Steel cable for strengthening rubber product

Abstract

In order to obtain a cable wire of rubber product for strengthening of single layer wring with adequate rubber permeability and good fatigue durability, adopting the following cable wire (10), which is of 1 x n (n=3-6) single layer wring, including a common wire (12) without other machining crimple other than screw crimple for rope wring and a screw wire (11) with a small screw-shaped crimple andscrew crimple for rope wring, the screw wire is arranged horizontally after relieving strand, the angle maximum value (alpha 2) of the tangent (t2) of the track projected on the horizontal plane on the projecting plane and the reference line (r2) of screw crimple for rope wring is 1.2- 2.0 times of the cable wire wring angle.

Description

technical field [0001] The present invention relates to a steel wire rope used for reinforcing rubber products such as automobile tires and conveyor belts, and more particularly to a steel wire rope having both sufficient rubber penetration and excellent fatigue resistance. Background technique [0002] As steel wire ropes for reinforcing rubber products such as automobile tires and conveyor belts, closed twisted structures (so-called closed twisted structures) such as single-layer tightly twisted 3 to 6 wires (steel wires) have been often used in the prior art. type) wire rope. A plurality of these steel wire ropes are aligned in parallel and covered with a rubber material to form a composite sheet (シ-ト), and then embedded in a rubber product. The steel wire rope twisted with three steel wires is called a 1×3 structure. In addition, According to the number of wires, it is called 1×4, 1×5, 1×6 structure. [0003] However, in such a closed type steel cord, there are longitu...

AI Technical Summary

Problems solved by technology

[0007] However, a single-layer twisted wire rope made by twisting wires with small helical or wavy wrinkles and straight wires does not always have sufficient rubber penetration and excellent fatigue resistance.

In order to have both sufficient rubber penetration and excellent fatigue resistance, whenever the number of wires or wire diameters of the rope is different, the number of creases and the distance between creases must be adjusted according to both rubber penetration and fatigue resistance. , wrinkle processing height and other settings to evaluate to determine the optimal setting, but the determination is not easy

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