| 摘要 |
A cutting mechanism (100) for a strapping tool (10) of a type used to apply a steel strap (12, 14) in a tensioned loop around a package and connected to itself by a series of interlocking shoulders punched into its overlapped ends comprises an anvil (104) arranged to support the overlapped ends (12, 14) of the strap, a cutter holder (130) movable towards and away from the anvil (104), and an elongate cutter (120) mounted removably in the holder (130). The cutter (120) extends crosswise in relation to the overlapped ends (12, 14) of the strap when they are supported by the anvil (104). The cutter (120) is movable conjointly with the holder (130), towards and away from the anvil (104). The cutter (120) has a polygonal profile defining plural, elongate, parallel cutting edges (122), one of which projects toward the anvil (104) when the cutter is mounted in the holder (130). The cutter (120), which is removable from the holder (130) when the cutting edge (122) projecting towards the anvil (104) becomes dull, is re-mountable in the holder (130) so that another of the cutting edges (122) projects towards the anvil (104). The cutter (120) profile may be triangular, preferably equilateral, or quadrilateral, preferably rhombic or square. An equilateral, triangular profile is most preferred since it includes three cutting edges (122). <IMAGE> |
