The seminar on "Energy Saving Technology of Plastic Processing Machinery" hosted by Hong Kong Plastic Machinery Association was held last Friday (January 11) at the Productivity Building in Nanshan Science and Technology Park, Shenzhen. Tang Yongjian, general manager of Daming Technology Co., Ltd., explained in detail the injection molding. The principle and method of energy saving of machine and barrel are compared, and the energy saving industry standard of Chinese injection molding machine and the European standard Euromap60 are compared.

      Tang Yongjian pointed out that the energy-saving methods of injection molding machines are not limited to the familiar servo system transformation and electromagnetic heating technology. Large diameter, short flow, fewer elbows, small corners, etc. can improve the transmission efficiency, thereby achieving energy saving. In addition, in addition to "hardware" adjustment, energy saving can be achieved even through parameter adjustment. For example, if the lowest stroke is used, the ejection force should not be exhausted, and the adjustment stroke should not be pushed to the bottom. He also gave detailed suggestions on how to choose the power system of the injection molding machine—the most energy-consuming part. For thin walls (less than 0.5mm) with a cycle of less than 5 seconds, it is recommended to use an asynchronous motor to drive a quantitative pump; a cycle of 5-8 seconds is recommended Use asynchronous motor to drive the variable pump; for thick walls with a cycle greater than 8 seconds, it is recommended to use the asynchronous motor to drive the variable pump or the servo motor to drive the oil pump.