Wiredrawing line for wiredrawing a metal wire, wire rod or strap

Abstract

A wiredrawing line (1) for wiredrawing at least one metal wire, wire rod or strap, having a plurality of rotary organs (6, 13, 14, 19) acting upon the metal wire, wire rod or strap during the wiredrawing process, a plurality of induction motors (8, 15, 20), each causing the rotation of one or more of the rotary organs (6, 13, 14, 19), a plurality of drives (21-23), each controlling a respective motor (8, 15, 20) and comprising a DC / AC inverter, and a power supply means (16) to supply said drives (21-23) with power in direct current by means of a single direct current voltage bus (24) mounted along the wiredrawing line (1).

Description

technical field [0001] The invention relates to a drawing wire for drawing metal wire, wire rod or strip. Background technique [0002] As is well known, a wire drawing line generally includes a wire drawing machine, an annealing furnace, and a winding machine in the following order. The wire drawing machine is designed to perform constant volume deformation on the wire by drawing it through a series of dies to obtain a The annealing furnace performs heat treatment on the hard-drawn wire delivered through the wire drawing machine to restore at least a portion of the electrical resistance and the ductile characteristics of the metal making up the wire, and the winder winds the annealed wire around a spool. Sometimes an annealing furnace is not available or used to obtain a spool with simply hard drawn filament at the end of the process. [0003] If the drawn wire is a multi-filament wire, it comprises different winders provided with corresponding bobbins or it comprises coll...

AI Technical Summary

Problems solved by technology

[0006] However, the presence of an external box has obvious disadvantages

First, the external box leaves a large impression on the ground, complicating the logic of where to install the brushed wire

Furthermore, the power cables are very long (i.e. varying in meter length), causing power losses and, in the particular case of using AC motors, causing significant electromagnetic problems

Finally, the presence of the external box increases the safety of the entire line because it must be constructed and installed suitable channels or ducts to allow the cables to enter the wire from the outer box, which must be installed separately from the rest of the wire. Build and Install Costs

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