JPS558339A - Molding method of bellows and device thereof - Google Patents

Molding method of bellows and device thereof

Info

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
Application number
JP8055678A
Other languages
Japanese (ja)
Inventor
Shigeo Yoneyama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8055678A priority Critical patent/JPS558339A/en
Publication of JPS558339A publication Critical patent/JPS558339A/en
Pending legal-status Critical Current

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
JP8055678A 1978-07-04 1978-07-04 Molding method of bellows and device thereof Pending JPS558339A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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