1、The developme nt of plastic mouldChi nas in dustrial plastic moulds from the start to now, after more tha n half a cen tury, there has bee n great developme nt, mold levels have bee n greatly enhan ced. Mould has bee n at large can produce 48-i nch big-scree n color TV Molded Case injectio n mold, 6

2、.5 kg capacity wash ing machi ne full of plastic molds, as well as the overall car bumpers and dashboards, and other plastic mould precisi on plastic molds, the camera is capable of produci ng plastic mould , multi-cavity mold small modulus gear and mold ing mold. -Such as Tianjin and Yan tai days E

3、lectrical Co., Ltd Polaris IK Co. manu factured multi-cavity mold VCD and DVD gear, the gear product ion of such size precisi on plastic parts, coaxial, beat ing requireme nts have reached a similar foreig n the level of product, but also the applicati on of the latest gear desig n software to corre

4、ct con tract ion as a result of the moldi ng profile error to the sta ndard invo lute requireme nts. Producti on can only 0.08 mm thick ness of a two-cavity mold and the air Cup difficulty of plastic doors and windows out of high modulus, and so on. Model cavity in jecti on mold ing manu facturi ng

5、accuracy of 0.02 to 0.05 mm, surface rough ness Ra0.2 卩 m, mold quality, and sig nifica ntly in crease life expecta ncy, non-hardening steel mould life up to 10 30 million, hardening steel form up to 50 10 million times, shorten the delivery time than before, but still higher than abroad,a nd the ga

6、p betwee n a specific data table.Process, the multi-material plastic molding die, efficient multicolor injection mould, in serts excha nge structure and core pulli ng Stripp ing the inno vative desig n has also made great progress. Gas-assisted injectio n moldi ng, the use of more mature tech no log

7、ies, such as Qin gdao Hise nse Co., Ltd., Tianjin factory com muni cati ons and broadcast ing compa ni es, such as mold manu facturers succeeded in 29 34-i nch TV thick-walled shell, as well as some parts on the use of gas-assisted mould tech no logy Some manu facturers also use the C-MOLD gas-assis

8、ted software and achieved better results. Prescott, such as Shan ghai, such as the new compa ny will provide users with gas-assisted mold ing equipme nt and tech no logy. Bega n promot ing hot runner mold, and some plants use rate of more than 20 percent, the general heat-thermal hot runner, or devi

9、ce, a small number of units with the worlds advaneed level of rigorous hot runner-needle device, a small number of units with World advaneed level of rigorous n eedle-hot runner mould. However, the use of hot runner overall rate of less tha n 10%, with overseas compared to 50 80%, the gap larger. I

10、n the manu facturi ng tech no logy, CAD / CAM / CAE tech no logy on the level of ap plicatio n of a new level to the en terprise for the product ion of household applia nces represe ntatives have in troduced a considerable number of CAD / CAM systems, such as the United States EDS UO , the Un ited S

11、tates Parametric Tech no logy Pro / Engin eer, the Un ited States CV CADS5 compa ny, the British compa ny DOCT5 Deltacam, HZSs CRADE Japa n, the compa nys Cimatro n Israel, the Un ited States AC-C-Tech Mold Compa ny and Australias MPA Mold flow Mold analysis software, and so on. These systems and th

12、e in troducti on of the software, although a lot of money spe nt, but in our country die in dustry, and achiev ing a CAD / CAM in tegratio n, and to support CAE tech no logy to forming processes such as mold ing and cooli ng, such as computer simulati on, and achieved certa in The tech ni cal and ec

13、ono mic ben efits, promote and facilitate Chin as CAD / CAM tech no logy. In rece nt years, Chi nas own developme nt of the plastic mould CAD / CAM system has achieved sig nifica nt developme nt, the mai n guara ntor Software Engin eeri ng In stitute, is the developme nt of CAXA, Huazho ng Uni versi

14、ty of Scie nee HSC5.0 developme nt of the system and injectio n mold CAE software, and so on, these Die of domestic software with the specific circumsta nces in the application of computer and lower prices, and other characteristics, in order to further uni versal CAD / CAM tech no logy has created

15、good con diti ons.In rece nt years, China has bee n more exte nsive use of some new plastic mold steel, such as: P20, 3Cr2Mo, PMS, SMI , SM U , and the quality of life of mold has a direct significant impact on the overall use of the still less . Plastic Moulds standard model planes, such as standar

16、d putter and spring has given more applications, and there have bee n some of the commercializati on of domestic hot runner system comp onen ts. However, at prese nt China Die level of sta ndardizati on and commercializati on in the gen eral level of below 30 perce nt and foreig n adva need in dustr

17、ial coun tries has reached 70 perce nt compared to 80 perce nt, still a large gap. Table 1, at home and abroad plastic mould tech no logy comparis on tabje mRa0.20 卩 m non-hardened steel die life 10 to 60 million 10 30 million hardened steel die life 160 300 million of 50 100 million hot runner moul

18、d overall utilization rate of more tha n 80 per cent less tha n 10 per cent level of sta ndardizati on of 70 80% less tha n 30% of medium-sized plastic mould product ion cycle about a month 2 4 mon ths in the mold in dustry in the amount of 30 to 40% 25 to 30% Accord ing to the parties concerned for

19、ecast, the markets overall vigorous mold is a smooth upward, in the next Die market, the development of plastic mould faster than the other Die, die in the proporti on of in dustry will gradually improve. With the con ti nu ous developme nt of the plastics in dustry, put on the plastic mold grow ing

20、 dema nds is a no rmal, and so sophisticated, large-scale, complex, l on g-life plastic mould developme nt will be higher than the overall pace of development. At the same time, imports in recent years because of the mold, precision, large, complex, long-life die in the majority, therefore, reduce i

21、mports perspective, in the mold of such high-e nd market share will gradually in crease. The rapid developme nt of the con structi on in dustry so that the various Profile Extrusion Die, PVC plastic pipe fittings Die Die market become a new econo mic growth point, the rapid developme nt of highways,

22、 car tires also put a higher dema nd, radial tire Die, Die particularly active pace of developme nt will also be higher than the overall average level of the plastic and wood, plastic and metal to make plastic molds in the automotive, motorcycle in dustry in the dema nd for huge household appliances

23、 industry in the 10th Five-Year Plan period ave greater developme nt, especially refrigerators,air-c on diti oners and microwave ove ns, and other parts of the great dema nd for plastic moulds, and electr onics and com muni cati ons products, in additi on to audio-video products, such as color telev

24、isi on s, laptop computers and set-top boxes will be give n a wider n etwork development, which are Plastic Mold market is the growth point.Chin as in dustrial and tech no logical plastic mould the future direct ion of the major developme nts will in clude: 1, rais ing large, sophisticated, complex,

25、 l on g-life mold desig n and manu facturi ng sta ndards and proporti on. This is due to the mold ing plastic mould products in creas in gly large, complex and high-precisi on requireme nts, as well as requireme nts for high productivity and the developme nt of a multi-mode due. 2, in the desig n an

26、d manu facture of plastic mould fully promote the use of CAD / CAM / CAE tech nology. CAD / CAM tech no logy has developed into a relatively mature tech no logy com mon in rece nt years CAD / CAM tech no logy hardware and software prices has bee n reduced to SMEs gen erally acceptable level of popul

27、arity for further create good con diti ons; based on n etwork CAD / CAM / CAE system in tegratio n structure the in itial sig ns of emerg ing, and it will solve the traditi onal mixed CAD / CAM system can not meet the actual product ion process requireme nts of the division of collaboration; CAD / C

28、AM software will gradually improve intelligence plastic parts and the 3-D mold design and prototyping process 3-D analysis will be in our plastic mould industries play an increasingly important role. 3, promote the use of hot runner tech no logy, gas-assisted injectio n moldi ng tech no logy and hig

29、h-pressure injection moldi ng tech no logy. Using hot runner mould tech no logy can improve the productivity and quality of parts and plastic parts can be substantial sav ings of raw materials and en ergy con servati on, exte nsive applicati on of this tech no logy is a big plastic mould cha nges. H

30、ot Runner comp onents formulate n atio nal sta ndards, and actively produce cheap high-quality comp onen ts, the developme nt of hot runner mold is the key. Gas-assisted inject ion moldi ng product quality can be guaranteed under the premise of substantially lower cost. Currently in the automotive a

31、nd applia nee in dustries gradually promote the use of the Chia ng Kai-shek. Gas-assisted injection molding of the ordinary than the traditional injection of more parameters n eed to ide ntify and con trol, and its more common ly used in large, complex products, mold design and control more difficul

32、t, therefore, the development of gas-assisted moldi ng flow an alysis software It seems very importa nt. On the other hand in order to ensure precision plastic parts to continue to study the development of tech no logy and high-pressure injectio n moldi ng and injectio n-compressio n moldi ng mould

33、and die tech no logy is also very importa nt. 4, the developme nt of new plastics moldi ng tech no logy and rapid econo mic mold. To adapt to more variety, less volume of production. 5, and improve standardization of plastic mould standard parts usage. Chinas mold and die level of standard parts sta

34、ndardization still low, the gap between the large and foreig n, to a certa in exte nt con strai ning the developme nt of in dustries in our country die, die to improve quality and reduce manu facturi ng costs Die, Die sta ndard parts to vigorously promote the applicati on. To this end, first of all,

35、 to formulate a unified national standards, and in strict accordance with the standards of product ion, sec on dly it is n ecessary to gradually scale product ion, to improve the commercialization of the standard of quality, and reduce costs again it is necessary to further in crease the sta ndard s

36、pecificati ons of varieties. 6, Die applicati on quality materials and adva need surface treatme nt tech no logy for impro ving the quality of life and mold it is necessary. 7, research and application of high-speed die measurement tech no logy and reverse engin eeri ng. CMM-use 3D sca nner or rever

37、se engin eeri ng is the realizati on of plastic moulds CAD / CAM one of the key tech no logies. Research and Applicati on of diversity, adjustme nt, cheap detecti on equipme nt is to achieve the n ecessary prec on diti on for reverse engin eeri ng.塑料模具的發展中國塑料模工業自從開始到現在，已經經過了半個多世紀，有了非常偉大 的發展，模具水平有了很大

38、的提高。在大型模具方面已經能夠生產48英寸大屏幕彩電塑殼注射模具、6.5kg大容量洗衣機全套塑料模具以及汽車保險杠和整 體儀表板等塑料模具；精密塑料模具方面，已能生產照相機塑料件模具、多型腔 小模數齒輪模具及塑封模具。例如天津津榮天和機電有限公司和煙臺北極星 I.K模具有限公司制造的多腔 VCDffi DVD齒輪模具，所生產的這類齒輪塑件的尺 寸精度、同軸度、跳動等要求都與國外同類產品的水平差不多了，而且還采用 了最新的齒輪設計軟件，糾正了由于成型收縮所造成的齒形誤差，達到了標準 漸開線齒形要求。還能夠生產厚度僅僅為0.08m m的一模兩腔的航空杯模具和難度較高的塑料門窗擠出模等等。注塑模型腔

39、制造精度可達0.020.05mm表面粗糙度Ra0.2卩m模具質量、壽命明顯提高了，非淬火鋼模壽命可達1030萬 次，淬火鋼模達501000萬次，交貨期比較以前來講縮短了，但和國外相比較 而言仍然有較大的差距，具體的數據請見數據表。在成型工藝方面，多材質塑料成型模具、高效多色注射模具、鑲件互換結 構和抽芯脫模機構的創新和設計方面也取得了較大的進展。氣體輔助注射成型 技術的使用也更加趨向于成熟，例如青島海信模具有限公司、天津通信廣播公 司模具廠等等廠家成功地在2934英寸電視機外殼以及一些厚壁零件的模具上 運用了氣輔技術，一些廠家還使用了 C-MOLD氣輔軟件，取得了很好的效果。例 如上海新普雷斯

40、等公司就能為用戶提供氣輔成型設備及技術。熱流道模具開始 推廣，有的廠采用率達20%上，一般采用內熱式或者外熱式熱流道裝置，少 數單位采用具有世界先進水平的高難度針閥式熱流道裝置，少數單位采用具有 世界先進水平的高難度針閥式熱流道模具。但在總體上熱流道的采用率還達不 到10% 與國外的5080%f比，差距較大。在制造技術方面，CAD/CAM/CA技術的應用水平上了一個新臺階，以生產家用電器的企業單位作為代表，陸陸續 續引進了相當多數量的CAD/CAM系統，例如美國EDS公司引進的UGU、美國 Parametric Tech no logy 公司引進的 Pro/Emg in eer、美國 CV公司

41、引進的 CADS5 英國Deltacam公司引進的DOCT5日本HZS公司引進的CRADE以色列公司引進 的Cimatron、美國AC-Tech公司引進的C-Mold以及澳大利亞 Moldflow公司引 進的MPA塑模分析軟件等等。這些系統和軟件的引進，雖然花費了大量資金， 但在我國模具行業中，實現了 CAD/CA的集成，并能支持CAES術對成型過程， 如充模和冷卻等進行計算機模擬，取得了一定的技術經濟效益，促進并且推動 了我國模具CAD/CAMfe術的發展。近些年來，中國自主開發研制的塑料模 CAD/CAM統有了很大程度的發展，主要的有北航華正軟件工程研究所開發的 CAXA統、華中理工大學開

42、發的注塑模 HSC5.0系統以及CAE軟件等，這些軟件 具有適應國內模具的具體情況、能在微機上應用且價格較低等特點，為進一步 普及模具CAD/CAMfe術創造了良好的條件。近些年來，中國國內已經較為廣泛地采用一些新的塑料模具鋼，如:P20、3Cr2Mo PMS SMI、SMI等，對模具的質量和使用壽命有著直接并且重大的影 響，但是總體來說使用量仍然比較少。塑料模具標準模架、標準推桿和彈簧等 越來越廣泛地得到應用，并且出現了一些國產的商品化的熱流道系統元件。但 目前我國模具標準化程度和商品化程度一般在30%以下，和國外先進工業國家已達到的70%-80嘲比之下，仍然有很大的差距。表一，國內外塑料模具技術比較表，項目國外國內注塑模型腔精度 0.0050.01mm 0.020.05mm型腔表面 粗糙度Ra0.010.05卩m Ra0.20卩m 非淬火鋼模具壽命 1060萬次，1030 萬次淬火鋼模具壽命，160300萬次，50100萬次，熱流道模具使用率80% 以上總體不足10淋準化程度7080%、于30%型塑料模生產周期一個月左右 24個月在模具行業中的占有量 3040% 2530%g有關方面預測，模具市場的總體趨熱仍然是平穩向上的，在未來的模具市場之中，塑料模具的發展速度 將遠遠高于其它種類的模具，在模具行業之中的比例將逐步提高。隨著塑料工 業的不斷發展，對塑料模具提出越來越高