| 主权项 |
1. A welding inspection device comprising:
an inspection unit that inspects a welding state of a press molded article formed by welding a first metal member and a second metal member, by using sound waves generated from the press molded article; an introduction unit provided on an upstream side in a conveyance direction of the press molded article with respect to the inspection unit to introduce the press molded article toward the inspection unit; and a soiling unit provided on a downstream side in the conveyance direction with respect to the inspection unit to sort the press molded article fed out from the inspection unit according to the welding state of the press molded article inspected by the inspection unit, wherein the inspection unit includes a striking device having a striking member that applies an impulsive force to the press molded article, a drive mechanism that applies a drive force to the striking member so that the striking member applies the impulsive force to the press molded article, and an urging member that urges the striking member in a direction opposite to an application direction of the drive force by the drive mechanism, a microphone to which sound waves generated from the press molded article due to the impulsive force applied from the striking member is input, and a detection device that detects the welding state of the press molded article according to waveform characteristics of the sound waves input to the microphone, and the striking member applies the impulsive force to the press molded article in a state in which the drive force by the drive mechanism is cut off and the striking member is urged by the urging member in the direction opposite to the application direction, and after application of the impulsive force to the press molded article, the striking member is forcibly pulled hack in the direction opposite to the application direction by the urging member. |
