EP2331268B1 - Dispositif pour générer des vibrations à haute fréquence et procédé pour faire fonctionner ce dispositif - Google Patents

Dispositif pour générer des vibrations à haute fréquence et procédé pour faire fonctionner ce dispositif Download PDF

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Publication number
EP2331268B1
EP2331268B1 EP09783445.1A EP09783445A EP2331268B1 EP 2331268 B1 EP2331268 B1 EP 2331268B1 EP 09783445 A EP09783445 A EP 09783445A EP 2331268 B1 EP2331268 B1 EP 2331268B1
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EP
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Prior art keywords
sleeve
oscillation
coupling
oscillator
ultrasound
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EP09783445.1A
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German (de)
English (en)
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EP2331268A2 (fr
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Josef Gmeiner
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency

Definitions

  • the present invention relates to a device for generating high-frequency oscillations according to the preamble of the independent claims. Furthermore, the invention relates to methods that make use of said device.
  • Ultrasonic devices are used for welding material webs, for soldering, mixing, applying z.
  • multi-component adhesives, cleaning and separating, riveting, insertion, etc. used as multi-component adhesives, cleaning and separating, riveting, insertion, etc.
  • the WO 2008/037256 A2 describes a set in rotation sealing or welding sonotrode (ultrasonic oscillator), which protrudes with one end into a hollow shaft and is fixed to the inner wall by means of a sonotrode support. Also, a booster and a converter are arranged in the hollow shaft.
  • the hollow shaft is mounted on the outside with ball bearings a fixed housing and can thus be offset together with sonotrode, booster and converter in rotary motion.
  • the sealing or welding surface of the sonotrode is disposed outside of the hollow shaft to interact with the peripheral surface of a counter tool on a workpiece. Accordingly, the ultrasonic vibrator is partly housed in the hollow shaft (sleeve) while a portion outside the sleeve is arranged, namely the tool portion with the sealing or welding surface.
  • the sonotrode is arranged laterally outside a rotatable cylindrical housing (sleeve).
  • the sonotrode is connected via a coupling member arranged in the housing with a converter in connection, wherein the coupling member by means of metallic diaphragms with the Inside the housing is connected.
  • the housing is rotatably mounted by means of ball bearings in vertical supports, so that with the housing and the converter, the coupling member and the sonotrode are rotated.
  • the outside of the housing (sleeve) arranged sonotrode is placed in longitudinal vibrations and creates a weld on a workpiece, which is guided between the contact surface of the sonotrode and an anvil.
  • a disadvantage of this known device is that a highly accurate adaptation of ultrasonic oscillator and vibrating element is necessary to be offset, the oscillation frequency is also limited to the frequency of the ultrasonic vibrator.
  • the indication of appropriate Methods and uses for such a device is also an object of the present invention.
  • At least one coupling section fixedly connected thereto is arranged, the two ends of the sleeve projecting beyond the coupling section in each case.
  • This construction enables the ultrasonic vibrator to be located entirely within the sleeve. It not only results in a space advantage, but it can also be realized a bearing of the sleeve independently of the ultrasonic vibrator. All that needs to be provided is a power supply from the ultrasonic converter to the ultrasonic oscillator. It has also been found that accommodating the ultrasonic vibrator in the sleeve allows an excellent, stable coupling to the sleeve by means of the at least one coupling section.
  • the coupling length is at least 50% shorter than the axial extent of the ultrasonic vibrator.
  • the length of the vibration structure was tuned to the excitation wavelength (n ⁇ ⁇ / 2, where n is a natural number is).
  • the largest possible contact surface of the vibration structure was realized at the ultrasonic vibrator, so that the vibration structure can be excited by the highest possible amplitude of the excitation frequency.
  • the coupling length of the coupling portion is at least 60% shorter than the axial extent of the ultrasonic transducer, preferably shorter than 75%, preferably shorter than 90%.
  • the coupling length is therefore chosen to be very small, on the one hand to enable the sleeve to vibrate, on the other hand, but not to obtain a rigid coupling and thus movement restriction of the sleeve.
  • a gap between the inner wall of the sleeve and the outer periphery of the ultrasonic vibrator is expediently present.
  • the gap width can be in the millimeter range. It is essential that sleeve and ultrasonic vibrator do not touch during operation, because then a detuning would result.
  • the term "sleeve” according to the present invention refers in the present case to a structure which, at least in the region of the ultrasonic vibrator, surrounds the latter circumferentially at least partially in order to ensure attachment to the circumference of the ultrasonic vibrator.
  • the cross section of the sleeve can take various forms. It is also possible that the cross section varies in the axial direction. According to an exemplary embodiment the sleeve has a continuous round cross-section, is thus designed as a round tube and preferably extends linearly in the axial direction. Other cross sections are possible.
  • the sleeve may be formed hollow or partially filled throughout.
  • the ultrasonic vibrator according to the present invention may be formed in particular cylindrical, wherein the one or more coupling portions are arranged on the outer periphery.
  • the coupling length is so short and the coupling location chosen such that the transverse vibrations of the sleeve substantially no load on the Exert vibrations of the ultrasonic vibrator.
  • the sleeve can be substantially transversal oscillations, where it exerts almost or even no effect on the ultrasonic transducer .
  • the coupling is preferably carried out in a vibration extremum of the sleeve transversal oscillation.
  • the sleeve and possibly coupled with her work tools are thus stimulated and then swing independently, without in turn to influence the ultrasonic transducer, such as an ultrasonic excitation pin in the sleeve.
  • her work tools such as an ultrasonic excitation pin in the sleeve.
  • Significant amplitude losses do not occur with appropriate tuning.
  • the amplitude of the ultrasonic oscillator itself is preferably not or hardly influenced by the vibration of the sleeve.
  • At least one coupling section fixedly connected thereto is likewise arranged between the outer circumference of the ultrasonic oscillator and the inside of the sleeve, in which case the sleeve is mounted on its inside and / or outside independently of the ultrasound oscillator.
  • the sleeve and the bearing are coupled directly to each other. It is therefore not arranged as in the prior art, an ultrasonic transducer between sleeve and bearing.
  • This embodiment increases the flexibility of use enormously.
  • the device is designed such that the ultrasonic vibrator excites the sleeve to a transversal vibration whose amplitude is greater by at least 50% than a possibly also excited longitudinal vibration, preferably greater than 75%, particularly preferably greater than 90%.
  • transversal vibrations are realized mainly be unlike DE 103 43 325 A1 in which transversal and longitudinal waves have approximately equal amplitudes.
  • Such vibration excitation can be achieved essentially by the at least one narrow coupling section.
  • the sleeve has a length of n ⁇ ⁇ / 2 + 2 ⁇ x, where ⁇ is the wavelength of the excited oscillation of the sleeve and x ⁇ / 2. It has been found that an extension of the sleeve over the in DE 103 43 325 A1 considered necessary length of n ⁇ ⁇ / 2 by a distance x allows a much better excitation of transversal oscillations. In experiments, it has been found that a choice of x in the range of greater than ⁇ / 30 and smaller than ⁇ / 2 is possible, preferably ⁇ / 15 ⁇ x ⁇ / 5. According to a preferred embodiment, x is chosen larger than 1 mm.
  • the sleeve is at one or both of its end faces in the inside and / or outside, ie at its inner or outer circumference, attacking bearings (radial bearings) stored.
  • Such storage makes it possible to provide the bearings directly inside and / or outside circumference of the sleeve. Indirect storage via an intermediate ultrasonic transducer is unnecessary.
  • the bearing seats can be precisely adapted to the excited transversal oscillations, on the one hand to allow optimum power and on the other hand largely avoid swinging the bearings in the transverse direction, ie axial direction of the sleeve, and also in the longitudinal direction.
  • the ultrasonic vibrator is in the sleeve axially between two end-side, on the inside of the sleeve attacking bearings (radial bearings).
  • the respective free ends of the sleeve are unsupported, so they can swing freely.
  • the radially engaging bearings are in this case for example offset a little inwardly and preferably engage in the region of the outermost nodes of the transverse waves on the sleeve. Since the bearings and the sleeve have finite thicknesses, the center lines of the sleeve and the bearing points - which are for example designed as a bearing webs - can be used to realize an optimized coupling. In other words, in this case the center line of a bearing bar meets the center line of the sleeve in one of its transversal vibration nodes. The center lines correspond to the so-called "neutral fibers" or "neutral axes".
  • the wall thickness of the sleeve can be chosen according to the current knowledge in a wide range. It is preferably depending on the application in the range of 1 mm to 100 mm, more preferably in the range of 5 mm to 100 mm.
  • the frequency of the transverse vibration with which the sleeve is vibrated advantageously deviates no more than 2% from the excitation frequency of the ultrasonic vibrator.
  • the transmission of the excitation frequency from the ultrasonic oscillator via the at least one coupling section on the sleeve is thus effectively realized. It can be assumed that the sleeve is put into a natural vibration by the excitation.
  • ultrasonic vibrators are excited at a frequency of 19.5 - 20.5 kHz.
  • the coupling portion is provided in the region of a vibration, in particular in a vibration extremum, with respect to the transversal vibration of the sleeve.
  • the coupling portion has a length in the axial direction of 2-20 mm, along which it is firmly connected to the inside of the sleeve. It has been found in experiments that for generating the high frequency sleeve vibrations of the invention, the web thickness can be up to 30% of half the wavelength of the induced sleeve vibration.
  • the coupling portion is fixed continuously and radially circumferentially on the outer circumference of the ultrasonic vibrator. This coupling ensures a high energy transfer from the ultrasonic vibrator to the sleeve with a total small mounting surface.
  • the at least one coupling section is provided only at spaced-apart regions along the circumference of the UI-traschall oscillator, these areas representing the coupling section as a whole. If here generally from coupling section the speech is, this may consist of a contiguous area or of several separate areas.
  • the web on the circumference of the ultrasonic vibrator is provided (for example, unscrewed) and formed integrally therewith, and the sleeve shrunk onto this web and / or pressed.
  • an alternative embodiment for fastening the sleeve on the ultrasonic oscillator provides that the coupling portion is designed as a radially inwardly directed, one-piece web or collar of the sleeve, whose free end is attached to the ultrasonic oscillator.
  • the web can thereby rotate closed or have interruptions.
  • This design also allows the inventive, only over a narrow or small area extending attachment between the sleeve and ultrasonic vibrator. It is advisable to attach the web of the sleeve, for example by means of a shrink and / or press fit on the ultrasonic vibrator.
  • the web or collar itself can also be formed as a separate part, which is firmly connected on the one hand with the sleeve and on the other hand with the ultrasonic vibrator.
  • the web or collar thickness can then be substantially smaller than the length of the ultrasonic vibrator.
  • a material is used for the sleeve, which has a high strength and little Has abrasion.
  • Prior art sonotrodes that contact workpieces are typically made of special aluminum or titanium.
  • a harder, more abrasion-resistant material can be selected, since no consideration has to be taken of the ultrasonic vibrator.
  • a particularly preferred development of the invention is characterized in that the ultrasonic oscillator and the sleeve attached to it are designed as rotating bodies.
  • the roller can be directly driven or towed. In a direct drive, the ultrasonic vibrator and / or the sleeve can be driven.
  • the abovementioned steel construction of the sleeve is particularly advantageous since it then has only a very small deflection, so that even very long sleeves with a length of several meters and thus corresponding processing widths can be realized.
  • various tools or energy converters can preferably be arranged on its outer circumference, in particular cutting edges, piezo transducers, embossing tools, welding pattern tools and / or welding edges.
  • the amplitudes of the bending or transversal oscillations can thus be effectively utilized in a variety of ways.
  • the sleeve may in this case be stationary or rotating.
  • the sleeve has an embossing profiling on its outer circumference
  • various material webs can be processed in interaction with a counterpressure tool, for example webs for the production of corrugated cardboard.
  • a solidification of webs is possible.
  • the sleeve is coupled to a device which oscillates in the axial direction due to the vibration excitation of the sleeve.
  • This device can also be designed as a tool of various designs, in particular as an axially movable knife, as a second UI-trasound oscillator (which is excited by the sleeve to vibrate, in which case its vibrations are used as exciter vibrations in a second sleeve), as an embossing tool , Stamp, drill or erosion tool.
  • a device for example a knife, which is set in oscillation in the axial direction, protrudes axially outwardly through a bearing supporting the sleeve.
  • a high-frequency oscillating blade can be realized, which can still be used due to the above-described little or no existing feedback to the ultrasonic vibrator when the cutting edge has become shorter by a prolonged use.
  • this knife could then no longer be used due to the resulting detuning.
  • no such coordination is required, resulting in longer operating times and cost savings.
  • the cross section of the ultrasonic vibrator can take various geometric shapes. For example, it is circular, square, rectangular or elliptical. The same applies to the cross section of the sleeve.
  • the sleeve - apart from its attachment portion on the ultrasonic oscillator - has a constant cross section over its entire length.
  • An example of this is the above-mentioned tubular design as part of a rotating roll.
  • an ultrasound oscillator each with an optional amplitude transformation piece, ultrasonic converter and power supply, is provided on both sides of the sleeve.
  • ultrasound from both end faces can be coupled into the sleeve, so that an overall higher power supply is possible.
  • one or both ultrasonic vibrators can be driven.
  • the sleeve may also have its own drive.
  • the invention also relates to a method for generating ultrasound and exploiting the vibrations obtained.
  • ultrasound energy is transmitted to a sleeve by means of the device according to the invention described above.
  • various uses of the device according to the invention are possible. These include, but are not limited to, heating (especially water), filtering, and pulping, including sewage sludge cleaning, cutting, drilling, joining, embossing, solidifying, or smoothing materials.
  • a metal tube preferably made of brass, coupled to the sleeve and charged with circulating water.
  • the coupling causes the brass tube to vibrate and thereby heat up, part of the heat being dissipated directly to the water.
  • FIG. 1 a first embodiment of a device 1 according to the invention is shown.
  • the sectional view of the FIG. 1 shows a tubular sleeve 25 made of a metal, for example made of hardened steel or a steel alloy.
  • the sleeve 25 has z. B. has a length of 4000 mm and has a wall thickness of 10 mm.
  • the outer circumference of the sleeve 25 is for example 150 mm and the inner circumference accordingly 140 mm (no scale representation).
  • the sleeve 25 has at its two end faces in each case a bearing 30, which in the present case are each designed as pins and have a central, open at both ends of the tube 32, one part of which extends into the sleeve 25 and the other part of the sleeve 25 protrudes ,
  • the tube 32 has on the outer circumference side two axially mutually offset circumferential radial webs 34, whose free ends are fixedly connected to the inner wall of the sleeve 25, for example by press fits.
  • the radial webs 34 are arranged in the sleeve 25 such that the free ends 26 of the sleeve 25 remain uncoupled.
  • the shown bearing of the sleeve 25 has the consequence that the ultrasonic oscillator 20 and the bearings 30 are not directly connected to each other.
  • a cylindrical ultrasonic vibrator 20 is arranged, which may also be made of a steel.
  • the ultrasonic oscillator 20 is connected via a line 18 with one (or more) optional amplitude transformation piece 14 or booster and an adjoining ultrasonic converter 12.
  • the ultrasonic converter 12 is connected to a power supply 10.
  • the elements 10, 12, 14 are in the FIG. 1 shown only schematically. In the other figures, they were mainly not shown for the sake of simplicity, s. but Figs. 22 and 24. It should be noted that the ultrasonic converter 12 is also disposed in the sleeve can be, with an external arrangement easier cooling is possible. Also it can be changed more easily.
  • the ultrasonic oscillator 20 is fixedly connected to the inner wall of the sleeve 25 by means of a radially encircling, continuous, here designed as a web coupling portion 22.
  • the coupling portion 22 may be formed, for example, from the solid material of the ultrasonic vibrator 20 by turning and be connected to the sleeve 25 by press fits. Alternatively, the coupling portion 22 is integrally connected to the sleeve 25.
  • Other connection possibilities of coupling section 22, ultrasonic vibrator 20 and sleeve 25 are possible and are obvious to those skilled in the art.
  • the coupling length AL of the coupling portion 22 is substantially smaller than the axial extent AE of the ultrasonic vibrator 20 and has, for example, a length of 5 mm, along which it is firmly connected to the inside of the sleeve 25.
  • the coupling length AL is in this case clearly below the wavelength ⁇ , with which the sleeve 25 oscillates, preferably below 30% of ⁇ / 2.
  • the ultrasonic oscillator 20 is excited, for example, in the known frequency range of 19.5 - 20.5 kHz and excites accordingly via the coupling portion 22, the sleeve 25 to oscillate.
  • FIGS. 2 and 3 are schematic, in particular serve the deflections shown of the ultrasonic vibrator 20, the sleeve wall and the bearing 30 for illustrative purposes only. It becomes clear that the circumferential coupling section 22 is fixed in a vibration extremum of the transverse vibrations (corresponding to a vibration node of the small longitudinal vibrations, not shown). The movements of the ultrasonic vibrator 20 are thus transmitted with great effectiveness to the sleeve 25, so that they can be offset with correspondingly large amplitudes in transverse oscillations.
  • the bearings 30 are also influenced by the vibrations of the sleeve 25.
  • their axial position remains almost unchanged. This is in particular due to the coupling of the radial webs 34 in nodes of the transverse oscillations of the sleeve 25, when the radial webs 34 and the sleeve are idealized as strokes (neutral fibers), these strokes then meet in a node of the transverse oscillations.
  • the geometries of the elements involved are chosen such that the forces acting on the bearings 30 substantially cancel, so that they resonate only to an insignificant extent.
  • the length of the sleeve 25 of this and the devices described below need not be harmonically tuned to the excited or excited transverse vibration of the sleeve 25, as described in the prior art (s. DE 103 43 325 A1 ).
  • a sleeve piece of length x with x in the range of ⁇ / 30 to below ⁇ / 2 is preferably selected on both sides of a vibration node of the transverse vibration, preferably in the range ⁇ / 15 ⁇ x ⁇ / 5.
  • FIG. 1a is indicated schematically that the bearings 30 can also attack on the outer circumference of the sleeve 25.
  • FIGS. 4 to 6 a concrete application of a device 101 according to the invention is shown, in which an axially oscillating blade 40 is arranged in the concentrically extending tube 32 of a bearing 30.
  • the bearing 30 on the opposite side of the sleeve 25 is opposite to the embodiment of FIG. 1 unchanged.
  • the knife 40 has a radially encircling, full-surface disc 44, which is arranged inside the sleeve beyond the radial webs 34 and is fixed peripherally to the inner wall of the sleeve 25.
  • the disk edge is in this case arranged in a vibration node of the transverse vibration of the sleeve 25.
  • Of the disc 44 is perpendicular to a running along the sleeve axis rod 42 from at the free end of a cutting edge 46 is arranged.
  • the knife 40 leads into the FIGS. 6 and 7 shown linear reciprocating movements in the axial direction of the sleeve 25 from.
  • the rest position of the cutting edge 46 is defined here by the vertical line S, which is passed by the cutting edge according to the high-frequency excitation. With a likewise usual excitation of approximately 35 kHz, the cutting frequency is correspondingly high.
  • a device 201 according to the invention is shown with a likewise oscillating blade in the axial direction 50, wherein in this embodiment, the sleeve 25 is mounted only on one side in a bearing 30.
  • a knife 50 is provided, which in turn has a disc 54 - fixed in a vibration node of the sleeve transversal oscillation - and an axially outwardly extending rod 52.
  • a cutting blade (not shown) can be attached with two screws. An attachment of a drill or a punch or a stamping tool are also possible.
  • FIGS. 8 and 9 the operation of the tool 50 is shown in operation.
  • FIG. 10 schematically shows an inventive device 301 with a tool 60 which extends in the axial direction on the outside of the sleeve 25 (s. Fig. 10a which is a schematic representation of an end face of the sleeve 25 is seen from).
  • This tool 60 may be formed in particular as a cutting edge, but also as a welding edge or the like.
  • a device 401 according to the invention in which a tool 70 is arranged circumferentially around the outer circumference and has, for example, an embossing pattern or welding pattern.
  • the sleeve 25 is advantageously rotationally driven (drive not shown).
  • wallpaper patterns can be embossed with a corresponding embossing tool.
  • FIGS. 11 and 11a are only schematic diagrams to illustrate the mode of action, wherein FIG. 11a a schematic frontal view is.
  • the individual piezoelectric transducers 81 of the piezoelectric transducer devices 80 (in each case six piezo converters 81 arranged one above the other in the device 601, two each in the device 701, wherein the respective electrical leads of the piezoelectric transducers are not shown for simplicity) are compressed in accordance with the transversal vibrations of the sleeve 25 and stretched and convert this mechanical energy into electrical energy (the known to a person skilled in the art storage of the piezoelectric transducer devices 80 at their free ends is not shown here for the sake of simplicity).
  • two piezo-transducer devices 80 are provided, in the device 601 four and in the device 701 twenty.
  • a plurality of blind bores 89 spaced apart in the longitudinal direction of the sleeve 25 are present in order to arrange piezo transducer devices 80 at different points of the sleeve 25, ie at different oscillation bellies of the sleeve transversal oscillation.
  • a total of four rows of such piezocransmitter devices 80 are arranged offset by 90 ° around the circumference of the sleeve 25, four piezocransmitter devices 80 each being arranged on a common transversal oscillation belly which arises at the same axial height on the circumference of the sleeve.
  • Fig. 16-18 are on the sleeve 25 of the device 701, otherwise with those of Fig. 13-15 is identical, a total of twenty Piezowandler devices 80 attached, for example screwed.
  • the piezo-transducer devices 80 each have two piezo-transducers 81, which are arranged between a relatively short intermediate piece 82 and a counterpart 84 placed from above. Spacer 82, piezoelectric transducer 81 and counterpart 84 have mutually aligned through holes through which a respective screw 87 is guided, whose free end is screwed into one of the blind holes 89.
  • the intermediate pieces 82 of the devices 601, 701 serve to transmit the mechanical vibrations from the sleeve 25 to the piezoelectric transducers 81. Since the sleeve 25 has a circular outer contour, whereas the piezoelectric transducers 81 have a flat pressure surface, the intermediate pieces 82 absorb the vibrations of the sleeve 25 and in the radial direction to the piezoelectric transducer 81 from. Due to the flat contact of the intermediate pieces 82 to the piezoelectric transducer 81, these are loaded and unloaded uniformly over their pressure surface.
  • piezoelectric transducer devices 80 It is also a spatially staggered arrangement of the piezoelectric transducer devices 80 possible. Instead of circular spacers 82 and counterparts 84 are also possible with square base.
  • the electrical energy generated by the piezoelectric transducers 81 is advantageously tapped without the sleeve 25 serving as an electrical grounding line.
  • a device 801 is shown with which a liquid, in particular water, can be heated or heated. It has been shown that the energy transfer or energy conversion from mechanical vibration energy to thermal energy is very efficient.
  • a coupling piece 90 is arranged in the sleeve 25, which has an elongated cylindrical central part 92. At a free end of the central part 92, a circumferential radial web 94 is provided, which in turn is attached to the inner circumference of the sleeve 25, for example by means of a shrink fit.
  • the other free end of the coupling piece 90 protrudes from the sleeve 25, there to be connected via a pin connection - possibly by means of shrink fit or welding or screwing, etc. - with a hollow body 95 made of brass or other suitable, good heat conducting metal ,
  • the hollow body 95 in the present case consists of a brass tube with brass lids placed on both sides.
  • an inlet connection 91 and a discharge connection 92 are provided in order to supply cold water and to remove heated water.
  • the vibrations from the sleeve 25 are over the coupling piece 90 and the Transfer pin connection to the hollow body 95, which in turn is vibrated, which heat the water therein.
  • the device 801 can be used in particular as a water heater.
  • the devices according to the Figures 1-3 can be used for ultrasonic cleaning in liquids, for heating liquids, for filtration or the like.
  • a storage in the radial bearings 30 may be appropriate.
  • the invention has been explained in more detail with reference to some embodiments. Modifications of the invention within the scope of the claims are readily possible.
  • the type of coupling of the sleeve to the ultrasonic oscillator can be varied.
  • the sleeve itself may have different shapes and cross-sections, which also need not be homogeneous or uniform over the length.
  • the described fields of application are not exhaustively enumerated. That's the way it is, for example possible to obtain the electrical energy to drive vehicles of any kind with the presented or on the principle similar working devices.

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  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Claims (30)

  1. Dispositif (1 ; 101 ; 201 ; 301 ; 401 ; 501 ; 601 ; 701 ; 801) pour générer des oscillations à haute fréquence, avec au moins un convertisseur ultrasonique (12) ainsi qu'au moins un oscillateur ultrasonique (20) relié au convertisseur ultrasonique (12), dans lequel une douille (25) est fixée sur la circonférence extérieure de l'oscillateur ultrasonique (20) et dans lequel une section de couplage (22) au moins est disposée entre la circonférence extérieure de l'oscillateur ultrasonique (20) et la face intérieure de la douille (25) et reliée de manière rigide à ces derniers, caractérisé en ce que les deux extrémités de la douille (25) font saillie respectivement sur l'oscillateur ultrasonique (20).
  2. Dispositif selon la revendication 1, caractérisé en ce que la douille (25) est montée par sa face intérieure et/ou extérieure indépendamment de l'oscillateur ultrasonique (20).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la longueur de couplage (AL) est si faible et le lieu de couplage est choisi de sorte que les oscillations transversales de la douille (25) n'exercent essentiellement aucune influence de charge sur les oscillations de l'oscillateur ultrasonique (20).
  4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la longueur de couplage (AL) de la section de couplage (22) est de 50% au moins plus courte que l'étendue axiale (AE) de l'oscillateur ultrasonique (20).
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'oscillateur ultrasonique (20) est capable d'exciter la douille (25) en une oscillation transversale dont l'amplitude est de 50% au moins supérieure à celle d'une oscillation longitudinale également excitée le cas échéant.
  6. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la longueur (L) de la douille (25) ne correspond pas à une onde λ/2 de l'oscillation excitée de la douille (25) ou à un multiple de cette onde (L ≠ n • λ/2, n = nombre naturel).
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la douille (25) présente une longueur de n • λ/2 + 2 • x, sachant que λ est la longueur d'onde de l'oscillation excitée de la douille (25) et x < λ/2.
  8. Dispositif selon l'une des deux revendications précédentes, caractérisé en ce que λ/30 < x < λ/2, sachant que λ est la longueur d'onde de l'oscillation excitée de la douille (25).
  9. Dispositif selon la revendication précédente, caractérisé en ce que x > 1 mm.
  10. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la douille (25) est montée sur l'une ou les deux de ses faces frontales sur des paliers (30) en prise à l'intérieur et/ou à l'extérieur.
  11. Dispositif selon la revendication 10, caractérisé en ce que l'oscillateur ultrasonique (20), vu en coupe longitudinale à travers la douille (25), est disposé sans chevauchement avec le ou les palier(s) (30).
  12. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le ou les paliers (30) sont prévus plus près de l'extrémité libre correspondante de la douille (25) que ladite au moins une section de couplage (22).
  13. Dispositif selon l'une des deux revendications précédentes, caractérisé en ce que l'extrémité libre correspondante de la douille (25) n'est pas supportée.
  14. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'épaisseur de paroi de la douille (25) se situe dans la plage de 1 mm à 100 mm.
  15. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la fréquence de l'oscillation transversale à laquelle la douille (25) est mise en oscillation ne diffère pas de plus de 2% de l'oscillation d'excitation de l'oscillateur ultrasonique (20).
  16. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la section de couplage (22) est prévue dans la zone d'un ventre d'oscillation par rapport à l'oscillation transversale de la douille (25).
  17. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la section de couplage (22) présente dans la direction axiale une longueur de 2-20 mm, le long de laquelle elle est rigidement reliée à la face intérieure de la douille (25).
  18. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la section de couplage (22) présente dans la direction axiale une longueur atteignant 30% de λ/2, sachant que λ est la longueur d'onde de l'oscillation excitée de la douille (25).
  19. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la section de couplage (22) se présente sous la forme d'un talon périphérique continu sur la circonférence extérieure de l'oscillateur ultrasonique (20).
  20. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la section de couplage (22) se présente sous la forme d'un talon de la douille (25) orienté vers l'intérieur.
  21. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la douille (25) est réalisée en un matériau issu du groupe suivant : acier, alliages d'acier, aluminium, titane.
  22. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'oscillateur ultrasonique (20) et la douille (25) se présentent sous la forme d'un corps monté de manière rotative.
  23. Dispositif selon la revendication précédente, caractérisé en ce que l'oscillateur ultrasonique (20) et/ou la douille (25) se présente(nt) sous une forme directement entraînable ou tractable.
  24. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'un au moins des dispositifs suivants est disposé sur la circonférence extérieure de la douille (25) : bord coupant (60), convertisseur d'énergie de l'énergie mécanique en énergie électrique, outil d'estampage (70), outil de soudage d'échantillons (70), arêtes de soudure (60).
  25. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la douille (25) est couplée à un dispositif qui oscille dans la direction axiale, sachant que ce dispositif est choisi dans le groupe suivant : lame mobile axialement (40 ; 50), second oscillateur ultrasonique (90) qui est à son tour utilisé en tant qu'excitateur dans une seconde douille ou est couplé à un corps creux (95) pour chauffer un milieu qui y est injecté, outil d'estampage, étampe, foret, outil d'érosion.
  26. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'un dispositif (40, 90) mis en oscillation dans la direction axiale fait saillie axialement vers l'extérieur à travers un palier (30) supportant la douille (25).
  27. Procédé pour exploiter un dispositif (1 ; 101 ; 201 ; 301 ; 401 ; 501 ; 601 ; 701 ; 801) selon l'une des revendications précédentes, caractérisé en ce que ce dernier est utilisé pour chauffer, filtrer, séparer des matières, nettoyer des boues d'épuration, raccorder, gaufrer ou lisser, percer, convertir de l'énergie mécanique en énergie électrique.
  28. Procédé selon la revendication de procédé précédente concernant le chauffage de l'eau, caractérisé en ce qu'un tube métallique en laiton est couplé à la douille (25), lequel est chargé d'eau en circulation, sachant que le tube en laiton est mis en oscillation du fait du couplage et, de ce fait, chauffé, sachant qu'une partie de la chaleur est directement délivrée à l'eau.
  29. Procédé selon l'une des revendications de procédé précédentes, caractérisé en ce que le dispositif est immergé dans des liquides et y est exploité.
  30. Procédé selon l'une des revendications de procédé précédentes concernant la conversion d'énergie mécanique en énergie électrique, caractérisé en ce que l'énergie obtenue de la conversion de l'énergie mécanique en énergie électrique est utilisée pour propulser un véhicule.
EP09783445.1A 2008-09-26 2009-09-25 Dispositif pour générer des vibrations à haute fréquence et procédé pour faire fonctionner ce dispositif Active EP2331268B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008042419A DE102008042419A1 (de) 2008-09-26 2008-09-26 Vorrichtung zum Erzeugen von hochfrequenten Schwingungen sowie Verfahren zu deren Betreiben
PCT/EP2009/062477 WO2010034828A2 (fr) 2008-09-26 2009-09-25 Dispositif pour générer des vibrations à haute fréquence et procédé pour faire fonctionner ce dispositif

Publications (2)

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EP2331268A2 EP2331268A2 (fr) 2011-06-15
EP2331268B1 true EP2331268B1 (fr) 2019-07-17

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EP09783445.1A Active EP2331268B1 (fr) 2008-09-26 2009-09-25 Dispositif pour générer des vibrations à haute fréquence et procédé pour faire fonctionner ce dispositif

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EP (1) EP2331268B1 (fr)
DE (1) DE102008042419A1 (fr)
WO (1) WO2010034828A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012216603A1 (de) * 2012-09-18 2014-04-10 Siemens Aktiengesellschaft Verfahren zur Herstellung eines Sonotrodensystems, Pressvorrichtung sowie Sonotrodensystem
CN109529689B (zh) * 2018-11-23 2021-05-14 杭州辰阳浸塑有限公司 一种基于高压流速溶液冲击声波共振的超高压均质机
CN113464054B (zh) * 2020-03-30 2024-05-24 中国石油化工股份有限公司 钻井装置及钻井方法
DE102021113875A1 (de) 2021-05-28 2022-12-01 Herrmann Ultraschalltechnik Gmbh & Co. Kg Konvertereinheit mit mehreren Konverterelementen

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US3955740A (en) * 1975-06-09 1976-05-11 Branson Ultrasonics Corporation Vibratory seam welding apparatus
US4016436A (en) * 1975-12-10 1977-04-05 Branson Ultrasonics Corporation Sonic or ultrasonic processing apparatus
US4647336A (en) * 1985-03-08 1987-03-03 Kimberly-Clark Corporation Rebuildable support assembly
FR2809984B1 (fr) * 2000-06-09 2006-07-14 Aplix Sa Sonotrode rotative permettant de souder en continu sur une grande largeur
US6547903B1 (en) * 2001-12-18 2003-04-15 Kimberly-Clark Worldwide, Inc. Rotary ultrasonic bonder or processor capable of high speed intermittent processing
DE10343325A1 (de) 2003-08-13 2005-03-10 Herrmann Ultraschalltechnik Vorrichtung zum kontinuierlichem Verbinden und/oder Verfestigen von Materialbahnen mittels Ultraschall
WO2008037256A2 (fr) * 2006-09-28 2008-04-03 3L-Ludvigsen A/S Scelleuse à ultrasons rotative

Non-Patent Citations (1)

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Title
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Publication number Publication date
DE102008042419A1 (de) 2010-04-01
WO2010034828A3 (fr) 2010-07-15
WO2010034828A2 (fr) 2010-04-01
EP2331268A2 (fr) 2011-06-15

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