目的 提高预制袋包装机的生产效率，实现自动装袋机连续开袋机构的设计。方法 基于回转式充填结构，研究并设计一套预制袋在连续自动充填形式下的开袋机构，实现连续式开袋动作。结果 针对选定的预制袋供送轨迹，设计出了预制袋连续开袋充填结构，可以完成预制袋连续性开袋动作。结论 实现了自动装袋机连续开袋充填机构设计，省去了预制袋充填的间歇等待时间，提高了生产效率。

Design a continuous bag opening mechanisms for automatic bag filling machine to improve the efficiency of plastic bag filling packing machine. A bag opening mechanism of plastic bag under continuous automatic filling was researched and designed based on rotary filling structure so as to realize continuous bag opening. According to the designed plastic bag tracking route, the continuous bag opening and filling structure for plastic bag was worked out. In conclusion, the design that can realize automatic continuous opening and filling will save the waiting time and improve the efficiency.