CN113078437A

CN113078437A - Coaxial line doubling method and structure

Info

Publication number: CN113078437A
Application number: CN202110470528.5A
Authority: CN
Inventors: 李兵
Original assignee: Lanto Electronic Ltd
Current assignee: Lanto Electronic Ltd; Kunshan Liantao Electronics Co Ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-07-06

Abstract

The invention discloses a coaxial cable doubling method and a structure, belonging to the technical field of cables, wherein the coaxial cable doubling method comprises the steps of forming an insulating medium outside each core wire; forming an outer conductor which covers the insulating medium outside each insulating medium, and obtaining a plurality of first structures; arranging a plurality of first structures side by side, wherein the axes of the first structures are parallel to each other; welding the outer conductors of two adjacent first structures into a whole to obtain a second structure; and forming sheath layers outside the second structure and between two adjacent first structures to obtain a coaxial line doubling structure. The coaxial line doubling method and the coaxial line doubling structure provided by the invention can reduce the workload of doubling, are time-saving and labor-saving, have higher efficiency and lower reject ratio, and have more consistent grounding effect and grounding quality of the coaxial line doubling structure obtained after doubling.

Description

Coaxial line doubling method and structure

Technical Field

The invention relates to the technical field of cables, in particular to a coaxial line doubling method and a coaxial line doubling structure.

Background

The coaxial line is a guided system formed by two coaxial cylindrical conductors, and air or a high-frequency medium is usually filled between the inner conductor and the outer conductor of the coaxial line, so that the coaxial line can be used as broadband microwave transmission. Generally, the outer conductor of the coaxial line is grounded, and an electromagnetic field is limited between the inner conductor and the outer conductor, so that the coaxial line has little radiation loss and is hardly interfered by external signals.

The coaxial line comprises an inner conductor, an insulating medium wrapped outside the inner conductor, an outer conductor wrapped outside the insulating medium and a sheath wrapped outside the outer conductor. In a product, a plurality of coaxial lines are generally present, and a requirement that the coaxial lines are connected in parallel and are grounded exists. In the prior art, the parallel connection of the two coaxial lines is realized through soldering tin, and the operation process of the soldering tin is as follows: the partial sheaths of the two coaxial lines are separated so as to expose partial outer conductors, then tin pre-wetting is carried out on the outer conductors of the two coaxial lines respectively, namely tin is fixed on the two exposed outer conductors, then the two coaxial lines are aligned and pre-wired, so that the tin wetting on the two coaxial lines can be contacted, and finally tin soldering is carried out on the tin wetting on the two coaxial lines so as to realize the common grounding of the two coaxial lines.

However, in order to ensure the grounding effect, a plurality of parallel connection points are generally required to be arranged on the coaxial line, and the operator needs to perform the soldering operation on each of the parallel connection points, so that the workload of parallel connection is large, time and labor are wasted, the defect rate is high, and the grounding effect after parallel connection is not uniform with the grounding quality.

Disclosure of Invention

The invention aims to provide a coaxial line doubling method and structure, which can reduce the workload of doubling, save time and labor, have higher efficiency and lower reject ratio, and ensure that the grounding effect and the grounding quality of a coaxial line doubling structure obtained after doubling are more consistent.

As the conception, the technical scheme adopted by the invention is as follows:

a coaxial line doubling method comprises the following steps:

s1, forming an insulating medium outside each core wire;

s2, forming an outer conductor wrapping the insulating medium outside each insulating medium, and obtaining a plurality of first structures;

s3, arranging the first structures side by side, and making the axes of the first structures parallel to each other;

s4, welding the outer conductors of the two adjacent first structures into a whole to obtain a second structure;

and S5, forming sheath layers outside the second structure and between two adjacent first structures to obtain a coaxial wire doubling structure.

Optionally, in step S4, the welding manner between two adjacent first structures is continuous welding, or the welding manner between two adjacent first structures is spot welding, and the welding points are distributed at intervals.

Optionally, in step S4, the material used for welding is tin solder.

Optionally, in step S5, after the sheath layer is formed outside the second structure and between two adjacent first structures, a notch is formed on a portion of the sheath layer between two adjacent outer conductors, and the notch extends toward the center of two adjacent core connection lines.

A coaxial cabling structure, comprising:

the inner conductor comprises a plurality of core wires arranged side by side, and the axes of the core wires are parallel to each other;

a plurality of insulating mediums are arranged, the insulating mediums correspond to the core wires one by one, and the insulating mediums are coated outside the corresponding core wires;

a plurality of outer conductors which correspond to the insulating mediums one by one and are arranged outside the corresponding insulating mediums;

the welding block is formed between the two adjacent outer conductors in a welding mode and is used for connecting the two adjacent outer conductors;

and the sheath layer coats the outer conductor and the welding block.

Optionally, there is one welding block between two adjacent outer conductors, and the welding block extends from one end of the outer conductor to the other end of the outer conductor, or there are a plurality of welding blocks between two adjacent outer conductors, and the plurality of welding blocks are arranged at intervals.

Optionally, the outer conductor is spirally disposed on the outer side of the insulating medium, or the outer conductor is woven on the outer side of the insulating medium.

Optionally, a cutting groove is arranged on a part of the sheath layer between two adjacent outer conductors, and the cutting groove extends towards the center of two adjacent core wire connecting wires.

Optionally, the jacket layer is made of a thermoplastic material, and a flame retardant and an anti-aging agent are added into the jacket layer.

Optionally, the inner conductor comprises silver plated soft copper wire or tin plated soft copper wire, and the outer conductor comprises silver plated soft copper wire or tin plated soft copper wire.

The invention has at least the following beneficial effects:

according to the coaxial line doubling method and structure, after the outer conductor is formed outside the insulating medium and the first structures are obtained, the plurality of first structures are arranged side by side, then two adjacent first structures are welded to obtain the second structure, and finally the sheath layer is formed outside the second structure, so that the post-process welding doubling step is adjusted to the pre-process welding doubling step, the coaxial line doubling is facilitated, the workload of the doubling is reduced, time and labor are saved, the efficiency is higher, the reject ratio is lower, and the grounding effect and the grounding quality after the doubling are more consistent.

Drawings

Fig. 1 is a flowchart of a coaxial cable doubling method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of two first structures provided in the first embodiment of the present invention;

FIG. 3 is a schematic view of two first structures after welding according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a coaxial cable parallel structure according to a second embodiment of the present invention;

fig. 5 is an axial cross-sectional view of a coaxial cable parallel structure according to a second embodiment of the present invention;

fig. 6 is an axial cross-sectional view of another coaxial cable doubling structure provided in the second embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a coaxial cable doubling structure according to a second embodiment of the present invention;

fig. 8 is another schematic cross-sectional view of a coaxial cable doubling structure according to a second embodiment of the present invention.

In the figure:

1. an inner conductor; 11. a core wire; 2. an insulating medium; 3. an outer conductor; 4. welding the blocks; 5. a sheath layer; 51. grooving; 10. a first structure.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

The embodiment provides a coaxial cable doubling method, which is used for performing doubling processing on a plurality of coaxial cables and has high doubling efficiency and low reject ratio.

As shown in fig. 1, the coaxial line doubling method includes the following steps:

and S1, forming an insulating medium outside each core wire.

Before step S1, a plurality of core wires 11 may be prepared, the length and thickness of the plurality of core wires 11 are the same, and the core wires 11 are used to form the inner conductor 1 of the coaxial wire parallel structure. Copper is the primary material of the core wire 11, and the core wire 11 may be in the form of: annealed copper wire, annealed copper tube, copper clad aluminum, silver plated soft copper wire or tin plated soft copper wire. Usually, the inner conductor 1 of the thin coaxial cable parallel structure is a copper wire or a copper-clad aluminum wire, and the thick coaxial cable parallel structure adopts a copper tube to reduce the weight and the cost of the coaxial cable parallel structure. In step S1, the outer layer of each core wire 11 may be covered with a layer of insulating medium 2 by an extrusion device, and the thickness of the insulating medium 2 may be determined according to actual needs. The insulating medium 2 in this embodiment is mainly used to improve the anti-interference performance, the waterproof performance and the oxygen corrosion resistance of the coaxial cable parallel structure.

And S2, forming an outer conductor which covers the insulating medium outside each insulating medium, and obtaining a plurality of first structures.

The outer conductor 3 can conduct low voltage through the transmission loop and has a shielding function. In this embodiment, the outer conductor 3 may be spirally disposed on the outer side of the insulating medium 2, that is, the outer conductor 3 is formed by winding a wire around the surface of the insulating medium 2, or the outer conductor 3 is disposed on the outer side of the insulating medium 2 in a braided manner, and the outer conductor 3 having the above two structures has a better bending performance. In addition, in some embodiments, the outer conductor 3 may be a combination of a woven mesh and a longitudinal aluminum-plastic composite tape, which is developed from a single woven mesh structure, and has the advantages of good flexibility, light weight, reliable joint, and the like, and the shielding performance of the outer conductor 3 can be effectively improved by adopting a reasonable composite structure. In other embodiments, the outer conductor 3 may also be a metal tubular or aluminum plastic composite tape longitudinal lapping structure, the metal tubular outer conductor 3 has the best shielding performance, and the aluminum plastic composite tape longitudinal lapping structure also has better shielding performance and lower manufacturing cost. After forming the outer conductor 3 outside the insulating medium 2, a first structure 10 as shown in fig. 2 can be obtained, that is, the first structure 10 includes a core wire 11, the insulating medium 2 wrapped around the core wire 11, and the outer conductor 3 wrapped around the insulating medium 2.

And S3, arranging the plurality of first structures side by side, and enabling the axes of the plurality of first structures to be parallel to each other.

After obtaining the plurality of first structures 10, as shown in fig. 2, the plurality of first structures 10 are arranged side by side so that the axes of the plurality of first structures 10 are parallel to each other, thereby facilitating subsequent welding.

And S4, welding the outer conductors of the two adjacent first structures into a whole, and obtaining a second structure.

In step S4, two adjacent outer conductors 3 may be welded using an automated welding apparatus to obtain the second structure shown in fig. 3. In order to facilitate the connection of the two outer conductors 3, fig. 3 shows a solder bump 4 which is situated between the two outer conductors 3 and is produced by soldering.

Alternatively, in step S4, the welding method between two adjacent first structures 10 is continuous welding, and in this case, as shown in fig. 6, the welding block 4 between two outer conductors 3 is a single block, and the welding method can ensure the connection strength and the connection reliability between two outer conductors 3. Alternatively, the welding manner between two adjacent first structures 10 is spot welding, and the welding points are distributed at intervals, and each welding point forms one welding block 4, that is, as shown in fig. 5, the welding blocks 4 between two outer conductors 3 are distributed at intervals, so that the workload during welding can be reduced. Alternatively, the material used for welding two adjacent outer conductors 3 is tin solder.

It should be noted that the second structure may include a plurality of first structures 10, and a welding block 4 is present between any two adjacent first structures 10 in the plurality of first structures 10, so as to implement the parallel connection common ground of the plurality of first structures 10.

Referring to fig. 7 and 8, the sheath layer 5 covers the outer conductor 3 and the solder bumps 4 and protects the outer conductor 3 and the solder bumps 4. In some embodiments, outer conductor 3 and weld block 4 may be coated with a jacket layer 5 by an extrusion apparatus. It should be noted that, as shown in fig. 8, the sheath layer 5 can fill the gap between two adjacent outer conductors 3 to prevent the coaxial line structure from collapsing.

In the coaxial cable doubling method provided by the embodiment, after the outer conductor 3 is formed outside the insulating medium 2 and the first structures 10 are obtained, the plurality of first structures 10 are arranged side by side, then the two adjacent first structures 10 are welded to obtain the second structure, and finally the sheath layer 5 is formed outside the second structure, so that the post-processing welding doubling step is adjusted to be the pre-processing welding doubling step, the coaxial cable doubling is convenient, the workload of the doubling is reduced, the time and the labor are saved, the efficiency is higher, the reject ratio is lower, and the grounding effect and the grounding quality after the doubling are more consistent.

Alternatively, in step S5, after forming the sheath layer 5 outside the second structure and between two adjacent first structures 10, as shown in fig. 7, a notch 51 is formed in a portion of the sheath layer 5 between two adjacent outer conductors 3, and the notch 51 extends toward the center of the connecting line between two adjacent core wires 11. The cutting slot 51 is used for marking a coaxial line doubling structure, and in some embodiments, the cutting slot 51 is a circular arc-shaped slot to facilitate the processing of the cutting slot 51.

Example two

The present embodiment provides a coaxial cable doubling structure, which is manufactured by the coaxial cable doubling method according to the above embodiment.

As shown in fig. 2 to 8, the coaxial cable parallel structure includes an inner conductor 1, an insulating medium 2, an outer conductor 3, a solder block 4, and a sheath layer 5.

The inner conductor 1 includes a plurality of core wires 11 arranged side by side, and axes of the plurality of core wires 11 are parallel to each other, that is, extending directions of the plurality of core wires 11 are the same. The number of the insulating mediums 2 is multiple, the insulating mediums 2 correspond to the core wires 11 one by one, and each insulating medium 2 covers the corresponding core wire 11. The outer conductors 3 are provided in plurality, the outer conductors 3 correspond to the insulating mediums 2 one by one, and each outer conductor 3 is arranged outside the corresponding insulating medium 2. The welding block 4 is formed between two adjacent outer conductors 3 by welding, and the welding block 4 is present between any two adjacent outer conductors 3. The solder bumps 4 are used to electrically connect two adjacent outer conductors 3, so that the plurality of outer conductors 3 can be connected in parallel to a common ground. The sheath layer 5 coats the outer conductors 3 and the welding blocks 4, and the sheath layer 5 can be filled in a gap between every two adjacent outer conductors 3.

The coaxial line doubling structure that this embodiment provided, through the welding piece 4 that is located between two adjacent outer conductors 3, electric connection between these two adjacent outer conductors 3 has been realized, make a plurality of outer conductors 3 can realize that the doubling is common ground, and coaxial line doubling structure during manufacturing, can be with back processing procedure welding doubling step adjustment for preceding processing procedure welding doubling step, the doubling of the coaxial line of being convenient for, the work load of doubling has been reduced, time saving and labor saving, higher efficiency and lower defective rate have, grounding effect and grounding quality after the doubling are more unanimous.

Alternatively, as shown in fig. 6, there is one solder bump 4 between two adjacent outer conductors 3, and the solder bump 4 extends from one end of the outer conductor 3 to the other end of the outer conductor 3, or, as shown in fig. 5, there are a plurality of solder bumps 4 between two adjacent outer conductors 3, and the plurality of solder bumps 4 are disposed at intervals.

In the present embodiment, the outer conductor 3 is provided outside the insulating medium 2 in a spiral shape, or the outer conductor 3 is provided outside the insulating medium 2 in a braided shape.

Further, as shown in fig. 7, the sheath layer 5 is provided with a slit 51 at a portion between two adjacent outer conductors 3, the slit 51 extending toward the center of the connecting line of two adjacent core wires 11. In some embodiments, the material of sheath layer 5 is a thermoplastic material, that is, sheath layer 5 can flow and deform when heated, and can maintain a certain shape after cooling. And a flame retardant and an anti-aging agent are added into the sheath layer 5. Optionally, the flame retardant in this embodiment is a non-halogen flame retardant, and the non-halogen flame retardant can effectively suppress generation of a flammable gas, so as to achieve the purpose of preventing combustion from spreading.

Alternatively, the inner conductor 1 in the present embodiment includes a silver-plated soft copper wire or a tin-plated soft copper wire, and the outer conductor 3 includes a silver-plated soft copper wire or a tin-plated soft copper wire.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A coaxial line doubling method is characterized by comprising the following steps:

s1, forming an insulating medium outside each core wire;

2. The coaxial cable doubling method according to claim 1, wherein in step S4, the welding manner between two adjacent first structures is continuous welding, or the welding manner between two adjacent first structures is spot welding, and the welding points are spaced apart.

3. The coaxial cable doubling method according to claim 2, wherein in step S4, the material used for welding is tin solder.

4. The coaxial cable doubling method according to any one of claims 1 to 3, wherein in step S5, after the sheath layer is formed outside the second structure and between two adjacent first structures, a notch is formed in a portion of the sheath layer between two adjacent outer conductors, the notch extending toward a center of a connection line of two adjacent core wires.

5. A coaxial cable doubling structure, comprising:

an inner conductor (1) comprising a plurality of core wires (11) arranged side by side, the axes of the plurality of core wires (11) being parallel to each other;

a plurality of insulating mediums (2) are arranged, the insulating mediums (2) correspond to the core wires (11) one by one, and the insulating mediums (2) are coated outside the corresponding core wires (11);

a plurality of outer conductors (3) are arranged, the plurality of outer conductors (3) correspond to the plurality of insulating mediums (2) one by one, and the outer conductors (3) are arranged outside the corresponding insulating mediums (2);

the welding block (4) is formed between two adjacent outer conductors (3) in a welding mode and is used for connecting the two adjacent outer conductors (3);

the sheath layer (5), the sheath layer (5) cladding outer conductor (3) and weld piece (4).

6. The coaxial cable doubling structure according to claim 5, wherein one welding block (4) is arranged between two adjacent outer conductors (3), and the welding block (4) extends from one end of the outer conductor (3) to the other end of the outer conductor (3), or a plurality of welding blocks (4) are arranged between two adjacent outer conductors (3), and the plurality of welding blocks (4) are arranged at intervals.

7. The coaxial cable doubling structure according to claim 5, wherein the outer conductor (3) is spirally disposed outside the insulating medium (2), or the outer conductor (3) is woven outside the insulating medium (2).

8. The coaxial cable doubling structure according to claim 5, wherein a portion of the sheath layer (5) between two adjacent outer conductors (3) is provided with a notch (51), and the notch (51) extends toward a center of a connecting line of two adjacent core wires (11).

9. The coaxial cable doubling structure according to any one of claims 5 to 8, wherein the material of the sheath layer (5) is a thermoplastic plastic material, and a flame retardant and an anti-aging agent are added into the sheath layer (5).

10. Coaxial cable parallel structure according to any of claims 5-8, characterized in that the inner conductor (1) comprises a silver-plated soft copper wire or a tin-plated soft copper wire and the outer conductor (3) comprises a silver-plated soft copper wire or a tin-plated soft copper wire.