最新塑料模具专业英语精品课件.ppt

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1、 Therefore the decision concerning the number 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 因此确定型腔数量的主要因素涉及以下几点: 订单大小（制品数量及相关交货时间）; 制品形状（尺寸、质量要求）;

2、 Therefore f: 因此;因而;所以Concerning kns:ni 关于，因素 Cavities kviti 型控 母模 Order订购;订货，汇票,汇单 Delivery dilivri 交付,交货 Shape eip 形状;样子,外形 injection -molding machine（ clamping force， plasticizing and injection capacity）; mold costs. There are several known procedures for calculating the economical number of cavi

3、ties. Unfortunately they are so varied that it is impossible to condense them. Unit One Mold Constructions clamping force klmp 夹紧力，合模力Capacity kpsiti容量,容积 Procedures prsi:d程序;方法;步骤 Unfortunately遗憾地;不幸地 Condense kndens压缩;浓缩 ；使简洁,缩短 注射机（合模力、可塑性、注射容量）;模具费用。 尽管已有多种计算经济型腔数目的方法，但这些计算方法多种多样，根本没法将它们提炼成为简便公式

4、。 As an example: The theoretical max. 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 cavit

5、ies attainable. Unit One Mold Constructions plasticize pl stisaiz v.（使）成为可塑（使）成为可塑;（使）可塑（使）可塑injection capacity注射容量注射容量Theoretical iretikl理论的理论的 Sprue spru:注料口注料口;浇注口浇注口 例如: 型腔的理论最大数目为 ： F1=注射机注射容量的最大值（cm3） /制件、注料口和流道体积（cm3） F2=注塑容量（cm3/min） /制造数量/min（制件、注料口和流道（cm3） F2必须小于等于F1 ，F1是可得到的型腔数目的最大值。 Unit

6、 One Mold Constructions 动模座板动模座板 顶料板顶料板（Ejector plate）顶料杆，出料杆顶料杆，出料杆注塑机顶杆注塑机顶杆导柱导柱/导套导套垫脚，模脚垫脚，模脚凸模板凸模板凹模板凹模板冷却水道冷却水道定位环定位环 主流道主流道主流道衬套主流道衬套 浇注系统浇注系统静模座板静模座板导柱导柱 导套导套 动模垫板动模垫板Unit Three Mold Constructions Passage Two Three -plate Injection Molds2 2 Three -plate injection molds are injection molds po

7、ssessing two parting lines， having been designed as degating molds. This means that the sprue is separated from the 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. 三板式注射模具三板

8、式注射模具是是具有具有两个分型面的两个分型面的注射模具注射模具 ，这种模具带有，这种模具带有浇口浇口 也就是也就是直浇道直浇道在模型中和塑件相分离。在注射结束之后，模具沿第一层在模型中和塑件相分离。在注射结束之后，模具沿第一层分型面开模，其中包含了分型面开模，其中包含了注料口注料口、浇道浇道和塑件中分流的和塑件中分流的针孔型浇口针孔型浇口。 possessingpzes拥有,持有;具有;占有； Means意味着； sprue ；spru:直浇道； is separated 被分离；conclusionknklu:n结尾,结局 Unit One Mold Constructions 模具结构模具

9、结构Only when the second parting line opened， the part would be released. There are several possibilities for achieving this.仅当沿第二层分型面开模时，仅当沿第二层分型面开模时，塑件塑件才脱离型芯。有多种才脱离型芯。有多种可能性可能性来来实现实现这种情况。这种情况。 would be released rili:s 放松,松开possibility ,psbiliti 可能性 Achieving ti:v 完成,实现 Unit One Mold Constructions 模

10、具结构模具结构 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. 在图3 -1中，模板2具有一个短小的行程距离，压缩弹簧4或弹簧垫圈可以插入模板1 和模板2之间，推动模板2向前，而止动销3则可以限制模板2的行程。 Fig.3 -1 Spring type 1p

11、late;2push plate;3stop; 4compression spring Fig. figure fig的缩写 图表;图解;插图 stroke struk 冲程,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 which the ball catch 4 is pushed. A not too heavy plate can be

12、 carried along by the resultant adhesive effect. 模具结构模具结构 Fig.3-2 Retention system 1plate;2dowel;3annular groove;4ball catch在图3 -2中，模板1在滞留系统中也经常被使用。定位销2中有一个环形凹槽3可以使球掣4进入，一块不太厚的模板可以沿着黏合面而移动。 retention system ritenn保留;保持 Is employed impli使用,利用； Dowel daul 定位销 nnular njul 环状的,轮状的;有环纹的 groove gru:v 沟;槽

13、Resultant rizltnt组合的,合成的 Adhesive dhi:siv粘的;粘着的; 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 strong spring 3. Plate 2 is carried along until the ejector

14、plates are stopped by running against the ejector bar of the machine. 图3-3中的模板2通过顶料杆和顶料板相连。顶料杆由强度很大的弹簧3依次固定在它们的基本位置。模板2被移动直到顶料板由于撞上机器的推出杆而停止。 Fig.3-3 Three-plate injection mold 1plate1;2plate2;3spring; 4ejector rod;5ejector bar is connected to通过.被连接be moved in被搬入in turn依次，轮流is carried along被移动 ；runn

15、ing against撞上Unit Three Mold Constructions 当一个完整的模型保持正常方式运行时，需注意推出杆5应设计得稍长点。 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 推出杆delayed.1.延缓;使延期 2.耽搁;延误 Unit One Mold Constructions They

16、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模具结构模具结构Moreover， when the ejector rods 4 are hardened and guided in bushes， these ejector rods

17、 can take over the function of the guide pins fitted on the fixed mold half，顶料杆不能和顶料板刚性相连，否则塑件将会有被推回模板2型腔的可能。对于这种设计，模板2的行程可以是任意的。 而且当顶料杆4被加固并且用轴套引导时，这些顶料杆可替代导向销的作用来与定模部分配合， Rigidly rididli 僵硬地;严厉地;严格地;固执地 Otherwise waiz 否则 tendency tendnsi倾向;趋势 Arbitrary :bi,trri 随心所欲的,任意的Unit One Mold Constructions

18、 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. 模具结构模具结构所以在模板1和模板2之间不能乱放伸出杆或弹簧。如果要设计一个非常复杂的浇道系统，这种方法具有优势。 Clutter klt 使凌乱;乱堆在,塞满(+up)Protruding prtru:d vt伸出,突出 Springs 弹

19、簧Rather r: 相当,颇,有点儿 Complicated kmplikeitid 复杂的Unit One Mold Constructions 模具结构模具结构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 moved. The latch 3， which hooks over plate 1， moves the la

20、tter along. 图3-4所示为平板运动的机械形式。虽然这种形式更为精细，但这无疑是最安全的方法，特别是当大而重的平板需要被移动时。挂在模板1上的插销3沿着模板移动， Fig.3-4 Plate movement 1plate;2pin;3latch;4guide strip;5leaf spring;6waterway elaborate ilbrit 精细,精心制作的nevertheless ,nevles 仍然,不过,然而 hook huk 钩住 图3-4 模板运动 1模板; 2销;3插销; 4导轨; 5片弹簧;6冷却水道 Unit One Mold Constructions 模

21、具结构模具结构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 in this case has been fitted to the underside of the guide

22、 strip at 6， and the mold can continue opening.直到销被滑块抬起，销不得不向上移动，所以释放了模板1上的挂钩。这时模板反向止动销向上推，在这种情况下，止动销止动销已在6处与导轨的下侧相配合，所以模具能一直打开。 escape iskeip 逃跑;逃脱 thereby 因此,由此,从而 guide strip strip支板 ; 导轨Unit One Mold Constructions The hook is pushed down again by the leaf spring 5. 模具结构模具结构Fig.3 -5 illustrates a

23、 typical degating tool. Contrary to the usual mold design， this tool has an additional mold parting line for the star -shaped runner. 然后，挂钩再一次被片弹簧5向下拉。 图3-5所示为一典型注塑模具。与通常的模具设计不同，在此模具中为星形流道设计了一个附加的模具分型线。 illustrates ilstreit (用图,实例等)说明,阐明(+with)Contrary kntrri 相反的,对立的(+to) additional dinl添加的;附加的;额外的

24、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;14plate assembly;15mold cores 图图3-5 典型注塑模具典型注塑模具 1浇道分离面; 2、10插

25、销;3直浇道; 4固定销;5、10插销头; 6注料口分模板;7销; 8导轨;9冷却水道; 11主要分型线;12卸料杆; 13分型（模）套;14模板装置; 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 .模具结构模具结构But there is some concern that bulky runner often do not drop easily bet

26、ween the mold parting lines. It is important that a sufficiently large gap always be set. 因为有简单的脉冲选通技术，所以用这种方法设计的模具更适于使用。 但是需要注意的是，通常大浇道不易滴在分型线之间，所以大的间隙设计是非常重要的。 Constructed knstrkt 建造,构成，设计； principleprinspl原则;原理 preferablyprefrbli 更好地 employed,emplii:使用concernkns:n使担心;使不安，要注意（about/for)bulky blki

27、体积大的,庞大的;过大； sufficientlysfintli足够地,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.模具结构模具结构The complete mold block， with the exception of the fixed mold half， is interlocked within itself by the latch 2.一个

28、完整的动模部分，由其余的固定板通过插销2使它们连接在一起， 当注射成型结束时，随着机器的打开，模具将首先在浇道分离面1处分型。 句中短语“At the conclusion of”译为“当完结时”。conclusion knklu:n 终结,结束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.

29、When the head of the bolt 5 catches the sprue -stripping plate 6， this is moved forward， thereby stripping the sprue from the retaining pin 4. 模具结构模具结构直浇道3被固定销4中的下陷所约束。塑件从直浇道被切断，直浇道继续停留在静模部分。当插销头5的销头到达注料口分模板6时，这次运动停止，从而直浇道从止动销4中脱模。 Unit One Mold Constructions 模具结构模具结构当一连串运作完成时，插销2中的销7在位置9处沿着导轨8到达倾斜面

30、，强制抬起插销从而结束互锁。 When the sequence has been completed， the pin 7 of latch 2 has arrived at the inclined plane of the guide strip 8 in position 9， forcibly lifting the latch and thereby ending the interlock.Sequence si:kwns连续; 一连串 inclined inklaind倾斜的 interlock. ,intlk互锁 Unit One Mold Constructions The

31、 head of bolt 10 reached the plates along the fixed position. The continuing sequence of the opening movement consists of tile mold opening at the main parting line 11， thereby creating the drop -out opening for the ejected part.模具结构模具结构插销10的销头沿着固定方向到达模板。继续进行的开模运动由塑料模型在主要分型面11处的开模组成，从而为塑件创造了脱落条件。 Se

32、quence si:kwns连续动作; 一连串动作consists of knsist组成,构成Unit One Mold Constructions As the opening sequence continues， the head of ejector rod 12 pushes against the ejector of the molding machine and stops the plate assembly 14 as well as the stripper sleeve 13.模具结构模具结构The mold core 15 fitted into the plate assembly 14 with draws from the part， and the ejection process is concluded.当开模动作继续进行时，顶料杆12 的杆头推动模具的推出机构，使动模座板14和分型套13停止。 装在凹模固定板14中的型芯15 从塑件中退出，从而注射过程结束。 as well as还有”、“不但而且 Unit One Mold Constructions 谢谢观看！谢谢观看！模具结构模具结构32 结束语结束语