Abstract: At present, a variety of touch outer parts in the appliance industry are widely used, such as remote controller, phone charger, switch and button. However, it’s easily to occur dislocation, segment difference and burrs, which can be the fatal quality defects in terms of products quality. Taking the example of electric kettle button, this paper will study the reasons why dislocation and segment difference and burrs occur and also put forward the corresponding mold design solution. It’s not only meet customers’ requirements towards appearance and update product grade, but also make a breakthrough for such pain point of the mold. This paper will state from the aspects of products burrs defect analysis and mold structure design, so readers can have an idea about fine positioning technology of the internal mold.

Key words: Touch outer parts, Product burr defects, Internal mold's fine positioning