Manufacture of mold |
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| 申请号 | JP927385 | 申请日 | 1985-01-23 | 公开(公告)号 | JPS61169132A | 公开(公告)日 | 1986-07-30 |
| 申请人 | Mitsubishi Heavy Ind Ltd; | 发明人 | KOMATSU TSUKASA; FUJIMOTO MASAO; HIRAKAKIUCHI EIJI; KAMAKURA MITOMU; | ||||
| 摘要 | PURPOSE:To save the cost of a pattern for a product of simple shape, such as a circular or a square pillar shape, by using only a temporary pattern provided with a cut at one location or plural divided faces without using a pattern for a mold core in manufacturing a main mold and a mold core. CONSTITUTION:A temporary pattern 1 having a straight inner-diam. shape is provided with a cut 1, at its one location, and a temporary pattern 1 having a recessed part at its inner diam. is divided into plural sections, which are fixed together by joggling and another means. Further, the pattern 1 is formed by using resin material such as expanded polystylene, and is coated with surface hardening material so as to use it repeatedly. The inner-diam. side of pattern 1 is filled with molding sand 6, and matching joggles 7 are attached to the end face of a mold after molding. Next, molding sand 3 is charged into a molding flask 2 for a lower mold to mold a lower mold, which is turned upside down to set the temporary pattern 1, a molding flask 4 for an upper mold and a gate rod thereon, then molding sand 5 is charged into the upper flask 4 to mold an upper mold. Next, the upper and lower molds are separated from each other, and the mold core 6 is taken out after extracting the pattern 1 from the lower mold to register the upper and lower molds and the mold core. | ||||||
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| 说明书全文 | |||||||
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