| 摘要 |
<p>A mechanism for supporting at least two rolls for an indefinite length web process. The mechanism includes a shaft (12) having a first end (52) and a second end (54). A first spindle (20) including a mounting portion (22) and a shank portion (24) is rotatably mounted on the shaft (12) such that the mounting portion (22) of the spindle (20) is proximate the second end (54) of the shaft (12) and the shank portion (24) is proximate the first end (52) of the shaft (12). The first spindle (20) includes a mounting portion (22) and the shank portion (24). The mounting portion (22) is adapted to telescopically accept and support one of the rolls (60). Associated with the first spindle (20) and located proximate the first end (52) of the shaft (12) is a brake or motor for controlling the rotation of the first spindle (20) about the shaft (12). A second spindle (30) is rotatably mounted on the shank portion (24) of the first spindle (20), preferably with low-friction bearings (32, 34) so that the second spindle (30) may rotate independently apart from the first spindle (20). Finally, a brake or motor for controlling the rotation of the second spindle (30) about the shank portion (24) of the first spindle (20) is provided and located proximate the first end (52) of the shaft (12). Such a mechanism allows independent unwinding or winding tension of the materials delivered from or wound on each of the rolls. Additionally, the mechanism allows for the exchange of depleted rolls for full rolls without disassembly of the rotation control means.</p> |
