DFM English and design Principles
一．产品信息：Product information
1. 外观 ： Surface Appearance 2. 光洁度：Glossiness/gloss finish 3. 毛面： Matt finish/matt surface 4. 皮纹粒度： Grain
5. 特殊皮纹区域：Special area texture 6. 塑料色母: Master batch
7. 烫金/涂层/印刷/雾晕 Hot stamping/ coating/
print/ haze 8. 仿皮革: leather cloak 9. 电火花纹 ：EDM
10. 光化学腐蚀法：Photochemical etching 11. 刷涂纹，拉丝纹 Brushing 12. 激光雕刻：Laser engraving
二．浇口类型：Gate type
自动脱模浇口 Automatic gate
1.潜伏式浇口：Submarine gate
2.香蕉形浇口：Cashew gate， banana gate 3.针点式浇口：Pin gate 4.热浇道口： Hot drop 5针阀浇口： Valve gate
13. 喷砂：Sand blasting
1. 设计版本: Design revision 2. 产品重量： part weight 3. 注射重量： Shot weight 4. 流道重量： Runner weight 5. 驻留时间： Resident time 6. 缩水率： Shrinkage 7. 最终外观：Cosmetic finishing: 8. 塑胶材料：Resin material 9. 塑胶等级： Resin Grade 10. 产品体积： part volume
手动整理浇口Manual gate
1.边缘浇口：Edge gate
2.凸耳浇口：Tab gate overlap gate 3.直接浇口：Sprue gate 4.隔膜浇口：Diaphragm gate 5.环形浇口：Ring gate 6.扇形浇口：Fan gate 7.薄膜浇口：Flash gate
8.过滤器瞟浇口：Filter Rowl gate
说明：illustrate
? 浇口进入位：Gate location ? 浇口大小： Gate size
? 转水口： Switching runner / gate ? 唧嘴口径： Sprue diameter
? 水口殘留最大0.1mm. The maximal residual gate is 0.1mm. Gates Vestige will be 0.1mm ? 此水口会用CNC铣平: The gate will be milled to flat by CNC. ? 此位会作凹陷 Here will be recess.
? 浇口需要冲床机器二次加工来去除：Gates need 2nd process remove by stamping machining ? 透明件不宜用香蕉浇口，易见流痕：The banana gate does not suite the transparent part. Flow mark is visible.
? 最终的进胶位置根据模流分析：Finally gate position according the mold flow analysis. ? 顶出后额外的墙被切掉: Extra wall to be cut away after ejection
? 是否可以添加一个小肋骨用来放潜水口,成型后再删除它如果必要的话： Is it possible to add one small rib to place sub gate, after molding remove it by operator if necessary
三．流道: runner
? 冷流道： Cold runner
1.唧嘴直流: Direct sprue gate 2.圆形流道：Round(full/half) runner
3.正圆形： Full Round （最有效）Most Efficient 4.梯形： Trapezoidal (有效 ）Good
? 冷料井 — cold slug well
说明：illustrate
5.半圆形： Half Round （非有效）Not Good
? 热流道： Hot runner
1.热流道板：Hot manifold
2.热嘴转冷流道: hot sprue turn to cold runner 3.热流道转冷流道: hot tips turn to cold runner
? 单嘴阀针式热流道转冷流道: 1 drops valve nozzle to cold runner ? 单嘴尖点式热流道转冷流道: 1 drops tip nozzle to cold runner ? 单嘴开放式热流道转冷流道: 1 drops open nozzle to cold runner
? 2点针阀式直接进胶: Hot runner 2 drops valve nozzle direct to part ? 喷嘴Nozzle
设计原则： Design principles
? 根据模流分析结果最后确定浇口位置：Finally gate position according the mold flow analysis ? 检查流动长度在薄壁产品： check flow length in thin walled part
? 竖浇道太长了约有200mm長. 冷流道系统流动不均, 推荐使用热流道以使流动较佳. The sprue will be too long if we use cold runner design. Its length is around 200 millimeters，Flow imbalance by cold runner，We recommend a hot runner system for better flow.
? 浇道系统应该有一个均衡的布局：Runner system should have a balanced layout ? 省料：Savings in material ? 周期短：Shorter cycles
? 浇口在最佳位置：Gates at the best position ? 压力降最小：Pressure losses minimized
? 人工系统流道平衡：Artificial balancing of the gate system ? 避免焊缝线: Avoidance of weld line ? 纤维取向: Fiber orientation
? 避免迟滯效应：Avoid the hysteresis effect ? 避免潜流： avoid underflow
? 所有的流道都要有冷料井：All runners are to have cold slug wells
? 多型腔模具浇口尺寸必须相同，平衡必须经过调整流道 而不是调整浇口。 Gates in multi-cavity molds shall be the same size. Balancing shall not be done by differing gate sizes. Runners should be changed to balance mold filling and not gates ? 材料的弹性是否符合用潛澆口：material flexibility for sub gate ? 正確的流道尺寸能否滿足成型周期的要求： Runner sizes correct and adequate for required cycle time
DFM-English-and-design-Principles
