WELDING DEVICE - PANASONIC IP MAN CO LTD

Title:

WELDING DEVICE

Document Type and Number:

WIPO Patent Application WO/2021/149570

Kind Code:

A1

Abstract:

A welding device (10), which performs a welding by generating an arc (A) between a tungsten electrode (21) and a base material (30), is provided with: a high frequency voltage application unit (13) which applies a high frequency voltage between the tungsten electrode (21) and the base material (30); a welding output circuit unit (14) which controls a welding current; a current detection unit (15) which detects a welding current that is equal to or larger than a predetermined current threshold value; and a control unit (18) which acquires a delay time from the execution of a start operation to the detection of the welding current by the current detection unit (15) during the start operation for causing the high frequency voltage application unit (13) to start the application of a high frequency voltage, determines whether or not the delay times during a plurality of previous start operations satisfy a predetermined time condition, and executes a predetermined abnormality process in cases where the delay times satisfy the time condition.

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Inventors:

OOSAKI NORIKAZU
IHARA HIDEKI
TAMAGAWA KENTA
HORIE KOTA

Application Number:

PCT/JP2021/000955

Publication Date:

July 29, 2021

Filing Date:

January 14, 2021

Export Citation:

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Assignee:

PANASONIC IP MAN CO LTD (JP)

International Classes:

B23K9/067; B23K9/10; B23K9/167

Domestic Patent References:

WO2017169409A1

2017-10-05

Foreign References:

JP2011133330A	2011-07-07
JP2012197001A	2012-10-18
JP2002203839A	2002-07-19

Other References: