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1、 摘 要 塑料制品具有原料来源丰富，价格低廉，性能优良等特点。它在电脑、手机、汽车、电机、电器、仪器仪表、家电和通讯产品制造中具有不可替代的作用，应用极其广泛。注射成形是成形热塑件的主要方法，因此应用范围很广。 注射成形是把塑料原料放入料筒中经过加热熔化，使之成为高黏度的流体，用柱塞或螺杆作为加压工具，使熔体通过喷嘴以较高压力注入模具的型腔中，经过冷却、凝固阶段，而后从模具中脱出，成为塑料制品。 本产品是日常应用的家用晾衣架上的活动圈注塑模具设计，实用性强。该产品设计为中批量生产，故设计的模具要有较高的注塑效率，浇注系统要能够自动脱模，此外为保证塑件表面质量采用侧浇口，因此选用单分型面注射模，
2、侧浇口自动脱模结构。模具的型腔选择一模两腔结构，浇注系统采用侧浇口成形，推出形式为推杆推出机构完成塑件的推出。本次的设计查阅了大量的专业资料和书籍，丰富了设计过程。关键词： 注射成型，单分型面，侧浇口，型芯1Abstract Here to enter the need to turn over a source of plastic materials, low price, quality and performance characteristics. It is in computers and mobile phones, cars and electrical and electr
3、onics, instruments, appliance and products manufacturing is an alternative to the role of the most widely used. An injection is a thermoplastic - concrete shape of the main method, the scope of application is very large. Been shaping the plastic materials in rolls of the material being heated, which
4、 has become a highly fluid bolts, or as the pressure of tools, the melted by regulated by a high pressure injection mould of form, after a cooling and solidify, and then die from the adjustment, as of plastic. The product is of daily use of plastic bottle, and with high practicability. The product d
5、esign for mass production, the design molds to have high molding efficiency, the system can automatically release, in addition to ensure the quality of the surface forms a side gate and therefore use single cent for the injection, the side gate automatically release the structure of the type.The mac
6、hine mold is a choice of a module four chambers structure, the system uses the side gate to push out of shape, form a board with the agency to complete the forms of the launch of the process. Key words:Side gate;Injection;Core.目录摘 要IAbstractII第1章 绪论11.1 中国模具行业概况11.2 中国模具行业发展前景及发展趋势21.3 设计在学习模具制造中的作用
7、31.4 设计的主要任务3第2章 方案选择42.1 塑件成型工艺分析42.1.1 塑件分析42.1.2 塑件的原材料分析52.1.3 计算塑件的体积和质量62.2 分型面的选择62.3 型腔数量及排列方式的确定72.3.1 型腔数量的确定72.3.2 型腔的布局82.3.3 注射机的初步选择9第3章 部件的设计与计算113.1 浇注系统的设计113.1.1 普通流道浇注系统的组成及设计原则113.1.2 主流道的设计123.1.3 分流道的设计133.1.4 浇口设计133.1.5 冷料穴与拉料杆143.2 成型零部件的设计与计算15 3.2.1 成型零部件结构设计163.2.2 成型零部件尺
8、寸计算183.2.3 成型零部件强度计算213.2.4 抽芯机构的设计223.3 脱模机构的设计233.3.1 脱模机构的设计原则及脱模力计算233.3.2 脱模机构的确定243.3.3 脱模机构的导向装置和复位25第4章 校核274.1 注射机的相关参数校核274.1.1 最大注射量的校核274.1.2 锁模力的校核274.1.3 注射压力的校核284.1.4 模具高度与注射机闭合高度关系的校核284.1.5 开模行程的校核294.2 推杆强度校核29结论31致谢32参考文献33CONTENTSAbstractIAbstractIIChapter1 Introduction1 1.1 A p
9、rofile of China mold and die industry11.2 The development propest of China mold industry21.3 The role of design in mould manufacturing study31.4 The main task of the design3Chapter2 Scheme selection42.1 Plastic parts molding process analysis42.1.1 Plastic parts analysis42.1.2 Plastic raw material an
10、alysis52.1.3 The size and the weight of plastic parts62.2 The parting surface62.3 The determination of cavity quantity and arrangment72.3.1 The number of cavity72.3.2 The layout of the cavity82.3.3 Preliminary selection of injection machine9Chapter3 The calculation in the design of parts113.1 The de
11、sign of gating system113.1.1 The common runner gating system composition and design principe113.1.2 The design of the mainstream way123.1.3 The design of the shunt way133.1.4 The gate design133.1.5 Slag hole and pull rod143.2 Forming parts design and calculation15 3.2.1 The design of molding parts a
12、nd molding parts structure design163.2.2 Molding parts size calculation183.2.3 Molding parts strength calculation213.2.4 The design of the core-pulling mechanism223.3 The design of the demoulding mechanism233.3.1 Demoulding mechanism of the design principles and ejection force calculation233.3.2 The
13、 determination of demoulding mechanism243.3.3 Demoulding mechanism of the orientde device and reset25Chapter4 Check264.1 The related parameters in injection machine checking274.1.1 The largest injection quantity check274.1.2 The clamping force of the check274.1.3 Injection pressure check284.1.4 Heig
14、ht of mould and injection machine of the relaionship between height and checking284.1.5 Drive travel check294.2 The push rod intensity29Knot theory31Thanks32Reference33第1章 绪论1.1 中国模具行业概况 中国的现代模具工业自20世纪70年代末期起，在中国政府支持下，经过30多年的发展，已经建立起了较为完整的模具工业体系，包括国家、行业和企业建立的模具技术研发机构，模具材料生产和供应体系，2万余家模具制造企业（其中规模较大的模具企业近5 000家）和60余个全国（中国模具工业协会）和地区级的模具行业协会。同时，我国模具产业的鲜明特点是形成了明显的集聚式模具生产布局，在全国33个省、自治区、直辖市中，广东省、浙江省、江苏省和上海市（即珠三角、长三角地区）的模具生产能力占到全国（不含台湾地区）总量的80%以上1。 通过引进国际工业发达国家与地区（主要是欧洲、美国、日本等）的设计制造技术和自主创新，我国模具技术水平也有了长足进步，CAD/CAM技术已普及， CAE、CAPP、PLM、ERP等数字化技术已有一部分企业开
