Film peeling method and film peeling device for film-coated flat wire

A film peeling method for a film-coated flat wire performed by

• a film peeling device including:
• a rotational holder that can rotationally convey the film-coated flat wire in a perpendicular direction to a rotational axis of the film-coated flat wire;
• a positioning mechanism that positions the film-coated flat wire in a longitudinal direction;
• and
• a working section that is provided in plural and aligned at specified intervals to peel an end portion of the film-coated flat wire,
• the method comprising:
• cutting the film-coated flat wire to a specified length;
• holding the film-coated flat wire that is cut in the specified length in advance by the rotational holder;
• rotationally conveying the film-coated flat wire that is held in the holding step by the rotational holder in the perpendicular direction to the rotational axis;
• positioning the conveyed film-coated flat wire by the positioning mechanism;
• and
• peeling the end portion by the working section,
• wherein the positioning and the peeling are each performed at least three times, a first surface that includes one side of an outer periphery of a cut surface that is formed when the film-coated flat wire is cut perpendicularly to the longitudinal direction, first positioning includes positioning the first surface at a 45 degree incline relative to a conveyance surface on which the film-coated flat wire is conveyed by the rotational holder, first working includes peeling the end portion of the film-coated flat wire in the working section to form a second surface, second positioning includes positioning by which the first surface is inclined for 45 degrees to the conveyance surface by the rotational holder, second working includes peeling the end portion of the film-coated flat wire in the working section to form a third surface that is perpendicular to the second surface that is formed in the first working, third positioning includes positioning by which a lateral surface of the film-coated flat wire is in parallel with the conveyance surface by the rotational holder, and third working includes peeling the end portion of the film-coated flat wire in the working section to form a fourth surface that is angled at 45 degrees with respect to the second surface and the third surface,
• wherein the first, second, and third workings are each performed at least three times.