机械5

摘要 当前汽车车灯接线盒注塑成型工艺方法很多，为了进一步提高生产效率，节约生产成本，本文在现有的注塑成型工艺冷却方面做了进一步改进，选择在型芯上开设冷却水道，希望缩短冷却过程，从而提高生产效率。 本文主要介绍了经过优化型芯冷却系统后的汽车车灯接线盒注塑模设计、塑料成形工艺以及注塑的过程，也对注塑机也进行了一些简单的介绍。主要设计过程有：塑料制品的工艺分析，型腔数目的确定，型芯冷却系统的设计，注塑机的选择以及模具的结构设计。本文设计的是一模四腔两板式模具，由于汽车车灯接线盒的特殊形状，可以直接脱模，本文对模具的各部分零件进行了设计与计算。在完成了一系列计算和构想之后，利用三维软件画出注件的三维图，并设计好浇注系统、开模方向，然后进行开模仿真，在确定无误之后，利用EMX7.0设计模架，在完成模架设计之后，利用装配方法把整套模具完成整体设计并导出总装配图。 通过采用组合式型芯，并在型芯块上设计螺旋状冷却水道的冷却系统措施后，注塑过程中注件得到了良好的散热，提高了注件生产效率。在现有的工艺上做了改善之后，汽车车灯接线盒的注塑过程大大缩短，既提高了生产效率，同时也节约了生产成本。 关键词：汽车车灯接线盒；冷却系统；注塑机；注塑模；一模四腔 Abstract I
n order to improve the productio
n efficie
ncy a
nd save the productio
n cost, the curre
nt i
njectio
n moldi
ng process of automobile lamp ju
nctio
n box is improved. The cooli
ngwater cha
n
nel is set up o
n the core, so the cooli
ng process ca
n be shorte
ned so as to improve the productio
n efficie
ncy. This paper mai
nly i
ntroduces the i
njectio
n mold desig
n, plastic formi
ng process a
nd i
njectio
n moldi
ng process of automobile lamp ju
nctio
n box after the optimized core cooli
ng system, a
nd also i
ntroduces some simple i
ntroductio
n to the i
njectio
n moldi
ng machi
ne. The mai
n desig
n processes are: the process a
nalysis of plastic products, the determi
natio
n of the
number of the cavity, the desig
n of the core cooli
ng system, the selectio
n of the i
njectio
n moldi
ng machi
ne a
nd the structure desig
n of the mould. This desig
n is the first mock exam four cavity two plate mold, due to the special shape of automobile lampwiri
ng box, ca
n directly release, the mold parts of the desig
n a
nd calculatio
n. After a series of calculatio
ns a
nd ideas have bee
n completed, three-dime
nsio
nal software is used to draw the 3D drawi
ngs of the i
njectio
n parts, a
nd the casti
ng system a
nd the directio
n of the die are desig
ned, the
n the model simulatio
n is carried out. After the error is determi
ned, EMX7.0 is used to desig
n the mold frame. After the desig
n of the mold is completed, thewhole set of moulds is desig
ned a
nd guided to complete thewhole desig
n a
nd guide. A ge
neral assembly drawi
ng. After the combi
ned core is adopted a
nd the cooli
ng system of the spiral cooli
ngwater cha
n
nel is desig
ned o
n the core block, good heat dissipatio
n is obtai
ned i
n the i
njectio
n process, a
nd the productio
n efficie
ncy of the i
njectio
n parts is improved. After improvi
ng the existi
ng tech
nology, the i
njectio
n process of the car lamp ju
nctio
n box is greatly shorte
ned,which
not o
nly improves the productio
n efficie
ncy, but also saves the productio
n cost. Keywords: automobile lamp ju
nctio
n box; cooli
ng system; i
njectio
n moldi
ng machi
ne; i
njectio
n mould; the first mock exam four cavity 目录 摘要I Abstract II 第1章绪论1 1.1模具行业的发展1 1.2注塑工艺概述2 1.2.1注塑工艺发展的现状2 1.2.2注塑工艺发展趋势3 1.3 CAD/CAM/CAE及Pro/E的发展趋势3 1.4注塑模具概述5 1.5课题研究的目的和意义5 第2章模具设计方案6 2.1汽车车灯接线盒二维图6 2.2塑件材料7 2.2.1塑料材料的基本特性7 2.2.2塑件材料成型性能9 2.2.3塑件材料主要用途10 2.3塑料制品的工艺分析10 2.3.1脱模斜度11 2.3.2塑件的壁厚11 2.3.3支承面12 2.3.4材料的成型收缩率12 2.3.5尺寸精度和表面粗糙度13 2.4注塑过程的特点13 2.5型腔数目的确定14 2.6注塑机的选择15 第3章浇注系统的设计20 3.1设计浇注系统基本要点20 3.2主流道设计21 3.2.1主流道的作用21 3.2.2主流道（浇口套）设计基本要点21 3.3分流道设计22 3.3.1分流道的作用22 3.3.2分流道的类型23 3.4浇口设计23 3.4.1浇口的作用23 3.4.2浇口的类型23 3.5冷料穴设计25 3.6排气槽设计25 第4章成型零件的结构设计26 4.1成型零件结构设计26 4.2型芯冷却系统的设计29 4.3模架的选用31 4.4导向机构的设计34 4.5脱模机构的设计34 4.5.1顶杆的设计35 4.5.2顶料板的设计36 4.6顶杆的复位36 装配图38 总结39 致谢40 参考文献41