| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vacuum die casting machine which secures the flatness of pressure reduction valve parts in die matching, further, is not influenced by injection forming even if die strain is generated and the width of the matched parts of the pressure reduction valve parts is changed, and can prevent the jetting or the like of a molten metal. <P>SOLUTION: In the vacuum die casting machine 10, the pressure of the inside of a cavity 10a is reduced by a fixed die side pressure reduction valve 21, a movable die side pressure reduction valve 22 and a pressure reduction apparatus 40, thereafter, the molten metal is injection-formed into the cavity 10a, and, based on the detection of the molten metal by a molten metal detection sensor 43, the opening degree of an exhaust valve 24 is controlled by the pressure reduction apparatus 40. In the fixed die side pressure reduction valve 21 and the movable die side pressure reduction valve 22, a fixed die side spacer 27 and a movable die side spacer 28 are fitted so as to be inserted into a space with a fixed die 11 and a movable die 12, respectively. <P>COPYRIGHT: (C)2010,JPO&INPIT |
