射壓式造型機它是利用壓縮空氣將型砂均勻地射入砂箱預緊實，然后再施加壓力進行壓實。常用的有垂直分型無箱射壓造型機和水平分型脫箱射壓造型機。垂直分型無箱射壓造型機造型不用砂箱，型砂直接射入帶有模板的造型室，所造砂型尺寸精度高，因砂箱兩面都有型腔，生產(chǎn)率很高，但下芯比較困難，對型砂質量要求嚴。水平分型脫箱射壓造型機利用砂箱進行造型，砂型造好后合型脫箱，下芯比較方便，生產(chǎn)率高。拋砂機 利用旋轉葉片拋出砂團緊實砂型。拋砂機的特點是填砂與緊實同時進行，機器結構簡單、重量輕，適應性強。但葉片易磨損，生產(chǎn)率較低。
Injection molding machine uses compressed air to inject molding sand evenly into sand box for pre compaction, and then apply pressure for compaction. There are two kinds of injection molding machines in common use: vertical type and horizontal type. The vertical parting non box injection molding machine does not use a sand box for molding, and the molding sand is directly injected into the molding room with a template. The size accuracy of the sand mold is high. Because there are cavities on both sides of the sand box, the productivity is very high, but it is difficult to lower the core, and the quality requirements of the molding sand are strict. The horizontal parting and decanting injection molding machine uses the sand box for molding. After the sand mold is made, the final closing and decanting is convenient to lower the core, and the productivity is high. The sanding machine uses the rotating blade to throw out the sand mass and compact the sand mold. The features of the sanding machine are that the sand filling and compaction are carried out at the same time, the structure of the machine is simple, the weight is light, and the adaptability is strong. But the blade is easy to wear and the productivity is low.