JPS5772580A - Manufacture of bobbin for sewing machine - Google Patents
Manufacture of bobbin for sewing machineInfo
- 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
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
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)
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 |
-
1980
- 1980-10-17 JP JP14605780A patent/JPS5772580A/en active Pending
Cited By (2)
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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