发明名称 |
Apparatus and method for producing shell-like molds |
摘要 |
An apparatus to produce a shell-like mold by vacuum sucking molding sand into a shell-like cavity defined by a cope and a drag is disclosed. The apparatus includes a drag and a cope mounted on the drag so that they define a shell-like cavity between them. The drag holds on its upper surface a pattern. The drag has a plurality of sucking apertures at places adjacent to the perimeter of the pattern. The sucking apertures communicate with a vacuum source. The cope has a single molding-sand-supplying bore which communicates with the cavity. To produce a shell-like mold, the molding sand is introduced from the bore into the cavity by means of a vacuum source.
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申请公布号 |
US5881794(A) |
申请公布日期 |
1999.03.16 |
申请号 |
US19970959104 |
申请日期 |
1997.10.23 |
申请人 |
SINTOKOGIO, LTD. |
发明人 |
HARADA, HISASHI;SUGIMOTO, KAZUO;UZAKI, NAGATO |
分类号 |
B22C9/03;(IPC1-7):B22C15/23 |
主分类号 |
B22C9/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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