JPS5728621A - Manufacture of bent pipe for pipe joint - Google Patents
Manufacture of bent pipe for pipe jointInfo
- Publication number
- JPS5728621A JPS5728621A JP10171680A JP10171680A JPS5728621A JP S5728621 A JPS5728621 A JP S5728621A JP 10171680 A JP10171680 A JP 10171680A JP 10171680 A JP10171680 A JP 10171680A JP S5728621 A JPS5728621 A JP S5728621A
- Authority
- JP
- Japan
- Prior art keywords
- plastic film
- blank plate
- formed body
- female die
- die
- 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
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
PURPOSE: To lubricate between the blank plate and the female die and to enable long time using of dies, by sticking a plastic film onto one surface of the blank plate in case of a process of pressing a blank plate to form the intermediate U- shaped products of the bent pipes for the pipe joints.
CONSTITUTION: A blank plate 1 is put onto a flange 8 of a female die 10 with its under face being sticked by a plastic film 3. And a male die 11 corresponding to a concave face 4 of a main body 4 of the female die presses from upward to form a intermediate formed body 12 having U-shaped section with plane part at its bottom. Then the plastic film 3 formerly used is removed and a plastic film 3a is stuck again onto the outer surface of the intermediate formed body 12 via lubricant 2a. And a secondary intermediate formed body 21 having U-shaped section is formed by pressing with a femal die 20 having a circular concaved surface 14'. As in the case of former process, the plastic film 3a shows its lubricating effect thus preventing the seizure.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10171680A JPS5728621A (en) | 1980-07-24 | 1980-07-24 | Manufacture of bent pipe for pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10171680A JPS5728621A (en) | 1980-07-24 | 1980-07-24 | Manufacture of bent pipe for pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5728621A true JPS5728621A (en) | 1982-02-16 |
Family
ID=14308020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10171680A Pending JPS5728621A (en) | 1980-07-24 | 1980-07-24 | Manufacture of bent pipe for pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5728621A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889792A (en) * | 2018-05-25 | 2018-11-27 | 无锡市新峰管业有限公司 | A kind of super wall thickness seamless elbow pipe fitting forming technique of heavy caliber |
| CN110883127A (en) * | 2019-12-05 | 2020-03-17 | 昆山新莱洁净应用材料股份有限公司 | U-shaped bent pipe machining process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS477397U (en) * | 1971-02-20 | 1972-09-27 |
-
1980
- 1980-07-24 JP JP10171680A patent/JPS5728621A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS477397U (en) * | 1971-02-20 | 1972-09-27 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889792A (en) * | 2018-05-25 | 2018-11-27 | 无锡市新峰管业有限公司 | A kind of super wall thickness seamless elbow pipe fitting forming technique of heavy caliber |
| CN108889792B (en) * | 2018-05-25 | 2020-03-17 | 无锡市新峰管业有限公司 | Forming process of large-caliber super-wall-thickness seamless elbow pipe fitting |
| CN110883127A (en) * | 2019-12-05 | 2020-03-17 | 昆山新莱洁净应用材料股份有限公司 | U-shaped bent pipe machining process |
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