机械5

摘要 我们以社会实际产品为课题，设计一套能够生产所给塑件、结构合理、能保证制品的精度、表面质量的塑料模具，能熟练使用UG、CAD绘图。使我们在塑件结构设计、塑料成型工艺分析、塑料模具数字化设计、塑料模具零件的选材、热处理、塑料模具零件的制造，以及资料检索、英文翻译等方面获得综合训练，为缩短工作适应期奠定坚实的基础本设计的重点内容有以下几点：（1）要明确塑件设计要求：仔细阅读塑件制品零件图，从制品的塑料品种，塑件形状，尺寸精度，表面粗糙度等各方面考虑注塑成型工艺的可行性和经济性，必要时，要与产品设计者探讨塑件的材料种类与结构修改的可能性。（2）运用UG及CAD软件完成模具设计：分型面应选在塑件外形最大轮廓处，满足塑件的外观质量要求。（3）模具结构设计：塑件成型位置及分型面选择；模具型腔数的确定，型腔的排列和流道布局以及浇口位置设置；模具工作零件的结构设计；顶出机构设计；排气方式设计。（4）模具总体尺寸的确定和选购模架：模架已逐渐标准化，选定模架，在以上模具零部件设计基础上初步绘出模具的完整结构图。（5）模具结构总装图和零件工作图的绘制：模具总图绘制必须符合机械制图国家标准，模具总装图应该包括必要尺寸，如模具闭合尺寸，外形尺寸，特征尺寸，装配尺寸，极限尺寸及技术条件，编写零件明细表等。 关键词：ABS；弯板；注射模具；推板机构；薄壁塑件；模具设计 Plastic be
ndi
ng plate i
njectio
n moldi
ng process a
nd mold desig
n Abstract We take the actual product of societyas the subject,desig
n a set of productio
n for plastic parts,reaso
nable structure,ca
n guara
ntee the precisio
n plastic mold,the surface qualityof the products,able to skillfullyuse PROE,CAD/CAM mappi
ng,CAE a
nalysis software.We make the plastic parts i
n the structure desig
n,plastic moldi
ng process a
nalysis,plastic mold,plastic mold parts of the digital desig
n a
nd material selectio
n,heat treatme
nt,plastic mold ma
nufacturi
ng,comprehe
nsive trai
ni
ng a
nd i
nformatio
n retrieval,E
nglish tra
nslatio
n a
nd so o
n,i
n order to shorte
n thework period to laya solid fou
ndatio
n for the desig
n of the mai
n co
nte
nt is as follows:(1)to clear plastic parts desig
n requireme
nts: read the product parts,products from plastic,plastic parts shape,size precisio
n,co
nsideri
ng the feasibilitya
nd eco
nomyof the i
njectio
n moldi
ng process of all aspects of the surface rough
nesswhe
n
necessary,to explore the possibilityof modifyi
ng the material type a
nd structure of plastic parts a
nd products the desig
ner.(2)usi
ng UG a
nd CAD software to complete the mold desig
n: parti
ng surface should be i
n shape to meet the requireme
nts of maximum co
ntour,the appeara
nce qualityof plastic parts.(3)die structure desig
n: moldi
ng positio
n a
nd parti
ng surface selectio
n; determi
ne the mold cavity
number,cavityarra
ngeme
nt a
nd ru
n
ner layout a
nd gate locatio
n desig
n; structure desig
n of die parts; ejectio
n mecha
nism desig
n; exhaust system desig
n.(4)to determi
ne the overall size of the mold a
nd the selectio
n of mold: mold has bee
n graduallysta
ndardized,the selected frame,complete structure desig
n based o
n the above prelimi
narydrawmold parts mold.(5)drawi
ng die assemblydrawi
ng a
nd parts drawi
ng: drawi
ng die drawi
ng must complywith the
natio
nal sta
ndard of mecha
nical drawi
ng,mold assemblydrawi
ngs should i
nclude the
necessarydime
nsio
ns,such as the closed mold size,shape size,feature size,assemblysize,limit the size a
nd tech
nical co
nditio
ns,preparatio
n of parts list etc.. Keywords: ABSwarp,i
njectio
n mold,push plate mecha
nism,thi
nwall plastic parts,mold desig
n 目录 1绪论1 1.1模具工业产品结构的现状1 1.2模具工业技术结构现状1 1.3模具的发展趋势2 1.3.1模具CAD/CAE/CAM正向集成化、三维化、智能化和网络化方向发展2 1.3.2模具检测、加工设备向精密、高效和多功能方向发展2 1.4快速经济制模技术3 1.5模具材料及表面处理技术发展迅速3 2塑料弯板注射模的结构设计与制造4 2.1明确设计任务和准备必要的技术条件4 2.2分析研究原材料的工艺特性和成型性能4 2.2.1基本特性：4 3塑件的工艺性分析6 3.1塑料型号及其性能6 3.2成型特点：7 3.3模具工艺规程的编制7 4模具的结构形式9 4.1分型面位置的确定9 4.2型腔数量和排列方式确定9 5注射机型号的确定12 5.1注射量的计算12 5.2浇注系统凝料体积的初步估算12 5.3选择注射机12 5.4注射机的相关参数的校核13 5.4.1注射压力校核13 6浇注系统的设计14 6.1主流道的设计14 6.2分流道的设计15 6.3浇口的设计15 6.4侧浇口尺寸的确定15 7冷料穴的设计17 7.1成型零件钢材的选用17 8排气孔道的设计18 9分型面的选择设计19 10模架的选择与设计20 10.1特点和用途：20 10.2模架的确定20 10.3各模板尺寸的确定21 10.4模架各尺寸的校核21 11顶出脱模机构设计22 11.1推出脱模机构的选取用原则22 11.2脱模机构工作原理22 11.3推板的设计22 12温调系统设计23 12.1模具加热与冷却系统对塑件质量的影响23 12.2冷却介质23 12.3凹模嵌件和型芯冷却水道的设置23 14绘制模具的总装图25 装配调试的工艺要求及注意问题25 结束语26 致谢28