JPS5756120A - Manufacture of composite tube - Google Patents
Manufacture of composite tubeInfo
- Publication number
- JPS5756120A JPS5756120A JP55129273A JP12927380A JPS5756120A JP S5756120 A JPS5756120 A JP S5756120A JP 55129273 A JP55129273 A JP 55129273A JP 12927380 A JP12927380 A JP 12927380A JP S5756120 A JPS5756120 A JP S5756120A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- pipe expanding
- pipe
- load
- adjoining
- 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 Metal By Deep-Drawing, Or The Like (AREA)
Abstract
PURPOSE: To manufacture a composite tube with high productivity and to lengthen the life of pipe expanding medium rebber in rubber pipe expanding by squaring adjoining faces of the pipe expanding medium rubber and pipe expanding pressure seal rubber at no-load state.
CONSTITUTION: A pipe expanding medium rubber 3 having such a shape that the face adjoining to a pipe expanding seal rubber 4 squares without applying load is used. When a punch 5 is pressed by applying load, rubber 3 placed in an inner pipe 1 contracts and expands in the direction of diameter and expands the inner pipe 1 to make it adhere to and unite with an outer pipe 2. At this time, the rubber 3 works preferentially to expand adjoining rubber 4 at initial stage of load application. Accprdingly, the seal becomes perfect even at initial stage of load application, and flowing out of rubber 3 can be prevented. Conseqeutnly, failure in pipe expanding is eliminated and the rubber 3 restores smoothly to the original state as the load is released.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55129273A JPS5756120A (en) | 1980-09-19 | 1980-09-19 | Manufacture of composite tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55129273A JPS5756120A (en) | 1980-09-19 | 1980-09-19 | Manufacture of composite tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5756120A true JPS5756120A (en) | 1982-04-03 |
Family
ID=15005504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55129273A Pending JPS5756120A (en) | 1980-09-19 | 1980-09-19 | Manufacture of composite tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5756120A (en) |
-
1980
- 1980-09-19 JP JP55129273A patent/JPS5756120A/en active Pending
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