Rotary acoustic horn

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 65/08 (2006.01) B06B 3/02 (2006.01) B23K 20/10 (2006.01) G10K 11/02 (2006.01)

Patent

CA 2258073

A rotary acoustic horn (10, 10', 10'', 30, 30', 50) imparts energy at a selected wavelength, frequency, and amplitude. The horn includes a cylindrical shaft (12) and a cylindrical welding portion (14) mounted on and coaxial with the shaft. The diameter of the welding portion is greater than the diameter of the shaft. The welding portion has a cylindrical weld face (16) having a diameter that expands and contracts with the application of ultrasonic energy, and first and second opposing end portions. At least one end portion is formed with a first undercut (22, 24); the radial width and the depth of the first undercut is selected to affect the amplitude of vibration at the weld face to provide a desired amplitude profile along the axial length of the weld face.

Pavillon acoustique rotatif (10, 10', 10'', 30, 30', 30'', 50) communiquant de l'énergie à des longueurs d'ondes, fréquences et amplitudes choisies. Le pavillon inclut une tige cylindrique (12) et une partie cylindrique de soudage (14) montée sur la tige, de façon coaxiale. Le diamètre de la partie de soudage est plus grand que le diamètre de la tige. La partie de soudage possède une face cylindrique de soudure (16) possédant un diamètre extensible et rétractable en fonction de l'application d'énergie ultrasonique ainsi qu'un premier et un second élément d'extrémité opposés. Au moins un élément d'extrémité est formé d'une première encoche (22, 24). La largeur radiale et la profondeur de la première encoche sont sélectionnées de manière à agir sur l'amplitude de vibration de la face de soudure pour obtenir le profil d'amplitude désiré sur la longueur axiale de la face de soudure.

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