PROBLEM TO BE SOLVED: To provide a ridge forming machine that can form a tight ridge, and also provide a ridge forming machine with a durable ridge forming unit.SOLUTION: A ridge forming machine is configured as follows: a ridge forming unit comprises a cylindrical rotor forming a ridge upper surface, and a cone rotating body 31 mounted on one end of the cylindrical rotor and forming a ridge side the surface of the cone rotating body 31 is constituted of a plurality of radial segments 310 mainly on a rotary central axis 315 the segments 310 each have an outer circumferential surface formed so that a distance from the rotary central axis 315 is increased from a rotation direction front toward a rotation direction rear in an arc shape bars 313 are brought into abutment with an inner surface of a rotation direction rear end 311 in parallel to end edges of the segments 310 and an adjacent segment rotation direction front end comes into abutment with the bars 313 to form a stepped part 316, and each segment 310 is connected with each other in a zigzag shape in a side view.COPYRIGHT: (C)2015,JPO&INPIT【課題】硬く締まった畦の形成ができる畦形成機を提供するとともに、耐久性のある畦形成部を有した畦形成機を提供する。【解決手段】畦形成部は畦上面を形成する円筒回転体と円筒回転体の一端側に取付けられ畦側面を形成する円錐回転体31とを具備し、円錐回転体31の表面は回転中心軸315を中心とした放射状の複数枚の分割片310によって構成されていて、分割片310は、外周面が回転中心軸315からの距離が回転方向前方から回転方向後方に向って円弧状に増大するように形成されていて、回転方向後端部311内面に分割片310の端縁に平行に棒材313が当接され、棒材313に隣接する分割片回転方向前端部が当接して段差部316を形成し側面視ジグザグ状に各分割片310相互が連結されている畦形成機による。【選択図】 図5
