Arrangement in a drive unit for an ultrasound sealing unit

The invention relates to an arrangement in a drive unit (2) for an ultrasound sealing unit (1). The drive unit (2) is of the type which has a number of piezoelectric ceramic plates (7) disposed with interjacent, conductive metal sheets (8) coupled to an a.c. source. The ceramic plates (7) and the me...

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Bibliographische Detailangaben
Hauptverfasser:	RAABE, MAGNUS
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CONVEYING FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL HANDLING THIN OR FILAMENTARY MATERIAL MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY PACKING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TRANSPORTING UNPACKING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to an arrangement in a drive unit (2) for an ultrasound sealing unit (1). The drive unit (2) is of the type which has a number of piezoelectric ceramic plates (7) disposed with interjacent, conductive metal sheets (8) coupled to an a.c. source. The ceramic plates (7) and the metal sheets (8) are held together with a counterweight (9) by a clamping screw (10) which partly secures the drive unit (2) to the ultrasound sealing unit (1), and partly realises a clamping force on the drive unit (2). The counterweight (9) has an inner and an outer diameter. In order to obtain a uniform pressure loading on the ceramic plates (7), a groove (12) is provided in the inner diameter of the counterweight (9).