机械5

摘要 此以蓝牙耳机外壳为设计模型，以塑胶模具设计与制造，模具加工工艺的相关知识作为依据，讲述整个蓝牙耳机外壳注塑模具设计过程。设计初期首先使用UG软件进行蓝牙耳机外壳的实体造型。然后分析得到最佳注射点和注射方式。最后明确设计思路，确定成型工艺。模具结构可采用一模两腔，侧浇口进料，注射机采用海天80×A型号，并对其相关的数据进行校核。首先根据UG软件设计出分型面，进而设计出型腔、型芯。通过各种手册选择标准模架的绘制，并且进行分型面的选择、浇注系统、脱模机构、冷却系统、标准模架的选用等模具重要结构的设计。塑件内部倒扣可采用斜顶抽芯机构，利用推出机构的推力驱动斜导柱斜向运动，在制品被推出脱模的同时由斜导柱完成侧向抽芯动作。 此结构可确保模具工作运行平稳并保证配件之间的配合精度，通过对蓝牙耳机外壳注塑模具的设计，帮助我总结并深化了所学的模具设计，模具加工工艺的相关知识，达到了我的设计意图。 关键词：蓝牙耳机外壳；注塑模具；一模两腔；侧浇口；注射机；型腔；型芯 Abstract This paper takes the Bluetooth headset shell as the desig
n model, based o
n the k
nowledge of plastic mold desig
n a
nd ma
nufacturi
ng, a
nd mold processi
ng tech
nology, describes thewhole i
njectio
n mold desig
n process of Bluetooth headset shell. At the begi
n
ni
ng of the desig
n, UG softwarewas used to model the Bluetooth headset shell. The
n the best i
njectio
n poi
nt a
nd i
njectio
n modewere obtai
ned. Fi
nally, the desig
n idea a
nd the formi
ng process are defi
ned. The mold structure ca
n be usedwith o
ne mold a
nd two cavities, a
nd the side gate feed. The i
njectio
n machi
ne adopts Haitia
n 80x A model, a
nd check the releva
nt data. Firstly, the parti
ng surface is desig
ned accordi
ng to UG software, a
nd the
n the cavity a
nd core are desig
ned. The drawi
ng of sta
ndard die base is selected throughvarious ma
nuals, a
nd the desig
n of importa
nt die structures such as selectio
n of parti
ng surface, gati
ng system, demouldi
ng mecha
nism, cooli
ng system a
nd selectio
n of sta
ndard die base are carried out. The core pulli
ng mecha
nismwith i
ncli
ned top ca
n be used for i
nter
nal buckli
ng of plastic parts. The oblique motio
n of the oblique guide pillar ca
n be drive
n by the thrust of the pushi
ng mecha
nism. The lateral core pulli
ng actio
n ca
n be completed by the oblique guide pillarwhe
n the product is pushed out of the mould. This structure ca
n e
nsure the smooth operatio
n of the die a
nd e
nsure the accuracy of the parts. Through the desig
n of i
njectio
n mould for Bluetooth headset shell, it helps me summarize a
nd deepe
n the k
nowledge of the die desig
n a
nd processi
ng tech
nology, a
nd achieves my desig
n i
nte
ntio
n. Keywords: Bluetooth headpho
ne shell; i
njectio
n mold; o
ne mold two cavity; side gate; i
njectio
n machi
ne; cavity; core. 目录 摘要I Abstract II 前言1 1塑件的材料及工艺分析2 1.1塑件的材料分析3 1.2塑件的结构设计4 1.3塑件尺寸及精度5 1.4塑件表面粗糙度5 2注射成型工艺方案6 2.1注射成型工艺过程分析6 2.2浇口种类的确定7 2.3型腔数目的确定7 2.4注射机的选择和校核7 2.4.1注射量的校核8 2.4.2塑件在分型面上的投影面积与锁模力的校核8 2.4.3模具与注射机安装模具部分相关尺寸校核9 3注射模具结构设计11 3.1分型面的设计11 3.2型腔的布局12 3.3浇注系统的设计12 3.3.1浇注系统组成12 3.3.2确定浇注系统的原则12 3.3.4分流道的设计15 3.3.5浇口的设计15 3.3.6冷料穴的设计16 3.4注射模成型零部件的设计[7] 16 3.4.1成型零部件工作尺寸的计算16 3.4.2成型零部件结构设计17 3.5排气结构设计21 3.6脱模机构的设计21 3.6.1脱模机构的选用原则21 3.6.2脱模机构类型的选择22 3.6.3顶杆和斜顶机构具体设计22 3.7注射模温度调节系统23 3.7.1温度调节对塑件质量的影响23 3.7.2冷却系统之设计规则24 3.8模架的选用24 3.9侧向抽芯机构类型选择26 3.10斜顶的设计28 4模具材料的选用32 4.1成型零件材料选用32 4.2注射模用钢种32 5注塑模工作原理33 总结34 致谢34 参考文献35