molding die (23) is configured so as to be capable of moving towards and away from the second molding die (22) along the Y-direction which differs from the X-direction.

Description

technical field [0001] The present invention relates to a wire forming device and method for forming a first bending portion bent in a first bending direction and a second bending portion bent in a second bending direction perpendicular to the first bending direction for a wire. Background technique [0002] Conventionally, as a coil constituting a stator of a rotating electric machine, a coil formed by winding a wire material (flat wire) having a rectangular cross section and having a lead portion (lead wire) at one end is known (for example, refer to Patent Document 1). The coil is attached to the stator core via an insulating member, and the end of the lead is electrically connected to the end of the corresponding other coil on the opposite side to the lead. In addition, as coils of rotating electrical machines, coils formed by inserting approximately U-shaped conductors, that is, conductor segments, into slots formed in stator cores and rotor cores and welding the conduc...

AI Technical Summary

Problems solved by technology

Therefore, there is a fear that the lead part is dragged and deformed by the die due to friction between the lead part and the die when the forming dies are separated from each other, thereby deteriorating the forming accuracy.

In addition, not only for a lead wire having a rectangular (rectangular) cross section, but also for a lead wire having a square, circular, or elliptical cross section, a pair of molding dies are used to perform bending processing toward the first bending direction and a direction that is aligned with the second bending direction. In the case of bending in the second bending direction perpendicular to the first bending direction, such a deterioration in molding accuracy may also occur.

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