抽芯機構(gòu)在注塑模具設(shè)計的應(yīng)用-外文翻譯

1、畢業(yè)設(shè)計（論文）譯文及原稿畢業(yè)設(shè)計（論文）開題報告（含文獻綜述、外文翻譯）裝訂本插頁2-4（學(xué)生填寫）譯文題目應(yīng)用抽芯機構(gòu)在注塑模具的設(shè)計原稿題目Application of Core-pulling Mechanism in Injection Mould Design原稿出處2009 International Conference on Industrial Mechatronics and Automation抽芯機構(gòu)在注塑模具設(shè)計的應(yīng)用黃貴劍、李雪梅、吳小宇、李繼兵1。大學(xué)機電和控制工程、深圳大學(xué)、中國深圳5180602。建筑環(huán)境和管理學(xué)院,中凱大學(xué)的農(nóng)業(yè)工程,中國廣州3。機械、汽車

2、制造、華南理工大學(xué)、中國廣州,5106404深圳市重點實驗室的先進的模具制造技術(shù)、深圳大學(xué)、中國深圳518060摘 要：對兩個汽車發(fā)動機構(gòu)造特征、形成進行了分析。對注塑模具的結(jié)構(gòu)設(shè)計與兩腔和工作過程的進行了探討。模具結(jié)構(gòu)比較復(fù)雜。10抽芯機構(gòu)被合理設(shè)計在一個模具及脫模的塑料配件的實現(xiàn)。許多的插入和標(biāo)準(zhǔn)的部分用于注塑模具,這樣注塑模具、注塑模具的經(jīng)濟效益好，而且維護方便。注射模具已經(jīng)是在大規(guī)模生產(chǎn)，工業(yè)實踐證明,這個行動的抽芯機制,彈射機制和復(fù)位機制,穩(wěn)定可靠。塑料部件能滿足客戶的技術(shù)要求。關(guān)鍵詞-注塑模具、抽芯機構(gòu);幻燈片，脫模1.簡介以下是兩個汽車發(fā)動機的表面，如圖，1。塑料配件開始被大規(guī)模

3、生產(chǎn)成兩個塑料的部件，而且是要被塑造成一個模子。塑料配件是由聚丙烯(PP)做的。該配件成型后會縮0.95%。兩個塑料部件的提綱維度分別是124.26mm219.16mm78.6mm,和174.58mm221.67mm146.32mm。這兩個塑料部件的基本的壁厚是1.8毫米。而且，這個塑料部件的外觀要保持完美，澆注的標(biāo)志，不允許出現(xiàn)在塑料部件表面上。注射的缺陷，如焊接線、沉馬克,、閃光、變色等，也不允許出現(xiàn),兩個塑料部件的分隔表面制作起來是非常困難的，兩個塑料部件的分隔表面和復(fù)雜曲面具都有著凹凸不平的步驟的形狀。于是，就采用側(cè)澆扣，那里有2種構(gòu)造在A和B的塑料第一部分，在C的塑料第一部分的區(qū)域，

4、其拔模角的角度為零，并且，在六個凹進去的結(jié)構(gòu)里，C和D的塑料第一部分被限制。相應(yīng)的抽芯機制設(shè)計應(yīng)在5個地方。在F,H,G的塑料第二部分區(qū)域里，有三種構(gòu)造，I和J的塑料第二部分在這三種構(gòu)造里有六個凹進去的限制，在五個地方，相應(yīng)的cor-pulling機制也應(yīng)設(shè)計成一樣。然后十個抽芯機制將放置在一個模子。所以合理的設(shè)計機制并且注入模具是抽芯設(shè)計過程中最重要的環(huán)節(jié)。塑料第一部分塑料第二部分圖1。塑料部件二。斜導(dǎo)柱抽芯機構(gòu)的設(shè)計根據(jù)塑料配件結(jié)構(gòu)特的特點，6個斜導(dǎo)柱抽芯機機構(gòu)被設(shè)計在A、B、C的塑料第一部分以及F、G和H的塑料的第二部分，這個機制是分布在圖2。如下：圖2分布的斜導(dǎo)柱抽芯機構(gòu)，以上是斜導(dǎo)柱

5、抽芯機構(gòu)1中在圖2中的顯示，例如,該機制的主要由滑塊1、斜導(dǎo)柱4、定位螺絲釘6，滑動楔板8、耐磨護板5和耐磨護板7組成，該機制如圖3所示。當(dāng)模具打開的時候,斜頂柱被固定在固定的模具中間，引導(dǎo)下滑到模具的一半，運動沿著下滑道滑動，與其配對的斜面腔板能夠確保劈滑動作用，當(dāng)模具關(guān)閉的時候?？紤]到模具結(jié)構(gòu)及工藝參數(shù)的問題,這個傾斜角的角度被定為13度，斜板的角度被定為15。由于滑動頻繁，在接觸的滑動部件就容易磨損。為了減少部件的磨損，于是采用了以下兩個步驟，首先，滑動部件是由718H和淬火50HRC做的。耐磨護板被放置在滑動部件的底部和后面，其次，耐磨護板是由GS2510和60HRC組成，滑道是由滑動

6、鍥板和鐵芯片組成，而且，滑道很容易機和維護。 圖3 頂針板抽芯機構(gòu)1. 滑塊 2.固定件 3.壓塊. 4.斜導(dǎo)柱 5.耐磨護板 6.定位螺絲 7.耐磨護板8.滑動鍥板 9彈簧桿 三、彈射桿設(shè)計的角度抽芯機制四個斜頂桿抽芯機構(gòu)被設(shè)計在D和E的塑料第一部分，I和J的塑料第二部分。這個機構(gòu)被分布在圖4。如下：圖4斜頂桿抽芯機械的分布以在圖4顯示的斜頂桿抽芯機構(gòu)1為例, 該機制的主要是由斜頂塊1、斜頂桿9、斜頂導(dǎo)向板4、斜頂導(dǎo)向板6、斜導(dǎo)柱5、斜頂滑動桿7和耐磨護板8組成的. 這個機制是顯示在圖5，如下：圖5斜頂桿抽芯機械1. 斜頂塊 2.直線導(dǎo)套 3.帶頭導(dǎo)套 4.斜頂導(dǎo)塊 5斜導(dǎo)柱 6.斜頂導(dǎo)塊

7、7.斜頂板 8耐磨護板 9斜頂趕 10銷斜頂桿機構(gòu)是由SUJ2制作的，SUJ2是一種由優(yōu)質(zhì)鋁合金材料，而且他的表面經(jīng)過氮處理。斜頂桿的耐磨性能非常的好，通過分析和計算，斜導(dǎo)桿的傾斜角度是20，這樣的角度可以確保實現(xiàn)抽芯和的受力分布。斜頂導(dǎo)向塊是有鎳銅和被固定的鐵芯片組成，這類模具的維護是很容易的，其次，斜頂桿的精密度由斜頂導(dǎo)向塊來確保。斜頂桿機構(gòu)被固定在斜頂塊上，這個斜頂塊是沿著面針板的滑動而移動的。當(dāng)模具大塊的時候，斜頂桿隨著面針板移動，斜頂塊在側(cè)向提前隨著斜頂桿的移動而移動。就這樣，這個抽芯的目的得到了實現(xiàn)。如果執(zhí)行失敗，斜頂桿受到面針板的推動，斜頂塊由于斜頂桿而返回到起始位置的坐標(biāo)。五、

8、注塑模具的整體結(jié)構(gòu)和工作過程模具結(jié)構(gòu)如圖6。是一個模具的兩腔和側(cè)澆口的布局，10個抽芯機制如圖的的設(shè)計，是合理的，機構(gòu)緊湊的。圖6如下：圖6.模具結(jié)構(gòu)整個模具工作過程如下：融化塑料流入型腔模具通過澆注系統(tǒng)，在全部填充滿后，模具才打開。注射成型機的移動板塊由于杠桿原理一起向后移動，在模具的表面分段加工中模具被打開。塑料部件從模具的凹陷孔里被拿出，與塑料動模保持一致，斜導(dǎo)柱被插入到母模的導(dǎo)向板中，機構(gòu)的抽芯步驟由塑料動模的6個滑動塊來完成。當(dāng)模具打開的時候，必須要有一個固定的距離。塑料動模停止向后移動。注塑成型機的頂出桿向前移動，并且向頂出桿模具的頂針板前推，斜頂桿。然后那個塑料件被擠出模具，并且

9、在對噴射抽芯完成。注塑成型機的頂出桿只需要移動120毫米。當(dāng)脫模器停止運動后，塑料零件就會被取出來。這樣，脫模這個動作就完成了，那時候，模具就被封閉起來。注塑成型機的頂出桿向后移動。由于回位銷和斜導(dǎo)柱的關(guān)系，模具部件將回到他們原來的位置。在模具封閉后，第二個工作周期就開始了。六、結(jié)論模具的結(jié)構(gòu)是比較復(fù)雜的。10個抽芯機構(gòu)被合理的設(shè)計在一個模具內(nèi)及塑料部件脫模過程的實現(xiàn)。很多的鑲嵌件和標(biāo)準(zhǔn)零件被用于注塑模具。所以，注塑模具的經(jīng)濟效率非常的好,而且注塑模具的維修比較的容易。注塑模具已經(jīng)開始批量的生產(chǎn)，工業(yè)實踐證明，抽芯機構(gòu)、彈射機制和復(fù)位機制的功能是相當(dāng)?shù)姆€(wěn)定和可靠的。塑料部件已經(jīng)可以滿足客戶各方

10、面的技術(shù)要求答謝這個工作受到工程企業(yè),大學(xué)和研究機構(gòu)，廣東省教育部的大力支持和授權(quán)同意。參考。1奧斯汀c計算機輔助工程塑料注塑成型，應(yīng)用計算機輔助工程塑料注塑成型M,紐約出版社1987年出版。2王K.K、Khullar王建民W .由電腦注塑模具的設(shè)計J。塑料工程,1981年1月1日(11):25-27。3史、柯正龍”,國立中山大學(xué)電機,問陸g。注塑工藝的優(yōu)化和軟計算。智力。Adv.之日Manuf.Technol.2003;656-661。4,m. Turng Peic 。電腦輔助設(shè)計和優(yōu)化過程中注入成型。IMechE。2002;于216:1523年。5。PBtch和W.Michaeli?！白⑺?/p>

11、成型。介紹”。艾德。Hanser,慕尼黑,19956D.M.Bryce。塑料注塑成型。生產(chǎn)工藝原理”。制造工程師學(xué)會。1996年,密西根州,Dearbonr授權(quán)許可484原文2009 International Conference on Industrial Mechatronics and Automation978-1-4244-3818-1/09/$25.00 2009 IEEE ICIMA 2009Application of Core-pulling Mechanism in Injection Mould DesignHuang Guijian1, Li Xuemei2, 3,

12、Wu Xiaoyu4, Li Jibin41. College of Mechatronics and Control Engineering, ShenzhenUniversity, Shenzhen, China, 5180602. Institute of Built Environment and Control, Zhongkai University of Agriculture and Engineering, Guangzhou, China3. School of Mechanical & Automotive Engineering, SouthChinaUniversit

13、y of Technology, Guangzhou, China, 5106404 Shenzhen Key Laboratory of Advanced Mould Manufacturing Technology, ShenzhenUniversity, Shenzhen, China, 518060Email: AbstractIn this paper, the structural feature and formingtechnology of two automobile engine covers are analyzed. Themould structure with t

14、wo cavities is designed and the workingprocess of the injection mould is discussed. The mouldstructure is complicated. Ten core-pulling mechanisms aredesigned reasonably in one mould and demoulding of theplastic parts is realized. Many inserts and standard parts areused in the injection mould, so th

15、e economical efficiency of theinjection mould is well and the injection mould can bemaintained conveniently. The injection mould is already inmass production. Industrial practice proves that the action ofthe core-pulling mechanisms, ejector mechanisms and resettingmechanisms is stable and reliable.

16、The plastic parts producedcan meet the customers technical requirements.Keywords- injection mould; core-pulling mechanism; slide;demouldingI. INTRODUCTIONTwo automobile engine covers are shown in figure 1.The plastic parts are in mass production and the two plasticparts are asked to be moulded in on

17、e mould. The plastic partsare made of polypropylene (PP). The molding shrinkage is0.95%. The outline dimensions of two plastic parts are124.26mm219.16mm78.6mm and174.58mm221.67mm146.32mm. The basic wall thicknessof the two plastic parts is 1.8mm. The appearance of theplastic parts should maintain pe

18、rfect. The mark of pouringand ejecting is not allowable to appear on the plastic part.The disfigurement of injection such as weld lines, sink mark,flashing, splay, etc. is not allowable to appear either. Designof the parting surface of the two plastic parts is difficult. Theparting surface is compli

19、cated curved surface and it hasuneven step shape. The side gate is adopted. There are tworeentrant structures in the area of A and B of the plastic part1, the draft angle is zero in the area of C of the plastic part 1and there are six reentrant structures within the limit of Dand E of the plastic pa

20、rt 1. The corresponding core-pullingmechanisms should be designed in the five places. There arethree reentrant structures in the area of F, G and H of theplastic 2 and there are six reentrant structures within the limitof I and J of the plastic part 2. The corresponding cor-pullingmechanisms should

21、be designed in the five places also. Thenten core-pulling mechanisms will be placed in one mould. Sothe reasonable design of the core-pulling mechanisms is themost important in the course of designing the injectionmould.II. DESIGN OF ANGLE PIN CORE-PULLING MECHANISMSAccording to the structure featur

22、e of the plastic parts, sixangle pin core-pulling mechanisms are designed in the areaof A, B and C of the plastic part 1 and in the area of F, G andH of the plastic part 2. The mechanisms are distributed inFigure 2.Fig.2 Distribution of the angle pin core-pulling mechanismsTaking the angle pin core-

23、pulling mechanism 1 shown inFig.2 for example, the mechanism is mostly composed ofslide 1, angle pin 4, positioning screw 6, slide wedge 8, wearplate 5 and wear plate 7. The mechanism is shown in figure 3When the mould is opened, the angle pin fixed in thefixed half of the mould guides the slide in

24、the moving half ofthe mould. The slide moves outward along the slide way.The inclined plane of the cavity plate which is mated withthe slide can ensure wedging the slide when the mould isclosed. Considering the mould structure and processparameters, the inclined angle of the angle pin is 13and thein

25、clined angle in the cavity plate is 15. The slide and thecomponents which are in touch with the slide are easy towear because the slide moves frequently. In order topostpone wearing the components, the two steps are adoptedas follow: The slide is made of 718H and is quenched to50HRC around. The wear

26、 plates are laid on the bottom of theslide and on the back of the slide. The wear plates are madeof GS2510 and are quenched to 60HRC around. The slideway is formed by the slide wedge and the core plate. Theslide way is easy to machine and to maintain.1. slide 2. fixed block 3. locking block 4. angle

27、 pin 5. wearplate 6. positioning screw 7.wear plate 8. slide wedge 9.spring rodFigure 3. Angle pin core-pulling mechanismIII. DESIGN OF ANGLE EJECTOR ROD CORE-PULLINGMECHANISMSFour angle ejector rod core-pulling mechanisms aredesigned in the area of D and E of the plastic part 1 and inthe area of I

28、and J of the plastic part 2. The mechanisms aredistributed in figure 4.Fig.4 Distribution of angle ejector rod core-pullingmechanismsTaking the angle ejector rod core-pulling mechanism 1shown in figure 4 for example, the mechanism is mostlycomposed of angle ejector block 1, angle ejector rod 9, angl

29、eejector guide block 4, angle ejector guide block 6, angle pin5, angle ejector slide 7 and wear plate 8. The mechanism isshown in figure 51. angle ejector block 2. straight guide bush 3. headed guidebush 4. angle ejector guide block 5. angle pin 6. angleejector guide block 7. angle ejector slide 8.

30、wear plate 9.angle ejector rod 10. pinFigure 5. Angle ejector rod core-pulling mechanismThe angle ejector rod is made of SUJ2 which is premiumalloy material and the surface is in nitrogen treatment. Thewear resistance of the angle ejector rod is well. By analyzingand computing, the Inclined angle of

31、 the angle ejector rod is20which ensures the realization of the core-pulling and thebetter power distribution. The angle ejector guide block ismade of nickel bronze and is fixed in the core plate. Themould is easily maintained and the precision of the angleejector rod is ensured by using the angle e

32、jector guide block.The angle ejector rod is fixed in the angle ejector slide whichmoves along the slide way of the ejector retainer plate. Whenthe mould is opened, the angle ejector rod moves with theejector retainer plate. The angle ejector block moves aheadwith the angle ejector rod and moves in t

33、he side direction. Sothe core-pulling is achieved. The angle ejector block returnsto its original position in virtue of the angle ejector rod whichis driven by the ejector retainer plate.IV. OVERALL STRUCTURE AND WORKING PROCESS OF THEINJECTION MOULDThe mould structure is shown in figure 6. The layo

34、ut oftwo cavities in one mould and side gate are adopted. The tencore-pulling mechanisms shown in figure 6 is reasonablydesigned and compact in terms of structure.Figure 6. Mould structureThe whole working process of the mould is as follow:The melt plastic flows into the cavity of the mould throught

35、he feed system and the mould is opened after full packingand cooling. The moving plate of the injection machinemoves back together with the moving half of the injectionmould and the mould opened between the parting face of themould. The plastic parts are pulled from the cavities ofmould and stay wit

36、h the moving half of the mould. The anglepins fixed in the cavity plate guide the six slides in themoving half of the mould to finish core-pulling. When themould is opened for a fixed distance, the moving half of themould stops moving back. The ejector rods of the injectionmachine move ahead and pus

37、h forward the ejector plate ofthe mould with the ejector rods, angle ejector rods. Then theplastic parts are pushed out of the injection mould and corepullingis accomplished during the ejecting. When ejectorrods of the injection machine move just for 120mm, theejector mechanism stops moving and the

38、plastic parts aretaken out. The action of demoulding is completed. When themould is closed, the ejector rods of the injection machinemove back. The mould components return to their originalposition in virtue of the return pins and the angle pins. Thesecond working cycle begins after the mould is closed.V. CONCLUSIONThe mould structure is complicated. Ten core-pullingmechanisms are designed reasonably in one mould anddemoulding of the plastic parts is realized. Many inserts andstandard parts are used in the injection mould, so theeconomical efficiency of the injection mould is well and theinje