机械5

摘要 近年来，中国模具市场对精密、大型、复杂型、长寿命模具的需求量有所增长，预计到2010年，国内模具市场需求量将在1，200亿元人民币左右。 综合媒体6月4日报道，中国模具协会企业年报显示：近年来，中国模具市场对精密、大型、复杂型、长寿命模具的需求量有所增长，预计到2010年，国内模具市场需求量将在1，200亿元人民币左右。 专家分析，从1997年开始，随着汽车、装备制造业、家用电器的高速增长，中国国内模具市场的需求开始显着增长。虽然到2006年中国模具工业总产值已达516亿元，但属“大路货”的冲压模具、压铸模具等约占总量的80％。已经进入中国的少量外资模具企业开始生产各种高精大多功能模具，但目前仍供不应求。据有关专家预测，在未来几年中，中国塑料模具工业还将持续保持年均增长速度达到10%以上的较高速度的发展。国内塑料模具市场以注塑模具需求量最大，其中发展重点为工程塑料模具。 注射成型是塑料成型的一种重要方法，它主要适用于热塑性塑料的成型，可以一次成型形状复杂的精密塑件。 本次设计是手机按键注塑模具设计，本题已由指导老师给出产品。所以本题的重点是模具结构的设计。本人在此过程是用UG4.0进行分模，再用CAD进行模具结构设计。 Abstract I
n rece
ntyears, the mould i
ndustry correctly of high-speed developme
nt of our
natio
nal electric i
ndustry, the especially plastic mould has put forward higher a
nd higher requireme
nt, 2004, plastic mould proportio
n rise to 30% about already amo
ngwhole mould trade, accordi
ng to the estimatio
n by releva
nt experts, duri
ng the followi
ng severalyears, Chi
nese plastic mould i
ndustrywill also keep the average a
n
nual growth rate bei
ng up to more tha
n 10% of the developme
nt at a high speed co
nti
nuously. Our cou
ntry plastic mould market i
n order to mould plastics mould to be dema
nd most heavy, develop focal poi
nt the e
ngi
neeri
ng plastics mould amo
ng them. I
nject a
n importa
nt method that shapi
ng is plastic shapi
ng, it is mai
nly suitable for the shapi
ng of the hot plasticity plastics, the precisio
n of all right shapi
ngwith complicated form moulds o
ne. This subject is to regard the storage bucket cup of the juice extractor of the small electrical home applia
nces as the desig
n model, regard it as the basis to i
nject the releva
nt k
nowledge of the mould, explai
n the plastics i
nject the desig
n process of the mould. Origi
nally desig
n a
nd mould a
nd desig
n the
note that feed cup for juice extractor carries o
n, utilize UG4.0 software to carry o
n e
ntity's model i
n mouldi
ng o
ne, have carried o
n craft a
nalysis to a structure of mouldi
ng. Have defi
ne the me
ntality of desig
ni
ng, has co
nfirmed that i
njects the craft course of shapi
ng a
nd carries o
n detailed calculatio
n a
nd check to each co
ncrete part. The structure desig
ned so ca
n guara
ntee it is reliable that the mouldworks a
nd uses, has guara
nteed to cooperatewith other parts o
ne. Drew a set of moulds i
nstallatio
n diagram a
nd part picturewith autoCAD fi
nally. This subject passes the i
njectio
n mold desig
n of feed cup for juice extractor, has co
nsolidated a
nd deepe
ned a k
nowledge of studyi
ng, have make more satisfactory result, has reached the
nticipated desig
n i
nte
ntio
n Keyword: Plastic mould; I
nject shapi
ng; Mold desig
n; 目录 摘要1 Abstract 1 引言3 第一章塑件成型工艺分析5 1.1制品材料的性能5 1.2注射工艺选择7 1.2.1 ABS塑料的干燥7 1.2.2注射压力8 1.2.3注射速度8 1.2.4模具温度8 1.2.5料量控制8 第二章模具与注射机的关系9 2.1塑件的体积计算9 2.2注射机的选择9 第三章注射模的结构设计10 3.1分型面的选择10 3.2确定型腔的数量及排列方式11 第四章浇注系统的设计12 4.1主流道设计12 4.2分流道设计13 4.3浇口设计14 第五章成型零件的设计15 5.1型腔径向尺寸计算15 5.2型芯外径尺寸计算16 5.3型腔深度尺寸计算16 5.4型芯高度尺寸计算16 5.5两成型杆的中心距计算16 第六章脱模推出机构的设计与模架的选用17 6.1脱模推出机构的设计17 6.2模架的选用17 第七章注射机工艺参数校核18 7.1注射压力的校核18 7.2锁模力的校核18 7.3模具厚度的校核19 7.4开模行程的校核19 第八章模具冷却系统19 第九章试模及模具维修21 9.1模具的安装21 9.2试模21 9.3模具的维修21 第十章结论22 致谢24 参考文献26