| 摘要 |
The invention refers to an arrangement in an actuating equipment (2) for an ultrasonic sealing unit (1). The actuating equipment (2) is of the type having a number of ceramic, piezoelectric plates (7), which are placed with metallic, conductive, interjacent sheets (8), coupled to an a.c. source. The ceramic plates (7) and metallic plates (8) are maintained together in a close relationship with a counterweight (9) by a fastening screw (10), which partially secures the actuating equipment (2) to the ultrasound-sealing unit (1), and partially performs a fastening force in the actuating equipment (2). The counterweight (9) has an inner diameter and an outer diameter. In order to have an even pressure load in the ceramic plates (7), a groove (12) is provided in the counterweight (9) inner diameter. |
