Enhanced Cooling Channel Performance in Injection Molds

增强注塑模具的冷却通道性能

基本信息

批准号：
521283-2017
负责人：
Barron, Ronald
金额：
$ 1.82万
依托单位：
University of Windsor
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2017
资助国家：
加拿大
起止时间：
2017-01-01 至 2018-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640021
关键词：
Enhanced Cooling Channel Performance Injection

项目摘要

Advancements in light emitting diode (LED) technology have created new opportunities for automotive manufacturers to use LEDsin vehicle head and tail lights. Thicker plastic lenses and complex profiles are required to optimize the optical characteristics ofLED lights. Plastic thickness is a concern for mass production because of the increased amount of heat that must be removedfrom the molten plastic before it leaves the mold. The cooling time for a plastic part that is 4-6 times thicker than normal can be upto 10 times longer than the traditional thinner part. The increased costs inherent with longer cycles currently make thick wallinjection molded parts cost prohibitive for mass production.Cycle times can be reduced by optimizing the cooling passages within the molds. The current practice is to drill a network ofinterconnected straight cooling lines that do not conform to the complex surface profiles of todays automotive styles. Thisprevents implementation of a conformal cooling strategy that consistently positions cooling lines along the complex profiles of themold to optimize the heat transfer.The research will initially investigate the heat transfer and fluid flow in straight and conformal cooling inserts throughComputational Fluid Dynamics (CFD) and Heat Transfer simulations and analysis. Simulations will then be used to optimize thedesign of cooling passages to extract maximum heat from the surrounding material. Finally, multiphysics models will be developedto more accurately predict the thermal characteristics of the complete injection molding system.

发射二极管（LED）技术的进步为汽车制造商使用LEDSIN车头和尾灯创造了新的机会。需要较厚的塑料透镜和复杂的轮廓来优化光明的光学特性。塑料厚度是批量生产的关注点，因为在离开霉菌之前必须从熔融塑料中除去的热量增加。塑料零件的冷却时间比正常厚度高4-6倍，可能比传统较薄的部分长10倍。目前，较长的周期固有的成本增加使批量生产的成本较高。循环时间可以通过优化模具中的冷却通道来减少。当前的做法是钻一个与直接冷却线的网络，该网络不符合当今汽车样式的复杂表面配置文件。这种Perfents实施了保形冷却策略，该策略始终将冷却线沿着Themold的复杂曲线定位，以优化热传递。研究最初将通过计算机流体动力学（CFD）和热传递模拟和分析和传热流体动力学（CFD）中的直和形式冷却插件中的热传递和流体流动。然后，将使用模拟来优化冷却通道的特征，以从周围材料中提取最大热量。最后，将开发多物理模型以更准确地预测完整注射模制系统的热特性。