Manufacturing device and manufacturing method for laminated core

A manufacturing method for a laminated core including:

• a laminated core body that has a shaft hole at a center and has a plurality of magnet insertion holes provided at intervals in a circumferential direction in an outer circumferential portion surrounding the shaft hole;
• and a plurality of magnet pieces, each of the magnet pieces being fixed by resin and inserted in a respective one of the plurality of magnet insertion holes, the manufacturing method for the laminated core comprising:
• preparing a tray that includes a cylindrical section having a resin arrangement hole extending vertically and a brim section protruding radially outward from a lower end of the cylindrical section and in which the brim section is formed with a plurality of resin flow path grooves extending radially from the resin arrangement hole and a plurality of gates, each of which extends upward from a tip of a respective one of the plurality of resin flow path grooves;
• mounting the laminated core body on the tray by inserting the cylindrical section in the shaft hole and bringing the brim section into contact with the outer circumferential portion from below, and thereafter inserting the magnet pieces in the respective magnet insertion holes;
• placing the tray, on which the laminated core body is mounted, on a lower plate arranged under an upper plate, on which a vertically movable plunger is mounted, and arranging a resin tablet, which is a molded body of the resin, in the resin arrangement hole;
• and
• bringing the upper plate into contact with the laminated core body, which is mounted on the tray on the lower plate, from above in a state where the plunger is inserted in the resin arrangement hole, and thereafter filling the plurality of magnet insertion holes with the resin, which is extruded from the resin arrangement hole by lowering the plunger and pressing the resin tablet through the plurality of resin flow path grooves and the plurality of gates.