CN103219576B - A kind of production technology of radio frequency coaxial-cable - Google Patents
A kind of production technology of radio frequency coaxial-cable Download PDFInfo
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- CN103219576B CN103219576B CN201310164105.6A CN201310164105A CN103219576B CN 103219576 B CN103219576 B CN 103219576B CN 201310164105 A CN201310164105 A CN 201310164105A CN 103219576 B CN103219576 B CN 103219576B
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Abstract
The invention discloses a kind of production technology of radio frequency coaxial-cable, comprise the coaxial cable semi-finished product of the braiding of the wrapped and outer conductor screen of stranded, the insulating barrier of inner wire, also comprise step PTFE Heat-shrinkable Tubing being made oversheath; Described oversheath is coated on outside outer conductor screen and becomes the step of coaxial cable finished product: by described coaxial cable semi-finished product length point sanction as required; Oversheath is divided to be cut into and 1. walks the identical length of coaxial cable semi-finished product with; Point cable semi-finished product cut out are inserted in point oversheath cut out; Put into 250 DEG C ~ 350 DEG C insulating box heating 1 ~ 2 minute again, cable machines.Oversheath does not need the mode adopting extrusion molding, reduces investment outlay, and energy-conservation.
Description
Technical field
The present invention relates to a kind of communication cable to manufacture field, be specifically related to its production technology of a kind of radio frequency coaxial-cable.
Background technology
The production technology of the insulating barrier of coaxial cable and oversheath routine adopts insulation extrusion molding/wrapped and sheath to extrude technique, and its production technology is comparatively complicated, and production process is restive, spillage of material and the defect such as equipment investment is larger.Production technology comparatively complexity and its reason restive is, technique under conventional is that exotic material such as the polytetrafluoroethylene that insulation and sheath extrude needs high temperature extrusion production line, complex manufacturing is wayward, and produce more difficult for larger-diameter cable, the large diameter cable pliability of extrusion molding production is simultaneously poor.
In addition, China Patent No. is: 201010168058.9 disclose this one can be used for video monitoring circuit, broadcast singal controls, public TV antenna, radio communication, transmission system and the unidirectional novel radio-frequency coaxial cable of control distribution and the patent of invention of production method thereof, it comprises copper core conductor, polyethylene layer is coated with successively outside described copper core conductor, aluminium foil wheat draws layer, naked copper braid and polyvinyl chloride coating, the invention has the beneficial effects as follows: by conventional radio frequency coaxial outer pvc sheath formula and and carry out improving and optimize to its extrusion process, enhance the wear-resisting lubricating ability of cable thus reduce to intert and connect up, electric wire interspersed pull-out difficulty during intensive wiring, the problem that cable cover(ing) is impaired.But its complex manufacturing, production process is wayward, and product cost is too high.
Summary of the invention
In order to overcome the defect of prior art, the invention provides its production technology of a kind of radio frequency coaxial-cable, the production technology of this radio frequency coaxial-cable, by resistant to elevated temperatures oversheath casing pipe sleeve conductor shield external heat outside, be pasted onto on outer conductor screen after oversheath is shunk, technological operation is simple, and production process is easily controlled, and excellent product performance is stablized; Insulating barrier and outer jacket do not need extrusion process, save extrusion apparatus investment, and energy-conservation.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A production technology for radio frequency coaxial-cable, comprises the coaxial cable semi-finished product of the braiding of the wrapped and outer conductor screen of stranded, the insulating barrier of inner wire, it is characterized in that: also comprise step PTFE Heat-shrinkable Tubing being made oversheath; Described oversheath is coated on and outside outer conductor screen, becomes the step of coaxial cable finished product to be:
1. sanction is divided by described coaxial cable semi-finished product length as required;
2. oversheath is divided to be cut into and 1. walk the identical length of coaxial cable semi-finished product with;
3. by the 1. the step point cable semi-finished product cut out be inserted in the 2. in the step point oversheath cut out;
4. put into 250 DEG C ~ 350 DEG C insulating box heating 1 ~ 2 minute again, oversheath heat shrinkable is tightly enclosed within braided outer conductor, and cable machines.
The twisting step of described inner wire forms inner wire by stranded for 7 silver-coated copper wires;
The wrapped step of described insulating barrier be by polytetrafluoroethylene film band according to adjacent two layers around to contrary, the wrapped one-tenth insulating barrier of overlap mode;
The braiding step of described outer conductor screen adopts monofilament silver-coated copper wire, to weave outward form through high-speed knitter at insulating barrier.
The twisting step of described inner wire is 1.0mm by 7 diameters, and silver thickness is the silver-coated copper wire of 3.5 μm, and concentric stranding becomes diameter to be the inner wire of 3.0mm.Such conductor had both had excellent laser propagation effect, had again twisted wire pliability.
Described insulating barrier wrapped is wrapped 15 layers of the polytetrafluoroethylene film band of 0.10 ~ 0.13mm by thickness, and concrete wrapped mode is: 1st ~ 5 layers adopt the polytetrafluoroethylene film of 12mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 5 ~ 6mm mode; 6th ~ 11 layers adopt the polytetrafluoroethylene film of 18mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 7 ~ 8mm mode; 12nd ~ 15 layers adopt the polytetrafluoroethylene film of 28mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 12 ~ 14mm mode; Finally wrapped for external diameter be the insulating barrier of 8.8mm ~ 9.2mm.Such insulating barrier had both met the requirement of electric property, reached again the pliability that cable needs.
The braiding of described outer conductor screen is by diameter 0.16 ~ 0.18mm, silver thickness is the silver-coated copper wire of 0.4 μm, outside insulating barrier, being woven into 192 nets through high-speed knitter (namely adopts the high-speed knitter of 24 ingots to weave, every ingot there are 8 silver-coated copper wires, 24*8=192 net), count is the outer conductor screen of 90% ~ 95%, and so-called count is the percentage that area that the silver-coated copper wire of braiding covers insulating surface accounts for whole insulation area.Screen mainly prevents the leakage of signal transmission and the interference of outer signals.
The present invention has the following advantages:
1, oversheath described in the present invention is coated on outside outer conductor screen and becomes the step of coaxial cable finished product: 1. by described coaxial cable semi-finished product length point sanction as required; 2. oversheath is divided to be cut into and 1. walk the identical length of coaxial cable semi-finished product with; 3. point cable semi-finished product cut out are inserted in point oversheath cut out; 4. put into 250 DEG C ~ 350 DEG C insulating box heating 1 ~ 2 minute again, cable machines.Insulation is produced and the production equipment special all not needing high temperature produced by sheath, only need commercially to buy ready-made high temperature membrane and sleeve pipe, wrapped and the heating muff through high temperature membrane, therefore technological operation is simple, and the link factor in production process reduces, therefore technology controlling and process is easy, excellent product performance is stablized; Insulating barrier and outer jacket do not need extrusion molding, save extrusion apparatus investment, and energy-conservation; Without extrusion process, therefore do not produce the unavoidable switching on and shutting down of extrusion molding production line and debug process spillage of material, reduce product cost.
2, the inner wire in the present invention adopts silver-plated twisted wire to have excellent transmission performance and pliability, and sheath length is according to actual needs completed by the technology that sleeve pipe heats has practicality, convenience, advantage that cost is low.
3, in the present invention, insulation adopts the forward and reverse winding of multi-layer high-temperature film to have good electric property, pliability and stability.
4, in the present invention, sheath length is according to actual needs completed by the technology that sleeve pipe heats and has practicality, convenience, advantage that cost is low.
5, the braiding of the present invention China and foreign countries conductor shield is by diameter 0.16 ~ 0.18mm, silver thickness is the silver-coated copper wire of 0.4 μm, outside insulating barrier, 192 nets are woven into through high-speed knitter, namely the high-speed knitter of 24 ingots is adopted to weave, every ingot there are 8 silver-coated copper wires, 24*8=192 net, count is the outer conductor screen of 90% ~ 95%, (so-called count is the percentage that area that the silver-coated copper wire of braiding covers insulating surface accounts for whole insulation area).Screen mainly prevents the leakage of signal transmission and the interference of outer signals.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Mark 1 in figure, inner wire, 2, insulating barrier, 3, outer conductor screen, 4, oversheath.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of radio frequency coaxial-cable, specifically be applicable to the radio frequency coaxial-cable that current high temperature (200--260 DEG C) place uses, it comprises the inner wire 1 of coaxial cable, insulating barrier 2 and outer conductor screen 3 is coated with successively outside inner wire 1, the outside cover of conductor shield 3 has oversheath 4 outside, namely outer conductor screen is arranged in oversheath bonding with outer conductor screen again, oversheath 4 in a tubular form, oversheath 4 is socketed in the outside of outer conductor screen 3, and oversheath 4 heating is carried out bonding with outer conductor screen 3, the oversheath of this radio frequency coaxial-cable does not need extrusion molding, reduce investment outlay, and it is energy-conservation.
Embodiment 2
A production technology for radio frequency coaxial-cable, coaxial cable semi-finished product formed by the braiding comprising the wrapped and outer conductor screen of stranded, the insulating barrier of inner wire, after completing these three steps, also comprise step PTFE Heat-shrinkable Tubing being made oversheath; Described oversheath is coated on the following steps becoming coaxial cable finished product outside outer conductor screen:
1. sanction is divided, as 30cm, 50cm, 120cm etc. by described coaxial cable semi-finished product length as required;
2. oversheath is divided to be cut into and 1. walk the identical length of coaxial cable semi-finished product with;
3. point cable semi-finished product cut out are inserted in point oversheath cut out;
4. put into 250 DEG C ~ 350 DEG C insulating box heating 1 ~ 2 minute again, oversheath heat shrinkable is tightly enclosed within braided outer conductor, and cable machines.
Insulating barrier is produced and the production equipment special all not needing high temperature produced by sheath, only need commercially to buy ready-made high temperature membrane and oversheath (pipe), wrapped and the heating muff through high temperature membrane, therefore technological operation is simple, and the link factor in production process reduces, therefore technology controlling and process is easy, excellent product performance is stablized; Insulating barrier and oversheath do not need extrusion molding, save extrusion apparatus investment, and energy-conservation; Without extrusion process, therefore do not produce the unavoidable switching on and shutting down of extrusion molding production line and debug process spillage of material, reduce product cost.
In above-mentioned each step,
Wherein, the twisting step of inner wire heart yearn, be 1.0mm by 7 diameters, silver thickness is the silver-coated copper wire of 3.5 μm, and concentric stranding becomes diameter to be the inner wire of 3.0mm.Such conductor had both had excellent laser propagation effect, had again twisted wire pliability.
The multilayer of insulating barrier is wrapped, be by wrapped for the polytetrafluoroethylene film band of thickness 0.10 ~ 0.13mm 15 layers, concrete wrapped mode is: 1st ~ 5 layers adopt the polytetrafluoroethylene film of 12mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 5 ~ 6mm mode; 6th ~ 11 layers adopt the polytetrafluoroethylene film of 18mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 7 ~ 8mm mode; 12nd ~ 15 layers adopt the polytetrafluoroethylene film of 28mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 12 ~ 14mm mode; Finally wrapped for external diameter be the insulating barrier of 8.8mm ~ 9.2mm.Such insulation had both met the requirement of electric property, reached again the pliability that cable needs.
The braiding of outer conductor screen is, by diameter 0.16 ~ 0.18mm, silver thickness is the silver-coated copper wire of 0.4 μm, namely outside insulating barrier, be woven into 192 nets through high-speed knitter adopts the high-speed knitter of 24 ingots to weave, every ingot there are 8 silver-coated copper wires, 24*8=192 net, the area that the silver-coated copper wire of count to be 90% ~ 95%(count be braiding covers insulating surface accounts for the percentage of whole insulation area) outer conductor screen.Screen mainly prevents the leakage of signal transmission and the interference of outer signals.
Oversheath is enclosed within outer conductor screen, and heating is, the semi-finished product that the braiding of outer conductor screen is completed length point sanction as required, as 30cm, 50cm, 120cm etc., employing external diameter is 10mm ~ 11mm, thickness is PTFE Heat-shrinkable Tubing and the oversheath of 0.6mm ~ 0.9mm, teflon tube oversheath is divided and is cut into and divides the semi-finished product equal length after cutting out, then the braiding semi-finished product after point sanction are packed in polytetrafluoroethylene thermal contraction oversheath, put it into again in 250 DEG C ~ 350 DEG C insulating boxs and heat 1 ~ 2 minute, polytetrafluoroethylene thermal contraction oversheath heat shrinkable is close to or is firmly bonded on wire sheathing, cable machines.
Above-mentioned production technology is generally applicable to produce shorter radio frequency coaxial-cable, and its length is generally within 5m.
Claims (4)
1. a production technology for radio frequency coaxial-cable, comprises the coaxial cable semi-finished product of the braiding of the wrapped and outer conductor screen of stranded, the insulating barrier of inner wire, it is characterized in that: also comprise step PTFE Heat-shrinkable Tubing being made oversheath; The step be coated on by described oversheath outside outer conductor screen is:
1. divide described coaxial cable semi-finished product the length being cut into needs;
2. oversheath divide be cut into 1. to walk with cut out the identical length of coaxial cable semi-finished product;
3. by the 1. the step point cable semi-finished product cut out be inserted in the 2. in the step point oversheath cut out;
4. put into 250 DEG C ~ 350 DEG C insulating box heating 1 ~ 2 minute again, coaxial cable machines;
The twisting step of described inner wire forms inner wire by stranded for 7 silver-coated copper wires;
The wrapped step of described insulating barrier be by polytetrafluoroethylene film band according to adjacent two layers around to contrary, the wrapped one-tenth insulating barrier of overlap mode;
The braiding step of described outer conductor screen adopts monofilament silver-coated copper wire, to weave outward form through high-speed knitter at insulating barrier.
2. the production technology of a kind of radio frequency coaxial-cable as claimed in claim 1, is characterized in that: described inner wire stranded is 1.0mm by 7 diameters, and silver thickness is the silver-coated copper wire of 3.5 μm, and concentric stranding becomes diameter to be the inner wire of 3.0mm.
3. the production technology of a kind of radio frequency coaxial-cable as claimed in claim 1, it is characterized in that: described insulating barrier wrapped is wrapped 15 layers of the polytetrafluoroethylene film band of 0.10 ~ 0.13mm by thickness, and concrete wrapped mode is: 1st ~ 5 layers adopt the polytetrafluoroethylene film of 12mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 5 ~ 6mm mode; 6th ~ 11 layers adopt the polytetrafluoroethylene film of 18mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 7 ~ 8mm mode; 12nd ~ 15 layers adopt the polytetrafluoroethylene film of 28mm according to adjacent two layers around wrapped to contrary, that overlapping widths is 12 ~ 14mm mode; Finally wrapped for external diameter be the insulating barrier of 8.8mm ~ 9.2mm.
4. the production technology of a kind of radio frequency coaxial-cable as claimed in claim 1, it is characterized in that: the braiding of described outer conductor screen is by diameter 0.16 ~ 0.18mm, silver thickness is the silver-coated copper wire of 0.4 μm, outside insulating barrier, be woven into 192 nets through high-speed knitter, count is the outer conductor screen of 90% ~ 95%.
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| CN103219576B true CN103219576B (en) | 2015-11-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700449B (en) * | 2013-12-11 | 2016-07-13 | 浙江德通科技有限公司 | A kind of boundling coaxial cable and production method thereof |
| CN104021875A (en) * | 2014-06-17 | 2014-09-03 | 安徽宏源特种电缆集团有限公司 | Radiation-resistant type phase-stable cable for space environment and production method of radiation-resistant type phase-stable cable for space environment |
| CN106125217B (en) * | 2016-07-04 | 2019-05-17 | 苏州安捷讯光电科技股份有限公司 | A kind of optical cable preparation method |
| CN110948987A (en) * | 2019-12-06 | 2020-04-03 | 中国科学院长春应用化学研究所 | Light electromagnetic shielding heat-shrinkable tube and preparation method thereof |
| CN112309635A (en) * | 2020-10-09 | 2021-02-02 | 滁州润翰微波科技有限公司 | Cable wrapping process for preventing cable medium from shrinking |
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| US4666537A (en) * | 1980-04-24 | 1987-05-19 | Thomas & Betts Corporation | Method of sealing and repairing electrical cables |
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Address after: 618000 Bohai road Deyang city Sichuan province Jingyang District No. 51 Patentee after: Sichuan Aitong cable Limited by Share Ltd Address before: 618000 Deyang City, Sichuan province Jingyang Mountain Road No. 1 North Patentee before: Sichuan Aitong Electric Cable Manufacturing Co., Ltd. |
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Effective date of registration: 20220512 Address after: 618000 No.51 Bohai Road, Jingyang District, Deyang City, Sichuan Province Patentee after: SICHUAN AITONG CABLE CO.,LTD. Patentee after: Chengdu Datang Cable Co., Ltd Address before: 618000 No.51 Bohai Road, Jingyang District, Deyang City, Sichuan Province Patentee before: SICHUAN AITONG CABLE CO.,LTD. |
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