| 摘要 |
PROBLEM TO BE SOLVED: To provide a foundry sand blowing device in which the filling density of the sand blown into a molding chamber for mold can be improved. SOLUTION: In this molding sand blowing device, the molding sand is blown from two blowing nozzles 10, 11 fitted to the upper wall parts of two molding flasks 2, 3, respectively, and having respective blowing holes 8, 9 inclined by 5-20 deg. to the vertical surface into two molding chambers 6, 7 for molds demarcated with a vertical-state match plate 1, two molding flasks 2, 3 matched to both sides of the match plate 1 and two squeeze palates 4, 5 inserted so as to be freely slid to the other ends of the molding flasks 2, 3. The blowing holes 8, 9 in the blowing nozzles 10, 11 are formed as oval holes having 20-45 mm width.
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