Usually in the design of the injection mold of the electrical fan mould , the gate is an essential structural feature, the design of the gate, the structure of the product mold, and the size of the product. The injection process and the performance of the product are all related. When designing the gate, we must consider that the gate section should be small and the length should be short, so as to increase the flow rate during injection, fast cooling and sealing, facilitate the separation of the plastic parts, and minimize the gate residue requirements.

Requirements for gate location:

1. Appearance requirements (Gate marks,  weld line) 
2. Product functional requirements
3. Mold processing requirements
4. Warpage of the product
5. The gate volume is not easy to remove

Impact on production and function:

1. Flow length (Flow Length) determines the injection pressure, clamping force, and the full flow length when the product is not filled can reduce the injection pressure and clamping force.
2. The position of the gate will affect the packing pressure. Whether the packing pressure is balanced or not. Keep the gate away from the future force position of the product (such as the bearing) to avoid residual stress. The gate position must consider exhaust to avoid wind accumulation. Do not place the gate at the weak or embedded part of the product to avoid misalignment (Core Shaft).