外文翻译--新一代注塑技术.docx

中文2460字外文资料翻译The Fresh Generation Injection Mould Technique1、Summary The indexing vase embryo mould plastics technique is designed the development at twin teeterboard machinerys of Huskys mould plastics system .Ought to systematically there be an all sides to stir the teeterboard to coil the cross axle to circle.Each one section is matched somebody with somebody a type semi to cool to mold the standard .The master stamper systematically is 48 an overcast standard , thereby supplys 192 standard rushs pith .Fiing teeterboard jacket possess criterion heat flux a road and semi an overcast standard .Standardized two steps of moulds plastics units are equipd to this system , and that unit possessone 120 millimeters to pack the engine molding and 120 millimeters to inject the pressure stuff to squeeze in , and injecting along the Great Wall the pressure stuff possess engine a thick tube-shaped head and a distribution valve to join two grades .Designing in the way of the vase embryo at the moment , target weight is the 47.3 grams vase embryos , thereby injecting amount is 2270 grams .Two 42 differences is gatherd being used a system to the benzol two methanoic acid glycol ester studs , and every one wholly acquireed the effect that may be receiveed . When the machinery cycles , the plastic material first of all injects up A .Since the fact that the vase embryo will remain the standard rush pith on , the vase embryo is living to turn on guarantors pressure time the standard not necessaries , and that traditional system goes up such as being living is stiff in that way .Hence , the machinery cycle that the overwhelming majority cooling may be living soon afterwards perioc through shuts the standard revolves up to become cool on the rush pith at the standard .Afterwards the cycle needs an extraordinary brief cooling perioc in order to permit the pattern to elucidate the pressure , injects and defends and to be getting near also is such in this way .Afterwards the plastic material are living Bs surface is injected on this peak ministry face that the teeterboard was reachd in the indexing on one section when turning on the standard .As D before arrival when the extremity , now A is living teeterboard base place , and the push rod is switched on here , and the vase embryo is unloaded the finished piece through the machinery and leads to on the conveying utensil .Injecting the stroke adjust the cycle time not effect , as a result may complete more slowly .Gravitational force help is guarranteed that the finished piece breaks away from that the pattern drops secondly .The finished piece drops such the curtain squares formed by crossed lines tip conveying utensil on , and the probability that creates the surperficial gall is littleer . A ministry is living 、Gas dashing systematic twin vase embryo of forming supplys the face and becomes cool the place of back and base .Since the fact that the vase embryo maintains the pattern standard rush pith on , the face obtains the conduction cooling included they are still convenient .Says in the total , the entire temperature of vase embryo than it is living traditional compression molding system and cooling leads to in the plank to stay analogous time will cool . 2、The Bottle Function Significant respect that we analyse the indexing system analogous a of jar of vase that the embryo was manufacture out that to be the performance takeing this kind of vase that the vase embryo that the system was gived birth to was manufacture out against traditional work gived birth to on the cell one another contrasts .The comparand that obtaines in the eperiment that the table 1 is give out through is underway is depenied on . The indexing vase embryo performance is living and is better always in the intensity quiz , and this is better distributing for the runner quality which improved permits the stuff to be living inner place the vase , and does not there is the indication to m with guarantor . make known that use this kind of system is living whatever space crystallinity of vase and ascendes .The indexing specimen gived birth to is probably equally light , for their weight distributions is to be much inseparable 3、This kind of system distinguishing feature Inner place the standard that to support with the hand the obviousest advantage of earthen brick is needs the cooling time decreased , thereby decreased entire time length that cycles .At the moment , this kind of system employ the largesttest breastwork thickly act as 4 millimeters the 47.3 grams vase embryos do .This kind of vase embryo process cycle time ascertains by measuring to 22.5 seconds , was optimum as to the overcast standard system .Overcast standard system implementation 14.2 seconds of indexing 48 cycle be able to be acquireed the better trade quality killing .The picture 2 is give out the cycle subdivided comparing situation . Circling the control tower does not need the manipulator again .Like this , therefore decreased from the tradition system to go up the jam that the manipulator block created is giveed an alarm and the service ceases engine time .The finished piece peak has ariseed to be living not to be the inflexible cycle time the element .Decreased in the standard the turning on gap that needs in the wake of removing the manipulator , in the wake of decreasing of pattern stroke still lift empties cycle velocity . Systematic another advantage is the floor area that needs decreases , along with thanks to does not there is manipulator and lead-out plank cooling system , latent capacity that the dependability of system may be liftd .Calculate in advance entire systematic dependability that therefore the manipulator obstructs does not happen permit the systematic usability to lift 30% .Merely traditional 48 55% of overcast areas that the standard system requires of indexing system floor area .Against the person who one another accompanies the yield that still possess per foot of floor area lifts further . Employ the indexing systematically to cause an a jar of embryo runner quality obtain the modification .Being living , the valve runner district is freezed afterwards , the vase embryo is living brieflyer time inner place the heatpoint contact against the valve staff , for the cooling that the vase embryo is living inner place the overcast standard time by enormously decreases .Geing rid of this heat source removes a crystal source .Except for better vision effect , still causes that the runner district is more sturdy , thereby causes entire a of jar of side wall district better , and possess the weight that even more opportunitys ease the vase embryo in base district . The vase embryo to remain at the standard rush pith elderer time .Systematically being contrastd against a criterion a jar of embryo mould plastics , entire a of jar of embryo becomes cool obtainning the modification .Being living , tradition manipulator becomes cool inner place the plank , and the finished piece is encounter and be able to be shrinked by the tube face becoming cool , and such heat transfer is imconsummate .In being living the indexing system manufactures at the standard shrinking on the rush pith , thereby maintain heat transfer , and is living when being come out , and will let drop when comprehensive entirety temperature of indexing vase embryo contrasts the a jar of embryo lead-out place through traditional system brings out by the peak .Still possesing , and designs as to the vase embryo at the moment , not to the throat standard ring district supply cooling water , being living , the peak when comeing out yet systematically will be cooled far more than the criterion .Become cool that district threshold energy system cycling as to the forming system of type . The distinct stuffs of indexing system in the way of some kinds reaches the difference of two kinds of distinct stuffs testing with two kinds to gather designing to the benzol two methanoic acid glycol ester studs , and may catch sight of that the acetaldehyde ( AA ) amount lets drop always .against injecting amount is contrastd this cycle time adjust injects the unit proposes the very much tall demand , injects the unit constinuously scousrs not to there is a few is held up time the stud . Since the overcast standard of peak value inner place the pattern tallys with against the two differences studs , and against the difference process installation unanimously , the acetaldehyde is measured ever to possess to let drop that the main reason rests with that the pattern gathers materials the tube more .Second advantage may catch sight of in the way of the pattern at the moment is possesing the very much good weight distributions , thereby permits to be living at the moment finished piece standard allows bad inside entire finished piece weight to drop the thest least degree . 4 、The injection mould design process requirementanalysis An injection mould design is composed of two steps: theinitial design and the detailed design. The initial design iscomposed of decisions made at the early stage of themould design, such as the type of mould configuration,the number of cavities, the type of runner, the type of gate and the type of mould base. The detailed design iscomposed of the insert (core/cavity) design, the ejectionsystem design, the cooling and venting component design,the assembly analysis and the final drafting. To develop a good CAIMDS, an analysis of whatthey have and what they want needs to be performed.What they have. The customers requirements for the product. Thisincludes the detailed geometry anddimension requirementsof the product. An existing mould design library. This library coversthe standard or previously designedcomponents andassemblies of the mould design, for example, themould base (the fixed half and the moving half) andthe pocket (the fixed half and the moving half). An expert knowledge in injection mould design. Expertknowledge of both initial and detailed designs forthe injection mould is obtained mainly from experiencedmould designers. Such knowledge includesmaterial selection, shrinkage suggestion, cavity layoutsuggestion and others. What they want: An intelligent and interactive mould design environment.Mould design is often composed of a series ofdesign procedures. These procedures usually requirecertain mould parts to be created and existing mouldparts to be assembled. Such a mould design environmentneed not be fully automatic, especially forcomplicated products with many undercuts. Anintelligent and interactive environment will be a goodchoice to integrate some useful automation algorithms,heuristic knowledge and on-lineinteraction by the experienced mould designer. Standard/previous designed components/assemblies(product-independent parts) management. Apart from the core and cavity, an injection mould hasmany other parts that are similar in structure and geometrical shape that can be used in other injectionmould designs. These parts are independent of the plastic mould products. They are standardcomponents that can be reused in different mould designs and mould sets. Useful tools (including solid design and analysiscalculation) in the core and the cavity (productdependentparts) design. Geometrical shapes and thesizes of the core and cavity system are determineddirectly by the mould product. All components insuch a system are product dependent. Also, theseparts are the critical components in the mould design Their geometrical requirements may be complicated.Thus, some tools developed to design the core and thecavity based on partial automation and partialinteraction can be quite useful. Design for assembly. In conventional CAD/CAMsystems, moulds are represented and stored as a complete geometric and topological solid model. Thismodel is composed of faces, edges and vertices in athree dimensional (3D) Euclidean space. Such a representationis suitable for visual display and performinggeometrically computation-intensive taskssuch as engineering analysis and simulation. However,this form is not appropriate for tasks thatrequire decision-making based on high-level informationabout product geometric entities and theirrelationships. Mould designers prefer a design forassembly environment instead of a simple solid modelenvironment. This idea is also presented in Ye et al.s work 24. A design for manufacture. A complete injectionmould design development cycle can be composed ofthe mould design and mould manufacturing process.To integrate CAD/CAM into the mould design, themanufacturing features on the mould should be abstracteand analysed for the specific NC machine. Both the process plan and the NC code should beautomatically generated to enable the final designed mould to be manufactured. A design for engineering drawings. For manycompanies, the injection mould design has to be represented in the form of engineering drawingswith detailed dimensions. CAD/CAM tools that are able to automatically generate these engineeringdrawings from the final injection mould design will be useful.Based on the above analysis, our research focus is todevelop techniques to represent what they have andwhat they want.Representing what they want is actually the representationof the knowledge and injection mould object.Developing what they want means to integrate moment finished piece standard the representation with intelligent and interactive tools forthe injection mould design into a completed designenvironment. Therefore, an IKB-MOULD is proposedfor mould designers to realise the above two requirements 新一代注塑技术1、概述 转位瓶胚注塑技术是在Husky 注塑系统双压板机器设计发展起来的。该系统有一个四面动压板绕横轴旋转。每一面配一个典型的半冷塑模。原模系统是一个48 阴模,从而提供192 个模芯。定压板上装有一个标准的热流道和半阴模。 本系统配备一个标准两级注塑装置,该装置有一个120 毫米挤塑机和120 毫米注射压料塞,注射压料塞上有一个机筒头和分配阀连接两级。用目前的瓶胚设计,目标重量是47.3 克瓶胚,从而注射量为2270 克。两42 个不同的聚对苯二甲酸乙二醇酯螺杆用于本系统,每个都取得了可以接受的效果。 当机器循环时,塑料首先注射到A 面。由于瓶胚要留在模芯上,瓶胚在开模不需要象在传统系统上那么硬。因此,循环的绝大部分冷却可以在随后的机器循环期间从闭模转到在模芯上冷却。然后循环需要一个非常短的冷却期间以允许模具释压,注射和保压也是如此。当开模时,这一面转位到压板的顶部表面,然后塑料在B 面注射。当D 面到达前端时,此时A 面在压板的底部位置,顶杆在这里被启动,瓶胚被从机器卸到制件引出传送器上。注射行程对循环时间没有影响,因而可以较慢地完成。重力帮助确保制件脱离模具落下。制件落在其帘格端头的传送器上,造成表面擦伤的可能性较小。 在顶部、背部和底部位置,气冲成型系统对瓶胚提供表面冷却。由于瓶胚保持在模具的模芯上,它们还容易在内表面得到传导冷却。总体上讲,瓶胚的整体温度比它在传统模塑系统和冷却引出板中呆类似的时间要冷。 2、瓶性能 我们分析转位系统的一个重要方面是拿这种系统生产的瓶胚制造出来的瓶的性能与传统工作单元上生产的类似瓶胚制造出来的瓶相比较。表1 给出从进行的试验中得出的比较数据。 转位瓶胚的性能在强度测试中一直较好,这是因为改进的浇口质量允许材料在瓶内较好地分布,没有迹象表明使用这种系统在瓶的任何地方结晶度升高。生产的转位样品可能平均较轻,因为它们的重量分布要紧密得多。 3、系统的特点 这种托坯最明显的好处是需要的模内冷却时间减少了,从而减少了整个循环的时间长度。目前,这种系统用最大壁厚为4 毫米的47.3 克瓶胚工作。这种瓶胚加工循环时间测定为22.5 秒,对于一个阴模系统来说是最佳的了。转位48