CN211529692U

CN211529692U - Super-flexible communication cable in 5G industrial internet digital system

Info

Publication number: CN211529692U
Application number: CN202020416816.3U
Authority: CN
Inventors: 汤代兵
Original assignee: Hubei Yuhong Photoelectric Industry Co ltd
Current assignee: Hubei Yuhong Photoelectric Industry Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-09-18
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a super gentle communication cable in 5G industry internet digital system adopts purity to add 250D nylon wire for 99.99% tin-plating oxygen-free copper conductor and twists and form above the conductor structure, and its direct current resistance maximum value 14 omega 100m uses the physics foaming to gather perfluor ethylene propylene insulating layer above the insulation system to this structure reduces sinle silk dielectric constant, satisfies the low attenuation requirement of signal transmission, improves sinle silk transmission rate. The utility model relates to a communication cable technical field. According to the super-flexible communication cable in the 5G industrial internet digital system, a cable product is finished by a one-step method in a mode of extruding a semi-conductive surface insulating layer on a shielding structure for improving electromagnetic compatibility, namely four pairs of signal lines are finished by extruding a semi-conductive shielding material and a sheath material synchronously by using a special die, the processes of twisting, longitudinally wrapping an aluminum foil and cabling are reduced, two production processes are reduced, and the process cost is reduced.

Description

Super-flexible communication cable in 5G industrial internet digital system

Technical Field

The utility model relates to a communication cable technical field specifically is super gentle communication cable in the digital system of 5G industry internet.

Background

With the rapid development of mobile communication, global user demand for mobile data is increasingly soaring, and it is expected that the world will formally enter the 5G era by 2021. The general transition trend of 5G networks is that mobile radio frequency devices are closer to end users to improve coverage and speed data transmission. Due to the construction limitations of conventional base stations, the solution to increase coverage is to deploy more small base stations, therefore, the coming of 5G can really drive the explosive growth of small base stations, the design specification GB50174-2017 of the domestic data center stipulates that 6A-type or above twisted-pair cables should be adopted for a horizontal subsystem bearing data services, meanwhile, higher requirements on bending resistance and flexibility of high-speed data cables applied to different environments are provided, in particular, the use of more than seven and eight types of data cables is increasing, and digital communication cables are used as important components inside base stations, particularly in terms of broadband, low attenuation, high interference resistance, high flexibility and the like, how to strengthen the design and improve the process and develop a digital communication cable better meeting the technical requirement of 5G is an important threshold in front of cable providers.

The fifth generation mobile communication technology is a novel network, is used for promoting the current mobile broadband service, is used for expanding a mobile network, and supports industrial applications such as internet of things, industrial automation control, logistics tracking, industrial AR, a cloud robot, a 5G network and the cloud robot. The 5G system integrates voice, data, image and part of control signal systems by a unified transmission medium through a combination mode of a data line and a module, and is integrated in a set of standard wiring system through a unified planning design, the system has the functions of building, network communication, information household appliance and equipment automation and provides an omnidirectional information interaction function, the traditional intelligent wiring system uses six types of digital communication cables, the highest transmission bandwidth is 250MHz, the transmission rate is 1000 Mbps, the highest transmission bandwidth for the digital communication cables in the 5G system is 2000MHz, the transmission rate is 40 Gbps, compared with the traditional high-frequency digital communication cables, the system can meet the technical index requirements of corresponding use places for places with higher requirements on network transmission performance and flexibility capacity under the condition that industrial intelligent equipment in the 5G system frequently moves, innovations must be made in the structural design and production process of cable manufacture. In addition, the traditional high-frequency digital communication cable uses polyethylene as a medium on the material, the medium constant of the material is 2.1, the signal attenuation is large when high-frequency signals (when the transmission bandwidth reaches more than 250 MHz) are transmitted, the highest temperature resistance of the traditional polyethylene insulating material is 70 ℃, the influence of the temperature of the use environment on the cable is particularly large, and the signal transmission attenuation is increased along with the increase of the temperature when the cable is in a high-temperature environment.

The utility model discloses an use and gather perfluor ethylene propylene material as insulating medium, use physics foaming three-layer coextrusion technique, the crowded package one deck gathers perfluor ethylene propylene cortex on the conductor promptly, through high pressure with nitrogen gas rush into plasticized perfluor ethylene propylene completion polyolefin insulating layer, make insulating medium surface be even cellular foaming layer, and gather perfluor ethylene propylene cortex at the crowded package one deck solid core in foaming layer surface, prevent moisture invasion foaming layer, ensure that signal transmission performance is more reliable, when the foaming degree reaches 50%, its dielectric constant is reduced to 1.57 by original 2.1, signal attenuation little characteristics when satisfying cable high frequency transmission, while manufacturing cost can reduce 50%, this material temperature resistant can reach 250 degrees the highest, ensure that cable transmission attenuation does not receive ambient temperature's influence. In addition, in order to reduce the mutual crosstalk influence of signals between the wire pairs, the traditional data cable adopts a smaller pitch among the four wire pairs during design, a certain pitch difference is formed among the four wire pairs, the pitches are respectively 9.95mm,12.1mm,15.3mm and 19.08mm, the smaller the pitch is, the larger the twisting-in rate is, and the material cost is correspondingly increased. The utility model discloses the four pairs of line pairs all adopt the same interval when the design of technique, 30mm promptly make cable physics length shorten, reduce manufacturing cost, reduce the signal transmission decay, simultaneously through using special mould when the sheath is extruded, adopt "one-step method" production technology to accomplish, be about to original pair twist indulges a packet aluminium foil process, the stranding process is deleted, accomplish shielding layer and restrictive coating simultaneously when the sheath is extruded, this technology reduces the production process simultaneously satisfying the good interference killing feature of high frequency cable, reduce product manufacturing cost.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides an ultra-flexible communication cable in a 5G industrial internet digital system, which adopts the form of extruding and wrapping a semi-conductive surface insulating layer on a shielding structure for improving electromagnetic compatibility, and is completed by a one-step method on a manufacturing method, namely, the extruding and wrapping of the semi-conductive shielding material and a sheath material by four pairs of signal lines are completed synchronously by using a special die, the procedure of twisting and longitudinally wrapping an aluminum foil and the procedure of cabling are reduced, two production procedures are reduced, the procedure cost is reduced, the outer sheath material uses a thermoplastic polyurethane material, the semi-conductive surface shielding material and a thermoplastic polyurethane material are extruded together by using a special die through a double-layer co-extrusion method, namely, the semi-conductive shielding material is extruded and wrapped on the surfaces of the four pairs of twisted pairs by an extrusion molding host machine, and the polyurethane material is extruded and wrapped on the surface of, forming a double-layer co-extruded structure.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the super-soft communication cable in the 5G industrial internet digital system comprises a cable core, a cable wire pair, an inner shielding layer, an outer shielding layer, a reinforcing core and an outer protective layer, wherein the cable core comprises an inner conductor and an insulating layer coated outside the inner conductor, the inner conductor is a stranded body formed by stranding a plurality of fine tinned copper wires with the purity of 99.99 percent and 250D nylon wires, the insulating layer is extruded on the surface of the inner conductor by physical foaming polyfluorinated ethylene propylene, the inner shielding layer, the reinforcing core and the outer shielding layer are arranged between the cable wire pair and the outer protective layer, a diversion wire is further arranged between the cable wire pair and the outer protective layer, the inner shielding layer and the outer shielding layer are extruded and wrapped by a semi-conductive surface shielding insulating material and the outer protective layer through a one-step method, the diversion wire is formed by stranding a plurality of tinned copper wires, and the diversion wire and the four pairs of cable cores are completed when the inner shielding layer is extruded and wrapped, the inner shielding layer and the outer shielding layer are extruded and wrapped on the surfaces of four pairs of cores by a one-step method through double-layer co-extrusion equipment, the reinforcing cores are of a multi-strand nylon yarn filling structure, and the outer shielding layer is made of a polyurethane elastomer material.

Preferably, the surface of the insulating layer is simultaneously extruded with an outer skin layer formed by mixing a solid core fluorinated ethylene propylene and fluorinated ethylene propylene color concentrates with different colors to form different color line pairs, and the thickness of the outer skin layer is 0.05 mm.

Preferably, the insulating layer has a foaming degree of 50% or more by using a physically foamed polyperfluorinated ethylene propylene structure.

Preferably, the inner shielding layer is wrapped on the surfaces of the four pairs of cores in a one-step mode by using a semi-conductive surface insulating material and double-layer co-extrusion equipment.

Preferably, the diversion line is matched with the four line pairs, so that an external interference signal can be guided to the ground.

Preferably, the outer protective layer is extruded on the surface of the outer shielding layer.

(III) advantageous effects

The utility model provides a super gentle communication cable in the digital system of 5G industry internet. Compared with the prior art, the method has the following beneficial effects:

(1) the ultra-soft communication cable in the 5G industrial Internet digital system is formed by twisting a tin-plated oxygen-free copper conductor with the purity of 99.99 percent and a 250D nylon wire on a conductor structure, the maximum value of the direct current resistance is 14 omega/100 m, a physical foaming fluorinated ethylene propylene insulating layer is used on the insulating structure, the dielectric constant of a wire core is reduced by the structure, the requirement of low attenuation of signal transmission is met, the transmission rate of the wire core is improved, the outer diameter size of the wire core is reduced under the condition of reaching the same transmission performance, a large amount of insulating materials are saved, the production cost is reduced, the foaming rate reaches 50 percent by using the physical foaming insulation, the consumption of the insulating materials is 50 percent of that of the solid core fluorinated ethylene propylene materials, the maximum attenuation value is less than 120dB/100m when the frequency is 1600MHz, and the near-end crosstalk attenuation value is more than or equal to 58dB/100m when the frequency is 1600MHz, the dielectric strength is AC,15KV, 5min does not break down. Insulation resistance is greater than or equal to 5000M omega.km, and the crowded package one deck polyolefin cortex in insulating layer surface simultaneously makes its line pair structure more stable, and characteristic impedance satisfies 100 +/-32 omega at 1600MHz, simultaneously the utility model discloses the cable takes the form of crowded package semiconduction face insulating layer for promoting electromagnetic compatibility above shielding structure, uses "one-step method" to accomplish above the manufacturing approach, and four pairs of signal line are promptly crowded package semiconduction shielding material and sheath material accomplish through using a special mould in step, reduce to hank to indulge package aluminium foil process and stranding process, reduce twice production processes, reduce the process cost.

(2) The ultra-flexible communication cable in the 5G industrial Internet digital system has the advantages that the outer protective layer material of a cable product is made of high-flame-retardant polyurethane material, the material has good bending resistance, wear resistance and acid and alkali oil corrosion resistance, the minimum value of the tensile strength is 20MPa after air heat aging experiments (110 ℃, 168 hours), the minimum value of the elongation at break is 300%, the minimum value of the change rate of the tensile strength is +/-40% after mineral oil experiments (100 ℃, 168 hours) and the minimum value of the elongation at break is 300%, the overall flame retardant performance of the cable meets the CM-grade flame retardant performance requirements of the American underwriters laboratories, the semi-conductive surface shielding material and the thermoplastic polyurethane material are extruded together by a special die through a double-layer co-extrusion method, namely, an extrusion main machine extrudes the semi-conductive shielding material on the surfaces of four pairs of twisted pairs, and an extrusion auxiliary machine simultaneously extrudes the polyurethane material on the surface of the semi-conductive, the double-layer co-extrusion structure is formed, so that the production cost is reduced by 50%, the transmission attenuation is small, the electromagnetic compatibility is strong, and the bending resistance is strong.

Drawings

Fig. 1 is a schematic structural diagram of the communication cable of the present invention.

In the figure: 1 inner conductor, 2 insulating layers, 3 inner shielding layers, 4 reinforcing cores, 5 diversion lines, 6 outer shielding layers and 7 outer shielding layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a technical solution: the super-flexible communication cable in the 5G industrial internet digital system comprises a cable core, a cable wire pair, an inner shielding layer 3, an outer shielding layer 6, a reinforcing core 4 and an outer protective layer 7, wherein the cable core comprises an inner conductor 1 and an insulating layer 2 coated outside the inner conductor 1, the inner conductor 1 is a twisted body twisted by adopting a plurality of strands of thin tinned copper wires with the purity of 99.99 percent and 250D nylon wires, the electric conductivity of the twisted body reaches 100 percent, the bending resistance of the conductor is enhanced, the insulating layer 2 is extruded on the surface of the inner conductor 1 by using physical foaming polyfluorinated ethylene propylene, the insulating material is high-temperature resistant, the dielectric constant of the foaming insulating layer is small, the performance is stable, the inner shielding layer 3, the reinforcing core 4 and the outer shielding layer 6 are all arranged between the cable wire pair and the outer protective layer 7, a diversion wire 5 is also arranged between the cable wire pair and the outer protective layer 7, and the inner shielding layer 3 and the outer shielding layer 6 are extruded and coated by using a semi-conductive surface, the guide wire 5 is stranded by a plurality of strands of tinned copper wires, the guide wire 5 and four pairs of wire cores are extruded and wrapped on the surface of the four pairs of wire cores by double-layer co-extrusion equipment, the structure is favorable for being welded on terminal equipment to guide interference electromagnetic clutter signals into the ground and reduce interference, the inner shielding layer 3 and the outer shielding layer 6 are extruded and wrapped on the surfaces of the four pairs of wire cores by a one-step method, the method reduces the original process of longitudinally wrapping aluminum foil and cabling by pair twisting, reduces the production cost, is favorable for increasing the electromagnetic compatibility of the cable, the reinforcing core 4 is a multi-strand nylon wire filling structure, the cable is more resistant to bending in the moving process, the outer protective layer 7 is made of a polyurethane elastomer material, the material has good flame retardance, acid and alkali corrosion resistance, bending property and wear resistance, and the overall flame retardance of the cable meets the CM-grade flame retardance requirement of a laboratory of the American insurance, the surface of the insulating layer 2 is simultaneously extruded and coated with an outer skin layer mixed by solid fluorinated ethylene propylene and fluorinated ethylene propylene color masters with different colors to form different color line pairs, and the thickness of skin layer is 0.05mm, this structure is favorable to increasing the conductor adhesive force, increase the sinle silk structure return loss value, prevent moisture invasion foaming layer, be favorable to sinle silk characteristic impedance's stability, the foaming degree that insulating layer 2 used physics foaming to gather perfluor ethylene propylene structure is more than 50%, the cell structure is even, high frequency signal transmission is low for a short time, reduce material cost, internal shield layer 3 uses semiconduction face insulating material to accomplish through "one-step method" and crowds the package at four pairs of sinle silk surfaces at double-deck crowded equipment completion, be favorable to the anti-interference, water conservancy diversion line 5 and four line pair cooperations, can be with external interference signal leading-in ground, 7 crowded packages in the surface of external shield 6 of outer jacket.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1.5 super gentle communication cable in the digital system of G industry internet, its characterized in that: the cable comprises a cable core, a cable wire pair, an inner shielding layer (3), an outer shielding layer (6), a reinforcing core (4) and an outer shielding layer (7), wherein the cable core comprises an inner conductor (1) and an insulating layer (2) coated outside the inner conductor (1), the inner conductor (1) is a twisted body twisted by adopting a plurality of strands of thin tinned copper wires with the purity of 99.99 percent and 250D nylon wires, the insulating layer (2) is wrapped on the surface of the inner conductor (1) in an extruding way by physical foaming and polyfluorinated ethylene propylene, the inner shielding layer (3), the reinforcing core (4) and the outer shielding layer (6) are all arranged between the cable wire pair and the outer shielding layer (7), a diversion wire (5) is further arranged between the cable wire pair and the outer shielding layer (7), and the inner shielding layer (3) and the outer shielding layer (6) are wrapped by a semi-conductive surface shielding insulating material and the outer shielding layer (7) in an extruding way by a one-step method, the flow guide wire (5) is formed by stranding a plurality of tinned copper wires, the flow guide wire (5) and four pairs of wire cores are finished when the inner shielding layer (3) is wrapped in a squeezing mode, the inner shielding layer (3) and the outer shielding layer (6) are wrapped in four pairs of wire core surfaces in a squeezing mode through a one-step method by utilizing double-layer co-extrusion equipment, the reinforced core (4) is of a multi-strand nylon wire filling structure, and the outer protective layer (7) is made of a polyurethane elastomer material.

2. The ultra-flexible communication cable in 5G industrial Internet digitization system of claim 1, wherein: the surface of the insulating layer (2) is simultaneously extruded with an outer skin layer formed by mixing a solid core fluorinated ethylene propylene and a fluorinated ethylene propylene color master batch with different colors to form different color line pairs, and the thickness of the outer skin layer is 0.05 mm.

3. The ultra-flexible communication cable in 5G industrial Internet digitization system of claim 1, wherein: the insulating layer (2) has a foaming degree of more than 50% by using a physical foaming polyperfluorinated ethylene propylene structure.

4. The ultra-flexible communication cable in 5G industrial Internet digitization system of claim 1, wherein: the inner shielding layer (3) is extruded and wrapped on the surfaces of the four pairs of cores by using a semi-conductive surface insulating material through a one-step method and utilizing double-layer co-extrusion equipment.

5. The ultra-flexible communication cable in 5G industrial Internet digitization system of claim 1, wherein: the diversion line (5) is matched with the four line pairs, so that an external interference signal can be guided into the ground.

6. The ultra-flexible communication cable in 5G industrial Internet digitization system of claim 1, wherein: the outer protective layer (7) is extruded on the surface of the outer shielding layer (6).