目的 设计一种符合块状包装物横封要求的横封机构，以更好满足横封的工艺要求。方法 在分析块状物体横封工艺过程基础上建立傅里叶非圆齿轮数学模型，根据工艺要求建立目标函数以及横封机构参数优化模型，并通过实例进行验证。结果 通过实例计算可知，优化设计得到的傅里叶非圆齿轮能更好满足设计要求，比原有传统偏心圆具有更高的灵活性。结论 采用更加灵活的傅里叶非圆齿轮副驱动横封机构对横封机构参数进行优化设计，能够更好地满足块状物体横封工艺要求。

The work aims to design a transverse sealing mechanism that conforms to the transverse sealing requirements for massive packages, so as to better meet the requirements of transverse sealing process. Based on the analysis of transverse sealing process of the massive objects, the mathematical model for the Fourier non-circular gear was established. According to the process requirements, the objective function was established, the parameter optimization model for the transverse sealing mechanism was established, and the correctness of the model was verified by an example. It can be seen from the example that the optimally designed Fourier non-circular gears could better satisfy the design requirements and have higher flexibility than the conventional traditional eccentric circles. The transverse sealing mechanism parameters are optimally designed by adopting the more flexible transverse sealing mechanism of Fourier non-circular gear pair drive, which can better meet the transverse sealing requirements for massive objects.