A drag chain electrical cable

Abstract

The utility model discloses a kind of towed chain electric wires, the utility model discloses a kind of towed chain electric wires, including outer sheath layer, core and the round tube cladding of being set to the outside of core;Core includes several strands of stranded copper wire, and the outside of stranded copper wire is covered with protective layer;Round tube cladding is set to the outside of core and protective layer;Between core, inner stay is filled, and inner stay is contacted with round tube cladding and outer sheath layer, for supporting round tube cladding and outer sheath layer, maintain the round tubular structure of round tube cladding;The surface of inner stay is provided with several alternately arranged deformation gaps, and deformation gap occurs deformation when towed chain electric wire is bent, enhance the flexibility and bending resistance of towed chain electric wire.The utility model improves the flexibility and bending resistance of cable by setting inner stay and deformation gap, prolongs the service life of cable, and enhances the anti-electromagnetic interference ability of cable, and overall performance is superior to prior art.

Description

Technical Field

[0001] This utility model relates to the field of wire technology, specifically a drag chain wire. Background Technology

[0002] Drag chain cables are cables used in dynamic motion applications and are widely used in automated equipment, robots, CNC machine tools, and material handling systems. Drag chain cables need to withstand long-term dynamic bending, stretching, and torsion in complex working environments, therefore requiring high levels of flexibility, bending resistance, and fatigue resistance.

[0003] Existing drag chain cables typically consist of an outer sheath, an insulation layer, conductors, and a shielding layer. During cable bending, the outer sheath and insulation layer at the bend are often subjected to significant stress concentration, especially under repeated dynamic bending. This can easily lead to damage to the internal insulation layer and conductors, and may even result in conductor breakage or insulation damage, severely affecting the cable's lifespan and signal transmission stability.

[0004] Furthermore, existing cable carriers, when bent, are prone to deformation or collapse of their internal structure due to uneven stress, leading to decreased cable performance or malfunction. Additionally, some cables, lacking effective shielding, may be susceptible to external electromagnetic interference during prolonged use, resulting in unstable signal transmission or signal attenuation, thus affecting the normal operation of the system.

[0005] In view of this, we have studied and improved upon the existing problems to provide a drag chain cable, aiming to solve the current issues and improve its practical value through this technology. Utility Model Content

[0006] The present invention aims to solve the technical problems existing in the prior art or related technologies.

[0007] This utility model provides a drag chain cable, including an outer sheath, a wire core, and a circular tube sheath disposed outside the wire core. The wire core comprises several strands of stranded copper wire, and the stranded copper wire is covered with a protective layer. The circular tube sheath is sleeved on the outside of the wire core and the protective layer.

[0008] An inner support strip is filled between the wire cores. The inner support strip contacts the cylindrical sheath and the outer sheath, and supports the cylindrical sheath and the outer sheath to maintain the cylindrical structure of the cylindrical sheath. The surface of the inner support strip is provided with a number of alternating deformation gaps. The deformation gaps deform when the cable chain wire is bent, which enhances the flexibility and bending resistance of the cable chain wire.

[0009] The stranded copper wires are surrounded by a shielding strip made of electromagnetic shielding material, arranged in a spiral shape to resist electromagnetic interference and ensure stable signal transmission. The outer sheath is made of polyurethane or silicone rubber, which has wear resistance and fatigue resistance.

[0010] The cylindrical sheath is made of fluoroplastic or cross-linked polyethylene material. During the bending process of the drag chain wire, the cylindrical sheath disperses the bending stress through the deformation gap, thus maintaining the cylindrical structure.

[0011] The inner support strip is made of highly elastic silicone or foam material, and the deformation gap is rectangular or rhomboid in shape, and is arranged alternately along the length of the inner support strip.

[0012] The shielding strip is made of copper or aluminum foil and is arranged in a spiral pattern. The protective layer is made of silicone rubber or polyurethane, which provides flexible protection during bending to prevent damage to the wire core.

[0013] The outer sheath has a thickness of 0.5mm to 2mm, and the cylindrical sheath has a thickness of 0.3mm to 1.5mm. The protective layer, shielding strip, and stranded copper wire are manufactured using a co-extrusion molding process.

[0014] The beneficial effects achieved by this utility model are as follows:

[0015] 1. In this utility model, by setting inner support bars between the wire cores and opening alternating deformation gaps on the surface of the inner support bars, the deformation gaps can effectively absorb deformation stress during cable bending, reduce the concentrated effect of external force, improve the flexibility and bending resistance of the cable, and extend the service life of the cable. Through the supporting effect of the inner support bars on the cylindrical sheath and the outer sheath, the cylindrical structure of the cable is maintained during bending or dynamic movement, avoiding structural collapse or deformation due to uneven force or long-term bending.

[0016] 2. Through optimized structural design, this utility model significantly improves the flexibility, bending resistance, wear resistance, and anti-interference ability of the drag chain cable in dynamic environments. Its overall performance is superior to existing technologies, and it has high practical value and market competitiveness. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the wire core structure according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the inner support bar structure of one embodiment of the present invention.

[0020] Figure label:

[0021] 1. Outer sheath; 11. Round tube sheath; 2. Inner support strip; 21. Deformation gap; 3. Core wire; 31. Shielding strip; 32. Protective layer. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0023] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0024] The following is in conjunction with the appendix Figures 1-3 This invention describes a drag chain cable provided by some embodiments of the present invention.

[0025] This utility model provides a drag chain cable, including an outer sheath 1, a wire core 3, and a circular tube sheath 11 disposed outside the wire core 3.

[0026] The core 3 comprises several strands of stranded copper wire, and the stranded copper wire is covered with a protective layer 32. In this embodiment, the stranded copper wire is made of high-purity oxygen-free copper material, which has good conductivity and flexibility.

[0027] The protective layer 32 is made of silicone rubber, which has good wear resistance and flexibility. It can effectively protect the stranded copper wire during the bending process of the cable chain, preventing it from breaking or being damaged due to external forces.

[0028] The circular tube sheath 11 is fitted over the outside of the wire core 3 and the protective layer 32. In this embodiment, the circular tube sheath 11 is made of fluoroplastic material, which has corrosion resistance, high temperature resistance and high insulation performance, ensuring stable electrical performance even in complex environments.

[0029] The cores 3 are filled with inner support strips 2, which are in contact with the cylindrical sheath 11 and the outer sheath 1. The function of the inner support strips 2 is to support the cylindrical sheath 11 and the outer sheath 1, maintain the cylindrical structure of the cylindrical sheath 11, and prevent the drag chain wire from collapsing when bent.

[0030] The surface of the inner support bar 2 is provided with a plurality of alternating deformation gaps 21. In this embodiment, the deformation gaps 21 are rectangular in shape and are arranged alternately along the length of the inner support bar 2. The deformation gaps 21 deform when the cable is bent, absorbing the stress generated by the deformation and enhancing the flexibility and bending resistance of the cable chain.

[0031] The shielding strip 31 is disposed on the outside of the stranded copper wire. The shielding strip 31 is made of copper foil material and is arranged in a spiral shape. Through the spiral structure, the shielding strip 31 can maintain its integrity when the cable is bent, thereby effectively resisting electromagnetic interference and ensuring the stability of signal transmission.

[0032] The outer sheath 1 is made of polyurethane material, which has good wear resistance and fatigue resistance. In this embodiment, the thickness of the outer sheath 1 is 0.8 mm, and the thickness of the cylindrical sheath 11 is 0.5 mm.

[0033] During the manufacturing process, the protective layer 32 and the stranded copper wire are made by co-extrusion molding process to ensure that the protective layer 32 and the stranded copper wire are tightly bonded, thereby improving the overall flexibility and mechanical strength of the cable.

[0034] In another embodiment, the stranded copper wire is made of a highly flexible copper alloy material, which has higher bending resistance and tensile strength compared to the above embodiment.

[0035] The circular tube cladding 11 is made of cross-linked polyethylene (XLPE), which has excellent high temperature resistance and anti-aging properties, and is particularly suitable for complex working environments.

[0036] The inner support strip 2 is made of high-elasticity foam material, which has good cushioning and impact resistance.

[0037] The deformation gaps 21 are rhomboid in shape and are evenly and alternately arranged along the length of the inner support bars 2. This structure provides greater deformation space during cable bending, effectively reducing deformation stress and further enhancing the flexibility and durability of the cable.

[0038] The shielding strip 31 is made of aluminum foil and is arranged in a spiral pattern. While ensuring good shielding effect, it reduces the overall weight of the cable and improves the ease of construction.

[0039] The protective layer 32 is made of polyurethane material. Compared with the silicone rubber material in Example 1, polyurethane material has higher wear resistance and flexibility, and can maintain a stable protective effect under high-frequency dynamic bending.

[0040] The outer skin layer 1 has a thickness of 1.2 mm, and the cylindrical tube cladding layer 11 has a thickness of 0.7 mm.

[0041] During the manufacturing process, the protective layer 32 and the stranded copper wire are bonded together using a hot-pressing bonding process, which further enhances the bonding strength and overall structural stability.

[0042] In this embodiment, the core 3 is composed of 7 strands of twisted copper wire, and the twisted copper wire, the shielding strip 31 and the protective layer 32 are integrally formed by co-extrusion process.

[0043] The inner support strip 2 is made of silicone material, and the deformation gap 21 is arranged in an alternating rectangular and rhomboid pattern to further optimize flexibility and bending resistance.

[0044] The shielding strip 31 employs a composite structure of copper and aluminum foil to enhance shielding effectiveness and ensure stable signal transmission in complex electromagnetic environments. The protective layer 32 is made of silicone rubber, which effectively absorbs vibration and external impacts in bending and dynamic working environments, improving durability.

[0045] The outer sheath 1 is made of modified polyurethane material to enhance wear resistance and anti-aging properties. During manufacturing, the shielding tape 31 is arranged at intervals with the wire core 3 by spiral winding to ensure that the integrity of the shielding tape is maintained even when bent.

[0046] Working principle of this utility model:

[0047] During use, the cable chain can maintain flexibility and structural integrity when bent.

[0048] During the bending process, the deformation gap 21 can absorb the stress generated by external forces, reducing damage to the wire core 3;

[0049] The protective layer 32 forms a flexible buffer around the stranded copper wire to prevent the core 3 from breaking or fatigue damage under bending and dynamic working conditions.

[0050] The shielding strip 31 effectively resists electromagnetic interference and maintains the stability of signal transmission through its spiral winding structure.

[0051] The embodiments of this utility model enhance the flexibility and bending resistance of the wire by setting the inner support bar 2 and the deformation gap 21 structure. At the same time, by setting the shielding strip 31 and the protective layer 32, the stability of signal transmission and the service life of the wire are improved.

[0052] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A drag chain cable, characterized in that, The product comprises an outer sheath (1), a core (3), and a cylindrical sheath (11) disposed outside the core (3), characterized in that: The core (3) comprises several strands of twisted copper wire, and the outside of the twisted copper wire is covered with a protective layer (32). The circular tube sheath (11) is fitted over the outside of the wire core (3) and the protective layer (32); The cores (3) are filled with inner support strips (2), which are in contact with the tube sheath (11) and the outer sheath (1) to support the tube sheath (11) and the outer sheath (1) and maintain the tube structure of the tube sheath (11). The surface of the inner support bar (2) is provided with a number of alternating deformation gaps (21). The deformation gaps (21) deform when the drag chain wire is bent, thereby enhancing the flexibility and bending resistance of the drag chain wire. The stranded copper wire is provided with a shielding strip (31) on the outside. The shielding strip (31) is made of electromagnetic shielding material and is arranged in a spiral shape to resist electromagnetic interference and ensure stable signal transmission.

2. The drag chain cable according to claim 1, characterized in that: The outer skin layer (1) is made of polyurethane or silicone rubber and has wear resistance and fatigue resistance.

3. The drag chain cable according to claim 1, characterized in that: The cylindrical sheath (11) is made of fluoroplastic or cross-linked polyethylene material. The cylindrical sheath (11) disperses bending stress through the deformation gap (21) during the bending process of the drag chain wire, thus maintaining the cylindrical structure.

4. The drag chain cable according to claim 1, characterized in that: The inner support strip (2) is made of high-elasticity silicone or foam material.

5. The drag chain cable according to claim 1, characterized in that: The deformation gap (21) is rectangular or rhomboid in shape, and the deformation gap (21) is arranged alternately along the length direction of the inner support bar (2).

6. The drag chain cable according to claim 1, characterized in that: The shielding strip (31) is made of copper foil or aluminum foil and is arranged in a spiral pattern.

7. The drag chain cable according to claim 1, characterized in that: The protective layer (32) is made of silicone rubber or polyurethane material, and the protective layer (32) provides flexible protection during bending to prevent damage to the wire core (3).

8. The drag chain cable according to claim 1, characterized in that: The thickness of the outer skin layer (1) is 0.5 mm to 2 mm, and the thickness of the cylindrical tube layer (11) is 0.3 mm to 1.5 mm.

9. The drag chain cable according to claim 1, characterized in that: The stranded copper wire, shielding strip (31) and protective layer (32) are made by co-extrusion molding process.

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