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《工程塑料应用》 2024年第01期
DOI:10.3969/j.issn.1001-3539.2024.01.016
高压连接器插座外壳模具设计与多目标注塑工艺优化
韩国泰,翟林,胡海朝
天津中德应用技术大学,天津 300350 
Mold design for shell of high voltage connector sockets and multi-objective injection molding process optimization
HAN Guotai, ZHAI Lin, HU Haichao
Tianjin Sino-German University of Applied Sciences,Tianjin 300350,China 
摘要:以高压连接器插座外壳为研究对象 ,进行模具设计和注塑工艺优化 ,在模具设计方面,将点浇口方案改为牛角式进胶方案,使模具结构由三板模简化为两板模 。 将牛角式浇口设计为嵌件结构,方便电火花成型加工,也方便浇口断裂时及时清理。为提高冷却效率,型腔部分采用环绕式水路设计 ,型芯部分采用水井式水路设计。由于产品下半部分壁厚较小,采用“圆顶杆 +扁顶杆”结合的顶出方式,解决产品难以脱出的问题,同时顶杆与顶杆孔的间隙可以跑气 ,解决型芯狭窄区域的困气问题。使用 Moldex3D 对浇注系统 、冷却系统设计方案进行仿真分析,验证设计方案合理,并获取初步注塑工艺参数。在工艺优化方面,以体积收缩率标准差和最大翘曲量为响应进行多目标注塑工艺优化,采用“正交试验+响应曲面实验”的方法优化,当熔体温度为228 ℃,保压压力237.5 MPa,保压时间 5.88 s 时多目标工艺参数最优,输入Moldex3D 软件进一步模拟 ,得到体积收缩率标准差为0.937%,降低 45.39%;最大翘曲量为0.181 mm,降低 21.30%,说明优化方案可行。 
Abstract:Taking the high voltage connector socket shell as the research object, mold design and injection molding process optimization were carried out. In terms of mold design, the point gate scheme was changed to a cow angle injection scheme, simpli‐ fying the mold structure from a three plate mold to a two plate mold. Design the horn gate as an embedded structure, which is conve‐ nient for EDM machining and timely cleaning when the gate breaks. To improve cooling efficiency, the cavity part adopts a circular waterway design, while the core part adopts a well waterway design. Due to the small wall thickness of the lower part of the product, a combined ejection method of " ejector pin + flat ejector pin" was adopted to solve the problem of difficult product detachment. At the same time, the gap between the top rod and the top rod hole can escape air, solving the problem of trapped air in the narrow area of the core. Using Moldex3D to simulate and analyze the design scheme of the pouring system and cooling system, the rationality of the design scheme was verified, and preliminary injection molding process parameters were obtained. In terms of process optimiza‐ tion, multi-objective injection molding process optimization was carried out in response to the standard deviation of volume shrink‐ age and maximum warpage. The method of "orthogonal experiment + response surface experiment" was used for optimization. When the melt temperature was 228 ℃, the holding pressure was 237.5 MPa, and the holding time was 5.88 s, the multi-objective process parameters were optimal. Inputting Mold 3D software for further simulation, the standard deviation of volume shrinkage is 0.937%, reducing by 45.39%, the maximum warpage is 0.181 mm, a decrease of 21.30%, indicating that the optimization plan is feasible. 
关键词:注塑模具设计;注塑工艺;正交实验;响应曲面实验;多目标注塑工艺优化 
Keywords:injection mold design; injection molding process; orthogonal experiment; response surface experiment; multi-objective injection molding process optimization 
基金:天津市应用基础研究项目(22JCYBJC00330) 
本文引用格式:
韩国泰,翟林,胡海朝.高压连接器插座外壳模具设计与多目标注塑工艺优化[J].工程塑料应用,2024,52(1):102-108.
HAN Guotai,ZHAI Lin,HU Haichao. Mold design for shell of high voltage connector sockets and multi-objective injection moldingprocess optimization[J]. Engineering Plastics Application,2024,52(1):102-108. 

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