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摘要
熱塑性塑件的注塑,是注射模中最基本的一種,根據(jù)計(jì)算機(jī)按鈕的造型,分析可得,結(jié)構(gòu)比較簡單,沒有特殊工藝要求,公差等級低,易于實(shí)現(xiàn)大批量注塑生產(chǎn),總體構(gòu)思過程;首先收集資料,根據(jù)塑件結(jié)構(gòu)工藝性、材料收縮率、注射機(jī)器的規(guī)格、壽命措施、分型面設(shè)置、澆口形式、本廠的加工設(shè)備和技術(shù)、其他相關(guān)資料等。其次是模具結(jié)構(gòu),型腔、型芯配置及結(jié)構(gòu)、冷卻系統(tǒng)、抽芯機(jī)構(gòu)、推出機(jī)構(gòu)、澆道系統(tǒng)、排氣方式、模具材料、模架形式、標(biāo)準(zhǔn)間的選用。
根據(jù)PS 的性能,通過查閱機(jī)械制造手冊,合理控制塑件的收縮率,確定模具型腔、型芯的設(shè)計(jì)尺寸及強(qiáng)度計(jì)算校核,鎖模力平衡的確定、澆道系統(tǒng)設(shè)計(jì)、澆道和澆口平衡校核;計(jì)算機(jī)按鈕結(jié)構(gòu)不需要側(cè)抽芯機(jī)構(gòu),抽芯力的計(jì)算;冷卻系統(tǒng)設(shè)計(jì);推出機(jī)構(gòu)設(shè)計(jì)、計(jì)算推頂力;排氣方式選用。
關(guān)鍵字:計(jì)算機(jī)按鈕 澆道系統(tǒng) 分型面
Abstract
Thermoplastic injection molding of plastic parts, injection mold is the most basic kind of button in accordance with computer modeling, analysis available, relatively simple structure, there is no special process requirements, a low tolerance level, easy to achieve high-volume injection molding production, the overall idea of the process; First of all, the collection of information technology in accordance with the structure of plastic parts, material shrinkage, injection machine specifications, life measures set up surface, gate the form of factory processing equipment and technology, other relevant information. Followed by the mold structure, cavity, core configuration and structure, cooling system, core-pulling mechanism, the introduction agencies, runner system, the exhaust means, mold materials, mold form of the choice of standard room.
Reasonable control of the contraction rate of plastic parts to determine the mold cavity, the design of core size and strength check calculation, runner and gate balance check; computer side buttons do not need to draw the structure of the core institutions, the calculation of core-pulling power; cooling system design; the introduction of mechanical design, push the top edge computing; exhaust mode selection.
Keywords: plastic parts of the structure of process systems design runner runner system cavity, core