照相机外壳注塑模具设计.doc

照相机外壳注塑模具设计
摘要
塑料注射模具是工业生产的基础工艺设备,在电子、汽车、电机、电器、仪表、家电和通讯等产品中,60%~80%的零部件,都要依靠模具成形。它不仅直接影响工业产品的水平,也是一个国家工业化程度和机械制造工业技术水平的综合体现。
照相机外壳是一类体积适中,形状、结构较为简单的塑料零件。根据照相机外壳的结构确定模具的结构方案,利用塑件的三维零件图,确定模具的主要结构方式,进而画出其模具的CAD装配图和零件图。
通过对塑件的结构分析,本次设计采用一模四腔设计,滑块侧抽芯机构,实现照相机外壳侧孔的生成;采用侧浇口形式;塑件的体积适中,采用推杆推出实现脱料。采用此模具结构不仅可以保证塑件的表面要求和尺寸精度,而且生产率高、成本低、结构简单,可行性强,是一副实用性很强的模具。
关键词:注塑模具;照相机外壳;塑件;斜滑块
全套图纸,加527953900
The camera shell injection mold design
Abstract
Plastic injection mould is the basis of process equipment in industrial production, in the electronic, automobile, motor, electrical appliance, instrument, home appliances munication products, 60%-80% of the parts, must rely on forming die. It not only directly affect the level of industrial products, is prehensive reflection of a country industrialization and machinery manufacturing industry technical level.
Camera housing is a kind of medium in size, shape, simple structure of plastic parts. According to the camera shell structure determine the structure scheme of the mould, plastic parts of the 3D part drawings, the main structure of dies, and then draw the production of plastic parts CAD parts and assembly plans.
Through the structural analysis of plastic parts, the design adopts the design of a mold four cavity, slanted slide block core-pulling mechanism, realization of generating camera housing side hole; the side gate; moderate volume of plastic parts, the push rod is introduced to achieve stripping. The die structure can not only ensure the surface requirements of plastic parts and precision, and high productivity, low cost, simple structure, strong feasibility, is a very practical mould.
Key words: injection mold; camera housing; plastic parts; Oblique slippery

主要符号表
G——注塑机的实际最大注射量,或g;
T——注塑机的额定锁模力,t;
q——熔融塑料在模腔内的压力,;
S——注射机开模行程,mm;
——塑料的平均收缩率;
——制品的设计公差;
——模具制造公差;
——型芯或成型孔中心距;
——制品孔或凸台中心距;
——动模板受的总压力,MPa;
F——塑件浇注系统在动模上的投影面积,;
P——型腔压力,一般取25~45MPa,取32MPa;
E——塑料的弹性模量,;
——塑料的成型收缩率,查表取;
——型芯的脱模斜度,为1°
——塑