| 摘要 |
PCT No. PCT/JP97/01056 Sec. 371 Date Mar. 16, 1998 Sec. 102(e) Date Mar. 16, 1998 PCT Filed Mar. 27, 1997 PCT Pub. No. WO97/37790 PCT Pub. Date Oct. 16, 1997Before supplying molding sand into the blow head, a blow-in port of the mold-defining device is connected to a blow-off port of the blow head so that molding sand flowing out of the blow-off port is received by the device after the molding sand has been supplied to the blow head. Preferably, after molding sand has been charged into the mold space but before the mold-defining device is moved out of engagement with the blow head, sand remaining in the blow-off port is hardened.
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