| 摘要 |
PROBLEM TO BE SOLVED: To provide a die for manufacturing laminated thin sheet transformer core with which a high-performance laminated transformer core which suppresses the leakage fluxes can be manufactured with high productivity. SOLUTION: This die for manufacturing laminated transformer core is constituted of a plurality of trimming punches 21 which can be set appropriately to positions and off positions and trim portions having different shapes, I- and U-shaped core punches 24, 26 and 29 which punch different kinds of cores by pressing the common portion of the cores, and the die 34 of the punches 24, 26 and 29 which houses, laminates, and blocks the different kinds of punched cores. Since this die can continuously efficiently block the cores having different shapes, this die can manufacture high-performance transformer cores by securing the conventional productivity.
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