CN101866714B - Indoor compressed cable for digital communication and manufacturing method thereof - Google Patents

Abstract

The invention relates to a flat digital communication cable for indoor use, which includes a plurality of wire pairs and a sheath covering the periphery of the plurality of wire pairs. Each wire pair includes two phase-twisted single wires. Each single wire is made of copper The wire is composed of a wire and an insulating layer covering the outer circumference of the copper wire. The multiple wire pairs are arranged in parallel to form a layer. The sheath is flat, and the inner side of the sheath is attached to each wire pair. Multiple wire pairs of the communication cable of the present invention are arranged vertically in a single layer, which increases the distance between wire pairs and improves the anti-crosstalk performance of the cable. The sheath adopts a flat method, which is more suitable for indoor covering, especially It can be installed at the corner of the wall or under the carpet. At the same time, the cable forming process of the present invention is relatively simple, and the production efficiency can be greatly improved.

Description

A kind of indoor compressed cable for digital communication and manufacturing approach thereof

Technical field

The present invention relates to a kind of telecommunication cable, relate in particular to a kind of flat telecommunication cable and manufacturing approach thereof that is used for indoor laying.

Background technology

The high speed development of Along with computer technology and network application, cable for digital communication in intelligent building, LAN and regional data switching network system applies be increasingly extensive, wherein the 4 pairs of non-shielding cable for digital communication of UTP consumptions account for more than 50%.

The non-shielding cable for digital communication of existing 4 couples of UTP is that 4 twisted pair wires with different pitches are twisted into circular cable core by S or Z direction, adds that need singly turn round man-hour or two this equipment of cabler of turning round is realized, processing technology is complicated.Simultaneously, round cable has when laying under the significant limitation, particularly carpet all the more so when indoor laying, and the application just is being based on the improvement of carrying out under the above-mentioned background situation.

Summary of the invention

The present invention seeks to provides a kind of pancake telecommunication cable that is suitable for indoor use for the deficiency that overcomes prior art.

For achieving the above object; The technical scheme that the present invention adopts is: a kind of indoor compressed cable for digital communication, comprise a plurality of lines to, be coated on the sheath of described a plurality of line to periphery, each described line is to comprising the single line of two mutually stranded settings; Every single line is made up of copper conductor and the insulating barrier that is coated on the copper conductor periphery; Described a plurality of line becomes one deck to the phase parallel arranged, and described sheath is flat, and sheath inboard with each line to being fitted.

Further, the right pair twist pitch of adjacent two lines is different, and preferred enforcement be, the right pair twist pitch of two lines that are provided with at interval is identical.

Go back cloth in the described sheath and be placed with at least one and tear rope, thereby can make things convenient for peeling off of cable.

In a kind of enforcement according to the technique scheme conversion, the center divide described line to replaceable for the identical loose tube fiber of external diameter, form optoelectronic composite cable.

The present invention also provides the method for making above-mentioned indoor compressed cable for digital communication, comprises the steps:

(1), select even number root single line, per two single lines are right to being twisted into line;

(2), with requisite number purpose line to arranging according to the order of sequence, and pass winding displacement plate successively;

(3), before getting into extrusion head, through right the beating of tension disc each line of control;

(4) thereby, line is the plastic extruding machine extrusion molding stranding of pancake mould to getting into the core rod die sleeve.

Because the utilization of technique scheme, the present invention compared with prior art has advantage: the mode of a plurality of lines of telecommunication cable of the present invention to adopting individual layer vertically to arrange, strengthened line to spacing distance; Improved the anti-cross-talk performance of cable; Its sheath adopts flat mode, is more suitable for covering indoor, is particularly suitable for the installation under wall turning and the carpet; Cable stranding operation of the present invention is simpler simultaneously, and production efficiency can be greatly improved.

Description of drawings

Accompanying drawing 1 is a kind of telecommunication cable of the technical scheme institute practical implementation according to the present invention;

Wherein: 1, line is right; 11, single line; 111, copper conductor; 112, insulating barrier;

2, sheath; 3, tear rope;

Embodiment

Below in conjunction with accompanying drawing, specify particular content of the present invention for example:

Telecommunication cable as shown in Figure 1; It mainly is made up of 1 cable core that is in parallel arranged to form mutually and the PVC sheath 2 that is coated on this cable core periphery four lines; Each line to 1 by two insulated single lines 11 with even stranded the forming of a constant pitch, every single line 11 is made up of copper conductor 111 and the HDPE insulating barrier 112 that is coated on copper conductor 111 peripheries.Sheath 2 is flat, and its inboard fits tightly 1 with each line mutually.

In order to optimize the cross-talk performance, adjacent two lines are variant to 1 pair twist pitch, in the present embodiment; The pair twist pitch is arranged for ease, and four lines are reduced to 2 kinds to 1 pair twist pitch, and are as shown in Figure 1; Four lines are to 1 by from left to right direction, and wherein, first line of left side is pair identical with the 3rd pitch that line is right in left side; Second line in left side is pair identical with the 4th pitch that line is right in left side, and the right pitch of first line of left side pair and second line in left side is different, and the pair twist pitch range is between 8～16mm.

Peeling off of cable also is provided with two in the inboard of sheath 2 and tears rope 3 for ease.

Telecommunication cable of the present invention can also be processed optoelectronic composite cable; Specifically with partial line to being replaced as loose tube fiber, as in the present embodiment, can comprise two lines to two loose tube fibers; The right external diameter of the external diameter of loose tube fiber and line is identical, thereby does not change the size of whole cable.

The telecommunication cable manufacturing process of the foregoing description is following:

At first, select eight single lines, per two right according to S or the stranded being aligned of Z direction, four lines are to adopting two kinds of pair twist pitches; Then, to adopting initiatively unwrapping wire, and keep four lines on four lines, successively through the winding displacement version, before getting into extrusion head, with tension disc control pair bounce or jump to arranging according to the order of sequence.The core rod die sleeve of extrusion head adopts half squash type flat molds, thus to the line that passes to upper jacket, the THICKNESS CONTROL of sheath is more than 0.5mm.

To sum up, the present embodiment telecommunication cable has following advantage:

1, simple in structure, saved the stranding operation one, reduced manufacturing cost;

2, simplify line to the pitch arrangement design, 4 lines have been reduced to 2 pair twist pitches to the pair twist pitch, improved product propagation delay and propagation delay difference performance index;

3, because be that individual layer is vertically arranged, strengthened line, effectively improved product cross-talk performance index spacing distance;

4, with respect to round cable, saved the cross isolating frame, reduced the outside diameter of cable;

5, the design of cable pancake is more suitable for laying in indoor, is particularly suitable for installing under wall turning and the carpet.

More than the specific embodiment of the utility model is illustrated and explains; But the utility model is not only limited to above embodiment; Be not limited to four like the right number of line, all equivalent transformations of doing according to the utility model all should be within the protection range of the utility model.

Claims (6)

1. indoor compressed cable for digital communication; By a plurality of lines to (1), be coated on described a plurality of line and sheath (2), the cloth of (1) periphery is placed in the described sheath (2) at least one tears rope (3) and form; Each described line comprises the single line (11) of two mutually stranded settings to (1); Every single line (11) is made up of copper conductor (111) and the insulating barrier (112) that is coated on copper conductor (111) periphery; It is characterized in that: described a plurality of lines become one deck to (1) phase parallel arranged, and adjacent two lines are different to the pair twist pitch of (1), and two lines that are provided with at interval are identical to the pair twist pitch of (1); Described sheath (2) is flat, and sheath (2) is inboard and each line is fitted (1).

2. indoor compressed cable for digital communication according to claim 1 is characterized in that: described line to (1) pair twist pitch range between 8～16mm.

3. indoor compressed cable for digital communication according to claim 1 is characterized in that: described line is 4～10 to (1).

4. indoor compressed cable for digital communication according to claim 1 is characterized in that: it is the identical loose tube fiber of external diameter that the center divides described line replaceable to (1), forms optoelectronic composite cable.

5. indoor compressed cable for digital communication according to claim 1 is characterized in that: described sheath (2) thickness is greater than 0.5mm.

6. a method of making the described indoor compressed cable for digital communication of claim 1 comprises the steps:

(1), select even number root single line, per two single lines are right to being twisted into line;

(2), with requisite number purpose line to arranging according to the order of sequence, and pass winding displacement plate successively;

(3), before getting into extrusion head, through right the beating of tension disc each line of control;

(4) thereby, line is the plastic extruding machine extrusion molding stranding of pancake mould to getting into the core rod die sleeve.

Images