JPS6438218A - Mold exterior airtight variable pressure molding apparatus - Google Patents
Mold exterior airtight variable pressure molding apparatusInfo
- Publication number
- JPS6438218A JPS6438218A JP19419387A JP19419387A JPS6438218A JP S6438218 A JPS6438218 A JP S6438218A JP 19419387 A JP19419387 A JP 19419387A JP 19419387 A JP19419387 A JP 19419387A JP S6438218 A JPS6438218 A JP S6438218A
- Authority
- JP
- Japan
- Prior art keywords
- die plate
- protruding ring
- ring
- die
- molding apparatus
- 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)
Abstract
PURPOSE:To perform both of in-mold vacuum molding and the press molding in foam molding by one generally existing mold, by providing an airtight seal member composed of a packing ring and a protruding ring to the opposed surface of a die plate outside the vent hole opened to the opposed surface of one die plate. CONSTITUTION:A fixed die plate 1 and a movable die plate 2 are provided in opposed relationship and an airtight seal member composed of a packing ring 4 and a protruding ring 5 is provided to the opposed surfaces of the die plates 1, 2 outside the vent hole 3 formed to one of the die plates 1, 2. At first, when the movable die plate 2 is moved in the direction of the fixed die plate 1 from such an initial state that the die plates 1, 2 are separated from each other and the protruding ring 5 is also separated from the fixed plate 1 to uniformly press the leading end of the protruding ring 5 to the packing ring 4, an airtight space 6 is formed. Subsequently, the airtight space 6 is evacuated (pressurized) and this state is held to make it possible to bring the molds 7, 8 to a vacuum (pressurized) state.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19419387A JPS6438218A (en) | 1987-08-03 | 1987-08-03 | Mold exterior airtight variable pressure molding apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19419387A JPS6438218A (en) | 1987-08-03 | 1987-08-03 | Mold exterior airtight variable pressure molding apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6438218A true JPS6438218A (en) | 1989-02-08 |
Family
ID=16320496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19419387A Pending JPS6438218A (en) | 1987-08-03 | 1987-08-03 | Mold exterior airtight variable pressure molding apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6438218A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04110121A (en) * | 1990-08-30 | 1992-04-10 | Amp Japan Ltd | Injection mold |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4918135U (en) * | 1972-05-17 | 1974-02-15 | ||
JPS519058B2 (en) * | 1971-11-02 | 1976-03-23 | ||
JPS59222321A (en) * | 1983-06-01 | 1984-12-14 | Matsushita Electric Ind Co Ltd | Vacuum evacuation of die cavity and apparatus therefor |
-
1987
- 1987-08-03 JP JP19419387A patent/JPS6438218A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS519058B2 (en) * | 1971-11-02 | 1976-03-23 | ||
JPS4918135U (en) * | 1972-05-17 | 1974-02-15 | ||
JPS59222321A (en) * | 1983-06-01 | 1984-12-14 | Matsushita Electric Ind Co Ltd | Vacuum evacuation of die cavity and apparatus therefor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04110121A (en) * | 1990-08-30 | 1992-04-10 | Amp Japan Ltd | Injection mold |
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