Laser welding connection of plastic pipe and other plastic parts

Abstract

The present invention relates to a laser welding method for establishing connection of plastic pipe (2) with plastic part (3), the method involves sticking together an end (4) of a plastic pipe (2) with an end (5) of a plastic part (3) in an overlapping manner, where the ends respectively exhibit an inner dimension (6) and/or outer dimension (7) in the area of connection of the plastic pipe with the plastic part, largest outer dimension of the ends lying inside the area of connection is larger than lowest inner dimension of the ends lying outside the area of connection, a contact pressure is formed between the ends, thus heat contact each other in the laser welding process is reinforced. According to the invention, the laser welding method is characterized in that installation ends (4) of the plastic pipe (2) and the plastic part (3) is mainly composed of polyamide without core shaft fixation, simultaneously the laser beam for welding is guided around the fixed pipe contact.

Description

technical field [0001] The invention relates to a laser welding method for preparing a connection of a plastic pipe to another plastic part, wherein one end of the plastic pipe is mounted overlappingly on the tubular end of the other plastic part, the end of the plastic pipe and the end of the plastic part being in the area of ​​the connection have inner or outer dimensions respectively, and the largest outer dimension of the inner end in the connection area is larger than the smallest inner dimension of the outer end in this area, thereby forming a contact pressure between the two ends, which strengthens mutual thermal contact during laser welding. Background technique [0002] Connections between plastic pipes and other plastic parts are known, for example, in the automotive industry. In particular fuel lines, which must be connected in a sealed and safe manner to the fittings and / or joints of the plastic pipes used to transport the fuel. Due to the increased ethanol cont...

AI Technical Summary

Problems solved by technology

This method is used to weld straight pipes or tubular bodies to heads or plastic parts, but has the disadvantage that the m

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