Electric wire for super-long-stroke drag chain

Abstract

The utility model discloses a super-long-stroke electric wire for a drag chain, which comprises a plurality of core wires, an inner protective layer, a conductive cloth winding layer, a shielding layer and an outer protective layer, the centers of the plurality of core wires are filled with net-shaped foamed elastomer plastic, and the plurality of core wires are stranded on the same layer outside the net-shaped foamed elastomer plastic. Soft elastomer plastic forms an inner protective layer outside the stranded core wire in a pressurized extrusion mode, conductive cloth is wrapped outside the inner protective layer to form a conductive cloth winding layer, a shielding layer is formed outside the conductive cloth winding layer in a weaving mode, and a high-strength outer protective layer is tightly wrapped outside the shielding layer. The cable is high in extrusion resistance, impact resistance, distortion resistance, interference resistance and wear resistance, and is not easy to damage after being used for a long time.

Description

Technical Field

[0001] This utility model relates to an electrical wire, and more particularly to an electrical wire for ultra-long stroke cable chains. Background Technology

[0002] As industry becomes increasingly automated, and with the continuous upgrading of flexible automated production lines, multiple adjustable machine tools (mostly specialized machine tools) are gradually connected, forming production lines equipped with automated conveyor systems. The connection of multiple machine tools requires extremely long control cables, which can reach hundreds of meters depending on the number of machine tools connected. These cables, including both control and signal lines, are carried in cable chains. The bending resistance requirements for such long cable chains are completely different from those for ordinary short cable chains. Many ordinary cable chain cables will encounter various problems in such operating environments and cannot meet the requirements. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides an ultra-long stroke cable for cable carriers. This ultra-long stroke cable for cable carriers has strong resistance to compression, impact, torsion, interference, and wear, and is not easily damaged during long-term use.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an electric wire for ultra-long stroke cable chains, including core wires, inner sheath, conductive cloth winding layer, shielding layer and outer sheath. The center of several core wires is filled with a mesh-like foamed elastomer plastic. Several core wires are twisted together in the same layer on the outside of the mesh-like foamed elastomer plastic. The soft elastomer plastic is extruded under pressure to form an inner sheath on the outside of the twisted core wires. The conductive cloth is wrapped around the outside of the inner sheath to form a conductive cloth winding layer. A shielding layer is formed on the outside of the conductive cloth winding layer by weaving. A high-strength outer sheath is tightly wrapped around the outside of the shielding layer.

[0005] As a further improvement of this utility model, a Teflon wrapping layer is formed on the outside of the shielding layer by wrapping, and the outer protective layer covers the outside of the Teflon wrapping layer.

[0006] As a further improvement of this utility model, the outer protective layer includes a first high-strength polyurethane sheath layer extruded outside the Teflon tape layer, a protective mesh disposed outside the first high-strength polyurethane sheath layer, and a second high-strength polyurethane sheath layer extruded outside the protective mesh, wherein the first high-strength polyurethane sheath layer and the second high-strength polyurethane sheath layer are tightly bonded together.

[0007] As a further improvement of this utility model, the protective net is made of bulletproof wire through weaving.

[0008] As a further improvement of this utility model, the core wire includes a conductor and an insulating outer sheath. The conductor is formed by twisting several copper wires together with a small pitch, and a cross-linked thermosetting material is extruded under pressure on the outside of the conductor to form the insulating outer sheath of the core wire.

[0009] As a further improvement of this utility model, the copper wire of the power core is an alloy copper wire of 0.05mm to 0.10mm; the copper wire of the signal core is a silver-plated oxygen-free copper wire of 0.05mm to 0.08mm.

[0010] As a further improvement of this utility model, the core wire, which serves as the power core, is formed by multiple layers of twisting to create a conductor.

[0011] As a further improvement of this utility model, at least two core wires are first pre-twisted to form a pre-twisted layer cable structure, and multiple pre-twisted layer cable structures are twisted together in the same layer to form a cable.

[0012] As a further improvement of this utility model, the pre-twisted layer cable structure is composed of 4 core wires twisted together, 5 core wires twisted together, or other numbers of multiple core wires twisted together.

[0013] As a further improvement of this utility model, the conductive cloth is a high-strength non-woven fabric that has been electroplated.

[0014] The beneficial effects of this utility model are as follows: This utility model selects conductors of different materials for stranding according to the function of the core wires, effectively improving the bending resistance of the core wires and enhancing the signal transmission capability of the cable. This utility model also uses cross-linked thermosetting materials as the insulation sheath of the core wires, effectively improving the compression resistance of the cable core wires. During core wire pre-twisting, all core wires are structurally distributed in the same layer, avoiding mutual compression between core wires. Furthermore, a mesh-like foamed elastomer plastic is filled in the center of the core wires, ensuring the structural stability of the entire wire and providing elastic buffering when the center is compressed during bending. Using soft elastomer plastic as the inner sheath, its elasticity exerts pressure on all core wires, thereby stabilizing the overall wire arrangement and preventing mutual compression. The cable is positioned by electroplating non-woven fabric to form conductive cloth, which is wrapped around the outer side of the inner sheath to effectively improve the overall cable's anti-interference capability. Combined with the outer braided shielding layer, the anti-interference performance of the entire cable is further improved. Teflon tape can effectively prevent the shielding layer from unraveling while reducing wear and protecting the shielding layer from damage. The outer sheath is composed of a first high-strength polyurethane sheath layer, a protective mesh, and a second high-strength polyurethane sheath layer. The two high-strength polyurethane sheath layers are tightly bonded together and cannot be torn apart. The protective mesh woven from bulletproof wire in the middle can greatly improve the tensile and torsional resistance of the cable's outer sheath, protecting the cable from displacement and stretching during long-term movement with the robot, and protecting the entire cable from twisting and other adverse problems in ultra-long cable chains. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of the cable according to this utility model;

[0016] Figure 2 This is a schematic diagram of the core wire cross-section structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the conductor cross-section structure of the power core of this utility model. Detailed Implementation

[0018] Example: A cable for an ultra-long stroke cable chain includes a core wire 1, an inner sheath 2, a conductive cloth winding layer 3, a shielding layer 4, and an outer sheath. Several core wires 1 are filled with a mesh-like foamed elastomer plastic 5 in their center. Several core wires 1 are twisted together in the same layer on the outside of the mesh-like foamed elastomer plastic 5. The soft elastomer plastic 5 is extruded under pressure to form the inner sheath 2 on the outside of the twisted core wires 1. The conductive cloth is wrapped around the outside of the inner sheath 2 to form the conductive cloth winding layer 3. The conductive cloth winding layer 3 is woven to form a shielding layer 4 on the outside. The shielding layer 4 is tightly covered by a high-strength outer sheath.

[0019] During the cabling process, a mesh-like foamed elastomer plastic 5 is first filled into the center of the core wire 1. Then, the core wires 1 are twisted together in the same layer. The mesh-like foamed elastomer plastic 5 ensures the structural stability of the entire cable and provides elastic cushioning when the center is compressed during bending. After the entire cable is twisted, a special soft elastomer plastic 5 inner sheath 2 with high hardness and strength is extruded under pressure. This inner sheath 2 stabilizes the arrangement of all the core wires 1 through pressure, preventing misalignment. Wrapping a conductive cloth wrapping layer 3 around the inner sheath 2 effectively improves the cable's anti-interference capability. Braided shielding on the outer layer of the conductive cloth further enhances the cable's anti-interference capability. The outer sheath is ideally made of wear-resistant, high-strength materials to protect the internal structure.

[0020] The outer side of the shielding layer 4 is formed by wrapping a layer of Teflon tape, and the outer protective layer covers the outside of the Teflon tape layer. Wrapping a layer of Teflon tape around the shielding layer 4 can prevent the shielding layer 4 from spreading out, reduce wear, and protect the shielding layer 4 from damage.

[0021] The outer protective layer includes a first high-strength polyurethane sheath layer 7 extruded outside the Teflon tape layer, a protective mesh 8 disposed outside the first high-strength polyurethane sheath layer 7, and a second high-strength polyurethane sheath layer 9 extruded outside the protective mesh 8. The first high-strength polyurethane sheath layer 7 and the second high-strength polyurethane sheath layer 9 are tightly bonded together.

[0022] First, a high-strength polyurethane sheath layer 7 is extruded outside the Teflon tape. A protective mesh 8 is then woven from bulletproof wire outside this first high-strength polyurethane sheath layer 7, followed by the extrusion of a second high-strength polyurethane sheath layer 9. The two high-strength polyurethane sheath layers are tightly bonded together and cannot be torn apart. This outer sheath greatly enhances the tensile and torsional resistance of the cable's outer sheath, protecting the sheath from displacement and stretching during prolonged movement with the robot, and preventing twisting or other adverse problems along the entire cable in ultra-long cable chains.

[0023] The protective net 8 is made of bulletproof wire woven together.

[0024] The core wire 1 includes a conductor 11 and an insulating sheath 12. The conductor 11 is formed by stranding several copper wires 111 together with a small pitch. A cross-linked thermosetting material is extruded under pressure onto the outside of the conductor 11 to form the insulating sheath 12 of the core wire 1. The insulating sheath 12 uses a special cross-linked thermosetting material, which has higher strength and compression resistance compared to thermoplastic elastomers. In cables with ultra-long drag chains, the internal core wire 1 is subjected to significant compressive stress. Using a special thermosetting material can effectively improve the compression resistance of the cable core wire 1.

[0025] The core wire 1, serving as the power core, uses alloy copper wire 111 with a diameter of 0.05mm to 0.10mm; the core wire 1, serving as the signal core, uses silver-plated oxygen-free copper wire 111 with a diameter of 0.05mm to 0.08mm. The power core in conductor 11 uses extremely fine alloy copper wire 111, which has extremely high tensile strength. During bending in long cable carriers, this alloy copper wire 111 effectively increases the stress the cable can withstand, preventing conductor 11 from breaking. The signal core uses silver-plated oxygen-free copper wire 111. Due to the very long cable, silver plating effectively improves the cable's signal transmission capability. The silver-plated oxygen-free copper wire 111 is stranded with a very small pitch, effectively improving the bending resistance of the cable carrier.

[0026] The core wire 1, serving as the power core, has copper wires 111 formed by multiple layers of stranding to create the conductor 11. This multiple layering of the conductor 11 effectively enhances its resistance to bending in cable chains. Furthermore, it employs an extremely small stranding pitch. This construction improves the cable's bending resistance in long cable chains.

[0027] At least two core wires 1 are pre-twisted to form a pre-twisted layer cable structure 6, and multiple pre-twisted layer cable structures 6 are then twisted together in the same layer to form a cable. For this type of ultra-long-stroke drag chain cable, if the cable core wires 1 are layered in the cabling structure, the inner and outer layers of core wires 1 may squeeze each other, potentially causing core wire displacement. Therefore, all core wires 1 need to be structurally distributed in the same layer. Thus, before cabling, each core wire 1 is pre-twisted purposefully according to its quantity and size. Ultimately, this ensures that all core wires 1 are in the same layer, avoiding mutual squeezing between them.

[0028] The pre-twisted layer cable structure consists of 4 core wires twisted together, 5 core wires twisted together, or other numbers of multiple core wires twisted together.

[0029] The conductive fabric is a high-strength non-woven fabric that has been electroplated. A layer of high-strength non-woven fabric, which has also been electroplated, is wrapped around the inner sheath to form a conductive layer. This effectively improves the overall cable's anti-interference capability. Because the cable is very long, it is likely to be subject to electromagnetic interference from the surrounding environment during signal transmission; wrapping it with a conductive layer effectively enhances its anti-interference ability.

Claims

1. A cable for an ultra-long stroke cable chain, characterized in that: The device includes a core wire (1), an inner sheath (2), a conductive cloth winding layer (3), a shielding layer (4), and an outer sheath. The center of several core wires is filled with a mesh-like foamed elastomeric plastic (5). Several core wires are twisted together in the same layer on the outside of the mesh-like foamed elastomeric plastic. The soft elastomeric plastic is extruded under pressure to form an inner sheath on the outside of the twisted core wires. The conductive cloth is wrapped around the outside of the inner sheath to form a conductive cloth winding layer. The conductive cloth winding layer is woven to form a shielding layer. The shielding layer is tightly covered with a high-strength outer sheath.

2. The cable for ultra-long stroke cable chains according to claim 1, characterized in that: The outer side of the shielding layer is formed by wrapping a layer of Teflon tape, and the outer protective layer covers the outside of the Teflon tape layer.

3. The cable for ultra-long stroke cable chains according to claim 2, characterized in that: The outer protective layer includes a first high-strength polyurethane sheath layer (7) extruded outside the Teflon tape layer, a protective mesh (8) disposed outside the first high-strength polyurethane sheath layer, and a second high-strength polyurethane sheath layer (9) extruded outside the protective mesh layer, wherein the first high-strength polyurethane sheath layer and the second high-strength polyurethane sheath layer are tightly bonded together.

4. The cable for ultra-long stroke cable chains according to claim 3, characterized in that: The protective net is made of bulletproof wire woven together.

5. The cable for ultra-long stroke cable chains according to claim 1, characterized in that: The core wire includes a conductor (11) and an insulating sheath (12). The conductor is formed by twisting several copper wires (111) together with a small pitch. The cross-linked thermosetting material is extruded under pressure on the outside of the conductor to form the insulating sheath of the core wire.

6. The cable for ultra-long stroke cable chains according to claim 5, characterized in that: The core wire used as the power core has an alloy copper wire of 0.05mm to 0.10mm; the core wire used as the signal core has a silver-plated oxygen-free copper wire of 0.05mm to 0.08mm.

7. The cable for ultra-long stroke cable chains according to claim 6, characterized in that: The core wire, which serves as the power core, is formed by multiple layers of copper wire twisting to create a conductor.

8. The cable for ultra-long stroke cable chains according to claim 1 or 5, characterized in that: At least two core wires are pre-twisted to form a pre-twisted layer cable structure (6), and multiple pre-twisted layer cable structures are twisted together in the same layer to form a cable.

9. The cable for ultra-long stroke cable chains according to claim 8, characterized in that: The pre-twisted layer cable structure consists of 4 stranded cores, 5 stranded cores, or other numbers of stranded cores.

10. The cable for ultra-long stroke cable chains according to claim 1, characterized in that: The conductive cloth is a high-strength non-woven fabric that has been electroplated.

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