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(2)Optimize design of plastic products
Plastic wall thickness, gate number and location of the design of flow channel system for the quality of plastic products have a significant impact. Depends on the experience of the past, designers using manual methods to achieve, time-consuming effort, but the use of CAE technology to quickly design the best products.
(2) optimize the plastic mold design
Can be cavity size, gate location and number of flow channel dimensions and cooling systems to optimize the design. On the computer simulation test mold, mold repair mold and improve quality and reduce the number of actual tryout.
(3) to optimize injection process parameters
Simulation of the injection process and found possible shape defects, to determine the best injection pressure, clamping force, mold temperature, melt temperature, injection time and cooling time.
This shows that the injection molding CAE technology in terms of improving productivity, reduce mold design and manufacture cycle and to ensure product quality, or reduce costs, reduce labor intensity and so on, have very significant technical advantages and economic significance.
3 Injection Molding CAE software types and their details
To date, a mature business are more injection molding CAE software, Moldflow Corporation Moldflow software and AC-Tech, Inc. (February 2000, was Moldflow Merger) and C-Mold software is an excellent representative; There are also foreign The TMCONCEPT, CADMold, Fidap, Stirm100, Polyflow and China's Taiwan region Moldex-peer software applications are relatively wide; and domestic in the "Eighth Five-Year" period began research in this area, and now Huazhong University of Technology HSCAE software and Zhengzhou University, Z -Mold software in China in the leading position.
Moldflow software is specialized in injection molding CAE software and consulting for Moldflow's range of products, the company issued since 1976, the world's first set of injection molding CAE software, has been a leading injection molding CAE software market. To 2004, Moldflow Injection Molding CAE software in the global market share of over 75%.
MoldFlow software includes three parts: MoldFlow Plastics Advisers (product optimization consultant, MPA), MoldFlow Plastics Insisht (injection molding simulation analysis, MPI), and MoldFlow Plastics Xpert (injection molding process control specialists, MPX).
Under normal circumstances, the most commonly used MPI, is mainly used for injection molding process simulation to get the best number and location of the gate, reasonable flow channel system and cooling system, and cavity size, gate size, runner size and cooling systems to optimize the size and the injection molding process parameters may also be optimized.
Moldflow Software Moldflow analysis techniques can be pided into three kinds, namely, Midplane, Fusion and 3D [2-3].
4 Moldflow analysis of Midplane
Midplane (in the surface flow) applications began in the 20th century, the 80s. The grid is a three-node triangular element, its principle is the 3D geometric model of simplified geometric model of the neutral surface (to be created in the model grid the middle of the wall thickness), using established simulation analysis of the neutral surface, ie to flow in plane to simulate three-dimensional solid flow. The analysis of technological development has been very mature and stable, and the advantages for the analysis of speed and high efficiency. The simulation shown in Figure 3. Based on the flow of surface flow simulation of injection molding technology, software applications, the longest, widest range. But the practice shows that, based on the surface flow simulation software in the application of technology that has significant limitations, specifically as follows:
(1) The user must construct a mid-surface model. Using manual directly from the physical model structure in the surface model is very difficult and often takes a lot of time and can not be converted from other CAD models.
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