保险座塑料注塑模具设计(含全套CAD图纸).doc

西安工业大学北方信息工程学院
本科毕业设计(论文)
题目:保险座塑料注塑模具设计
系别:机电信息系
专业:机械设计制造及其自动化
班级:
学生:
学号:
指导教师:
2013年05月
摘要
模具是工业生产中使用极为广泛的主要工艺装备,它是当代工业生产的重要手段和工艺发展方向,许多现代工业的发展和技术水平的提高,在很大程度上取决于模具工业的发展水平。本论文主要介绍了保险座的塑料注塑模具的设计。
设计中首先通过分析塑件的形状及工艺特性,选择了合适的模具设计方案;其次是对注塑机的选择,包括注射机的初选和注射机有关参数的校核,并确定了注射机;再次完成模具的结构设计,包括分型面的选择和确定、型腔数目的确定及型腔的排列、浇注系统的设计、成型零件结构设计、抽芯机构设计、推出机构的选择、冷却系统的设计、标准模架的选择。最后对成型零件尺寸进行计算,确定工艺参数。
采用此模具能够保证塑件尺寸外形以及表面要求,而且成本低、结构简单、开模容易、效率高,具有较强的实用性。
关键词:塑料注塑模具;注塑机;结构设计
The design of plastic injection mould for the Safety box
Abstract
Mold is widely used in industrial production the main technological equipment, It is an important means of modern industrial production and process development direction ,Many modern industrial development and the improvement of the technical levels ,Largely depends on the development of die and mould industry level. This paper mainly introduced the plastic injection mold insurance seat of design.
First through analysis in the design of plastic parts, process characteristics and shape ,choose the proper mould design ,Second is the choice of injection, mcluding injection machine of primaries and injection machine related parameter respectively ,To determine the injection plete the die structure design again ,Enclose the choice and determination parting ,Cavity number of determining and cavity arrangement ,The design of gating system ,Molding parts structure design ,Core-pulling mechanism design, selection of launch institutions, cooling system design, standard formwork choice ,Finally calculated for molding parts size, determine the process parameters.
Using this mold can guarantee plastics dimension appearance and surface requirements , And low cost, simple structure and easy to open mold, high efficiency, with strong practicability.
KeyWords: Plastic injection mold; injection machine; Structure design
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主要符号表
K
安全系数
E
材料弹性模量
Smax
塑料的最大收缩率
P1
脱模阻力
Smin
塑料的最小收缩率
C
型芯成型部分断面的平均
P0
单位面积的包紧力
h
型芯