机械5

苹果7手机保护壳的注塑成形工艺及模具设计 摘要 手机保护壳注塑模具设计，介绍了注塑成型的基本原理，详细介绍了塑料件模具的零部件的加工工艺过和模具的装配运用方法。会遇到注射机各种参数的计算、零部件的加工工艺、注射模的结构及相关的计算问题。详细揣述注塑模具浇注系统、温度控制、定出装置设计过程。在该模具设计的过程中，充分利用绘图软件绘制了零件图和装配图，设计计算了模具的一系列参数。 ?塑料的种类繁多，成形方法也多，有注射成形、压缩成形、压注成形、挤出成形、气动与液压成形、泡沫塑料的成形等。其中，注射成型中使用的模具被称为注射成型模具，简称注射模具，使用最广泛。注塑模具用于形成热塑性塑料，PC材料制成的塑料手机壳通过注塑成型。注塑模面积与其他塑料模的区别在于，模具被注塑机合模机构合模严密，然后注塑机的注塑装置将高温高压的塑料熔体注入模腔，经冷却或固化定型后开模取出塑件。因此，注射模可形成尺寸精确以及结构复杂的塑料制件，在手机保护壳追求要求及美观的情况下，应用注射成形可以很好 塑料的特点：重量轻便，抗逆性强，抗化学性能好，绝缘性好，价格廉价，可塑性强，广泛应用于各行各业。注塑成型是一种塑料加工技术，塑料颗粒在一定温度下熔化，然后通过喷嘴注入各种模具，成为人们日常使用的各种塑料制品，如塑料玩具、塑料水果碗、塑料配件等，产品通常采用橡胶注塑和塑料注塑。注射成型的优点是生产速度快，运转速度快，基本全自动，可以制作结构复杂的产品，适用于大批量生产产品。设计产品为手机保护壳，需满足重量轻便，高强度，易清洁，美观，且为大规模生产的产品。分析和设计产品，确定模具分型面、型腔数量、浇口类型、位置和尺寸，设计中最重要的一步是确定型芯和型腔的结构以及定位和固定方法。此外，还设计了模具导向机构和冷却系统释放机构。最后画出制造加工过程完成模具组件的总装配图和模具的主要部以及模制零件的制剂。理论结合实际：模具结构合理，能保证产品的品量，最终达到塑料注塑模具设计的目的和要求。 关键词注塑成形；模具设计；塑料 Abstract The desig
n of i
njectio
n mold for the protective shell of the mobile pho
ne is desig
ned. The basic pri
nciple of i
njectio
n moldi
ng is i
ntroduced. The processi
ng tech
nology of the parts of the plastic parts die a
nd the method of assembli
ng a
nd applyi
ng the mould are i
ntroduced i
n detail. The calculatio
n of various parameters of i
njectio
n machi
ne, the processi
ng tech
nology of parts, the structure of i
njectio
n mold a
nd the related calculatio
n problems will be e
ncou
ntered. The desig
n process of i
njectio
n mold gati
ng system, temperature co
ntrol a
nd setti
ng out device is described i
n detail. I
n the process of desig
ni
ng the mould, the parts a
nd assembly drawi
ngs were plotted by drawi
ng software, a
nd a series of parameters of the mold were desig
ned a
nd calculated. There are ma
ny ki
nds of plastics, a
nd there are ma
ny formi
ng methods, such as i
njectio
n moldi
ng, compressio
n formi
ng, pressi
ng i
njectio
n formi
ng, extrusio
n formi
ng, p
neumatic a
nd hydraulic formi
ng, formi
ng of foam plastic a
nd so o
n. Amo
ng them, i
njectio
n mold used i
n the mold is k
now
n as i
njectio
n mold, referred to as i
njectio
n mold, the most widely used. The i
njectio
n mold is used to form thermoplastic plastic, a
nd the plastic cell pho
ne shell made of PC material is molded by i
njectio
n., the
n the plastic i
njectio
n device of the i
njectio
n moldi
ng machi
ne i
njectio
ns the high temperature a
nd high pressure plastic melt i
nto the mold cavity, a
nd the plastic parts are removed after cooli
ng or solidifyi
ng the mold. Therefore, the i
njectio
n mold ca
n form the plastic parts with precise size a
nd complex structure. The applicatio
n of i
njectio
n moldi
ng ca
n be very good i
n the case of the request a
nd beauty of the mobile pho
ne protectio
n shell. Plastic features light weight, stro
ng resista
nce, good chemical resista
nce, good i
nsulatio
n, low price, stro
ng plasticity, a
nd widely used i
n all walks of life. I
njectio
n moldi
ng is a ki
nd of plastic processi
ng tech
nology, plastic particles melt at a certai
n temperature, a
nd the
n i
njecti
ng various moulds through the
nozzle to become a variety of plastic products used i
n people's daily use, such as plastic toys, plastic fruit bowl, plastic accessories a
nd so o
n. The products usually use rubber i
njectio
n a
nd plastic i
njectio
n moldi
ng. The adva
ntages of i
njectio
n moldi
ng are fast productio
n, fast ru
n
ni
ng, basically automatic, a
nd ca
n produce complex products, suitable for mass productio
n of products. The graduate desig
n product is a mobile pho
ne protective shell. It
needs to meet the lightweight, high-stre
ngth, easy to clea
n, beautiful a
nd mass produced product. A
nalysis a
nd desig
n of the product, determi
ne the mold surface, the
number of cavity, gate type, locatio
n a
nd size. The most importa
nt step i
n the desig
n is to determi
ne the structure of the core a
nd the cavity a
nd the positio
ni
ng a
nd fixi
ng methods. Besides, a die guidi
ng mecha
nism a
nd a cooli
ng system release mecha
nism are also desig
ned. Fi
nally, draw up the ma
nufacturi
ng process, complete the assembly drawi
ng of the die assembly a
nd the mai
n parts of the mold a
nd the preparatio
ns of the moulded parts. Theory a
nd practice the mold structure is reaso
nable, which ca
n e
nsure the product quality a
nd ultimately achieve the purpose a
nd requireme
nts of plastic i
njectio
n mold desig
n Key words i
njectio
n moldi
ng; mold desig
n; plastic 目录 第一章绪论1 1.1模具在加工工业中的地位1 1.2模具的发展趋势2 1.3设计在学习模具制造中的作用2 第二章塑料的工艺分析4 2.1塑件元件图及技术要求4 2.2原料（ABS）的成型特性和工艺参数5 第三章注塑设备的选择7 3.1注射成型工艺条件7 3.2选择注射机7 3.3模架的选定8 3.4注射机的校核8 第四章型腔布局与分型面设计10 4.1型腔的布局10 4.2分型面的设计10 第五章浇注系统的设计12 5.1主流道的设计12 5.2主流道衬套的设计13 5.3分流道的设计13 5.4浇口的选择14 第六章成型零件的设计16 6.1成型零件的结构设计16 6.2成型零件工作尺寸计算17 第七章合模导向机构的设计19 7.1导柱结构19 7.2导套结构19 7.3侧抽芯机构的设计20 第八章脱模机构的设计22 8.1脱模机构设计的总原则22 8.2推杆设计22 第九章温度调节系统的设计23 9.1模具冷却系统的设计23 9.2模具加热系统的设计24 第十章模具的装配25 10.1模具的装配顺序25 10.2开模过程分析26 参考文献27 致谢28