CAE Analysis of the Big-Size Injection Mold of Rear Bumper

2009 ◽  
Vol 87-88 ◽  
pp. 375-380
Author(s):  
Qing Zhen Yin ◽  
Rui Kun Song ◽  
Xiao Zhang ◽  
Bin Qi

The MPI/Cool analysis module is used to simulate and analyze the cooling system of the car’s bumper. After improvement, a comparably reasonable cooling system is designed. The situation of curling and warping of the formed bumper parts is simulated and analyzed through the MPI/Warp analysis module, the cause of the excessive warpage in the formed parts is found out and relative solutions are put forward. The forming technology of injection mold is optimized and the problem of excessive warpage is resolved.

2014 ◽  
Vol 989-994 ◽  
pp. 3127-3131
Author(s):  
Guo Dong Liang ◽  
Jun Hui Liu

The design of injection die on the upper cover of clamshell phone is introduced. The dual-plate die has side gate for opposite glue injection, the parts are ejected by ejector pin, the side reversed buckle contains three blocks, the reversed buckle at flip shaft consists of two inner sliders, and all the eight inner reversed buckles are made up of inclined pushing rods, and the cooling system embraces "U" shaped cooling waterway. Its application in practice has proved the reasonable die structure, smooth remolding, and qualified plastic part design.


2014 ◽  
Vol 1063 ◽  
pp. 219-222 ◽  
Author(s):  
Han Dong ◽  
Cun Yu Wang ◽  
Ying Chen ◽  
Wen Quan Cao

The advantages and disadvantages of the conventional hot stamping steel and the hot tamping technology were shortly reviewed. It was proposed that new type steel with relative low austenization temperature and air hardening ability should be designed and produced to overcome the surface oxidation and avoid the complexity of cooling system of the stamping dies. In this study, it was shown that the 3rd generation sheet steel with medium-Mn composition could be austenized and pressed at 700-750°C and air cooled into automobile parts with strength no less than 1.5GPa and ductility larger than 12%. This new steel and corresponding forming technology were called warm stamping technology, which overcomes the disadvantages of the conventional hot stamping steel. The fabrication trials of the automobile parts in the automobile industries were demonstrated with high strength and relative good ductility. It was concluded that the 3rd generation sheet steel and the warm stamping technology could be applied to replace the conventional hot stamping steel and conventional hot stamping technology in near future.


Author(s):  
Chuanyang Wang ◽  
Shuai Hu ◽  
Qiubo Qian ◽  
Xuanxuan Shen

The 3D models of gating system, ejection mechanisms and cooling system of the swtich shell for injection mold are designed by using Pro/ENGINEER software. MOLDFLOW is utilized for CAE analysis. Three schemes are obtained by changing the gate location during the injection molding process. After comparing the volume shrinkage during injection, shrink marks index, filling time and the injection pressure, the best scheme is obtained. According to the optimal scheme, the injection mold is designed. The results showed that simulation analysis method can not only improve the successful probability of mold trial, but also shorten the production development cycle of developing product.


2012 ◽  
Vol 152-154 ◽  
pp. 531-535 ◽  
Author(s):  
Yu Guang Wang ◽  
Qi Han Sun ◽  
Guo He Li ◽  
Yu Jun Cai

This paper has done CAE analysis of hot stamping, and optimized the water-cooled system which takes the degree of uniform temperature of blank as the objective function of optimization. The aim is to find a method of optimizing hot stamping mold cooling system based on ANSYS Parametric Design Language (APDL) with ANSYS Mechanical/LS-DYNA software and lay the foundation for designing hot stamping mold. And the work mainly consists of three sections, building parametric finite element model, simulating the process of quenching and optimizing the location parameters and radiuses of each coolant duct. Finally, contrast the optimal result with the initial result and get the conclusion, and moreover, point out the future work.


Author(s):  
Xiaohong Ge ◽  
Shaolan Wu ◽  
Hui Li ◽  
Hongwu Huang

In order to improve the manufacturing efficiency and product quality of transparent and complex plastic knobs, a hot runner injection mold is introduced in this paper. Based on a shared hot runner system and a module combination of the mold holders, inserts and the beryllium-copper cored cooling components, an effective general model for hot runner injection molding is developed. The beryllium copper insert extrusion process is employed to copy with the requirements of great variety, high quality, low price and short producing cycle for knob products. The results of CAE analysis and production validation for typical knobs and insert extrusion process demonstrate the effectiveness of the newly developed hot runner injection molding and that the product quality fulfill the requirements of real manufacturing process.


2013 ◽  
Vol 423-426 ◽  
pp. 1982-1989
Author(s):  
Jian An Zhou

The overall injection mold structure scheme was determined based on the processing analysis of a large LCD TV panel. Specific heating/cooling system and temperature control system aiming for better surface finish were designed. The runner system, which starts from a pin valve hot runner system and turn to cold runner and then to banana-like gates, was obtained. Lifters used for smooth ejection and pulling side cores were presented. The venting system and the material for the cavity plate were introduced. The assembly drawing was shown and the working process of the mold was described at last.


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