A tube extruding die and its preparation of special-shaped conductor cables

A conductor cable, special-shaped technology, applied in the direction of conductor/cable insulation, conductor, insulated conductor, etc., can solve the problem that the single wire is easy to be broken or pulled, the strand is easy to be scattered, and the take-up reel is easy to be scattered, etc. problems, to achieve the effect of reducing the total cost of the cable, avoiding the phenomenon of scattering, saving filling materials and sheath materials

Active Publication Date: 2016-09-07
白银有色长通电线电缆有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main technical problem to be solved by the present invention is that the monofilament of the five types of special-shaped conductors is easy to be crushed or broken, and the strands are prone to loose flowers and insulation cracks caused by torsional stress during the re-twisting extrusion process.
Avoid the phenomenon of scattered flowers in the process of re-twisting and extrusion of strands, and solve the problem of easy loosening of conductors after pressing to the take-up reel, thereby reducing the cost of cable quality

Method used

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  • A tube extruding die and its preparation of special-shaped conductor cables
  • A tube extruding die and its preparation of special-shaped conductor cables
  • A tube extruding die and its preparation of special-shaped conductor cables

Examples

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Effect test

Embodiment 1

[0036] Please refer to figure 1 , 2 , 3, 4, 5, the size of the core structure is limited by factors such as the diameter of the core sizing area, the diameter of the outer cylinder of the core sizing area, the length of the outer cylinder of the core sizing area, and the length of the cylinder in the sizing area. The diameter d1 in the core sizing area is designed according to the wear resistance of the selected material, the size of the semi-product (wire core or cable core), its material and the degree of regularity of the outer diameter, etc. The general design is: when insulating, d1=d 线芯 +(2~3)mm; when sheathed, d1=d 线芯 +(3~7)mm. Usually, when designing mold specifications, serialization should be considered, and the mold size should be adjusted to an integer; the diameter d2 of the outer cylinder of the core sizing area is determined by d1 and its wall thickness, that is, d2=d1+2, the design of this wall thickness is not only To take into account the life of the mold ...

Embodiment 2

[0041] 1) Selection of molds

[0042]The five types of special-shaped conductors adopt a designed extrusion die with a circular die core and a circular die sleeve when using plastic insulation. When the five types of special-shaped conductors are insulated with rubber, the die core is a circular die sleeve and the die sleeve is an oval extruded tube die sleeve.

[0043] 2) Adjust the conductor pressing wheel to the preset angle, press the five types of conductor 1 to the required angle (such as 90 ° C, 120 ° C, etc.), and then use polyester film 2 for non-overlapping 50% gap wrapping , which results in figure 1 The five types of shaped conductors shown.

[0044] 3) Cable

[0045] Improve the cabling die and runner of the insulated core, pre-twist in advance according to experience, and maximize the insulation thickness of the arc edge covered on the special-shaped conductor to be close to the calculated value, so as to obtain the smallest cabling and finished product outer ...

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Abstract

The invention discloses a pipe extrusion-type mold for extrusion of a plastic insulated cable and a method for preparing a special-shaped conductor cable by the pipe extrusion-type mold. Through the pipe extrusion-type mold, five types of special-shaped conductor insulated cable cores are processed to form the round special-shaped conductor cable so that unwrapping of the cable cores in compound stranding extrusion is avoided and the problem that the molded conductor cable fed to a take-up reel is easily unwrapped, so that a cable quality cost is reduced.

Description

technical field [0001] The invention relates to the technical field of wire and cable manufacturing, in particular to the technical field of a plastic insulated cable with five types of special-shaped conductors and an extrusion die for extrusion thereof. Background technique [0002] After the five types of special-shaped conductor insulation cores are cabled, they just form a circle, which can greatly reduce the cable filling material of the cable core, and at the same time reduce the outer diameter of the cable, so that the material consumption in the subsequent process can also be reduced, thereby reducing the cable manufacturing. cost, to meet the high-quality and low-cost requirements of the modern market for cable products. However, during the compaction process of the five types of special-shaped conductors, the compaction coefficient is small, only 10-20%. And in the process of compaction, the single wire of the five types of conductors is easy to be broken or pull...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/20H01B13/14B29C48/32
CPCB29C48/30B29C48/32H01B7/0009H01B7/0275H01B13/00H01B13/14
Inventor 张杰薛天俊高炳祥岳永莹杜富王璐
Owner 白银有色长通电线电缆有限责任公司
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