JPS5677057A - Air escaping method in die at filling of molten metal - Google Patents
Air escaping method in die at filling of molten metalInfo
- Publication number
- JPS5677057A JPS5677057A JP15272279A JP15272279A JPS5677057A JP S5677057 A JPS5677057 A JP S5677057A JP 15272279 A JP15272279 A JP 15272279A JP 15272279 A JP15272279 A JP 15272279A JP S5677057 A JPS5677057 A JP S5677057A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- pin holes
- cavity
- piston
- extruding
- 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
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE: To perform filling of molten metal quickly and smoothly and improve quality by letting the air in the cavity escape into the atmosphere through extruding pin holes.
CONSTITUTION: At the time when the molten metal 6 in a sleeve 4 is to be pushed by a piston 5 for injection into a cavity 3 constituted by die-casting dies 1 and 2, extruding pins 7 are kept retreated until the piston 5 starts moving or just before the molten metal reaches the extruding pin holes 10 even if the piston begins to move. Then, the product part 3 and the extruding pin holes 10 and air escape holes 8 are communicated and the air pressure in the cavity 3 is kept equal to the atmospheric pressure, thus the molten metal 6 is pushed into the cavity 3 by the small kinetic energy of the piston 5. Just before the molten metal 6 reaches the extruding pin holes 10, the pins 7 are advanced by a cylinder 9 so that the pins 7 are maintained in the normal positions of the pin holes 10 at the time when the molten metal 6 reaches the pin holes 10.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15272279A JPS5677057A (en) | 1979-11-26 | 1979-11-26 | Air escaping method in die at filling of molten metal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15272279A JPS5677057A (en) | 1979-11-26 | 1979-11-26 | Air escaping method in die at filling of molten metal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5677057A true JPS5677057A (en) | 1981-06-25 |
Family
ID=15546713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15272279A Pending JPS5677057A (en) | 1979-11-26 | 1979-11-26 | Air escaping method in die at filling of molten metal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5677057A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59194367U (en) * | 1983-06-10 | 1984-12-24 | マツダ株式会社 | Casting eject device |
JPH01165156U (en) * | 1988-05-13 | 1989-11-17 | ||
JPH0241753A (en) * | 1988-07-31 | 1990-02-09 | Asahi Tec Corp | Pressurized casting apparatus |
-
1979
- 1979-11-26 JP JP15272279A patent/JPS5677057A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59194367U (en) * | 1983-06-10 | 1984-12-24 | マツダ株式会社 | Casting eject device |
JPH01165156U (en) * | 1988-05-13 | 1989-11-17 | ||
JPH0241753A (en) * | 1988-07-31 | 1990-02-09 | Asahi Tec Corp | Pressurized casting apparatus |
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