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Three-core cable and manufacturing method thereof

A three-core cable and isolation bar technology, which can be used in cable/conductor manufacturing, insulating cables, insulating conductors/cables, etc., and can solve the problems of restricting production speed and slow insulation core speed.

Inactive Publication Date: 2014-06-18
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the conductor of this kind of cable is twisted by tiny metal wires, so the production of a cable needs to go through 3 times of wire bundle, 3 times of insulated core making, and 1 time of sheath extrusion; The production speed is slow, therefore, restricting the production speed

Method used

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  • Three-core cable and manufacturing method thereof
  • Three-core cable and manufacturing method thereof
  • Three-core cable and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0074] please see Figure 3 to Figure 6 , and combined with figure 1 and figure 2 , a three-core cable, including a first conductor 12, a second conductor 22, a third conductor 32 and a sheath layer 5; it is characterized in that it also includes a centrally located and cylindrical filler 1, a first A spacer 61, a second spacer 62, and a third spacer 63; the first conductor, the second conductor, the third conductor, the first spacer, the second spacer, and the third spacer are all close to each other. Filling body; the first spacer, the second spacer, and the third spacer separate the first conductor, the second conductor and the third conductor, and the end of the first spacer is closely attached to the first end of the second conductor, and the second The end of the conductor is close to the first end of the second spacer, the end of the second spacer is close to the head of the third conductor, the end of the third conductor is close to the head of the third spacer, the...

Embodiment 2

[0078] please see Figure 7 , and combined with Figure 1 to Figure 6 , a three-core cable, including a first conductor 12, a second conductor 22, a third conductor 32 and a sheath layer 5; it is characterized in that it also includes a centrally located and cylindrical filler 1, a first A spacer 61, a second spacer 62, and a third spacer 63; the first conductor, the second conductor, the third conductor, the first spacer, the second spacer, and the third spacer are all close to each other. The filling body; the first spacer, the second spacer, and the third spacer separate the first conductor, the second conductor, and the third conductor, and the first spacer, the second conductor, the second spacer, and the third conductor , the third isolation strip, and the first conductor are closely attached to each other in turn; the first isolation strip, the second isolation strip, and the third isolation strip are integrally formed with the sheath layer; the first isolation strip, ...

Embodiment 3

[0091] A method for making a three-core cable, characterized in that it comprises the steps of:

[0092] forming a plurality of wire bundles to form a first conductor, forming another plurality of metal wire bundles to form a second conductor, and then forming another plurality of metal wire bundles to form a third conductor;

[0093] the step of forming the filled body by means of an extruder;

[0094] the step of forming a first spacer strip by means of an extruder;

[0095] the step of forming a second spacer strip by means of an extruder;

[0096] the step of forming a third spacer strip by means of an extruder;

[0097] The filling body is placed in the center through the mold installed on the sheath extruder; the first conductor, the first spacer, the second conductor, the second spacer, the third conductor, and the third spacer are placed in the filling body in sequence and Clinging to the filling body; at the same time extruding the sheath layer outside the first co...

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Abstract

The invention belongs to the technical field of an electric wire cable and discloses a three-core cable. The three-core cable comprises a first conductor, a second conductor, a third conductor and a sheath layer; the three-core cable is characterized by further comprising a filler located in the middle, a first isolating strip, a second isolating strip and a third isolating strip, wherein three conductors and three isolating strips are tightly closed to the filler; three conductors are isolated by three isolating strips; the first isolating strip, the second conductor, the second isolating strip, the third conductor, the third isolating strip and the first conductor are connected in order; the three isolating strips are integrally shaped with the sheath layer; the three isolating strips are raised out from the inner wall of the sheath layer to the filler direction; the first conductor, the second conductor and the third conductor are coated by the sheath layer; and on any one cross section, curvatures of the surfaces of three isolating strips and three conductors pasted with the outer surface of the filler respectively are equal to each other. The three-core cable has the following beneficial effect of being few in consumption of the product sheath layer, finer in outside diameter, fewer in occupied space, lower in every cost, simpler in production processes and faster in speed.

Description

[0001] This application is a divisional application with application number: 201110226781.2, application date: August 8, 2011, and invention name: three-core cable and its manufacturing method. technical field [0002] The invention belongs to the technical field of wires and cables, in particular to a three-core cable and a manufacturing method thereof. Background technique [0003] In the prior art, cables have been widely used, commonly used 3-core cables such as figure 1 and figure 2 as shown, figure 1 is a three-dimensional schematic diagram, figure 2 for figure 1 The front view of the cable is composed of the first insulated core, the second insulated core and the third insulated core placed in parallel or twisted with each other, and the sheath layer 5 that covers the three insulated cores as a whole The first insulated wire core is composed of the first conductor 12 located inside and the first insulating layer 11 covering the first conductor; the second insula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B13/14H01B13/24H01B7/17H01B7/18H01B7/295
Inventor 胡小青王春霞胡村阳
Owner STATE GRID CORP OF CHINA
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