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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2017/145865
Kind Code:
[Problem] To provide a method for manufacturing a spiral coil according to which a thin spiral coil can be manufactured using an electric press processing machine. [Solution] A method for manufacturing a spiral coil is characterized by including: a first step in which a material M is punched into a coil shape using a first upper die convex part 41a and a semiprocessed coil 100' is pressed into a first upper die concave part 41b; a second step in which the semiprocessed coil 100' that has been pressed into the first upper die concave part 41b is pressed out onto a sheet-shaped member F; and a third step in which the semiprocessed coil 100' on the sheet-shaped member F is pressed by a second upper mold part 42, thereby completing a coil 100.

MURATA, Chikara (39-32, Komatsubara 1-chome, Zama-sh, Kanagawa 02, 〒2520002, JP)
Application Number:
Publication Date:
August 31, 2017
Filing Date:
February 14, 2017
Export Citation:
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HODEN SEIMITSU KAKO KENKYUSHO CO., LTD. (3110, Iiyama Atsugi-sh, Kanagawa 13, 〒2430213, JP)
International Classes:
B21D28/00; B21D28/20; B21D53/00; H01F41/04
Attorney, Agent or Firm:
KOYAMA, Takashi et al. (AZUSA PATENT OFFICE, Ueno Suzuki Bldg. 7th Floor 16-3, Ueno 3-chome, Taito-k, Tokyo 05, 〒1100005, JP)
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