机械5

摘要 塑料成型工艺设计与模具设计是模具设计师、模具制造工等职业工种的基本要求，是模具行业高技能人才必须掌握的技能，也是高职模具设计与制造专业最为重要的专业核心课程之一。现在社会上模具的应用非常广泛，身边需要使用模具做出来的东西非常多，由此可见，模具在现在社会上占着很重要的位置，模具的设计则是为了能更好制造模具。塑料，与我们周围无处不在。在国民经济的发展中，塑料产品几乎涉及了所有的领域，在航空航天、交通运输、邮电通信、仪器仪表、家用电器等行业中塑料更是必不可少的材料。而塑料产品的制造需要大量的模具对其进行成型。我设计的塑件是水杯杯盖，根据水杯杯盖塑件的要求，了解塑件的用途，分析塑件的工艺性、尺寸精度等技术要求，考虑塑件制件尺寸。本模具采用一模四腔，侧浇口进料，注射机采用XS-ZY-125型号，设置冷却系统，CAD和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。 关键词：水瓶瓶盖；一模四腔；侧浇口进料；注射机；冷却系统；注塑模具 Abstract Plastic formi
ng process desig
n a
nd die desig
n are the basic requireme
nts of die desig
ner a
nd die ma
nufacturer. They are the skills that must be mastered by high-skilled tale
nts i
n die i
ndustry. They are also o
ne of the most importa
nt core professio
nal courses i
n die desig
n a
nd ma
nufacturi
ng specialty i
n Higher Vocatio
nal colleges. Nowadays, the applicatio
n of dies is very exte
nsive i
n society. There are ma
ny thi
ngs that
need to be made by dies. It ca
n be see
n that dies play a
n importa
nt role i
n society. The desig
n of dies is to make dies better. Plastics are everywhere with us. I
n the developme
nt of
natio
nal eco
nomy, plastic products cover almost all fields. Plastics are i
ndispe
nsable materials i
n aerospace, tra
nsportatio
n, posts a
nd telecommu
nicatio
ns, i
nstrume
ntatio
n, household applia
nces a
nd other i
ndustries. The ma
nufacture of plastic products requires a large
number of moulds to shape them. The plastic part I desig
ned is the cup cap. Accordi
ng to the requireme
nts of the cup cap plastic parts, u
ndersta
nd the use of the plastic parts, a
nalyze the tech
nical requireme
nts of the plastic parts, such as workma
nship, dime
nsio
nal accuracy, a
nd co
nsider the size of the plastic parts. This mold adopts a mold four cavity, the side gate feed, the i
njectio
n machi
ne uses the XS-ZY-125 model, sets the cooli
ng system, CAD a
nd draws the two-dime
nsio
nal assembly pla
n a
nd the part drawi
ng, chooses the mold reaso
nable processi
ng method. Attached is a
n i
nstructio
n book, which systematically uses simple words, simple sketches a
nd calculatio
ns to a
nalyze plastic parts, so as to make a reaso
nable desig
n of i
njectio
n moulds. Key words: water bottle cap; o
ne mold four cavity; side gate feed; i
njectio
n machi
ne; cooli
ng system; i
njectio
n mold 目录 摘要II Abstract III 第1章绪论1 1.1塑料简介1 1.2注塑成型及注塑模2 第2章注塑件的设计4 2.1功能设计4 2.2塑件的材料选择4 2.3塑件的结构5 2.3.1塑件的尺寸、公差和表面质量5 2.3.2塑件表面粗糙度6 2.4计算塑件的体积、质量6 第3章塑件成型方案设计7 3.1分型面选择7 3.2型腔数的确定8 3.3型腔布局8 3.4浇注系统的类型和位置的选择8 3.4.1浇注系统组成9 3.4.2确定浇注系统的原则9 3.5成型零件结构设计9 3.5.1型腔设计10 3.5.2型芯设计11 3.6脱模机构的设计11 3.6.1脱模机构的选择11 3.6.2推杆推出机构设计11 3.6.3脱模力的计算12 3.7导向与定位机构设计13 3.8排气及引气系统的设计14 3.9模温调节系统的设计15 3.10模架选用17 3.10.1确定模具的基本类型17 3.10.2模架的选择17 第4章模具零件设计19 4.1模具成型零件尺寸计算19 4.2模具强度与刚度校核20 4.3脱模力的计算20 4.4浇注系统的设计21 4.4.1主流道的设计21 4.4.2分主流道的设计23 4.4.3浇口的设计23 4.5模具冷却系统的设计24 第5章注射机的选用及相关参数的校核25 5.1相关参数27 5.2最大注塑量校核27 5.3锁模力校核28 5.4模具与注塑机安装部分相关尺寸校核28 5.5开模行程校核29 第6章注塑模具工作原理30 总结32 致谢33 参考文献34