CN105655024A - Anti-interference shielding communication tow-chain cable and preparation method thereof - Google Patents
Anti-interference shielding communication tow-chain cable and preparation method thereof Download PDFInfo
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- CN105655024A CN105655024A CN201410683188.4A CN201410683188A CN105655024A CN 105655024 A CN105655024 A CN 105655024A CN 201410683188 A CN201410683188 A CN 201410683188A CN 105655024 A CN105655024 A CN 105655024A
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Abstract
The invention discloses an anti-interference shielding communication tow-chain cable and a preparation method thereof. The cable comprises a cable inner core, a first isolation layer, an inner sheath layer, a braiding layer, a second isolating layer and an outer sheath layer, wherein the first isolation layer, the inner sheath layer, the braiding layer, the second isolating layer and the outer sheath layer coat the cable inner core successively from inside to outside. The cable inner core is formed by twisting by a plurality of insulation core wires; the insulation core wires include conductor groups and insulation layers coating the conductor groups; and the conductor groups are formed by twisting of a plurality of conductors and the conductors are formed by bunch stranding of a plurality of copper wires, wherein the diameters of the monofilaments of the copper wires are less than 0.18mm. According to the invention, the cable has the following beneficial effects: the cable has the excellent anti-bending capability; fracturing can be prevented even after reciprocating bending motions of millions of times; and thus the physical and electrical performances of the cable can be protected from being affected.
Description
Technical field
The present invention relates to power cable technical field, more specifically, it relates to a kind of anti-interference shielded communication drag chain cable and its preparation method.
Background technology
Along with the raising of electric automatization degree; the automation application of unit is more and more extensive, and unit needs the occasion moved around also to get more and more, and tangles for preventing cable, weares and teares, pulls, fractures; often cable is put into cable-pulling chain, cable is formed protection. In actual use, dragging catenary system electric wire also usually with dragging chain to carry out coming and going bending, the bend resistance and anti tear ability that drag catenary system electric wire are proposed very high request by this.
But the conductor part of the existing heart yearn dragging catenary system electric wire inside uses, and thick copper wire is stranded to be made, it may also be useful to life-span, bend resistance and anti tear ability are all very limited, it is easy to fracture and affect physics and the electric property of cable; And when the existing requirement dragging catenary system is different, such as when its internal core quantity is required change by practical application, the existing adjustment dragging catenary system electric wire cannot do adaptability, internal structure and production all need to readjust and design, and this significantly limit existing adaptive faculty and the scope of application of dragging catenary system electric wire.
Summary of the invention
The technical problem to be solved in the present invention is, for above-mentioned defect of the prior art, it is provided that a kind of anti-interference shielded communication drag chain cable and its preparation method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of anti-interference shielded communication drag chain cable is provided, comprises core in cable, and the first sealing coat being coated on successively from inside to outside in described cable outside core, sheath, braid, the 2nd sealing coat and outer jacket; In described cable, core is stranded and become, the insulation layer that described insulation core wire comprises conductor group and is coated on outside described conductor group by many insulation core wires; Described conductor group is formed by many conductor knob strands, and described conductor is twisted by many copper wire bundles, and the filament diameter of described copper wire is less than 0.18mm.
In anti-interference shielded communication drag chain cable of the present invention, the filament diameter of described copper wire is less than 0.16mm, and the monofilament elongation of described copper wire is greater than 20%.
In anti-interference shielded communication drag chain cable of the present invention, the stranded direction of the bundle of described many copper wires be left to, the stranded direction of described many conductors is contrary with the stranded direction of described many copper wires.
In anti-interference shielded communication drag chain cable of the present invention, described first sealing coat and described 2nd sealing coat are wrapped and become by tissue material.
In anti-interference shielded communication drag chain cable of the present invention, the thickness of described first sealing coat is 0.03mm��0.08mm, and the thickness of described 2nd sealing coat is 0.03mm��0.1mm.
In anti-interference shielded communication drag chain cable of the present invention, described braid is woven by zinc-plated copper wire, and the diameter of described zinc-plated copper wire is 0.08��0.15mm, and the knitting tightness of described zinc-plated copper wire is greater than 80%.
In anti-interference shielded communication drag chain cable of the present invention, the thickness of described outer jacket is 0.6mm��1mm, and the thickness of described sheath is 0.5mm��0.8mm.
In anti-interference shielded communication drag chain cable of the present invention, described insulation layer, described sheath and described outer jacket are made by butyronitrile polyvinyl chloride composite materials.
In anti-interference shielded communication drag chain cable of the present invention, described butyronitrile polyvinyl chloride composite materials comprises by mass fraction: paracril 20��40 parts, polyvinyl chloride 75��95 parts, 2��7 parts, zinc oxide, anti-aging agent RD 1��2 part, stearic acid 2��5 parts, 15��45 parts, potter's clay and o-phthalic acid dibutyl ester 15��45 parts.
The present invention also provides the preparation method of a kind of anti-interference shielded communication drag chain cable, comprises the following steps:
S1, conductor prepare: by conductor material through wire drawing, stranded after, obtain conductor group;
S2, extrude insulation layer: the insulation layer adopting plsitive mold to obtain by butyronitrile polyvinyl chloride composite materials in described conductor group outer cladding obtains insulation core wire;
S3, wrapped first sealing coat: obtain core in cable by stranded for many described insulation core wires, the first sealing coat is evenly coated in described cable outside core, described first sealing coat is wrapped and become by tissue material;
S4, extrude sheath: adopt the mode of extruding to be evenly coated on outside described first sealing coat by the sheath that butyronitrile polyvinyl chloride composite materials is obtained;
S5, extrude braid: become braid to be evenly coated on outside described sheath by the braiding of zinc-plated copper wire;
S6, wrapped 2nd sealing coat: the 2nd sealing coat is evenly coated on outside described braid, described 2nd sealing coat is wrapped and become by tissue material;
S7, extrude outer jacket: adopt the mode of extruding to be evenly coated on outside described 2nd sealing coat by the outer jacket that butyronitrile polyvinyl chloride composite materials is obtained.
In sum, implement anti-interference shielded communication drag chain cable and its preparation method of the present invention, there is following useful effect: first, the cable of the application is by core in cable, and the first sealing coat being coated on successively from inside to outside in cable outside core, sheath, braid, the 2nd sealing coat and outer jacket are formed, this structure has stronger mechanical property and insulating property, and the electrical property of cable can be protected not damaged. secondly, conductor in insulation core wire adopts many soft copper wire bundles to be stranding into, this copper wire has higher monofilament elongation and less diameter, make to make the quantity of quantity much larger than the thick copper wire used described in prior art of the copper wire needed for the conductor of same external diameter, can effectively evenly disperse the external force suffered by cable like this, make the conductivity of conductor of the present invention strong, it is not easy fracture without hydrogen embrittlement phenomenon, there is extremely strong bend resistance ability, can not rupture after exceeding and coming and going bending motion for millions of times, and then guarantee that the physics of cable and electric property are not influenced.Finally, insulation layer, sheath and outer jacket use butyronitrile polyvinyl chloride composite materials to make, and can extend the work-ing life of drag chain cable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the anti-interference shielded communication drag chain cable that one of better embodiment of the present invention provides;
Fig. 2 is the structural representation of the insulation core wire of anti-interference shielded communication drag chain cable shown in Fig. 1.
Embodiment
In order to make the object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
As shown in Figure 1, the anti-interference shielded communication drag chain cable that the better embodiment of the present invention provides, this drag chain cable comprises core 1 in cable, and the first sealing coat 2 being coated in cable from inside to outside successively outside core 1, sheath 3, braid 4, the 2nd sealing coat 5 and outer jacket 6. Wherein, in cable, core 1 is stranded and become, the insulation layer 12 that insulation core wire 10 comprises conductor group 11 and is coated on outside conductor group 11 by many insulation core wires 10. Shown in composition graphs 2, conductor group 11 is formed by many conductors 13 knob strand, and conductor 13 is restrainted by many copper wires 14 and twisted, and the filament diameter of copper wire 14 is less than 0.2mm.
As shown in Figure 2, conductor 13 is twisted with soft copper wire 14 (not indicating on figure) bundle by many, the copper wire 14 of each described jewelry, expensive clothing and other valuables is annealing copper free wire, described annealing copper free wire is the fine copper also not containing any reductor residue containing oxygen, its electricapparatus performance is very excellent, and the monofilament elongation of described copper free wire is more than 20%, monofilament elongation height illustrates that copper wire is soft, ductility strong, and bend resistance ability is strong.
Being different from thick copper wire of the prior art, the filament diameter of copper wire 14 used herein is all less than 0.2mm; Preferably, the filament diameter of copper wire 14 is less than 0.18mm; In the present embodiment, the filament diameter of copper wire 14 is 0.16mm. Owing to the filament diameter of copper wire in the present invention 14 is little, make to make the quantity of quantity much larger than the thick copper wire used required in prior art of copper wire 14 needed for the conductor 13 of same external diameter, can effectively evenly disperse the external force suffered by cable like this, therefore, the conductivity of conductor 13 of the present invention is strong, is not easy fracture without hydrogen embrittlement phenomenon, has extremely strong bend resistance ability, can not rupture after exceeding and coming and going bending motion for millions of times, and then guarantee that the physics of cable and electric property are not influenced.
In addition, above-mentioned many copper wires 14 adopt the stranded mode bundle of armour be stranding into conductor 13, and adopt flexible high-grade polyester fiber silk to fill stranded gap. Wherein, in order to guarantee that the conductor 13 obtained has stronger intensity and bending ability, time stranded copper wire 14 bundle strand twisting pitch be less than or equal 10 times of the stranded external diameter of copper wire 14, and the stranded direction of the bundle of many copper wires 14 be left to.
As shown in Figure 2, many conductor 13 knob strands form conductor group 11, as shown in Figure 1, obtain insulation core wire 10 at this conductor group 11 outer cladding insulation layer 12. In the present embodiment, the stranded direction of many conductors 13 is contrary with the stranded direction of many copper wires 14.
Preferably, conductor group 11 had same outer diameter, identical stranded direction by many, and the conductor 13 knob strand of identical twisting pitch is obtained, it is possible to guarantee the conductor 13 in this conductor group 11 evenly by power in the round motion of drag chain cable, effective ability strengthening cable bending.
Preferably, in the present embodiment, conductor group 11 is seven, so that conductor group 11 forms rounded configurations arrangement, thus strengthens adaptive faculty and the scope of application of cable.
Further, the present embodiment adopts plsitive mold at conductor group 11 outer cladding insulation layer 12, thus obtains forming the insulation core wire 10 of drag chain cable, and this insulation layer 12 is made up of butyronitrile polyvinyl chloride composite materials. In the present embodiment, insulation layer 12 is butyronitrile polyvinyl chloride composite materials, to meet the withstand voltage by force of cable and strong wear resisting property. Wherein, butyronitrile polyvinyl chloride composite materials is made up of the raw material of following weight part number: paracril 20��40 parts, polyvinyl chloride 75��95 parts, 2��7 parts, zinc oxide, anti-aging agent RD 1��2 part, stearic acid 2��5 parts, 15��45 parts, potter's clay and o-phthalic acid dibutyl ester 15��45 parts. Wherein, anti-aging agent RD is 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer or 2,2,4 trimethyl 1,2 dihydroquinoline polymer, and potter's clay is boccaro.
It is different from the polyvinyl chloride insulation layer of traditional cable; this kind of butyronitrile polyvinyl chloride greatly improves the resistance to deterioration of cable; and improve tensile strength; enhance the overall flexibility of cable; insulation layer 12 is made can better to protect copper wire 14; avoid the insulativity destroying cable because insulation layer 12 weares and teares, cause potential safety hazard.
Preferably; the thickness of the application's insulation layer 12 is 0.2mm��0.7mm; the insulation layer 12 made due to butyronitrile polyvinyl chloride has stronger snappiness and wear resistance; make the thickness of traditional polyvinyl chloride insulation layer need to reach more than a times of insulation layer 12 thickness described in the application, just can have the protected effect identical with the application's insulation layer 12. In the present embodiment, the thickness of insulation layer 12 is 0.5mm.
As shown in Figure 1, many insulation core wires 10 adopt the twisting mode of armour formula carry out stranded obtaining core 1 in cable. Wherein, stranded direction by skin be inwardly followed successively by " S "-" Z "-" S " etc. to, in cable, the twisting pitch of core 1 is less than or equals 15 times of the stranded external diameter of core 1 in cable.
Preferably, it is possible to the stranded space between many insulation core wires 10 is added flexible high-grade polyester fiber rope or flexible stiffening web (on figure non-label). This flexibility stiffening web is that metallic substance that conductivity is low or non-metallic material are made; insulation core wire 10 can not only be played a protective role by adding flexible stiffening web in stranded space; avoid insulation core wire 10 damaged and destroy the insulativity of cable, and ductility and the bend resistance ability of whole cable can be strengthened.
Further, by adding flexible high-grade polyester fiber rope or flexible stiffening web in stranded space, accommodation can also be carried out according to the requirement dragging catenary system different, core 1 in cable is made to form rounded configurations, thus the one-piece construction maintaining drag chain cable is constant, the adjustment of this kind of adaptability is simple and enhances adaptive faculty and the scope of application of drag chain cable greatly.
In the present embodiment, the quantity of insulation core wire 10 is four, is added with flexible high-grade polyester fiber rope or flexible stiffening web, and makes core 1 in cable form rounded configurations in the stranded space of four insulation core wires 10. It should be appreciated that the present embodiment does not limit the concrete quantity of insulation core wire 10, it can be multiple; Preferably, the quantity of insulation core wire 10 is four or seven.
As shown in Figure 1, in cable, the periphery of core 1 is coated with the first sealing coat 2, and this first sealing coat 2 is wrapped and become by tissue material, by the outer wrapped one layer of cotton paper of core 1 in cable, the effect of core 1 in attached cable can be played, thus ensure the mechanical property of cable and the stable of electrical property.In the present embodiment, the thickness of the first sealing coat 2 is 0.03mm��0.08mm; Preferably, the thickness of the first sealing coat 2 is 0.055mm.
As shown in Figure 1, the periphery of the first sealing coat 2 is coated with sheath 3, and owing to the first sealing coat 2 is wrapped and become by tissue material, sheath 3 adopts the mode of extruding to be coated on the first sealing coat 2, it is possible to make the thickness of sheath 3 even. In the present embodiment, sheath 3 is made up of butyronitrile polyvinyl chloride composite materials, and the composition of butyronitrile polyvinyl chloride composite materials in restrictive coating 3 is identical with the composition of the butyronitrile polyvinyl chloride composite materials in insulation layer 12. Preferably, in the present embodiment, the thickness of sheath 3 is 0.5mm��0.8mm.
Above-mentioned butyronitrile polyvinyl chloride greatly improves the resistance to deterioration of cable; and improve tensile strength, enhance the overall flexibility of cable so that restrictive coating 3 can better protect the first sealing coat 2; avoid the insulativity destroying cable because restrictive coating 3 weares and teares, cause potential safety hazard.
As shown in Figure 1, the periphery of sheath 3 is uniformly coated with braid 4, and this braid 4 is woven by zinc-plated copper wire. In the present embodiment, the diameter of zinc-plated copper wire is 0.08��0.15mm, and the knitting tightness of zinc-plated copper wire is greater than 80%, better to protect core 1 in cable not damaged, it is provided that the work-ing life of drag chain cable.
As shown in Figure 1, it is wrapped and become by tissue material that the periphery of braid 4 is uniformly coated with the 2nd sealing coat the 5, two sealing coat 5, by the outer wrapped one layer of cotton paper of braid 4, can ensure that external sheath layer 6 is not easily pierced through by the braiding copper wire of braid 4, thus affect the mechanical property of cable. Further, the 2nd sealing coat 5 can also play the effect of fixing braid 4, and then ensures the mechanical property of cable and the stable of electrical property. In the present embodiment, the thickness of the first sealing coat 2 is 0.03mm��0.1mm; Preferably, the thickness of the first sealing coat 2 is 0.055mm.
As shown in Figure 1, the periphery of the 2nd sealing coat 5 is uniformly coated with outer jacket 6, this outer jacket 6 is made up of butyronitrile polyvinyl chloride composite materials, and the composition of butyronitrile polyvinyl chloride composite materials in outer jacket 6 is identical with the composition of the butyronitrile polyvinyl chloride composite materials in insulation layer 12.
This kind of butyronitrile polyvinyl chloride composite materials is adopted to greatly improve the resistance to deterioration of cable; and improve tensile strength; enhance the overall flexibility of cable; outer jacket 6 is made can better to protect core 1 in cable; avoid the insulativity destroying drag chain cable because outer jacket 6 weares and teares, cause potential safety hazard.
Therefore, adopt the outer jacket 6 that this kind of butyronitrile polyvinyl chloride composite materials is made, it is possible to make the mechanical property of drag chain cable, wear resisting property and flexility etc. reach optimum regime, be more applicable for the place that environment is severe. In addition, adopting this outer jacket 6, drag chain cable can not damaged the conductor 13 of available protecting inside after there is friction or mechanical shock, thus extend the work-ing life of drag chain cable and ensure that unit is transmitted electricity normally. Preferably, in the present embodiment, the thickness of outer jacket 6 is 0.6mm��1mm.
The application also provides the preparation method of a kind of anti-interference shielded communication drag chain cable, owing to the process control condition in drag chain cable preparation process is prior art, does not repeat them here. Wherein, described preparation method comprises the following steps:
S1, conductor prepare: by conductor material through wire drawing, stranded after, obtain conductor group 11.
Concrete, the preparation of conductor 13 comprises three sub-steps: select materials, wire drawing and stranded. Select materials: according to the conductor material of the requirement choice for use of the different cable of preparation, as selected electrician's round copper rod as conductor material; Wire drawing: conductor material is carried out wire drawing, anneal obtain annealing copper free wire, the diameter of this annealing copper free wire is 0.18mm; Stranded: annealing copper free wire wire drawing obtained adopts the stranded mode bundle of armour to be stranding into conductor 13, and adopt flexible high-grade polyester fiber silk to fill stranded gap. Finally, obtained many conductors 13 knob strand is formed conductor group 11, and the stranded direction of many conductors 13 is contrary with the stranded direction of many copper wires 14.
S2, extrude insulation layer: the insulation layer 12 adopting plsitive mold to obtain by butyronitrile polyvinyl chloride composite materials in conductor group 11 outer cladding obtains insulation core wire 10; Concrete, configuration packet contains the raw material of this butyronitrile polyvinyl chloride composite materials.
S3, wrapped first sealing coat: obtain core 1 in cable by stranded for many insulation core wires 10, be evenly coated in cable outside core 1 by the first sealing coat 2, and the first sealing coat 2 is wrapped and become by tissue material.
S4, extrude sheath: adopt the mode of extruding to be evenly coated on outside the first sealing coat 2 by the sheath 3 that butyronitrile polyvinyl chloride composite materials is obtained; Concrete, configuration packet contains the raw material of this butyronitrile polyvinyl chloride composite materials.
S5, extrude braid: become braid 4 to be evenly coated on outside sheath 3 by the braiding of zinc-plated copper wire; Concrete, braid 4 is woven by zinc-plated copper wire, and knitting tightness is greater than 80%.
S6, wrapped 2nd sealing coat: be evenly coated on outside braid 4 by the 2nd sealing coat 5, the 2nd sealing coat 5 is wrapped and become by tissue material.
S7, extrude outer jacket: adopt the mode of extruding to be evenly coated on outside the 2nd sealing coat 5 by the outer jacket 6 that butyronitrile polyvinyl chloride composite materials is obtained. Concrete, configuration packet contains the raw material of this butyronitrile polyvinyl chloride composite materials.
Embodiment 1
S1, conductor prepare: by conductor material through wire drawing, stranded after, obtain conductor group 11.
S2, extrude insulation layer: the insulation layer 12 adopting plsitive mold to obtain by butyronitrile polyvinyl chloride composite materials seven conductor group 11 outer claddings obtains insulation core wire 10.
Wherein, paracril 20 parts, polyvinyl chloride 95 parts, 4 parts, zinc oxide, anti-aging agent RD 2 parts, stearic acid 2 parts, 30 parts, potter's clay and o-phthalic acid dibutyl ester 25 parts.
S3, wrapped first sealing coat: obtain core 1 in cable by stranded for four insulation core wires 10, be evenly coated in cable outside core 1 by the first sealing coat 2, the first sealing coat 2 is wrapped and become by tissue material.
S4, extrude sheath: adopt the mode of extruding to be evenly coated on outside the first sealing coat 2 by the sheath 3 that butyronitrile polyvinyl chloride composite materials is obtained.
Wherein, in butyronitrile polyvinyl chloride composite materials, the mass fraction of each formula is identical with step S2.
S5, extrude braid: become braid 4 to be evenly coated on outside sheath 3 by the braiding of zinc-plated copper wire, and the knitting tightness of this zinc-plated copper wire is 80%.
S6, wrapped 2nd sealing coat: the 2nd sealing coat 5 is evenly coated on outside braid 4, the 2nd sealing coat 5 is wrapped and become by tissue material;
S7, extrude outer jacket: adopt the mode of extruding to be evenly coated on outside the 2nd sealing coat 5 by the outer jacket 6 that butyronitrile polyvinyl chloride composite materials is obtained.
Wherein, in butyronitrile polyvinyl chloride composite materials, the mass fraction of each formula is identical with step S2.
Embodiment 2
S1, conductor prepare: by conductor material through wire drawing, stranded after, obtain conductor group 11.
S2, extrude insulation layer: the insulation layer 12 adopting plsitive mold to obtain by butyronitrile polyvinyl chloride composite materials seven conductor group 11 outer claddings obtains insulation core wire 10.
Wherein, paracril 40 parts, polyvinyl chloride 75 parts, 2 parts, zinc oxide, anti-aging agent RD 2 parts, stearic acid 5 parts, 45 parts, potter's clay and o-phthalic acid dibutyl ester 30 parts.
S3, wrapped first sealing coat: obtain core 1 in cable by stranded for four insulation core wires 10, be evenly coated in cable outside core 1 by the first sealing coat 2, the first sealing coat 2 is wrapped and become by tissue material.
S4, extrude sheath: adopt the mode of extruding to be evenly coated on outside the first sealing coat 2 by the sheath 3 that butyronitrile polyvinyl chloride composite materials is obtained.
Wherein, in butyronitrile polyvinyl chloride composite materials, the mass fraction of each formula is identical with step S2.
S5, extrude braid: become braid 4 to be evenly coated on outside sheath 3 by the braiding of zinc-plated copper wire, and the knitting tightness of this zinc-plated copper wire is 80%.
S6, wrapped 2nd sealing coat: the 2nd sealing coat 5 is evenly coated on outside braid 4, the 2nd sealing coat 5 is wrapped and become by tissue material;
S7, extrude outer jacket: adopt the mode of extruding to be evenly coated on outside the 2nd sealing coat 5 by the outer jacket 6 that butyronitrile polyvinyl chloride composite materials is obtained.
Wherein, in butyronitrile polyvinyl chloride composite materials, the mass fraction of each formula is identical with step S2.
Embodiment 3
S1, conductor prepare: by conductor material through wire drawing, stranded after, obtain conductor group 11.
S2, extrude insulation layer: the insulation layer 12 adopting plsitive mold to obtain by butyronitrile polyvinyl chloride composite materials seven conductor group 11 outer claddings obtains insulation core wire 10.
Wherein, paracril 30 parts, polyvinyl chloride 95 parts, 3 parts, zinc oxide, anti-aging agent RD 1 part, stearic acid 3 parts, 20 parts, potter's clay and o-phthalic acid dibutyl ester 30 parts.
S3, wrapped first sealing coat: obtain core 1 in cable by stranded for four insulation core wires 10, be evenly coated in cable outside core 1 by the first sealing coat 2, the first sealing coat 2 is wrapped and become by tissue material.
S4, extrude sheath: adopt the mode of extruding to be evenly coated on outside the first sealing coat 2 by the sheath 3 that butyronitrile polyvinyl chloride composite materials is obtained.
Wherein, in butyronitrile polyvinyl chloride composite materials, the mass fraction of each formula is identical with step S2.
S5, extrude braid: become braid 4 to be evenly coated on outside sheath 3 by the braiding of zinc-plated copper wire, and the knitting tightness of this zinc-plated copper wire is 80%.
S6, wrapped 2nd sealing coat: the 2nd sealing coat 5 is evenly coated on outside braid 4, the 2nd sealing coat 5 is wrapped and become by tissue material;
S7, extrude outer jacket: adopt the mode of extruding to be evenly coated on outside the 2nd sealing coat 5 by the outer jacket 6 that butyronitrile polyvinyl chloride composite materials is obtained.
Wherein, in butyronitrile polyvinyl chloride composite materials, the mass fraction of each formula is identical with step S2.
In sum, implement drag chain cable and its preparation method of the present invention, there is following useful effect:
(1) cable of the application is by core in cable; and the first sealing coat being coated on successively from inside to outside in cable outside core, sheath, braid, the 2nd sealing coat and outer jacket are formed; this structure has stronger mechanical property and insulating property, and the electrical property of cable can be protected not damaged.
(2) conductor in insulation core wire adopts many soft copper wire bundles to be stranding into, this copper wire has higher monofilament elongation and less diameter, make to make the quantity of quantity much larger than the thick copper wire used described in prior art of the copper wire needed for the conductor of same external diameter, can effectively evenly disperse the external force suffered by cable like this, make the conductivity of conductor of the present invention strong, it is not easy fracture without hydrogen embrittlement phenomenon, there is extremely strong bend resistance ability, can not rupture after exceeding and coming and going bending motion for millions of times, and then guarantee that the physics of cable and electric property are not influenced.
(3) the conductor group in insulation core wire has same outer diameter, identical stranded direction by many, and the conductor twisting of identical twisting pitch obtains, shorten twisting pitch, guarantee that the conductor in this insulation core wire can evenly be subject to power in the round motion of drag chain cable, strengthen the ability of cable bending further.
(4) insulation layer, sheath and outer jacket use butyronitrile polyvinyl chloride composite materials to make, and can extend the work-ing life of drag chain cable.
(5) stranded space between many insulation core wires is added with flexible high-grade polyester fiber rope or flexible stiffening web (on figure non-label). This flexibility stiffening web is that metallic substance that conductivity is low or non-metallic material are made; core in cable can be made to form rounded configurations by adding flexible stiffening web in stranded space; insulation core wire can not only be played a protective role; avoid insulation core wire damaged and destroy the insulativity of cable, and ductility and the bend resistance ability of whole cable can be strengthened.
Although the present invention is described by specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, it is also possible to the present invention is carried out various conversion and equivalent replacement. In addition, for particular condition or material, it is possible to the present invention is made various amendment, and does not depart from the scope of the present invention. Therefore, it is intended that the present invention not be limited to disclosed specific embodiment, and the whole enforcement modes falling within the scope of the claims in the present invention should be comprised.
Claims (10)
1. an anti-interference shielded communication drag chain cable, it is characterized in that, comprise core in cable (1), and be coated in described cable core (1) from inside to outside successively outer the first sealing coat (2), sheath (3), braid (4), the 2nd sealing coat (5) and outer jacket (6); In described cable, core (1) is stranded and become by many insulation core wires (10), and described insulation core wire (10) comprises conductor group (11) and is coated on described conductor group (11) insulation layer (12) outward; Described conductor group (11) is formed by many conductors (13) knob strand, and described conductor (13) is twisted by many copper wires (14) bundle, and the filament diameter of described copper wire (14) is less than 0.18mm.
2. anti-interference shielded communication drag chain cable according to claim 1, it is characterised in that, the filament diameter of described copper wire (14) is less than 0.16mm, and the monofilament elongation of described copper wire (14) is greater than 20%.
3. anti-interference shielded communication drag chain cable according to claim 1, it is characterized in that, the stranded direction of bundle of described many copper wires (14) be left to, the stranded direction of described many conductors (13) is contrary with the stranded direction of described many copper wires (14).
4. anti-interference shielded communication drag chain cable according to claim 1, it is characterised in that, described first sealing coat (2) and described 2nd sealing coat (5) are wrapped and become by tissue material.
5. anti-interference shielded communication drag chain cable according to claim 4, it is characterised in that, the thickness of described first sealing coat (2) is 0.03mm��0.08mm, and the thickness of described 2nd sealing coat (5) is 0.03mm��0.1mm.
6. anti-interference shielded communication drag chain cable according to claim 1, it is characterized in that, described braid (4) is woven by zinc-plated copper wire, and the diameter of described zinc-plated copper wire is 0.08��0.15mm, and the knitting tightness of described zinc-plated copper wire is greater than 80%.
7. anti-interference shielded communication drag chain cable according to claim 1, it is characterised in that, the thickness of described outer jacket (6) is 0.6mm��1mm, and the thickness of described sheath (3) is 0.5mm��0.8mm.
8. anti-interference shielded communication drag chain cable according to claim 1, it is characterised in that, described insulation layer (12), described sheath (3) and described outer jacket (6) are made by butyronitrile polyvinyl chloride composite materials.
9. anti-interference shielded communication drag chain cable according to claim 8, it is characterized in that, described butyronitrile polyvinyl chloride composite materials comprises by mass fraction: paracril 20��40 parts, polyvinyl chloride 75��95 parts, 2��7 parts, zinc oxide, anti-aging agent RD 1��2 part, stearic acid 2��5 parts, 15��45 parts, potter's clay and o-phthalic acid dibutyl ester 15��45 parts.
10. the preparation method of an anti-interference shielded communication drag chain cable, it is characterised in that, comprise the following steps:
S1, conductor prepare: by conductor material through wire drawing, stranded after, obtain conductor group (11);
S2, extrude insulation layer: the insulation layer (12) adopting plsitive mold to obtain by butyronitrile polyvinyl chloride composite materials in described conductor group (11) outer cladding obtains insulation core wire (10);
S3, wrapped first sealing coat: obtain core in cable (1) by stranded for many described insulation core wires (10), evenly being coated in described cable by the first sealing coat (2) core (1) outward, described first sealing coat (2) is wrapped and become by tissue material;
S4, extrude sheath: adopt the mode of extruding to be evenly coated on described first sealing coat (2) outward by the sheath (3) that butyronitrile polyvinyl chloride composite materials is obtained;
S5, extrude braid: become braid (4) to be evenly coated on described sheath (3) outward by the braiding of zinc-plated copper wire;
S6, wrapped 2nd sealing coat: the 2nd sealing coat (5) is evenly coated on described braid (4) outward, described 2nd sealing coat (5) is wrapped and become by tissue material;
S7, extrude outer jacket: adopt the mode of extruding to be evenly coated on described 2nd sealing coat (5) outward by the outer jacket (6) that butyronitrile polyvinyl chloride composite materials is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683188.4A CN105655024A (en) | 2014-11-24 | 2014-11-24 | Anti-interference shielding communication tow-chain cable and preparation method thereof |
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