| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To effectively discharge a gas in a cavity of a mold in molding. <P>SOLUTION: In a peripheral edge region 9 defined to surround the entire periphery of the cavity 3 with a predetermined width along the periphery edge of the cavity 3 on a parting surface 200 of at least one split mold 2 of the mold 50, first vent grooves 111, 112, 113, 114, 115 formed to extend radially from the center of the cavity 3 to cross the peripheral edge region 9, second vent grooves 121, 122, 123, 124 formed along the outer edge of the peripheral edge region 9, and third vent grooves 131, 132, 133, 134, 135 connected to the second vent grooves 121, 122, 123, 124 to communicate with the outside of the mold are provided. Gas guiding paths for discharging the gas in the cavity 3 to the outside of the mold are formed by the first vent grooves 111, 112, 113, 114, 115, the second vent grooves 121, 122, 123, 124 and the third vent grooves 131, 132, 133, 134, 135. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
