At present, in the design of plastic Injection mold, the main application technology is CAD/CAE technology. CAD/CAE technology mainly includes conceptual design, finite element analysis, optimization design, computer simulation, drawing and auxiliary design process management. The general structure of the product is designed by CAD technology. After designing the general structure, the designer uses CAE technology to analyze and evaluate the structure. With the help of die CAD/CAE integration technology, the workpiece does not need prototype testing. Through geometric modeling technology, the parts can be accurately and vividly displayed on the computer. When mechanical testing is required, finite element analysis techniques can be used. In addition, the computer can also help designers to carry out rapid analysis, automatic drawing and automatic retrieval, which can not only reduce the work pressure of designers, but also let them put more energy on the difficulties and key points of mold design. Before the formal use of the mold, the CAD software can correctly predict the parameters of the mold. For example, when examining the flow of melt in the mold cavity, flow simulation software can be used to improve the design of the casting system, so as to improve the success rate of the mold. When it is necessary to investigate the solidification of melt and the change of mold temperature, pressure retention and cooling analysis software can be used to improve the cooling system through the analysis results of the software. In addition, in order to understand the warping and deformation of the plastic mold in advance, stress analysis software can be applied. With the progress of technology, the current conceptual design is not only the design of appearance and structure, it has been extended to the field of mold structure analysis. When the plastic mold is designed by CAD technology, the stiffness, strength, drop test simulation and heat dissipation ability can be analyzed by CAE software. Through these analyses, the rationality of the previous conceptual structure can be tested. When found unreasonable, CAD software can be used to modify.
The designer will input the customer's computer data into the computer, and with the help of computer aided system and CAD/CAE technology, the simulation experiment can be carried out. In this process, the system can carry out graphics processing. Especially for those drawings containing 3D surfaces, the system can be further corrected and edited. For example, the combination of surfaces, cross section rounded corners and the fusion of surfaces. The designed parts can be physically displayed with the help of a computer system. In this way, the designer can intuitively observe the correctness of his design. The designer can also use the system function to simulate the strength, plastic flow state and mold temperature. Once the error in the design is found, it can be modified in time, which greatly reduces the design cost of plastic molds.
