Special high-flexibility cable for robots and manufacturing process thereof

Abstract

The invention provides a special high-flexibility cable for robots and a manufacturing process thereof. The cable is manufactured by wrapping a plurality of groups of cable cores with a tubular outersheath, a central body is arranged at the central position inside the outer sheath, the groups of cable cores are uniformly distributed along the circumferential direction of the central body, the central body is obtained by wrapping a second insulating layer on the surface of an aramid fiber, the cable cores are obtained by wrapping first insulating layers on the surfaces of wires, and the outersheath comprises an inner lining layer and a protective layer from inside to outside. The protective layer can play a protective role to prevent an outer skin from being damaged; on one hand, the inner lining layer can play a role in protecting the wire cores, on the other hand, the passing of electromagnetic waves can be inhibited, and the anti-interference performance of the cable is improved. The protective layer and the lining layer jointly endow the cable with extremely high flexibility, and the cable is special for robots, and is long in service life and stable in signal transmission.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to a special cable for highly flexible robots and a manufacturing process. Background technique [0002] A cable is a wire made of one or more mutually insulated conductors and an outer insulating layer that transmits power or information from one place to another. A rope-like cable that is usually twisted by several or groups of wires (at least two in each group), each group of wires is insulated from each other, and is often twisted around a center, and the entire outer surface is covered with a high degree of insulation overlay. They are composed of single-strand or multi-strand wires and soft copper conductors, which are used to connect circuits and electrical appliances. [0003] The cables used in automated robot equipment need to have the performance of reciprocating bending, moving, and even three-dimensional twisting, so as to adapt to the characteristics of the ...

AI Technical Summary

Problems solved by technology

However, when the current existing towline cables are bent, the internal multi-layer structure is often prone to delamination, and the relative movement between layers occurs when the cable is bent; in addition, for cables suspended at a higher distance In other words, due to the different tensile deformation of the material, delamination is easy to occur, resulting in relative movement between layers along the axial direction of the cable, which may lead to The load-bearing effect of fiber on the cable as a whole is poor

However, the current common solution is to roll the layers of the cable more compactly as far as possible through technological means, so as to prevent the delamination phenomenon of the cable and avoid the relative movement between the layers; For towline cables, the protective layer and insulating layer are made of ordinary materials, which often leads to poor bending resistance. Therefore, in a large number of reciprocating bending working environments, it is easy to cause cracks in the protective layer or insulating layer at the bend , which seriously affects the service life of the cable

[0004] Patent CN107658050A discloses a cable for robots. The cable body includes a cable core tape wrapped in sequence from the inside to the outside, a fiber braided reinforcement layer to prevent slipping and loosening during use, and an outer sheath. However, the cable is bent to When a certain number of times, the conductor core wire is easy to break, and the protective layer and insulating layer are made of ordinary materials, which cannot meet the use environment. The outer skin is easy to break during use, and the internal structure cannot be effectively protected, which greatly reduces the service life.

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