| 摘要 |
PURPOSE:To remove sand easily by providing a through-hole on the extension of the section where the core print of a core of a core mold is molded, and ejecting air into the core through the through-hole and through the core print of the core. CONSTITUTION:A through-hole 9 is provided on the extension of the section where the core print 6 of a core 4 of a core mold is molded. When air is fed into the hole 9 from an air hose 7 via a coupler 6, the air contacts with the end part of the core print 6 and blows vigorously toward the core print 6 from a vent 10 buried in the hole 9. As a result, the uncured sand in the core 4 is blown off and is removed through the sand charging port. |
