Invention Grant
- Patent Title: Manufacturing method for laminated iron core
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Application No.: US16318412Application Date: 2017-01-09
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Publication No.: US11355282B2Publication Date: 2022-06-07
- Inventor: Hironobu Okudaira , Hideo Horii , Kenichi Shindo
- Applicant: Kuroda Precision Industries Ltd.
- Applicant Address: JP Kawasaki
- Assignee: Kuroda Precision Industries Ltd.
- Current Assignee: Kuroda Precision Industries Ltd.
- Current Assignee Address: JP Kawasaki
- Agency: Dority & Manning, P.A.
- International Application: PCT/JP2017/000359 WO 20170109
- International Announcement: WO2018/127983 WO 20180712
- Main IPC: H01F41/02
- IPC: H01F41/02 ; H01F3/04 ; B21D28/00 ; H02K15/02

Abstract:
A manufacturing method for a laminated iron core includes conveying a sheet steel strip in an intermittent manner in a lift up state, with upward movement of the strip being limited by a guiding member provided on a lower holder; punching an outer shape of each iron core laminae; and applying adhesive agent to a surface of the strip before the punching. The adhesive agent is applied in a state in which a pilot pin is inserted in a pilot hole of the strip and when the strip is about to be pressed against or is being pressed against the die plate by a stripper provided on an upper holder. After application of the adhesive agent, the strip is returned to the lift up state by raising the upper holder, with a lifter and the stripper plate being in abutment with the lower and upper surfaces of the strip, respectively.
Public/Granted literature
- US20190259531A1 Manufacturing Apparatus and Manufacturing Method for Laminated Iron Core Public/Granted day:2019-08-22
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