Cabling roundness reinforced steel wire braided armored multi-core cable

Abstract

The utility model discloses a cabling roundness strengthening type steel wire braided armored multi-core cable, which comprises a power supply wire core, a communication wire core, a coaxial wire core, an audio wire core and six silicon rubber filling core strips which are twisted to form a cable core, the power supply wire core and the communication wire core have the same diameter and are larger than the outer diameter of the coaxial wire core, and the outer diameter of the coaxial wire core is larger than the outer diameter of the audio wire core. A first silicone rubber filling core strip is arranged in a gap among the power line core, the communication line core and the coaxial line core, a second silicone rubber filling core strip is arranged in a gap among the power line core, the communication line core and the audio line core, and a third silicone rubber filling core strip is arranged between every two side gaps of all the line cores. The outer diameters of the first, second and third silicone rubber filling core strips are sequentially increased, and the cable core is sequentially coated with a polyester fiber plain woven fabric wrapping layer, an inner sheath layer, an armor layer and an outer sheath layer. According to the multi-core cable, the cable core structure is optimized, the cabling roundness can be improved, the lateral pressure in a bending state can be better borne, and the bending resistance is better.

Description

Technical Field

[0001] The present application relates to the technical field of cables, and particularly relates to a multi-core cable with a roundness-enhanced steel wire braided armor for cabling. Background Art

[0002] On an automated industrial production line, multi-core communication cables are generally used in robots and mobile drive systems, etc. However, when all power cores, communication cores, coaxial cores, audio cores, etc. are twisted together in the cable core, due to the different outer diameters of each core and unreasonable filling, the cable is prone to looseness after cabling, greatly affecting the roundness of the cabling. And the roundness of the cabling seriously affects the overall roundness of the cable, reduces the overall bending resistance of the cable, is prone to wire breakage and filament breakage phenomena, affects the electrical characteristics of the cable, and has poor durability. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present application is to provide a multi-core cable with a roundness-enhanced steel wire braided armor for cabling, which optimizes the cable core structure, helps to improve the structural stability of the cable core and the roundness of the cabling, can better withstand the lateral pressure under the bending state, has better flexibility and bending resistance, and is durable in application.

[0004] The above technical problems are solved by the following technical solutions in the present application.

[0005] A multi-core cable with a roundness-enhanced steel wire braided armor for cabling, including a power core, a communication core, a coaxial core, and an audio core arranged in a cross shape and jointly twisted with six silicone rubber filling core strips to form a cable core. The coaxial core and the audio core are arranged at intervals through the power core and the communication core. The power core and the communication core have the same diameter and are larger than the outer diameter of the coaxial core. The outer diameter of the coaxial core is larger than the outer diameter of the audio core. A first silicone rubber filling core strip is arranged in the gap between the power core, the communication core, and the coaxial core. A second silicone rubber filling core strip is arranged in the gap between the power core, the communication core, and the audio core. Third silicone rubber filling core strips are respectively arranged in the two-side gaps between the power core, the communication core, the coaxial core, and the audio core. The outer diameters of the first silicone rubber filling core strip, the second silicone rubber filling core strip, and the third silicone rubber filling core strip increase in sequence. The cable core is externally coated with a polyester fiber plain woven fabric wrapping layer, an irradiated cross-linked high-density polyethylene inner sheath layer, a steel wire braided armor layer, and an irradiated cross-linked high-density polyethylene outer sheath layer.

[0006] Preferably, the outer diameter of the coaxial core is 65% to 90% of the outer diameter of the power core, and the outer diameter of the audio core is 70% to 80% of the outer diameter of the coaxial core.

[0007] Preferably, the power core includes three power lines twisted around a central filling core material to form a power core body, and the power core body is externally coated with a low-smoke and halogen-free polyolefin sheath layer.

[0008] Preferably, the power cord includes a power conductor and an XLPE insulating layer.

[0009] Preferably, the communication core includes four pairs of twisted cores separated by a cross-shaped isolation core frame and jointly twisted to form a communication core body. An inner sheath layer of polyurethane elastomer, a copper-plastic composite wrapped shielding layer, and an outer sheath layer of low-smoke and halogen-free polyolefin are sequentially coated on the outside of the communication core body.

[0010] Preferably, each pair of twisted cores is composed of two insulated wire pairs twisted together, and each insulated wire includes a solid copper conductor and a PFA insulating layer.

[0011] Preferably, the coaxial core includes a stainless steel single-wire conductor. On the outer surface of the stainless steel single-wire conductor, a tinned copper wire mesh conductor layer is formed by braiding and pressing a plurality of tinned copper single wires. An FEP inner insulating layer, a sector-shaped tinned copper wire wound shielding layer, and an FEP extruded sheath layer are sequentially coated on the outside of the tinned copper wire mesh conductor layer.

[0012] Preferably, the audio core includes two audio wires and two polyethylene resin filling cores jointly twisted to form an audio core body. An anti-friction layer wrapped with PTFE semi-oriented tape, an aluminum foil shielding layer, and an irradiated cross-linked low-density polyethylene sheath layer are sequentially coated on the outside of the audio core body. A tinned oxygen-free copper drainage line is provided between the anti-friction layer wrapped with PTFE semi-oriented tape and the aluminum foil shielding layer.

[0013] Preferably, each audio wire includes a tinned oxygen-free copper conductor and an irradiated cross-linked low-density polyethylene insulating layer.

[0014] Preferably, the polyester fiber plain woven fabric wrapping layer is a polyester fiber plain woven fabric overlapping wrapping structure with a thickness of 0.05 to 0.2 mm.

[0015] Advantages of the present application:

[0016] 1. By combining the outer diameter size ratios of the power core, communication core, coaxial core, and audio core, six silicone rubber filling core strips with different outer diameter sizes are added at specific gap positions between the cores inside the cable core, and then a polyester fiber plain woven fabric wrapping layer is coated to form a cable, greatly improving the roundness of the cable formation. The cable core structure is balanced and stable, with higher mechanical strength, capable of better withstanding the lateral pressure in the bent state, helping to improve the overall flexibility and bending resistance of the cable, reducing the local load of each core, improving the effective protection of each core, and enabling durable application.

[0017] 2. By adding two polyethylene resin filling cores and two audio wires to be twisted together in the audio core, it is beneficial to ensure the roundness of the cross-section of the audio core body, better structural strength, balanced and stable structure, reducing the lateral pressure on the audio wires, inhibiting conductor breakage, ensuring the stability of signal transmission, and improving the electrical characteristics of the cable.

[0018] 3. The coaxial cable core uses a stainless steel single wire conductor as the inner core, which helps to improve the mechanical strength and bending resistance of the inner conductor. A tinned copper single wire braid is formed on the outer surface of the stainless steel single wire conductor and tightly pressed to form a tinned copper mesh conductor layer. The tinned copper mesh conductor layer with a close structure has better flexibility and bending resistance, will not become loose, reduces the occurrence of broken wires, and has better durability and application performance.

[0019] 4. The communication cable core separates and arranges four twisted pair cores through a cross-shaped isolation core frame to keep the structure of the communication cable core body balanced, and wraps a polyurethane elastomer insulation layer outside the communication cable core body to keep the structure of the communication cable core body round and have high mechanical strength. The polyurethane elastomer has good physical and mechanical properties, slows down the lateral pressure borne by each twisted pair core, prevents the occurrence of broken wires, ensures stable electrical characteristics, and has better durability. Brief Description of the Drawings

[0020] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the present application.

[0021] Description of the Reference Numerals in the Drawings:

[0022] 1 - Power cable core, 2 - Communication cable core, 3 - Coaxial cable core, 4 - Audio cable core, 5 - First silicone rubber filling core strip, 6 - Second silicone rubber filling core strip, 7 - Third silicone rubber filling core strip, 8 - Polyester fiber plain woven fabric wrapping layer, 9 - Irradiation cross-linked high-density polyethylene inner sheath layer, 10 - Steel wire braided armor layer, 11 - Irradiation cross-linked high-density polyethylene outer sheath layer, 12 - Power cable, 13 - Low-smoke and halogen-free polyolefin sheath layer, 14 - Power conductor, 15 - XLPE insulation layer, 16 - Twisted pair core, 17 - Cross-shaped isolation core frame, 18 - Polyurethane elastomer inner sheath layer, 19 - Copper-plastic composite wrapping shielding layer, 20 - Low-smoke and halogen-free polyolefin outer sheath layer, 21 - Insulated wire, 22 - Solid copper conductor, 23 - PFA insulation layer, 24 - Tinned copper mesh conductor layer, 25 - FEP inner insulation layer, 26 - Fan-shaped tinned copper wire winding shielding layer, 27 - FEP extruded sheath layer, 28 - Audio cable, 29 - Polyethylene resin filling core, 30 - PTFE semi-oriented tape wrapping anti-friction layer, 31 - Aluminum foil shielding layer, 32 - Irradiation cross-linked low-density polyethylene sheath layer, 33 - Tinned oxygen-free copper drainage wire, 34 - Tinned oxygen-free copper conductor, 35 - Irradiation cross-linked low-density polyethylene insulation layer, 36 - Stainless steel single wire conductor. Detailed Embodiments

[0023] The terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application. The following will describe the embodiments of the present application in detail with reference to the drawings.

[0024] See Figure 1, the cable-roundness enhanced steel wire braided armored multi-core cable according to the embodiment of the present application includes a power line core 1, a communication line core 2, a coaxial line core 3, and an audio line core 4 arranged in a cross shape and jointly stranded with six silicone rubber filling core strips to form a cable core. The coaxial line core 3 and the audio line core 4 are arranged at intervals through the power line core 1 and the communication line core 2. The power line core 1 and the communication line core 2 have the same diameter and are larger than the outer diameter of the coaxial line core 3, and the outer diameter of the coaxial line core 3 is larger than the outer diameter of the audio line core 4. Further, the outer diameter of the coaxial line core 3 is 65% to 90% of the outer diameter of the power line core 1, and the outer diameter of the audio line core 4 is 70% to 80% of the outer diameter of the coaxial line core 3. A first silicone rubber filling core strip 5 is arranged in the gap between the power line core 1, the communication line core 2, and the coaxial line core 3. A second silicone rubber filling core strip 6 is arranged in the gap between the power line core 1, the communication line core 2, and the audio line core 4. Third silicone rubber filling core strips 7 are respectively arranged in the gaps between the two sides of the power line core 1, the communication line core 2, the coaxial line core 3, and the audio line core 4. The outer diameters of the first silicone rubber filling core strip 5, the second silicone rubber filling core strip 6, and the third silicone rubber filling core strip 7 increase in sequence.

[0025] In one embodiment, the power line core 1 includes three power lines 12 stranded around a central filling core material to form a power line core body, and a low-smoke and halogen-free polyolefin sheath layer 13 is coated outside the power line core body. The power line 12 includes a power conductor 14 and an XLPE insulation layer 15. In one embodiment, the communication line core 2 includes four twisted pair cores 16 separated and arranged by a cross-shaped isolation core frame 17 and jointly stranded to form a communication line core body. The communication line core body is sequentially coated with a polyurethane elastomer inner sheath layer 18, a copper-plastic composite wrapped shielding layer 19, and a low-smoke and halogen-free polyolefin outer sheath layer 20. The twisted pair core 16 is composed of two insulated wires 21 twisted together. The insulated wire 21 includes a solid copper conductor 22 and a PFA insulation layer 23. In one embodiment, the coaxial line core 3 includes a stainless steel single wire conductor 36. On the outer surface of the stainless steel single wire conductor 36, a plurality of tinned copper single wires are braided and tightly pressed to form a tinned copper mesh conductor layer 24. The tinned copper mesh conductor layer 24 is sequentially coated with an FEP inner insulation layer 25, a fan-shaped tinned copper wire winding shielding layer 26, and an FEP extrusion sheath layer 27. In one embodiment, the audio line core 4 includes two audio lines 28 and two polyethylene resin filling cores 29 jointly stranded to form an audio line core body. The audio line core body is sequentially coated with a PTFE semi-oriented tape winding anti-friction layer 30, an aluminum foil shielding layer 31, and an irradiated cross-linked low-density polyethylene sheath layer 32. A tinned oxygen-free copper drainage line 33 is arranged between the PTFE semi-oriented tape winding anti-friction layer 30 and the aluminum foil shielding layer 31. The audio line 28 includes a tinned oxygen-free copper conductor 34 and an irradiated cross-linked low-density polyethylene insulation layer 35.

[0026] An outer part of the cable core is sequentially coated with a polyester fiber plain woven fabric wrapping layer 8, an irradiated cross-linked high-density polyethylene inner sheath layer 9, a steel wire braided armor layer 10, and an irradiated cross-linked high-density polyethylene outer sheath layer 11. In one embodiment, the polyester fiber plain woven fabric wrapping layer 8 is a polyester fiber plain woven fabric overlapping wrapping structure with a thickness of 0.05 to 0.2 mm.

[0027] Finally, it should be noted that the above embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting it. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the technical field can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application.

Claims

1. A multi-core cable with enhanced roundness of cabling and steel wire braided armor, characterized in that: The power line core (1), communication line core (2), coaxial line core (3) and audio line core (4) are arranged in a cross shape and are jointly stranded with six silicone rubber filling core strips to form a cable core. The coaxial line core (3) and the audio line core (4) are arranged at intervals through the power line core (1) and the communication line core (2). The power line core (1) and the communication line core (2) have the same diameter and are larger than the outer diameter of the coaxial line core (3). The outer diameter of the coaxial line core (3) is larger than the outer diameter of the audio line core (4). First silicone rubber filling core strips (5) are arranged in the gaps between the power line core (1), the communication line core (2) and the coaxial line core (3). Second silicone rubber filling core strips (6) are arranged in the gaps between the power line core (1), the communication line core (2) and the audio line core (4). Third silicone rubber filling core strips (7) are respectively arranged between the bilateral gaps of the power line core (1), the communication line core (2), the coaxial line core (3) and the audio line core (4). The outer diameters of the first silicone rubber filling core strips (5), the second silicone rubber filling core strips (6) and the third silicone rubber filling core strips (7) increase in sequence. The cable core is externally coated with a polyester fiber plain woven fabric wrapping layer (8), an irradiated cross-linked high-density polyethylene inner sheath layer (9), a steel wire braided armor layer (10) and an irradiated cross-linked high-density polyethylene outer sheath layer (11).

2. The roundness-reinforced steel wire braided armored multi-core cable according to claim 1, characterized in that: The outer diameter of the coaxial line core (3) is 65% to 90% of the outer diameter of the power line core (1), and the outer diameter of the audio line core (4) is 70% to 80% of the outer diameter of the coaxial line core (3).

3. The roundness-reinforced wire-braided armored multi-core cable according to claim 1, characterized in that: The power line core (1) includes three power lines (12) stranded around a central filling core material to form a power line core body, and the power line core body is externally coated with a low-smoke and halogen-free polyolefin sheath layer (13).

4. The roundness-strengthened steel wire braided armored multi-core cable according to claim 3, characterized in that: The power line (12) includes a power conductor (14) and an XLPE insulation layer (15).

5. The roundness-strengthened wire-braided armored multi-core cable according to claim 1, characterized in that: The communication line core (2) includes four twisted pair cores (16) which are separated and arranged by a cross-shaped isolation core frame (17) and are jointly stranded to form a communication line core body. The communication line core body is externally coated with a polyurethane elastomer inner sheath layer (18), a copper-plastic composite wrapping shielding layer (19) and a low-smoke and halogen-free polyolefin outer sheath layer (20) in sequence.

6. The roundness-reinforced steel wire braided armored multi-core cable according to claim 5, characterized in that: The twisted pair core (16) is composed of two insulated wires (21) twisted together, and the insulated wire (21) includes a solid copper conductor (22) and a PFA insulation layer (23).

7. The roundness-reinforced wire-braided armored multi-core cable according to claim 1, characterized in that: The coaxial line core (3) includes a stainless steel single wire conductor (36). On the outer surface of the stainless steel single wire conductor (36), a tinned copper single wire braided and tightly pressed forms a tinned copper mesh conductor layer (24). The tinned copper mesh conductor layer (24) is externally coated with an FEP inner insulation layer (25), a sector-shaped tinned copper wire winding shielding layer (26) and an FEP extrusion sheath layer (27) in sequence.

8. The roundness-enhanced steel wire braided armored multi-core cable according to claim 1, characterized in that: The audio line core (4) includes two audio lines (28) and two polyethylene resin filling cores (29) jointly stranded to form an audio line core body. The audio line core body is externally coated with a PTFE semi-oriented tape wrapping anti-friction layer (30), an aluminum foil shielding layer (31) and an irradiated cross-linked low-density polyethylene sheath layer (32) in sequence. A tinned oxygen-free copper drainage line (33) is arranged between the PTFE semi-oriented tape wrapping anti-friction layer (30) and the aluminum foil shielding layer (31).

9. The roundness-reinforced steel wire braided armored multi-core cable according to claim 8, characterized in that: The audio cable (28) includes a tinned oxygen-free copper conductor (34) and an irradiated cross-linked low-density polyethylene insulating layer (35).

10. The roundness-strengthened wire braided armored multi-core cable according to claim 1, characterized in that: The polyester fiber plain woven fabric wrapping layer (8) is a lapped wrapping structure of polyester fiber plain woven fabric and has a thickness of 0.05 to 0.2 mm.

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