1、Unit One Mold Constructions,Passage One Plastics Forming and Molds,Passage Two Three -plate Injection Molds,Mold muld 模具 Constructions knstrkn 結(jié)構(gòu) Passage psid 段落 Plastics plstiks 塑料 Forming f:m 形成和成型 plate pleit 碟,盤(pán),金屬板,板塊 Injection indekn 注射,第一段 塑料成型與模具,模具結(jié)構(gòu),第二段 三板式注射模具,Unit One Mold Constructions,

2、Passage One Plastics Forming and Molds,1,1.General denrl 一般,大體 ,概要 The continuing development of injection mold technology demands more and more of the processes.,continue kntinju: v. 繼續(xù),連續(xù) ； development divelpmnt n. 發(fā)展,顯影 technology teknldi n. 技術(shù),工藝 ；demands dim:nd v. 要求 processes prses n. 過(guò)程， 工藝流程

3、,undoubtedly ndatidli ad. 無(wú)疑(畢定) molding shop 成型車(chē)間 influence influns v. 影響 if any”引出轉(zhuǎn)折狀語(yǔ)從句，譯為“即便要”。 on對(duì)，依賴(lài),The most important problem in the process of injection molding is undoubtedly the correct design of injection mold， because the molding shop has little influence， if any， on the construction of

4、 the machine.,第一段 塑料成型與模具,Unit One Mold Constructions,Efficient production of the most diverse injection -molded parts depends primarily on the injection mold.,模具結(jié)構(gòu),The durability of the molds depends on their care and treatment. Since the moving components and cavity of the mold are always hardened

5、 and ground ， they should produce between 500 000 and 1 000 000 000 shots.,高效率地生產(chǎn)各類(lèi)注射成型零件首先取決于注射模具。 diverse daiv:s a. 不同的, 多種多樣的,模具的使用壽命取決于對(duì)它們的維護(hù)保養(yǎng)和加工處理，例如對(duì)一些活動(dòng)件及型腔的表面硬化和磨削加工，使得它們的生產(chǎn)批量可以達(dá)到500 0001 000 000 000件。 Grind graind （ground，ground） v.磨削，磨光,For ease of construction and to lower manufacturing

6、cost， injection molds are becoming standardized. Some firms offer ready -made bases of square or round design as standard or stripper plate molds for immediate use. Only the inserts then have to be fitted into the bases.,Unit One Mold Constructions,為了簡(jiǎn)化模具結(jié)構(gòu)和降低制造成本，使注射模具標(biāo)準(zhǔn)化，許多制造商提供了已經(jīng)生產(chǎn) 好的標(biāo)準(zhǔn)方形或圓形底及脫模

7、板供直接使用，僅需要將它們很好地與機(jī)座配合起來(lái)就可以了。,firm f:m a. 堅(jiān)定的,堅(jiān)固的,結(jié)實(shí)的 ；n. 商行,公司 standardize stnddaiz v. 標(biāo)準(zhǔn)化,使合于標(biāo)準(zhǔn) insert ins:t v. 插入,Unit One Mold Constructions,2.Basic Mold Construction （1）Operating Principle Basically the injection mold consists of two halves. One mold half contains the sprue bushing and runner sy

8、stem， the other half houses the ejection system. The molded part is located at the parting line（ref. To DIN 16700）.,模具結(jié)構(gòu),2.模具的基本結(jié)構(gòu) （1）工作原理 從根本上說(shuō)，注射模具包括兩個(gè)部分:一部分包括澆口和澆注系統(tǒng)，另一部分是放置頂出系統(tǒng)。模具零件是在分型面被定位的（參考DIN 16700）。,basically beisikli ad. 基本上,主要地 Consists of knsist v.由 組成 halves h:vz 同分?jǐn)?shù) is located at被放置在

9、DIN 16700德國(guó)標(biāo)準(zhǔn)化組織16700,（2） Single or Multicavity Molds To set up a calculation conceiving the choice of cavities in an injection mold requires accurate knowledge of the material to be processed， of the injection -molding machine and of the molds. The mold costs increase with the rising number of cavi

10、ties and the relative machine costs decrease.,Unit One Mold Constructions,（2）單型腔注射模具及多型腔注射模具 注射模具型腔選擇等設(shè)計(jì)計(jì)算要求掌握加工材料、注射機(jī)和模具等方面的準(zhǔn)確知識(shí)。 模具的制造成本隨著型腔數(shù)目的增加而增加，而相關(guān)的加工費(fèi)用減少了。,single -cavity mold 單型腔注射模具 multicavity mold 多型腔注射模具 calculationklkjulein n. 計(jì)算 conceive knsi:v v. 構(gòu)思,以為,懷孕 be processed 被加工 relative re

11、ltiv a. 相對(duì)的,比較的,The production time required for a given molded part depends on the wall thickness， the injection speed， the recovery rate， the time required to cool the molded material， the cooling capacity of the mold and the necessary incidental time such as duration of pressure holding time， eje

12、ction time， delay time， etc.,Unit One Mold Constructions,一個(gè)給定的模具零件的生產(chǎn)周期取決于壁厚、注射速度、收縮率、模內(nèi)材料的冷卻時(shí)間、冷卻的效能及必要的輔助時(shí)間，如壓力持續(xù)時(shí)間、排氣時(shí)間及延遲時(shí)間等。,Recovery rate rikvri 回收率 ,復(fù)原 Capacity kpsiti 容量,容積,能量,生產(chǎn)力 incidental ,insidentl附帶的 ,伴隨的,輔助的 such as 例如 Duration djurein 持續(xù),持久;持續(xù)期間,Therefore the decision concerning the n

13、umber of cavities to be determined depends on: size of the order（number of molded parts in connection with delivery time）; shape of the molded parts（size， quality requirements）;,Unit One Mold Constructions,因此確定型腔數(shù)量的主要因素涉及以下幾點(diǎn): 訂單大小（制品數(shù)量及相關(guān)交貨時(shí)間）; 制品形狀（尺寸、質(zhì)量要求）;,Therefore f: 因此;因而;所以 Concerning kns:ni

14、 關(guān)于，因素 Cavities kviti 型控母模 Order訂購(gòu);訂貨，匯票,匯單 Delivery dilivri 交付,交貨 Shape eip 形狀;樣子,外形,injection -molding machine（ clamping force， plasticizing and injection capacity）; mold costs. There are several known procedures for calculating the economical number of cavities. Unfortunately they are so varied t

15、hat it is impossible to condense them.,Unit One Mold Constructions,clamping force klmp 夾緊力，合模力 Capacity kpsiti容量,容積 Procedures prsi:d程序;方法;步驟 Unfortunately遺憾地;不幸地 Condense kndens壓縮;濃縮 ；使簡(jiǎn)潔,縮短,注射機(jī)（合模力、可塑性、注射容量）; 模具費(fèi)用。 盡管已有多種計(jì)算經(jīng)濟(jì)型腔數(shù)目的方法，但這些計(jì)算方法多種多樣，根本沒(méi)法將它們提煉成為簡(jiǎn)便公式。,As an example: The theoretical max.

16、number of cavities is: F1=Max.injection volume of machine（cm3）/Volume of molded parts，sprue and runner（cm3） F2=Plasticizing capacity（cm3/min）/Number of shots/min（part，sprue and runner（cm3） F2 must be equal to or smaller than F1. F1 is the maximum number of cavities attainable.,Unit One Mold Construc

17、tions,plasticize pl stisaiz v.（使）成為可塑;（使）可塑 injection capacity注射容量 Theoretical iretikl理論的 Sprue spru:注料口;澆注口,例如: 型腔的理論最大數(shù)目為 ： F1=注射機(jī)注射容量的最大值（cm3） /制件、注料口和流道體積（cm3） F2=注塑容量（cm3/min） /制造數(shù)量/min（制件、注料口和流道（cm3） F2必須小于等于F1 ，F(xiàn)1是可得到的型腔數(shù)目的最大值。,Unit One Mold Constructions,動(dòng)模座板,頂料板 （Ejector plate）,頂料桿，出料桿,注塑機(jī)頂

18、桿,導(dǎo)柱/導(dǎo)套,墊腳，模腳,凸模板,凹模板,冷卻水道,定位環(huán),主流道,主流道襯套,澆注系統(tǒng),靜模座板,導(dǎo)柱,導(dǎo)套,動(dòng)模墊板,Unit Three Mold Constructions,Passage Two Three -plate Injection Molds,2,Three -plate injection molds are injection molds possessing two parting lines， having been designed as degating molds.,This means that the sprue is separated from th

19、e parts in the mold. At the conclusion of injection the mold opens at the first parting line， which contains the sprue and runner and separated the pinpoint gate from the part.,三板式注射模具是具有兩個(gè)分型面的注射模具 ，這種模具帶有澆口,也就是直澆道在模型中和塑件相分離。在注射結(jié)束之后，模具沿第一層分型面開(kāi)模，其中包含了注料口、澆道和塑件中分流的針孔型澆口。,possessingpzes擁有,持有;具有;占有； Mea

20、ns意味著； sprue ；spru:直澆道； is separated 被分離； conclusionknklu:n結(jié)尾,結(jié)局,Unit One Mold Constructions,模具結(jié)構(gòu),Only when the second parting line opened， the part would be released. There are several possibilities for achieving this.,僅當(dāng)沿第二層分型面開(kāi)模時(shí)，塑件才脫離型芯。有多種可能性來(lái)實(shí)現(xiàn)這種情況。,would be released rili:s 放松,松開(kāi) possibility ,

21、psbiliti 可能性 Achieving ti:v 完成,實(shí)現(xiàn),Unit One Mold Constructions,模具結(jié)構(gòu),In Fig.3 -1， with short stroke distances of plate 2， compression spring 4 or spring washers can be inserted between plate 1 and plate 2， which push plate 2 forward. The stop 3 limits the stroke.,在圖3 -1中，模板2具有一個(gè)短小的行程距離，壓縮彈簧4或彈簧墊圈可以插入模

22、板1 和模板2之間，推動(dòng)模板2向前，而止動(dòng)銷(xiāo)3則可以限制模板2的行程。,Fig.3 -1 Spring type 1plate;2push plate;3stop; 4compression spring,Fig. figure fig的縮寫(xiě) 圖表;圖解;插圖 stroke struk 沖程,行程,Unit One Mold Constructions,The retention system of plate 1 shown in Fig.3 -2 is often employed. Dowel 2 is provided with an annular groove 3 into whi

23、ch the ball catch 4 is pushed. A not too heavy plate can be carried along by the resultant adhesive effect.,模具結(jié)構(gòu),Fig.3-2 Retention system 1plate;2dowel;3annular groove;4ball catch,在圖3 -2中，模板1在滯留系統(tǒng)中也經(jīng)常被使用。定位銷(xiāo)2中有一個(gè)環(huán)形凹槽3可以使球掣4進(jìn)入，一塊不太厚的模板可以沿著黏合面而移動(dòng)。,retention system ritenn保留;保持 Is employed impli使用,利用； D

24、owel daul定位銷(xiāo) nnular njul 環(huán)狀的,輪狀的;有環(huán)紋的 groove gru:v 溝;槽 Resultant rizltnt組合的,合成的 Adhesive dhi:siv粘的;粘著的; effect ifekt效果,效力;作用;,Unit Three Mold Constructions,The plate 2 to be moved in Fig.3 -3 is connected to the ejector plates by ejector rods， which in turn are fixed in their basic position by stron

25、g spring 3. Plate 2 is carried along until the ejector plates are stopped by running against the ejector bar of the machine.,圖3-3中的模板2通過(guò)頂料桿和頂料板相連。頂料桿由強(qiáng)度很大的彈簧3依次固定在它們的基本位置。模板2被移動(dòng)直到頂料板由于撞上機(jī)器的推出桿而停止。,Fig.3-3 Three-plate injection mold 1plate1;2plate2;3spring; 4ejector rod;5ejector bar,is connected to通過(guò)

26、.被連接 be moved in被搬入 in turn依次，輪流 is carried along被移動(dòng) ；running against撞上,Unit Three Mold Constructions,當(dāng)一個(gè)完整的模型保持正常方式運(yùn)行時(shí)，需注意推出桿5應(yīng)設(shè)計(jì)得稍長(zhǎng)點(diǎn)。,Then only the complete mold body keeps moving on in the usual manner. Care must be taken with this design that the ejector bar 5 is slightly delayed.,ejector bar 推出

27、桿 delayed.1.延緩;使延期 2.耽擱;延誤,Unit One Mold Constructions,They must not be rigidly connected to the ejector plate; otherwise there would be a tendency for the parts to be pushed back into the cavities in plate 2. With this design the stroke of plate 2 can be arbitrary,模具結(jié)構(gòu),Moreover， when the ejector ro

28、ds 4 are hardened and guided in bushes， these ejector rods can take over the function of the guide pins fitted on the fixed mold half，,頂料桿不能和頂料板剛性相連，否則塑件將會(huì)有被推回模板2型腔的可能。對(duì)于這種設(shè)計(jì)，模板2的行程可以是任意的。,而且當(dāng)頂料桿4被加固并且用軸套引導(dǎo)時(shí)，這些頂料桿可替代導(dǎo)向銷(xiāo)的作用來(lái)與定模部分配合，,Rigidly rididli 僵硬地;嚴(yán)厲地;嚴(yán)格地;固執(zhí)地 Otherwise waiz 否則 tendency tendnsi傾向

29、;趨勢(shì) Arbitrary :bi,trri 隨心所欲的,任意的,Unit One Mold Constructions,so that the space between plates 1 and 2 is not cluttered up with protruding rods or springs . This can be of advantage if a rather complicated runner system has to be designed.,模具結(jié)構(gòu),所以在模板1和模板2之間不能亂放伸出桿或彈簧。如果要設(shè)計(jì)一個(gè)非常復(fù)雜的澆道系統(tǒng)，這種方法具有優(yōu)勢(shì)。,Clutte

30、r klt 使凌亂;亂堆在,塞滿(+up) Protruding prtru:d vt伸出,突出 Springs 彈簧 Rather r: 相當(dāng),頗,有點(diǎn)兒 Complicated kmplikeitid 復(fù)雜的,Unit One Mold Constructions,模具結(jié)構(gòu),Fig.3 -4 shows a mechanical type of plate movement. Although more elaborate， it is nevertheless the safest way， particularly if large， heavy plates have to be m

31、oved. The latch 3， which hooks over plate 1， moves the latter along.,圖3-4所示為平板運(yùn)動(dòng)的機(jī)械形式。雖然這種形式更為精細(xì)，但這無(wú)疑是最安全的方法，特別是當(dāng)大而重的平板需要被移動(dòng)時(shí)。掛在模板1上的插銷(xiāo)3沿著模板移動(dòng)，,Fig.3-4 Plate movement 1plate;2pin;3latch;4guide strip;5leaf spring;6waterway,elaborate ilbrit 精細(xì),精心制作的 nevertheless ,nevles 仍然,不過(guò),然而 hook huk 鉤住,圖3-4 模板運(yùn)動(dòng)

32、1模板; 2銷(xiāo); 3插銷(xiāo); 4導(dǎo)軌; 5片彈簧;6冷卻水道,Unit One Mold Constructions,模具結(jié)構(gòu),The movement is continued until the pin 2 in the hook is lifted by the rise in the guide strip 4 on which it runs. The pin has to escape upward， thereby releasing the hook from the plate 2. The plate now pushes up against a stop， which i

33、n this case has been fitted to the underside of the guide strip at 6， and the mold can continue opening.,直到銷(xiāo)被滑塊抬起，銷(xiāo)不得不向上移動(dòng)，所以釋放了模板1上的掛鉤。這時(shí)模板反向止動(dòng)銷(xiāo)向上推，在這種情況下，止動(dòng)銷(xiāo)已在6處與導(dǎo)軌的下側(cè)相配合，所以模具能一直打開(kāi)。,escape iskeip 逃跑;逃脫 thereby 因此,由此,從而 guide strip strip支板 ; 導(dǎo)軌,Unit One Mold Constructions,The hook is pushed down ag

34、ain by the leaf spring 5.,模具結(jié)構(gòu),Fig.3 -5 illustrates a typical degating tool. Contrary to the usual mold design， this tool has an additional mold parting line for the star -shaped runner.,然后，掛鉤再一次被片彈簧5向下拉。,圖3-5所示為一典型注塑模具。與通常的模具設(shè)計(jì)不同，在此模具中為星形流道設(shè)計(jì)了一個(gè)附加的模具分型線。,illustrates ilstreit (用圖,實(shí)例等)說(shuō)明,闡明(+with) Co

35、ntrary kntrri 相反的,對(duì)立的(+to) additional dinl添加的;附加的;額外的,Unit Three Mold Constructions,Fig.3-5 Typical degating tool 1sprue separating area; 2latch; 3sprue; 4retainer pin; 5head of bolt; 6sprue-stripping plate; 7pin; 8guide strip; 9waterway; 10bolt; 11main parting line; 12ejector rod; 13stripper sleeve

36、; 14plate assembly; 15mold cores,圖3-5 典型注塑模具 1澆道分離面; 2、10插銷(xiāo); 3直澆道; 4固定銷(xiāo); 5、10插銷(xiāo)頭; 6注料口分模板; 7銷(xiāo); 8導(dǎo)軌; 9冷卻水道; 11主要分型線; 12卸料桿; 13分型（模）套; 14模板裝置; 15模具型芯,Unit One Mold Constructions,Mold constructed on this principle is preferably employed because of the simplicity of the gating technique .,模具結(jié)構(gòu),But there

37、 is some concern that bulky runner often do not drop easily between the mold parting lines. It is important that a sufficiently large gap always be set.,因?yàn)橛泻?jiǎn)單的脈沖選通技術(shù)，所以用這種方法設(shè)計(jì)的模具更適于使用。,但是需要注意的是，通常大澆道不易滴在分型線之間，所以大的間隙設(shè)計(jì)是非常重要的。,Constructed knstrkt 建造,構(gòu)成，設(shè)計(jì)； principleprinspl原則;原理 preferablyprefrbli 更好地

38、employed,emplii:使用 concernkns:n使擔(dān)心;使不安，要注意（about/for) bulky blki 體積大的,龐大的;過(guò)大； sufficientlysfintli足夠地,充分地,Unit One Mold Constructions,At the conclusion of injection the mold first parted at 1 in the sprue separating area when the machine opens.,模具結(jié)構(gòu),The complete mold block， with the exception of the

39、fixed mold half， is interlocked within itself by the latch 2.,一個(gè)完整的動(dòng)模部分，由其余的固定板通過(guò)插銷(xiāo)2使它們連接在一起，,當(dāng)注射成型結(jié)束時(shí)，隨著機(jī)器的打開(kāi)，模具將首先在澆道分離面1處分型。 句中短語(yǔ)“At the conclusion of”譯為“當(dāng)完結(jié)時(shí)”。,conclusion knklu:n 終結(jié),結(jié)束 Exception iksepn 例外;,Unit One Mold Constructions,As the sprue 3 is held captive by the in the retainer pin 4， the part is severed from the sprue， which stays on the fixed half. When the head of the bolt 5 catches the sprue -stripping plate 6， this is moved forward， ther