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Power Supply Device For Arc Welding, Arc Welding System, And Control Method Of Power Supply Device For Arc Welding

A power supply device and arc welding technology, which is applied to arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problem that the arc welding system is not enough to suppress flying objects, and achieve the effect of suppressing the generation of flying objects

Inactive Publication Date: 2014-06-25
YASKAWA DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this reason, the arc welding system disclosed in Japanese Laid-Open Patent Publication No. 2007-245239 is insufficient as a system for suppressing the generation of spatter

Method used

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  • Power Supply Device For Arc Welding, Arc Welding System, And Control Method Of Power Supply Device For Arc Welding
  • Power Supply Device For Arc Welding, Arc Welding System, And Control Method Of Power Supply Device For Arc Welding
  • Power Supply Device For Arc Welding, Arc Welding System, And Control Method Of Power Supply Device For Arc Welding

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Embodiment Construction

[0018] Hereinafter, a power supply device for arc welding, an arc welding system, and a control method of the power supply device for arc welding according to embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, the embodiments disclosed below are not intended to limit the present invention. First, refer to figure 1 The arc welding system according to the embodiment will be briefly described.

[0019] figure 1 is a diagram explaining the arc welding system according to the embodiment. Here, a case where the constrained portion of the droplet is detected at time β after noise is detected at time α will be described.

[0020] figure 1 The upper part of , schematically shows the variation of the welding current I with the lapse of time t in the arc welding system according to the embodiment. figure 1 The lower part of , schematically shows the appearance of the droplet including the end of the consumable ...

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Abstract

The invention provides a power supply device for arc welding, arc welding system, and control method of power syupply device for arc welding. The power supply device for arc welding according to an embodiment includes a constrained short-circuit opening unit and a reexecuting unit. The constrained short-circuit opening unit reduces, when a change amount of a welding voltage becomes not less than a predetermined threshold while raising a welding current between a consumable electrode and a workpiece, the welding current for a predetermined time interval to execute a constrained short-circuit opening process for opening the short-circuit state. The reexecuting unit makes the constrained short-circuit opening unit reexecute the constrained short-circuit opening process after the constrained short-circuit opening process is executed.

Description

technical field [0001] The invention relates to a power supply device for arc welding, an arc welding system and a control method for the power supply device for arc welding. Background technique [0002] Conventional arc welding systems are known which generate an arc between a consumable electrode and a coil (workpiece) to perform welding on the coil. Just before the short-circuit opening time determined based on the variation amount of the welding voltage, the arc welding system temporarily reduces the welding current rising at a predetermined rate and moderately thermally cuts the confined portion of the droplet formed at the front end of the consumable electrode. [0003] In an arc welding system that simultaneously welds one workpiece by using a power supply unit for arc welding and a welding robot, it is known that a power supply unit for arc welding is damaged due to switching operations of other power supply units for arc welding. Noise is superimposed on the weldi...

Claims

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Application Information

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IPC IPC(8): B23K9/06B23K9/095
CPCB23K9/173B23K9/1012B23K9/1043B23K9/091B23K9/092B23K9/095
Inventor 村上真史平山卓秀
Owner YASKAWA DENKI KK