Title:
積層鉄心の製造方法及び製造装置
Document Type and Number:
Japanese Patent JP6477550
Kind Code:
B2
Abstract:
A laminated iron core manufacturing method for manufacturing a laminated iron core by inserting a plurality of electrical steel strips in a superposed state to a pair of upper and lower feed rolls such that the electrical steel strips in a superposed state are fed into a die having a plurality of punching processes in sequence, and by simultaneously punching the electrical steel strips in a superposed state in the die. The method performs joining a part or all of the superposed electrical steel strips 1a and 1b together before entering the die or at an upstream stage portion of the die, after the electrical steel strips 1a and 1b are fed out from the pair of upper and lower feed rolls 2a and 2b by using feed rolls for which both upper and lower feed rolls are driven by a drive device as the pair of upper and lower feed rolls 2a and 2b.
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Inventors:
Kunihiro Senda
Masanori Uesaka
Yoshihiko Oda
Masanori Uesaka
Yoshihiko Oda
Application Number:
JP2016048149A
Publication Date:
March 06, 2019
Filing Date:
March 11, 2016
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21D28/02; B21D43/00; B21D43/09; H01F27/245; H01F41/02
Domestic Patent References:
| JP2001016832A | ||||
| JP2012231590A | ||||
| JP52039880A | ||||
| JP48039615B1 |
Attorney, Agent or Firm:
Sakai International Patent Office