脉冲造型时,在模板11上装砂箱10(图1)和填砂框9。向其中填砂之后,支上脉冲头1,把整个系统紧固好。将压缩空气从管道15引进脉冲头的贮气罐2。在达到给定的压力时,装置16抬起截止阀3,空气即经孔4、分流器5的内腔及其栅格6上之孔7进入压实腔8,腔8中的气压迅速增高,并直接将型砂紧实。用过的气体经孔12排出。 In the pulse molding, the flask 10 (FIG. 1) and the filling frame 9 are attached to the template 11. After filling the sand, the pulse on the head 1, the entire system fastened. Compressed air is introduced from the pipe 15 into the gas reservoir 2 of the pulse head. When a given pressure is reached, the device 16 lifts the shut-off valve 3 and the air enters the compacting chamber 8 via the bore 4, the inner chamber of the flow divider 5 and the hole 7 in the grid 6, and the pressure in the chamber 8 rapidly increases , And the sand compacting directly. The used gas is discharged through the hole 12.