JPS5739072A - Method and device for die casting - Google Patents
Method and device for die castingInfo
- Publication number
- JPS5739072A JPS5739072A JP11437780A JP11437780A JPS5739072A JP S5739072 A JPS5739072 A JP S5739072A JP 11437780 A JP11437780 A JP 11437780A JP 11437780 A JP11437780 A JP 11437780A JP S5739072 A JPS5739072 A JP S5739072A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- plunger
- working fluid
- pressure
- cavity
- 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
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE: To improve quality and reduce the abrasion of cylinders and pistons by filling molten metal into a die cavity then holding an injection piston still and acting the pressure of an accumulator upon an injection cylinder.
CONSTITUTION: The working fluid forcibly fed by a pump 12 flows into the chamber 14a of an injection cylinder 14 and operates a plunger 11 downward to forcibly feed molten metal into a die cavity because the coil a of a directional control valve 13 is held energized. When the molten metal is completely filled in the cavity at this time, the plunger 11 is decelerated. The deceleration value of the plunger 11 is converted to an electric signal by a converter 16, and the coil (a) of the valve 13 is de-energized by this signal; at the same time, a directional control valve 18 is operated. Hence, the working fluid from the pump 12 is stopped and the piston 15 is stopped. When the solidification shrinkage of the molten metal in the cavity initiates after stopping, the gaseous pressure of an accumulator balancing with the final working fluid pressure acts so that the plunger 11 begins to move, thereby preventing the drop of the molten metal pressure in the cylinder 10 to the maximum extent.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11437780A JPS5739072A (en) | 1980-08-20 | 1980-08-20 | Method and device for die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11437780A JPS5739072A (en) | 1980-08-20 | 1980-08-20 | Method and device for die casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5739072A true JPS5739072A (en) | 1982-03-04 |
Family
ID=14636156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11437780A Pending JPS5739072A (en) | 1980-08-20 | 1980-08-20 | Method and device for die casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5739072A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566641A (en) * | 1981-05-22 | 1986-01-28 | Ngk Insulators, Ltd. | Sheet breaking apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4716578U (en) * | 1971-03-26 | 1972-10-26 | ||
| JPS49111964A (en) * | 1973-02-07 | 1974-10-24 | ||
| JPS5125404A (en) * | 1974-07-19 | 1976-03-02 | Kigurii Co Inc | |
| JPS51108631A (en) * | 1975-03-12 | 1976-09-27 | Ube Industries | SHASHUTSUSEIKEISOCHINO SHASHUTSUKAIRO |
-
1980
- 1980-08-20 JP JP11437780A patent/JPS5739072A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4716578U (en) * | 1971-03-26 | 1972-10-26 | ||
| JPS49111964A (en) * | 1973-02-07 | 1974-10-24 | ||
| JPS5125404A (en) * | 1974-07-19 | 1976-03-02 | Kigurii Co Inc | |
| JPS51108631A (en) * | 1975-03-12 | 1976-09-27 | Ube Industries | SHASHUTSUSEIKEISOCHINO SHASHUTSUKAIRO |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566641A (en) * | 1981-05-22 | 1986-01-28 | Ngk Insulators, Ltd. | Sheet breaking apparatus |
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