PROBLEM TO BE SOLVED: To properly correct a posture of conveying shellfish without being affected by the identity of the shellfish and make the transfer of the shellfish to a turntable quickly and smoothly, and thereby improve the positioning accuracy of the transferred shellfish to make perforation precisely and improve the efficiency of the perforation.SOLUTION: Multiple correcting jigs installed to a shellfish conveyance unit 20 each comprise a mounting part 25a mounted to a rotatable endless body, an inclined part 25b provided by inclining a correction surface 25d in an obtuse angle, and a standing part 25c continued to the mounting part 25a and continued to the inclined part 25b. A height Hof the standing part 25c is less than a height Hof an ear-shaped protrusion 3 of transported shellfish. The standing part 25c is provided, and therefore the correction of a posture is possible without being affected by a shape of a side edge 3e of the ear-shaped protrusion. The correction plate tries to hold an aligned state of the shellfish 1 as the standing part 25c of the correction plate rises from the top of a conveyor 21, and thereby the correction posture can be stabilized.SELECTED DRAWING: Figure 5【課題】貝の素性に影響を受けることなく、搬送中の貝の姿勢を適正に矯正し、ターンテーブル部への貝の乗せ換えを迅速円滑にすること。乗せ換えられた貝の位置決め精度の向上を図り、穿孔を正確にかつ穿孔効率を良好にすること。【解決手段】貝搬送部２０に設置される複数個の矯正治具が回転可能の無端状体に取り付けられる取付部２５ａと、矯正面２５ｄを鈍角に傾斜して設けられる傾斜部２５ｂと、取付部２５ａに連続するとともに傾斜部２５ｂに連続する起立部２５ｃとからなり、起立部２５ｃの高さＨ1が搬送される貝の耳状突起３の高さＨ2未満である。起立部２５ｃがあるため、耳状突起の側縁３ｅの形状に影響されず、姿勢の矯正が可能である。矯正プレートの起立部２５ｃがコンベヤ２１上から高くなるほど、矯正プレートは貝１の整列した状態を保持しようとするので、矯正姿勢の安定化を図ることができる。【選択図】図５
