The injection compression molding machine is the use of compressed air injected into the sand box sand evenly pretension real, and then put pressure on the compaction. Common type of injection compression molding machine and the level of vertical type box off box injection compression molding machine. Vertical type tank injection compression molding machine shape without sand box, sand directly into the shape of rooms, with a template made, sand-size precision, sand box has a cavity on both sides, high productivity, but the next core difficulties on the sand stringent quality requirements. Horizontal box off the injection compression molding machine sand box modeling, sand made ​​co-off box, under the core to facilitate high productivity.