The various injection molding gate types have varying procedures for molding different components. However, as you choose between these designs, here are some essential factors to consider:
Gate Placement
Some gates are more difficult to separate than others because of their placement. Likewise, the order of some gates may lead to deformities and lines in molded parts. Hence, you must be careful about the gate placement in your injection molding design.
Gate Size
The gate size in injection molding must enable proper shearing whenever the mold passes through the machine. The gate dimensions must allow the correct filling of the mold. Smaller gates possess high shear heating rates. However, they can accidentally increase flow pressure if they are too small or too large. Hence, use gates of adequate size to get the best results.
Part Shape and Finish
Each gate design is recommended for molding parts with different shapes and achieving a particular finish. For instance, the cashew gate design is ideal for working smaller parts and offers smooth and uniform surface finishing.
Therefore, you must determine the perfect gate for your parts and preferred surface finish. In addition, you may want to consider features like undercuts which may hinder the straight ejection of finished plastic parts when dealing with complex shapes.
