| 摘要 |
An apparatus and method for molding building structures, the apparatus including an injector assembly having a manifold and a plurality of injector tubes for injecting a plastic composition containing a granular material and a binder into a mold, a plurality of void forming members supported at predetermined intervals within the mold on a wire screen, the injector tubes being spaced at intervals corresponding to the intervals between the void forming members, a number of vibrators mounted on the mold to vibrate the mold as the premixed composition is injected into the injector assembly, the assembly being raised at a rate sufficient to maintain a predetermined head at the injector tube outlets and a vibrator mounted on said assembly to maintain an even flow of the plastic composition through the injector tubes and to increase the density of composition in the mold. The method includes the steps in injecting or pumping a plastic composition containing a granular material and a binder into an injector tube assembly having a plurality of injector tubes disposed between void forming members supported within a mold, raising the injector tube assembly at a rate sufficient to maintain a predetermined head at the injector tube outlets and continuously vibrating the mold and injector tube assembly to assure uniform density and even flow of the plastic composition into the mold and allows sufficient time for the plastic composition to set.
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