Stator manufacturing method and stator
In a stator manufacturing method to manufacture a stator in which divided-core assemblies are arranged in a cylindrical shape, each of which includes a divided-core member having a teeth portion on which a coil is wound. In this method, the divided-core assemblies are inserted in the cylindrical shape into a fixed mold, resin sheets containing glass fibers or carbon fibers are disposed on coil-end portions of the cylindrically-arranged divided-core assemblies, and a slide part of a movable mold applies pressure to and molds the resin sheets, thereby combining the divided core assemblies into a single unit. The movable mold is operated to position the divided-core assemblies in place by a cylindrical part and then apply pressure to and mold the resin sheets by the slide part.
1. A stator manufacturing method for manufacturing a stator in which divided-core assemblies are arranged in a cylindrical shape, each of the divided-core assemblies including a divided-core member having a teeth on which a coil is wound, the method including:
inserting the divided-core assemblies in the cylindrical shape in a fixed mold, and
molding the cylindrically arranged divided-core assemblies by placing resin sheets containing glass fibers or carbon fibers on coil end portions of the divided-core assemblies and pressing the resin sheets with a movable mold to integrally combine the divided-core assemblies.
2. The stator manufacturing method according to claim 1 , wherein the resin sheets are subjected to pressing and molding after positioning the divided-core assemblies with the movable mold.
3. The stator manufacturing method according to claim 1 ,
wherein the resin sheets are made of thermosetting resin, and
the resin sheets are heated and hardened after the resin sheets are subjected to pressing and molding.
4. The stator manufacturing method according to claim 1 ,
wherein the resin sheets are made of thermoplastic resin, and
the resin sheets are heated and melted before the resin sheets are subjected to pressing and molding.
5. The stator manufacturing method according to claim 1 , wherein when the resin sheets are placed on the coil end portions so that the glass fibers or carbon fiber contained in the resin sheets have different lengths according to molding positions of the coil end portions.