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    • 8. 发明授权
    • Spring package for a vibration welding device and respective vibration welding device
    • US11097373B2
    • 2021-08-24
    • US16850247
    • 2020-04-16
    • Branson Ultraschall Niederlassung der Emerson Technologies GmbH & Co. OHG
    • Michal MotovskyWilfried LotzWolfgang Kreckel
    • B23K20/00B23K20/10B23C3/16
    • A spring package for a vibration welding device includes a first longitudinal bar for a fixed connection to a frame of the vibration welding device and a second longitudinal bar parallel to and movable with respect to the first longitudinal bar as well as for connection to a tool. A first axis of the spring package extends halfway between and parallel to the longitudinal axis of the first and second longitudinal bar. A plurality of leaf springs are further provided, each connected with a first end to the first longitudinal bar and with a second end to the second longitudinal bar, wherein a second axis of the spring package extends perpendicular to the first axis as well as, in an inactive state of the spring package, parallel to the plurality of leaf springs so that a spring center line extends, in an inactive state of the spring package, parallel to the second axis in the middle of the leaf spring. Each of the plurality of leaf springs includes a first portion adjacent to the first and/or second longitudinal bar, the first portion consisting of at least one radius so that the first portion is formed concave with respect to the spring center line. The first portion transitions continuously into a second portion which is formed convex with respect to the spring center line, and the second portion transitions continuously into a center portion adjacently arranged relative to the first axis so that a thickness of the respective leaf spring is at the lowest in the center portion, especially at the first axis.