Flexible control cable

Abstract

The utility model discloses a flexible control cable, which relates to the technical field of cables, aims to solve the problem of poor bending resistance of the cable in the prior art, and adopts the technical scheme that the flexible control cable comprises a stranded conductor, a reinforcing piece and a filling strip, an insulating layer is extruded outside the stranded conductor to form an insulating wire core, and the reinforcing piece is extruded outside the insulating wire core to form an insulating layer. A braided reinforcing layer is braided outside the insulated wire cores; the high-strength aramid yarn is added in the stranded conductor, and the aramid has the characteristics of high tensile strength, high tensile force, low extension, high modulus, high breaking strength, high temperature resistance, flame retardance and the like; a plurality of groups of insulating wire cores which are externally braided with the braided reinforcing layers are twisted to form a cable core, gaps of the cable core are filled with filling strips, and the center of the cable core is filled with a reinforcing piece; an inner sheath is extruded outside the cable core, a metal reinforcing layer is woven outside the inner sheath, and an outer sheath is extruded outside the metal reinforcing layer.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a flexible control cable. Background Technology

[0002] In recent years, with the rapid development of artificial intelligence and robotics technology, robots have been used more and more widely in manufacturing, medical care, service and other fields. Flexible cables, which are important components for transmitting power and control signals in industrial robots, must have performance characteristics that are adapted to the operation of industrial robots in order to meet the requirements of use.

[0003] Higher requirements are being placed on the bending resistance and flexural strength of cables, requiring robot cables to possess excellent mechanical and electrical properties. However, currently used control cables typically use cross-linked polyethylene or polyvinyl chloride insulated cables, which cannot meet the requirements for robot cables. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a flexible control cable that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model discloses a flexible control cable. The technical solution includes a stranded conductor, a reinforcing member, and a filler strip. The stranded conductor is covered with an insulation layer to form an insulated core, and the insulated core is braided with a braided reinforcing layer. High-strength aramid yarn is added to the stranded conductor. Aramid yarn has characteristics such as high tensile strength, high tensile strength, low elongation, high modulus, high breaking strength, high temperature resistance, and flame retardancy.

[0006] Multiple sets of outer braided reinforcing layers of insulating wire cores are twisted into cable cores, the center of the cable core is filled with reinforcing members, and the gaps between the cable cores are filled with filler strips;

[0007] The cable core is extruded with an inner sheath, the inner sheath is woven with a metal reinforcing layer, and the metal reinforcing layer is extruded with an outer sheath.

[0008] As a preferred technical solution of this utility model, the stranded conductor includes aramid yarn and strands, and multiple strands of the strands are stranded with one strand of the aramid yarn to form the stranded conductor, and the stranding directions of adjacent layers of strands are opposite, with the outermost layer stranding direction being to the left.

[0009] As a preferred embodiment of this utility model, the strands are Class 6 conductors and have a regular stranded structure.

[0010] As a preferred technical solution of this utility model, the aramid yarn is the center strand of the stranded conductor and is externally extruded with insulating material; the center strand is made of aramid yarn with externally extruded insulating material, and aramid yarn is added to each conductor of the six types of conductors to improve the load-bearing strength of the cable insulation core. When the insulation core is bent and tensile, the aramid yarn is the main force-bearing element, thereby ensuring that the conductor of the cable does not break after multiple bends.

[0011] As a preferred embodiment of this invention, the insulating layer is made of thermoplastic polyester elastomer material.

[0012] As a preferred embodiment of this invention, the woven reinforcing layer is made of aramid yarn.

[0013] As a preferred technical solution of this utility model, the filler strip is made of ceramic fireproof filler rope, which can enhance the tensile strength of the cable, ensure the relative position stability of the insulated cores, and ensure that the cable has good roundness.

[0014] As a preferred technical solution of this utility model, the reinforcing member is made of insulating material extrusion and has aramid yarn at the center position, which can improve the overall load capacity of the cable and reduce the tensile force on the insulated core, thereby enhancing the overall flexibility of the cable core. When the cable is bent and tensile, the aramid yarn is the main force-bearing element, thus ensuring that the insulated core does not break after multiple bends, giving the cable better bending resistance and folding resistance.

[0015] As a preferred embodiment of this utility model, the inner sheath is made of polyurethane elastomer material; the outer sheath is made of nylon material.

[0016] As a preferred technical solution of this utility model, the metal reinforcing layer adopts steel wire braided armor, with the inner sheath and outer braided steel wire armor, which not only improves the tensile strength of the cable, but also gives the cable a good anti-interference shielding effect.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model adds high-strength aramid yarn to the stranded conductor. Aramid has the characteristics of high tensile strength, high tensile force, low elongation, high modulus, high breaking strength, high temperature resistance, and flame retardancy. The center strand uses aramid yarn to extrude insulation material, which improves the load-bearing strength of the cable insulation core. When the insulation core is bent and tensile, the aramid yarn is the main force-bearing element, thereby ensuring that the conductor of the cable does not break after multiple bends.

[0018] In this invention, the filler strip is made of ceramicized fireproof and fire-resistant filler rope, which can enhance the tensile strength of the cable, ensure the relative position stability of the insulated core, and ensure that the cable has good roundness. The reinforcing member at the center of the cable core is made of extruded insulating aramid filler strip, which can improve the overall load capacity of the cable, reduce the tensile force on the insulated core, and enhance the overall flexibility of the cable core. When the cable is bent and tensile, the aramid yarn is the main force-bearing element, thereby ensuring that the insulated core does not break after multiple bends, and giving the cable better bending resistance and folding resistance.

[0019] In this invention, the inner sheath is covered by an outer braided steel wire armor, which not only improves the tensile strength of the cable but also gives it good anti-interference shielding properties. The outer sheath is made of nylon, which has good processing performance, flexibility, toughness, and wear resistance, as well as good self-lubricating properties and chemical corrosion resistance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] In the diagram: 1. Aramid yarn; 2. Ply yarn; 3. Insulation layer; 4. Braided reinforcement layer; 5. Filler strip; 6. Reinforcing element; 7. Inner sheath; 8. Metal reinforcement layer; 9. Outer sheath. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] like Figure 1 As shown, this utility model discloses a flexible control cable. The technical solution adopted is that the conductor core is a stranded conductor, each stranded conductor is added with aramid yarn 1, and the center strand of the regular stranded conductor is made of extruded insulated aramid yarn 1.

[0024] The reinforcing element 6 is made of aramid fiber, and filler strips 5 are filled around the stranded conductor. Filler strips 5 are made of ceramicized fire-resistant and fire-resistant filler rope to enhance the tensile strength of the cable. Filler strip 6 is located at the center of the cable core. The reinforcing element 6 is filled with extruded aramid insulation. This structure improves the overall load-bearing capacity of the cable. Under pressure and torsion, it ensures the relative position stability of the insulated cores and reduces the tensile force on the insulated cores, enhancing the overall flexibility of the cable core. During cable bending and tension, the aramid yarn acts as the main load-bearing element, ensuring that the insulated cores do not break after multiple bends, giving the cable better bending and folding resistance. The inner sheath 7 and outer sheath 9 of the cable are made of polyurethane elastomer and nylon double sheaths, respectively, giving the cable excellent flexibility, toughness, and abrasion resistance. A metal reinforcing layer 8 is used between the double sheaths. The metal reinforcing layer 8 is made of steel wire braided armor, which not only improves the tensile strength of the cable but also provides good anti-interference shielding.

[0025] The working principle of this utility model is as follows: the stranded conductor is a Class VI conductor and has a regular stranded structure. That is, multiple single wire bundles are first stranded into strands 2, and an aramid yarn is added to each conductor. All strands 2 are stranded in the same direction. Then, the multiple strands 2 are re-stranded into a stranded conductor. When re-stranding, the re-stranding directions of adjacent layers of strands 2 are opposite, and the re-stranding direction of the outermost layer is to the left.

[0026] Each stranded conductor is supplemented with a high-strength aramid yarn 1. The center strand in the regular stranding uses aramid yarn with extruded insulation material. The outer diameter of the extrusion is the same as the outer diameter of the strand 2. The insulation material is thermoplastic polyester elastomer (TPEE).

[0027] The stranded conductor is covered with an extruded insulation layer 3, the insulation layer 3 is covered with a braided reinforcing layer 4, the insulated core is reinforced with braided aramid yarn to form a cable, the gaps between the cable cores are filled with high-strength ceramic fireproof filling rope filling strips 5 and the center is filled with extruded insulation material aramid yarn reinforcing member 6, the insulation material is thermoplastic polyester elastomer (TPEE), the cable core is covered with an inner sheath 7, the inner sheath 7 is covered with a braided metal reinforcing layer 8, and the metal reinforcing layer 8 is covered with an outer sheath 9.

[0028] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0029] Components not described in detail in this article are existing technologies.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible control cable, characterized in that: It includes a stranded conductor, a reinforcing member (6) and a filler strip (5), wherein the stranded conductor is covered with an insulating layer (3) to form an insulated core, and the insulated core is braided with a braided reinforcing layer (4). The insulating wire cores of the multiple sets of the braided reinforcing layer (4) are twisted into a cable core, the center of the cable core is filled with a reinforcing member (6), and the gaps between the cable cores are filled with filler strips (5). The cable core is covered with an inner sheath (7), the inner sheath (7) is woven with a metal reinforcing layer (8), and the metal reinforcing layer (8) is covered with an outer sheath (9).

2. The flexible control cable according to claim 1, characterized in that: The stranded conductor includes aramid yarn (1) and strands (2). Multiple strands of the strands (2) are twisted together with one strand of the aramid yarn (1) to form the stranded conductor. The stranding directions of adjacent layers of strands (2) are opposite, and the outermost layer is twisted to the left.

3. A flexible control cable according to claim 2, characterized in that: The strand (2) is a Class 6 conductor and has a regular stranded structure. An aramid yarn is added to the strand (2).

4. A flexible control cable according to claim 2, characterized in that: The aramid yarn (1) is the center strand of the stranded conductor and is covered with insulating material.

5. A flexible control cable according to claim 1, characterized in that: The insulating layer (3) is made of thermoplastic polyester elastomer material.

6. A flexible control cable according to claim 1, characterized in that: The braided reinforcing layer (4) is made of aramid yarn.

7. A flexible control cable according to claim 1, characterized in that: The filler strip (5) is made of ceramic fireproof filler rope.

8. A flexible control cable according to claim 1, characterized in that: The reinforcing member (6) is made of insulating material extrusion and has aramid yarn at the center.

9. A flexible control cable according to claim 1, characterized in that: The inner sheath (7) is made of polyurethane elastomer material; the outer sheath (9) is made of nylon material.

10. A flexible control cable according to claim 1, characterized in that: The metal reinforcing layer (8) is made of steel wire braided armor.

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