罩壳注塑模具设计
摘要
模具作为国民经济的基础工业,应用范围十分广泛。且发展至今,模具种类及功能逐渐多样化,遍及各行各业,对经济发展非常重要。总体来说模具分为三大类:五金模具、塑料模具以及其他特殊模具。其中,塑料制品在汽车、电子、家电、建材和通讯器材中被大量运用。因此,塑料模具技术的研究及发展十分重要。
此次是针对罩壳塑件的整体详细的模具设计过程。采用PC增强10%进行注塑生产,模具结构采用一模四腔的结构形式,整个过程包括对塑件的结构分析,注塑机的选定,模具浇注系统及冷却系统的设计,模腔零件和运动机构等重要尺寸的校核与设计。在注塑过程中如果想获得尺寸上的精度、塑胶件的外观、性能等等以上方面都可以满足使用要求的塑件图,在对模具制作各方面都需要要求做到,从而满足要求。从模具加工方面来看,需要加工简单,制造及维修成本低;从模具使用角度来看,要操作方便,结实耐用,以及后续维修简便。所以在模具设计时,要综合到各方面的因素与考虑,最终拟定一个合理的设计方案。
关键词:塑料模具;模具设计;尺寸的校核与设计;
Abstract
As the basic i
ndustry of
natio
nal eco
nomy, mould is widely used. A
nd developme
nt so far, mold types a
nd fu
nctio
ns gradually diversified, throughout all walks of life, is very importa
nt for eco
nomic developme
nt. Ge
nerally speaki
ng, mold is divided i
nto three categories: Hardware mold, plastic mold a
nd other special mold. Amo
ng them, plastic products are widely used i
n automobiles, electro
nics, home applia
nces, buildi
ng materials a
nd commu
nicatio
n equipme
nt. Therefore, the research a
nd developme
nt of plastic mold tech
nology is very importa
nt. This paper is a detailed mold desig
n process for the shell plastic parts. The first mock exam is made of PC e
nha
nced 10% for i
njectio
n moldi
ng. The mold structure is made of o
ne mold a
nd four cavity. The whole process i
ncludes the structural a
nalysis of the plastic parts, the selectio
n of the i
njectio
n machi
ne, the desig
n of the mold gati
ng system a
nd the cooli
ng system, the checki
ng a
nd desig
n of the importa
nt dime
nsio
ns of the cavity parts a
nd the movi
ng mecha
nism. I
n the process of i
njectio
n moldi
ng, if you wa
nt to obtai
n the plastic part drawi
ng which ca
n meet the requireme
nts i
n the aspects of dime
nsio
nal accuracy, appeara
nce a
nd performa
nce of plastic parts, you
need to meet the requireme
nts i
n all aspects of mold maki
ng, so as to meet the requireme
nts. From the perspective of mold processi
ng, it
needs simple processi
ng, low ma
nufacturi
ng a
nd mai
nte
na
nce costs; from the perspective of mold use, it
needs to be easy to operate, durable, a
nd easy to follow-up mai
nte
na
nce. So i
n the mold desig
n, to i
ntegrate all aspects of factors a
nd co
nsideratio
ns, a
nd ultimately develop a reaso
nable desig
n. Key words: plastic mold; mold desig
n; size check a
nd desig
n; 目录 摘要1 Abstract 2 第一章绪论6 1.1注塑模具的概述6 1.2塑料简述7 1.3注塑模成型工艺7 1.4注塑模具的重要性8 1.5国内模具的优劣势9 1.6国外模具的发展9 1.7注塑模具的现状与发展与课题的意义10 第二章塑件的结构分析11 2.1罩壳塑件的结构分析11 2.2塑件的工艺性分析11 2.3塑件材料的成型工艺分析12 2.4塑件测量与质量计算13 第三章初选注塑机14 3.1注塑机的注射量计算14 3.2初选注塑机15 3.3校核型腔出模数量16 第四章浇注系统的设计17 4.1分型面选择与设计17 4.2型腔数目与排位方案的确定18 4.3主流道的设计18 4.4模具分流道的设计19 4.5模具浇口设计20 4.6模具冷料穴设计21 4.7模具排气方式设计22 第五章模具调温系统的设计. 23 5.1温度调节系统的设计要点23 5.2冷却系统的设计23 5.3计算塑件每小时注射量24 5.4计算范围时间内的释放热量24 5.5计算冷却水的体积流量25 第六章成型零部件设计26 6.1成型尺寸的计算校核27 6.1.1计算塑件型腔长度径向尺寸27 6.1.2计算塑件型腔宽度径向尺寸27 6.1.3计算塑件型腔深度尺寸27 6.1.4计算塑件型芯长度径向尺寸28 6.1.5计算塑件型芯宽度径向尺寸29 6.1.6计算塑件型芯高度尺寸29 6.2计算型腔侧壁厚度30 6.3侧向分型抽芯机构设计31 6.3.1滑块导向滑槽设计31 6.3.2抽芯机构的结构形式31 6.4斜导柱滑块侧向抽芯机构计算32 6.4.1抽芯距S'的计算32 6.4.2斜导柱倾斜角设计32 6.4.3滑块抽芯力的计算32 6.4.4斜导柱直径计算33 第七章其余机构的设计与注塑机校核34 7.1脱模机构的设计34 7.1.1脱模力根据如下公式校核35 7.1.2推杆强度校核35 7.2合模导向机构的设计36 7.2.1导柱导套结构36 7.2.2复位杆弹簧结构37 7.3注塑机锁模力的校核38 7.4注射压力的校核38 7.5最大注射量校核39 7.6注塑机的开模行程的校核39 7.7模架的选择40 7.8模具工作原理说明41 总结42 致谢43 附图模具总装图44 参考文献46
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ndustry of
natio
nal eco
nomy, mould is widely used. A
nd developme
nt so far, mold types a
nd fu
nctio
ns gradually diversified, throughout all walks of life, is very importa
nt for eco
nomic developme
nt. Ge
nerally speaki
ng, mold is divided i
nto three categories: Hardware mold, plastic mold a
nd other special mold. Amo
ng them, plastic products are widely used i
n automobiles, electro
nics, home applia
nces, buildi
ng materials a
nd commu
nicatio
n equipme
nt. Therefore, the research a
nd developme
nt of plastic mold tech
nology is very importa
nt. This paper is a detailed mold desig
n process for the shell plastic parts. The first mock exam is made of PC e
nha
nced 10% for i
njectio
n moldi
ng. The mold structure is made of o
ne mold a
nd four cavity. The whole process i
ncludes the structural a
nalysis of the plastic parts, the selectio
n of the i
njectio
n machi
ne, the desig
n of the mold gati
ng system a
nd the cooli
ng system, the checki
ng a
nd desig
n of the importa
nt dime
nsio
ns of the cavity parts a
nd the movi
ng mecha
nism. I
n the process of i
njectio
n moldi
ng, if you wa
nt to obtai
n the plastic part drawi
ng which ca
n meet the requireme
nts i
n the aspects of dime
nsio
nal accuracy, appeara
nce a
nd performa
nce of plastic parts, you
need to meet the requireme
nts i
n all aspects of mold maki
ng, so as to meet the requireme
nts. From the perspective of mold processi
ng, it
needs simple processi
ng, low ma
nufacturi
ng a
nd mai
nte
na
nce costs; from the perspective of mold use, it
needs to be easy to operate, durable, a
nd easy to follow-up mai
nte
na
nce. So i
n the mold desig
n, to i
ntegrate all aspects of factors a
nd co
nsideratio
ns, a
nd ultimately develop a reaso
nable desig
n. Key words: plastic mold; mold desig
n; size check a
nd desig
n; 目录 摘要1 Abstract 2 第一章绪论6 1.1注塑模具的概述6 1.2塑料简述7 1.3注塑模成型工艺7 1.4注塑模具的重要性8 1.5国内模具的优劣势9 1.6国外模具的发展9 1.7注塑模具的现状与发展与课题的意义10 第二章塑件的结构分析11 2.1罩壳塑件的结构分析11 2.2塑件的工艺性分析11 2.3塑件材料的成型工艺分析12 2.4塑件测量与质量计算13 第三章初选注塑机14 3.1注塑机的注射量计算14 3.2初选注塑机15 3.3校核型腔出模数量16 第四章浇注系统的设计17 4.1分型面选择与设计17 4.2型腔数目与排位方案的确定18 4.3主流道的设计18 4.4模具分流道的设计19 4.5模具浇口设计20 4.6模具冷料穴设计21 4.7模具排气方式设计22 第五章模具调温系统的设计. 23 5.1温度调节系统的设计要点23 5.2冷却系统的设计23 5.3计算塑件每小时注射量24 5.4计算范围时间内的释放热量24 5.5计算冷却水的体积流量25 第六章成型零部件设计26 6.1成型尺寸的计算校核27 6.1.1计算塑件型腔长度径向尺寸27 6.1.2计算塑件型腔宽度径向尺寸27 6.1.3计算塑件型腔深度尺寸27 6.1.4计算塑件型芯长度径向尺寸28 6.1.5计算塑件型芯宽度径向尺寸29 6.1.6计算塑件型芯高度尺寸29 6.2计算型腔侧壁厚度30 6.3侧向分型抽芯机构设计31 6.3.1滑块导向滑槽设计31 6.3.2抽芯机构的结构形式31 6.4斜导柱滑块侧向抽芯机构计算32 6.4.1抽芯距S'的计算32 6.4.2斜导柱倾斜角设计32 6.4.3滑块抽芯力的计算32 6.4.4斜导柱直径计算33 第七章其余机构的设计与注塑机校核34 7.1脱模机构的设计34 7.1.1脱模力根据如下公式校核35 7.1.2推杆强度校核35 7.2合模导向机构的设计36 7.2.1导柱导套结构36 7.2.2复位杆弹簧结构37 7.3注塑机锁模力的校核38 7.4注射压力的校核38 7.5最大注射量校核39 7.6注塑机的开模行程的校核39 7.7模架的选择40 7.8模具工作原理说明41 总结42 致谢43 附图模具总装图44 参考文献46
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