Production method of small-bending-radius cable

Abstract

The invention discloses a production method of a small-bending-radius cable, which comprises the following steps: S1, a plurality of discrete conductors pass through a branching polymerization mechanism for polymerization to form a to-be-stranded unit; S2, the to-be-stranded unit is fed into a stranding mechanism for stranding to obtain a stranded unit; S3, the stranded unit passes through a firstextruder of a first plastic extruding machine under the traction of a first traction mechanism, and the first extruder extrudes an insulating material and then combines the insulating material on thesurface of the stranded unit, so that an insulating layer is formed on the surface of the stranded unit and a single insulating wire core is obtained; S4, a plurality of insulating wire cores are twisted by using a cabling machine to obtain a cable core; S5, the cable core obtained in S4 is braided through a braiding machine to form a shielding layer on the surface of the cable core; and S6, thecable core braided with the shielding layer passes through a second extruder of a second plastic extruding machine under the traction of a second traction mechanism, a sheath is formed on the surfaceof the shielding layer, and a small-bending-radius cable is obtained. The method has the advantage that trench jumping of a conductor can be avoided.

Description

technical field [0001] The invention relates to the technical field of cable manufacturing, in particular to a production method of a cable with a small bending radius. Background technique [0002] At present, cables play an indispensable role in the power system, and there are many cable constructions, so they are often used in spaces with relatively narrow bending radii, so the fifth and sixth conductors are used. The fifth type of conductor is a soft conductor; the sixth type of conductor is a softer conductor than the fifth type. [0003] Relative to conductors with small cross-sections, such as 0.2mm 2 , 0.35mm 2 , 0.5mm 2 , 0.75mm 2 In order to meet the flexibility of the cable, the fifth and sixth types of conductor bundles are often used to produce small bending radius cables (usually the bending radius of the small bending cable is 5 times its diameter), and the small bending radius cable consists of several insulated cores It is composed of a braided shieldin...

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Problems solved by technology

[0007] However, with the long-term use of the deflection-free head and the guide wheel, both of them will be worn to varying degrees, which will cause the center of the wire and the extruder without deflection-free extrusion when the wire enters the deflection-free extrusion head. The center of the machine head is not on the same straight line, resulting in that after the insulation is extruded, the center of the insulation layer and the wire cannot be concentric

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