A welding wire feeding device includes a base, a fixing post, a pressing member, a motor, and a conveying mechanism. The pressing member is pivotally connected with a driven wheel. A tension spring is provided between the fixing post and the pressing member. A shaft portion of the motor is pivotally connected with a driving wheel. The conveying mechanism is coupled to the base and has an air hole. The base is formed with a first passage and a second passage connected with a gas cylinder. The length of the conveying tube of the conveying mechanism can be adjusted by pressing. A wire is sandwiched between the driving wheel and the driven wheel through the tension spring. The motor drives the driving wheel to rotate the driven wheel so as to continuously convey the wire; meanwhile, the inert gas can be sent out through the second passage and the conveying mechanism to prevent a workpiece from being oxidized.

Methods and apparatus to control advancement of a welding electrode wire for arc ignition are disclosed. An example electrode wire feeder includes a wire feed motor to advance electrode wire to a welding torch, a temperature monitor to determine a temperature of the electrode wire using at least one of a temperature measurement or a thermal model, and a motor controller to control a run-in wire speed based on a temperature of the electrode wire.

A welding system and a method of control. The welding system may include a weld gun that may have an induction coil and a guide sleeve. The induction coil may heat a welding electrode in the weld gun. The guide sleeve may inhibit the welding electrode from engaging the induction coil.

A welding wire feeder having a multiple motor drive standard is provided. The welding wire feeder may be coupled to one of a plurality of electric motor assemblies, and a user may select the electric motor assembly to be used from a menu of electric motor assemblies on a user interface or may enter customized configuration parameters for the electric motor assembly on the user interface. The control circuitry of the welding wire feeder may then be properly configured backed upon which electric motor assembly is selected or based upon the customized configuration parameters entered.

A welding or additive manufacturing wire drive system includes a first spindle for a first welding wire spool, a second spindle for a second welding wire spool, a first drive roll, and a second drive roll. One or both of the drive rolls has a circumferential groove. A first welding wire and a second welding wire are located between the first drive roll and the second drive roll in the circumferential groove. The first welding wire contacts the second welding wire between the first drive roll and the second drive roll. The first welding wire further contacts a first sidewall portion of the circumferential groove. The second welding wire further contacts a second sidewall portion of the circumferential groove. Both of the first welding wire and the second welding wire are radially offset from a central portion of the circumferential groove.

A gas tungsten arc welding torch includes a handle and a nozzle located distal of the handle and having a central bore. First and second tungsten electrodes are located partially within the central bore of the nozzle. The torch includes at least one filler wire channel that terminates radially inward of the first tungsten electrode and the second tungsten electrode. The torch includes a torch trigger. Operation of the torch trigger controls delivery of a first filler wire and a second filler wire through the at least one filler wire channel. The torch includes a wire feed speed control. Operation of the wire feed speed control adjusts a wire feed speed of both of the first filler wire and the second filler wire.

A device for feeding a welding wire to a welding device is disclosed, having a carriage guide, having a carriage that is supported on a carriage guide so that it is able to move along a carriage axis, particularly in a linear fashion, having an advancing drive, which has an advancing device that is provided on the carriage and driven to induce an advancing motion of the welding wire, and having a carriage drive, which includes a drive unit, an eccentric that is driven by the drive unit, and an eccentric rod that is eccentrically mounted on the eccentric and is mechanically coupled to the carriage to induce a reciprocating motion to the carriage, said carriage drive having means for adjusting the stroke of the reciprocating motion of the carriage.

Disclosed is a welding-type power source that includes a first wire feeder provides a wire to a workpiece. A first wire feeder motor of the wire feeder to move the wire from a wire storage device to the workpiece. A second wire feeder motor moves the wire to and away from the workpiece and superimposes movement of the wire onto the movement from the first wire feeder motor. A moveable buffer located between the first and second wire feeder motors, and configured to accommodate a change in length of the wire between the first and second wire feeder motors when the second wire feeder motor moves the wire away from the workpiece. A sensor senses movement or displacement of the moveable buffer, wherein a speed or direction of the first or second wire feeder motors is adjusted based on data from the sensor.

A handheld welding torch for electric-arc welding with a melting welding wire has a wire feed unit for conveying the welding wire along a conveying axis arranged within a torch housing with a handle region, the wire feed unit including a drive unit with a rotation axis arranged vertically with respect to the conveying axis of the welding wire, a drive roller with a rotation axis and a counter roller with a rotation axis, and having a torch push-button. The wire feed unit has a gear stage and the rotation axis of the drive unit is arranged aligning with the conveying axis of the welding wire.

A method providing a manual welding apparatus configured to supply a welding wire to a welding gun. The welding gun has a trigger and an opening where the welding wire extends when the trigger is activated. The method also has a computer with a user interface that includes an automatic wire retract program. The program monitors the welding gun and determines when the trigger is disabled. The program indicates when a first condition is satisfied and retracts the welding wire so the welding wire does not extend from the opening of the welding gun.