本文分析了折叠式轮胎成型机头的运动及动力特性,给出了稳定性的概念及评价指标。在此基础上研究了利用等式约束与不等式约束的惩罚函数法对平面多杆机构进行尺度最优综合的有关问题。提出了折叠式轮胎成型机头设计的最优化方法。并给出了计算实例。 This paper analyzes the movement and dynamic characteristics of folding tire forming machine head, gives the concept of stability and evaluation index. On this basis, the paper studies the problem of using the penalty function method with equality constraints and inequality constraints to optimize the scale of planar multi-bar mechanism. The optimal design method of folding tire forming head is proposed. A calculation example is given.