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    • 9. 发明专利
    • VIBRATING DRUM
    • JPH04371362A
    • 1992-12-24
    • JP17460691
    • 1991-06-19
    • SHINKO ELECTRIC CO LTD
    • HASHIMOTO KEIJIBASE MASAYUKISONOBE KAZUNORI
    • B06B1/16B22D29/00
    • PURPOSE:To simplify an exciting mechanism and to lower the cost by rotating the specific first and second imbalanced wts. in the mutually reverse direction at the equal speed around each rotating center, respectively. CONSTITUTION:An exciting force generator 38 fitted to peripheral wall part of a vibrating drum 30 body supported on ground with spring vibration insulator, generates the exciting force by the rotation of imbalanced wts. 14a, 14b. The imbalanced wts. are composed of the first imbalanced wt. 14a having small quantity multiplying r1 the distance from the first rotating center to the center of gravity by (m1) the mass and the second imbalanced wt. 14b having large quantity multiplying (r2) the distance from the second rotating center to the center of gravity by (m2) the mass. At the time of rotating these first and second imbalanced wts. 14a, 14b in the mutually reverse direction at the equal speed around each rotating center, respectively, elliptical vibrating force is generated and can be given to the drum body 31. Therefore, separating action of the stable sand S can be executed. By circulating movement of the sand S and a casting M, the shake out can be surely executed. Further, structure of the whole exciting source is simple because of the structure forcedly synchronized by connecting one pair of the vibrating motors 12A, 12B with a gear.