JPS56111562A - High-pressure solidifying casting apparatus having double plungers - Google Patents
High-pressure solidifying casting apparatus having double plungersInfo
- Publication number
- JPS56111562A JPS56111562A JP1371580A JP1371580A JPS56111562A JP S56111562 A JPS56111562 A JP S56111562A JP 1371580 A JP1371580 A JP 1371580A JP 1371580 A JP1371580 A JP 1371580A JP S56111562 A JPS56111562 A JP S56111562A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- side plunger
- outer side
- molten metal
- 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
Abstract
PURPOSE: To enable to hold the inside of a casting under high pressure by providing an outer side plunger which forces molten metal into a die, and an inner side plunger which prevents the pressure drop in the casting caused by cooling.
CONSTITUTION: The molten metal for one shot is supplied to a sprue 5, and the pressure oil passed through a change-over valve 10 is supplied to the pressure oil port (a) of an outer side cylinder 3 via a pressure control valve 12 and a pilot check valve 14, whereby an outer side plunger 4 is pushed and the molten metal is sent into a die 6. Since an inner side plunger 8 is mounted to an outer side plunger 4, the molten metal is pushed simultaneously. In this state, the pressure in the die 6 rises. When this pressure reaches a specified value, it is detected with a pressure switch 15 which in turn operates a change-over valve 11. The pressure oil passed through the change-over valve 11 is supplied from the pressure oil port (c) of the inner side cylinder 7 via a pressure control vavle 13, so that the inner side plunger 8 is operated. Here, even if the pressure of the inner side plunger 8 is higher than the pressure of the outer side plunger 4, the outer side plunger 4 is prevented from retreating by a pilot check valve 13.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1371580A JPS56111562A (en) | 1980-02-08 | 1980-02-08 | High-pressure solidifying casting apparatus having double plungers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1371580A JPS56111562A (en) | 1980-02-08 | 1980-02-08 | High-pressure solidifying casting apparatus having double plungers |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56111562A true JPS56111562A (en) | 1981-09-03 |
Family
ID=11840932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1371580A Pending JPS56111562A (en) | 1980-02-08 | 1980-02-08 | High-pressure solidifying casting apparatus having double plungers |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56111562A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5985357A (en) * | 1982-07-09 | 1984-05-17 | Akebono Brake Ind Co Ltd | Device and method for low pressure casting |
CN110953220A (en) * | 2019-12-24 | 2020-04-03 | 一汽解放汽车有限公司 | Control valve oil hole testing device and method |
-
1980
- 1980-02-08 JP JP1371580A patent/JPS56111562A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5985357A (en) * | 1982-07-09 | 1984-05-17 | Akebono Brake Ind Co Ltd | Device and method for low pressure casting |
CN110953220A (en) * | 2019-12-24 | 2020-04-03 | 一汽解放汽车有限公司 | Control valve oil hole testing device and method |
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