| 摘要 |
<p>The invention relates to an apparatus designed to place removable buttons having a spring, in particular a spiral spring, characterised by the fact that it includes a pedestal and a device which makes the buttons undergo a rotational movement combined with a translational movement around their axis. Said movement may be caused by the simple rotation of an apparatus part produced by a motor device located in the axis of the button to be placed or beyond, for example in a parallel axis, the rotation being transmitted by means of a cam. The button placement movement may also be generated by a simple translation movement: in one example, the rotation of the button is caused by balls wedged between recesses in one of the parts in translation and the threads of a screw holding the button to be placed. The apparatus may also have a loader in which the buttons have already been stacked, in which case, a base having a flexible membrane with an opening allowing through the flange and the free turns of the button to be placed as well as radiating slots which delimit sectors which move apart when the apparatus is withdrawn after a button has been placed are described. Furthermore, the apparatus may consist of the loader alone, which can be used in particular as a screw-driver.</p> |
