| 摘要 |
The ultrasonic welding tool has a fluid drive. The ultrasonic welding tool is connected with a working piston (5) guided in a drive housing by a piston rod (3). The working piston divides the drive housing into a primary chamber (6) and a secondary chamber (7). A sensor (18,19) is provided for detecting a physical characteristic of the fluid drive. The sensor releases a current signal which is in correlation with the detected physical characteristic and which regulates both valves (16,17) by a regulator circuit, such that the detected physical characteristic follows a set point. |
