| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a metal piece detection device capable of reducing a work for searching a metal piece by improving detection precision of the metal piece, enlarging an S/N ratio, and preventing erroneous operation even in a place where a noise is generated, and improving the operation rate of a conveyer. SOLUTION: In this metal piece detection device for detecting the metal piece contaminated in an article to be conveyed N by a detection coil Ka formed by winding a lead wire into a ring shape so as to enclose a passing conveyer belt B, when conveying the article to be conveyed N by the conveyer belt B having a trough T having both side parts bent upward, the lower part of the detection coil Ka is formed to have a shape along the trough T on the bottom face of the conveyer belt B.</p> |
