Detecting element for a welding device
First Claim
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.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention describes a welding apparatus (1), which has a current source (2) for supplying electrical power to at least one electrode at a welding torch (10) and a control system (4) co-operating with the current source (2), linked to an input device (22) for entering settings for different welding parameters, several sensing means being provided for detecting various actual values of a welding process. At least one measuring device or system for sensing mechanical motion, in particular a welding wire displacement and/or a welding torch displacement or similar, is provided, which detects a surface structure of an object.
-
Citations
33 Claims
- 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.
- 19. Method of controlling or regulating a welding apparatus, in which various actual values of a welding process are detected by various sensing means and a welding wire displacement is sensed by a measuring system in the welding torch, in particular upstream of a contact pipe or by means of a measuring system disposed between a drive system for the welding wire feed and a linking element for a supply line or a hose pack, and the detected actual values and the detected welding wire displacement are used to control or regulate the welding process, comprising the steps of detecting the welding wire displacement in such a way that a surface structure of the welding wire is detected and stored by the measuring system and after a predefined measuring cycle time has elapsed, again detecting the surface structure of the welding wire, after which the detected surface structures are compared by an evaluation logic of the measuring system and a corresponding shift in the surface structures is recognized and detected, whereupon a travelled distance of the welding wire or a changed position or a speed of the welding wire is calculated.
Specification