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The complete injection process is called a molding cycle. The period between the start of the injection of the melt into the ‍‍mold cavity‍‍ and the opening of the mold is called the clamp close time. The total injection cycle time consists of the clamp close time plus the time required to open the mold, eject the plastic part, and close the mold again, the injection molding machine transfer the resin into molded parts through a melt down, injection, pack, and cool down cycle. A plastic injection molding machine includes the following major components as below.

 top view   ----俯視圖
front view   ----前視圖
side view   ----側視圖
plane view ----平面圖
contour  ------外型銑削
pocket  ------挖槽
flow line   ----罩一曲面
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 模具技术用语
1． XXX！你现在有空吗，我可以问你一些问题吗？

Could I ask you some questions if you are free?/ Are you free now? May I ask you some questions (aquestion)?

2． 请问此产品的面是否为外观面？表面做什么处理？是晒纹/抛光？

Can you tell me whether the surface of this part is a visible/esthetic one? What will we do for its

一、入水：gate
　　进入位：　gate location
　　水口形式：gate type
　　大水口：edge gate
　　细水口： pin-point gate
　　水口大小：gate size
　　转水口：　switching runner/gate
　　唧嘴口径：　sprue diameter
　　二、流道: runner
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A Gate is a small area between the runner and the part cavity.  The type, size and location of a Gate in an injection mold is critical to efficiently producing quality parts. 

    The type of gate selected depends on many factors including: 

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Considered the third phase of the Injection Molding Cycle, the Cooling Phase consumes the greatest amount of time. Therefore, it is a serious area for designers and mold makers to make sure that all Coolant schemes have been thoroughly investigated for their suitability.

Slide Action requires several mechanical components to enable the molding of complex part geometry.   Slides are usually used for exterior action, and typically pull a core located on the "B" side of the mold.
 

一、设计依据
尺寸精度与其相关尺寸的正确性。
根据塑胶制品的整个产品上的具体要和功能来确定其外面质量和具体尺寸属于哪一种：
外观质量要求较高，尺寸精度要求较低的塑胶制品，如玩具；
功能性塑胶制品，尺寸要求严格；
外观与尺寸都要求很严的塑胶制品，如照相机。
脱模斜度是否合理。
脱模斜度直接关系到塑胶制品的脱模和质量，即关系到注射过程中，注射是否能顺利进行：
脱模斜度有足够；
斜度要与塑胶制品在成型的分模或分模面相适应；是否会影响外观和壁厚尺寸的精度；
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