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US 11,980,978 B2Granted
System and method to control two wire feed motors
AssigneeIllinois Tool Works Inc.
InventorCraig Steven Knoener
Life of this patent
Estimating the term…
Abstract
A system for controlling multiple wire feed motors for use in a welding-type system including a push motor controlled to operate at a target wire feed speed and a pull motor disposed in a welding torch controlled to apply a target torque to the fed welding wire. Such a system eliminates shaving and bird nesting of welding wire.
Claims20
A welding system comprising:
- a wire feeder comprising a push motor configured to feed a welding wire to a welding torch having a pull motor configured to pull the welding wire;
- a sensor configured to output a feedback signal representative of a current through the pull motor;
- and
- control circuitry configured to, during a welding operation:
- control the pull motor to operate at a target torque based on the feedback signal;
- and
- control the push motor to operate at a target speed.
4 more elements
A welding system comprising:
- a wire feeder comprising a push motor configured to feed a welding wire to a welding torch having a pull motor configured to pull the welding wire;
- a sensor configured to output a feedback signal representative of a current through the pull motor;
- and
- control circuitry configured to:
- receive a start command;
- in response to receiving the start command, start the pull motor at a constant speed;
- after a first delay following receiving the start command, control the pull motor to operate at a target torque based on the feedback signal;
- and
- after a second delay following receiving the start command, start and control the push motor at a target push motor speed.
6 more elements
A method for feeding welding wire, the method comprising:
- controlling, via control circuitry, a push motor to operate at a target speed, wherein the push motor feeds the welding wire to a welding torch having a pull motor that pulls the welding wire;
- providing, via a sensor, a feedback signal representative of a current through the pull motor;
- and
- controlling, via the control circuitry, the pull motor to operate at a target torque based on the feedback signal.
1 more element
Dependencies are inferred from the claim text.