| 摘要 |
PURPOSE: Withdrawing structure of a mold is provided to prevent a transformation of a cylinder block material and to reduce a defective rate by easily withdrawing the mold. CONSTITUTION: An upper mold is divided to a first upper mold(5), a second upper mold(7) and a both side upper mold(9). The first upper mold and the second upper mold are connected through an ejecting stopper(11). The ejecting stopper withdraws the second upper mold after withdrawing the first upper mold. Then, the both side upper mold is withdrawn. The ejecting stopper is vertically inserted in the first upper mold through a slide hole(13). A circular stopper(15) to be larger than the slide hole is formed in the upper part of the ejecting stopper. A bolt portion(7) to be combined with the second upper mold is formed in the lower part of the ejecting stopper.
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