A highly flexible motion cable structure

Abstract

The present invention provides a high-flexibility movement cable structure. The high-flexibility movement cable structure comprises a cable core; the cable core is wrapped with a cable core wrapping belt, first conductive fabric, a metal shielding layer, second conductive fabric and an outer sheath sequentially; the metal shielding layer is made of metal wires, wherein the metal wires are woven or wound on the first conductive fabric; the first conductive fabric and the second conductive fabric are both a metal-plated fabric sheet, a conductive paint-sprayed fabric sheet or a conductive paint-mirroring ejected fabric sheet; and the outer sheath is made of a thermoplastic material. With the high-flexibility movement cable structure of the invention adopted, problems in high and low-frequency electromagnetic shielding of the movement cable in a complicated environment can be effectively solved, and long-term, stable and reliable shielding can be provided in the complicated environment. High-flexible shielding design is adopted, the installation radius of the cable is smaller, and the cable is easier to install; and shielding components such as metal hoses are not required to be installed additionally when the cable is installed, and therefore, cost can be effectively reduced.

Description

technical field [0001] The invention relates to a cable structure, in particular to a high-flexibility sports cable structure. Background technique [0002] Motion cables are generally used in industrial automation intelligent equipment such as robots and drag chain systems; the motion cables perform continuous and uninterrupted bending, bending, twisting and other movements with the continuous movement of the robot arm or drag chain system. The requirements for long-term reliability of motion cables in continuously dynamic environments are very high. The currently used sports cables basically have the following forms in the shielding design: [0003] The first shielding method: add one or more layers of shielding or metal wire braided to the cable core (one or more of data cable core, signal cable core, power cable core, or hybrid cable core) Wire wrap around the shield to form a wire shield. [0004] The second shielding method: one or more of the cable cores (data cabl...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned first shielding method can play a shielding role for low-frequency electromagnetic interference, but its effect is not ideal for high-frequency electromagnetic interference

Although the second shielding method can shield both low-frequency electromagnetic interference and high-frequency electromagnetic interference, since the moving cable is continuously and continuously bent and twisted along with the movement of the robot arm or drag chain system , twisting and other movements, so the metal strip in the second shielding method is easy to break or crack after a period of bending, bending, twisting and other movements, which will also lead to its failure to shield high-frequency electromagnetic shielding , so as to generate electromagnetic interference to the cable core; and, the metal flakes or metal particles produced after the metal strip is broken or broken will enter the cable core and will adhere to the insulation layer of the cable core, and with the continuous movement of the moving cable (bending, bending, twisting, etc.), there will be continuous friction between the insulating layer and metal fragments or metal particles, which will lead to the wear of the insulating layer, and finally cause the breakdown of the insulating layer and cause the failure of the moving cable; therefore, the first The two shielding methods do not provide long-term stable shielding effect and use effect

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