To stabilize an adhesion position to square laver of a rice mass by supplying the square laver to a deviated position, and sliding the square laver to a normal position by a slide mechanism.SOLUTION: A laver positioning device includes: a rice mass transportation member 9 for transporting a plurality of rice masses at a fixed interval； a laver supply part 16 for supplying square laver N to a transportation route of the rice masses of the rice mass transportation member 9； and a laver winding part 11 for winding the square laver N around the rice masses at a downstream side of the laver supply part 16. A laver outlet of the laver supply part is positioned so that a supply position of the square laver N supplied onto the rice mass transportation member 9 becomes a position E2 deviated in the horizontal direction to a direction of travel of the rice mass. There is provided a slide mechanism 18 engaged with an end part N' at a short side in the deviation direction of the supplied square laver N, and sliding the square laver N in an opposite direction to the deviation direction so that the square laver N comes to a normal position E1 without deviation.SELECTED DRAWING: Figure 3【課題】 方形海苔をずれた位置に供給し、スライド機構により方形海苔を正規位置までスライドさせ、飯塊の方形海苔に対する貼着位置を安定させる。【解決手段】 複数の飯塊を一定間隔で搬送する飯塊搬送部材９と、飯塊搬送部材９の飯塊の搬送経路に方形海苔Ｎを供給する海苔供給部１６と、海苔供給部１６の下流側で方形海苔を飯塊に巻き付ける海苔巻付部１１を有し、飯塊搬送部材９上に供給される方形海苔Ｎの供給位置が、飯塊の進行方向に対して水平方向にずれた位置Ｅ２となるように海苔供給部の海苔出口が位置付けられ、供給された方形海苔Ｎのずれた方向の短辺側の端部Ｎ’に係合し、方形海苔Ｎがずれのない正規位置Ｅ１に来るように、方形海苔Ｎをずれの方向とは反対方向にスライドさせるためのスライド機構１８を設けた。【選択図】 図３
