目的 以锁底式纸盒为研究对象，研究其底部机械化折叠的实现方式。方法 通过分析锁底式纸盒底部折叠动作的工艺要求和技术原理，探讨自动折叠装置关键执行机构的设计与布局，利用adams对重要机构进行优化。结果 通过各执行机构的协调动作实现了纸盒底部的折叠成形，优化后的机构增大了纸盒的尺寸折叠柔性。结论 基于传统人工折叠工艺，依据机械设计理论，制定出合理的机械折叠工艺，完成了自动折叠装置的设计。

The work aims to study the mechanized folding of the carton bottom with the bottom-locked carton as the study object. By analyzing the process requirements and technical principles of the bottom folding of bottom-locked carton, and discussing the key actuator’s design and layout of automatic folding device, the important mechanism was optimized with adams. The bottom folding of carton was achieved through the coordinated action of each actuator. The optimized mechanism greatly improved the dimensional folding flexibility of the carton. A reasonable mechanical folding process is formulated based on the traditional manual folding process and mechanical design theory, with which the automatic folding device is designed.