Device for manufacturing rotor core and method for manufacturing rotor core

A device for manufacturing a rotor core, the device comprising:

• a first mold including a fitting recess that fits and holds a laminated iron core in which a magnet is inserted into a magnet insertion hole or a laminated iron core in which a magnet and an exterior member are mounted on an outer circumferential side;
• a second mold that is engaged with the first mold and clamps and seals the laminated iron core together with the first mold;
• a resin injection unit that is provided to the first mold or the second mold, and injects a resin material into the magnet insertion hole or between the exterior member and the laminated iron core by using a molding machine;
• and
• a magnet positioning and holding mechanism that positions and holds the magnet in a state of being fit into the fitting recess of the first mold;
• wherein the magnet positioning and holding mechanism is configured to position and hold the magnet by pulling the magnet toward an end side of the laminated iron core facing the second mold without pulling or pushing the magnet towards a mold surface that forms the fitting recess of the first mold, such that an end of the magnet is spaced apart from the mold surface that forms the fitting recess of the first mold.