| 摘要 |
The invention relates to a holding-down device (1) for a trimming machine (19) for trimming sheet metal and/or metal strips, comprising at least one first holding-down ring (4) that can be arranged on a first drive shaft (3, 24, 25) provided for actuating a first circular knife (2, 21, 22), and at least one second holding-down ring (4) that can be arranged on a second drive shaft (3, 24, 25) provided for actuating a second circular knife (2, 21, 22), which interacts with the first circular knife (2, 21, 22) to generate cuts. The invention is characterized in that at least one holding-down ring (4) has a radially outer annular body (5) that can be arranged adjacent to the respective circular knife (2, 21, 22) and that is at least partially made of plastic, in which ring an annular fluid chamber (7) having at least partially flexible walls, is arranged. There is at least one fluid channel (8) formed on the respective drive shaft (3, 24, 25) and the holding-down ring (4), by way of which the fluid chamber (7) can be connected to a pressure-generating device in a fluid-conducting manner. |
