Coil forming apparatus and coil forming method

A coil forming apparatus that forms a band-shaped coil in a wound state, the band-shaped coil including a plurality of straight portions and side ends provided on both ends of the plurality of straight portions, the coil forming apparatus comprising:

• a coil winding jig that winds the band-shaped coil, the coil winding jig including a plurality of comb-shaped grooves on an outer periphery thereof, each of which can hold a respective one of the plurality of straight portions therein;
• a coil conveying mechanism that pivotally conveys the band-shaped coil along at least a portion of the outer periphery of the coil winding jig;
• and
• guide members that are provided in a vicinity of both ends of the coil winding jig in an axial direction, and guide the band-shaped coil in an are shape following an outer circumference of the coil winding jig while being in contact with the side end, and insert the plurality of straight portions respectively into the plurality of comb-shaped grooves by a second half portion of the pivotally conveying band-shaped coil,
• wherein the guide member has a reforming portion which deforms and reforms the band-shaped coil into an arc shape following the outer circumference of the coil winding jig, in a state sandwiching the side end of the band-shaped coil in a first half portion of the pivotally conveying band-shaped coil, and has, at least in the reforming portion, a projecting-strip pressing portion which is projected along a circumferential direction at an inner circumferential side of the guide member so as to be in sliding contact with a steady laminated part of the band-shaped coil in which a coil lamination number of the band-shaped coil is constant at a folding portion extending from the straight portion to the side end, and
• wherein the guide member is configured to include an outer-circumferential guide member of a curvature in which an inner-circumferential surface side follows an outer circumference of the coil winding jig, wherein the projecting-strip pressing portion is projected at an inner-circumferential surface of the outer-circumferential guide member.