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鹽城工學(xué)院本科生畢業(yè)設(shè)計說明書 2008
電風(fēng)扇前罩注塑模具設(shè)計
摘要：本設(shè)計課題來源于鹽城市江蘇羽佳集團(tuán)。所設(shè)計的模具是用于生產(chǎn)電風(fēng)扇前罩的專用模具。該套模具適合于大批量多件生產(chǎn)，在實際生產(chǎn)中能夠很好的滿足注塑制件的加工要求，提高生產(chǎn)率和產(chǎn)品的精度。
通過分析塑件的成型工藝,選擇聚丙烯的成型工藝參數(shù),設(shè)計了一模一腔的注射模具。按聚丙烯的平均收縮率設(shè)計計算模具成型尺寸,設(shè)計鏈傳動機構(gòu),用旋轉(zhuǎn)脫出的方法解決塑件細(xì)紋脫模問題。設(shè)計內(nèi)容主要包括塑件的工藝性分析，注塑模具的總體結(jié)構(gòu)設(shè)計以及模具三維造型三個主要部分。在設(shè)計過程中，以模具的總體結(jié)構(gòu)設(shè)計為主線，從成型工藝、塑件的設(shè)計原則、模具結(jié)構(gòu)合理性等方面綜合分析；根據(jù)塑件的形狀和尺寸確定模具的總體結(jié)構(gòu)方案，選擇合理的模具結(jié)構(gòu)，最終繪制出模具的總體裝配圖。模具一次試模成功,運行靈活可靠,塑件精度達(dá)到設(shè)計要求,外表面光潔,給企業(yè)創(chuàng)造了經(jīng)濟效益。
關(guān)鍵詞：注塑模具；工藝；造型；裝配
Design of Injection Mould for Electric Fan Front Shell
Abstract: The design issues from Yujia Group of Yancheng City in Jiangsu.The mold is designed for the production of Electric Fan Front Shell of an exclusive die. The mold used for large quantities production,in the actual production to meet the good parts of the injection processing requirements,improve productivity and product precision.
By analysis the molding processes of plastic parts choosing the molding paramert -ers of polypropylene. The molding size was designed according to the average shrink -age ratio of polypropylene. The microgroove demoulding problem was solved though the design of the chain driving system and the revolving method. Design elements incl -ude the process analysis of plastic parts, the overall structure of injection mold design and Die 3-D modeling three main sections.In the design process, to the mold overall st -ructural design as the main line, Comprehensive analysis from the molding process,th -e design principles of plastic parts and Die structure rational Etc Respects. According to the shape and size of die plastic parts determine the overall structure of the program, select a reasonable die structure and draw The mold assembly diagram at eventually. t -he forming trial of the die was successful. The operation can be run reliably and flexi -bly, the precision of plastic components can achieve the requirements of the design a -nd the outside surface is smooth. Thus, the new injection die has created the economi -c benefits for the enterprise.
Key words: injection mold; process; modeling; assembly