Dynamic network Category 6 + cable for mechanical arm

Abstract

The utility model relates to a cable, and specifically relates to a dynamic network Category 6 cable for a mechanical arm. The utility model aims to provide the dynamic network category 6 + cable for the mechanical arm, and the cable still has the advantages of low attenuation, high transmission rate and high-frequency support under the working condition of high-intensity movement, and has the characteristics of high flexibility, torsion resistance, tensile resistance and stable signal transmission. According to the technical scheme, the dynamic network Category 6 + cable for the mechanical arm is characterized by comprising a cable core, and an outer shielding layer, a belting layer and an outer protection layer which are sequentially coated outside the cable core from inside to outside, the cable core comprises a plurality of twisted pairs which are arranged in parallel along the length direction of the cable and are coated with inner shielding layers; the twisted pair wires adopt different twist pitches so as to reduce electromagnetic crosstalk between the twisted pair wires. The twisted pair wire comprises two twisted wires, and each wire comprises a conductor, and a first insulating layer, a second insulating layer and a third insulating layer which are sequentially coated on the conductor from inside to outside.

Description

Technical Field

[0001] This utility model relates to a cable, specifically a dynamic network Category 6A cable for robotic arms. Background Technology

[0002] With the rapid development of industrial automation technology, dynamic data transmission systems are facing unprecedentedly stringent performance challenges. As the core nerve center of intelligent equipment, the dynamic network Category 6 cable for robotic arms must not only meet traditional electrical performance and transmission specifications, but also the requirements for stable signal transmission under high-intensity motion and high-frequency bending conditions. Its design level directly affects technological breakthroughs in core performance aspects such as the robotic arm's motion accuracy, service life, and reliability.

[0003] These cables typically employ multi-strand stranded conductors and composite insulation materials, combined with precision stranding technology and multi-layer shielding to suppress electromagnetic interference (EMI), achieving high tensile strength and fatigue resistance while ensuring conductor flexibility. Their structural design must also consider flame retardancy, oil corrosion resistance, and adaptability to oil contamination and coolant environments in industrial settings. However, traditional Category 6 cables used in static data center environments cannot guarantee stable data transmission performance in dynamic scenarios such as cable chain reciprocating motion and robotic arm twisting and bending.

[0004] Therefore, designing a dynamic network Category 6A cable for robotic arms is of great significance. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings in the above-mentioned background technology and provide a dynamic network Category 6A cable for robotic arms. This cable still has the advantages of low attenuation, high transmission rate, and high frequency support in high-intensity motion conditions, and also has the characteristics of high flexibility, torsion and tensile resistance, and stable signal transmission.

[0006] The technical solution of this utility model is:

[0007] A dynamic network Category 6A cable for robotic arms is characterized by comprising a cable core and an outer shielding layer, a wrapping layer, and an outer sheath that are sequentially wrapped around the cable core from the inside out; the cable core comprises several twisted pairs arranged parallel to each other along the cable length and covered by an inner shielding layer; each twisted pair uses a different twist pitch to reduce electromagnetic crosstalk between the twisted pairs.

[0008] The twisted pair includes two twisted wires, each wire including a conductor and a first insulation layer, a second insulation layer, and a third insulation layer sequentially wrapped around the conductor from the inside out.

[0009] The conductor is composed of multiple strands of tin-plated copper wires twisted together.

[0010] The first insulating layer is a low-density polyethylene layer; the second insulating layer is a foamed polyethylene layer; and the third insulating layer is a high-density polyethylene layer.

[0011] The inner shielding layer is a wrapping layer of aluminum-plastic composite tape; the thickness of the inner shielding layer is 0.065mm to 0.070mm, of which the thickness of the aluminum layer is 0.40μm to 0.45μm.

[0012] The outer shielding layer is a tin-plated copper wire braided layer, wherein the diameter of a single tin-plated copper wire is 0.08mm to 0.10mm.

[0013] The wrapping layer is a thin non-woven fabric wrapping layer.

[0014] The outer protective layer is a polyester-type thermoplastic polyurethane outer protective layer; the thickness of the outer protective layer is 0.80mm to 1.00mm.

[0015] The beneficial effects of this utility model are:

[0016] 1. The conductor of this utility model adopts a multi-strand stranded tin-plated copper wire structure, which improves the roundness of the conductor, enhances the flexibility of the conductor, and improves its torsional and tensile strength.

[0017] 2. The conductor insulation layer of this utility model adopts a three-layer co-extruded physical foam insulation structure, which reduces the dielectric constant of the cable core and the outer diameter of the cable core, while also enhancing the transmission performance and flexibility of the cable core.

[0018] 3. The shielding layer of this utility model adopts a composite structure (inner shielding layer plus outer shielding layer), which has the characteristics of high crosstalk ratio, low attenuation, high transmission rate and high frequency support, improving the electromagnetic interference resistance and shielding efficiency of the cable, and ensuring stable signal transmission and strong environmental adaptability. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the twisted pair wire according to an embodiment of the present invention.

[0021] Figure label:

[0022] Conductor 1, First insulating layer 2, Second insulating layer 3, Third insulating layer 4, Inner shielding layer 5, Outer shielding layer 6, Wrapping tape layer 7, Outer sheath 8. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1As shown, a dynamic network Category 6 cable for robotic arms includes a cable core, an outer shielding layer 6, a wrapping layer 7, and an outer sheath 8. The cable core is covered by the outer shielding layer, the wrapping layer, and the outer sheath sequentially from the inside out.

[0025] like Figure 2 As shown, the cable core includes several twisted pairs. Each twisted pair is covered with an inner shielding layer 5. The several twisted pairs are arranged in parallel cylindrical shape along the length of the cable, which increases the overall roundness of the cable and improves its mechanical strength.

[0026] The twisted pair includes two twisted conductors; each conductor includes a conductor 1, a first insulating layer 2, a second insulating layer 3, and a third insulating layer 4. The conductor is covered by the first insulating layer, the second insulating layer, and the third insulating layer from the inside out.

[0027] The conductor is composed of multiple strands of tin-plated copper wires twisted together. This conductor is produced using a multi-strand stranding process, where several copper alloy wires are twisted into a single conductor. Referring to GB / T4910, the conductor is 24AWG (single wire outer diameter 0.09mm), the plating thickness is ≥0.6μm, and the elongation is controlled within the range of 10%–15%. Furthermore, by employing a compressed stranding process, the outer diameter of the conductor is reduced by at least 0.3mm–0.4mm compared to conventional conductors. This reduces the weight of the finished cable and improves the conductor's roundness, thereby enhancing the signal transmission stability. Additionally, each pair of strands in the cable uses a different twist pitch (preferred pitches are 24mm, 29mm, 32mm, and 26mm), and each pair is 100% untwisted to achieve balanced transmission and cancel electromagnetic interference. Through this structural design, crosstalk between wire pairs can be reduced, and the signal transmission of the cable can be optimized through stranding, shielding, and impedance design.

[0028] The first insulation layer is a low-density polyethylene layer, the second insulation layer is a foamed polyethylene layer, and the third insulation layer is a high-density polyethylene layer. This cable employs a three-layer co-extrusion technology using physical foaming of polyethylene, simultaneously extruding low-density polyethylene, foamed polyethylene, and high-density polyethylene to create the layered first, second, and third insulation layers.

[0029] The first insulating layer is made of solid low-density polyethylene and is tightly attached to the conductor to increase the adhesion of the first insulating layer to the conductor.

[0030] The second insulating layer is a foamed polyethylene layer, which not only possesses excellent insulation properties, supports high-frequency signal transmission, enhances anti-electromagnetic interference effects, and ensures the stability of power transmission and encoder signal transmission, but also has high flexibility. Furthermore, the foamed polyethylene layer is produced by injecting gas into the foamed polyethylene using the principle of physical nitrogen foaming, followed by high-speed, high-pressure extrusion of the foamed polyethylene.

[0031] The third insulating layer is made of high-density polyethylene and covers the second insulating layer. The overall thickness of the three insulating layers is preferably 0.35 mm, the thickness of the first insulating layer is preferably 0.02 mm, the thickness of the second insulating layer is preferably 0.28 mm, and the thickness of the third insulating layer is preferably 0.05 mm. Three different pigments can be added to the three insulating layers for color differentiation.

[0032] This cable achieves lower dielectric constant and loss, while improving impedance stability, mechanical strength, and durability through a three-layer co-extrusion technology using polyethylene physical foaming. The microporous structure and layered design enable triple optimization of signal transmission, mechanical performance, and cost.

[0033] The inner shielding layer is an aluminum-plastic composite tape wrapping layer, manufactured using a split-shielding structure and synchronous cabling process. This ensures both the stability of the cable structure and the stability of its transmission performance. The inner shielding layer thickness is 0.065mm to 0.070mm, with the aluminum layer thickness ranging from 0.040mm to 0.045mm, and the overlap rate is controlled at 45% to 50%. This higher overlap improves the cable's electromagnetic interference resistance, meeting the requirements for use in environments with strong interference.

[0034] The outer shielding layer is a tinned copper wire braided layer, wherein the diameter of a single tinned copper wire is 0.08mm to 0.10mm, and the braiding density is greater than 85%. The inner shielding layer and the outer shielding layer are combined to cover the cable core, further improving the cable's shielding efficiency and giving the cable excellent electromagnetic interference resistance.

[0035] The wrapping layer is a thin non-woven fabric wrapping layer. It is processed by wrapping. Through the winding process, the non-woven fabric can fix the relative position of the internal cable cores, prevent loosening or displacement, and improve the overall structural stability.

[0036] The outer sheath is a polyester-based thermoplastic polyurethane outer sheath with a thickness of 0.80mm to 1.0mm. This material possesses superior wear resistance and mechanical strength, more than 10 times that of PVC, capable of withstanding high-frequency friction within the robotic arm's cable chain, and exhibiting adaptability to extreme environments. The material has a temperature resistance range of -40℃ to 90℃; it is resistant to chemical corrosion (such as IRM902 oil, coolants, and weak acids and alkalis); it exhibits high flexibility and excellent fatigue resistance; it has a small bending radius: up to 5 times the cable's outer diameter in dynamic applications; it has a low memory effect: it does not easily deform after repeated bending, maintaining the cable's resilience; and it allows for lightweight and thin-walled designs, with a relative density of only 1.2 to 1.3 g / cm³. 3 It is lighter than TPE and still provides sufficient protection with a 30% reduction in sheath thickness.

[0037] This robotic arm utilizes a dynamic network Cat6e cable that maintains stable signal transmission performance even under high motion intensity and repeated bending conditions, meeting the stringent requirements of dynamic data cable design and improving the robotic arm's accuracy, lifespan, and reliability. The robotic arm equipped with this cable exhibits stable signal transmission performance at bending radii of 5D–10D, speeds of 3 m / s, and accelerations of 3 m / s². 2 Under a 5-meter travel length, it can effectively perform more than 5 million cable chain movements. During this period, the cable will not break and will maintain a stable signal transmission.

[0038] This robotic arm utilizes dynamic network Cat6e cables to achieve a fusion of ultra-high flexibility, mechanical durability, signal transmission stability, and environmental adaptability, while also offering advantages in ease of installation and maintenance, thus becoming the "nerve vessels" of intelligent equipment. It can be primarily applied to products such as industrial robot joints, medical robots, autonomous driving testing equipment, and CNC machine tool cable chains.

[0039] All materials described in this invention can be purchased externally.

[0040] The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

Claims

1. A dynamic network Category 6A cable for robotic arms, characterized in that: It includes a cable core and an outer shielding layer (6), a wrapping layer (7), and an outer sheath (8) that are sequentially wrapped around the outside of the cable core from the inside out; the cable core includes several twisted pairs arranged parallel to each other along the length of the cable and covered with an inner shielding layer (5); each twisted pair uses a different twist pitch to reduce electromagnetic crosstalk between the twisted pairs. The twisted pair includes two twisted wires, each wire including a conductor (1) and a first insulating layer (2), a second insulating layer (3), and a third insulating layer (4) sequentially wrapped around the conductor from the inside out.

2. The dynamic network Category 6a cable for robotic arms according to claim 1, characterized in that: The conductor is composed of multiple strands of tin-plated copper wires twisted together.

3. The dynamic network Category 6a cable for robotic arms according to claim 2, characterized in that: The first insulating layer is a low-density polyethylene layer; the second insulating layer is a foamed polyethylene layer; and the third insulating layer is a high-density polyethylene layer.

4. The dynamic network Category 6A cable for robotic arms according to claim 3, characterized in that: The inner shielding layer is a wrapping layer of aluminum-plastic composite tape; the thickness of the inner shielding layer is 0.065mm to 0.070mm, of which the thickness of the aluminum layer is 0.040mm to 0.045mm.

5. A dynamic network Category 6A cable for robotic arms according to claim 4, characterized in that: The outer shielding layer is a tin-plated copper wire braided layer, wherein the diameter of a single tin-plated copper wire is 0.08mm to 0.10mm.

6. The dynamic network Category 6A cable for robotic arms according to claim 5, characterized in that: The wrapping layer is a thin non-woven fabric wrapping layer.

7. A dynamic network Category 6A cable for robotic arms according to claim 6, characterized in that: The outer protective layer is a polyester-type thermoplastic polyurethane outer protective layer; the thickness of the outer protective layer is 0.80mm to 1.00mm.

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