| 摘要 |
<p>Provided is a die set to be used, not only by general consumers but also by producers, in a paper sheet binding device for paper products, the die set being free from use of metal staples, glues, or the like, being excellent in safety, productivity, and cost performance, and facilitating disposal of paper sheets. The paper sheet binding die set includes a pair of dies (1, 2) arranged to face each other and having respective opposed surfaces (3, 4) provided with respective tooth portions (5, 6) capable of meshing with each other, the paper sheet binding die set being configured to bind a plurality of stacked paper sheets in a manner that the pair of dies (1, 2) pressurize the plurality of stacked paper sheets from both sides in a thickness direction and the respective tooth portions (5, 6) of the pair of dies (1, 2) are meshed with each other. The respective tooth portions (5, 6) formed on the respective opposed surfaces (3, 4) of the pair of dies (1, 2) each include a plurality of tooth portions each having a substantially triangular shape in cross section and a predetermined tooth width, and provided in series on a corresponding one of the respective opposed surfaces (3, 4). Of the respective tooth portions (5, 6) formed on the respective opposed surfaces (3, 4) of the pair of dies (1, 2), each of the plurality of tooth portions (5 (6)) of one of the pair of dies (1 (2)) includes, on one widthwise side or both widthwise sides, an inclined-surface portion (9) inclined in a narrowing direction toward a peak-top portion (7) of the each of the plurality of tooth portions (5 (6)) of the one of the pair of dies (1 (2)), and in each of the plurality of tooth portions (6 (5)) of another of the pair of dies (2 (1)), which face the plurality of tooth portions (5 (6)) of the one of the pair of dies (1 (2)), at least a peak-top portion (7) of the each of the plurality of tooth portions (5 (6)) exists up to a position at which the peak-top portion (7) of the each of the plurality of tooth portions (5 (6)) covers a valley-bottom portion (8) on the inclined-surface portion (9) side of the each of the plurality of tooth portions (5 (6)) of the one of the pair of dies (1 (2)).</p> |
