Arrangement at soeminddrivningsvaerktoej

摘要

The invention relates to an arrangement for advancing a continuous strip of mutually integrated nails to the nail driving section (5) of a nail driving apparatus provided with a safety-catch device (24) and a nail strip magazine, and to hold the nail strip in the nail driving section. Single nails are stripped from the nail strip in the nail driving section by means of percussion and driven, in conjunction therewith, into the workpiece to be nailed. The magazine (6) incorporates a nail strip accommodating strip guide path (7) which adjoins the nail driving section (5) and in which the nail strip is held biassed towards a nail driving location in the nail driving section (5) by strip feed means (17, 18) located adjacent the strip guide path and engaging the nail strip located therein. The nail driving location is constructed in a manner to prevent a lone, unattached nail from twisting or turning therein. For the purpose of positioning the foremost nail in the nail strip in an exact position in the nail driving location (this foremost nail being the next in line for separation/driving into the workpiece) there is provided a rotatable nail positioning element (35) which is journalled for rotation and sideways movement in the nail driving section (5) and which is capable of being brought into engagement with the nail strip. The safety-catch device (24) is movable relative to the nail driving section and is held in a forward safety position by means of a coil spring. The safety device presents a latching surface (31) in the region of the positioning element (35), and arranged between the latching surface and the nail positioning element is a movable latching element (38). As the safety-catch device (24) is retracted (to its nail firing mode) the latching surface (31) is urged against the spherical latching element (38), which in turn moves the nail positioning element (35) into position-fixing latching engagement with the nail strip, in a region thereof immediately behind the foremost nail located in the nail driving location.