【正文】 常州工學院機電工程學院畢業(yè)設計論文 25 側向抽芯機構： 當塑件上具有與開模方向不一致的孔或側壁有凹凸形狀時，除極少數(shù)情況下可以強制脫模外，一般都必須將成型側孔或側凹的零件做成可活動的結構，在塑件脫模前，先將其抽出，然后才能將整個塑件從模具中脫出。 成型零部件的設計與計算 凹模和型芯的尺寸計算 凹模的結構采用整體嵌入式，這樣有利于節(jié)省貴重金屬材料。推桿上進料口的寬度 b=～ 2mm。主流道的長度 L 一般控制在 60mm 之內，可取 L=55mm。 （ 4）分型面應有利于側向抽芯。塑化壓力對熔體的實際溫度、塑化效率及成型周期均有影響。 2． 3塑料的注射工藝參數(shù)的確定及模架的選擇 計算塑料件的重量是為了選用注射機及確定模具型腔數(shù)。 流動性中等，溢邊料 左右 (流動性比聚苯乙烯， AS差，但比聚碳酸酯、聚氯乙烯好 )。在模具制造上采用自動化無人操作，從 1996 年開始每臺機床每年可達 8000h 無人操作運轉開始起步，這一成果已廣為利 用和大力推廣。 關鍵詞： 注射模具 一模兩腔 模具設計 模擬分析 常州工學院機電工程學院畢業(yè)設計論文 ii ABSTRACT My graduation project is the injection simulation analysis and the design of the injection mold of the side cover of the disinfect a structure characteristics of the plastic part were analyzed. The Moldflow software was used for the simulation analysis and optimization of the gate position for the plastic part. By optimizing the process parameters, the defects of the injection molding were successfully avoided. Based on the simulation result, the structure designing and the material selection of its injection mold had been finished. The injection mold with two cavities adopted the hidden gate system and side corepulling CAE optimizing with mold design could shorten the mold developing cycle, reduce the product development cost and enhance the product quality. The mold was convenient to operate , with proper structure and high efficiency. Keywords: Plastic mould two cavities of the mold mold design simulation analysis 常州工學院機電工程學院畢業(yè)設計論文 I 目錄 言 ........................................................... 1 .........................................................................................................................................................................1 ................................................................................................................................................................1 ....................................................................................................................................................1 ....................................................................................................................................................2 ....................................................................................................................................................2 ...........................................................2 .....................................................2 .................................. 3 2． 1塑料的原材料分析 .............................................................................................................................................3 ......................................................................................................3 ...........................................................3 .........................................................4 .............................................................4 2． 3塑料的注射工藝參數(shù)的確定及模架的選擇 ....................................................................................................4 3. MOLD FLOW 模擬分析 ................................................ 7 3． 1網(wǎng)格劃分和修改結果 .........................................................................................................................................7 ...........................................................................................................................7 .....................................................8 ...................................... 12 ..................................................................................................................................................... 12 ..................................................................................................................................................... 12 ........................................................................................................................................ 13 ................................................................................................................................................. 13 ． 1主流道的設計 .............................................................13 ......................................................14 ..............................................................14 ................................................................15 、冷卻系統(tǒng)的設計與計算 ........................................ 16 ................................................................................................................................................. 16 .................................................................................................................................... 17 ................................................... 19 ............................................................................................................................................. 19 常州工學院機電工程學院畢業(yè)設計論文 II ................................................................................................................................ 19 ......................................................19 型腔壁厚和底板厚度的計算 ........................................................................................................................... 22 ： ......................................................22 底板厚