JPS558339A - Molding method of bellows and device thereof - Google Patents
Molding method of bellows and device thereofInfo
- Publication number
- JPS558339A JPS558339A JP8055678A JP8055678A JPS558339A JP S558339 A JPS558339 A JP S558339A JP 8055678 A JP8055678 A JP 8055678A JP 8055678 A JP8055678 A JP 8055678A JP S558339 A JPS558339 A JP S558339A
- Authority
- JP
- Japan
- Prior art keywords
- die roll
- cylindrical blank
- pressure
- roll
- blank
- 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
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
PURPOSE: To form bellows of a uniform thickness and a constant shape by constituting a pair of molding rolls with the recessed parts becoming subsequently narrower and the raised parts becoming subsequently higher.
CONSTITUTION: A cylindrical blank 50 is fitted onto a female die roll 26 from the large diameter part 31 of the female die roll 26 and its externally fitted end part is hung across the annular ring 27. After the female dir roll 26 is rotated, the male die roll 37 is pressed downward at a specified speed to press and deform the cylindrical blank 50 with its pressing part 39. Here, the male die roll 37' and chylindrical blank 50 are rotated integrally with the female die roll 26. After pressing, the male die roll 37 is moved upward and is then advanced one pitch forward to hang the pressure- deformed part of the cylindrical blank 50 in the annular ring 28 and pressure molding is done in the similar manner. If pressure molding is performed each time when the cylindrical blank 50 is advanced and hung, it is subsequently pressure molded to a desired shape and the cylindrical blank 50 is formed to the shape having plural bellows 51.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8055678A JPS558339A (en) | 1978-07-04 | 1978-07-04 | Molding method of bellows and device thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8055678A JPS558339A (en) | 1978-07-04 | 1978-07-04 | Molding method of bellows and device thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS558339A true JPS558339A (en) | 1980-01-21 |
Family
ID=13721606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8055678A Pending JPS558339A (en) | 1978-07-04 | 1978-07-04 | Molding method of bellows and device thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS558339A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58152324U (en) * | 1982-04-07 | 1983-10-12 | 株式会社タクマ | Grooving device for metal tubes |
-
1978
- 1978-07-04 JP JP8055678A patent/JPS558339A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58152324U (en) * | 1982-04-07 | 1983-10-12 | 株式会社タクマ | Grooving device for metal tubes |
JPS6313856Y2 (en) * | 1982-04-07 | 1988-04-19 |
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