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Detecting element for a welding device

  • US 7,015,419 B2
  • Filed: 10/11/2001
  • Issued: 03/21/2006
  • Est. Priority Date: 11/02/2000
  • Status: Expired due to Fees
First Claim
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1. A welding apparatus, having a current source for supplying electrical power to at least one electrode at a welding torch and a control system co-operating with the current source, linked to an input device for entering settings for different welding parameters, several sensing means being provided for detecting various actual values of a welding process, a measuring system disposed in the welding torch upstream of a contact pipe between a drive system for the welding wire feed and a linking element (30) for a supply line (12) or a hose pack, wherein the measuring system consists of a light source, in particular a controlled light source and an optical receiver, which acts on a sensor, and the measuring system is furthermore programmed to detect the surface of the welding wire again after a pre-set measuring cycle time has elapsed and an evaluation logic compares the last detected pattern with the digitally stored pattern and the evaluation logic is programmed to detect a shift in the pattern and calculate a distance of travel or a changed position or the rate of the shift in the pattern.

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