| 摘要 |
PURPOSE:To prevent spatter from sticking and growing on the inside wall of a dust-collecting pipe into which the spatter generated by a laser beam machine is guided. CONSTITUTION:The dust-collecting pipe 23 with a double construction constituted of inner/outer pipes 35, 37 is provided in the lower part of the opening 31 of a cutting plate 33 that is irradiated with a laser beam; an air gun 39 is provided facing upward between the inner/outer pipes 35, 37; a ball collecting means 43 for collecting many balls 49 is provided at the lower end of the air gun 39; and an air nozzle 45 with which air is supplied to the air gun 39 is provided at the lower end part of the ball collecting means 43. |
