JPS5772580A - Manufacture of bobbin for sewing machine - Google Patents

Manufacture of bobbin for sewing machine

Info

Publication number
JPS5772580A
JPS5772580A JP14605780A JP14605780A JPS5772580A JP S5772580 A JPS5772580 A JP S5772580A JP 14605780 A JP14605780 A JP 14605780A JP 14605780 A JP14605780 A JP 14605780A JP S5772580 A JPS5772580 A JP S5772580A
Authority
JP
Japan
Prior art keywords
bobbin
manufacture
welding
mounting hole
metal plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14605780A
Other languages
Japanese (ja)
Inventor
Ryoshiro Sukai
Seisaburo Aida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOUWA SEISAKUSHO KK
TOWA SEISAKUSHO KK
Original Assignee
TOUWA SEISAKUSHO KK
TOWA SEISAKUSHO KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TOUWA SEISAKUSHO KK, TOWA SEISAKUSHO KK filed Critical TOUWA SEISAKUSHO KK
Priority to JP14605780A priority Critical patent/JPS5772580A/en
Publication of JPS5772580A publication Critical patent/JPS5772580A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sewing Machines And Sewing (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

PURPOSE: To manufacture bobbins having high strength, by forming bobbin halves each of which has a bobbin shaft connected through a rounded surface to a flange portion, through a cold forging process in which ring members stamped and formed from a flat metal plate are treated, and by welding a pair of the bobbin shafts.
CONSTITUTION: A ring member 2 having in its center portion a mounting hole 3 is stamped out and formed from a flat metal plate 1. By pressing around the periphery of the mounting hole 3, a bobbin half 7 having a bobbin shaft 4 and a flange 5 which are connected together through a rounded surface 6, is formed through a cold forging process. Welding 8 is made to the abutted ends of the bobbin shafts 4 of a pair of the bobbin halves 7 and then polishing is made thereto. The steel bobbin thus obtained is placed. Or the aluminum bobbin thus obtained is anodized.
COPYRIGHT: (C)1982,JPO&Japio
JP14605780A 1980-10-17 1980-10-17 Manufacture of bobbin for sewing machine Pending JPS5772580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14605780A JPS5772580A (en) 1980-10-17 1980-10-17 Manufacture of bobbin for sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14605780A JPS5772580A (en) 1980-10-17 1980-10-17 Manufacture of bobbin for sewing machine

Publications (1)

Publication Number Publication Date
JPS5772580A true JPS5772580A (en) 1982-05-06

Family

ID=15399106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14605780A Pending JPS5772580A (en) 1980-10-17 1980-10-17 Manufacture of bobbin for sewing machine

Country Status (1)

Country Link
JP (1) JPS5772580A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06198094A (en) * 1993-01-05 1994-07-19 Seki:Kk Production of bobbin for sewing machine
JPH0666581U (en) * 1992-04-30 1994-09-20 ユアン フォン プラスチック ファクトリー カンパニー リミテド Bobbin for sewing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0666581U (en) * 1992-04-30 1994-09-20 ユアン フォン プラスチック ファクトリー カンパニー リミテド Bobbin for sewing machine
JPH06198094A (en) * 1993-01-05 1994-07-19 Seki:Kk Production of bobbin for sewing machine

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