CN103680693A - Tensile cable and method for manufacturing same - Google Patents
Tensile cable and method for manufacturing same Download PDFInfo
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- CN103680693A CN103680693A CN201310596921.4A CN201310596921A CN103680693A CN 103680693 A CN103680693 A CN 103680693A CN 201310596921 A CN201310596921 A CN 201310596921A CN 103680693 A CN103680693 A CN 103680693A
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Abstract
The invention discloses a tensile cable and a method for manufacturing the same, and belongs to the technical field of cables and wires. The tensile cable comprises an insulating outer layer and a conductor inner core. The insulating outer layer covers the conductor inner core, the conductor inner core is a stranded wire, and a plurality of metal wires and at least one PET (polyethylene terephthalate) wire are stranded to form the stranded wire. The tensile cable and the method have the advantages that the tensile strength of the tensile cable can be obviously improved on the premise that the conductivity of the tensile cable is guaranteed, and the tensile cable cannot be broken or damaged easily and is firm and durable.
Description
Technical field
The present invention relates to technical field of electric wires and cables, particularly a kind of tensile cable and manufacture method thereof.
Background technology
Cable, normally by several or several groups of wires (at least two every group) are stranded forms, is similar to rope, mutually insulated between every group of wire, and often round Yi Gen center, be twisted into, whole outside is surrounded by the cover layer of high-insulation.Common cable is as power cable, control cables, signal cable etc., all sub-thread or stranded conductor and insulating barrier, consists of, and can be used for connecting circuit, electrical equipment etc.Cable has interior energising, the feature of external insulation.The cable of broad sense generally includes electric wire.
Cable of the prior art adopts outer coating insulation material mostly, inside establishes metal material as the structure of conductor inner core, and because metal material pliability is low, easily fracture, thereby cause the tensile strength of cable poor, when bearing larger pulling force, easy fracture damage.
Summary of the invention
The embodiment of the present invention provides a kind of tensile cable and manufacture method thereof, can effectively improve the tensile strength of cable, makes cable be difficult for fracture damage, durable.
The technical scheme that the embodiment of the present invention provides is as follows:
On the one hand, provide a kind of tensile cable, having comprised:
Insulating outer layer and conductor inner core, described insulating outer layer is coated described conductor inner core;
Described conductor inner core is by many wires and at least one stranded twisted wire forming of PET line.
Preferably, described PET line is positioned at the center of described twisted wire, and described many wires carry out multilayer around described PET line and arrange.
Preferably, described many wires carry out two-layer arranging around described PET line.
Preferably, described metal wire is copper cash or aluminum steel, and the material of described insulating outer layer is PVC.
On the other hand, provide a kind of manufacture method of tensile cable, having comprised:
Adopt default lay to carry out many wires and at least one PET line stranded, make twisted wire;
Described twisted wire is annealed in annealing furnace, then carry out coolingly, make conductor inner core;
Adopt default insulation thickness, at described conductor inner core outer cladding insulating material, make insulating outer layer.
Preferably, the annealing temperature of described annealing furnace is 260～280 ℃, and annealing time is 90～110 minutes;
Be at least 16 hours the cooling time in described cooling procedure.
Preferably, the annealing temperature of described annealing furnace is 280 ℃, and described annealing time is 100 minutes;
Be 16 hours the cooling time in described cooling procedure.
Preferably, described many wires and at least one PET line are carried out stranded before, described many wires are arranged on a plurality of separated time web plates, PET line is arranged to the central hole of innermost layer separated time web plate, make PET line be positioned at center, many wires carry out multilayer around described PET line and arrange.
Preferably, described separated time web plate is two, and described many wires carry out two-layer arranging around described PET line.
Preferably, adopt and extrude technique at described conductor inner core outer cladding insulating material.
The tensile cable that the embodiment of the present invention provides, adopts metal wire and the stranded twisted wire forming of PET line as conductor inner core, guaranteeing, under the prerequisite of electric conductivity, effectively to have improved the tensile property of cable, makes cable be difficult for fracture damage, durable.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the present invention, for those of ordinary skills, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the distribution map of the tensile cable conductor inner core that provides of embodiment of the present invention when stranded;
Fig. 2 is the profile of the tensile cable that provides of the embodiment of the present invention.
Reference numeral:
1 insulating outer layer; 2 conductor inner cores; 3 metal wires; 4PET line.
Embodiment
In order to make those skilled in the art person understand better the scheme of the embodiment of the present invention, below in conjunction with drawings and embodiments, the embodiment of the present invention is described in further detail.
Cable of the prior art generally includes: insulating outer layer and conductor inner core, conductor inner core is the main carriers that cable carries out electric power transfer, conventionally adopts the metal materials such as copper, aluminium to make.Because metal material pliability is lower, do the used time bearing larger pulling force, easily fracture.Therefore,, in some particular application, for example, while needing cable to carry out traction action, adopt the cable that conductor inner core is metal material to meet the demands.
For this reason, the embodiment of the present invention provides a kind of tensile cable, adopts metal wire and the stranded twisted wire forming of PET line to make conductor inner core, has effectively improved the tensile property of cable.
As depicted in figs. 1 and 2, tensile cable comprises: insulating outer layer 1 and conductor inner core 2, insulating outer layer 1 coating conductor inner core 2; Conductor inner core 2 is by many wires 3 and at least one stranded twisted wire forming of PET line 4.
PET(polythylene terephthalate) be called again PETG, it is topmost kind in thermoplastic polyester, there is good machinery and chemical property, for example: pliability, impact resistance and folding quality are good, resistance to creep, fatigue resistance, wear-resisting wiping and good stability of the dimension, wear away little and hardness is high, electrical insulation capability is good, and temperature influence is little.
Because PET line has good pliability and folding resistance, make the stranded twisted wire forming of metal wire and PET line, there is good tensile property.
In embodiments of the present invention, can make the coated PET line 4 of metal wire 3 in twisted wire process, preferably adopt PET line 4 to be positioned at twisted wire center, the structure that multiple layer metal line 3 encirclement PET lines 4 are arranged is carried out stranded, thereby guarantees that twisted wire skin is metal material.The arrangement that preferably adopts double layer of metal line 3 to surround PET line 4 carries out stranded.Due to twisted wire center stranded the good PET line 4 of pliability, make the existing good electric conductivity of twisted wire have again enough tensile strength.In actual applications, metal wire 3 can be copper cash or aluminum steel, and the material of insulating outer layer 1 can be PVC(Polyvinyl chloride polymer, polyvinyl chloride).
The tensile cable that the embodiment of the present invention provides, adopts metal wire and the stranded twisted wire forming of PET line as conductor inner core, guaranteeing, under the prerequisite of electric conductivity, effectively to have improved the tensile property of cable, makes cable be difficult for fracture damage, durable.
The embodiment of the present invention, the corresponding manufacture method that a kind of tensile cable is provided, comprising:
Step 1: wire stranding, adopt default lay to carry out many wires and at least one PET line stranded, make twisted wire.By wire stranding, by many wires and at least one PET line weave in, make twisted wire, the pliability of metal wire and PET line, whole degree and tensile strength are all improved.
In the embodiment of the present invention, many wires and at least one PET line are carried out stranded before, first many wires are arranged on a plurality of separated time web plates, PET line is arranged to the central hole of innermost layer separated time web plate, make PET line be positioned at center, many wires carry out multilayer around PET line and arrange.Wherein, the quantity of separated time web plate can be selected as required, and the number of plies of arranging of the corresponding metal wire of quantity of separated time web plate, preferably adopts two separated time web plates, and many wires carry out two-layer arranging around PET line.
Step 2: annealing and refrigerating work procedure, twisted wire is annealed in annealing furnace, then carry out coolingly, make conductor inner core.Wherein, the annealing temperature of annealing furnace can be set to 260～280 ℃, and annealing time can be 90～110 minutes; Be at least 16 hours the cooling time in cooling procedure.
In embodiments of the present invention, because the fusion temperature of PET material is lower than the fusing point of metal material, guarantee that in annealing process, PET can not melt, arranging of annealing temperature is extremely important, can be by annealing furnace epimere, the temperature of stage casing and hypomere is all set to 260～280 ℃, preferably in being the annealing furnace of 280 ℃, temperature anneals, annealing time can be set as 100 minutes, after annealed operation, make the single-wire of twisted wire at least can stretch 5%, not easy to crack, tensile strength further improves, simultaneously, also make twisted wire be difficult for producing oxidation, assurance electric conductivity is good.Because the temperature of twisted wire after annealing is very high, the processing that need to cool, makes conductor inner core after preferably cooling through 16 hours.
Step 3: insulating material is coated operation, adopts default insulation thickness, at conductor inner core outer cladding insulating material, makes insulating outer layer.Insulation thickness, can select according to the requirement of wire rod, conventionally pre-sets, and can adopt insulating material extruder, adopts and extrudes technique extrusion cladding insulating material outside conductor inner core, makes insulating outer layer.
The cable that the model of take is below 16/0.16AS+1/1500D PET is example, and the manufacture method of the tensile cable that the embodiment of the present invention is provided is elaborated.
The name meaning of 16/0.16AS+1/1500D PET model: 16 finger 16 wires, the wire diameter of 0.16 finger metal wire is 0.16mm, AS refers to that metal wire is naked copper twisted wire, 11, finger PET line, 1500D refers to the model of PET line.
Step 1: wire stranding;
Adopt double-deck separated time web plate, default lay is that 15-20mm carries out twisted wire making.First 16 bare copper wires are passed respectively to the separated time hole on ground floor separated time web plate, then 5 bare copper wires are passed to the separated time hole on second layer separated time web plate, the centre bore by PET line through second layer separated time web plate.After double-deck separated time web plate, make bare copper wire can envelope PET line, then the strand system of passing through stranding machine, by bare copper wire with PET line is stranded is integrated, thereby obtain naked copper twisted wire.
Step 2: annealing and refrigerating work procedure;
In order to make twisted wire there is enough pliabilities, prevent distortion, cracking, need pair twist zygonema to carry out annealing in process, owing to will guaranteeing that PET material can not melt, and need to select suitable annealing temperature.The annealing temperature of the epimere of annealing furnace, stage casing and hypomere all can be set to 280 ℃, annealing time is set to 100 minutes.After annealed processing, make the single-wire of twisted wire be stretchable to few 5%.Because the temperature of twisted wire after annealing is very high, need to carry out cooling processing, preferably need cooling 16 hours, thereby obtain conductor inner core.
Step 3: insulating material is coated operation.
Adopt default insulation thickness, the conductor inner core outer cladding insulating material obtaining in step 2, makes insulating outer layer.Can adopt insulating material extruder, utilize and extrude technique, extrusion cladding insulating material, for example PVC outside conductor inner core.The minimum insulation thickness of the desired insulating material of this line style is 0.69mm, and average insulation thickness is 0.76mm, after extrusion cladding PVC insulating material, makes the finished product that external diameter is the tensile cable of 2.50+0.08mm.
Following table is common UL CXTW22AWG cable, adds the tensile strength contrast table after 1500DPET with this cable conductor inner core:
As seen from the above table, UL CXTW22AWG cable is after conductor inner core adds PET, and the pulling force can bear is more than doubled.Therefore, adopt metal wire and the thread twisted wire of PET as the cable of conductor inner core, tensile strength is significantly improved.
The tensile cable that the method that the employing embodiment of the present invention provides is manufactured, guaranteeing, under the prerequisite of cable conduction performance, effectively to have improved the tensile property of cable, makes cable be difficult for fracture damage, durable.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually referring to, each embodiment stresses is the difference with other embodiment.Especially, for system embodiment, because it is substantially similar in appearance to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.System embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a tensile cable, is characterized in that, comprising:
Insulating outer layer and conductor inner core, described insulating outer layer is coated described conductor inner core;
Described conductor inner core is by many wires and at least one stranded twisted wire forming of PET line.
2. tensile cable according to claim 1, is characterized in that:
Described PET line is positioned at the center of described twisted wire, and described many wires carry out multilayer around described PET line and arrange.
3. tensile cable according to claim 2, is characterized in that:
Described many wires carry out two-layer arranging around described PET line.
4. according to the tensile cable described in claims 1 to 3 any one, it is characterized in that:
Described metal wire is copper cash or aluminum steel, and the material of described insulating outer layer is PVC.
5. a tensile cable manufacture method, is characterized in that, comprising:
Adopt default lay to carry out many wires and at least one PET line stranded, make twisted wire;
Described twisted wire is annealed in annealing furnace, then carry out coolingly, make conductor inner core;
Adopt default insulation thickness, at described conductor inner core outer cladding insulating material, make insulating outer layer.
6. method according to claim 5, is characterized in that:
The annealing temperature of described annealing furnace is 260～280 ℃, and annealing time is 90～110 minutes;
Be at least 16 hours the cooling time in described cooling procedure.
7. method according to claim 5, is characterized in that:
The annealing temperature of described annealing furnace is 280 ℃, and described annealing time is 100 minutes;
Be 16 hours the cooling time in described cooling procedure.
8. according to the method described in claim 5 to 7 any one, it is characterized in that:
Described many wires and at least one PET line are carried out stranded before, described many wires are arranged on a plurality of separated time web plates, PET line is arranged to the central hole of innermost layer separated time web plate, makes PET line be positioned at center, many wires carry out multilayer around described PET line and arrange.
9. method according to claim 8, is characterized in that:
Described separated time web plate is two, and described many wires carry out two-layer arranging around described PET line.
10. according to the method described in claim 5 to 7 any one, it is characterized in that:
Employing extrudes technique at described conductor inner core outer cladding insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310596921.4A CN103680693B (en) | 2013-11-22 | 2013-11-22 | Tensile Christmas light wire and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310596921.4A CN103680693B (en) | 2013-11-22 | 2013-11-22 | Tensile Christmas light wire and method for manufacturing same |
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| CN103680693A true CN103680693A (en) | 2014-03-26 |
| CN103680693B CN103680693B (en) | 2017-01-11 |
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| CN201310596921.4A Active CN103680693B (en) | 2013-11-22 | 2013-11-22 | Tensile Christmas light wire and method for manufacturing same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9140438B2 (en) | 2013-09-13 | 2015-09-22 | Willis Electric Co., Ltd. | Decorative lighting with reinforced wiring |
| US9157588B2 (en) | 2013-09-13 | 2015-10-13 | Willis Electric Co., Ltd | Decorative lighting with reinforced wiring |
| US10711954B2 (en) | 2015-10-26 | 2020-07-14 | Willis Electric Co., Ltd. | Tangle-resistant decorative lighting assembly |
| US11306881B2 (en) | 2013-09-13 | 2022-04-19 | Willis Electric Co., Ltd. | Tangle-resistant decorative lighting assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9140438B2 (en) | 2013-09-13 | 2015-09-22 | Willis Electric Co., Ltd. | Decorative lighting with reinforced wiring |
| US9157588B2 (en) | 2013-09-13 | 2015-10-13 | Willis Electric Co., Ltd | Decorative lighting with reinforced wiring |
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| US9671097B2 (en) | 2013-09-13 | 2017-06-06 | Willis Electric Co., Ltd. | Decorative lighting with reinforced wiring |
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| US10578289B2 (en) | 2013-09-13 | 2020-03-03 | Willis Electric Co., Ltd. | Decorative lighting with reinforced wiring |
| US10718475B2 (en) | 2013-09-13 | 2020-07-21 | Willis Electric Co., Ltd. | Tangle-resistant decorative lighting assembly |
| US11306881B2 (en) | 2013-09-13 | 2022-04-19 | Willis Electric Co., Ltd. | Tangle-resistant decorative lighting assembly |
| US10711954B2 (en) | 2015-10-26 | 2020-07-14 | Willis Electric Co., Ltd. | Tangle-resistant decorative lighting assembly |
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| CN103680693B (en) | 2017-01-11 |
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