 Wysłany: Wto 0:28, 24 Maj 2011 Temat postu: mulberry helsinki Total 98 |
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| Injection mold design mobile phone shell
, Given by the bolt connection between the template can be. 5.2 Design of the exhaust system for small plastic parts plastic parts, and not using a special high-speed injection, no need to set up a dedicated exhaust ducts, so the use of sub-surface for the exhaust can. Introduced institutions and introduce core pulling 6.1 design institutions and reset mechanism 72 die _I: Cheng MOULD & DIEPROJECT2009 No. 6 (Total 98 as parts of simple structure, so the use of putting stripping agencies. Its use of reset mechanism putting the fixed plate installed in the Return. 6-2 core pulling outside pumping the most typical use of the most widely used core pulling angle pin structure,ed hardy mexico, the pumping structure with sloping roofs. 7.CAE plastic analysis using Moldflow software. First Analysis of optimal gate location, determine the number of gates, and then flow and warpage of plastic parts for analysis, at the design stage to assess the feasibility and design of molding, as the wall thickness distribution to modify the design and product reference, to avoid the potential formation issues, evaluate different design parameters to change shape of the product in order to make the necessary design changes and optimization. Finally, the experimental design Moldflow software optimization module DOE (DesignofExperiments), the workpiece thickness, melt temperature and mold temperature for the experiment parameters, determine the objectives of the various experimental parameters influence the degree of the size of experiments to obtain the best combination of experimental parameters. 7.1 gate location analysis can be PC / ABS material for analysis, UG for modeling software, Moldflow simulation software for. analyze the target for mobile phones before the shell, the shell wall thickness of the average design 1.5ram. The results are shown in Figure 5, when a location factor of 1 or close to l, that is the best gate location, factor value, the more small gate at the rationality of this position the smaller molding. optimization results can get the best location in the dark area near the gate, poured into a number of points will be good. Figure 5 the best gate location analysis ● _ ■ _ din '{j ■ ● 7.2 filling analysis based on injection molding process parameters set in the Moidfiow in the gating system and set the injection molding process, the model flow analysis, including the filling time, filling temperature, cooling time, melt flow, Weld, shear rate, some results are as follows: Figure 6 pairs of filled circles in Figure 6 that the distribution of parts filling time. From the figure we can see each part of the filling when filling the order, the dark, said first filling, arc segment intermediate said last filling. the right of the color of the timeline for the filling, indicating the specific time at every stage of filling, and filled with the plastic parts can know the time required. parts from both ends of the map can fill that time to close, indicating a more balanced fill both ends of the workpiece. PressureatV / Pstch @ vcr = 13.41MPal Figure 7 shows the distribution of parts filling pressure. It can be seen from the figure the time of filling the size of each part of the pressure to intermediate arcs that approximate the maximum pressure, minimum pressure, said more than a dark side. the right of the injection molding technology circle w ~ wv, mould-onnel color of the pressure shaft, pressure shaft and the parts with each part on a different color, can know when each part of the pressure of filling the size. When the short-shot parts, hysteresis,ed hardy shop, etc., can increase the size of gating system, change the location of the gate,ed hardy outlet, increasing the number of gates to improve the melt temperature, mold temperature increased, adjust the filling time, increase wall thickness, increased holding pressure and other ways to improve. other analysis projects which will not repeat them. Looking In this paper, the characteristics of mobile phones, the structure of the mold, gate location analysis, filling analysis,mulberry helsinki, the design pressure filling method in ensuring the performance and functionality under the premise of saving materials,mulberry norge, improved product design quality and efficiency. At present the traditional cold runner mold design is based on experience, it is difficult on the injection parameters for each strict mathematical modeling. With the injection of theoretical advances in technology and breakthroughs in the development of hot runner mold growing rapidly as the technology matures, hot runner mold production control easier, and better product quality improved, so future research will injection mold hot runner molds based. States Reference 【1] Hong Shen Zhang compiled practical injection molding and mold design 『M】. Machinery Industry Press, February .2006 version 1 [2】 Ping Bingguang, Hantai Rong, Jiang Wensen, eds. Die Design and manufacture of manual 【M] Second Edition, a Shanghai Science and Technology Press: 1998.7 [3】 Li Xiangpeng ed. UGNX4 Chinese die design [M】 People Post Press, November 2006 1st Edition 2009 ~ No. 6 (Total 9  MOULD & DIEPROJECT Die Engineering 73 - Nang:}; = 00
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