POSITIVE FEEDER DEVICE FOR FEEDING METAL WIRES AT CONSTANT TENSION

摘要

A metal wire feeder device including a body presenting a wire braking member, one or more pulleys driven by respective motors about which the wire is wound, the wire before reaching a processing machine passing through a compensator member and a tension sensor, an electronic control unit able to continuously measure the tension value and make it uniform at a predetermined value by acting on a first regulator loop operating on the motors and a second regulator loop operating on the compensator member. The electronic control unit operates automatically in making the tension uniform at the predetermined value, on the basis of the fed wire quantity or of the wire feed velocity.

主权项

1. A feeder device for receiving metal wires unwinding from a corresponding spool and feeding the received metal wires to a processing machine at a desired tension, comprising:
a body presenting a wire braking member, a tension sensor associated with said body for measuring tension of the wire being fed to the processing machine, at least one rotary member driven by its own actuator being associated with said body, and about which the metal wire winds for a fraction of a turn or for several turns, to feed the wire to the processing machine at tension which is a function of the drive torque generated by said actuator rotating the rotary member, said tension being regulated or increased or decreased and maintained constant at least in the region of a predetermined and/or programmable reference value, control means for the movement of the actuator being provided connected to the tension sensor, said control means being arranged to regulate the torque generated by said actuator on said rotary member on the basis of the tension measured by said sensor, said tension being able to be greater or less than that under which the wire unwinds from the corresponding spool, wherein said control unit cooperates with a memory containing tension data related to a wire feed value measured independently by said feeder device, said feed value being at least one from among the wire quantity fed by the device and the wire feed velocity, the wire tension being modified on the basis of an operative stage of the machine by acting on said member and on the corresponding actuator.