JPS6427757A - Gas venting device in die for die casting - Google Patents
Gas venting device in die for die castingInfo
- Publication number
- JPS6427757A JPS6427757A JP18306987A JP18306987A JPS6427757A JP S6427757 A JPS6427757 A JP S6427757A JP 18306987 A JP18306987 A JP 18306987A JP 18306987 A JP18306987 A JP 18306987A JP S6427757 A JPS6427757 A JP S6427757A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- air pressure
- die
- die casting
- molten metal
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
- B22D17/145—Venting means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
PURPOSE:To prevent invasion of molten metal into a conical valve, etc., by detecting electrical abnormality or abnormality of air pressure at the time of developing the abnormality in the air pressure for working the conical valve and molten metal detecting sensor, etc., to stop the movement of die casting machine. CONSTITUTION:When resistant value of the molten metal detecting sensor 4 excesses the setting value, it is judged that the sensor is normal and when this value becomes below the setting value, signal is transmitted to a control panel 51 in the die casting machine as abnormal condition before pouring to stop the movement of the die casting machine. During this operation in a gas venting valve 1, switching circuit 20 is worked with the signal of the sensor 4, and a solenoid valve 21 is worked, and the conical valve 5 is shifted to the right direction to shut the gap 8. But, as the shutting time of the valve 1 is in inverse proportion to the air pressure, in case the air pressure caused by breakage of the piping, etc., is lowered, the shutting of the valve 1 is not in time for reaching of the molten metal and faulty valve is developed. Thus, the air pressure is checked before clamping the die with a pressure gage 50 and in case the air pressure is less than the setting value, the operation of the die casting is stopped and the die clamping is not executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18306987A JPS6427757A (en) | 1987-07-22 | 1987-07-22 | Gas venting device in die for die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18306987A JPS6427757A (en) | 1987-07-22 | 1987-07-22 | Gas venting device in die for die casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6427757A true JPS6427757A (en) | 1989-01-30 |
Family
ID=16129203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18306987A Pending JPS6427757A (en) | 1987-07-22 | 1987-07-22 | Gas venting device in die for die casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6427757A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219409A (en) * | 1992-04-27 | 1993-06-15 | Outboard Marine Corporation | Vacuum die casting process |
| US6158495A (en) * | 1998-02-11 | 2000-12-12 | V.D.S. Vacuum Diecasting Service S.A. | Venting valve device for die casting |
-
1987
- 1987-07-22 JP JP18306987A patent/JPS6427757A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219409A (en) * | 1992-04-27 | 1993-06-15 | Outboard Marine Corporation | Vacuum die casting process |
| US6158495A (en) * | 1998-02-11 | 2000-12-12 | V.D.S. Vacuum Diecasting Service S.A. | Venting valve device for die casting |
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