| 摘要 |
The present invention relates to an apparatus to sharply grind a drill screw nail grinding a main cutting blade of a drill screw nail such that the drill screw nail is easily driven into a steel beam or a section steel. A jig means (20) is arranged on a side of a semi-frame post (10) to grip a drill screw nail. A supply device (40) is arranged on a rear side of the jig means (20) such that a drill part (4) of the drill screw nail (1) is supplied to the jig means (20) by the supply device (40). Two grinders (30) are arranged on the front of the jig means (20) in parallel to the main cutting blade of the drill screw nail to grind the main cutting blade of the drill screw nail fixated to the jig means (20). The supply unit (40) comprises: a rotor means (410) arranged on a rear side of the jig means (20) and supplies the drill screw nail (1) to the jig means (20) such that the jig means (20) grips the drill screw nail (1); a sort means (430) arranged on a side part of the rotor means (410), and supplies the drill screw nail to the rotor means (410) one by one; a rotating means (440) arranged on a side part of the rotor means (410), and engaged with a pinion gear (421) of the rotor means (410) to rotate the rotor means (410) at a predetermined angle; and a pushing means (450) arranged on a rear side of the rotor means (410), and pushes the drill screw nail supplied by the rotor means (410) to the jig means (20). |
