There are many correct and incorrect processes in the manufacture of shielding layers. One of the most important parameters is the braiding angle of the shielding layer.

In cables used in drag chains, the load on the shield of the outer diameter of the cable must be taken into account. An unreasonable shield braiding angle will further increase the tensile load, resulting in shield breakage. As a result, the shielding effect is weakened, and when the sharp cable tail pierces the wool fabric or foil gold material and contacts the core wire, it can even cause a short circuit. Here, we recommend you a useful tip: if you strip off the insulation, you can easily push the shield back into the jacket, but such a shield cannot be used in energy supply systems, moving High flexible cable. Of course, igus is able to provide direct solutions to these problems:

The braiding angle of the shielding layer determined by long-term experiments can effectively offset the tension, so it is very suitable for drag chains.

Due to the stable inner sheath, the shield will not relax and fail.

In a stranded wire structure, the shield itself is resistant to torsion.

The sheath is worn or damaged

Any defect in the internal structure is difficult to detect from the outside, but problems with the sheath can be directly observed with the naked eye. The jacket is the y.i layer of protection for the precise internal structure of the cable. This is why cracked, worn and expanded sheaths are very serious quality issues. To avoid such problems, igus offers seven different material cable jackets for users to choose according to the corresponding working environment of their machinery.

Armor type extruded sheath

Manufacturing process and materials are also important factors in determining product quality. In some so-called cables suitable for drag chains, the sheath is usually tubular, so it cannot provide the necessary support for the stranded structure during long-term bending, so that the stranded structure is prone to splitting.

This sheath ensures that the core wires of the cable will not loosen when the cable is in motion. The reason is that the sheath is extruded through a particularly large pressure, and it acts like a guide groove, which guides the movement of the core wire and also supports the movement of the core wire. Therefore, it is very suitable for energy chains.

Summarize the quality assurance of high-flex cables for drag chains: Central strain relief design; Multi-strand cable structure; Armor-like extruded inner jacket in shielded cables; Fully shielded insulating braid; Optimized shield braid angle ; Armor extruded sheath.