System and method for feeding metal wires at constant tension

摘要

A system for supplying metal wire to a machine by a wire supply device. The wire having a desired tension detected by a tension sensor. The supply device has at least one rotary member driven by an actuator thereof on which the metal wire is wound for a fraction of rotation or several rotations and adapted to supply the wire to the machine with predefined tension under the action of a control unit. The system has a detector, for detecting at least one wire physical characteristic, downstream of the supply device and connected to the control unit to provide to the latter the data regarding each detected physical characteristic. The control unit intervening on the rotary member for adjusting the wire tension for maintaining, at least approximately around a reference value, the characteristic of the wire controlled. The latter is at least one dimensional and/or electrical characteristic.

主权项

1. A system for supplying a metal wire unwound from a corresponding coil to a machine, the system comprising:
a tension sensor, a control unit, a wire supply device for supplying the wire with a desired predefined tension detected by the tension sensor, the supply device having at least one rotary member driven by an actuator thereof on which the metal wire is wound, for a fraction of rotation or several rotations and adapted to supply the wire to the machine with the predefined tension under the action of the control unit, detector means, for detecting at least one physical characteristic of the wire, arranged downstream of the supply device and connected to said control unit and adapted to provide to the control unit the data regarding each detected physical characteristic, said control unit intervening on said rotary member with the aim of adjusting the tension of the wire should said data differ from a preset and/or programmable reference value, said tension being adjusted to increase or decrease and subsequently maintained constant with the aim of maintaining, at least approximately around said reference value, the characteristic of the wire controlled, wherein the controlled physical characteristic is at least one dimensional characteristic of the wire and/or electrical characteristic of the wire.