PROBLEM TO BE SOLVED: To obtain a Sushi roll whose cross-sectional shape is made further square.SOLUTION: Provided is a Sushi roll production device comprising: a molding plate 8 in which a plurality of molding plates 8a are mutually bendably coupled, and to be mounted with sheet-shaped rice; a plate mounting part 7 mounted with the molding plate 8; a push-up roller unit 16 cylindrically bending the molding plate 8 mounted to the plate mounting part 7 so as to be extended; and a firs planar body 15-1 provided along the width direction of the molding plate 8, increasing when the molding plate 8 cylindrically bends and displaces by a prescribed amount to the inside of the radial direction of the molding plate 8.SELECTED DRAWING: Figure 10COPYRIGHT: (C)2018,JPO&INPIT【課題】断面形状がより一層角形になった巻き寿司を得る。【解決手段】複数の成形板8aが相互に屈曲自在に結合され、シート状の米飯が載置される成形プレート8と、成形プレート8が装着されるプレート装着部7と、プレート装着部7に展開して装着された成形プレート8を筒状に屈曲させる突上ローラユニット16と、成形プレート8の幅方向に沿って設けられ、成形プレート8が筒状に屈曲したならば上昇して成形プレート8の径方向内側へと所定量だけ変位する第1の板状体15-1とを有する寿司製造装置である。【選択図】図10