RESIN SEALING METHOD FOR LAMINATED CORE

摘要

PROBLEM TO BE SOLVED: To provide a resin sealing method for a laminated core such that resin can be made to flow equally to runners differing in length and a failure in filling a magnet insertion hole with the resin can be prevented.SOLUTION: In a resin sealing method for a laminated core that includes sealing permanent magnets 19 with resin in a plurality of magnet insertion holes 12-14 by holding a laminated core body 16 having the permanent magnets 19 inserted into the plurality of magnet insertion holes 12-14 respectively between a metal mold 17 for resin injection and a receiving metal mold 18 arranged opposite each other, and then supplying the resin to the magnet insertion holes 12-14 from one resin reservoir pot 20 formed in the metal mold 17 for resin injection through different runners 21-23 provided at a caul plate 26 placed between the metal mold 17 for resin injection and the laminated core body 16, obstacles 41 and 42 which equalize the resin flowing in the respective runners 21-23 are provided at parts of the runners 21-23.