| 摘要 |
The invention concerns a feed device (1) comprising a positioning piston (6) for holding a fastening element (2) during positioning, a catching clamp (5) for pre-positioning the fastening element (2) for the positioning piston (6) and a housing (3) for holding the positioning piston (6) and the catching clamp (5), the housing (3) having a feed channel (4) for feeding the fastening element (2) to the catching clamp (5) and the positioning piston (6) being adjustable for positioning the fastening element (2) relative to the housing (3), and the catching clamp (5) being able to be closed or opened substantially independently of the axial forward movements of the fastening element (2) during forward and backward movement of the positioning piston (6). The invention is characterised in that a particularly fast and reliable positioning of the fastening elements (2) is facilitated through the coupling of the positioning piston (6) and the catching clamp (5), in particular with a relatively low length to diameter ratio.
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