| 摘要 |
In the present invention, before a load (nozzle load) produced during relative movement of a suction tube and trunk cylinder of a suction nozzle (62) is measured by a load cell (240), a pressing bracket (242) is brought into contact with a distal end of the suction tube, and in this state, the suction nozzle and the pressing bracket are brought closer to each other with a set load. If the proximity of the suction nozzle and the pressing bracket causes the suction tube and the trunk cylinder to relatively move by a set amount, the nozzle load is measured using the load cell, with respect to the suction nozzle. Due to this configuration, it becomes possible to measure the nozzle load only for a suction nozzle for which relative movement between the suction tube and the trunk cylinder has been confirmed, and it becomes possible to appropriately measure the nozzle load without damage to a load sensor. Moreover, in some instances, an application of a set load could cause the suction tube and trunk cylinder that have had substantially no relative movement to become relatively movable and be repaired. |
