Method and device for laser soldering an electric circuit of a heating portion of an electronic cigarette

A method for laser soldering an electric circuit of a heating portion of an electronic cigarette, the soldering method comprising the following steps:

• a) feeding a heating portion of an electronic cigarette along a feed path at least as far as a soldering position, where the heating portion faces a laser soldering head at an emitting area where a laser beam is emitted,
• b) making a first laser solder at a first point of the electric circuit by striking the first point with the laser beam to produce a first solder connection between a first terminal and a coil of the electric circuit,
• c) making a second laser solder at a second point of the electric circuit by striking the second point with the laser beam to produce a second solder connection between a second terminal and the coil of the electric circuit, the second connection being spaced from the first solder connection,
• wherein
• during the first and second laser soldering steps, the laser beam perpendicularly strikes the first terminal and the second terminal which are respectively interposed between the laser beam and the coil.

A laser soldering device for laser soldering an electric circuit of a heating portion of an electronic cigarette, the soldering device comprising:

• a laser soldering head having an emitting area where a laser beam is emitted,
• a feeding device configured to feed a heating portion of an electronic cigarette along a feed path at least as far as a soldering position, where the heating portion faces the laser soldering head at the emitting area,
• the laser soldering device being adapted to make a first laser solder at a first point of the electric circuit by striking the first point with the laser beam to produce a first solder connection between a first terminal and a coil of the electric circuit and to make second laser solder at a second point of the electric circuit by striking the second point with the laser beam to produce a second solder connection between a second terminal and the coil of the electric circuit, the second connection being spaced from the first solder connection,
• wherein the feeding device comprises a feeding drum adapted to receive and retain the heating portions at a radially outer surface of it, the feeding drum
• wherein it is adapted to retain the heating portions with the terminals directed outwards, the coil being interposed between the terminals and the centre of the feeding drum.