| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum casting apparatus for injection molding of molten metal, which prevents flash from a gap between an injection sleeve and an injection tip or prevents excess lubricants from piling up in a closure, resulting in eliminating the need for cleaning the closure for each injection molding, reducing working processes, and improving working efficiency. SOLUTION: The vacuum casting apparatus 30 includes: a mold 1 which includes a cavity 4 formed therein; the injection sleeve 2 one end of which communicates with the cavity 4 and the other end of which opens as an open side end 2a; the injection tip 3 which is arranged in the injection sleeve 2; the closure 10 which is arranged coaxially with the injection tip 3 for forming a vacuum chamber 11; a vacuum means which is connected to the cavity 4 and the vacuum chamber 11; and a lid 21 which closes the open side end 2a of the injection sleeve 2, arranged coaxially with the closure 10, during injection operation. COPYRIGHT: (C)2011,JPO&INPIT
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