SONOTRODE

A sonotrode (1) comprising: a head (15) which defines a sealing surface (14) elongated along a first direction (A); and a first and a second drive unit (12) distinct from one another, each comprising at least one piezoelectric element (13); wherein first and a second drive unit (12) may be electrica...

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Bibliographische Detailangaben
Hauptverfasser:	MANCIN, SERGIO, MELANDRI, ANTONIO, GIORDANO, FRANCESCO, RAABE, MAGNUS, VOEGLER, ULRICH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CONVEYING ELECTRICITY 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:	A sonotrode (1) comprising: a head (15) which defines a sealing surface (14) elongated along a first direction (A); and a first and a second drive unit (12) distinct from one another, each comprising at least one piezoelectric element (13); wherein first and a second drive unit (12) may be electrically fed by an unique generator so as to cause the oscillation of head (15); the height (H) of head (15) measured along a second direction (B) transversal to sealing surface (14) being substantially equal to the half of the wavelength of the wave oscillating in the direction of second direction (B); sonotrode (1) further comprises: at least one slot (23) which extends through head (15) transversally to first and second direction (A, B); at least a finite number of nodal points (20) at which the amplitude of the oscillation of head (15) is substantially equal to zero; and a plane (P) on which at least some of nodal points (20) lie and which divides head (15) in a first portion (21) and in a second portion (22); the slot (23) being at a certain distance by plane (P).