从车顶框后端底侧起，用紧固螺钉紧固活顶罩。

Fasten the convertible -top covering with the fastening screws starting from the rear bottom side of the roof frame.

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所 述主框架包括底盘、四根立柱、以及矩形顶框；

Wherein, the main frame is composed of a chassis, four upright posts and a rectangular upper frame;

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通过对电冰箱顶框的结构工艺分析，介绍了该模具的结构设计和工作过程。

By analyzing the structure process of fridge top frame, the mold structural design and working process are introduced.

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