PROBLEM TO BE SOLVED: To provide a pruning machine in which the deterioration of the cutting ability of cutting blades is prevented.SOLUTION: In a pruning machine for cutting plants by reciprocating motion, while maintaining the state of slide contacting of a pair of upper and lower blades where a plurality of cutting blades 85 and 95 are formed successively in the side of an elongated part, the tip parts 85a and 95a of the cutting blades 85 and 95 are formed to have scoop faces 85b and 95b becoming narrow in two stages from the handling side towards the blade end side so that a component of a force in the pressing direction between the cutting blades 85 and 95 which is generated by cut resistance at the time of cutting becomes smaller at the blade end side as compared to that at the handling side.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2017,JPO&INPIT【課題】切断刃の切断性能の低下を防止した刈り込み機を提供する。【解決手段】長尺部の側方に複数の切断刃85,95が列設された上下一対のブレードが摺接状態を保ちながら往復運動して草木の切断を行う刈込み機において、切断刃85,95の刃先部85a,95aは、切断時の切断抵抗により発生する切断刃85,95同士を押し付ける方向の分力が、刃元側に対して刃末側が小さくなるように、刃元側から刃末側に向かって2段階で狭くなるすくい面85b,95bを有して形成されている。【選択図】 図8
