Systems and methods for buffer sensing in controlled short circuit welding system

A technology of buffers and control circuits, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as inability to produce high-quality welds

Active Publication Date: 2021-02-26
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if too much or too little wire is advanced during the welding operation, the weld may be over- or under-fed to produce a high-quality weld

Method used

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  • Systems and methods for buffer sensing in controlled short circuit welding system
  • Systems and methods for buffer sensing in controlled short circuit welding system
  • Systems and methods for buffer sensing in controlled short circuit welding system

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Embodiment Construction

[0025] The present disclosure describes systems and methods for controlling one or more wire feeder motors in response to sensor data during a controlled short circuit welding process. As more fully described with respect to the several figures, the moveable buffer comprising the first portion and the second portion is monitored by sensors to sense changes in the amount of welding wire between the first wire feeder motor and the second wire feeder motor instructions so that wire position and speed can be adjusted according to a control scheme implemented by the control circuit.

[0026] For example, short circuit cycle welding processes operate by alternating between short circuit events and arc events. For example, arcing events can be adjusted to control short circuit clearing to occur. In one example, it is desirable during a MIG welding process that molten droplets from the welding wire enter the weld puddle at relatively low current levels. If the current level is too h...

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Abstract

Disclosed is a welding-type power source (10) that includes a first wire feeder (12) provides a wire (42) to a workpiece (18). A first wire feeder motor (46) of the wire feeder to move the wire from awire storage device to the workpiece. A second wire feeder motor (53) moves the wire to and away from the workpiece and superimposes movement of the wire onto the movement from the first wire feedermotor. A moveable buffer (60) 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 whenthe second wire feeder motor moves the wire away from the workpiece. A sensor (66) 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.

Description

[0001] related application [0002] This international application claims the 15th application titled "SYSTEMS AND METHODS FOR BUFFER SENSING IN A CONTROLLED SHORTCIRCUIT WELDING SYSTEM" filed on May 8, 2018. Priority of US Patent Application No. / 974,121. The entire contents of US Patent Application No. 15 / 974,121 are incorporated herein by reference. Background technique [0003] In welding operations, gas metal arc welding (GMAW) and more specifically metal inert gas (MIG) techniques allow the electrode to form the weld bead. Power is applied to the wire and an electrical circuit is completed through the workpiece to maintain an arc that fuses the wire and workpiece to form the desired weld. [0004] Advanced forms of MIG welding are based on the generation of cyclic pulses that cause a controlled short circuit between the wire electrode and an advancing weld puddle consisting of the workpiece and molten metal of the wire electrode. Various pulsing schemes may be implem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/12B23K9/133B23K9/10
CPCB23K9/1006B23K9/124B23K9/133B23K9/1336B23K9/091B23K9/1043B23K9/125
Inventor 理查德·马丁·哈奇森托德·杰拉尔德·巴茨勒
Owner ILLINOIS TOOL WORKS INC
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