Patent ID: 9663321
Date: 2017-05-30
CPC Classifications: B65H,H01F

Claim:
1. A system for feeding a metal wire unwound from a corresponding coil to a machine by means of a wire feeder, the wire being fed at a desired tension, comprising: a tension sensor to detect the tension of the wire, the feeder 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 suitable to supply the wire to the machine, a control unit to control the feeding of the wire at a predefined tension, said control unit, being provided to act on said rotary member to adjust the tension of the wire to maintain the tension constant at least within a pre-set and/programmable reference value, a quantity detector to detect quantity of the wire fed to the machine and connected to said control unit, said quantity detector for providing to the control unit data related to the fed quantity of wire, the control unit being suitable to detect the aforementioned quantity of wire on the basis of the data, wherein said control unit intervenes by adjusting the pre-set or programmed reference tension value to maintain the quantity of wire fed at a pre-set, self-learned and/or programmable reference value.