根据功能设计的思想，采用自顶向下模式，给出一个并行协同环境下注塑模具装配设计系统的框架，对功能至产品演化过程中的数据模型进行了分析。

Based on the idea of function design, an architecture of the assembly design system for injection mould in concurrent and collaborative environment was presented using top down pattern.

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文中从产品知识表达存在的问题出发，提出了基于本体的产品知识表达四层模型，即结构层—行为层—基本功能层—元功能层，给出了各层本体的表示模式。

Because some problems are in the product knowledge representation, so gives the four layers to solve it, which contains the structure layer, behavior layer, basic-function layer and meta-function lay.

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