Molding device and molding method or sand mold
US6662855B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2001 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Dec 22, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C15/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sand hopper (28) is provided at its lower position (40) with a plurality of nozzles (42) and a plurality of squeeze feet (46), the pressure of which is controlled, and which are located adjacent to a side of each squeeze foot. The sand hopper (28) is supported by supporting means (22, 26) such that it can move vertically. A mold space is defined by a pattern plate having a pattern (74a), a flask (4), a filling frame (52), and a sand hopper (28) having a plurality of squeeze feet (46) disposed above the filling frame (52). By discharging molding sand from the nozzles (42), it is introduced into the mold space. The mold sand (S2) in the mold space is compacted by the squeeze feet by lowering the sand hopper toward the mold space. Since the molding machine is so arranged, both introducing molding sand into a mold space and compacting the introduced molding sand are performed at one station (a molding-sand introducing and compacting station).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.