JPS5722460A - Manufacture of diaphragm - Google Patents
Manufacture of diaphragmInfo
- Publication number
- JPS5722460A JPS5722460A JP9385980A JP9385980A JPS5722460A JP S5722460 A JPS5722460 A JP S5722460A JP 9385980 A JP9385980 A JP 9385980A JP 9385980 A JP9385980 A JP 9385980A JP S5722460 A JPS5722460 A JP S5722460A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- diaphragm
- foundation cloth
- drilled
- section
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000004744 fabric Substances 0.000 abstract 6
- 239000012530 fluid Substances 0.000 abstract 5
- 238000005553 drilling Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- Reciprocating Pumps (AREA)
- Diaphragms And Bellows (AREA)
Abstract
PURPOSE: To prevent permeation leak of fluid from the foundation cloth part by preventing the section of the foundation cloth from being exposed at the drilled hole area of a diaphragm combined with the said foundation cloth.
CONSTITUTION: A diaphragm basic mold 1a is molded by a mold frame. On the said disphragm basic mold 1a, a fluid passage 9 is drilled at the protuded hole part 2, and a shaft hole 8 is drilled at the center of the diaphragm part 5. In the above operation, the hole drilling 9a is performed with a conventional punch, and the punch 10 which is heated at proper temperature beforehand is inserted into the said drilled hole 9a, and the rubber part 4 and the foundation cloth 3 on the hole part section are melted. With such a process, the fluid passage 9 which is sealed so that the rubber part 4 in the upper and the lower layer parts envelope the foundation cloth 3 with hole surface. With this diaphragm, the fluid passage 9 can be constituted so as to have the holed part section where the wall of the hole is perfectly sealed by means of a rubber material 4, so permeation leak of fluid from the section of the foundation cloth 3 can be prevented.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9385980A JPS5722460A (en) | 1980-07-11 | 1980-07-11 | Manufacture of diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9385980A JPS5722460A (en) | 1980-07-11 | 1980-07-11 | Manufacture of diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5722460A true JPS5722460A (en) | 1982-02-05 |
| JPS6227305B2 JPS6227305B2 (en) | 1987-06-13 |
Family
ID=14094154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9385980A Granted JPS5722460A (en) | 1980-07-11 | 1980-07-11 | Manufacture of diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5722460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5220863A (en) * | 1992-05-18 | 1993-06-22 | Westinghouse Air Brake Company | Conical diaphragm and method of making |
-
1980
- 1980-07-11 JP JP9385980A patent/JPS5722460A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5220863A (en) * | 1992-05-18 | 1993-06-22 | Westinghouse Air Brake Company | Conical diaphragm and method of making |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6227305B2 (en) | 1987-06-13 |
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