CN219085681U - High-flexibility special cable for coating production line - Google Patents

High-flexibility special cable for coating production line Download PDF

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Publication number
CN219085681U
CN219085681U CN202222542135.3U CN202222542135U CN219085681U CN 219085681 U CN219085681 U CN 219085681U CN 202222542135 U CN202222542135 U CN 202222542135U CN 219085681 U CN219085681 U CN 219085681U
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cable
copper
conductor
twisting
insulating layer
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潘东杰
凌国桢
祝军
何志峰
花珺
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Jiangsu Shangshang Cable Group Co Ltd
Jiangsu Shangshang Cable Group New Material Co Ltd
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Jiangsu Shangshang Cable Group Co Ltd
Jiangsu Shangshang Cable Group New Material Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

A high-flexibility special cable of a coating production line is structurally characterized in that a plurality of wire cores (3) and filling ropes (4) are twisted into a cable core (5); the cable core (5) is sequentially wrapped with the inner liner (6), the woven shielding layer (7) and the outer sheath (8); the wire core (3) is formed by wrapping an insulating layer (2) outside a conductor (1); the conductor (1) is a 6 th flex-resistant bare copper conductor, and is formed by twisting a plurality of copper monofilaments in a twisting manner; the insulating layer (2) is made of TPE elastomer insulating material; the thickness of the insulating layer is 0.80-0.85 mm; the twisting pitch of the cable core (5) is 14-16 times of the outer diameter of the cable core; the filling rope (4) is a twisted PP rope; the inner liner (6) is formed by extruding polyurethane elastomer sheath materials; the shielding layer (7) is formed by braiding braided wires, the diameter of the braided wires is 0.180-0.185 mm, and the braiding density is not less than 80%; the outer sheath (8) is formed by extruding polyurethane elastomer sheath materials.

Description

High-flexibility special cable for coating production line
Technical Field
The technical scheme belongs to the technical field of cables, and particularly relates to a high-flexibility special cable for a coating production line.
Background
Along with the development of industrial technology, the coating has been developed from manual to industrial automation, and the automation degree is higher and higher, so that the application of the coating production line is wider and wider, and the coating production line goes deep into a plurality of fields of national economy. The coating production line utilizes the coordination cooperation of various coating equipment to realize the coating work which obtains profit for industrial production on an industrial production line. The coating assembly line equipment is suitable for the paint spraying and plastic spraying treatment of the surfaces of the workpieces, is mainly used for the coating operation of single workpieces or small batches of workpieces, and is matched with conveying machinery such as a hanging conveyor, an electric rail trolley, a ground conveyor and the like to form conveying operation.
With the most common spraying mechanical arm in the coating production line, the power line and the control line of the motor are integrated in the same cable, so as to reduce the number of on-site cables. This requires the cable to have multiple cores for transmitting power and signals, respectively. In addition to electrical properties and conventional mechanical properties, such cables are required to have oil resistance and softness. Ordinary cables cannot meet specific requirements and require non-standard specialty cables to be designed.
Disclosure of Invention
In order to solve the problems in the prior art, the technical scheme provides a high-flexibility special cable for a coating production line and a manufacturing method thereof, and the special cable comprises the following specific steps:
a high-flexibility special cable of a coating production line is structurally characterized in that a plurality of wire cores and filling ropes are twisted into a cable core; the cable core is sequentially wrapped with the inner liner layer, the woven shielding layer and the outer sheath.
The wire core is formed by wrapping an insulating layer outside a conductor;
the conductor is a 6 th flex-resistant bare copper conductor, and is formed by twisting a plurality of copper monofilaments in a twisting manner;
the insulating layer is made of TPE elastomer insulating material; the thickness of the insulating layer is 0.80-0.85 mm;
the twisting pitch range of the cable core is 14-16 times of the outer diameter of the cable core;
the filling rope is a twisted PP rope;
the lining layer is formed by extruding polyurethane elastomer sheath materials;
the shielding layer is formed by braiding braided wires, the diameter of the braided wires is 0.180-0.185 mm, and the braiding density is not less than 80%;
the outer sheath is formed by extruding polyurethane elastomer sheath materials.
The oxygen content of copper in the copper monofilament constituting the conductor is not more than 0.005%, and the volume resistivity at 20 ℃ is not more than 0.017241 Ω mm 2 /m。
After the technical scheme is adopted, the utility model has the following beneficial effects:
the conductor is a 6 th stranded copper conductor meeting the requirements of GB/T3956, and has higher softness;
the insulating layer is formed by extrusion of TPE elastomer insulating materials, and has excellent electrical performance, mechanical and physical properties and processability;
the inner liner adopts polyurethane sheath material, is suitable for extrusion production, and has smaller bending radius and softness.
The shielding layer is braided and shielded by tinned copper wires, so that the shielding layer has good shielding performance and softness;
the outer sheath is made of polyurethane sheath material.
The cable has good mechanical property and electrical property, and has excellent performances of low temperature resistance, oil resistance, wear resistance, fatigue resistance, bending resistance and the like.
Drawings
Fig. 1 is a schematic view of a radial cross-sectional structure of an embodiment cable.
In the figure: conductor 1, insulating layer 2, sinle silk 3, filling rope 4, cable core 5, inner liner 6, shielding layer 7, oversheath 8.
Detailed Description
The present technical solution is described in further detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, a high-flexibility special cable of a coating production line is structurally characterized in that a plurality of (5 in this example) wire cores 3 and filling ropes 4 are twisted into a cable core 5; the cable core 5 is sequentially wrapped with the inner liner 6, the woven shielding layer 7 and the outer sheath 8.
The wire core 3 is formed by wrapping an insulating layer 2 outside a conductor 1;
the conductor 1 is a 6 th flex-resistant bare copper conductor;
the insulating layer 2 is made of TPE elastomer insulating material; the thickness of the insulating layer is 0.80-0.85 mm;
the twisting pitch range of the cable core 5 is 14-16 times of the cable core outer diameter;
the filling rope 4 is a twisted PP rope;
the lining layer 6 is formed by extruding and packing polyurethane elastomer sheath materials (the sheath materials in the example have the optional marks of PS9-7398, the extrusion mode is extrusion production, and the thickness is 1.0 mm);
the shielding layer 7 is formed by braiding braided wires, the diameter of the braided wires is 0.180-0.185 mm, and the braiding density is not less than 80%; the braided wires are soft tinned round copper wires;
the outer sheath 8 is formed by extruding polyurethane elastomer sheath materials (in the example, the optional brand of the sheath is PS9-7398, and the thickness of the outer sheath is 1.5 mm);
in this example:
the conductor meets the requirements of the 6 th bare copper flexible conductor of GB/T3956-2008. The oxygen content of copper in the copper monofilament constituting the conductor is not more than 0.005%, and the volume resistivity at 20 ℃ is not more than 0.017241 Ω mm 2 And/m. The conductor is formed by twisting a plurality of copper monofilaments in a multi-twisting manner, specifically 7 strands of copper wires are twisted, each strand of copper wires is formed by 20 copper monofilaments, and the nominal diameter range of each copper monofilament is 0.145-0.150 mm. The twisting pitch diameter ratio of the conductor strand is 10-12 times, and the twisting pitch diameter ratio of the copper monofilament is 20-25 times. In this example, the nominal diameter of the conductor is 2.1mm.
The thickness of the insulating layer was 0.80mm.
The filling rope is formed by high-purity twisting type PP filling rope, and the diameter of the filling rope is 4.0mm.
The weaving density of the tinned soft round copper wires in the shielding layer is 80% -82%, and the weaving pitch is 66mm.
After the technical scheme is adopted, the utility model has the following beneficial effects:
the conductor is a 6 th stranded copper conductor meeting the requirements of GB/T3956, and has higher softness;
the insulating layer is formed by extrusion of TPE elastomer insulating materials, and has excellent electrical performance, mechanical and physical properties and processability;
the shielding layer is braided and shielded by tinned copper wires, so that the shielding layer has good shielding performance and softness;
the inner liner and the outer sheath are made of polyurethane sheath materials, and have excellent performances of fatigue resistance, wear resistance, bending resistance and the like.
Through detection, the characteristics of this case cable include:
1) Good electrical properties
Core withstand voltage test: an alternating voltage of 4kV and 5min is applied between the water and the wire core, so that the cable is not broken down;
and (3) final voltage test: applying an alternating voltage of 4.0kV between the wire cores or between the wire cores and the shielding, and keeping the cable to be not broken down for 5 min;
2) Excellent mechanical properties
The tensile strength before insulation aging is not less than 15.0Mpa, and the elongation at break is not less than 400%; after aging, the tensile strength change rate is not more than 25%, the elongation at break is not less than 300%, and the change rate is not more than 25%. The tensile strength of the sheath before aging is not less than 20.0Mpa, and the elongation at break is not less than 400%; after aging, the tensile strength is not less than 20.0Mpa, and the elongation at break is not less than 400%; the tensile strength change rate is not more than 30%, and the elongation at break change rate is not more than 30%.
3) Excellent oil resistance
Immersing the outer sheath in IRM No. 902 mineral oil at 100+/-2 ℃ for 24 hours, wherein the retention rate of the tensile strength and the elongation at break of the outer sheath is not lower than 70%;
4) Excellent low temperature resistance
The finished cable can be subjected to a low-temperature impact test (drop weight 500g, drop height 100 mm) at-40 ℃ for 4 hours, and the cable is not cracked. And the minimum elongation of the sheath is not less than 30% at-40 ℃ for 4 hours.
5) Bending resistance
The finished cable can withstand 140 ten thousand cyclic bending tests, and the cable is continuously broken and shorted.
6) Environmental protection performance
The cables are produced by adopting environment-friendly materials, and all cable materials meet the ROHS 2.0 requirement.

Claims (8)

1. A high-flexibility special cable of a coating production line is characterized in that a plurality of wire cores (3) and filling ropes (4) are twisted into a cable core (5); an inner liner (6), a woven shielding layer (7) and an outer sheath (8) are sequentially wrapped outside the cable core (5);
the wire core (3) is formed by wrapping an insulating layer (2) outside a conductor (1);
the conductor (1) is a 6 th flex-resistant bare copper conductor, and is formed by twisting a plurality of copper monofilaments in a twisting manner;
the insulating layer (2) is made of TPE elastomer insulating material; the thickness of the insulating layer is 0.80-0.85 mm;
the range of the twisting pitch of the cable core (5) is 14-16 times of the outer diameter of the cable core;
the filling rope (4) is a twisted PP rope;
the lining layer (6) is formed by extruding polyurethane elastomer sheath materials;
the shielding layer (7) is formed by braiding braided wires, the diameter of the braided wires is 0.180-0.185 mm, and the braiding density is not less than 80%;
the outer sheath (8) is formed by extruding polyurethane elastomer sheath materials.
2. The high-flexibility special cable of coating line as claimed in claim 1, wherein the oxygen content of copper in copper filaments constituting the conductor is not more than 0.005%, and the volume resistivity at 20 ℃ is not more than 0.017241 Ω.mm 2 /m。
3. The high-flexibility special cable of a coating production line according to claim 1 or 2, wherein the nominal diameter of the conductor is 2.1mm, the cable is formed by twisting 7 strands of copper wires, each strand of copper wires is composed of 20 copper monofilaments, and the nominal diameter of each copper monofilament is in the range of 0.145mm to 0.150mm; the twisting pitch diameter ratio of the conductor strand is 10-12 times, and the twisting pitch diameter ratio of the copper monofilament is 20-25 times.
4. A high flexibility specialty cable for a coating line according to claim 3, wherein the thickness of the insulating layer is 0.80mm.
5. A high flexibility specialty cable for a coating line according to claim 3, wherein the filler rope has a diameter of 4.0mm.
6. A high flexibility special cable for a coating production line according to claim 3, wherein in the shielding layer, the braided wire is soft tin-plated round copper wire; the knitting density of the tinned soft round copper wire is 80-82%, and the knitting pitch is 66mm.
7. A high flexibility specialty cable for a coating line according to claim 3, wherein the thickness of the inner liner is 1.0mm.
8. A high flexibility specialty cable for a coating line according to claim 3, wherein the thickness of the outer sheath is 1.5mm.
CN202222542135.3U 2022-09-26 2022-09-26 High-flexibility special cable for coating production line Active CN219085681U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222542135.3U CN219085681U (en) 2022-09-26 2022-09-26 High-flexibility special cable for coating production line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222542135.3U CN219085681U (en) 2022-09-26 2022-09-26 High-flexibility special cable for coating production line

Publications (1)

Publication Number Publication Date
CN219085681U true CN219085681U (en) 2023-05-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222542135.3U Active CN219085681U (en) 2022-09-26 2022-09-26 High-flexibility special cable for coating production line

Country Status (1)

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CN (1) CN219085681U (en)

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