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分析了汽车尾灯座塑件结构,针对其具有包边、内侧凹及其精度高的特点,运用MPI软件确定塑件最佳浇口位置。对一模二腔的浇注系统进行了MFI模流分析,得到充模时间为1.947 s、注射压力为45.0892 MPa、锁模压力为25.5925 t;并验证了拟定的浇注系统是可行的。在模流分析基础上,利用UG软件设计了包含顺序定距分型、4套侧向摆杆分型抽芯机构和5套精度保持系统等的模具结构,结果表明设计方案合理,模具生产效率高。
The plastic part structure of the tail lamp seat is analyzed. According to the characteristics of the plastic part, the MPI software is used to determine the best position of the gate. MFI mode flow analysis was carried out on a mold-two-cavity casting system. The charging time was 1.947 s, the injection pressure was 45.0892 MPa and the clamping pressure was 25.5925 t. The proposed pouring system was validated. On the basis of mold flow analysis, the mold structure including sequential type positioning, 4 sets of lateral pendulum type core pulling mechanism and 5 sets of precision maintaining system were designed by UG software. The results show that the design scheme is reasonable and the mold production efficiency high.