Understanding The Working Principle of Household Switches

Product Design

• Function Planning: Communicate with customers to clearly define the usage scenarios and functional requirements of the switches. For example, household switches need to be easy to operate and safe, while industrial switches should focus on durability and stability.

• Appearance Design: Design the appearance by combining aesthetics and ergonomics to ensure that the switch has an attractive shape and is comfortable to hold and operate with minimal effort.

• Structural Design: Design the internal structure and determine the shape, size, and connection methods of the components. Ensure that all parts fit tightly together to guarantee stable switch performance.

Mold Design and Manufacturing

• Mold Design: Based on the design of the switch product, use professional software (such as CAD, UG, etc.) to design the mold. Determine the parting surface, gating system, cooling system, and ejection mechanism of the mold.

• Mold Material Selection: Select suitable mold steels, such as Cr12MoV and P20, according to the usage requirements and cost considerations of the mold.

• Mold Machining: Use equipment and processes such as CNC machining centers, EDM (Electrical Discharge Machining), and wire - cutting to manufacture the mold. Ensure the precision and surface quality of the mold.

• Mold Assembly and Debugging: Assemble the machined mold components and conduct debugging and optimization. Ensure that the mold can work properly and produce switch products that meet the requirements.

Material Selection

• Plastic Materials: Commonly used plastic materials for switch housings include polycarbonate (PC) and acrylonitrile - butadiene - styrene copolymer (ABS). These materials have good insulation properties, mechanical performance, and flame retardancy.

• Metal Materials: Conductive parts of switches usually use metals such as copper and copper alloys to ensure good electrical conductivity.

Injection Molding

• Melting of Plastic Pellets: Put the selected plastic material pellets into the barrel of the injection molding machine and heat them until they melt into a liquid state.

• Injection into the Mold Cavity: Under the pressure of the injection molding machine, inject the molten plastic into the mold cavity.

• Cooling and Shaping: The plastic cools and solidifies in the mold cavity to form the switch housing or other plastic components.

• Ejection: Open the mold and take out the molded plastic components.