JPS5533804A - Method and apparatus for roll forming of bellows - Google Patents
Method and apparatus for roll forming of bellowsInfo
- Publication number
- JPS5533804A JPS5533804A JP10437878A JP10437878A JPS5533804A JP S5533804 A JPS5533804 A JP S5533804A JP 10437878 A JP10437878 A JP 10437878A JP 10437878 A JP10437878 A JP 10437878A JP S5533804 A JPS5533804 A JP S5533804A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- pitch
- moldings
- rolling reduction
- molding
- 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 roll-form the bellows at high formability and precision, by reducing the pitch between moldings depending on the rolling reduction when a pair of forming rolls approach while rotating.
CONSTITUTION: As a roll shaft 22 lowers, moldings 24... are caused to contact with tubular member 1, and are slid into the space between moldings 26... which rotate integrally with a roll shaft 23, tereby forming bellows 2. At this time, simultaneously with the contact mentioned above, the left side molding 26 is moved to the right side under pressure (while the molding 26 at the right end is fixed), and the pitch Pb is reduced depending on the rolling reduction S of the moldings 24... In this case, since the pitch Pa decreases at the same time as the pitch Pb is being reduced, it is possible to form without applying such force that may bring the blanks to breakage. In this method, even when a plurality of bellows 2 are processed simultaneously, the side wall of the member 1 may not be broken by tension, and bellows 2 uniform in both height and pitch may be produced at high efficiency.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10437878A JPS5533804A (en) | 1978-08-29 | 1978-08-29 | Method and apparatus for roll forming of bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10437878A JPS5533804A (en) | 1978-08-29 | 1978-08-29 | Method and apparatus for roll forming of bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5533804A true JPS5533804A (en) | 1980-03-10 |
Family
ID=14379107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10437878A Pending JPS5533804A (en) | 1978-08-29 | 1978-08-29 | Method and apparatus for roll forming of bellows |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5533804A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63317306A (en) * | 1987-06-19 | 1988-12-26 | Chisso Corp | Low polymerization degree vinyl chloride polymer powder with small amount of residual vinyl chloride monomer and its preparation |
| JPH0532707A (en) * | 1991-07-26 | 1993-02-09 | Sekisui Chem Co Ltd | Production of vinyl chrolide-based resin |
| JPH0532706A (en) * | 1991-07-26 | 1993-02-09 | Sekisui Chem Co Ltd | Production of vinyl chloride-based resin |
-
1978
- 1978-08-29 JP JP10437878A patent/JPS5533804A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63317306A (en) * | 1987-06-19 | 1988-12-26 | Chisso Corp | Low polymerization degree vinyl chloride polymer powder with small amount of residual vinyl chloride monomer and its preparation |
| JPH0444884B2 (en) * | 1987-06-19 | 1992-07-23 | Chisso Corp | |
| JPH0532707A (en) * | 1991-07-26 | 1993-02-09 | Sekisui Chem Co Ltd | Production of vinyl chrolide-based resin |
| JPH0532706A (en) * | 1991-07-26 | 1993-02-09 | Sekisui Chem Co Ltd | Production of vinyl chloride-based resin |
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