Novel high-strength distortion-resistant anti-electromagnetic interference robot cable

Abstract

The utility model discloses a novel high-strength distortion-resistant anti-electromagnetic interference robot cable, which relates to the field of cables and comprises conductive wire cores, insulating layers are fixedly mounted on the conductive wire cores, two conductive wire cores are combined into a cable core, polyester film belts are fixedly mounted on the two insulating layers, and a plurality of groups of polyester film belts form a whole cable core. A shielding layer is fixedly arranged on the plurality of polyester film belts, polypropylene fibers are filled between the polyester film belts and the shielding layer, and an outer protective layer is fixedly arranged on the shielding layer. The cable conductor adopts six types of softer copper wires, polypropylene fibers are introduced during bunch stranding, the tensile capacity of the cable is remarkably improved, cable core wires are twisted in pairs and then cabled, the twisted pitch and the cabling pitch-diameter ratio are controlled, the flexibility of the cable is improved, the shielding layer adopts an aluminum plastic tape and copper wire braided composite structure, the anti-interference capacity of the cable is greatly improved, and the service life of the cable is prolonged. And the cable core is directly extruded by the high-strength polyurethane sheath to serve as a protective layer, so that the torsion resistance of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a novel high-strength, torsion-resistant and electromagnetic interference-resistant robot cable. Background Art

[0002] Robot technology is developing rapidly. In 2023, the global robot market will reach 56 billion US dollars. As an important component connecting various parts of robots, the robot cable industry also benefits from the rapid growth of the global robot market. The global robot cable market will reach 6.7 billion US dollars, and the demand for robot cables will reach 110 million meters, of which the demand for industrial robot cables will reach 60 million meters, the demand for service robot cables will reach 40 million meters, and the demand for special robot cables will reach 10 million meters. The average annual growth rate of global robot cable demand will reach 15%.

[0003] Due to the high level of robot technology, high requirements are placed on the performance and quality of robot cables. Therefore, there is a great demand for high-end robot cable products. In the existing technology, there is a lack of cables suitable for use in robots. Therefore, a new type of high-strength, torsion-resistant and electromagnetic interference-resistant robot cable is needed to meet people's needs. Utility Model Content

[0004] The utility model aims to provide a novel high-strength, torsion-resistant and electromagnetic interference-resistant robot cable to solve the problem of lack of cables suitable for use in robots in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A new type of high-strength, torsion-resistant and electromagnetic interference-resistant robot cable comprises a conductive core, an insulating layer is fixedly installed on the conductive core, two conductive cores are combined into a cable core, polyester film tapes are fixedly installed on the two insulating layers, multiple groups of polyester film tapes form a whole cable core, shielding layers are fixedly installed on multiple polyester film tapes, polypropylene fibers are filled between the polyester film tapes and the shielding layers, and an outer sheath is fixedly installed on the shielding layer.

[0007] Preferably: the conductive core adopts a 6-category conductor structure, which is composed of a number of soft round copper wires of the same diameter, which are regularly twisted in a concentric manner and successively in different directions at different levels, or can be bundled. Polypropylene wire is installed between the conductive core and the insulating layer, and the polypropylene wire is 0.2 mm polypropylene wire.

[0008] Preferably, the insulating layer is made of modified nitrile elastomer PVC insulating material, and the thickness of the insulating layer is 0.3 to 0.6 mm.

[0009] Preferably, the polyester film tape is formed by winding a polyester film, with double layers of overlapping wrapping, the overlapping rate cannot be less than 25%, and the thickness of the polyester film tape is 0.1 mm.

[0010] Preferably, the shielding layer is made of aluminum-plastic composite tape and copper wire braid, and the thickness of the shielding layer is 0.2 to 0.4 mm.

[0011] Preferably, the outer protective layer is made of polyurethane plastic, and the thickness of the outer protective layer is 0.3 to 0.6 mm.

[0012] Preferably: the conductive cores inside the polyester film tape need to be set to an even number, the twisting pitch of the polyester film tape is not greater than 8 times the outer diameter of the twisted wire group, and multiple polyester film tape groups are cabled to control the cable pitch-diameter ratio to be no greater than 12 times of the polyester film tape.

[0013] The beneficial effects of the utility model are:

[0014] The conductor of this high-strength, torsion-resistant and electromagnetic interference-resistant robot cable adopts six types of softer copper wires. Polypropylene wires are introduced during the twisting process to significantly improve the tensile strength of the cable. The cable core wires are twisted in pairs and then cabled to control the twisting pitch and the pitch-to-diameter ratio of the cable to improve the flexibility of the cable. The shielding layer adopts an aluminum-plastic tape and copper wire braided composite structure to greatly improve its anti-interference ability and also plays a radial moisture-proof role. A special extrusion die is used for extruding the outer sheath. The cable core directly adopts a high-strength polyurethane sheath as the protective layer to improve the torsion resistance of the cable.

[0015] The structural design of this high-strength, torsion-resistant and electromagnetic interference-resistant robot cable focuses on torsion resistance and improved tensile strength, taking into account the cable cost. It has high-performance cables with multiple effects such as high strength, torsion resistance, electromagnetic interference resistance, safety and reliability, energy saving and durability. This product also has good electrical transmission performance. This product can be widely and long-term used in industrial automation systems, production line systems, welding robots, submersibles, handling robots, CNC machine tools and metallurgical industries, and complex occasions that require back and forth movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a novel high-strength, torsion-resistant, and electromagnetic interference-resistant robot cable of the utility model.

[0017] In the figure: 100, conductive core; 200, insulating layer; 300, polyester film tape; 400, polypropylene yarn; 500, shielding layer; 600, outer sheath. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1 A novel high-strength, torsion-resistant and electromagnetic interference-resistant robot cable comprises a conductive core 100, an insulating layer 200 is fixedly installed on the conductive core 100, two conductive cores 100 are combined into a cable core, a polyester film tape 300 is fixedly installed on the two insulating layers 200, a plurality of groups of polyester film tapes 300 form a whole cable core, a plurality of polyester film tapes 300 are fixedly installed with a shielding layer 500, a polypropylene yarn 400 is filled between the polyester film tape 300 and the shielding layer 500, an outer protective film 500 is fixedly installed on the shielding layer 500 The conductor of the 600-layer, high-strength, torsion-resistant and electromagnetic interference-resistant robot cable adopts six categories of softer copper wires. Polypropylene wires are introduced during bundle twisting to significantly improve the tensile strength of the cable. The cable core wires are twisted in pairs and then cabled to control the twisting pitch and the pitch-to-diameter ratio of the cable to improve the flexibility of the cable. The shielding layer adopts an aluminum-plastic tape and copper wire braided composite structure to greatly improve its anti-interference ability and also plays a radial moisture-proof role. A special extrusion die is used for extruding the outer sheath. The cable core directly adopts a high-strength polyurethane sheath as the protective layer to improve the cable's torsion resistance.

[0020] In an optional embodiment: the conductive core 100 adopts a Category 6 conductor structure, with a cross-sectional area of ​​0.5 to 2.5 mm2, a circular geometric shape, and is composed of a number of soft round copper wires of the same diameter, which are regularly, concentrically, and successively twisted in different directions at different levels, or can be bundled. The conductive core 100 can be two-core, or a pair, two pairs, or more pairs of cores. The geometric shape is fixed, the stability is high, and the effect on the bendability of the cable is small.

[0021] A polypropylene thread 400 is installed between the conductive core 100 and the insulating layer 200. The polypropylene thread 400 is a 0.2 mm polypropylene thread to enhance its tensile strength.

[0022] In an optional embodiment: the insulating layer 200 is made of modified nitrile elastomer PVC insulating material, and the thickness of the insulating layer 200 is 0.3 to 0.6 mm. The material has good electrical insulation properties, high elongation and tensile strength, and is easy to process.

[0023] In an optional embodiment: the polyester film tape 300 is formed by winding a polyester film, with double layers of overlapping wrapping, and the overlapping rate cannot be less than 25%. The thickness of the polyester film tape 300 is 0.1 mm, which has the effect of tightening the conductive core 100.

[0024] In an optional embodiment: the shielding layer 500 is made of aluminum-plastic composite tape and copper wire weaving, the thickness of the shielding layer 500 is 0.2 to 0.4 mm, and the comprehensive shielding layer of multiple materials not only plays the role of electromagnetic shielding but also plays the role of radial moisture-proof.

[0025] In an optional embodiment: the outer protective layer 600 is made of polyurethane plastic, the thickness of the outer protective layer 600 is 0.3 to 0.6 mm, and a special extrusion die is used when an extruded outer sheath is used. The sheath material has high strength, softness, wear resistance and tear resistance.

[0026] In an optional embodiment: the number of conductive cores 100 inside the polyester film tape 300 needs to be set to an even number, the twisted pitch of the polyester film tape 300 is not greater than 8 times the outer diameter of the twisted wire group, and multiple polyester film tapes 300 are grouped into cables, and the cable pitch-to-diameter ratio is controlled to be no greater than 12 times of the polyester film tape 300. It should be noted that the overall softness and torsion resistance of the cable core are improved.

[0027] Working principle of this utility model:

[0028] The cable is composed of a conductive core, an insulating layer, a shielding layer, and an outer sheath. The conductive core of the cable is a soft structure conductor made of many soft round copper single wire bundles or concentric layered twisted wires. Polypropylene wires are introduced when the conductor bundles are twisted to improve the strength of the conductor. The insulation layer is an extruded soft nitrile elastomer insulation material. The cable core wires are twisted in pairs and then cabled to improve the softness of the cable core. The cable core is covered with a double-layer composite shielding layer that is overlapped and wrapped with aluminum-plastic composite tape and then woven for shielding. It not only plays the role of electromagnetic shielding but also plays the role of radial moisture-proofing. The outer sheath of the cable is made of polyurethane plastic, and a special extrusion die is used to extrude the outer sheath. This structure not only improves the product's torsion resistance and anti-interference ability, but also greatly enhances the tensile strength and safety and environmental protection performance, making the cable's overall performance more superior.

[0029] The structural design of the patented wire of the utility model focuses on torsion resistance and improved tensile strength, while taking into account the cable cost.

[0030] The main technical indicators achieved by the product:

[0031] The conductor structure should comply with the requirements of Category 6 soft structure conductors in GB / T 3956.

[0032] Insulation thickness and outer diameter measurement shall comply with the provisions of JB / T 8734-2016.

[0033] 3) The DC resistance of the conductor at 20°C shall comply with the requirements of GB / T 3956.

[0034] 4) Water immersion pressure test

[0035] The insulated wire core should be subjected to water immersion voltage test, and the wire should not be broken down.

[0036] 5) Mechanical properties test of insulation before and after aging

[0037] Mechanical properties test before aging

[0038] The minimum tensile strength is 15N / mm2 and the minimum elongation at break is 200%.

[0039] Mechanical properties test after aging

[0040] The change rate of tensile strength should not be greater than ±20%, and the change rate of elongation at break should not be greater than ±20%.

[0041] 6) Low temperature test

[0042] Low temperature bending test

[0043] The insulation should be subjected to low temperature bending test and the insulation should not crack.

[0044] Low temperature impact test

[0045] The insulation should be subjected to low temperature impact test and there should be no cracks in the insulation.

[0046] 7) Mechanical properties test of sheath before and after aging

[0047] Mechanical properties test before aging

[0048] The minimum tensile strength is 25N / mm2, and the minimum elongation at break is 300%.

[0049] Mechanical properties test after aging

[0050] The minimum tensile strength is 25N / mm2, and the elongation at break change rate should not be greater than ±20%.

[0051] 8) The cable is resistant to torsion. The cable can move back and forth in the horizontal direction while maintaining parallelism, and the core can reciprocate 6 million times.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel high-strength, torsion-resistant, and electromagnetic interference-resistant robot cable, comprising a conductive core (100), characterized in that: An insulating layer (200) is fixedly mounted on the conductive wire core (100); two conductive wire cores (100) are combined into a cable core; polyester film tapes (300) are fixedly mounted on the two insulating layers (200); a plurality of groups of polyester film tapes (300) form a whole cable core; a shielding layer (500) is fixedly mounted on the plurality of polyester film tapes (300); polypropylene yarns (400) are filled between the polyester film tapes (300) and the shielding layer (500); and an outer protective layer (600) is fixedly mounted on the shielding layer (500).

2. A novel high-strength, torsion-resistant, and electromagnetic interference-resistant robot cable according to claim 1, characterized in that: The conductive core (100) adopts a 6-type conductor structure and is formed by a plurality of soft round copper wires of the same diameter being regularly and concentrically twisted or bundled in different directions in succession. A polypropylene wire (400) is installed between the conductive core (100) and the insulating layer (200), and the polypropylene wire (400) is a 0.2 mm polypropylene wire.

3. A novel high-strength, torsion-resistant, and electromagnetic interference-resistant robot cable according to claim 1, characterized in that: The insulating layer (200) is made of modified nitrile elastomer PVC insulating material, and the thickness of the insulating layer (200) is 0.3 to 0.6 mm.

4. A novel high-strength, torsion-resistant, and electromagnetic interference-resistant robot cable according to claim 1, characterized in that: The polyester film tape (300) is formed by winding a polyester film, with double layers of overlapping wrapping, and the overlapping rate cannot be less than 25%. The thickness of the polyester film tape (300) is 0.1 mm.

5. The novel high-strength, torsion-resistant, and electromagnetic interference-resistant robot cable according to claim 1 is characterized in that: The shielding layer (500) is made of aluminum-plastic composite tape and copper wire braiding, and the thickness of the shielding layer (500) is between 0.2 and 0.4 mm.

6. The novel high-strength, torsion-resistant, and electromagnetic interference-resistant robot cable according to claim 1 is characterized in that: The outer protective layer (600) is made of polyurethane plastic, and the thickness of the outer protective layer (600) is 0.3 to 0.6 mm.

7. The novel high-strength, torsion-resistant, and electromagnetic interference-resistant robot cable according to claim 1 is characterized in that: The conductive wire cores (100) inside the polyester film tape (300) need to be set to an even number, the twist pitch of the polyester film tape (300) is not greater than 8 times the outer diameter of the twisted wire group, and multiple polyester film tapes (300) are grouped into cables, and the cable pitch-to-diameter ratio is controlled to be no greater than 12 times the polyester film tape (300).

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