A laminated core manufacturing method for performing rotational lamination by conveying a band-shaped material to be stamped 10 to a die apparatus to successively perform presswork, stamping out and dropping manufactured core pieces 20 into a blanking die 21 and rotating the blanking die 21 by a predetermined angle, in which a positioning mechanism for the blanking die 21, which has rotational lamination guide pins and rotational lamination guide holes 23-30, is disposed inward from both ends in a width direction of the band-shaped material to be stamped 10 and temporary holes 13-16 for the rotational lamination guide pins to be inserted are provided in the band-shaped material to be stamped 10. The structure allows downsizing of the die apparatus.