分析了广口瓶旋盖机的工作原理，广口瓶包装容器的结构特点和封口原理，以及广口瓶旋盖机旋盖失效现象，结合试验寻找了导致旋盖失效的原因。在此基础之上，提出了具有一定柔性适应能力的创新性方案，以降低广口瓶旋盖机的旋盖失效率，从而使广口瓶旋盖机旋盖质量大大提高。

Working principle of jar capping machine, structure characteristics of jar packaging container, sealing principle, and failure of jar capping machine capping were analyzed. The cause of capping failure was analyzed thorough tests. A solution with certain flexible adaptability and feedback ability was proposed to reduce failure rate and improve capping quality of jar capping machine.