| 摘要 |
<p>A molding machine for molding foundry molds or cores and intended for use with a non-free-flowing mold material 71 is provided with a restrictor 48 and a distributor passage 56 in a distributor 54. The material 71 may be a mixture of sand and a binder, which binder may be cured by an admixed catalyst or by a later-supplied catalyst gas. The machine is especially useful where one or more mold cavities 15, 16 are being filled through a plurality of investment apertures 21, 22 and the molding material is not free-flowing and also has a tendency to set or harden. The restrictor 48 is provided downstream of the blow head so that all of the molding material 71 has to pass through the restrictor opening 49. The material 71 then goes into the distributor passage 56 which distributes the molding material to the investment apertures 21, 22, and thence into the mold cavities 15, 16. A clean-out device is provided to clean out any excess material left in the blow head, restrictor and distributor. <IMAGE></p> |
