US 12,465,949 B2
Sonotrode having optimized slot geometry
Matthias Schweitzer, Keltern (DE)
Assigned to HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG, Karlsbad (DE)
Appl. No. 18/727,829
Filed by HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG, Karlsbad (DE)
PCT Filed Jan. 9, 2023, PCT No. PCT/EP2023/050262
§ 371(c)(1), (2) Date Jul. 10, 2024,
PCT Pub. No. WO2023/135068, PCT Pub. Date Jul. 20, 2023.
Claims priority of application No. 102022100500.3 (DE), filed on Jan. 11, 2022.
Prior Publication US 2024/0416387 A1, Dec. 19, 2024
Int. Cl. B06B 3/00 (2006.01)
CPC B06B 3/00 (2013.01) 20 Claims
OG exemplary drawing
 
1. An ultrasonic vibration element which can be set into resonant vibration with a longitudinal ultrasonic vibration in a longitudinal direction,
wherein the ultrasonic vibration element is bounded in the longitudinal direction on one hand by a rear face and on another hand by a front face,
wherein the front face is either intended to come into contact with a further ultrasonic vibration element in order to transmit the ultrasonic vibration to the further ultrasonic vibration element, or is designed as a sealing surface or adjoins a sealing surface which is intended to come into contact with a material to be processed and to transmit the ultrasonic vibration to the material to be processed,
wherein a circumferential lateral surface is provided, which connects the rear face and the front face to one another,
wherein the ultrasonic vibration element has a slit in the lateral surface,
wherein the slit has a slit length I in a slit longitudinal direction, a slit width b in a slit transverse direction and a slit depth t in a slit depth direction, the slit longitudinal direction, the slit transverse direction and the slit depth direction being arranged orthogonally to one another, the slit depth t being selected such that the slit completely penetrates the ultrasonic element, and the slit length I being greater than the slit width b,
wherein the slit is not axially symmetrical to a slit longitudinal axis along the slit longitudinal direction in a sectional view,
wherein the slit is bounded by two longitudinal walls and two cross walls, a first of the two longitudinal walls is at least in sections further away from the slit longitudinal axis than a second of the two longitudinal walls, and
wherein the slit is produced by first producing a slit with two parallel longitudinal walls and then making a recess in the first longitudinal wall.