Discussed in the article are the reasons for the imperfect quality of piecing through the representation of the principles and the key technologies of semiautomatic piecing.

• 通过对转杯纺半自动接头原理和关键技术的阐述,分析其接头质量不理想的原因,进而提出了3种改进措施,包括采用退捻生成纱尾、改变喂给速度和排除损伤纤维。