Optimum Design For Double Hot-Runner Injection Mold Based On CAE

Mold industry has an important status in national economy. The improvement of the mold technology can influence the research and development of new technology. The technology not only related to mechanic products but automotive industry, household appliances, Electronic Industries and chemical industry.When we need to produce plastics molding which is large, flat, thin-walled and shallow type cavity or frame molding, the traditional single-layer injection mold needs large clamping force and large injection. Mold opening stroke and die thickness is very small. The shot weight of the machine is often less than 1/4 to 1/3 the rated capacity. The production capacity of the machine is failed to fully used. Not only the production efficiency is not high, but also a waste of working hours and hydroelectricity. Stack hot-runner injection mold technology is one new developed technology, it substantially increases the production effciency, improves products'quality and other significant advantages. The use of CAE technology to simulate the double-hot runner is a new technology. Currently, CAE simulation just stay in the single-layer common mold or two-layer cold runner mold, it is a technology gap in the double-hot runner. Therefore, the use of CAE technology on double-hot runner has an important research significance.The main works are as follows:1. Apply the theoretical knowledge relevant to stack hot runner injection mold, Study the structure of double-hot runner injection mold features and theoretical calculation, and design a new double-hot runner injection mold. 2. Access to relevant information at home and abroad, Use Pro/E software for three-dimensional modeling design, and check whether there is interference when opening and closing mold. And completedly design double-hot runner injection mold.3. Injection Mold CAE technology and function have been introduced and detailed. And apply the injection mold analysis software(Moldflow) to optimize the gate locations and quantities. Ultimately determine the best gate locations and quantities.4. Use Moldflow simulation method to optimize the gating system, cooling system and molding process parameters, and computer-aided simulation analysis of the mold (ie, CAE analysis).