| 摘要 |
PURPOSE: To obtain a coil molding method in which a wedge is not required, in which the cost of components is reduced and in which the manufacturing process is simplified by a method wherein a gap is formed between the mold face of a mold and the outer circumference of a core, a resin material is fed over the whole outer circumferential face of the core and the resin material is then made to flow into a core slot. CONSTITUTION: A rotor 3 in which a coil 8 has been wound on a core 4 is set at the inside of molds 1, 2. Inner circumferential faces of mold faces 1a, 1b for the molds are formed in such a way that a gap (s) can be formed between themselves and the outer circumferential face of the core 4. A resin material is injected from an injection port 6 which is formed on one end-part side in the axial-line direction of the core of an upper side piece 1 for the mold. When the resin material is injected, it first flows into the gap (s), and then the resin material flows into toward the inside of a core slot from the outer circumferential side. Due to the inflow of the resin material and the resin pressure, the coil is pushed toward the bottom part of the core slot, and the resin material is cured after the filling. Thereby, the coil 8 is fixed in a state that it has been pushed into the core slot. |
