设计简介
摘 要
本文是关于前盖注塑模具的塑料成型模具设计，针对的主要是模具成型中的侧向抽芯问题。在正确分析塑件工艺特点和ABS的性能的基础上，介绍了对凸模，凹模，浇注系统，脱模机构，顶也机构的设计，选择标准零件，设计非标件的设计过程。由于模具生产的塑料制品具有高精度、高复杂程度、高一致性、高生产率和低消耗等特点，涉及模具结构、强度、寿命计算及熔融塑料在模具中流动预测等复杂的工程运算问题；（CAD）、PROE等不同的软件可分别用于模具的设计、制造和产品质量进行分析。塑料注射成型所用的模具称为注射模成型模具，该模具特点是模具先由注射机合模机构闭和紧密，然后由注射机注射装置将高温高压的塑料熔体注入模腔内，经冷却或固化成型后，在侧向分型的作用下开模取出塑件。前盖注射模设计，采用一般精度，利用CAD、PROE来设计或分析注射模的成型零部件，浇注系统，导向部件，脱模机构和分型抽芯机构等等。综合运用了专业基础、专业课知识设计，其核心知识是塑料成型模具、材料成型技术基础、机械设计、塑料成型工艺、模具CAD,PROE等。
关键词： 熔融塑料 , 冷却,浇注系统, 侧向抽芯, 顶出机构
ABSTRACT
this project is casts the mold about the front cover of the plastics to model the molding tool design, in view of mainly is in the mold formation lateralpulls out the core question.Models the craft characteristic and in the ABS performance foundation in the correct analysis, introduced to the raised mold, the concave mold, the casting system, the drawing of patterns organization, goes against also the organization design, the choice standard components, designs the non-tender design process, ecause the mold produces the plastic product has characteristics and so on high accuracy, high complex degree, high uniformity, high productivity and low consumption, involves the mold structure, the intensity, the life computation and the fusing plastic flows the forecast in the mold and so on the complex project operation question; (CAD), PROE and so on the different software may use in the mold separately the design, the manufacture and the product quality carries on the analysis. The plastic injection formation uses the mold is called the injection mold formation mold, this mold characteristic is the mold first gathers the mold organization by the injection machine to shut with closely, then pours into by the injection machine injection installment the high temperature high pressure plastic melt in the cavity, after cooling or the solidification formation, operates the mold under the lateral minute function to take out models.The front cover injection mold designs, uses the general precision, CAD, PROE designs or the analysis injects the mold the formation spare part, the casting system, guides the part, the drawing of patterns organization and the minute pulls out core organization and so on. The synthesis has utilized the specialized foundation, the professional course knowledge design, its core knowledge is the plastic formation mold, the material formation technology base, the machine design, the plastic formation craft, mold CAD, PROE and so on.
Key word: The fusing plastic.cooling. the casting system . lateral pulls out the core. goes against the organization.
目 录
任务书………………………………………………………………………………………Ⅰ
中文摘要……………………………………………………………………………………Ⅱ
英文摘要……………………………………………………………………………………Ⅲ
第一章 概述…………………………………………………………………………………1
1.1国际、国内塑料模具成型发展概况………………………………………………1
1.2塑料模具设计方法主要发展方向……………………………………………… 2
1.3毕业设计课题资料查询……………………………………………………………3
1.3.1 塑件分析……………………………………………………………………….3
1.3.2 了解塑件的加工性能和工艺性能…………………………………………………4
1.3.3 塑料的适用范围…………………………………………………………………6
1.3.4模具材料……………………………………………………………………………6
1.4毕业设计思想简述…………………………………………………………………7
第二章 塑料制件的工艺性分析及工艺结构设计…………………………………………8
2.1成型塑料制件结构工艺性分析……………………………………………………8
2.2塑件三维CAD建模及CAE分析……………………………………………………8
2.2.1 利用CAE完成制件三维造型…………………………………………………………8
2.2.2 CAE分析及其结果…………………………………………………………………9
2.2.3根据CAE分析结论进行模具工艺设计………………………………………………14
2.3根据CAE分析结论进行模具工艺设计……………………………………………14
2.3.2型腔布置…………………………………………………………………………15
2.3.3确定分型面………………………………………………………………………15
2.3.4确定浇注系统和排气系统…………………………………………………………16
第三章选择注射机及注射机工艺参数校核………………………………………………20
3.1注塑机的技术规范…………………………………………………………………20
3.2最大注射量的校核…………………………………………………………………20
3.3注塑压力的核核……………………………………………………………………21
3.4锁模力的校核………………………………………………………………………21
3.5 模具闭合高度校核 ………………………………………………………………22
3.6 开模行程校核……………………………………………………………………22
第四章. 模具设计…………………………………………………………………………23
4.1确定标准注塑模架..…………………………………………………………….23
4.2模具成型零件系统设计………… …………………………………………………23
4.2.1成型零件结构设计………………………………………………………………23
4.2.2成型零件材料设计………………………………………………………………24
4.2.3成型零件壁厚设计………………………………………………………………25
4.2.4排气方式及排气槽的设计………………………………………………………25
4.3型腔成型尺寸计算…………………………………………………………………25
4.3.1塑件精度影响误差值的确定……………………………………………………25
4.3 .2按平均收缩率计算成型尺寸……………………………………………………25
4.4脱模机构设计………………………………………………………………………30
4.4.1.简单脱模(顶杆,推板组合式顶出)设计…………………………………………30
4.4.2.侧向分型，抽芯机构设计………………………………………………………32
4.5模具主要连接、定位、导向件设计………………………………………………37
4.5.1模具主要连接件选择或设计………………………………………………………37
4.5.2模具主要定位件选择或设计………………………………………………………37
4.5.3模具主要导向件选择或设计………………………………………………………37
4.6模具冷却系统设计…………………………………………………………………43
4.6.1注射模冷却系统设计的原则………………………………………………………43
4.6.2模具热平衡计算…………………………………………………………………44
第五章 绘制模具图…………………………………………………………………………48
5.1绘制总装结构图……………………… ……………………………………………48
5.2绘制重要零件图…………………………………………………………… ………48
5.3校对、审图。……………………………………………………………… ………50
5.4模具设计的标准化问题…………………………………………………… ………50
第六章 结论……………………………………………………………………… 51
参考文献……………………………………………………………………………53
致谢…………………………………………………………………………………54
本文是关于前盖注塑模具的塑料成型模具设计，针对的主要是模具成型中的侧向抽芯问题。在正确分析塑件工艺特点和ABS的性能的基础上，介绍了对凸模，凹模，浇注系统，脱模机构，顶也机构的设计，选择标准零件，设计非标件的设计过程。由于模具生产的塑料制品具有高精度、高复杂程度、高一致性、高生产率和低消耗等特点，涉及模具结构、强度、寿命计算及熔融塑料在模具中流动预测等复杂的工程运算问题；（CAD）、PROE等不同的软件可分别用于模具的设计、制造和产品质量进行分析。塑料注射成型所用的模具称为注射模成型模具，该模具特点是模具先由注射机合模机构闭和紧密，然后由注射机注射装置将高温高压的塑料熔体注入模腔内，经冷却或固化成型后，在侧向分型的作用下开模取出塑件。前盖注射模设计，采用一般精度，利用CAD、PROE来设计或分析注射模的成型零部件，浇注系统，导向部件，脱模机构和分型抽芯机构等等。综合运用了专业基础、专业课知识设计，其核心知识是塑料成型模具、材料成型技术基础、机械设计、塑料成型工艺、模具CAD,PROE等。
关键词： 熔融塑料 , 冷却,浇注系统, 侧向抽芯, 顶出机构
ABSTRACT
this project is casts the mold about the front cover of the plastics to model the molding tool design, in view of mainly is in the mold formation lateralpulls out the core question.Models the craft characteristic and in the ABS performance foundation in the correct analysis, introduced to the raised mold, the concave mold, the casting system, the drawing of patterns organization, goes against also the organization design, the choice standard components, designs the non-tender design process, ecause the mold produces the plastic product has characteristics and so on high accuracy, high complex degree, high uniformity, high productivity and low consumption, involves the mold structure, the intensity, the life computation and the fusing plastic flows the forecast in the mold and so on the complex project operation question; (CAD), PROE and so on the different software may use in the mold separately the design, the manufacture and the product quality carries on the analysis. The plastic injection formation uses the mold is called the injection mold formation mold, this mold characteristic is the mold first gathers the mold organization by the injection machine to shut with closely, then pours into by the injection machine injection installment the high temperature high pressure plastic melt in the cavity, after cooling or the solidification formation, operates the mold under the lateral minute function to take out models.The front cover injection mold designs, uses the general precision, CAD, PROE designs or the analysis injects the mold the formation spare part, the casting system, guides the part, the drawing of patterns organization and the minute pulls out core organization and so on. The synthesis has utilized the specialized foundation, the professional course knowledge design, its core knowledge is the plastic formation mold, the material formation technology base, the machine design, the plastic formation craft, mold CAD, PROE and so on.
Key word: The fusing plastic.cooling. the casting system . lateral pulls out the core. goes against the organization.
目 录
任务书………………………………………………………………………………………Ⅰ
中文摘要……………………………………………………………………………………Ⅱ
英文摘要……………………………………………………………………………………Ⅲ
第一章 概述…………………………………………………………………………………1
1.1国际、国内塑料模具成型发展概况………………………………………………1
1.2塑料模具设计方法主要发展方向……………………………………………… 2
1.3毕业设计课题资料查询……………………………………………………………3
1.3.1 塑件分析……………………………………………………………………….3
1.3.2 了解塑件的加工性能和工艺性能…………………………………………………4
1.3.3 塑料的适用范围…………………………………………………………………6
1.3.4模具材料……………………………………………………………………………6
1.4毕业设计思想简述…………………………………………………………………7
第二章 塑料制件的工艺性分析及工艺结构设计…………………………………………8
2.1成型塑料制件结构工艺性分析……………………………………………………8
2.2塑件三维CAD建模及CAE分析……………………………………………………8
2.2.1 利用CAE完成制件三维造型…………………………………………………………8
2.2.2 CAE分析及其结果…………………………………………………………………9
2.2.3根据CAE分析结论进行模具工艺设计………………………………………………14
2.3根据CAE分析结论进行模具工艺设计……………………………………………14
2.3.2型腔布置…………………………………………………………………………15
2.3.3确定分型面………………………………………………………………………15
2.3.4确定浇注系统和排气系统…………………………………………………………16
第三章选择注射机及注射机工艺参数校核………………………………………………20
3.1注塑机的技术规范…………………………………………………………………20
3.2最大注射量的校核…………………………………………………………………20
3.3注塑压力的核核……………………………………………………………………21
3.4锁模力的校核………………………………………………………………………21
3.5 模具闭合高度校核 ………………………………………………………………22
3.6 开模行程校核……………………………………………………………………22
第四章. 模具设计…………………………………………………………………………23
4.1确定标准注塑模架..…………………………………………………………….23
4.2模具成型零件系统设计………… …………………………………………………23
4.2.1成型零件结构设计………………………………………………………………23
4.2.2成型零件材料设计………………………………………………………………24
4.2.3成型零件壁厚设计………………………………………………………………25
4.2.4排气方式及排气槽的设计………………………………………………………25
4.3型腔成型尺寸计算…………………………………………………………………25
4.3.1塑件精度影响误差值的确定……………………………………………………25
4.3 .2按平均收缩率计算成型尺寸……………………………………………………25
4.4脱模机构设计………………………………………………………………………30
4.4.1.简单脱模(顶杆,推板组合式顶出)设计…………………………………………30
4.4.2.侧向分型，抽芯机构设计………………………………………………………32
4.5模具主要连接、定位、导向件设计………………………………………………37
4.5.1模具主要连接件选择或设计………………………………………………………37
4.5.2模具主要定位件选择或设计………………………………………………………37
4.5.3模具主要导向件选择或设计………………………………………………………37
4.6模具冷却系统设计…………………………………………………………………43
4.6.1注射模冷却系统设计的原则………………………………………………………43
4.6.2模具热平衡计算…………………………………………………………………44
第五章 绘制模具图…………………………………………………………………………48
5.1绘制总装结构图……………………… ……………………………………………48
5.2绘制重要零件图…………………………………………………………… ………48
5.3校对、审图。……………………………………………………………… ………50
5.4模具设计的标准化问题…………………………………………………… ………50
第六章 结论……………………………………………………………………… 51
参考文献……………………………………………………………………………53
致谢…………………………………………………………………………………54
