机械5

摘要 20世纪塑料材料的制品如雨后春笋一样涌现，当然这样的兴起是因为它本身的特点，包括有价格低廉、易塑型、强度大等等。就现在来说，塑料制品已经在很多的方面得到了应用，诸如日常的生活、医疗所使用的设备、电子电器制品方面、汽车内部设备等。 塑料制品有很多种成型的方法，本设计使用的是最常使用的注塑方式——注射成型，根据洗衣机右缸上顶盖塑料制品的要求，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。本模具采用一模两腔，大水口搭底进料，注射机采用海天HTF1250X1B型号，设置冷却系统。前期对于设计对象进行了相关的测量，数据的记录等；中期主要是使用UG三维设计软件根据前期测量的数据建立立体模型，并在塑件模型的基础上利用UG制造内的模具型腔模块对洗衣机右缸上顶盖作出相应的注塑模具设计，包括有塑件元件、滑块分型面、主分型面、浇口等，并且加入相应的模架、浇口、流道等；后期则是以之前作出的成果为基础使用CAD软件绘制出相应的二维图，更加清晰的显示出塑件的结构以及模具的机构。 关键词：洗衣机右缸上顶盖；一模两腔；注射机；海天HTF1250X1B，冷却系统；注塑模具 Abstract I
n twe
ntieth Ce
ntury, plastic materials spra
ng up like mushrooms, of course, because of its ow
n characteristics, i
ncludi
ng low price, easy moldi
ng, high stre
ngth a
nd so o
n. Now, plastic products have bee
n applied i
n ma
ny aspects, such as daily life, equipme
nt used i
n medical care, electro
nic a
nd electrical products, a
nd automobile i
nter
nal equipme
nt. There are ma
ny ki
nds of moldi
ng methods i
n plastic products. This desig
n uses the most commo
nly used i
njectio
n moldi
ng method- i
njectio
n moldi
ng. Accordi
ng to the requireme
nts of plastic products o
n the top top of thewashi
ng machi
ne,we k
now the use of plastic parts, a
nalyze the tech
nological requireme
nts of the plastic parts, size precisio
n a
nd so o
n, a
nd choose the size of the parts of the plastic parts. This mold adopts the first mock exam two chamber, a bottom gate feedi
ng, i
njectio
n machi
ne adopts the Haitia
n HTF1250X1B model, is providedwith a cooli
ng system. I
n the early stage, the related measureme
nt a
nd data recordi
ngwere carried out for the desig
n object. I
n the middle period, the three-dime
nsio
nal modelwas established by usi
ng UG 3D desig
n software accordi
ng to the data measured earlier, a
nd the mold cavity module i
n the UG ma
nufacturi
ngwas used to make the correspo
ndi
ng i
njectio
n mold desig
n o
n the top cover of thewashi
ng machi
ne right cyli
nder, i
ncludi
ng the desig
n of the i
njectio
n mold. There are plastic parts, slide block surface, mai
n parti
ng surface, gate a
nd so o
n, a
nd joi
n the correspo
ndi
ng mold, gate, ru
n
ner, a
nd so o
n. Later, the correspo
ndi
ng two-dime
nsio
nal map is draw
n usi
ng CAD software o
n the basis of the previous results, a
nd the structure of the plastic parts a
nd the mecha
nism of the mold are clearly displayed. Keywords:washi
ng machi
ne right cyli
nder cover; the first mock exam two cavity; i
njectio
n machi
ne; the HTF1250X1B i
njectio
n mold cooli
ng system; 目录 摘要I Abstract II 第一章绪论1 第二章注塑工艺分析及成型方法2 2.1洗衣机右缸上顶盖塑件分析2 2.1.1塑件材料的选择3 2.1.2所选材料主要特性3 2.1.3技术指标4 2.1.4精度选择4 2.1.5洗衣机右缸上顶盖的工艺参数4 第三章注塑模具结构设计5 3.1拟定模具结构设计5 3.1.1分型面位置的确定5 3.1.2确定型腔数量及排列方式6 3.1.3模具结构形式的确定7 3.1.4注射机型号的确定7 3.1.5注塑机的参数较核9 3.2浇注系统、关键零部件设计11 3.2.1浇注系统形式和浇口的设计11 3.2.2成型零件设计14 3.2.3排气系统的设计16 3.2.4冷却调节系统设计17 3.2.5脱模机构的设计19 第四章总结24 4.1模具设计过程体会24 4.2设计存在问题及解决设想24 参考文献25 致谢27