CN101183572A - Shielded cable manufacturing method for engineering equipment - Google Patents

Abstract

The invention discloses a manufacturing method for shielded cable used in engineering facility, which comprises a plurality of procedures that: (1) an insulation layer is molded by extrusion on a conductor to form a conducting wire; (2) at least one wire is provided and a braid layer of copper mesh is braided outside of each conducting wire to form a signal cable for information signal transmission; (3) a plurality of conducting wires are provided as power cords for power signal transmission; (4) the signal cable and the power cord are twisted with to form a cable core; (5) the cable core is coated by a metallic layer to form an outer screen; (6) the outer screen is wrapped with paper to form a paper tape; (7) an outer serving is molded by extrusion with thermoplastic vulcanizate outside of the paper tape. As the signal cables are twisted with the power cores forming a cable core, the invention can meet the requirements of the engineering facility under the harsh conditions of field or workshop operation. The invention has the advantages of good shield effects, anti-ultraviolet, cold-resistance and environmental protection.

Description

Shielded cable manufacturing method for engineering equipment

Technical field

The present invention relates to a kind of cable making method, relate in particular to a kind of shielded cable manufacturing method for engineering equipment.

Background technology

Electric wire has been widely used in the detection of industrial production, communications and transportation, architectural engineering and facility, modern agriculture and scientific research, engineer equipment or military installations, space, ocean at present, and has reached ubiquitous state.Along with socioeconomic activity description is carried out the development of step great-jump-forward from the degree of depth to the range, the electric wire kind is brought in constant renewal in and is perfect, and output continues to increase.For example, building the high-intelligentization building needs for hundreds of, thousands of computer network cable that electronic computer divides cascade network to use; Build the public cable television network in city, the whole city and even all banks of the whole nation banking procedure where deposits and withdrawals are processed at any branch bank, carry out online economic interaction and information interchange etc. and must install the broad band cable net that high reliability transport is used; Realize that the emission of military artillery or antiaircraft artillery group remote control procedure need design the control cable that is fit to field extreme environment.

The application of electric wire mainly is divided into three major types: electric power system, the information transmission system and engineering equipment and instrument and meter system.The electric wire product that electric power system adopts mainly contains built on stilts bare wire, bus-bar (bus), power cable, rubber cover cable, aerial insulated cable), branch cable (replacing the part bus), electromagnetic wire and power equipment be with the electrical equipment electric wire etc.The electric wire that is used for the information transmission system mainly contains local cable, camera cable, electronic cable, radio frequency cable, fiber optic cable, data cable, electromagnetic wire, power communication or other composite cables etc.In engineering equipment, the instrument and meter system except that built on stilts bare wire almost other all products application is all arranged, but mainly be power cable, electromagnetic wire, data cable, instrument and meter cable etc.

In the engineering equipment with intelligent engineering equipment, not only need to use the cable transmission power supply signal, also need information signal with the instruction of cable transport tape, so engineering equipment all has high requirements for the real-time and the accuracy of power supply signal and information signal, in order to improve equipment performance, needing to external world, electric field, the next interference in magnetic field shield.In addition, engineering equipment reaches the workshop usually in the open air with cable and uses, and operational environment very severe, variations in temperature difference are subjected to ultraviolet irradiation greatly and directly, so cable is very easily aging and damaged, thereby causes equipment fault.Simultaneously, the serving of existing conventional cable causes environmental pollution in case aging breakage can produce halogen etc. usually.At present common cable can not satisfy simultaneously that shield effectiveness is good, the engineering equipment of uvioresistant, anti-aging and environmental protection is with several essential conditions of cable.

Therefore, demand providing that a kind of shield effectiveness is good urgently, uvioresistant, anti-aging and environmental protection, and the cable that holding wire and power line twist together is overcome above defective.

Summary of the invention

The object of the present invention is to provide a kind of shielded cable manufacturing method for engineering equipment, the cable that is made by described method twists together holding wire and power line, and shield effectiveness is good, uvioresistant, cold-resistant and environmental protection, can satisfy the required harsh conditions of engineering equipment in field and workshop.

For achieving the above object, technical scheme of the present invention is: provide a kind of manufacture method of shielded cable for engineering apparatus to comprise: (1) is extrusion molding one layer insulating on conductor, forms lead; (2) provide at least one described lead,, form the holding wire of transmit information signals in the peripheral braiding of each this lead copper wire mesh braided layer; (3) provide the power line of some described leads as the transmission power supply signal; (4) described holding wire and described power line are gathered twisted wire and formed the cable cable core; (5) coat described cable cable core with metal level, form outer shielding layer; (6) hold described outer shielding layer with paper tape, form the paper bag belt; And (7) use Thermoplastic Vulcanizate extrusion molding one deck serving outside described paper bag belt.

In one embodiment of the invention, the step that forms outer shielding layer in the step (5) comprises: (51) around described cable cable core, form foil shielding layer with Aluminium Foil Package; And (52) are in the peripheral braiding of described foil shielding layer one deck copper wire mesh braided layer.The coverage rate of described foil shielding layer is 100%, and the coverage rate of described copper wire mesh braided layer is 86%.Described copper wire mesh braided layer can be woven into tinned wird.

Preferably, described copper wire mesh braided layer is directly to be that the copper cash weaving of 0.16mm forms by 112 lines, while the braiding external diameter of described copper wire mesh braided layer is 5.67mm.

Preferably, described insulating barrier is a polyfluorinated ethylene plastic, and described conductor is a tinned wird.

Preferably, described holding wire and power line set twisted wire is to carry out stranded between the lay between the 50mm to 70mm.

Preferably, described paper bag band around to the strand of described holding wire and power line set twisted wire to opposite, the coverage rate of described paper bag belt is greater than 100%.

Compared with prior art, owing to adopt the produced cable of shielded cable manufacturing method for engineering equipment of the present invention, its lead is made up of holding wire and power line, described holding wire is used for the information signal of transmission control equipment work, described power line is used for the equipment that is transmitted as provides the power supply signal of work, make the information signal that a cable both can transmission control equipment work, also can be transmitted as the power supply signal that equipment provides working power, provide cost savings and be convenient to and operate, and the insulating barrier periphery of described holding wire is woven with interior copper wire mesh braided layer, can effectively shield the mutual interference mutually between external interference and holding wire and the power line, described screen coats described cable cable core, described paper bag band coats described screen, the described serving described paper bag band that is covered, can further shield external interference, the serviceability of raising equipment, described serving is a Thermoplastic Vulcanizate, its low smoke and zero halogen, environmental, and uvioresistant, also cold-resistant, therefore cable of the present invention can satisfy engineering equipment in environment abominable field and shopwork conditions needed.

Description of drawings

Fig. 1 is the flow chart of shielded cable manufacturing method for engineering equipment of the present invention.

Fig. 2 is the structure chart with the cable of shielded cable manufacturing method for engineering equipment manufacturing of the present invention.

Fig. 3 is the sectional view of shielded cable for engineering apparatus shown in Figure 2.

Embodiment

With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the present invention aims to provide a kind of shielded cable manufacturing method for engineering equipment, the cable that is produced by this method twists together holding wire and power line, and environmental protection, cold-resistant, uvioresistant also have good shield effectiveness, it can overcome the adverse circumstances in field and workshop and guarantee communication quality, satisfies the several essential conditions of engineering equipment with cable.

As shown in Figure 1, shielded cable manufacturing method for engineering equipment of the present invention comprises the steps: (10) extrusion molding one layer insulating on conductor, forms lead; Wherein conductor adopts tinned wird, and insulating barrier adopts perfluoroethylene-propylene (FEP) plastics; (20) provide at least one described lead,, form internal shield, form the holding wire of transmit information signals in the peripheral braiding of each this lead copper wire mesh braided layer; (30) provide the power line of some described leads as the transmission power supply signal; (40) described holding wire and described power line are gathered twisted wire and formed the cable cable core; Concrete, the described lead six roots of sensation is provided, two of wherein said holding wires, four of described power lines, described holding wire is used for the information signal of transmission control equipment work, and described power line is used for the equipment that is transmitted as provides the power supply signal of work, makes the information signal that a cable both can transmission control equipment work, also can be transmitted as the power supply signal that equipment provides working power, provide cost savings and be convenient to and operate; Wherein holding wire and power line set twisted wire is stranded to carry out between the lay between the 50mm to 70mm, is the best with the lay of 60mm, and twists to the right; (50) coat described cable cable core with metal level, form outer shielding layer, this goes on foot more specifically that step comprises: around described cable cable core, form foil shielding layer with Aluminium Foil Package, and in the peripheral braiding of described foil shielding layer one deck copper wire mesh braided layer, thereby form outer shielding layer; Wherein the aluminium foil lapping layer is to hold with 100% coverage rate, and the copper mesh braiding is directly to be that the tinned wird of 0.16mm carries out weaving with 112 lines, and the braiding external diameter of described copper wire mesh braided layer is 5.67mm, and the coverage rate of described copper wire mesh braided layer is 86%; (60) hold described outer shielding layer with paper tape, form the paper bag belt, described paper bag band around to left, with the strand of described holding wire and power line set twisted wire to opposite, wherein the paper bag belt is to hold with the coverage rate greater than 100%; And (70) are at described paper bag belt external application Thermoplastic Vulcanizate extrusion molding one deck serving.

As shown in Figures 2 and 3, the shielded cable for engineering apparatus that an embodiment of shielded cable manufacturing method for engineering equipment of the present invention produces, it comprises sixleads 110,screen 130,paper bag band 140 and serving 150.Lead 110 comprisesconductor 111 and coats theinsulating barrier 112 of described conductor 111.These leads 110 are twisted into the cable cable core mutually, and lay is between between the 50mm to 70mm.Describedscreen 130 coats described cable cable core, and describedpaper bag band 140 coats describedscreen 130, the describedpaper bag band 140 of described serving 150 linings.

Describedlead 110 external diameters are about 1.53mm, twoholding wire 110a that are used for transmit information signals are wherein arranged, remain four for being used for thepower line 110b of electric energy transmitting, make the information signal that a cable both can transmission control equipment work like this, also can be transmitted as the power supply signal that equipment provides working power, provide cost savings and be convenient to and operate, holdingwire 110a is except comprisingconductor 111 andinsulating barrier 112, also comprise internal shield, copper wire mesh braidedlayer 113 promptly, copper wire mesh braidedlayer 113 is coated on theinsulating barrier 112 in described, and described interior copper wire mesh braidedlayer 113 can effectively shield phase mutual interference and the extraneous interference between above-mentionedholding wire 110a and thepower line 110b.

Screen 130 is the bimetallic screen, can be metallic shield of the same race, adds copper braid shielding etc. as Copper Foil; Also can plant metallic shield, add copper braid shielding etc. as aluminium foil for difference.What present embodiment adopted is the wrapped copper mesh braid shielded of aluminium foil.As shown in Figure 1, copper wire mesh braidedlayer 132 is woven in aluminiumfoil lapping layer 131 peripheries.Wherein, aluminiumfoil lapping layer 131 shielding rates are 100%, and copper wire mesh braidedlayer 132 directly is that the tinned wird weaving of 0.16mm forms by 112 lines, and coverage rate is 86%, and the braiding external diameter of described copper wire mesh braided layer is 5.67mm.Because the present invention has adopted the dual shield measure, promptly interior copper wire mesh braidedlayer 113 andbimetallic screen 130 can effectively shield external interference, stop the interference of external electromagnetic ripple to electronic equipment, industrial equipment, improve its serviceability.

In the present embodiment, describedconductor 111 adopts suitable conductive material to make, and preferably tinned wird also can be other material, as copper cash, silver-coated copper wire or the like.Preferably, theconductor 111 in the present embodiment adopts the 20AWG line, and its diameter is about 0.93mm.Describedinsulating barrier 112 is perfluoroethylene-propylene (FEP) plastics, and is more high temperature resistant, have black, red, white, green, yellow,, blue six kinds of colors, be used for lead is distinguished.

The serving 150 of cable can protect whole electric power cable inside not to be mechanically damaged and chemical corrosion, adopts Thermoplastic Vulcanizate (TPV) to make.This material low smoke and zero halogen, environmental, and uvioresistant, cold-resistant, therefore can work in the adverse circumstances in the open air.

Shielded cable for engineering apparatus of the present invention, because describedlead 110 is made up ofholding wire 110a andpower line 110b, describedholding wire 110a is used for the information signal of transmission control equipment work, describedpower line 110b is used for the equipment that is transmitted as provides the power supply signal of work, make the information signal that a cable both can transmission control equipment work, also can be transmitted as the power supply signal that equipment provides working power, provide cost savings and be convenient to and operate, and the insulating barrier periphery of describedholding wire 110a is woven with interior copper wire mesh braidedlayer 113, can effectively shield external interference and holding wire 100a and coat described cable cable core with the describedscreen 130 of the mutual interference mutually between thepower line 110b, describedpaper bag band 140 coats describedscreen 130, the describedpaper bag band 130 of described serving 150 linings, can further shield external interference, the serviceability of raising equipment, described serving 150 is a Thermoplastic Vulcanizate, its low smoke and zero halogen, environmental, and uvioresistant, also cold-resistant, therefore cable of the present invention can satisfy engineering equipment in environment abominable field and shopwork conditions needed.

Material that shielded cable manufacturing method for engineering equipment of the present invention is related and parameter are all decided according to actual conditions, for well known to those of ordinary skill in the art, no longer are described in detail at this.

Above disclosed only is the preferred embodiments of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of being done according to the present patent application claim still belongs to the scope that the present invention is contained.

Claims (10)

1. a shielded cable manufacturing method for engineering equipment is characterized in that, comprises the steps:

(1) extrusion molding one layer insulating on conductor forms lead;

(2) provide at least one described lead,, form internal shield, form the holding wire of transmit information signals in the peripheral braiding of each this lead copper wire mesh braided layer;

(3) provide the power line of some described leads as the transmission power supply signal;

(4) described holding wire and described power line are gathered twisted wire and formed the cable cable core;

(5) coat described cable cable core with metal level, form outer shielding layer;

(6) hold described outer shielding layer with paper tape, form the paper bag belt; And

(7) with Thermoplastic Vulcanizate extrusion molding one deck serving outside described paper bag belt.

2. shielded cable manufacturing method for engineering equipment as claimed in claim 1 is characterized in that: the step that forms outer shielding layer in the described step (5) comprises: (51) around described cable cable core, form foil shielding layer with Aluminium Foil Package; And (52) are in the peripheral braiding of described foil shielding layer one deck copper wire mesh braided layer.

3. shielded cable manufacturing method for engineering equipment as claimed in claim 2 is characterized in that: the coverage rate of described foil shielding layer is 100%, and the coverage rate of described copper wire mesh braided layer is 86%.

4. shielded cable manufacturing method for engineering equipment as claimed in claim 2 is characterized in that: described copper wire mesh braided layer is to be formed by the tinned wird braiding.

5. shielded cable manufacturing method for engineering equipment as claimed in claim 2 is characterized in that: described copper wire mesh braided layer is directly to be that the copper cash weaving of 0.16mm forms by 112 lines.

6. shielded cable manufacturing method for engineering equipment as claimed in claim 1 is characterized in that: described holding wire and power line set twisted wire are to carry out stranded between the lay between the 50mm to 70mm.

7. shielded cable manufacturing method for engineering equipment as claimed in claim 1 is characterized in that: described insulating barrier is a polyfluorinated ethylene plastic.

8. shielded cable manufacturing method for engineering equipment as claimed in claim 1 is characterized in that: described conductor is a tinned wird.

9. shielded cable manufacturing method for engineering equipment as claimed in claim 1 is characterized in that: described paper bag band around to the strand of described holding wire and power line set twisted wire to opposite.

10. shielded cable manufacturing method for engineering equipment as claimed in claim 1 is characterized in that: the coverage rate of described paper bag belt is greater than 100%.

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