The wire and cable industry is the basic industry of our country. Over the years, the average annual growth rate of my country's wire and cable industry has exceeded 15%, which has surpassed that of foreign countries; as a supporting product of wire and cable, Pet Zipper Braided Sleeve are also growing.
With the rapid development of modern electronic technology, the problems of electromagnetic leakage and interference are becoming more and more prominent.
PET Zipper Braided Sleeve mainly play the role of mechanical protection and electromagnetic interference shielding. The laying ofPET Zipper
Braided Sleeve and the appearance of wires and cables are to prevent electromagnetic leakage and interference. Shielding protection is also an important protection method to prevent the communication system from being paralyzed by nuclear magnetic strikes in modern warfare. Different application fields have many other requirements for PET Zipper Braided Sleeve, such as: weldability, high temperature resistance, corrosion resistance, oxidation prevention, and electrical conductivity. Performance, flame-retardantPET Zipper Braided Sleeve, good shielding performance, light weight, low cost and other issues.
In response to these problems, many manufacturers of PET Zipper Braided Sleeve have researched and developed the light weight and soft performance from the aspects of raw material selection, weaving equipment transformation, and thread tension control during the weaving process. Good, high temperature resistance, high strength, high weaving density, a new type ofPET Zipper Braided Sleeve that can meet the requirements of different application fields.
There are currently two types of domestic high-speed knitting equipment. One is the falling spindle knitting method. The falling spindle knitting method is more complicated, and the oil on each part is easy to contaminate the product. The advantage is that the weaving speed is faster, but the yield is lower; the other is The first is the weaving method of horse-riding, each part is distributed below the spindle to avoid oil pollution, and the speed is almost the same as that of vertical weaving. Now domestic self-developed knitting machines can basically meet the production requirements.
There are two pads under the pitch gear of the horse-riding weaving. There is slippage during weaving. It is modified to reduce the height of the pads and add a pad to improve the meshing of the gears and ensure the control of the pitch. Increase the take-up tension and improve the consistency of take-up and pay-off speed.
Material selection In order to meet the anti-electromagnetic leakage or anti-interference function of the PET Zipper Braided Sleeve, and at the same time meet the performance indicators such as weldability, softness, light weight, anti-oxidation, high temperature resistance and high strength, Huiyunhai Technology selects tinned copper wire , nickel-plated copper wire, tin-plated copper alloy wire and tin-plated copper-clad steel wire, etc., and determined the corresponding wire diameters as 0.1mm and 0.12mm respectively. Compared with the previous technology, the wire is thinner .
The reduction in wire diameter during the development process puts forward higher requirements for the weaving process. Due to the thinner wire material, it is easy to cause broken wires during the weaving process. The wire reel is changed to a pay-off shaft, and a special pay-off frame for wires is used. While laying out the wires, change the fixture of the paralleling machine to one that can assemble 48 spindles, adjust the paralleling stroke, and re-adjust the paralleling pitch. This method can make the paralleling tension uniform and there is no "pressing wire" phenomenon.
According to the production speed ofPET Zipper Braided Sleeve, properly adjust the take-up brake pads to keep the take-up speed consistent with the pitch gear speed. In order to ensure that the new PET zipper braided sleeve is more conducive to threading the cable, the friction of the brake pad is reduced at the take-up rotating gear, so that the take-up tension is minimized, which can ensure that the take-up tension is small, and the product will not be broken, which is beneficial to the weaving process. The broken wire rate is too high, resulting in unnecessary waste. The new PET zipper braided sleeve after weaving in this way is "empty tube", and will not be compressed "flat" after wiring, which is very conducive to the threading of wires and cables. .
Shenzhen Huiyunhai Tech.Co., Ltd.
