A wire forming device

Abstract

A wire forming device (300) comprises a first and second deforming wheel (302,304) turnable on shafts (322, 324) in a holder (310), a synchronizing coupling (410) for coupling the first and second wheel such that the first and second deforming wheels are rotatable with synchronized circumferential speed at the gap between the first and second wheel. A composite wire forming device comprises two or more wire forming devices. A sawing wire can be formed by the composite wire forming device or the wire forming device. The wire forming device can be used to crimp wires, more particularly steel wires for use, in steel cord or as a sawing wire or as a brush wire. In this way the phase difference between the deforming wheels can be adjusted at will.

Description

technical field [0001] The invention relates to a wire shaping device for inducing impressions or bends in a wire, more particularly in a steel wire rope or on a steel wire used as saw wire or as brush wire. Background technique [0002] In many wire applications, it is beneficial to shape the wire in a specific shape. Mainly this is in the form of waves in a single plane, possibly combined with other deformations such as turns or bends or a second curl in a plane different from the plane of the first curl. [0003] The reasons why curl is introduced can be varied. For example in the field of reinforced steel cords for rubber products: [0004] • The monofilaments are crimped to influence the elongation behavior of the monofilaments in the rope. A coiled wire has a higher elongation at break and a lower modulus than a straight wire. Furthermore, these properties can be tuned quite well by tuning the magnitude and wavelength of the curl. [0005] • The monofilaments in t...

AI Technical Summary

Problems solved by technology

[0018] The inventors have observed that with known crimping devices a particular problem can occur: because the forming wheels rotate independently of each other and are separated by a gap, there is an angular "play" between the two forming wheels

The changing phase difference may also cause the wire to be partially caught between the teeth of the deformation wheel, resulting in damage to the wire surface

For wire ropes, a damaged wire surface is known to result in reduced fatigue life

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