摘要
我国的塑料成型模具设计，制作技术比较晚，整体水平还比较低。目前国外模具行业广泛采用CAD／CAM技术，并通过数控机床进行加工，大大的缩短了产品开发周期和制造周期，提高了模具的技术含量，降低了成本。相比之下，我国模具行业还有很大差距.目前单型腔、简单型腔的模具达70%以上，仍占主导地位。本设计论文是要求我们根据一个产品零件设计出它的模具结构，由于本设计的产品零件工序相对来说较少，所以设计出的模具结构也相对简单。在本设计中大多数的零部件都是来自国家标准，因为这样可以使模具的互换性提高。对塑件进行工艺分析，仔细阐述了模具的浇注系统，分型面选择，侧抽芯机构，成型零件的设计，冷却系统及模具的工作原理。模具采用一模两腔，两个点浇口注射，顶杆顶出，回程杆复位。用了组合式型芯、型腔，使加工工艺简化、可行。
Ａbstract
In our country,because of the late of manufacture beginning the totalitily standard of mold design is very low about the plastics of taking shape. Now foreign mould industry has greatly shortened the mould of making period, heightened the mould of technical content and reduced the cost by making use of CAD/CAM technical and numerical control tool. To the contrary, mould industry in our country has lagged behind, Nowaday,the proportion of odd casement, simple casement mold is over 70percent which is still dominant. In this thesis of the design, teachers request us to design a mold tool according to the product of the part. Because the work preface of the part is less compared with the others, The construction of the mold is more or less simple , In this design, the majority of the parts are coming from the national standard . If you do this ,the mold which you design will be very easy to be replaced.The designing characteristics of the feeding system, the choice of parting level, the molding part ,the side core-pulling mechanism, the cooling system and the working principle of the injection molding was discussed in detail。There are only two cavity in this mold and two gates in this runner system. The lifter system is used to form the internal undercut. In addition, because I had adopted to comped axle and casement, the process planning is becoming simple and feasible.
目录
第1章 概述…..1
1.1塑料模的功能………………………………………..1
1.2我国塑料模现状…………………….……………….2
1.3塑料模发展趋势…………………….……………….2
第2章 材料的选择与塑件结构分析……………….. 3
2.1材料的选用..4
2.2塑件结构…..6
第3章 注塑模组成……………………………………. 8
第4章 型腔数量及布局……………………………… 9
4.1型腔数量的确定…………………………………… 10
4.2型腔的布局 11
第5章 注射机型号的选择………………………….. 13
第6章 分型面的设计…………………………………15
第7章 浇注系统的设计…………………………….. 17
7.1主流道的设计…………………….……………… 17
7.2分流道的设计…………………….……………… 20
7.3浇口的设计…………………….………………… 23
7.4冷料穴的设计…………………….…………………25
7.5 普通浇注系统端面尺寸的计算和校核……………27
第8章 排气系统的设计…………….…………………29
第9章模架的确定和标准件的选用….…………………30
第10章 脱模导向机构的设计…………………………32
10.1合模导向机构的设计………………………………32
10.2塑件脱模机构的设计………………………………34
第11章 成型零部件设计……………………………. 37
11.1、成型零件的结构设计…………………………… 37
11.2、零件的工作尺寸的计算………………………… 38
11.3、成型零件强度计算……………………………….40
第12章 冷却系统设计…………………………………38
12.1模具温度调节的重要性……………………………43
12.2 冷却的计算………………….…………………… 44
第13章 注塑模具选材…………………………….. 46
第14章 模具的试模与修模………………………… 49
摘要……. … 51
设计总结…….53
参考文献…… 54
