塑料模课程设计

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1、塑料成型工艺与模具设计课程设计说明书设计课题：连接座成型模具设计设计者:专业:模具设计与制造班级:设计时间:2010年5月指导老师:目录塑料成型工艺与模具设计课程设计任务书····················11编制塑件成型工艺卡·········································22塑件成型工艺分析与设计·····································32.1ABS特性··················································32.2塑件原材料成型性能·············

2、····························32.3塑件的结构和尺寸精度、表面质量分析·························42.4塑件成型方法确定···········································43塑件成型模具设计············································43.1型腔的数量和布置···········································43.2选择注塑机型号及其参数·····································43.

3、3确定分型面·················································63.4浇注系统选择和设计·········································63.5成型部件的设计计算·········································83.6排气系统设计···············································93.7模架的确定和标准件选择（示意图）·····························93.9温度调节系统设计············

4、·······························103.10推出机构（脱模）设计·······································113.11导向机构设计···············································114设计小结·····················································115参考文献······················································11附录（模具总装图和零件图）············

5、························11“塑料成型工艺与模具设计”课程设计任务书课题设计名称：连接座的注射模设计塑件图：塑件名称连接座材料ABS厚度35工件精度设计内容：1、编制模塑成型工艺规程（即填写“塑件成型工艺卡”）2、绘制塑件注射模总装图（A3图纸1张）3、绘制该模具凸模、凹模的零件图各一套（A3图纸多张）4、编写完善模具设计说明书（按A4打印纸装订）1塑件成型工艺卡塑件成型工艺卡塑件名称塑件草图材料牌号ABS单件重量25.9g成型设备型号XS-ZY-125每模件数1成型工艺参数材料干燥干燥设备名称烘箱温度/℃80~90时间/h2~3成型过程料筒温度后段/℃1

6、50~170中段/℃165~180前段/℃180~220喷嘴/℃170~180模具温度/℃50~80时间注射/s20~90保压/s0~5冷却/s20~120压力注射/MPa60~100保压/MPa后处理温度/℃70时间/min120~240编制日期审核日期2塑件成型工艺分析与设计2.1ABS的特性（1）化学和物理特性ABS是由丙烯腈、丁二烯和苯乙烯共聚物三种化学单位合成，每种单体都有不同特性；丙烯腈有高强度，热稳定性及化学稳定性；丁二烯具有坚韧性，抗冲击特性；苯乙烯具有易加工，高光洁及高强度。从形态上看，ABS是非结晶性材料。三种单体的聚合产生了具有两相的三元共聚物，一个是苯乙烯

7、—丙烯腈的连续相，另一个是聚丁二烯胶分散相。这就决定了ABS材料的耐高温性、抗冲击性及易加工性等多种特性。缩水率为0.5%。ABS有良好的机械强度和一定的耐磨性、耐寒性、耐油性、耐水性、化学稳定性和电气性能，有一定的硬度和尺寸稳定性，易于成型加工且易着色，几乎不受酸、碱、盐及水和无机化合物的影响。密度为1.08~1.2g/cm3使用温度在－40~100℃，紫外线作用下容易氧化分解。（2）典型应用范围水箱外壳、蓄电池槽、电机外壳、齿轮、把手等等。（3）ABS注塑模工艺条件干燥：AB