B11-空调设备外壳成型设计

As air conditioners have become necessities in our life nowadays, people request higher quality with lower prices. To increase marketing competitiveness, production technology improvement is one of the common approaches to provide better quality and cheaper price to customers. However, due to the shell design characteristics of the plastic covers used in air conditioners, challenges during molding process become more and more troublesome. In this study, the cover of air conditioner is taken as an example. Its dimensions are generally designed larger than the others, so the thickness must be set around 2~3 mm and a composite material with high percentage of glass fiber is chosen for the strength of cover part. Though material with fiber contributes a lot for the structure reinforcement, it induces more complicated warpage problem as well. Without revision of part design and material change, the optimization of runner and cooling system are the key methods to solve warpage problem. We implement CAE software, Moldex3D, to simulate fiber effect on warpage, revise runner and cooling system, and investigate the revised design. It shows an optimal product molding process can be gained to save the time and cost for trial mold and get quality improvement.

 

Keyword: Injection molding, warpage, fiber effect.