To provide an orientation mechanism which delivers at a certain rotating angle a basically cylindrical container whose flanks are cut into planes.SOLUTION: A orientation mechanism 10 which, during conveyance, aligns the direction of bottles B which are containers with basically cylindrical outer shape and have a shape whose sides are cut off so that two parallel surfaces P are formed along the cylinder axis has an endless belt 111 having a predetermined coefficient of friction for placing and transporting the bottles B, a restriction guide 121 which sets an angle to the conveyance direction and is at a height above the endless belt 111 that hits a plane P from upstream to downstream and is arranged in a position where it interferes with the bottles B during conveyance of the bottles B, and the orientation mechanism 10 is featured as such that during conveyance the bottles B abut the restriction guide 121 and rotate, the plane P delivers the bottles B downstream in the same posture without rotating after abutting the restriction guide 121.SELECTED DRAWING: Figure 2【課題】側面が平面に削がれた円筒基調の容器を一定の回転角度にただして引き渡す配向機構を提供する。【解決手段】 外形が円柱基調の容器であって、円柱軸に沿って平行な二面Pが形成されるように側面がそぎ落とされた形状を有するボトルBの向きを移送する際にそろえる配向機構10であって、ボトルBを載置して移送する所定の摩擦係数を有する無端ベルト111と、移送方向に対して角度をつけ、無端ベルト111上空にて上流から下流にわたり平面Pに当たる高さにあり、ボトルBの移送に伴ってボトルBと干渉する位置に配された規制ガイド121と、を有し、移送に伴いボトルBが規制ガイド121に当接すると共に回転し、平面Pが規制ガイド121に当接した以降は回転せずにその姿勢のままボトルBを下流にて引き渡すことを特徴とする配向機構10。【選択図】図2