Method for the production of a weld seam extending itself in line-forming manner along a guidance line with an extension line, comprises guiding energy beam before the end point along the extension line

摘要

The method for the production of a weld seam (3) extending itself in line-forming manner along a guidance line (9) with an extension line up to an end point (15) in a joint area by an energy beam (5), comprises guiding the energy beam before the end point along the extension line and guiding the energy beam in an angle to the extension line up to end point, and reducing an effective welding power of the energy beam after the guidance of the energy beam deviating from the extension line and/or after the guidance through the end point. The method for the production of a weld seam (3) extending itself in line-forming manner along a guidance line (9) with an extension line up to an end point (15) in a joint area by an energy beam (5), comprises guiding the energy beam before the end point along the extension line and guiding the energy beam in an angle to the extension line up to end point, reducing an effective welding power of the energy beam after the guidance of the energy beam deviating from the extension line and/or after the guidance through the end point, varying a speed of the energy beam after passing through a branch point (25), varying the effective welding power of the energy beam after guiding the branch point, varying the power of the energy beam after passing through the branch point, reducing the power of the energy beam after passing through the branch point and increasing the welding power, pulsing the energy beam for reducing the effective welding power, superimposing an oscillation during the guidance for reducing the effective welding power, reducing the speed of the energy beam after guiding through the end point up to a value of or near to zero, reducing the speed of the energy beam after guiding through the branch point up to a value of or near to zero and reducing the speed of the energy beam during guiding the closed web to the value of or near to zero. The energy beam is guided on a closed web or parts of web before reaching the end point from the extension line through the end point and back to the extension line. The closed web is guided in a circle or ellipse or in drop-shaped manner. The energy beam deviating from the extension line is guided before guiding though the end point. The energy beam is guided back in the direction of the extension line after guiding through the end point. The energy beam has a laser beam focusing on a focus. The energy beam is guided during the guidance deviating from the extension line on an opened or closed spiral web. An independent claim is included for a welding device for the production of a weld seam extending itself in line-forming manner along a guidance line with an extension line up to an end point in a joint area by an energy beam.