| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently introduce molten solder even into a through-hole, while securing a jet width.SOLUTION: A jet nozzle 100 comprises a nozzle body part 30, and the nozzle body part 30 comprises an inflow port 601 and a discharge port 602 in a casing of a predetermined shape, and the molten solder 7 flowed in from the inflow port 601 is jetted to a printed circuit board 1 from the discharge port 602. A coarse flow part 10 is provided on one side in the longitudinal direction of the nozzle body part 30, and a coarse wave flow is formed of a part of the molten solder 7 flowed in from the inflow part 601. A flat flow part 20 is provided in the longitudinal direction on the side opposed to the coarse flow part 10, and a smooth flow is formed of the molten solder 7 jetted from the discharge port 602. A guide part 24 is provided in a predetermined position of the flat flow part 20, and guides the smooth flow above the coarse flow part 10. |
