Torsional cable for robot arm

Abstract

The invention discloses a torsional cable for a robot arm. The torsional cable comprises a cable core stranded by three stranded wire pairs; a metal shielding layer is arranged between an outer sheath layer and cotton paper; the gaps among the cotton paper and the three stranded wire pairs are filled with multiple pieces of cotton yarns; an aramid cord is positioned in the gaps in the centers of the three stranded wire pairs, wherein the outer sheath layer comprises the following components in parts by weight: ethylene-tetrafluoroethylene copolymer, metallocene polyethylene, polypropylene, ethylene-octylene copolymer, maleic anhydride grafted ethylene-vinyl acetate copolymer, aluminium hydroxide, ammonium polyphosphate, organic montmorillonite, nanometer zirconium carbide, polytetrafluoroethylene micropowder, silane coupling agent, silicone powder, PE wax, dilauryl thiodipropionate DLTP, di-thioethers and pentaerythritol triacrylate. The torsional cable is flexible and tensile without generating frictional static; the torsional cable is a shielding data cable that can still keep the structural stability after the cable is frequently moved; and the rate of change of the electrical performance of the cable is less than 5% after the cable is bent for one hundred thousand times.

Description

technical field [0001] The invention relates to a cable, in particular to a twisting cable for a robot arm. Background technique [0002] Industrial robots are the most typical mechatronic digital equipment with high added value and a wide range of applications. As the supporting technology of advanced manufacturing and emerging industries in the information society, industrial robots will play an increasingly important role in future production and social development. important role. Foreign experts predict that the robot industry is a new large-scale high-tech industry after automobiles and computers. According to statistics from the United Nations Economic Commission for Europe (UNECE) and the International Federation of Robotics, the world robot market has a bright future. Since the second half of the 20th century, the world robot industry has maintained a good momentum of steady growth. In the 1990s, the development of robot products accelerated, with an average annua...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic industrial robot arm twisting cables and mechanical equipment cables are poor in ultra-flexibility and high strength, and there is a gap in performance, and high-end cables are still imported in large quantities.

In the prior art, its structure is generally to twist a group of conductors extruded with insulators to form a cable core, and then extrude the outer sheath. This structure cannot provide long-term stable operation for continuous and frequent torsion and bending applications. Guarantee, not suitable for applications that require fast acceleration, fast parallel movement and long-distance movement, because the above applications require cables to have higher flexibility, bending performance and tensile strength

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