Three-core cable and preparation method thereof
Technical field
The invention belongs to technical field of electric wires and cables, especially three-core cable and preparation method thereof.
Background technology
In the prior art; Cable is widely used; 3 core cables commonly used are as depicted in figs. 1 and 2; Fig. 1 is a schematic perspective view, and Fig. 2 is the front view of Fig. 1, this cable be by first insulated wire cores of parallel placement or mutual stranded placement, second insulated wire cores and the 3rd insulated wire cores, and the integral coating restrictive coating 5 of living three insulated wire cores constitute; First insulated wire cores is made up of first insulating barrier 11 that is positioned at the first inner conductor 12 and envelopes first conductor; Second insulated wire cores is made up of second insulating barrier 21 that is positioned at the second inner conductor 22 and envelopes second conductor; The 3rd insulated wire cores is made up of the 3rd insulating barrier 31 that is positioned at the 3rd inner conductor 32 and envelopes the 3rd conductor.Because this kind cable is used for transmitting electric load; In order to reach insulating requirements, common first insulating barrier, second insulating barrier and the 3rd insulating barrier need reach the thickness of industry standard regulation, under the same voltage withstand class; Along with the increase of ampacity, the thickness of insulating barrier must thicken; On the other hand, have certain mechanical strength and anti-wear performance in order to make cable, so restrictive coating also need reach certain thickness.Therefore, the cost of this kind cable is higher.On the one hand, the conductor of this kind cable forms by tiny wire is stranded again, and a cable need be made through 3 synnemas, 3 minor insulation cores, 1 sheath extrudes so produce; Because the speed that insulated wire cores is made is slower, therefore, has restricted speed of production.
Summary of the invention
In order to address the above problem, one of the object of the invention provides the cheaper three-core cable of a kind of cost; Two of the object of the invention is that the insulated wire cores making step that reduces cable makes speed of production faster; Three of the object of the invention is the manufacture methods that disclose this kind cable, and they adopt following technical scheme to realize:
A kind of three-core cable includes first conductor 12, second conductor 22, the 3rd conductor 32 and restrictive coating 5; It is characterized in that also comprising one is positioned at central authorities and is columniform obturator 1, one piece first isolating bar 61, one piece second isolating bar 62, the 3rd isolating bar 63; First conductor, second conductor, the 3rd conductor, first isolating bar, second isolating bar, the 3rd isolating bar all are close to obturator; First isolating bar, second isolating bar, the 3rd isolating bar are kept apart first conductor, second conductor and the 3rd conductor, and first isolating bar terminal is close to the second conductor head end mutually, second conductor ends is with the second isolating bar head end is close to mutually, second isolating bar terminally is close to the 3rd conductor head end mutually, the 3rd conductor ends and the 3rd isolating bar head end is close to mutually, the 3rd isolating bar end and the first conductor head end is close to mutually, first conductor ends and the first isolating bar head end are close to mutually; On arbitrary cross section, the upper surface 611 of first isolating bar and lower surface 612 all equate with the curvature of lower surface 612 to the center curvature and the upper surface 611 of obturator; On arbitrary cross section, the upper surface of second isolating bar all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of the 3rd isolating bar all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of first conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of second conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of the 3rd conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; Restrictive coating envelopes first isolating bar, second isolating bar, the 3rd isolating bar, first conductor, second conductor and the 3rd conductor.
Above-mentioned described three-core cable it is characterized in that also being coated with protective layer outside first isolating bar, second isolating bar, the 3rd isolating bar, first conductor, second conductor and the 3rd conductor, and protective layer is positioned within the restrictive coating.
Above-mentioned described three-core cable is characterized in that said protective layer is mica tape or PVC band or PP band.
A kind of three-core cable includes first conductor 12, second conductor 22, the 3rd conductor 32 and restrictive coating 5; It is characterized in that also comprising one is positioned at central authorities and is columniform obturator 1, one piece first isolating bar 61, one piece second isolating bar 62, the 3rd isolating bar 63; First conductor, second conductor, the 3rd conductor, first isolating bar, second isolating bar, the 3rd isolating bar all are close to obturator; First isolating bar, second isolating bar, the 3rd isolating bar are kept apart first conductor, second conductor and the 3rd conductor, and first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, first conductor are close to successively mutually; First isolating bar, second isolating bar, the 3rd isolating bar and restrictive coating are formed in one; First isolating bar, second isolating bar, the 3rd isolating bar protrude to the obturator direction from the inwall of restrictive coating; Restrictive coating envelopes first conductor, second conductor and the 3rd conductor; On arbitrary cross section, the curvature on the surface that first isolating bar, second isolating bar, the 3rd isolating bar, first conductor, second conductor, the 3rd conductor paste with the outer epiphase of obturator separately equates.
Above-mentioned described any three-core cable, the material that it is characterized in that said obturator are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable, the material that it is characterized in that said first isolating bar are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable, the material that it is characterized in that said second isolating bar are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable, the material that it is characterized in that said the 3rd isolating bar are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable, the material that it is characterized in that said restrictive coating are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable is characterized in that said first conductor is metal bar or the complex that formed by the stranded moulding of many one metal wires.
Above-mentioned described any three-core cable is characterized in that said second conductor is metal bar or the composite conductor that formed by the stranded moulding of many one metal wires.
Above-mentioned described any three-core cable is characterized in that said the 3rd conductor is metal bar or the composite conductor that formed by the stranded moulding of many one metal wires.
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Form the step of second isolating bar through plastic extruding machine;
Form the step of the 3rd isolating bar through plastic extruding machine;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Form the step of second isolating bar through plastic extruding machine;
Form the step of the 3rd isolating bar through plastic extruding machine;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; At first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar outerwrap one protective layer; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Through first isolating bar being cut the step that forms second isolating bar: first isolating bar is cut formation second isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is second isolating bar;
Through second isolating bar being cut the step that forms the 3rd isolating bar: second isolating bar is cut formation the 3rd isolating bar along symmetry axis perhaps the 3rd isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is the 3rd isolating bar;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Through first isolating bar being cut the step that forms second isolating bar: first isolating bar is cut formation second isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is second isolating bar;
Through first isolating bar being cut the step that forms the 3rd isolating bar: first isolating bar is cut formation the 3rd isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is the 3rd isolating bar;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Through first isolating bar being cut the step that forms second isolating bar: first isolating bar is cut formation second isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is second isolating bar;
Through second isolating bar being cut the step that forms the 3rd isolating bar: second isolating bar is cut formation the 3rd isolating bar along symmetry axis perhaps the 3rd isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is the 3rd isolating bar;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; At first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar outerwrap one protective layer; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Through first isolating bar being cut the step that forms second isolating bar: first isolating bar is cut formation second isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is second isolating bar;
Through first isolating bar being cut the step that forms the 3rd isolating bar: first isolating bar is cut formation the 3rd isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is the 3rd isolating bar;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; At first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar outerwrap one protective layer; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of three-core cable: mould is installed on the sheath plastic extruding machine; Obturator is placed the filling body opening that is arranged in mould central authorities; First conductor, second conductor, the 3rd conductor are placed on respectively among first conductor bores, second conductor bores and the 3rd conductor bores of mould; First conductor bores, second conductor bores and the 3rd conductor bores all are positioned at fills the body opening outside; First conductor bores, second conductor bores and the 3rd conductor bores are disconnected mutually; First conductor bores, second conductor bores, the 3rd conductor bores and filling body opening do not communicate; Form wall body of filling body opening and the wall body that forms first conductor bores and connect together, form wall body of filling body opening and the wall body that forms second conductor bores and connect together, form wall body of filling body opening and the wall body that forms the 3rd conductor bores and connect together; And a gap is arranged between the wall body of the wall body of first conductor bores and second conductor bores; A gap is arranged between the wall body of the wall body of second conductor bores and the 3rd conductor bores, a gap is arranged between the wall body of the wall body of the 3rd conductor bores and first conductor bores, sheath is extruded on first conductor, second conductor and the 3rd conductor when forming restrictive coating; The gap has formed first isolating bar, second isolating bar and the 3rd isolating bar, and three isolating bars are separated by first conductor, second conductor and the 3rd conductor; First isolating bar, second isolating bar, the 3rd isolating bar and restrictive coating are one.
In the product of the present invention; First conductor, second conductor and the 3rd conductor synnema shaping are formed unique shape and separated by first isolating bar, second isolating bar and the 3rd isolating bar; Extrusion molding restrictive coating outside again; Therefore the consumption of restrictive coating significantly reduces among the present invention, and the product external diameter is littler, cost is lower.The inventive method is simple, and operation is few, and has omitted slow-paced insulated wire cores manufacturing process, so speed of production is faster, production cost is lower.
The present invention has following beneficial effect: the consumption of product restrictive coating is few, and external diameter is thinner, space hold still less, each item cost is lower, production process is simpler, speed is faster.
Description of drawings
Fig. 1 is the part schematic perspective view of the three-core cable of prior art;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the perspective view that embodiment 1 local solution of the present invention is cut open;
Fig. 4 is the perspective view of the partly cut-away of first isolating bar used in the embodiment 1 of the present invention;
Fig. 5 is the front view after Fig. 4 amplifies;
Fig. 6 is the front view after Fig. 3 amplifies;
Fig. 7 is the perspective view that embodiment 2 local solutions of the present invention are cut open.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.Embodiment 1, embodiment 2 are the embodiment of product of the present invention; Embodiment 3~embodiment 9 is the embodiment of the inventive method.
Embodiment 1
Ask for an interview Fig. 3 to Fig. 6, and combine Fig. 1 and Fig. 2, a kind of three-core cable includes first conductor 12, second conductor 22, the 3rd conductor 32 and restrictive coating 5; It is characterized in that also comprising one is positioned at central authorities and is columniform obturator 1, one piece first isolating bar 61, one piece second isolating bar 62, the 3rd isolating bar 63; First conductor, second conductor, the 3rd conductor, first isolating bar, second isolating bar, the 3rd isolating bar all are close to obturator; First isolating bar, second isolating bar, the 3rd isolating bar are kept apart first conductor, second conductor and the 3rd conductor, and first isolating bar terminal is close to the second conductor head end mutually, second conductor ends is with the second isolating bar head end is close to mutually, second isolating bar terminally is close to the 3rd conductor head end mutually, the 3rd conductor ends and the 3rd isolating bar head end is close to mutually, the 3rd isolating bar end and the first conductor head end is close to mutually, first conductor ends and the first isolating bar head end are close to mutually; On arbitrary cross section, the upper surface 611 of first isolating bar and lower surface 612 all equate with the curvature of lower surface 612 to the center curvature and the upper surface 611 of obturator; On arbitrary cross section, the upper surface of second isolating bar all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of the 3rd isolating bar all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of first conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of second conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of the 3rd conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; Restrictive coating envelopes first isolating bar, second isolating bar, the 3rd isolating bar, first conductor, second conductor and the 3rd conductor.
Above-mentioned described three-core cable it is characterized in that also being coated with protective layer outside first isolating bar, second isolating bar, the 3rd isolating bar, first conductor, second conductor and the 3rd conductor, and protective layer is positioned within the restrictive coating.
Above-mentioned described three-core cable is characterized in that said protective layer is mica tape or PVC band or PP band.
Embodiment 2
Ask for an interview Fig. 7, and combine Fig. 1 to Fig. 6, a kind of three-core cable includes first conductor 12, second conductor 22, the 3rd conductor 32 and restrictive coating 5; It is characterized in that also comprising one is positioned at central authorities and is columniform obturator 1, one piece first isolating bar 61, one piece second isolating bar 62, the 3rd isolating bar 63; First conductor, second conductor, the 3rd conductor, first isolating bar, second isolating bar, the 3rd isolating bar all are close to obturator; First isolating bar, second isolating bar, the 3rd isolating bar are kept apart first conductor, second conductor and the 3rd conductor, and first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, first conductor are close to successively mutually; First isolating bar, second isolating bar, the 3rd isolating bar and restrictive coating are formed in one; First isolating bar, second isolating bar, the 3rd isolating bar protrude to the obturator direction from the inwall of restrictive coating; Restrictive coating envelopes first conductor, second conductor and the 3rd conductor; On arbitrary cross section, the curvature on the surface that first isolating bar, second isolating bar, the 3rd isolating bar, first conductor, second conductor, the 3rd conductor paste with the outer epiphase of obturator separately equates.
Above-mentioned described any three-core cable, the material that it is characterized in that said obturator are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable, the material that it is characterized in that said first isolating bar are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable, the material that it is characterized in that said second isolating bar are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable, the material that it is characterized in that said the 3rd isolating bar are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable, the material that it is characterized in that said restrictive coating are flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or gather low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Above-mentioned described any three-core cable is characterized in that said first conductor is metal bar or the complex that formed by the stranded moulding of many one metal wires.
Above-mentioned described any three-core cable is characterized in that said second conductor is metal bar or the composite conductor that formed by the stranded moulding of many one metal wires.
Above-mentioned described any three-core cable is characterized in that said the 3rd conductor is metal bar or the composite conductor that formed by the stranded moulding of many one metal wires.
Above-mentioned described any three-core cable, it is characterized in that said first isolating bar, second isolating bar and the cross section of the 3rd isolating bar can be complete identical or only have two identical or for mutually different.
Following table is the comparison of the typical outer diameter and the prior art of a kind of scheme of the present invention, from table, can find out, the present invention has advantage aspect the taking of space, and in addition, through accurate Calculation, cost can be practiced thrift greatly.
Embodiment 3
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Form the step of second isolating bar through plastic extruding machine;
Form the step of the 3rd isolating bar through plastic extruding machine;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
Embodiment 4
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Form the step of second isolating bar through plastic extruding machine;
Form the step of the 3rd isolating bar through plastic extruding machine;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; At first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar outerwrap one protective layer; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
Embodiment 5
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Through first isolating bar being cut the step that forms second isolating bar: first isolating bar is cut formation second isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is second isolating bar;
Through second isolating bar being cut the step that forms the 3rd isolating bar: second isolating bar is cut formation the 3rd isolating bar along symmetry axis perhaps the 3rd isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is the 3rd isolating bar;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
Embodiment 6
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Through first isolating bar being cut the step that forms second isolating bar: first isolating bar is cut formation second isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is second isolating bar;
Through first isolating bar being cut the step that forms the 3rd isolating bar: first isolating bar is cut formation the 3rd isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is the 3rd isolating bar;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
Embodiment 7
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Through first isolating bar being cut the step that forms second isolating bar: first isolating bar is cut formation second isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is second isolating bar;
Through second isolating bar being cut the step that forms the 3rd isolating bar: second isolating bar is cut formation the 3rd isolating bar along symmetry axis perhaps the 3rd isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is the 3rd isolating bar;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; At first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar outerwrap one protective layer; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
Embodiment 8
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of first isolating bar through plastic extruding machine;
Through first isolating bar being cut the step that forms second isolating bar: first isolating bar is cut formation second isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is second isolating bar;
Through first isolating bar being cut the step that forms the 3rd isolating bar: first isolating bar is cut formation the 3rd isolating bar along symmetry axis perhaps the first isolating bar after-combustion is coiled on tool to another, cut off during to certain-length, remaining is the 3rd isolating bar;
Mould through being installed on the sheath plastic extruding machine places central authorities with obturator; It is outer and be close to obturator that first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar are placed on obturator successively; At first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar outerwrap one protective layer; Outside first conductor, first isolating bar, second conductor, second isolating bar, the 3rd conductor, the 3rd isolating bar, extrude simultaneously the step of restrictive coating.
Embodiment 9
A kind of method of making three-core cable is characterized in that it comprises step:
The moulding of many one metal wires synnema is formed first conductor, the moulding of other many one metal wires synnema is formed second conductor, the moulding of other many one metal wires synnema formed the step of the 3rd conductor again;
Form the step of obturator through plastic extruding machine;
Form the step of three-core cable: mould is installed on the sheath plastic extruding machine; Obturator is placed the filling body opening that is arranged in mould central authorities; First conductor, second conductor, the 3rd conductor are placed on respectively among first conductor bores, second conductor bores and the 3rd conductor bores of mould; First conductor bores, second conductor bores and the 3rd conductor bores all are positioned at fills the body opening outside; First conductor bores, second conductor bores and the 3rd conductor bores are disconnected mutually; First conductor bores, second conductor bores, the 3rd conductor bores and filling body opening do not communicate; Form wall body of filling body opening and the wall body that forms first conductor bores and connect together, form wall body of filling body opening and the wall body that forms second conductor bores and connect together, form wall body of filling body opening and the wall body that forms the 3rd conductor bores and connect together; And a gap is arranged between the wall body of the wall body of first conductor bores and second conductor bores; A gap is arranged between the wall body of the wall body of second conductor bores and the 3rd conductor bores, a gap is arranged between the wall body of the wall body of the 3rd conductor bores and first conductor bores, sheath is extruded on first conductor, second conductor and the 3rd conductor when forming restrictive coating; The gap has formed first isolating bar, second isolating bar and the 3rd isolating bar, and three isolating bars are separated by first conductor, second conductor and the 3rd conductor; First isolating bar, second isolating bar, the 3rd isolating bar and restrictive coating are one.
In the product of the present invention; First conductor, second conductor and the 3rd conductor synnema shaping are formed unique shape and separated by first isolating bar, second isolating bar and the 3rd isolating bar; Extrusion molding restrictive coating outside again; Therefore the consumption of restrictive coating significantly reduces among the present invention, and the product external diameter is littler, cost is lower.The inventive method is simple, and operation is few, and has omitted slow-paced insulated wire cores manufacturing process, so speed of production is faster, production cost is lower.
The present invention has following beneficial effect: the consumption of product restrictive coating is few, and external diameter is thinner, space hold still less, each item cost is lower, production process is simpler, speed is faster.
The present invention is not limited to above-mentioned preferred forms, should be appreciated that design of the present invention can be by other various forms enforcement utilizations, and they drop in protection scope of the present invention equally.