Summary of the invention
In order to address the above problem, one of the purpose of this utility model is to disclose a kind of easy structure cable.
For achieving the above object, the utility model is realized by the following technical solutions.
A kind of easy structure cable, it is to be made of many conductors, restrictive coating that conductor is enveloped; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors.
Easy structure cable described above is characterized in that described conductor is single copper bar or single aluminium bar or the single body of rod with two or more metal composite formation.
Easy structure cable described above is characterized in that described conductor is the many electric conductors that metallic rod body is stranded or binding forms.
Easy structure cable described above, the cross section that it is characterized in that described conductor are circle or part annular or fan annular.
Easy structure cable described above is characterized in that the cross-sectional area of described conductor is for that equate or that do not equate entirely or unequal entirely.
Easy structure cable described above, when the cross section of conductor is circle, on arbitrary cross section of cable, the center of circle that it is characterized in that described all conductors be positioned on the same circumference or have the center of circle of plural conductor to be positioned on the same circumference or the center of circle of all conductors not on same circumference, described circumference is the circumference that the center of circle overlaps with the center of restrictive coating.
Easy structure cable described above is characterized in that the central authorities of described restrictive coating have the light unit, includes an optical fiber in the described smooth unit at least.
Easy structure cable described above is characterized in that described optical fiber is G.652 type or G.653 type or G.654 type or G.655 type or G.656 type or G.657 type or plastic fiber.
Easy structure cable described above is characterized in that having on the described restrictive coating recognition unit for the identification conductor, and described recognition unit is the first different identification bar of shape and the second identification bar; Described identification bar distributes along the restrictive coating outer rim, and is continuous or interrupted distribution.
Easy structure cable described above, the material that it is characterized in that described restrictive coating are polyvinyl chloride or low smoke and zero halogen polyethylene or nylon or low-smoke low-halogen polyethylene or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE).
Easy structure cable described above, the material that it is characterized in that described restrictive coating comprises following component by weight: polyethylene: 82~84 parts, ethene-vinyl acetate co-polymer: 5~7 parts, fire retardant: 5~7 parts, coupling agent: 0.5~1.5 part, antioxidant: 1~3 part, melamine: 0.5~1.5 part, ethyl silicon oil: 0.5~1.5 part, poly dimethyl silicon siloxanes: 1~3 part, titanium dioxide or carbon black: 2~4.5 parts; Described fire retardant is magnesium hydroxide or aluminium hydroxide or sodium acid carbonate; The model that described coupling agent is is TMC-38S; Described antioxidant is the thio-2 acid octadecyl ester.
In the material of above-mentioned restrictive coating, high density polyethylene content has guaranteed insulation and the withstand voltage properties of restrictive coating; Fire retardant makes restrictive coating have fire-retardant, fire resistance; The adding of melamine makes ant, muroid can not injure cable for the second time; Ethyl silicon oil makes the restrictive coating material easily process on the one hand, and it is difficult for and the conductor adhesion, makes the easier processing of protective cover material and extrusion molding simultaneously; Poly dimethyl silicon siloxanes makes restrictive coating material work in-process bubble can not occur; Titanium dioxide or carbon black make restrictive coating have anti-ultraviolet function, also can keep the ESCR performance for a long time under high light.
Insulation, proof voltage, anti-ant, fire-retardant, fire resistance.In this cable, when adopting stranded conductor, product is soft, and easier continuing laid with construction.
A kind of easy structure cable is characterized in that it is made by the following method to obtain:
The first step: synnema step: in a synnema machine, many metallic rod bodies are formed a conductor by stranded or binding; Form many conductors by synnema repeatedly;
Second step: distraction step: the first location hole that passes respectively on the jig of many conductors with the first step obtains, pass the mistake conductor bores on the core rod again, then draw conductor and enter tank; Wherein the location hole on the jig is disconnected mutually in twos, and location hole is parallel to each other excessively; Described core rod is installed on the head of plastic extruding machine; Mistake conductor bores on the core rod is disconnected mutually in twos, and conductor bores is parallel to each other excessively; The edge of crossing conductor bores is positioned within the core rod outward flange;
The 3rd step: the extrusion molding step: after conductor draws tank, open plastic extruding machine, the restrictive coating material of thawing enters by extrusion head in the gap of core rod and die sleeve, by fashion of extrusion sheath material is extruded outside conductor; Wherein, the internal diameter of die sleeve is greater than the outer peripheral diameter of core rod; The material of described restrictive coating comprises following component by weight: polyethylene: 82~84 parts, ethene-vinyl acetate co-polymer: 5~7 parts, fire retardant: 5~7 parts, coupling agent: 0.5~1.5 part, antioxidant: 1~3 part, melamine: 0.5~1.5 part, ethyl silicon oil: 0.5~1.5 part, poly dimethyl silicon siloxanes: 1~3 part, titanium dioxide or carbon black: 2~4.5 parts; Described fire retardant is magnesium hydroxide or aluminium hydroxide or sodium acid carbonate; The model that described coupling agent is is TMC-38S; Described antioxidant is the thio-2 acid octadecyl ester.
A kind of easy structure cable is characterized in that it is made by the following method to obtain:
The first step: synnema step: in a synnema machine, many metallic rod bodies are formed a conductor by stranded or binding; Many synnema machines are worked simultaneously, form many conductors;
Second step: distraction step: the first location hole that passes respectively on the jig of many conductors with the first step obtains, pass the mistake conductor bores on the core rod again, then draw conductor and enter tank; Wherein the location hole on the jig is disconnected mutually in twos, and location hole is parallel to each other excessively; Described core rod is installed on the head of plastic extruding machine; Mistake conductor bores on the core rod is disconnected mutually in twos, and conductor bores is parallel to each other excessively; The edge of crossing conductor bores is positioned within the core rod outward flange;
The 3rd step: the extrusion molding step: after conductor draws tank, open plastic extruding machine, the restrictive coating material of thawing enters by extrusion head in the gap of core rod and die sleeve, by fashion of extrusion sheath material is extruded outside conductor; Wherein, the internal diameter of die sleeve is greater than the outer peripheral diameter of core rod; The material of described restrictive coating comprises following component by weight: polyethylene: 82~84 parts, ethene-vinyl acetate co-polymer: 5~7 parts, fire retardant: 5~7 parts, coupling agent: 0.5~1.5 part, antioxidant: 1~3 part, melamine: 0.5~1.5 part, ethyl silicon oil: 0.5~1.5 part, poly dimethyl silicon siloxanes: 1~3 part, titanium dioxide or carbon black: 2~4.5 parts; Described fire retardant is magnesium hydroxide or aluminium hydroxide or sodium acid carbonate; The model that described coupling agent is is TMC-38S; Described antioxidant is the thio-2 acid octadecyl ester.
A kind of easy structure cable is characterized in that it is made by the following method to obtain:
The first step: distraction step: with the first location hole that passes respectively on the jig of many conductors, pass the mistake conductor bores on the core rod again, then draw conductor and enter tank; Wherein the location hole on the jig is disconnected mutually in twos, and location hole is parallel to each other excessively; Described core rod is installed on the head of plastic extruding machine; Mistake conductor bores on the core rod is disconnected mutually in twos, and conductor bores is parallel to each other excessively; The edge of crossing conductor bores is positioned within the core rod outward flange; Wherein, described conductor is single copper bar or single aluminium bar or the single body of rod with two or more metal composite formation;
Second step: the extrusion molding step: after conductor draws tank, open plastic extruding machine, the restrictive coating material of thawing enters by extrusion head in the gap of core rod and die sleeve, by fashion of extrusion sheath material is extruded outside conductor; Wherein, the internal diameter of die sleeve is greater than the outer peripheral diameter of core rod; The material of described restrictive coating comprises following component by weight: polyethylene: 82~84 parts, ethene-vinyl acetate co-polymer: 5~7 parts, fire retardant: 5~7 parts, coupling agent: 0.5~1.5 part, antioxidant: 1~3 part, melamine: 0.5~1.5 part, ethyl silicon oil: 0.5~1.5 part, poly dimethyl silicon siloxanes: 1~3 part, titanium dioxide or carbon black: 2~4.5 parts; Described fire retardant is magnesium hydroxide or aluminium hydroxide or sodium acid carbonate; The model that described coupling agent is is TMC-38S; Described antioxidant is the thio-2 acid octadecyl ester.
Cable in the utility model only has conductor and restrictive coating, and therefore, structure is simpler, the outside diameter of cable of same specification is littler, material cost is lower; Simultaneously owing to lacked isolation step, therefore, makes convenient, make in the machinery equipment input still less, manually/power consumption more saves; Therefore manufacturing cost is lower; In the utility model, the existence of recognition unit can not have insulating barrier and not have can to identify the accurate position of conductor in the cable under the situation of color identification yet, the existence of recognition unit not only can make conductor identify, and has reduced cost effectively because consumptive material reduces; The existence of light unit in the utility model makes cable not only have the function of transmission of electricity, and can reach for signal monitoring by transmitting optical signal, has enlarged the scope of application of cable widely.In the utility model, because the special formulation of cable sheath material makes cable have better insulation, proof voltage, anti-ant, fire-retardant, fire resistance.In this cable, when adopting stranded conductor, product is soft, and easier continuing laid with construction.
Therefore, the utlity model has following main beneficial effect: product structure is simpler, cost is lower, it is easier to make, make in equipment drop into still less.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, embodiment 1~embodiment 9 is the embodiment of the utility model cable, and embodiment 10~embodiment 12 is the embodiment of the manufacture method of the utility model cable.
Embodiment 1
See also Fig. 1, a kind of easy structure cable, it is to be made of four conductors 1, restrictive coating 2 that conductor is enveloped; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors; Conductor is single copper bar or single aluminium bar or the single body of rod with two or more metal composite formation; The cross section of conductor is circular; The cross-sectional area of conductor is what equate.
Embodiment 2
See also Fig. 2, a kind of easy structure cable, it is to be made of four conductors, restrictive coating 2 that conductor is enveloped; Described four conductors are first conductor 11, second conductor 12, the 3rd conductor 13 and the 4th conductor 14; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors; Conductor is single copper bar or single aluminium bar or the single body of rod with two or more metal composite formation; The cross section of conductor is circular; The cross-sectional area of conductor is what equate; On arbitrary cross section of cable, the center of circle of all conductors is positioned on the same circumference 3, and described circumference is the circumference that the center of circle overlaps with the center of restrictive coating.
Embodiment 3
See also Fig. 3, a kind of easy structure cable, it is to be made of four conductors, restrictive coating 2 that conductor is enveloped; Described four conductors are first conductor 11, second conductor 12, the 3rd conductor 13 and the 4th conductor 14; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors; Conductor is single copper bar or single aluminium bar or the single body of rod with two or more metal composite formation; The cross section of conductor is circular; The cross-sectional area of conductor is not equate entirely, and namely the cross-sectional area of second conductor, the 3rd conductor, the 4th conductor equates, but the cross-sectional area of the cross-sectional area of second conductor and first conductor is unequal; On arbitrary cross section of cable, the center of circle of all conductors has the center of circle of the conductor more than three to be positioned on the same circumference 3, namely the center of circle of second conductor, the 3rd conductor, the 4th conductor is positioned on the same circumference 3, and the center of circle of first conductor is not positioned on the circumference 3, and described circumference is the circumference that the center of circle overlaps with the center of restrictive coating.
Certainly, above-mentioned embodiment 1~embodiment 3 described any one easy structure cables, described conductor is not limited to four, can be two, three, five or other many.
Certainly, above-mentioned embodiment 1~embodiment 3 described any one easy structure cables, the cross-sectional area of described conductor can be complete equal or that do not equate entirely or unequal entirely.
Certainly, above-mentioned embodiment 1~embodiment 3 described any one easy structure cables, on arbitrary cross section of cable, the center of circle that it is characterized in that described all conductors be positioned on the same circumference or have the center of circle of plural conductor to be positioned on the same circumference or the center of circle of all conductors not on same circumference, described circumference is the circumference that the center of circle overlaps with the center of restrictive coating.
Certainly, above-mentioned embodiment 1~embodiment 3 described any one easy structure cables is characterized in that the cross section of described conductor also can be ellipse or other shape.
Embodiment 4
See also Fig. 4, a kind of easy structure cable, it is to be made of four conductors 1, restrictive coating 2 that conductor is enveloped; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors; Conductor is the many electric conductors that metallic rod body is stranded or binding forms; The cross section of conductor is circular; The cross-sectional area of conductor is what equate.
Certainly, easy structure cable described above, it can also be to be made of four conductors, restrictive coating 2 that conductor is enveloped as implementing example 2; Described four conductors are first conductor 11, second conductor 12, the 3rd conductor 13 and the 4th conductor 14; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors; Conductor is the many electric conductors that metallic rod body is stranded or binding forms; The cross section of conductor is circular; The cross-sectional area of conductor is what equate; On arbitrary cross section of cable, the center of circle of all conductors is positioned on the same circumference 3, and described circumference is the circumference that the center of circle overlaps with the center of restrictive coating.
Certainly, easy structure cable described above, it can also be by being made of four conductors, restrictive coating 2 that conductor is enveloped as implementing example 2; Described four conductors are first conductor 11, second conductor 12, the 3rd conductor 13 and the 4th conductor 14; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors; Conductor is the many electric conductors that metallic rod body is stranded or binding forms; The cross section of conductor is circular; The cross-sectional area of conductor is not equate entirely, and namely the cross-sectional area of second conductor, the 3rd conductor, the 4th conductor equates, but the cross-sectional area of the cross-sectional area of second conductor and first conductor is unequal; On arbitrary cross section of cable, the center of circle of all conductors has the center of circle of the conductor more than three to be positioned on the same circumference 3, namely the center of circle of second conductor, the 3rd conductor, the 4th conductor is positioned on the same circumference 3, and the center of circle of first conductor is not positioned on the circumference 3, and described circumference is the circumference that the center of circle overlaps with the center of restrictive coating.
Certainly, the easy structure cable described in this embodiment, described conductor are not limited to four, can be two, three, five or other many.
Certainly, the easy structure cable described in this embodiment, the cross-sectional area of described conductor can be complete equal or that do not equate entirely or unequal entirely.
Certainly, easy structure cable described in this embodiment, on arbitrary cross section of cable, the center of circle that it is characterized in that described all conductors be positioned on the same circumference or have the center of circle of plural conductor to be positioned on the same circumference or the center of circle of all conductors not on same circumference, described circumference is the circumference that the center of circle overlaps with the center of restrictive coating.
Certainly, the easy structure cable described in this embodiment is characterized in that the cross section of described conductor also can be ellipse or other shape.
Embodiment 5
See also Fig. 5, a kind of easy structure cable, it is to be made of two conductors 1, restrictive coating 2 that conductor is enveloped; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors; Conductor is the many electric conductors that metallic rod body is stranded or binding forms; The cross section of conductor is the part annular; The cross-sectional area of conductor is what equate.
Certainly, the easy structure cable described in this embodiment, the cross section of described conductor also can be other shape.
Certainly, the easy structure cable described in this embodiment, described conductor also can be three, four, five or other many.
Certainly, the easy structure cable described in this embodiment, the cross-sectional area of described conductor can be equal or that do not equate entirely or unequal entirely.
Certainly, the easy structure cable described in this embodiment, preferably, on arbitrary cross section of cable, the outward flange that it is characterized in that described all conductors on same first circumference, the inward flange of all conductors is on same second circumference; The center of circle of described first circumference, second circumference is that the center with restrictive coating coincides.
Certainly, the easy structure cable described in this embodiment, on arbitrary cross section of cable, it is characterized in that the outward flange of described all conductors can be not on same first circumference, the inward flange of all conductors also can be on same second circumference; The center of circle of described first circumference, second circumference is that the center with restrictive coating coincides.
Embodiment 6
See also Fig. 6, a kind of easy structure cable, it is to be made of three conductors 1, restrictive coating 2 that conductor is enveloped; It is characterized in that having the restrictive coating material between two adjacent arbitrarily conductors; On the cross section of cable, the edge of any conductor all is positioned within the border of restrictive coating; Described many conductors distribute along restrictive coating, and are discontiguous between any two conductors; Conductor is the many electric conductors that metallic rod body is stranded or binding forms; The cross section of conductor is part fan annular; The cross-sectional area of conductor is what equate.
Certainly, the easy structure cable described in this embodiment, the cross section of described conductor also can be other shape.
Certainly, the easy structure cable described in this embodiment, described conductor also can be two, four, five or other many.
Embodiment 7
See also Fig. 7, a kind of easy structure cable, substantially with embodiment 6, difference is: the cross-sectional area of described conductor has two for what equate, and another is unequal.
Certainly, further, described conductor also can be two, four, five or other many; The cross-sectional area of described conductor can be complete equal or that do not equate entirely or unequal entirely.
Certainly, above-mentioned embodiment 6~embodiment 7 described any one easy structure cables, preferably, on arbitrary cross section of cable, the outward flange that it is characterized in that described all conductors on same first circumference, the inward flange of all conductors is on same second circumference; The center of circle of described first circumference, second circumference is that the center with restrictive coating coincides.
Certainly, above-mentioned embodiment 6~embodiment 7 described any one easy structure cables, on arbitrary cross section of cable, it is characterized in that the outward flange of described all conductors can be not on same first circumference, the inward flange of all conductors also can be on same second circumference; The center of circle of described first circumference, second circumference is that the center with restrictive coating coincides.
Embodiment 8
See also Fig. 8, a kind of easy structure cable, substantially with embodiment 6, difference is: the central authorities of described restrictive coating have light unit 4, include three optical fibers 5 in the described smooth unit at least.
Embodiment 9
See also Fig. 9, a kind of easy structure cable, substantially with embodiment 8, difference is: have the recognition unit 6 for the identification conductor on the described restrictive coating, described recognition unit is the first different identification bar 61 of shape and the second identification bar 62; Described identification bar distributes along the restrictive coating outer rim, and is continuous or interrupted distribution; The cross section of the described first identification bar is that the cross section of triangle, the second identification bar is trapezoidal.
Certainly, described above first identification bar also can be other shape, second identification bar also can be other shape; Have the purpose that different shapes or different sizes can reach identification so long as the first identification bar and second is identified bar, as number in the figure 1 be first conductor, clockwise that conductor of being close to is called second conductor, that counterclockwise conductor of being close to is called the 3rd conductor; When having other a plurality of conductor can and the like; Another end face at cable then has opposite order; Can realize like this continuing exactly and distinguishing conductor.
The described easy structure cable of above-mentioned arbitrary embodiment is characterized in that the central authorities of described restrictive coating all can have the light unit, includes an optical fiber in the described smooth unit at least.
Further, easy structure cable described above is characterized in that described optical fiber is G.652 type or G.653 type or G.654 type or G.655 type or G.656 type or G.657 type or plastic fiber.
The described easy structure cable of above-mentioned arbitrary embodiment is characterized in that all can having on the described restrictive coating recognition unit for the identification conductor, and described recognition unit is the first different identification bar of shape and/or size and the second identification bar; Described identification bar distributes along the restrictive coating outer rim, and is continuous or interrupted distribution.
The described easy structure cable of above-mentioned arbitrary embodiment is characterized in that the material of described restrictive coating all can be polyvinyl chloride or low smoke and zero halogen polyethylene or nylon or low-smoke low-halogen polyethylene or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE).
The described easy structure cable of above-mentioned arbitrary embodiment, the material that it is characterized in that described restrictive coating comprises following component by weight: polyethylene: 82~84 parts, ethene-vinyl acetate co-polymer: 5~7 parts, fire retardant: 5~7 parts, coupling agent: 0.5~1.5 part, antioxidant: 1~3 part, melamine: 0.5~1.5 part, ethyl silicon oil: 0.5~1.5 part, poly dimethyl silicon siloxanes: 1~3 part, titanium dioxide or carbon black: 2~4.5 parts; Described fire retardant is magnesium hydroxide or aluminium hydroxide or sodium acid carbonate; The model that described coupling agent is is TMC-38S; Described antioxidant is the thio-2 acid octadecyl ester.
The described easy structure cable of above-mentioned arbitrary embodiment is characterized in that the shape of described restrictive coating is not limited to circle, also can be other shape, during as twin core cable, can be 8 fonts; During three-core cable, can be bougainvillea lobe shape; During five-core cable, can be plum blossom lobe shape; Etc., can more save the restrictive coating material like this, more save the cost of cable.
Embodiment 10
A kind of easy structure cable is characterized in that it is made by the following method to obtain:
The first step: synnema step: in a synnema machine, many metallic rod bodies are formed a conductor by stranded or binding; Form many conductors by synnema repeatedly;
Second step: distraction step: the first location hole that passes respectively on the jig of many conductors with the first step obtains, pass the mistake conductor bores on the core rod again, then draw conductor and enter tank; Wherein the location hole on the jig is disconnected mutually in twos, and location hole is parallel to each other excessively; Described core rod is installed on the head of plastic extruding machine; Mistake conductor bores on the core rod is disconnected mutually in twos, and conductor bores is parallel to each other excessively; The edge of crossing conductor bores is positioned within the core rod outward flange;
The 3rd step: the extrusion molding step: after conductor draws tank, open plastic extruding machine, the restrictive coating material of thawing enters by extrusion head in the gap of core rod and die sleeve, by fashion of extrusion sheath material is extruded outside conductor; Wherein, the internal diameter of die sleeve is greater than the outer peripheral diameter of core rod; The material of described restrictive coating comprises following component by weight: polyethylene: 82~84 parts, ethene-vinyl acetate co-polymer: 5~7 parts, fire retardant: 5~7 parts, coupling agent: 0.5~1.5 part, antioxidant: 1~3 part, melamine: 0.5~1.5 part, ethyl silicon oil: 0.5~1.5 part, poly dimethyl silicon siloxanes: 1~3 part, titanium dioxide or carbon black: 2~4.5 parts; Described fire retardant is magnesium hydroxide or aluminium hydroxide or sodium acid carbonate; The model that described coupling agent is is TMC-38S; Described antioxidant is the thio-2 acid octadecyl ester.
Embodiment 11
A kind of easy structure cable is characterized in that it is made by the following method to obtain:
The first step: synnema step: in a synnema machine, many metallic rod bodies are formed a conductor by stranded or binding; Many synnema machines are worked simultaneously, form many conductors;
Second step: distraction step: the first location hole that passes respectively on the jig of many conductors with the first step obtains, pass the mistake conductor bores on the core rod again, then draw conductor and enter tank; Wherein the location hole on the jig is disconnected mutually in twos, and location hole is parallel to each other excessively; Described core rod is installed on the head of plastic extruding machine; Mistake conductor bores on the core rod is disconnected mutually in twos, and conductor bores is parallel to each other excessively; The edge of crossing conductor bores is positioned within the core rod outward flange;
The 3rd step: the extrusion molding step: after conductor draws tank, open plastic extruding machine, the restrictive coating material of thawing enters by extrusion head in the gap of core rod and die sleeve, by fashion of extrusion sheath material is extruded outside conductor; Wherein, the internal diameter of die sleeve is greater than the outer peripheral diameter of core rod; The material of described restrictive coating comprises following component by weight: polyethylene: 82~84 parts, ethene-vinyl acetate co-polymer: 5~7 parts, fire retardant: 5~7 parts, coupling agent: 0.5~1.5 part, antioxidant: 1~3 part, melamine: 0.5~1.5 part, ethyl silicon oil: 0.5~1.5 part, poly dimethyl silicon siloxanes: 1~3 part, titanium dioxide or carbon black: 2~4.5 parts; Described fire retardant is magnesium hydroxide or aluminium hydroxide or sodium acid carbonate; The model that described coupling agent is is TMC-38S; Described antioxidant is the thio-2 acid octadecyl ester.
Embodiment 12
A kind of easy structure cable is characterized in that it is made by the following method to obtain:
The first step: distraction step: with the first location hole that passes respectively on the jig of many conductors, pass the mistake conductor bores on the core rod again, then draw conductor and enter tank; Wherein the location hole on the jig is disconnected mutually in twos, and location hole is parallel to each other excessively; Described core rod is installed on the head of plastic extruding machine; Mistake conductor bores on the core rod is disconnected mutually in twos, and conductor bores is parallel to each other excessively; The edge of crossing conductor bores is positioned within the core rod outward flange; Wherein, described conductor is single copper bar or single aluminium bar or the single body of rod with two or more metal composite formation;
Second step: the extrusion molding step: after conductor draws tank, open plastic extruding machine, the restrictive coating material of thawing enters by extrusion head in the gap of core rod and die sleeve, by fashion of extrusion sheath material is extruded outside conductor; Wherein, the internal diameter of die sleeve is greater than the outer peripheral diameter of core rod; The material of described restrictive coating comprises following component by weight: polyethylene: 82~84 parts, ethene-vinyl acetate co-polymer: 5~7 parts, fire retardant: 5~7 parts, coupling agent: 0.5~1.5 part, antioxidant: 1~3 part, melamine: 0.5~1.5 part, ethyl silicon oil: 0.5~1.5 part, poly dimethyl silicon siloxanes: 1~3 part, titanium dioxide or carbon black: 2~4.5 parts; Described fire retardant is magnesium hydroxide or aluminium hydroxide or sodium acid carbonate; The model that described coupling agent is is TMC-38S; Described antioxidant is the thio-2 acid octadecyl ester.
It should be noted that in the method for the present utility model, also can in distraction step, before the location hole that conductor is passed on the jig, make conductor earlier through the metal material treatment fluid, and online oven dry; Or before the location hole that conductor is passed on the jig, coat oily substance at conductive surface, and like this, just can not be bonded with the restrictive coating material in conductive surface or the stranded gap, can construct more easily and continue like this.
Certainly, can also be before conductor passes mistake conductor bores on the core rod, at outside waterstop or polyester belt or other the suitable band of coating of conductor, just can not be bonded with the restrictive coating material in conductive surface or the stranded gap so yet, can construct more easily and continue like this.
Cable in the utility model only has conductor and restrictive coating, and therefore, structure is simpler, the outside diameter of cable of same specification is littler, material cost is lower; Simultaneously owing to lacked isolation step, therefore, makes convenient, make in the machinery equipment input still less, manually/power consumption more saves; Therefore manufacturing cost is lower; In the utility model, the existence of recognition unit can not have insulating barrier and not have can to identify the accurate position of conductor in the cable under the situation of color identification yet, the existence of recognition unit not only can make conductor identify, and has reduced cost effectively because consumptive material reduces; The existence of light unit in the utility model makes cable not only have the function of transmission of electricity, and can reach for signal monitoring by transmitting optical signal, has enlarged the scope of application of cable widely.In the utility model, because the special formulation of cable sheath material makes cable have better insulation, proof voltage, anti-ant, fire-retardant, fire resistance.In this cable, when adopting stranded conductor, product is soft, and easier continuing laid with construction.
Therefore, the utlity model has following main beneficial effect: product structure is simpler, cost is lower, it is easier to make, make in equipment drop into still less.
The utility model is not limited to above-mentioned preferred forms, should be appreciated that design of the present utility model can be by other various forms enforcement utilizations, and they drop in the protection range of the present utility model equally.