设计简介
塑料外壳注射成型工艺及模具设计
摘 要
塑料是一种可塑性的合成高分子材料，具有重量轻且坚固，耐化学腐蚀，电绝缘性好，价格便宜，可塑性好等特点，广泛应用于电脑、手机、汽车、电机、电器、家电和通讯产品制造中。
注塑成形是成形塑件的主要方法之一，是指使用注塑机将热塑性塑料熔体在高压下注入到模具内经冷却固化获得产品的方法。注塑的优点是生产速度快，效率高，操作可自动化，能成型形状复杂的零件，特别适合大量生产。
本次设计的产品为按键，具有重量轻，强度高，耐腐蚀，易清洁等特点，为大批量生产产品。本次设计在针对产品进行工艺性分析后，确定模具分型面、型腔数目、浇口形式、位置大小其中最重要的是确定型芯和型腔的结构，方式。此外还进行了脱模机构的设计，合模导向机构的设以及它们的定位和紧固设计，冷却系统的设计等。最后绘制完整的模具装配总图和主要的模具零件图及编制成型零部件的制造加工工艺过程卡片。实践证明:该模具结构合理、可靠,并能保证产品质量,对此类注塑产品的模具设计有参考价值。
关键词:塑料 注塑成形 模具设计
Injection molding process and mold design of plastic button
Abstract
Plastic is a synthetic polymer material , with the characteristics of plasticity, light weight, sturdiness, electrical insulation, and which is resistance to chemical corrosion and cheap. It is widely used in computers, mobile phones, cars, motors, electrical, home appliances and communication products manufacturing.
Injection molding is one of the main methods of forming plastic parts, it refers to the use of plastic injection machine to inject the thermoplastic melts into the mold under high pressure , after cooled to obtain the products . It has the advantage of fast production speed , high production efficiency , and automated operations , it can form the shape of complex parts, particularly suitable for mass production.
The production of graduation project is power button , which has a light weight , high strength , corrosion resistance and easy cleaning features for mass production . After analysis the process of the product , the mold parting line , cavity number , gate form , gate location can be determined , one of the most important is to identify core and cavity structures , as well as their positioning and fastening methods. In addition,it also carries out the design of stripping agencies , mold-oriented organizations and the cooling system .At last, draw a complete mold assembly drawing , major parts diagram , and draw up cards of parts manufacturing and processing process . It is proved that the mold structure is reasonable , reliable and can guarantee product quality , and is valuable for the injection mold design of such products .
key words: Plastic Injection molding Mold design
目 录
1绪 论 1
1.1模具工业产品结构的现状 1
1.2模具工业技术结构现状 1
1.3模具的发展趋势 1
2.塑件的工艺分析 4
2.1 模具工艺规程的编制 4
2．1．1塑件的原材料分析聚丙烯 (简写为PP) 4
2.1.2 分析制品的工艺性和注射成型工艺规程对模具设计的要求 5
2.1.3 分析研究制品的生产纲领 5
2.2 根据塑件形状尺寸，估算塑件体积和重量 6
2.3 模腔的选择与设计 7
3 模具结构设计 8
3.1 主流道设计 8
3.2 分流道设计 9
3.3 冷料井及拉料杆设计 9
3.4 浇口设计 10
3.5分型面的选择设计 11
3.6 排气结构的设计 12
3.7合模导向机构的设计 12
3.8顶出脱模机构设计 13
3.9推板推出脱模机构 13
3.9.1 推板和型芯的配合位置 13
3.10侧抽芯机构的设计 14
3.11凹模的结构设计 15
3.12凸模的结构设计 17
3.13成型零部件工作尺寸计算 18
3.15模具的工作原理和动作过程 18
4注射机有关参数的校核 19
5塑料模具的安装 20
5.1模具的装配及调试 21
结束语 21
致 谢 22
参考文献 23
摘 要
塑料是一种可塑性的合成高分子材料，具有重量轻且坚固，耐化学腐蚀，电绝缘性好，价格便宜，可塑性好等特点，广泛应用于电脑、手机、汽车、电机、电器、家电和通讯产品制造中。
注塑成形是成形塑件的主要方法之一，是指使用注塑机将热塑性塑料熔体在高压下注入到模具内经冷却固化获得产品的方法。注塑的优点是生产速度快，效率高，操作可自动化，能成型形状复杂的零件，特别适合大量生产。
本次设计的产品为按键，具有重量轻，强度高，耐腐蚀，易清洁等特点，为大批量生产产品。本次设计在针对产品进行工艺性分析后，确定模具分型面、型腔数目、浇口形式、位置大小其中最重要的是确定型芯和型腔的结构，方式。此外还进行了脱模机构的设计，合模导向机构的设以及它们的定位和紧固设计，冷却系统的设计等。最后绘制完整的模具装配总图和主要的模具零件图及编制成型零部件的制造加工工艺过程卡片。实践证明:该模具结构合理、可靠,并能保证产品质量,对此类注塑产品的模具设计有参考价值。
关键词:塑料 注塑成形 模具设计
Injection molding process and mold design of plastic button
Abstract
Plastic is a synthetic polymer material , with the characteristics of plasticity, light weight, sturdiness, electrical insulation, and which is resistance to chemical corrosion and cheap. It is widely used in computers, mobile phones, cars, motors, electrical, home appliances and communication products manufacturing.
Injection molding is one of the main methods of forming plastic parts, it refers to the use of plastic injection machine to inject the thermoplastic melts into the mold under high pressure , after cooled to obtain the products . It has the advantage of fast production speed , high production efficiency , and automated operations , it can form the shape of complex parts, particularly suitable for mass production.
The production of graduation project is power button , which has a light weight , high strength , corrosion resistance and easy cleaning features for mass production . After analysis the process of the product , the mold parting line , cavity number , gate form , gate location can be determined , one of the most important is to identify core and cavity structures , as well as their positioning and fastening methods. In addition,it also carries out the design of stripping agencies , mold-oriented organizations and the cooling system .At last, draw a complete mold assembly drawing , major parts diagram , and draw up cards of parts manufacturing and processing process . It is proved that the mold structure is reasonable , reliable and can guarantee product quality , and is valuable for the injection mold design of such products .
key words: Plastic Injection molding Mold design
目 录
1绪 论 1
1.1模具工业产品结构的现状 1
1.2模具工业技术结构现状 1
1.3模具的发展趋势 1
2.塑件的工艺分析 4
2.1 模具工艺规程的编制 4
2．1．1塑件的原材料分析聚丙烯 (简写为PP) 4
2.1.2 分析制品的工艺性和注射成型工艺规程对模具设计的要求 5
2.1.3 分析研究制品的生产纲领 5
2.2 根据塑件形状尺寸，估算塑件体积和重量 6
2.3 模腔的选择与设计 7
3 模具结构设计 8
3.1 主流道设计 8
3.2 分流道设计 9
3.3 冷料井及拉料杆设计 9
3.4 浇口设计 10
3.5分型面的选择设计 11
3.6 排气结构的设计 12
3.7合模导向机构的设计 12
3.8顶出脱模机构设计 13
3.9推板推出脱模机构 13
3.9.1 推板和型芯的配合位置 13
3.10侧抽芯机构的设计 14
3.11凹模的结构设计 15
3.12凸模的结构设计 17
3.13成型零部件工作尺寸计算 18
3.15模具的工作原理和动作过程 18
4注射机有关参数的校核 19
5塑料模具的安装 20
5.1模具的装配及调试 21
结束语 21
致 谢 22
参考文献 23
