SONOTRODE
    1.
    发明申请
    SONOTRODE 审中-公开
    超声波发生器

    公开(公告)号:WO2011117119A1

    公开(公告)日:2011-09-29

    申请号:PCT/EP2011/053919

    申请日:2011-03-15

    Abstract: 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 piezo - electric 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).

    Abstract translation: 超声波发生器(1),包括:头部(15),其限定沿着第一方向(A)伸长的密封表面(14); 以及彼此不同的第一和第二驱动单元(12),每个包括至少一个压电元件(13); 其中第一和第二驱动单元(12)可以由独特的发生器电馈送以引起头部(15)的振荡; 沿着第二方向(B)横向于密封表面(14)测量的头部(15)的高度(H)基本上等于在第二方向(B)的方向上振荡的波长的一半; 超声波发生器(1)还包括:横向于第一和第二方向(A,B)延伸穿过头部(15)的至少一个狭槽(23); 至少有限数量的节点(20),头部(15)的振荡幅度基本上等于零; 和在第一部分(21)和第二部分(22)中至少部分节点(20)位于其上并且分隔头部(15)的平面(P); 槽(23)由平面(P)处于一定距离。

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