CN109686484B

CN109686484B - Coaxial cable and production equipment and method thereof

Info

Publication number: CN109686484B
Application number: CN201910128069.5A
Authority: CN
Inventors: 宋志涛; 王柏然; 邓舜禹
Original assignee: Shanghai Likun Microwave Technology Co ltd
Current assignee: Shanghai Likun Microwave Technology Co ltd
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2021-01-01
Anticipated expiration: 2039-02-21
Also published as: CN109686484A

Abstract

The application provides a coaxial cable and production equipment and a method thereof, wherein the coaxial cable is sequentially provided with an inner conductor, an insulating layer, an inner shielding layer, an outer shielding layer and a sheath from inside to outside, and the production equipment comprises insulating layer cladding equipment, inner shielding layer cladding equipment and outer shielding layer cladding equipment which are sequentially arranged along the direction of a production line. The insulating layer coating equipment comprises one or more first wrapping machines connected in sequence and a first tension wheel set positioned at the downstream of the first wrapping machines; the inner shielding layer coating equipment comprises a second wrapping machine and a second tension wheel set positioned at the downstream of the second wrapping machine; the outer shielding layer coating equipment comprises a cable weaving machine for coating the outer shielding layer on the outer surface of the inner shielding layer and a take-up mechanism positioned at the downstream of the cable weaving machine. This application reasonable in design, working property are good, can go on by full automation, have greatly alleviateed artifical work, have improved production efficiency.

Description

Coaxial cable and production equipment and method thereof

Technical Field

The invention relates to the field of coaxial cable production and processing, in particular to a coaxial cable and production equipment and a method thereof.

Background

Coaxial cable is a cable comprising two concentric conductors, the conductors and a shielding layer sharing the same axis. The low-loss coaxial cable has the excellent performances of high service frequency, low attenuation, low loss, good consistency, good shielding performance and the like, and also has good bending performance. And thus are increasingly used in transmission systems using radio frequency signals for mobile, microwave communications, and the like.

In the prior art, the production equipment of the coaxial cable has the problems of complex structure, high difficulty in processing and manufacturing, inconvenience in operation, low production efficiency and the like, and the problems often occur in the production process and can not be found in time to cause serious loss. In order to improve the above problems, a coaxial cable production device with reasonable design, good working performance and easy processing and manufacturing is needed to meet the requirements of people.

Disclosure of Invention

The present invention is directed to a coaxial cable and a method and apparatus for producing the same to solve the problems set forth in the background above.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a coaxial cable which is provided with an inner conductor, an insulating layer, an inner shielding layer, an outer shielding layer and a sheath from inside to outside in sequence.

Preferably, the inner conductor is one of a copper wire, a copper-clad aluminum wire and a silver-plated copper wire.

Preferably, the insulating layer is a foamed polyethylene insulating layer or a low-density polytetrafluoroethylene film wrapping layer.

Preferably, the inner shielding layer is one of an aluminum-plastic composite film longitudinal cladding layer, a silver-plated copper strip lapping layer, a copper foil longitudinal cladding layer and a silver-plated flat wire braid layer.

Preferably, the outer shielding layer is one of a tinned copper wire braid, a silvered copper wire braid, a tinned copper wire braid immersion tin layer and a silvered flat wire braid.

Preferably, the sheath is made of polyethylene, polyvinyl chloride, perfluoroethylene propylene copolymer or polyurethane material.

Preferably, the inner conductor of the coaxial cable is a copper wire or a copper-clad aluminum wire, the insulating layer is a foamed polyethylene layer, the inner shielding layer is an aluminum-plastic composite film longitudinal cladding layer, the outer shielding layer is a tinned copper wire braided layer, and the sheath is made of polyethylene or polyvinyl chloride materials.

Preferably, the inner conductor of the coaxial cable is a silver-plated copper wire, the insulating layer is a low-density polytetrafluoroethylene film wrapping layer, the inner shielding layer is a silver-plated copper strip wrapping layer, the outer shielding layer is a silver-plated copper wire braided layer, and the sheath is made of a perfluoroethylene propylene copolymer material.

Preferably, the inner conductor of the coaxial cable is a silver-plated copper wire or a copper-clad aluminum wire, the insulating layer is a foamed polyethylene layer or a low-density polytetrafluoroethylene film wrapping layer, the inner shielding layer is a copper foil longitudinal cladding layer, the outer shielding layer is a tinned copper wire woven tin-dipped layer, and the sheath is made of polyvinyl chloride or a perfluoroethylene propylene copolymer material.

Preferably, the inner conductor of the coaxial cable is a silver-plated copper stranded wire or a single wire, the insulating layer is a low-density polytetrafluoroethylene film lapping layer, the inner shielding layer is a silver-plated flat wire braid layer, the outer shielding layer is a silver-plated flat wire braid layer, and the sheath is made of a polyurethane material.

Preferably, a coaxial electrical connector is connected to one end of the coaxial cable, and the coaxial electrical connector includes:

a housing including a first end and a second end, and a first bore communicating the first end and the second end of the housing;

the tail sleeve comprises a first end, a second end and a second inner hole communicated with the first end and the second end of the tail sleeve, and the first end of the tail sleeve is fixedly connected with the second end of the shell;

an insulating sleeve positioned at a first end of the housing, the insulating sleeve having a perforation in the center;

one end of the contact pin penetrates through the through hole of the insulating sleeve to reach the first end of the shell, and the other end of the contact pin is provided with a positioning groove; the inner conductor of the coaxial cable penetrates through the second end of the tail sleeve, extends into the positioning groove and is welded to the contact pin.

More preferably, the housing of the coaxial electrical connector, the insulating sleeve and the tail sleeve are detachable structures and are formed into an integral molding after being crimped.

More preferably, the housing of the coaxial electrical connector is a straight cylinder.

Further, the first inner hole is a straight hole.

More preferably, the housing of the coaxial electrical connector includes a transverse housing and a longitudinal housing, the central axes of the transverse housing and the longitudinal housing are perpendicular to each other, and the transverse housing and the longitudinal housing are integrally cast.

Further, the first inner hole is an L-shaped hole.

More preferably, the second bore is a smooth straight bore.

More preferably, the outer side of the first end of the tail sleeve of the coaxial electric connector is provided with an external thread, and the inner side of the second end of the outer shell is provided with an internal thread matched with the external thread.

More preferably, the length of the contact pin of the coaxial electrical connector is longer than that of the insulating sleeve, and the contact pin extends out of two ends of the insulating sleeve.

More preferably, the second end of the housing of the coaxial electrical connector and the outer surface of the jacket of the coaxial cable adjacent thereto are sheathed with a heat shrink sleeve.

More preferably, a through hole communicated with the positioning groove is formed in the outer surface of the other end of the contact pin of the coaxial electric connector, and soldering tin is poured into the positioning groove from the through hole to solder the inner conductor of the coaxial cable to the positioning groove.

More preferably, the inner wall of the boot of the coaxial electrical connector is provided with a bushing having opposite front and rear ends and a bore through which the coaxial cable passes.

Further, the inner diameter of the hole is in a range between the outer diameter of the inner shield layer and the outer diameter of the outer shield layer of the coaxial cable.

Further, the bushing is made of an insulating material.

Further, the coaxial electric connector further comprises a circular insulating sheet, a through hole is formed in the center of the insulating sheet, the insulating sheet is sleeved at the other end of the contact pin, and one side of the insulating sheet is pressed against the bushing.

Further, the inner conductor of the coaxial cable passes through the through hole of the insulation sheet, and the inner diameter of the through hole is smaller than the outer diameter of the inner shielding layer.

Furthermore, the circumference direction of the insulation sheet is also provided with uniformly distributed round holes.

Furthermore, a gasket is sleeved between one side of the insulating sheet and the lining, and the gasket is annular.

The invention provides a production device of a coaxial cable, which comprises an insulating layer cladding device, an inner shielding layer cladding device and an outer shielding layer cladding device which are sequentially arranged along the direction of a production line; wherein the content of the first and second substances,

the insulating layer coating equipment comprises one or more first wrapping machines and a first tension wheel set, wherein the first wrapping machines are connected in sequence and used for coating the insulating layer on the outer surface of the inner conductor, and the first tension wheel set is positioned at the downstream of the first wrapping machines and used for adjusting the internal tension of the cable;

the inner shielding layer coating equipment comprises a second wrapping machine and a second tension wheel set, wherein the second wrapping machine is used for coating the outer surface of the insulating layer with the inner shielding layer, and the second tension wheel set is positioned at the downstream of the second wrapping machine and is used for adjusting the internal tension of the cable;

the outer shielding layer coating equipment comprises a cable braiding machine for coating the outer shielding layer on the outer surface of the inner shielding layer, and a take-up mechanism located at the downstream of the cable braiding machine and used for winding the cable coated with the outer shielding layer onto a reel.

Preferably, the first wrapping machine includes:

the side wall of the hollow compartment body is provided with a first through hole and a second through hole, wherein the second through hole is opposite to the first through hole;

the wrapping mechanism is arranged inside the hollow carriage body and comprises a guide pipe, and the guide pipe is connected to the periphery of the first through hole;

the center of the guide pipe is provided with a central cavity along the axial direction;

the central cavity is communicated with the first through hole and is opposite to the second through hole;

the wrapping mechanism also comprises a rotating ring vertical to the guide tube, and the center of the rotating ring is provided with a central cylinder;

the central cylinder is connected with the free end of the guide pipe in a relatively rotatable manner through a rotary bearing;

at least one connecting rod connects the central cylinder with the ring body of the swivel;

the outer side of the guide pipe is sleeved with the wrapping tape disc and the outer side of the guide pipe along the axial direction, and the wrapping tape is used for placing the wrapping tape.

More preferably, the connecting rods are at least two and are radially arranged around the central cylinder.

Furthermore, the number of the connecting rods is two, and the two connecting rods are combined into a diameter.

Preferably, the first tension wheel set comprises: a vertical rod and a cross rod which can be relatively and rotatably connected through a rotating shaft; a first pulley is rotatably arranged on the vertical rod; dividing the cross bar into two parts, namely a first part and a second part, by taking the rotating shaft as a boundary; the outer end of the first part is provided with a counterweight; a second pulley is rotatably disposed on the second portion.

More preferably, at least two wheel grooves are arranged on the outer peripheries of the first pulley and the second pulley.

Preferably, the structure of the second wrapping machine is the same as or different from that of the first wrapping machine.

Preferably, the second tension wheel group includes: a stress frame is erected on a horizontal support, and two sides of the stress frame are respectively provided with a sliding rod; and a third pulley is fixed at the lower part of the stress frame, a fourth pulley is arranged at the upper part of the same surface of the stress frame, and the fourth pulley slides up and down along the sliding rod.

More preferably, at least two wheel grooves are arranged on the outer peripheries of the third pulley and the fourth pulley.

More preferably, two sides of the stress frame are respectively provided with a guide wheel.

Preferably, a guide wheel set is further arranged between the first wrapping machine and the first tension wheel set, and/or between the first tension wheel set and the second wrapping machine, and/or between the second wrapping machine and the second tension wheel set, and the guide wheel set comprises at least two guide wheels arranged in the horizontal direction.

Preferably, the cable braiding machine comprises:

the machine frame is provided with a working table surface; the working table surface is provided with at least one weaving component, wherein,

the braiding assembly comprises: a first turntable rotatable about a first axis of rotation; a motor for driving the first rotary disc to rotate is arranged below the first rotary disc; the first rotary disc is provided with a second rotary disc which penetrates out of the surface of the first rotary disc upwards, a second rotary shaft penetrates through the center of the second rotary disc, and the second rotary disc can rotate around the second rotary shaft; a weaving unit is fixedly connected above the second turntable;

the knitting unit includes: the base is provided with two side plates; a line carrying shaft penetrates through the side plates, and the line carrying shaft is rotatably sleeved with the line shaft wound with braided wires; one end of the wire carrying shaft penetrates through one side plate and is connected with a rotating wheel, and teeth are radially arranged on the surrounding periphery of the rotating wheel; openings are formed in the two side plates, at least one connecting shaft is arranged between the openings, a first guide wheel is arranged on the connecting shaft, and the first guide wheel can rotate around the connecting shaft; two ends of the connecting shaft extend out of the opening and are respectively connected with a sliding block, a guide post in the vertical direction penetrates through the sliding block, one end of the guide post is fixedly connected with the base, and the other end of the guide post is fixedly connected with the outer wall of the side plate through a first fixing block; the outer wall of the side plate provided with the rotating wheel is also provided with a second fixed block, a brake rod penetrates through the second fixed block and can slide up and down along the second fixed block, and the brake rod is positioned above the sliding block; the top end of the brake rod is connected with the first end of a deflector rod, and the second end of the deflector rod is positioned below the rotating wheel and above the first fixed block; the driving lever is rotatably connected with the outer wall of the side plate in the area between the first end and the second end of the driving lever through a rotating shaft;

the first rotating disc is rotatably connected with the working table top through a first rotating shaft;

the center of the working table is provided with a cable through hole, and the first rotary disc does not cover the cable through hole.

More preferably, at least one guide wheel is arranged above the working table, and the guide wheel is rotatably connected with the machine frame through a rotating shaft.

More preferably, at least one guide wheel is arranged below the working table, and the guide wheel is rotatably connected with the rack through a rotating shaft.

More preferably, the cable through hole is provided with a wire passing pipe perpendicular to the working table, and the upper end and the lower end of the wire passing pipe respectively form a cable outlet hole and a cable inlet hole.

More preferably, a limiting cylinder fixedly connected to the frame is arranged right above the wire passing pipe.

Preferably, the take-up mechanism includes:

the device comprises a horizontal base, a guide wheel and a mounting seat, wherein a support is arranged on the base and comprises two side supports; a horizontal rotating shaft is connected between the side brackets, and the rotating shaft can rotate around the axial direction;

a lead screw in the horizontal direction is connected between the side brackets, and the lead screw is parallel to the rotating shaft; the lead screw is mounted on the bracket in a manner of rotating around the axial direction;

the guide wheel is rotatably arranged on the top layer of the mounting seat, the mounting seat further comprises a through screw hole, and the internal thread of the screw hole is meshed with the external thread of the lead screw; the central axis of the guide wheel is parallel to the rotating shaft.

The third aspect of the present invention provides a method for producing a coaxial cable, comprising:

a. one or more insulating layers are wrapped on the outer surface of the inner conductor;

b. an inner shielding layer made of a metal material is wrapped on the outer surface of the insulating layer;

c. the outer surface of the inner shielding layer is coated with an outer shielding layer which is woven by metal wires;

d. and a sheath made of insulating material is coated on the outer surface of the outer shielding layer.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

the coaxial cable and the production equipment and method thereof provided by the invention have the advantages of reasonable design and good working performance, can be carried out automatically in the whole process, greatly lightens the manual work, and improves the production efficiency.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

FIG. 1 is a schematic view of a coaxial cable;

FIG. 2 is a schematic diagram of the structure of the components of a coaxial electrical connector;

FIG. 3 is a schematic view of the components of another coaxial electrical connector;

FIG. 4 is a schematic structural view of a coaxial cable manufacturing apparatus;

FIG. 5 is a structural section view of a wrapping mechanism in the first wrapping machine/the second wrapping machine of the preferred embodiment;

FIG. 6 is a schematic structural diagram of a wrapping mechanism in the first wrapping machine/the second wrapping machine of the preferred embodiment;

FIG. 7 is a schematic structural view of a first tension wheel set of the preferred embodiment;

FIG. 8 is a structural elevation view of a second tension pulley set of the preferred embodiment;

FIG. 9 is a structural side view of a second tension pulley set of the preferred embodiment;

FIG. 10 is a schematic structural view of a preferred embodiment guide wheel set;

FIG. 11 is a schematic view of the general construction of a preferred embodiment of a cable braiding machine;

FIG. 12 is a schematic structural view of a countertop of a preferred embodiment cable braiding machine (without a spindle);

FIG. 13 is a schematic view of the structure of the spindle of the preferred embodiment;

FIG. 14 is a schematic view of the structure of the take-up mechanism of the preferred embodiment cable braiding machine;

fig. 15 is a flow chart of a preferred method of producing a coaxial cable.

Illustration of the drawings:

1. an inner conductor; 2. an insulating layer; 3. an inner shield layer; 4. an outer shield layer; 5. a sheath; 6. a housing; 7. a tail sleeve; 8. an insulating sleeve; 9. inserting a pin; 901. positioning a groove; 902. a through hole; 10. a bushing; 11. an insulating sheet; 12. a gasket;

100. a first wrapping machine; 110. a hollow compartment body; 120. a first perforation; 130. a second perforation; 121. a guide tube; 150. a wrapping wheel; 160. a central barrel; 165. wrapping a tape reel; 170. a rotating bearing; 180. a connecting rod; 190. a pulley; 200. a first tension wheel set; 220. a cross bar; 210. a vertical rod; 211. a first pulley; 221. a second pulley; 222. balancing weight; 300. a guide wheel set; 400. a second tension pulley set; 410. a support; 411. a third pulley; 415. a stress frame; 420. a first slide bar; 421. a fourth pulley; 425. a slider; 430. a second slide bar; 432. a balancing weight; 433. a weight plate; 440. a connecting chain; 600. a cable braiding machine; 601. a base; 602. a side plate; 603. a thread carrying shaft; 604. a rotating wheel; 605. a connecting shaft; 606. a third guide wheel; 607. a slider; 608. a guide post; 609. a first fixed block; 610. tensioning the spring; 611. a second fixed block; 612. a brake lever; 613. a deflector rod; 614. a rotating shaft; 615. a shaft sleeve; 616. a return spring; 618. a top plate; 619. a universal bearing; 620. a guide bar; 621. a paying-off wheel; 622. a fourth guide wheel; 630. a first turntable; 631. a second turntable; 632. a first rotating shaft; 633. a second rotating shaft; 634. fixing screws; 640. a frame; 641. a work table; 642. perforating a cable; 643. a second guide wheel; 644. a first guide wheel; 645. a wire passing pipe; 646. a limiting cylinder; 700. a take-up mechanism; 701. a base; 702. a support; 720. a side bracket; 710. a mounting seat; 730. a take-up pulley; 731. a rotating shaft; 740. a lead screw; 750. a first rotary drive motor; 751. a second rotary drive motor; 760. and a fifth guide wheel.

Detailed Description

The present invention provides a coaxial cable and a production apparatus and method thereof, and in order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, it being understood that the data so used may be interchanged under appropriate circumstances. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The first embodiment is as follows:

as shown in fig. 1, a coaxial cable is provided with an inner conductor 1, an insulating layer 2, an inner shielding layer 3, an outer shielding layer 4 and a sheath 5 in sequence from inside to outside; the insulating layer 2 is tightly coated outside the inner conductor 1, the inner shielding layer 3 is arranged outside the insulating layer 2, the outer shielding layer 4 is arranged outside the inner shielding layer 3, and the sheath 5 is extruded on the outer surface of the outer shielding layer 4.

Specifically, the method comprises the following steps:

the resistance loss of the inner conductor 1 is a main source of attenuation of the coaxial cable, and in order to reduce the attenuation of the coaxial cable, the inner conductor 1 may be one of a copper wire, a copper-clad aluminum wire and a silver-plated copper wire. For example, the inner conductor 1 is a silver-plated copper wire conforming to JB/T3135-2011. The inner conductor 1 is of a cylindrical structure, and the main requirements are a small resistance at high frequencies, sufficient flexibility and mechanical strength, and high dimensional accuracy. The twisted silver-plated copper wire is beneficial to improving the flexibility of the coaxial cable.

The insulating layer 2 is a main component of the coaxial cable, and has a great influence on reducing attenuation of the cable, improving power capacity, increasing mechanical stability, and the like. The insulating layer 2 can be a foamed polyethylene insulating layer or a low-density polytetrafluoroethylene film wrapping layer. For example, the insulating layer is a low-density teflon film wrapping layer, which is also called as an "expanded sealing tape" or an elastic sealing tape, and has a low dielectric constant and density, so that the outer diameter of the coaxial cable can be reduced, and the weight of the coaxial cable can be reduced.

The inner shield layer 3 serves both as a return path and as a shield. The inner shielding layer 3 can be one of an aluminum-plastic composite film longitudinal cladding layer, a silver-plated copper strip lapping layer, a copper foil longitudinal cladding layer and a silver-plated flat wire weaving layer.

The outer shielding layer 4 is one of a tinned copper wire braided layer, a silvered copper wire braided layer, a tinned copper wire braided tin-dipped layer and a silvered flat wire braided layer.

The sheath 5 serves to protect the inner components of the coaxial cable from mechanical damage and from factors such as friction, moisture, corrosion, high and low temperature environments, etc. The sheath 5 can be made of polyethylene, polyvinyl chloride, perfluoroethylene propylene copolymer or polyurethane material.

Several examples are specifically described below.

The coaxial cable is a foamed polyethylene low-loss coaxial cable.

The inner conductor 1 of the coaxial cable is a copper wire or a copper-clad aluminum wire, the insulating layer 2 is a foamed polyethylene layer, the inner shielding layer 3 is an aluminum-plastic composite film longitudinal cladding layer, the outer shielding layer 4 is a tinned copper wire woven layer, and the sheath 5 is made of polyethylene or polyvinyl chloride materials.

Wherein:

a) the inner conductor 1 is a single-wire structure.

b) The weight of the coaxial cable is 3-20 kg/100m, for example, the weight of the coaxial cable with the outer diameter of 4.95mm is 3kg/100 m; a coaxial cable having an outer diameter of 15mm weighed 20kg/100 m.

c) The impedance of the coaxial cable is 50 ohms.

d) The working temperature of the coaxial cable is-55-85 ℃.

e) The foamed polyethylene layer is a physical foamed polyethylene layer or a chemical foamed polyethylene layer extruded on the inner conductor 1. In a preferred embodiment, the foamed polyethylene layer is a physically foamed polyethylene layer extruded onto the inner conductor 1.

According to the coaxial cable, the insulating layer 2 is a physical foaming polyethylene insulating layer, so that a good insulating effect can be realized, the relative dielectric constant is low, the dielectric loss angle factor is small, and the attenuation is reduced. The physical foaming polyethylene material is less prone to loss of video signals than solid polyethylene, flexibility of the cable is improved, and installation is convenient. The polyethylene or polyvinyl chloride sheath layer of the coaxial cable can protect the cable from being influenced by factors such as mechanical force, friction, moisture, corrosion, high and low temperature environments and the like in places with high requirements on water resistance.

In addition, in the production process of the coaxial cable, the aluminum film can be firmly adhered to the foaming insulator, the interface can not be opened when the bending angle is small in the construction process, the shielding effect is improved, signal leakage is avoided, the interference of external signals is avoided, and the coaxial cable has the advantages of light weight, high cost performance, high transmission rate and the like, and is suitable for being used as an economical transmission feeder line.

And (II) the coaxial cable is a low-loss high-power coaxial cable.

The inner conductor 1 of the coaxial cable is a silver-plated copper wire, the insulating layer 2 is a low-density polytetrafluoroethylene film wrapping layer, the inner shielding layer 3 is a silver-plated copper strip wrapping layer, the outer shielding layer 4 is a silver-plated copper wire weaving layer, and the sheath 5 is made of a perfluoroethylene propylene copolymer material.

Wherein:

a) the inner conductor 1 is a silver-plated copper wire or formed by stranding a plurality of silver-plated copper wires.

b) The weight of the coaxial cable is 21-30 kg/100m, for example, the weight of the coaxial cable with the outer diameter of 9.9mm is 21kg/100 m; a coaxial cable having an outer diameter of 14.2mm weighed 30kg/100 m.

c) The impedance of the coaxial cable is 50 ohms.

d) The working temperature of the coaxial cable is-65-165 ℃.

This kind of coaxial cable adopts low density polytetrafluoroethylene film to wind the package as the insulating layer for the resistant power of cable improves, and, the silver-plated copper strips also can effectively reduce reflected power around the internal shield layer of package, makes the power increase. The coaxial cable is suitable for being used as a transmission feeder line of high-power transmission occasions of electronic equipment such as communication, electronic tracking, warning, electronic countermeasure, navigation and the like.

And (III) the coaxial cable is a semi-flexible low-loss coaxial cable.

This coaxial cable's inner conductor 1 is silvered copper line or copper clad aluminum wire, insulating layer 2 is foaming polyethylene layer or low density polytetrafluoroethylene film around the covering, inner shield 3 is the copper foil longitudinal wrapping layer, outer shield 4 is the tinned wire and weaves the immersion tin layer, sheath 5 adopts polyvinyl chloride or perfluor ethylene propylene copolymer material to make.

Wherein:

a) the inner conductor 1 is a copper-clad aluminum wire or a silver-plated copper single wire.

b) The weight of the coaxial cable is 3-8.1 kg/100m, for example, the weight of the coaxial cable with the outer diameter of 4.1mm is 3kg/100 m; a coaxial cable having an outer diameter of 7.6mm weighed 8.1kg/100 m.

c) The impedance of the coaxial cable is 50 ohms.

d) The working temperature of the coaxial cable is-65-165 ℃ or-55-85 ℃.

The coaxial cable has lower loss than common semi-flexible cable by more than 30%, and is suitable for signal transmission of new generation mobile communication.

In a preferred embodiment, a semi-flexible low-loss coaxial cable comprises an inner conductor 1, an insulating layer 2, an inner shielding layer 3, an outer shielding layer 4 and a sheath 5 which are arranged in sequence from inside to outside. The coaxial cable comprises an inner conductor 1 of a coaxial cable, an insulating layer 2, an inner shielding layer 3, an outer shielding layer 4 and a jacket, wherein the inner conductor 1 of the coaxial cable is a silver-plated copper wire, the insulating layer 2 is a low-density polytetrafluoroethylene film wrapping layer, the inner shielding layer is a copper foil longitudinal covering layer, the outer shielding layer 4 is a tinned copper wire weaving layer, the inner shielding layer 3 and the outer shielding layer 4 are connected together in a welding mode through tin immersion treatment, and the jacket 5 is made of a perfluoro ethylene propylene copolymer material.

In another preferred embodiment, a semi-flexible low-loss coaxial cable comprises an inner conductor 1, an insulating layer 2, an inner shielding layer 3, an outer shielding layer 4 and a sheath 5 which are arranged in sequence from inside to outside. The coaxial cable comprises an inner conductor 1, an insulating layer 2, an inner shielding layer 3, an outer shielding layer 4, a foamed polyethylene insulating layer, a copper foil longitudinal cladding layer, a tinned copper wire braided layer, a sheath 5 and a cover layer, wherein the inner conductor 1 of the coaxial cable is a silvered copper wire, the insulating layer 2 is a foamed polyethylene insulating layer, the inner shielding layer 3 is a copper foil longitudinal cladding layer, the outer shielding layer 4 is a tinned copper wire braided layer, the inner shielding layer 3 and the outer shielding layer 4 are connected together in a.

Wherein, the foamed polyethylene layer can be a physical foamed polyethylene insulating layer or a chemical foamed polyethylene insulating layer. The physically foamed polyethylene insulation layer is preferred in this embodiment.

And fourthly, the coaxial cable is a phase-stable low-loss coaxial cable.

Wherein:

a) the inner conductor 1 is a silver-plated copper single wire.

b) The weight of the coaxial cable is 1.6-14 kg/100m, for example, the weight of the coaxial cable with the outer diameter of 2.2mm is 1.6kg/100 m; a coaxial cable having an outer diameter of 7.8mm weighed 14kg/100 m.

c) The impedance of the coaxial cable is 50 ohms.

d) The working temperature of the coaxial cable is-65-165 ℃ or-55-200 ℃.

The insulating layer 2 of the coaxial cable is made of low-density polytetrafluoroethylene, so that the coaxial cable has excellent chemical stability resistance and higher environmental adaptability; the inner conductor 1 is made of silver-plated copper wires, and has the advantages of strong temperature resistance, strong oxidation resistance and high mechanical strength, so that the service life of the phase-stabilized low-loss coaxial cable is prolonged; the outer shielding layer 4 is woven by silver-plated copper wires, so that the shielding of electromagnetic interference resistance and the effect of improving the mechanical strength of a product can be achieved; the sheath 5 is preferably a perfluoroethylene propylene copolymer, so that the important index requirements such as softness, cracking resistance and the like are ensured, and the environmental requirements can be met.

Therefore, the coaxial cable has the characteristics of high phase stability, low loss, low standing wave, strong anti-interference performance and the like, and can be used as a connecting feeder line of devices such as a phased array radar, a vector network analyzer and the like.

And (V) the coaxial cable is a flexible low-loss coaxial cable.

The inner conductor 1 of the coaxial cable is a silver-plated copper stranded wire or a single wire, the insulating layer 2 is a low-density polytetrafluoroethylene film wrapping layer, the inner shielding layer 3 is a silver-plated flat wire braided layer, the outer shielding layer 4 is a silver-plated flat wire braided layer, and the sheath 5 is made of a polyurethane material.

Wherein:

a) the weight of the coaxial cable is 5-30.5 kg/100m, for example, the weight of the coaxial cable with the outer diameter of 4.95mm is 5kg/100 m; a coaxial cable having an outer diameter of 13.3mm and a weight of 30.5kg/100 m.

b) The minimum bending radius of the coaxial cable is 25mm to 67mm, for example, the minimum bending radius of the coaxial cable is 25mm, and the outer diameter of the coaxial cable is 4.95 mm; the minimum bend radius of the coaxial cable with an outer diameter of 13.3mm is 67 mm.

c) The impedance of the coaxial cable is 50 ohms.

d) The working temperature of the coaxial cable is-55-85 ℃.

The coaxial cable can be used as a cable for electronic equipment such as communication, electronic tracking, warning, electronic countermeasure, navigation and the like, is particularly suitable for being used for transmission of moving parts, and has the advantages of softness, low loss, good uniformity and the like.

Example two:

a coaxial cable electrical connector is assembled in connection with a coaxial cable, the coaxial cable and the coaxial electrical connector being shown aligned along a common central axis. The method comprises the following steps:

a housing 6, the housing 6 including a first end and a second end, and a first bore communicating the first end and the second end of the housing 6;

the tail sleeve 7 comprises a first end, a second end and a second inner hole which is communicated with the first end and the second end of the tail sleeve 7, and the first end of the tail sleeve 7 is fixedly connected with the second end of the shell 6;

an insulating sleeve 8, the insulating sleeve 8 being positioned at a first end of the housing 6, the insulating sleeve 8 being provided with a through hole in the center;

one end of the contact pin 9 penetrates through the through hole of the insulating sleeve 8 to reach the first end of the shell 6, and the other end of the contact pin 9 is provided with a positioning groove 901; the inner conductor 1 of the coaxial cable passes through the second end of the tail sleeve 7, extends into the positioning groove 901, and is welded to the contact pin 9. The length of the pin 9 is longer than that of the insulating sleeve 8, and the pin 9 extends out of two ends of the insulating sleeve 8. A through hole 902 communicated with the positioning groove 901 is further formed in the outer surface of the other end of the contact pin 9, solder is poured into the positioning groove 901 from the through hole 902, and the inner conductor 1 of the coaxial cable is welded to the positioning groove 901.

Several examples are specifically described below.

As shown in fig. 2, in this embodiment, the housing 6, the insulating sleeve 8 and the tail sleeve 7 of the coaxial electrical connector are detachable structures, and are formed into an integral molding after being crimped.

The shell 6 of the coaxial electric connector is in a straight cylinder shape, the first inner hole is a straight hole, and the second inner hole of the tail sleeve 7 is a smooth straight hole. Or, the housing 6 may also be a transverse housing and a longitudinal housing, which have central axes perpendicular to each other, the transverse housing and the longitudinal housing are cast as a whole, and the first inner hole is an L-shaped hole.

The outer side of the first end of the tail sleeve 7 of the coaxial electric connector is provided with an external thread, and the inner side of the second end of the shell 6 is provided with an internal thread matched with the external thread.

The inner wall of the tail sleeve 7 of the coaxial electric connector is provided with a bushing 10, and the bushing 10 is made of an insulating material. The bushing 10 has opposite front and rear ends and a bore for the coaxial cable to pass through, the bore having an inner diameter comparable to the outer diameter of the inner shield layer 3 of the coaxial cable. The bushing 10 is well protected from damage to the coaxial cable during assembly and disassembly, and can be reused for many times.

Coaxial electric connector still includes a circular shape insulating piece 11, insulating piece 11 cover is established the other end of contact pin 9, its one side support press in bush 10, the central point of insulating piece 11 puts and has the diameter slightly to be greater than the through-hole of coaxial cable's inner conductor's diameter. The inner conductor 1 of the coaxial cable penetrates through the insulating sheet 11, extends into the positioning groove 901 of the contact pin 9, and is fixed by welding.

In another preferred embodiment, the circumference direction of the insulation sheet 11 may be further provided with uniformly distributed circular holes.

Furthermore, the second end of the housing 6 of the coaxial electrical connector and the outer surface of the sheath 5 of the coaxial cable adjacent thereto are sheathed with a heat-shrinkable sleeve (not shown in the figure) which plays a role of moisture-proof and waterproof.

During assembly, the exposed inner conductor 1 of the coaxial cable after being stripped firstly penetrates through the heat-shrinkable sleeve, the tail sleeve 7, the bushing 10 and the insulating sheet 11 in sequence, is fixedly welded with the positioning groove 901 at the other end of the pin 9, and then is pressed into the insulating sleeve 8. The insulating sleeve 8 is pressed into the second end of the outer shell 6, and the outer shell 6 and the tail sleeve 7 are locked through threaded fit. The heat shrink sleeve is moved so that one end abuts the second end of the housing 6 and finally heated so that it shrinks so that the coaxial cable and the coaxial electrical connector are integrated.

As shown in fig. 3, a spacer 12 may be further disposed between one side of the insulation sheet 11 and the bushing 10, the spacer 121 is annular, and the spacer 12 is used for compensating a dielectric constant. During assembly, the exposed inner conductor 1 of the coaxial cable after being stripped firstly passes through the heat-shrinkable sleeve, the tail sleeve 7, the bushing 10, the gasket 12 and the insulating sheet 11 in sequence, is fixedly welded with the positioning groove 901 at the other end of the pin 9, and then is pressed into the insulating sleeve 8. The insulating sleeve 8 is pressed into the second end of the outer shell 6, and the outer shell 6 and the tail sleeve 7 are locked through threaded fit. The heat shrink sleeve is moved so that one end abuts the second end of the housing 6 and finally heated so that it shrinks so that the coaxial cable and the coaxial electrical connector are integrated.

Example three:

as shown in fig. 4, a coaxial cable production apparatus includes an insulating layer coating apparatus, an inner shield layer coating apparatus, and an outer shield layer coating apparatus, which are sequentially arranged in a production line direction. Wherein the content of the first and second substances,

the insulation layer coating equipment comprises one or more first wrapping machines 100 which are connected in sequence and used for coating the outer surface of an inner conductor with an insulation layer, and a first tension wheel set 200 which is positioned at the downstream of the first wrapping machine 100 and used for adjusting the internal tension of a cable;

the inner shielding layer coating equipment comprises a second wrapping machine 300 for coating the outer surface of the insulating layer with the inner shielding layer, and a second tension wheel set 400 positioned at the downstream of the second wrapping machine 300 and used for adjusting the internal tension of the cable;

the outer shielding layer coating device comprises a cable weaving machine 600 for coating the outer shielding layer on the outer surface of the inner shielding layer, and a take-up mechanism 700 which is positioned at the downstream of the cable weaving machine 600 and is used for winding the cable coated with the outer shielding layer onto a reel.

First around chartered plane 100 with between the first tension wheelset 200, the second around chartered plane 300 with between the second tension wheelset 400, still be equipped with direction wheelset 500, direction wheelset 500 includes the leading wheel that two at least horizontal directions set up.

The cross-sectional view of the first wrapping machine 100 is shown in fig. 5, and the basic structure and the specific work flow are briefly described as follows: the first wrapping machine 100 includes a hollow box 110 and a wrapping mechanism disposed inside the hollow box 110. The sidewall of the hollow compartment 110 is provided with a first through hole 120 and a second through hole 130, and the second through hole 130 is opposite to the first through hole 120. The inner conductor to be wrapped enters the hollow box body 110 through the first through hole 120, the wrapping operation of the wrapping mechanism is received, the wrapping tape (here, the insulating layer) is wrapped on the inner conductor, and after the wrapping operation is completed, the inner conductor penetrates out of the hollow box body 110 through the second through hole 130.

The wrapping tape is wound on a wrapping tape reel 165 in advance, the outer side of a guide pipe 121 is axially sleeved on the wrapping tape reel 165, and the guide pipe 121 is connected to the periphery of the first through hole 120.

The guide tube 121 is centrally provided with an axial central hollow through which the inner conductor passes. Inside the hollow compartment 110, one end of the central hollow is communicated with the first through hole 120, and the other end is opposite to the second through hole 130. Thereby facilitating the connection of the inner conductor from the first perforation 120 to the second perforation 130.

The specific structure of the wrapping mechanism is shown in fig. 6, and the wrapping mechanism further includes a wrapping wheel 150 perpendicular to the guide tube 121, and the wrapping wheel 150 is disposed at a free end of the guide tube 121, i.e., an end far away from the first through hole 120. A center tube 160 is disposed at the center of the wrapping wheel 150, the center tube 160 and the free end of the guide tube 121 are connected to each other through a rotation bearing 170, specifically, the center tube 160 is sleeved on the outer ring of the rotation bearing 170, and the free end of the guide tube 121 is inserted into the inner ring of the rotation bearing 170, so that the center tube 160 and the free end of the guide tube 121 can rotate relatively. The wrapping wheel 150 is provided with a ring body outside the central cylinder 160, the ring body is connected with the central cylinder 160 through at least one connecting rod 180, and the at least one connecting rod 180 is radially arranged around the central cylinder 160. And, preferably, two connecting rods 180 are arranged separately in the radial direction, especially, combined into a diameter to ensure the stability of the rotation of the ring body. Each connecting rod 180 is provided with a pulley 190, and during operation, the wrapping tape is connected to the pulley 190 from the wrapping tape disc 165, and passes through the pulley 190, the pulley 190 rotates due to the rotation of the wrapping wheel 150, and the pulley 190 drives the corresponding rotation of the wrapping tape, so that the wrapping is carried out to the outer layer of the inner conductor. The inner conductor to be wrapped is extended from the free end of the guide tube 121 and then is subjected to a wrapping operation of the wrapping tape while advancing.

The cable received around the insulation passes out of the hollow compartment 110 through the second through hole 130. Specifically, the second through hole 130 may also be disposed inside the hollow compartment 110 and adjacent to a second guide tube, and the second guide tube and the opening of the central hollow space of the guide tube 121 are also opposite to each other.

One or more, for example, three, first wrapping machines 100 may be provided. Treat that the inner conductor of package penetrates from the first perforation of the first chartered plane, wear out from the second perforation of this chartered plane after wrapping the first layer insulating layer, stretch into the first perforation of the second first chartered plane after that, wear out from the second perforation of this chartered plane after wrapping the second layer insulating layer, stretch into the first perforation of the third first chartered plane after that, wear out from the second perforation of this chartered plane after wrapping the third layer insulating layer to the package of multilayer insulating layer has been accomplished.

The cable wrapped with the insulating layer passes through the second through hole 130 of the first wrapping machine 100 and then continues to the first tension pulley set 200. Specifically, as shown in fig. 7, the first tension wheel set 200 mainly comprises a cross frame formed by a cross bar 220 and a vertical bar 210, i.e. fixedly connected to each other through a rotating shaft in a relatively rotatable manner. Also, a first pulley 211 is rotatably provided at a fixed position on the vertical bar 210, and a second pulley 221 is rotatably provided at a fixed position on the cross bar 220. The hinge divides the cross bar 220 into two parts, a first part and a second part, i.e., left and right in the drawing. The first part, the outer end on the left side in the figure, is provided with a counterweight 222; the second part, i.e. the right side in the figure, is provided with said second pulley 221. And, the cable wrapped with the insulating layer is wound around the first pulley 211 and the second pulley 221 at least once. Meanwhile, when the weight 222 is disposed, the moment counterclockwise in fig. 7 generated by the weight force of the weight 222 should be lower than the moment clockwise in fig. 7 generated by the weight force of the second pulley 221, that is, the second pulley 221 should tend to move away from the first pulley 211 to maintain a certain internal tension of the cable connected between the second pulley 221 and the first pulley 211.

When the tension is too large, the cable will pull the cross bar 220 to turn around the rotating shaft to the upper end of the vertical bar 210, so that the distance between the second pulley 221 and the first pulley 211 is shortened, and the cable is loosened; when the tension is too small, the gravity of the second pulley 221 will pull the cross bar 220 to rotate away from the upper end of the vertical bar 210 around the rotating shaft, so that the distance between the second pulley 221 and the first pulley 211 is increased, and the cable is tensioned. Therefore, by providing the first tension wheel set 200, the tension of the cable between the first wrapping machine 100 and the second wrapping machine 300 can be automatically adjusted to a certain degree.

After receiving the cable wrapped by the insulating layer, the cable continues to advance to the second wrapping machine 300 under traction after receiving and releasing the stress in the cable and adjusting the tension in the cable. The second around chartered plane 300 the structure with first structure around chartered plane 100 is the same, and the difference only lies in the tape of wrapping of placing in the tape reel 165 around the package differently, and first around chartered plane 100 is the insulating layer, and the second is internal shield layer around chartered plane 300's tape. The structure of the second wrapping machine 300 will not be described in detail herein.

After the cable receiving the inner shielding layer is wrapped, the cable penetrates out of the second wrapping machine 300 and continues to move to the second tension wheel set 400.

Specifically, as shown in the front view of fig. 8, the second tension wheel set 400 includes a support 410 placed on a horizontal plane, the support 410 includes a vertical force-bearing frame 415, the force-bearing frame 415 is preferably configured as two parallel force-bearing frames, and two vertical slide rods, i.e., a first slide rod 420 and a second slide rod 430, are respectively disposed on two sides of the force-bearing frame 415. Two pulleys are rotatably arranged on the force-bearing frame 415 in the vertical direction in an up-down position, wherein a third pulley 411 is fixed at the lower part of the force-bearing frame 415, and a fourth pulley 421 is arranged at the upper part of the force-bearing frame 415. The fourth pulley 421 can slide up and down along the first slide rod 420, specifically: the fourth pulley 421 is rotatably disposed on a sliding block 425, and the sliding block 425 is slidably sleeved on the first sliding rod 420. As shown in the side view of fig. 9, a connecting chain 440 is connected to the sliding block 425, the connecting chain 440 passes around the fixed pulley at the upper end of the force-receiving frame 415, extends downward from the other surface of the force-receiving frame 415, and is connected to a weight plate 433, and the weight plate 433 is engaged with the second sliding rod 430 at the other surface of the force-receiving frame 415, and is also slidable up and down. Weights 432 of different masses are placed on the weight plates 433 to adjust the tension of the fourth pulley 421 on the cable. The cable leaving the second wrapping machine 300 is simultaneously wound on the third pulley 411 and the fourth pulley 421 for at least one turn. When the weight block 432 is disposed, the weight block 432 should have a gravity at least greater than that of the fourth pulley 421, that is, the fourth pulley 421 should tend to move upward away from the third pulley 411 to maintain a certain internal tension of the cable connected between the fourth pulley 421 and the third pulley 411.

When the tension is too large, the cable will pull the fourth pulley 421 to go down along the first slide rod 420, so that the distance between the fourth pulley 421 and the third pulley 411 is shortened, and the cable is released; when the tension is too small, the fourth pulley 421 will move toward the upper end of the force-bearing frame 415 under the gravity of the weight block 432 connected by the connecting chain 440, so that the distance between the fourth pulley 421 and the third pulley 411 increases, and the cable is tensioned. Thus, by providing the second tension roller set 400 and the weight block 432 with a certain mass, the tension of the cable between the second wrapping machine 300 and the cable knitting machine 600 can be automatically adjusted to a certain degree.

In a better embodiment, two guide wheels (not shown) may be disposed on two sides of the force-bearing frame 415 of the second tension wheel set 400, and the two guide wheels are symmetrically disposed. In operation, the cable is fed horizontally, passes through the first guide wheel, then passes through the third pulley 411 and the fourth pulley 421, then passes through the third pulley 411, and finally passes through the second guide wheel, and moves continuously along the horizontal direction. The cable is tensioned between said third pulley 411 and said fourth pulley 421, and the two guide wheels adjust the direction of movement of the cable and stabilize the tension of the cable.

After receiving the cable wrapped by the inner shielding layer, releasing the stress in the cable, and adjusting the tension in the cable, the cable continuously moves forward under traction and enters the cable braiding machine 600.

As shown in fig. 11 to 13, a cable knitting machine includes: a frame 640, wherein the frame 640 is provided with a working table 641; the work table 641 is provided with a plurality of weaving assemblies. The knitting assembly is rotatably connected with the working table 641 through a first rotating shaft 632; the center of the work table 641 is provided with a cable through hole 642. A wire passing pipe 645 perpendicular to the workbench surface 641 is disposed at the cable through hole 642, and a cable outlet and a cable inlet are respectively formed at the upper end and the lower end of the wire passing pipe 645. The wire passing pipe 645 is arranged, so that the braided wire is ensured to be naturally straightened before being wrapped by the outer shielding layer, deformation cannot be caused under the action of traction force, and the probability of breakage is reduced.

At least one second guide wheel 643 is arranged above the working table 641, and the second guide wheel 643 is rotatably connected with the frame 640 through a rotating shaft.

At least one first guide wheel 644 is arranged below the working table 641, and the first guide wheel 644 is rotatably connected with the frame 640 through a rotating shaft.

The cable wrapped with the inner shielding layer is wound around the first guide wheel 644 located below the working table 641, passes through the wire passing pipe 645 from bottom to top, is wound around the second guide wheel 643 located above the working table 641, is led out, and is wound to the wire winding wheel 730.

In a preferred embodiment, a position-limiting cylinder 646 fixedly connected to the frame 640 is further disposed right above the wire-passing pipe 645. After the cable passes through the wire passing tube 645, the braided wire (metal wire) led out from the braided assembly wraps the cable, and the cable wrapped with the outer shielding layer passes through the limiting cylinder 646 and then is bridged over the second guide wheel 643. The position-limiting cylinder 646 is arranged to enable the processed cable to be wound on the second guide wheel 643 in a better straight manner.

As shown in fig. 12, the braiding assembly comprises: a first rotary plate 630 rotatable about a first rotary shaft 632; a motor (not shown) for driving the first rotary plate 630 to rotate is arranged below the first rotary plate 630; the first rotary plate 630 is provided with a second rotary plate 631 which protrudes upward out of the surface of the first rotary plate 630, a second rotary shaft 633 passes through the center of the second rotary plate 631, and the second rotary plate 631 can rotate around the second rotary shaft 633.

In a preferred embodiment, at least two, for example three, second rotating discs 631 are disposed on the first rotating disc 630, and three second rotating discs 631 are disposed on the upper surface of the first rotating disc 630 around the first rotating shaft 632.

A spindle is fixedly connected above each second rotary disc 631. In a preferred embodiment, as shown in fig. 13, the spindle comprises:

the base 601, the base 601 with the second carousel 631 passes through four fixed screws 634 fixed connection, be equipped with two blocks of curb plates 602 on the base 601.

A line carrying shaft 603 penetrates between the side plates 602, and a paying-off wheel 621 wound with braided wires is rotatably sleeved on the line carrying shaft 603; one end of the spool 603 extends through one of the side plates 602 and is connected to a wheel 604 having teeth around its circumference.

Openings are formed in the two side plates 602, a connecting shaft 605 is arranged between the openings, a third guide wheel 606 is arranged on the connecting shaft 605, and the third guide wheel 606 can rotate around the connecting shaft 605; the braided wire on the paying-off wheel 621 bypasses the third guide wheel 606 on the connecting shaft 605 and then is output.

Two ends of the connecting shaft 605 extend out of the opening and are respectively connected with a sliding block 607, a guide column 608 in the vertical direction penetrates through the sliding block 607, one end of the guide column 608 is fixedly connected with the base 601, the other end of the guide column 608 is fixedly connected with the outer wall of the side plate 602 through a first fixing block 609, and the first fixing block 609 is fixedly connected with the outer wall of the side plate 602 through a bolt. A tension spring 610 is sleeved on the guide post 608, and the tension spring 610 is arranged between the first fixing block 609 and the sliding block 607.

A second fixed block 611 is further arranged on the outer wall of the side plate 602 provided with the rotating wheel 604, a through hole penetrating through the second fixed block 611 is arranged on the second fixed block 611, a brake lever 612 penetrates through the through hole and can slide up and down along the second fixed block 611, and the brake lever 612 is positioned above the slider 607; the top end of the brake lever 612 is connected to a first end of a shift lever 613, a second end of the shift lever 613 is located below the rotating wheel 604 and above the first fixed block 609, and the shift lever 613 is rotatably connected to the outer wall of the side plate 602 through a rotating shaft 614 in a region between the first end and the second end thereof. In a preferred embodiment, the second end of the driving lever 613 is provided with a protrusion facing the wheel 604, and the distance between adjacent teeth of the wheel 604 is capable of accommodating the insertion of the protrusion.

The bottom end of the brake lever 612 is provided with a bushing 615. A return spring 616 is sleeved on the brake rod 612, and the return spring 616 is arranged between the second fixed block 611 and the sleeve 615. The brake lever 612 descends when not being subjected to external force, and automatically returns under the action of the return spring 616.

The top of the two side plates 602 is fixedly provided with a top plate 618, and the top plate 618 is provided with a universal bearing 619. The upper end of the universal bearing 619 is fixedly connected with a guide rod 620, and two fourth guide wheels 622 are arranged on the guide rod 620. The knitting yarn is led out from the spindle, passes through the two fourth guide wheels 622 and reaches a knitting point where the knitting yarn is crossed.

In addition, a handle (not shown in the figure) is further arranged on one side of the sliding block 607, so that manual operation is facilitated, the spindle of the cable braiding component stops operating, and braking is manually achieved.

The cable wrapped with the braided wire is wound out from the second guide wheel 643 of the cable braiding machine, passes around the fifth guide wheel 760 of the take-up mechanism 700, and is wound around the take-up pulley 730 of the take-up mechanism 700. The fifth guide wheel 760 is arranged at the top of the mounting seat 710, the mounting seat cover 710 is arranged on the lead screw 740, the lead screw 740 is driven by a first rotary driving motor 750 capable of rotating in two directions to rotate, the fifth guide wheel 760 is driven to move from one end of the lead screw 740 to the other end of the lead screw and reciprocate back and forth, and the speed of the reciprocating motion is determined by the rotating speed of the first rotary driving motor 750; the take-up pulley 730 is sleeved on a rotating shaft 731, and the rotating shaft 731 is driven by a second rotating driving motor 751 to rotate. When the take-up pulley 730 rotates for one turn, the fifth guide wheel 760 moves for a linear diameter distance along the lead screw 740, so that the take-up pulley 730 tightly takes up the wire.

Specifically, fig. 14 shows a schematic structural diagram of a wire rewinding mechanism 700. As shown in fig. 14, the wire rewinding mechanism 700 includes a base 701, and the base 701 is placed on a horizontal ground and disposed horizontally. A bracket 702 is arranged on the base 701, and the bracket 702 comprises two side brackets 720. A horizontal rotating shaft 731 is connected between the side brackets 720, both ends of the rotating shaft 731 are rotatably mounted and connected with the bracket 702, and the rotating shaft 731 can rotate around the axial direction and is used for winding cables.

The two side brackets 720 are provided with second rotation bearings, one end of the rotation shaft 731 is connected to the rotation part of the second rotation bearing on one side bracket 720, and the other end is connected to the rotation part of the second rotation bearing on the other side bracket 720.

The rotating shaft 731 is provided with a take-up pulley 730, and the cable is wound on the take-up pulley 730, so that the take-up pulley 730 can be more conveniently removed and replaced. The take-up pulley 730 is preferably i-shaped in cross-section, i.e., has equal widths at different heights, so that each layer can hold equal numbers of coils at different heights.

In a more preferred embodiment, the second rotary driving motor 751 is connected to the rotary shaft 730 to be driven to rotate by a belt. The advantage of using a strap connection is that the tightness of the strap can be easily adjusted to ensure uniformity of rotation, i.e. uniformity of the take-up of the cable.

A horizontal lead screw 740 is further connected between the two side brackets 720, the lead screw 740 is parallel to the rotating shaft 731, the lead screw 740 is mounted on the bracket 702 in a manner of rotating around the axial direction, particularly, the lead screw is connected between the two side brackets 720, for example, fixed blocks are respectively arranged on the two side brackets 720, rotating bearings are arranged in the fixed blocks, and two ends of the lead screw 740 are respectively fixed with the rotating parts of the rotating bearings in the fixed blocks, so that the lead screw can be driven to rotate around the axial direction.

Specifically, the lead screw 740 is connected to a first rotation driving motor 750, and a rotation driving shaft of the first rotation driving motor 750 rotates a rotation portion that drives a rotation bearing in one of the fixed blocks. The first rotation driving motor 750 can drive the lead screw 740 to rotate in both the forward and reverse directions in the axial direction. So as to drive the mounting seat 710 on the lead screw 740 and the fifth guide wheel 760 on the mounting seat 710 to perform forward and backward bidirectional translation along the axial direction of the lead screw 740. That is, the cables drawn from the fifth guide wheel 760 are sequentially wound around the take-up pulley 730.

The central axis of the fifth guide wheel 760 should be parallel to the rotation axis 731 so as to ensure that the cable is directed toward the rotation axis 731 in a vertical direction after passing through the fifth guide wheel 760, thereby being wound around the rotation axis 731 or the take-up pulley 730 in a vertical direction.

In actual operation, it is only necessary to set the rotation speed of the lead screw 740 to match the rotation speed of the rotating shaft 731, that is, when the rotating shaft 731 rotates for one cycle, the mounting seat 710 can translate exactly one radial distance of the wound cable in the axial direction under the rotation driving of the lead screw 740, so that the cable can be guided to be wound at different positions of the take-up pulley 730, and thus, the uniform winding and arrangement of the cable can be realized.

Example four:

fig. 15 is a flow chart of a method of producing a coaxial cable of the preferred embodiment.

As shown in fig. 5, a method of producing a coaxial cable includes:

In conclusion, the coaxial cable and the production equipment and method thereof provided by the invention have the advantages of reasonable design, good working performance, capability of being carried out automatically in the whole process, great reduction in manual work and improvement in production efficiency.

The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.

Claims

1. A production facility of coaxial cable which characterized in that: the device comprises insulating layer cladding equipment, inner shielding layer cladding equipment and outer shielding layer cladding equipment which are sequentially arranged along the direction of a production line;

the outer shielding layer coating equipment comprises a cable braiding machine for coating the outer shielding layer on the outer surface of the inner shielding layer, and a take-up mechanism which is positioned at the downstream of the cable braiding machine and used for winding the cable coated with the outer shielding layer onto a reel;

wherein, first around chartered plane or the second includes around the chartered plane:

2. The apparatus of claim 1, wherein at least two of the connecting rods of the first wrapping machine or the second wrapping machine are radially arranged around the central tube.

3. The apparatus for producing coaxial cable of claim 2, wherein the two connection rods of the first wrapping machine or the second wrapping machine are combined into a diameter.

4. The apparatus for producing coaxial cable according to claim 1, wherein the first tension wheel set comprises: a vertical rod and a cross rod which can be relatively and rotatably connected through a rotating shaft; a first pulley is rotatably arranged on the vertical rod; dividing the cross bar into two parts, namely a first part and a second part, by taking the rotating shaft as a boundary; the outer end of the first part is provided with a counterweight; a second pulley is rotatably disposed on the second portion.

5. The apparatus for producing a coaxial cable according to claim 1, wherein the second tension pulley set comprises: a stress frame is erected on a horizontal support, and two sides of the stress frame are respectively provided with a sliding rod; and a third pulley is fixed at the lower part of the stress frame, a fourth pulley is arranged at the upper part of the same surface of the stress frame, and the fourth pulley slides up and down along the sliding rod.

6. The apparatus for producing a coaxial cable according to claim 1, wherein: the first wrapping machine with between the first tension wheel group, and/or first tension wheel group with the second wrapping machine, and/or the second wrapping machine with between the second tension wheel group, still be equipped with the direction wheelset, the direction wheelset includes the leading wheel that two at least horizontal directions set up.

7. The apparatus for producing coaxial cable according to claim 1, wherein the cable braiding machine comprises:

8. The apparatus for producing a coaxial cable according to claim 1, wherein the take-up mechanism comprises: