| 摘要 |
PURPOSE:To produce plural castings having almost equalities in shape and weight by setting mold sections on the plane, dissipating foaming plastic in each mold in order near to the horizontal runner by supplying molten metal into a sprue and forming the castings in the whole mold sections. CONSTITUTION:The casting sections are set on the plane, and the molten metal is supplied into the sprue 2 arranged at the center of horizontal runner 1 having equal sectional area. The molten metal filling up the runner 1 and next, flowed in each branch runners 3 having equal sectional area and further, flowed in the product runner 4 from gates b1-B4 of the runner 4 at nearest to the runner 1, and in this way, it is reached the foaming plastic in the same mold through an ingate. At the time of filling up the space in the sand mold by dissipating the foaming plastic by the molten metal, again it is flowed in the runner 4 from gates C1-C4 of the next runner 4 through the runner 3, to continue the cast. In this way, the plural castings having almost equalities in shape and weight are continuously produced at the same time.
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