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Structural form of twisted pair braided wire and requirements of its braiding equipment
Views:  Addtime:2022-04-01
At present, most twisted pair braids used are mainly composed of three parts. From the outside to the inside, they are sheath layer, insulating layer and conductive inner core. Its conductive inner core is used to transmit current. Therefore, copper inner core and aluminum inner core with high conductivity are selected, which can effectively reduce power loss and voltage.

For twisted pair braided wire, the function of insulating layer is to prevent current leakage along the radial direction and ensure safe use. Therefore, the insulating layer of twisted pair braided wire should have good insulation performance and heat resistance, and also have certain strength. The braid is only one of many sheath layers or outer sheath layers. According to the different materials used and different parts in the structure, the braid layer will also have different functions.

At present, there are two common structures of twisted pair braid. One is fiber braid, which is a light protective layer. It is mainly to protect twisted pair braid, reduce the erosion of various light, temperature, humidity and external force damage, and protect twisted pair braid from safe and normal use.

The other is metal braided layer, which is divided into copper wire braided layer and steel wire braided layer. The main feature of copper wire braided layer is that it can effectively protect 

against electromagnetic interference, eliminate the shielding effect of the surface potential of twisted pair braided wire, and eliminate induced electricity. In addition, it also has the function of safety protection, and can feed back the leakage in time. The main feature of steel wire braid is good mechanical protection, which can withstand large tensile force and shield magnetic field, so it can be used more safely.

In order to ensure the quality of twisted pair braided wire, the process requirements of braiding machine are very strict. For example, its control device should be sensitive and easy to adjust; And it is required that the disconnection rate is low, the disconnection or wireless should be able to stop automatically, and the production action should be sensitive and smooth. As the traction device of knitting machine, the spindle must be stable without collision; It is also necessary to ensure stable weaving pitch, uniform arrangement of wire strands and uniform weaving density.

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