Manufacturing process of plug power cord

Generally speaking, the power cords produced by power cord manufacturers need to be recognized and certified by certification agencies in various countries, and are very mature in producing power cord plugs. So what is the manufacturing process of the power cord? Below, Dongguan Lanyue Electronics will introduce it to you.

Firstly, it is necessary to draw copper and aluminum monofilaments from Shenyuan wire. The commonly used copper and aluminum rods for power cords should be drawn using a wire drawing machine at room temperature Pass through one or several stretching molds and reduce the loading surface to change the tensile length and strength. Drawing is the first process of various wire and cable companies.

After pulling the wire, perform single wire annealing. Copper and aluminum single wires are heated to a certain temperature and recrystallized to improve their toughness and reduce their strength, in order to meet the requirements of wire and cable for conductive cores. Annealing sequence enhances the oxidation resistance of copper wire In order to increase the flexibility of the power cord and meet the requirements of the installation, the conductive wire core should be made up of multiple single wires twisted together. So after annealing the single wire, the next step is to twist the wire. From the twisting method of the conductive wire core, it can be divided into regular twisting and irregular twisting. Irregular twisting can be divided into bundle twisting, concentric twisting, extraordinary twisting, etc. In order to reduce the occupied area of wires and minimize power supply

The geometric dimensions of the wire are also compressed in twisted conductors, transforming ordinary circles into semicircles, sectors, tile shapes, and compressed circles. This type of conductor is mostly suitable for power lines.

The previous process is only the manufacturing process of the conductor of the power cord, which requires plastic wrapping to obtain insulation. The power cord primarily uses extruded solid insulation layer, and the primary technical requirements for plastic insulation extrusion are:

1) Adjusting eccentricity: The deviation value of the extruded insulation thickness is a clear rule in the standard, and the specific parameters are based on the standards provided by certification agencies in various countries.

2) Smoothness: The extruded insulation layer should have a smooth surface and should not exhibit poor quality issues such as roughness, burning, bubbling, impurities, etc.

3) Density: The cross-section of the extruded insulation layer should be dense and dense, with no visible pinholes or bubbles.