Manufacturing Method Of Laminated Iron Core, Manufacturing Apparatus Of Laminated Iron Core, Laminated Iron Core, And Rotary Electric Machine

Abstract: This laminated iron core manufacturing method comprises: a step for pressing electromagnetic steel sheets each having a coating containing an adhesive agent which exhibits adhesiveness via heating provided to a sheet surface thereof with a mold (2) and converting the same into unit iron cores (1); and a step for layering the unit iron cores (1) pressed with the mold (2), heating a plurality of partial regions of the sheet surface of the unit iron core (1) of the uppermost layer, and partially bonding the same to the unit iron core (1) of a lower layer thereto in the plurality of regions. Thereby, pressing machining and laminating are performed substantially simultaneously as a series of operations, and it is possible to increase the efficiency of laminated iron core manufacturing without increasing person-hours.

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