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Method for preventing spiral shielding cable from integrally breaking

A shielded cable, helical technology, applied in the field of cable sheath processing equipment, can solve problems such as cable breakage and loss, and achieve the effect of improving extrusion efficiency

Inactive Publication Date: 2013-04-03
TIANJIN DAILY PROSPERITY SCI & TECH GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the sheath layer does not fill the helical groove of the outer shielding layer with the sheath material when the sheath is extruded, the helical groove of the outer shield of the cable cannot be supported by the sheath material, so the cable is installed If there is a slight force bending during the laying process, the entire cable may be broken along the helix of the outer shield, resulting in serious losses

Method used

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  • Method for preventing spiral shielding cable from integrally breaking
  • Method for preventing spiral shielding cable from integrally breaking
  • Method for preventing spiral shielding cable from integrally breaking

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Embodiment Construction

[0020] A preferred embodiment of the present invention will be briefly described below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 4 Shown:

[0022] A method of preventing the overall breakage of a helical shielded cable,

[0023] The conductor core discharged from the pay-off rack 1 is heated before passing through the extruder 2;

[0024] Extruder 2 extrudes the cable sheath by extruding or semi-extruding tube extrusion technology;

[0025] The equipment used for processing the spiral shielded cable sheath according to the above method includes a pay-off rack 1, an incoming wire heating device 6, an extruder 2, a cooling water tank 3, a tractor 4 and a wire take-up rack 5 arranged in series, The extruder 2 includes a frame, an extrusion screw in the frame, and an extrusion die at the head part. The extrusion screw of the extruder 2 is distributed with threads with equal distances and different depths, and the pitch is 150°. mm;

[0026] Wh...

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Abstract

The invention provides a method for preventing a spiral shielding cable from integrally breaking. A conductor wire cable paid off by a pay-off rack is heated before passing through an extruder, and the extruder extrudes a cable sheath by extrusion or semi-extrusion tube extrusion technology. The method has the advantages that extrusion efficiency is greatly improved, extrusion capacity reaches 200%, high back pressure can be generated when sheath materials are extruded to a plug die orifice by the extruder owing to improvement of the extrusion capacity, a spiral shielding groove outside the cable is filled with the sheath materials, the bent cable is supported, and the problem of breaking of the cable is solved.

Description

technical field [0001] The invention relates to the technical field of cable sheath processing equipment, in particular to a method for preventing the overall breaking of a spiral shielded cable. Background technique [0002] SDY type spiral shielded semi-air insulated low-attenuation coaxial cable is an important component of modern microwave communication and full-channel color TV transmission system. The structure of this cable includes inner conductor, insulation, outer shield and sheath from inside to outside. Wherein the outer shielding is spiral. The production of the above-mentioned cables is highly technical, and the manufacturing process is complicated. The outer diameter of the cables is thick, which can reach more than 100 millimeters, and the cost is expensive. [0003] In the prior art, the production line of the spiral shielded cable includes a pay-off stand, an extruder, a cooling water tank, a tractor and a take-up stand arranged in series in sequence. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/24
Inventor 王凯
Owner TIANJIN DAILY PROSPERITY SCI & TECH GROUP
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