Mitsui High-tec Incorporated

Yukinori Oba

Takahiro Shimizu

Hirokazu Arakawa

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

Manufacturing method for laminated core and manufacturing apparatus therefor

An iron-core producing method is provided that blanks iron cores from an iron strip by guiding the iron strip sequentially through an iron core-producing apparatus having a plurality of workstations. The method includes guiding, by a guide, the iron strip to a first workstation having a punch that intrudes into caulking portion-forming holes, and simultaneously forming, by the first workstation, first plural sets of caulking portions at a predetermined pitch in the iron strip. The method also includes guiding the iron strip from the first workstation to a second workstation within the iron-core producing apparatus, and forming, by the second workstation, a first iron core from the iron strip by blanking, such that tooth portions of the first iron core are disposed at lower sides of respective yoke portions.

Method of producing iron core

An iron core-producing method of the invention includes at least the step of blanking an iron core T from a strip W in such a manner that a longitudinal direction of the substantially linear iron core T is inclined relative to a direction of a width of the strip W. An iron core-producing apparatus of the invention for blanking a substantially linear iron core T from a strip W includes at least a punch disposed such that its longitudinal direction is inclined relative to a direction of a width of the strip W, and a diewhich is provided beneath the punch, and is disposed such that its longitudinal direction is inclined relative to the direction of the width of the strip W.

Growing community of inventors

Fukuoka, Japan

Yukinori Oba