目的 针对横封机构热封时间不足的问题， 提出一种横封轨迹为D形的旋转往复式横封机构，并分析该横封机构的运动特性。方法 根据包装机横封机构的工艺要求， 求出该机构伺服输入的运动学方程。在 Adams 中建立机构的简易模型， 并将伺服输入的运动学方程作为驱动进行运动学仿真。结果 旋转往复式横封机构能够实现设定的工艺要求， 可以有效地延长横封时间。结论 旋转往复式横封机构丰富了横封机构的种类， 在一定程度上解决了旋转式横封机构和往复式横封机构存在的问题。

Objective Targeting at the deficiency of heat sealing time of the transverse sealing mechanism, a rotary reciprocating traverse type sealing mechanism for D shaped transverse sealing trajectory was put forward, and the motion characteristics of the transverse sealing mechanism was analyzed. Methods According to technological requirements of the traverse seal mechanism of packaging machine, a kinematics equation was proposed for the mechanism servo input. A simple model was built for the mechanism, and kinematics simulation was implemented using Adams software. Results Rotary reciprocating traverse seal mechanism could meet the preset requirements of the technology, and could effectively extend the transverse sealing time. Conclusion Rotary reciprocating traverse seal mechanism enriched the types of the transverse sealing mechanism, which to a certain extent solved the existing problems of rotary type sealing mechanism and reciprocating type traverse sealing mechanism.