| 摘要 |
The sheet retaining device comprises an upper grid (14) and a lower grid (9) for retaining the sheets, consisting of the rods (15, 16) of jacks (rams) (10, 11, 17, 18) arranged in the front (7) and rear (8) walls of a magazine (6), the upper grid (14) consisting of a series of jacks (17, 18) each comprising a rod (15, 16) which can be deformed elastically, nested at one of its ends in a piston which can also be deformed elastically, the said elastically deformable rod (15, 16) being guided, during its displacement, in a bearing and via the circumferential surface of the piston sliding in the skirt of the cylinder of the jack (17, 18). <IMAGE> |
