Control method for welding equipment

The control method for welding apparatuses uses reverse and forward feeding operations to detect conduit cable abnormalities through current values and time intervals, addressing the cost issue of separate sensors and ensuring stable welding operations.

JP7891649B2Active Publication Date: 2026-07-17PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Filing Date
2022-06-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Conventional methods for detecting poor wire feeding in welding apparatuses require separate optical sensors on the extrusion and drawing sides, increasing the cost of the apparatus.

Method used

A control method for a welding apparatus that includes reverse and forward feeding operations to detect current values and time intervals, allowing determination of conduit cable abnormalities without additional sensors.

Benefits of technology

Enables detection of conduit cable abnormalities with a simple configuration, reducing costs and maintaining stable arc welding by identifying issues such as bending, breaking, or clogging within the conduit cable.

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Abstract

According to the present invention, reverse feed operations of a welding wire 21 are performed, following which forward feed operations are performed. After starting forward feed operations, a first current value Ia' is detected at a first point-in-time a'. A first time Tab' from the first point-in-time a' to a second point-in-time b' is detected. After the second point-in-time b' elapses, a second current value Ic' is detected at a third point-in-time c'. At least one of the first current value Ia', the second current value Ic', and the first time Tab' is compared with a first set current value Ia, a second set current value Ic, and a first set time Tab, corresponding thereto, which are set in advance, and abnormality of a conduit cable 16 is determined.
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