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外觀似聚乙烯,但比聚乙烯更透明、更輕。 桂林電子科技大學(xué)畢業(yè)設(shè)計(jì)(論文)報(bào)告用紙 1 塑件工藝特性分析 塑件 使用 材料 的 工藝 分析 通常 , 選擇塑件的材料依據(jù)是它所處在的工作環(huán)境及使用性能的要求 , 以及原材料廠家提供的材料性能數(shù)據(jù) 。 美國(guó) PTC 公司的三維設(shè)計(jì)軟件 Pro/E 能實(shí)現(xiàn)產(chǎn)品設(shè)計(jì)、模具分型、模具結(jié)構(gòu)設(shè)計(jì)和模具數(shù)控加工等一整套自動(dòng)化功能。 塑料加工方法的種類很多,注塑成型是其中之一,也是最常用的成型方法。隨著工業(yè)塑料制件和日用塑料制件的品種和需求量日益增加,這些產(chǎn)品的更新?lián)Q代的周期愈來(lái)愈短,因此對(duì)塑料的品種、產(chǎn)量和質(zhì)量多提出高的要求。 塑料工業(yè)是新興的工業(yè),是隨著石油工業(yè)的發(fā)展應(yīng)運(yùn)而生的,目前塑料制件幾乎已經(jīng)進(jìn)入一切工業(yè)部門(mén)以及人民日常生活的各個(gè)領(lǐng)域。 Corepulling mechanism桂林電子科技大學(xué)畢業(yè)設(shè)計(jì)(論文)報(bào)告用紙 目 錄 緒 論 .................................................................................................................................... 1 1 塑件工藝特性分析 ................................................................................................. 2 塑件使用材料的工藝分析 ................................................................................................. 2 聚丙烯( PP) .................................................................................................................. 2 丙烯腈 — 丁二烯 — 苯乙烯三元共聚物( ABS) ........................................................... 2 聚苯乙烯( PS) ............................................................................................................... 3 PP 成型特點(diǎn) ...................................................................................................................... 3 塑件結(jié)構(gòu)工藝性分析 ......................................................................................................... 4 塑件尺寸精度 ................................................................................................................... 5 脫模斜度 ........................................................................................................................... 5 塑件壁厚 ........................................................................................................................... 5 2 成型工藝方案的確定 ............................................................................................ 7 分型面的選擇 ..................................................................................................................... 7 型腔數(shù)目的確定 ................................................................................................................. 8 3 注射機(jī)的選擇 ............................................................................................................ 9 注射機(jī)的選用原則 ............................................................................................................. 9 塑件體積與質(zhì)量的計(jì)算 ..................................................................................................... 9 注射量的計(jì)算 ..................................................................................................................... 9 塑件所需鎖模力的計(jì)算 ................................................................................................... 10 注射機(jī)型號(hào)的確定 ........................................................................................................... 10 4 澆注系統(tǒng)設(shè)計(jì) .......................................................................................................... 12 主流道設(shè)計(jì) ....................................................................................................................... 12 冷料穴的設(shè)計(jì) ................................................................................................................... 13 分流道的設(shè)計(jì) ................................................................................................................... 14 分流道的截面形式與尺寸 ............................................................................................. 14 桂林電子科技大學(xué)畢業(yè)設(shè)計(jì)(論文)報(bào)告用紙 分流道的布置 ................................................................................................................. 15 分流道的長(zhǎng)度 ................................................................................................................. 15 分流道的表面粗糙度 ..................................................................................................... 15 澆口的設(shè)計(jì) ....................................................................................................................... 15 澆口的類型 ..................................................................................................................... 15 澆口位置的選擇 ............................................................................................................. 16 澆口尺寸的確定 ............................................................................................................. 17 5 排氣系統(tǒng)的設(shè)計(jì) ..................................................................................................... 18 排氣方式的選擇 ............................................................................................................... 18 開(kāi)設(shè)排氣槽應(yīng)注意以下幾個(gè) 要點(diǎn)。 Familiar with mould design software for use of the fastest, most superior finish design method, the design of the software I use to plete parts modelling and formwork assembly, reintroduce AutoCAD, finally AutoCAD2021 painted a set with mold assembly drawing and parts graph, design process to pare various solutions, and optimize the design, with a large picture in order to better understand the design. Key words: Injection mold。 用 Moldflow 進(jìn)行模流分析,選擇最佳澆口位置,分析壓力降、熔接痕、氣 穴 、翹曲等情況 ,以及對(duì) 成型零件尺寸的計(jì)算和對(duì)注射機(jī)的鎖模力、最大注射量、注射壓力、開(kāi)模行程和模具與注射機(jī)安裝部分相關(guān)尺寸的校核。 本次設(shè)計(jì)圍繞 電熱取暖器控制面板 的注射模設(shè)計(jì)展開(kāi)的, 介紹了注塑成型的基本原理,特別是單分型面注塑模的結(jié)構(gòu)與工作原理, 利用模具設(shè)計(jì)軟件進(jìn)行設(shè)計(jì)及制圖,完成對(duì) 電熱取暖器控制面板 注射模具的總體設(shè)計(jì), 首先將塑件進(jìn)行 3D 造型,并對(duì)塑件進(jìn)行工藝性分析,分析 塑料件的形狀特點(diǎn)、尺寸大小、尺寸標(biāo)注方法、精度要求、表面質(zhì)量和材料性質(zhì)等因素。 關(guān)鍵詞: 注塑模; 澆口 ; 澆注系統(tǒng) ; 推出機(jī)構(gòu) ; 抽芯機(jī)構(gòu)桂林電子科技大學(xué)畢業(yè)設(shè)計(jì)(論文)報(bào)告用紙 Abstract Plastic industry is one of the fastest growing industrial categories in the world, and injection mold is one of the types of the fast development, therefore, the study to understand plastic injection mold production process and improve the quality of products has great significance. The electric heater control panel design around the design of injection mould to launch, and introduces the basic principle of injection molding, espec