外文翻译--精密注射成型技术的研究进展.doc

Precision injection molding technology of progress Author : Masaki Mikell Chen Chun Abstract : Introduction about precision injection molding technology of the polymer materials, and discussion about factors which impact the precision injection molding, including the precision of the mold，the control accuracy of the injection molding machine, the process control of precision injection and other computer control technology. Discussed to each of these factors, and given the relevant solutions, finally, introduce a number of advanced molding technology. Keywords : Precision Injection, Injection Machine，Precision Injection Mold In recent years, with the rapid development of the electronics, telecommunications, health care, automotive, and other industries，the demand to high-precision and high performance of plastic products is increasing day by day, prompted precision molding technology continues to progress, new technologies continue to emerge. Precision injection molding products not only require high dimensional accuracy, low warpage，good to write, but also require excellent optical properties [1]. Injection molding is the most important method of the plastic molding, including plastics plastics，injection, and packing, several basic cooling process, so there are many factors which can impact precision injection molding. 1 Precision Mold To create sophisticated products, precision mold is essential. Generally the accuracy of the Mold controlled by the mold temperature, the precision manufacturing mold and the selection of plastic shrinkage rate when mold design . 1.1 The Control Precision of The Mold Temperature General precision parts in the injection molding, temperature control of mold is to increase productivity. However，the impact of temperature control of mold for precision injection molding is great [2], it affects component of contraction, shape, crystallization, stress and so on, therefore mold design temperature loop temperature distribution at the req