设计简介
泡沫灭火器喷嘴注射模具设计
摘要：本次主要设计是对泡沫灭火器喷嘴注射模的设计, 重点对塑件的成型原理、原料选用和注射技术进行分析。通过根据形状、尺寸、精度及表面质量要求的分析结果，确定所需的模塑成型方案，制品的后加工、分型面的选择、型腔的数目和排列、成型零件的结构、浇注系统等。该塑件有内螺纹，需两次分型。故设计中主要解决了分型面的选择，型腔数目的确定，脱模机构的设计.采用了二次脱模机构来脱模，保证塑件能顺利的成型出模。
关键词：脱模机构；注射模；低密度聚乙烯
The Design of Injection Mold
PA1010tract：The main design graduate of injection mold design. Focus on the analysis of the principle of molding plastic parts, materials selection and injection technique. Adopted under the shape, size, accuracy and surface quality requirements of the analysis results, the program required molding, products after processing, the choice of parting, the number and arrangement of the cavity, forming part of the structure, pouring system . The plastic parts within a thread,need twice disport model.Therefore,the design of the project profile for the plastic parts of sub-surface choices,determining the number of cavity,the demoulded mechanism design.Using twice demoulding agencies,Guarantee a smooth plastic parts from the moldel.
Key words：Plastics injection Mold;Structural design ;
目 录
摘要：本次主要设计是对泡沫灭火器喷嘴注射模的设计, 重点对塑件的成型原理、原料选用和注射技术进行分析。通过根据形状、尺寸、精度及表面质量要求的分析结果，确定所需的模塑成型方案，制品的后加工、分型面的选择、型腔的数目和排列、成型零件的结构、浇注系统等。该塑件有内螺纹，需两次分型。故设计中主要解决了分型面的选择，型腔数目的确定，脱模机构的设计.采用了二次脱模机构来脱模，保证塑件能顺利的成型出模。
关键词：脱模机构；注射模；低密度聚乙烯
The Design of Injection Mold
PA1010tract：The main design graduate of injection mold design. Focus on the analysis of the principle of molding plastic parts, materials selection and injection technique. Adopted under the shape, size, accuracy and surface quality requirements of the analysis results, the program required molding, products after processing, the choice of parting, the number and arrangement of the cavity, forming part of the structure, pouring system . The plastic parts within a thread,need twice disport model.Therefore,the design of the project profile for the plastic parts of sub-surface choices,determining the number of cavity,the demoulded mechanism design.Using twice demoulding agencies,Guarantee a smooth plastic parts from the moldel.
Key words：Plastics injection Mold;Structural design ;
目 录
1 引言…………………………………………………………………………………………1
1.1概述………………………………………………………………………………………1
1.2国内研究现状……………………………………………………………………………1
1.3国外研究现状………………………………………………………………………2
2 塑件的分析…………………………………………………………………………3
2.1塑件成型工艺分析…………………………………………………………………3
2.2 壁厚分析…………………………………………………………………………………3
2.3 圆角分析 ………………………………………………………………………………3
3塑件材料的选择及材料特性……………………………………………………………4
3.1材料的选择………………………………………………………………………………4
3.2 材料简介…………………………………………………………………………………4
3.3基本特性…………………………………………………………………………………4
3.4 物理性质…………………………………………………………………………………4
3.5 成型特性…………………………………………………………………………………5
4塑件的形状尺寸的计算…………………………………………………………………6
5注射机的选择及型号和规格…………………………………………………………6
5.1 估算塑件的体积和质量…………………………………………………………6
5.2 选择注射机………………………………………………………………………6
6 型腔数目的确定及排布……………………………………………………………8
6.1型腔数目……………………………………………………………………………8
6.2型腔的排布…………………………………………………………………………8
7分型面的选择……………………………………………………………………9
8 浇注系统的设计……………………………………………………………………10
8.1导柱的设计…………………………………………………………………………10
8.2导套的设计…………………………………………………………………………10
8.3分流道设计……………………………………………………………………………10
8.4浇口的设计…………………………………………………………………………11
8.5冷料穴的设计……………………………………………………………………………12
8.6排气系统的设计…………………………………………………………………………12
9 塑料工艺尺寸的计算…………………………………………………………………13
9.1 凹模的的结构设计…………………………………………………………………13
9.2 凸模的结构设计…………………………………………………………………13
9.3 凹模径向尺寸计算…………………………………………………………………13
9.4 凸模径向尺寸计算…………………………………………………………………14
10 导向机构的设计…………………………………………………………………………16
10.1导柱导向机构的作用……………………………………………………………16
10.2开模过程设计……………………………………………………………………16
10.3导柱导套的设计………………………………………………………………17
10.4导柱与导套的布置………………………………………………………………18
11 脱模机构的设计…………………………………………………………………………19
11.1脱模机构的组成…………………………………………………………………19
11.2设计原则…………………………………………………………………………19
12温度调节系统的设计…………………………………………………………………20
12.1模具冷却系统的设计……………………………………………………………20
12.2模具冷却时间的确定………………………………………………………………20
12.3冷却系统的设计原则…………………………………………………………………20
12.4冷却系统的结构设计…………………………………………………………………21
12.5冷却系统的计算…………………………………………………………………21
13 模具工作过程……………………………………………………………………………21
14 设计总结…………………………………………………………………………………22
参考文献……………………………………………………………………………………22
致谢…………………………………………………………………………………………23
