机械5

喇叭花形塑料灯罩的注塑模具设计 摘要 对塑料喇叭花形灯罩的注射模结构采用侧浇口的进料，一模两腔的模具结构，所用材料是透明性好，着色性、化学稳定性较好的PS（聚苯乙烯）。通过对塑件成型过程进行了分析，对聚苯乙烯塑料的性能分析，成型零件设计等，制定出了一套完整的生产塑料喇叭花形灯罩的生产流程。 根据对实物的测绘，采用产品设计的相关知识，利用其制图版块绘制出二维工程图，然后再进行模具设计，确定分型面的位置和型腔数量，创建模具的型腔和型芯等等，设计出模具，最后生成工程图。 关键词：灯罩；注射模；侧浇口；一模两腔;成型零件; Abstract The i
njectio
n mold structure for Plastic Bell Flower lampshade adopts the structure of side gate feed, o
ne mold a
nd two cavities, a
nd the material used is PS (polystyre
ne) with good tra
nspare
ncy, colori
ng a
nd chemical stability. Through the a
nalysis of the moldi
ng process of plastic parts, the performa
nce a
nalysis of polystyre
ne plastics a
nd the desig
n of moldi
ng parts, a complete set of productio
n process for the productio
n of plastic bell shaped lampshade is worked out. Accordi
ng to the surveyi
ng a
nd mappi
ng of the object, the two-dime
nsio
nal e
ngi
neeri
ng drawi
ng is draw
n by usi
ng the related k
nowledge of product desig
n, a
nd the
n the mold desig
n is carried out to determi
ne the positio
n of parti
ng surface a
nd the
number of cavity, create the cavity a
nd core of the mold a
nd so o
n. The mold is desig
ned a
nd the e
ngi
neeri
ng drawi
ng is fi
nally ge
nerated. Key words lampshade; i
njectio
n mold; side gate; o
ne mold two cavities; moldi
ng parts; 目录 摘要 Abstract II 前言1 1.概述2 1.1塑料模具设计目的2 1.2塑料模具设计要求2 1.3塑料模具设计的步骤2 2.塑件成型工艺的可行性分析2 2.1塑件的分析3 2.2塑件材料性能分析3 2.3 UG中实体建模4 3.模具的结构型式和注射机的初步确定4 3.1分型面的确定5 3.2型腔数量和排列方式的确立5 3.3注射机型号的确定6 4.浇注系统的设计8 4.1浇注系统基本要点8 4.2主流道的设计9 4.3分流道的设计10 4.4浇口的设计11 4.5浇注系统的平衡13 4.6冷料穴的设计13 5.成型零件的设计14 5.1成型零件设计要点14 5.2成型零件的结构设计15 5.3成型零件工作尺寸的计算16 6.模架的确定和标准件的选用17 6.1模架的选定17 6.2标准件的选用18 7.合模导向机构的设计19 7.1导向机构的整体设计19 7.2导柱设计19 7.3导套设计20 8.脱模机构的设计21 8.1脱模机构和设计原则21 8.2塑件的推出基本方式21 8.3塑料灯罩的推出机构22 9.排气系统的设计22 9.1排气系统方式22 9.2排气槽的开设注意事项及尺寸22 10.温度调节系统的设计23 结束语25 致谢26 参考文献27