从二十世纪二十年代到五十年代,气动震压式造型机就一直是铸工车间中最主要的造型设备。但近二十多年来,由于出现了多触头高压造型机、射压造型机等现代化自动造型设备,特别是由于传统的砧座式震压机构被气动微震机构所取代,形成一种新型的气动微震压实造型机原来的震压式造型机就处于被淘汰的地位。因为气动微震机构有比砧座式震击机构的震 From the twenties of the twentieth century to the fifties, the pneumatic vibrator has been the most important modeling equipment in the foundry. However, over the past 20 years, due to the emergence of multi-contact high-pressure molding machine, injection molding machine and other modern automatic molding equipment, in particular, is due to the traditional antivibration mechanism was replaced by pneumatic microseismic institutions to form a new type The original pneumatic micro-vibration compaction molding machine vibration-type machine was in a position to be eliminated. Because the pneumatic microseismic mechanism than the anvil-type shock mechanism of the earthquake