JPS5744430A - Manufacture of compound pipe - Google Patents
Manufacture of compound pipeInfo
- Publication number
- JPS5744430A JPS5744430A JP11976680A JP11976680A JPS5744430A JP S5744430 A JPS5744430 A JP S5744430A JP 11976680 A JP11976680 A JP 11976680A JP 11976680 A JP11976680 A JP 11976680A JP S5744430 A JPS5744430 A JP S5744430A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- rubber products
- elastomer
- seal rubber
- punch
- 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.)
- Granted
Links
Landscapes
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
PURPOSE: To prevent plastic deforming of seals and to produce compound pipes with good productivity at the reduced relieving time of an expanding load, by axially pressing an elastomer inserted in the inner pipe via seal rubber products having a round corners at its pressure side to bring the inner pipe into close contact with the inside surface of the outer pipe.
CONSTITUTION: Seal rubber products of special shape, that is, seal rubber products 4 having circular or chamfered corners at its loaded side are prepared. Then a punch 5 is pushed by some load and an expanding medium rubber in an inner tube 1, that is, an elastomer 3 is axially compressed via the rubbers 4, and at the same time the tube 1 is expanded in a perpendicular direction to bring the outer surface of the pipe 1 into colse contact with the inside surface of an outer pipe 2, and the two pipe are joined together. When the pressure on the rubber products 4 is relieved by unloading of the punch 5, failures such as inroads to the wall of the inside of the pipe due to plastic deforming of the surface of rubber products 4 are prevented. Therefore the elastomer 3 is smoothly and normally restored to enable the easy and safe expansion of pipes in a short time.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11976680A JPS5744430A (en) | 1980-09-01 | 1980-09-01 | Manufacture of compound pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11976680A JPS5744430A (en) | 1980-09-01 | 1980-09-01 | Manufacture of compound pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5744430A true JPS5744430A (en) | 1982-03-12 |
JPS6253247B2 JPS6253247B2 (en) | 1987-11-10 |
Family
ID=14769651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11976680A Granted JPS5744430A (en) | 1980-09-01 | 1980-09-01 | Manufacture of compound pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5744430A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6487431A (en) * | 1987-09-30 | 1989-03-31 | Fujitsu Ltd | Detecting mechanism for type of paper |
-
1980
- 1980-09-01 JP JP11976680A patent/JPS5744430A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6253247B2 (en) | 1987-11-10 |
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