Servo motor dynamic cable

Abstract

The invention discloses a servo motor dynamic cable, and belongs to the technical field of wires and cables. The cable comprises a cable core and an outer sheath extruded outside the cable core. The cable core comprises a signal line unit, a plurality of conductive units and a cable core shielding layer. The cable core shielding layer wraps the signal line unit and the conductive units. The signalline unit comprises a pair of signal transmission lines and an inner shielding sleeve. The pair of signal transmission lines is positioned in the inner shielding sleeve. The cable is characterized inthat the pair of signal transmission lines is of a 100% back-twist pair-twist structure, and a signal line unit inner wrapping layer is arranged on the inner side of the inner shielding sleeve; the outer side of the inner shielding sleeve is provided with a signal line unit outer wrapping layer, the inner side of the cable core shielding layer is provided with a cable core inner wrapping layer, the outer side of the cable core shielding layer is provided with a cable core outer wrapping layer, the cable core inner wrapping layer wraps the signal line unit and the conductive units, and the outer sheath is extruded outside the cable core outer wrapping layer. The cable has ideal flexibility; the anti-pulling capability is improved; good rolling resistance is shown; and the construction effectiveness is improved.

Description

technical field [0001] The invention belongs to the technical field of electric wires and cables, and in particular relates to a dynamic cable for a servo motor. Background technique [0002] Typical examples of the aforementioned servo motor dynamic cables are servo motor drag cables or servo motor drag chain cables. In recent years, with the continuous maturity and improvement of my country's high-end equipment manufacturing technology, the market demand for servo motor dynamic cables as the structural system of the matching servo control system has increased correspondingly, but at the same time more requirements have been put forward for servo motor dynamic cables. Stringent requirements. As known in the industry, since the aforementioned servo motor dynamic cables usually combine signal transmission lines (also known as signal control lines) and power lines together, they require excellent shielding effects to reflect good anti-interference capabilities. In addition to...

AI Technical Summary

Problems solved by technology

However, the structure of the servo motor dynamic cable in the prior art including the patent mentioned above is because the outer sheath is directly extruded outside the cable core shielding layer, specifically, under the pressure of the head of the extruding sheath machine , the material of the outer sheath (usually plastic) will be embedded in the metal shielding layer braided by metal wires such as copper wires, so it is very troublesome for the user to disconnect the outer sheath at the fracture, which will affect the construction efficiency; in addition, due to the unreasonable structure of the signal line, there will be twisting and deformation during the cabling process, which may affect the stability and reliability of the signal line transmission signal

And in the cabling process, the signal line will also rub against other lines such as the aforementioned conductive unit, that is, the power line, so that both the signal line and the conductive unit, that is, the power line, will be damaged.

Images