Winding frame for winding machine and method for mounting coil

Abstract

To provide a spool for a coil winding device capable of preventing poor insulation caused by a leakage of coil wires without initially inserted coil wires staying at the vicinity of slot openings. A spool for a coil winding device of this invention includes a plurality of coil winding surfaces increased stepwise in diameter from the bottom upward in a state where the spool is disposed on the coil winding device. The spool includes a front spool part and a rear spool part, which are placed at a distance from each other so that each turn of coil has a length corresponding to arbitrary lamination thickness of the stator core. The plurality of coil winding surfaces includes a coil winding surface corresponding to the outermost coil that is formed so that a portion in a radial pattern from the vicinity of a portion corresponding to a central axis of the stator core towards an opening of the slot in which each coil is loaded is extended at least to a position corresponding to a core back where the roots of the teeth outside the slot of the stator core are connected.

Description

technical field [0001] The present invention relates to a bobbin of a winding device for forming a coil and a coil mounting method. The coil mounting method uses the coil formed by the bobbin and attaches the coil to a stator core of a motor using a coil insertion device. Background technique [0002] At present, there is known a coil winding device (for example, refer to Patent Document 1), which has: a coil insertion jig having a plurality of blades arranged in a ring shape; a front coil former corresponding to the above coil It is arranged by inserting a jig, and has a plurality of winding sections whose diameter is expanded in steps from the bottom to the top; the rear bobbin is arranged opposite to the front bobbin, and has a plurality of winding sections similar to the above; the flyer , the flyer winds the electric wires onto the winding sections of the pair of bobbins sequentially from below to form a coil, and the coil winding device makes the coils formed on the wi...

AI Technical Summary

Problems solved by technology

[0004] However, in the coil winding device described in the aforementioned Patent Document 1, in particular, since the coil tension at the time of insertion increases along with the increase in the duty ratio of the coil to the slit, in the rectangular coil, the torsion The wire inserted into the gap of the iron core at the beginning stays near the opening of the gap

Due to this operation, the initially inserted coil wire leaks from the wedge covering the opening of the slit, and the coil wire directly interferes with the iron core, causing damage to the wire coating and insulation failure. Therefore, it is necessary to eliminate this problem.

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