机械5

手机后外壳注塑模设计 摘要 根据塑料手机后外壳制品的要求，了解塑件的用途，分析塑件的工艺性、尺寸精度等技术要求，选择塑件制件尺寸。本模具采用一模二件，侧浇口进料，注射机采用海天200XB型号，设置冷却系统，CAD和UG绘制二维总装图和零件图，选择模具合理的加工方法。附上说明书，系统地运用简要的文字，简明的示意图和和计算等分析塑件，从而作出合理的注塑模具设计。 按国家职业定义，模具设计是：从事企业模具的数字化设计，包括型腔模与冷冲模，在传统模具设计的基础上，充分应用数字化设计工具，提高模具设计质量，缩短模具设计周期的人员。 模具，是以特定的结构形式通过一定方式使材料成型的一种工业产品，同时也是能成批生产出具有一定形状和尺寸要求的工业产品零部件的一种生产工具。大到飞机、汽车，小到茶杯、钉子，几乎所有的工业产品都必须依靠模具成型。用模具生产制件所具备的高精度、高一致性、高生产率是任何其它加工方法所不能比拟的。模具在很大程度上决定着产品的质量、效益和新产品开发能力。所以模具又有“工业之母”的荣誉称号。 模具设计与制造专业的培养目标是：培养德、智、体、美等方面全面发展，具有良好的职业素质，面向制造行业，从事模具设计、模具加工工艺编制、冲压和塑料成型加工、数控机床的操作以及生产管理等工作的高等技术应用性专门人才。体现为制造方面达到模具制造的补师水平，设计方面达到助理设计师的水平 关键词：手机后外壳；侧浇口；注射机；冷却系统；注塑模具 Abstract Accordi
ng to the requireme
nts of plastic mobile pho
ne rear shell products, u
ndersta
nd the use of plastic parts, a
nalyze the tech
nical requireme
nts of plastic parts, such asworkma
nship, dime
nsio
nal accuracy, choose the size of plastic parts. This mold adopts o
ne mold a
nd two pieces, the side gate feed, the i
njectio
n machi
ne adopts Haitia
n 200XB model, sets the cooli
ng system, CAD a
nd UG draw two-dime
nsio
nal assembly drawi
ngs a
nd parts drawi
ng, a
nd selects the reaso
nable processi
ng method of the mould. Attached are i
nstructio
ns for the systematic use of brief text, co
ncise sketches a
nd calculatio
ns to a
nalyze the plastic parts, so as to make a reaso
nable i
njectio
n mold desig
n. Accordi
ng to the
natio
nal professio
nal defi
nitio
n, die desig
n is e
ngaged i
n e
nterprise die digital desig
n, i
ncludi
ng cavity die a
nd cold stampi
ng die, o
n the basis of traditio
nal die desig
n, the full applicatio
n of digital desig
n tools, improve the quality of die desig
n, shorte
n the die desig
n cycle. Mould is a ki
nd of i
ndustrial productwhich makes the material shape by a certai
nway i
n a specific structural form. It is also a ki
nd of productio
n toolwhich ca
n produce the i
ndustrial product partswith certai
n shape a
nd size requireme
nts i
n batches. From airpla
nes a
nd cars to teacups a
nd
nails, almost all i
ndustrial products must be molded. The high precisio
n, high co
nsiste
ncy a
nd high productivity of the parts ma
nufactured by mould are i
ncomparablewith a
ny other processi
ng method. To a large exte
nt, mold determi
nes product quality, efficie
ncy a
nd
new product developme
nt capability. Therefore, the mold has the ho
nor of the mother of i
ndustry. The trai
ni
ng goal of mold desig
n a
nd ma
nufacturi
ng specialty is to cultivate all-rou
nd developme
nt of morality, i
ntellige
nce, physique a
nd beauty,with good professio
nal quality, a
nd to apply adva
nced tech
nology i
n mold desig
n, mold processi
ng tech
nology preparatio
n, stampi
ng a
nd plastic formi
ng processi
ng, CNC machi
ne tool operatio
n a
nd productio
n ma
nageme
nt, etc. for ma
nufacturi
ng i
ndustry. Professio
nal tale
nts. Embodies the level of makeup for mold ma
nufacturi
ng, a
nd reaches the level of assista
nt desig
ner i
n desig
n. Keywords mobile pho
ne rear shell; side gate; i
njectio
n machi
ne; cooli
ng system; i
njectio
n mold 目录 摘要1 Abstract 2 第1章绪论3 1.1塑料简介3 1.2注塑成型及注塑模3 第2章塑料材料分析5 2．1塑料材料的基本特性5 第3章塑件的工艺分析6 3．1塑件的结构设计6 3．2塑件尺寸及精度7 3．3塑件表面粗糙度7 3．4塑件的体积和质量8 第4章注射成型工艺方案及结构的分析和确定9 4．1、注射成型工艺过程分析[5] 9 4．2浇口种类的确定9 4．3型腔数目的确定10 4．4注射机的选择和校核10 4.4.1注射量的校核11 4.4.2塑件在分型面上的投影面积与锁模力的校核11 4．4．3、模具与注射机安装模具部分相关尺寸校核11 第5章注射模具结构设计13 5．1分型面的设计13 5．2型腔的布局13 5．3浇注系统的设计14 5．3．1浇注系统组成14 5．3．2确定浇注系统的原则14 5．3．3主流道的设计15 5．3．4分流道的设计16 5．3．5浇口的设计17 5．3．6冷料穴的设计17 5．4注射模成型零部件的设计[7] 18 5．4．1成型零部件结构设计18 5．4．2成型零部件工作尺寸的计算19 5．5排气结构设计19 5．6脱模机构的设计20 5．6．1脱模机构的选用原则20 5．6．2脱模机构类型的选择20 5．6．3推杆机构具体设计20 5．7注射模温度调节系统21 5．7．1温度调节对塑件质量的影响21 5．7．2冷却系统之设计规则22 5．8模架的选用22 5.9斜顶机构的设计23 第6章模具材料的选用25 6．1成型零件材料选用25 6．2注射模用钢种25 总结26 致谢28 参考文献29