WO2010034828A2 - 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

Info

Publication number
WO2010034828A2
WO2010034828A2 PCT/EP2009/062477 EP2009062477W WO2010034828A2 WO 2010034828 A2 WO2010034828 A2 WO 2010034828A2 EP 2009062477 W EP2009062477 W EP 2009062477W WO 2010034828 A2 WO2010034828 A2 WO 2010034828A2
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
ultrasonic
coupling
vibration
ultrasonic vibrator
Prior art date
Application number
PCT/EP2009/062477
Other languages
German (de)
English (en)
Other versions
WO2010034828A3 (fr
Inventor
Josef Gmeiner
Original Assignee
Josef Gmeiner
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Josef Gmeiner filed Critical Josef Gmeiner
Priority to EP09783445.1A priority Critical patent/EP2331268B1/fr
Publication of WO2010034828A2 publication Critical patent/WO2010034828A2/fr
Publication of WO2010034828A3 publication Critical patent/WO2010034828A3/fr

Links

Classifications

    • 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.
  • a special device of this kind is known from DE 103 43 325 A1.
  • This describes a device for continuous bonding and / or solidification of material webs by means of ultrasound with a coupling pin formed as an ultrasonic vibrator and a peripheral sleeve on this (forming a total sonotrode), wherein the ultrasonic oscillator and the sleeve constitute a rotating roller.
  • This roller radially opposite is a counter pressure tool.
  • Axial to the said roller an amplitude transformation piece is attached, also called booster.
  • the amplitude transformation piece is followed by an ultrasonic converter with a power supply.
  • the length of the rotating roller corresponds to a ⁇ / 2 wave of the imposed vibration or a multiple thereof.
  • the rotating roller is formed by a sleeve or a tube, which is closed by a respective end pin.
  • the amplitude transformation pieces are connected to these trunnions.
  • the statement of corresponding methods and uses for such a device is also an object of the present invention.
  • a first aspect of the invention wherein between the outer circumference of the ultrasonic vibrator and the inside of the sleeve at least one fixedly connected to this coupling portion is arranged, its coupling length is at least 50% shorter than the axial extent of the ultrasonic vibrator.
  • the length of the oscillation structure was tuned to the excitation wavelength (n ⁇ / 2, where n is a natural number).
  • 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.
  • an excitation of the sleeve can be realized most suitably by the short coupling length of the coupling section. It is particularly advantageous that no tuning of the sleeve length to a multiple of half the wavelength of the excited vibration of the sleeve must be made.
  • 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 is expediently present between the inner wall of the sleeve and the outer circumference of the ultrasonic oscillator.
  • 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" refers to a structure which at least partially surrounds the circumference thereof, at least in the region of the ultrasonic transducer, in order to ensure attachment to the circumference of the ultrasonic transducer It is also possible for the cross section to vary in the axial direction According to an exemplary embodiment, the sleeve has a continuous round cross section, ie it is designed as a round tube and preferably extends linearly in the axial direction Other cross sections are possible.
  • the invention may be cylindrical, wherein the coupling section or sections are arranged on the outer circumference.
  • At least one coupling section fixedly connected thereto is arranged, the coupling length being so short and the coupling location selected such that the transversal vibrations of the sleeve have essentially no load influences exert the 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 arranged between the outer circumference of the ultrasonic oscillator and the inner side of the sleeve, 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 oscillator. 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 according to the third aspect of the invention allows an excellent, stable coupling to the sleeve by means of the at least one coupling section.
  • a fourth aspect of the invention is also between the outer periphery of the ultrasonic vibrator and the inside of the sleeve at least one firmly connected to this coupling portion is arranged, in which case the sleeve is mounted independently of the ultrasonic vibrator on its inside and / or outside.
  • 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.
  • no mechanical stress on the ultrasonic oscillator since it does not have to absorb any bearing forces.
  • a combination of the various aspects of the invention in a device for generating high-frequency vibrations is readily possible and even preferred.
  • 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%.
  • transversely oscillations be realized in the main, in contrast to DE 103 43 325 A1, in the transversal and longitudinal wave have approximately equal amplitudes.
  • Such vibration excitation can be achieved essentially by the at least one narrow coupling section.
  • x is chosen larger than 1 mm.
  • the sleeve is at one or both of its end faces in the inside and / or outside, i. stored on its inner or outer circumference, attacking bearings (radial bearings).
  • a bearing makes it possible to provide the bearings directly on the 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 energized transverse vibrations, on the one hand to allow optimal power and on the other hand, a swinging of the bearings in the transverse direction, i. Axial direction of the sleeve, and also to avoid in the longitudinal direction largely.
  • 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 sen, the center lines of the sleeve and the bearing points - which are designed for example 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 tests that for generating the high-frequency sleeve oscillations according to the invention, gene 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 transducer 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 ultrasonic vibrator, these areas representing the coupling section as a whole. If this is generally referred to as the coupling section, this may consist of a continuous 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 fixing 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 vibrator.
  • 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 transducer. 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 transducer.
  • 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 low 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.
  • a rotating roller which offers a variety of possible uses, for example in the production of flat material webs, in which a plurality of webs are welded together.
  • the roller can be directly driven or towed.
  • 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 profile 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 ultrasonic oscillator (which is excited by the sleeve to vibrate, then its vibrations are used as exciter vibrations in a second sleeve), as an embossing tool, stamp , Drill or erosion tool.
  • a device set in oscillation in the axial direction projects through the sleeve bearing bearing axially outward.
  • 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.
  • Figure 1 shows a longitudinal section of a first embodiment of a device according to the invention for generating ultrasound
  • Figure 1a is a similar embodiment as in Figure 1, but with bearings on the outer circumference of the sleeve.
  • FIG. 2 shows the device according to FIG. 1, excited to oscillate
  • FIG. 3 shows a further vibration state of the device according to FIGS. 1 and 2;
  • Figure 4 is a longitudinal section of a second embodiment with axially oscillating blade
  • FIG. 5 shows the device according to FIG. 4, excited to oscillate;
  • FIG. 6 shows a further vibration state of the device according to FIGS. 4 and 5;
  • FIG. 7 shows a longitudinal section of a third embodiment with an axially oscillating blade
  • FIG. 8 shows the device according to FIG. 7, excited to oscillate
  • FIG. 9 shows a further vibration state of the device according to FIGS. 7 and 8;
  • Figure 10 is a schematic side view of a fourth embodiment with a cutting edge along the outer circumference of the sleeve
  • Figure 11 is a schematic side view of a fifth embodiment with two piezoelectric transducers shown schematically on the outer circumference of the sleeve;
  • FIG. 11a is a front view of the device according to FIG. 11;
  • FIG. 12 shows a further vibration state of the device according to FIG. 11;
  • Figure 13 is a front view of a fifth embodiment with four piezo transducers
  • FIG. 14 shows the device according to FIG. 13 in a longitudinal section along A - A of FIG. 13;
  • FIG. 15 is a perspective view of the device according to FIGS. 13 and 14;
  • Figure 16 is a front view of the fifth embodiment of the sleeve with 20 piezo transducers;
  • FIG. 17 shows the device according to FIG. 16 in a longitudinal section along A - A of FIG. 16;
  • FIG. 18 the device according to FIGS. 16 and 17 in a perspective view
  • Figure 19 is a longitudinal section through a sixth embodiment with a liquid heating adapter (taken along A-A of Figure 20);
  • FIG. 20 is a front view of the device according to FIG. 19;
  • FIG. 21 shows the device according to FIGS. 19 and 20 in a perspective view
  • Figure 22 is a perspective, cut-away detail view of a sixth embodiment with partially protruding from the sleeve ultrasonic transducer;
  • FIG. 23 shows a schematic sectional partial view of the device according to FIGS. 22, and
  • Figure 24 is a perspective cutaway detail view of a seventh embodiment with two, partially protruding from the sleeve, ultrasonic vibrators.
  • FIGS. 1-3 show a first embodiment of a device 1 according to the invention.
  • the sectional view of Figure 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 shown only schematically in FIG. 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 can also be arranged in the sleeve, wherein in an external arrangement, a simpler 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.
  • the sleeve oscillates in the illustrated representation substantially transversely with a frequency which differs only in the low percentage range of the excitation frequency of the ultrasonic vibrator 20.
  • FIGS. 2 and 3 are diagrammatic; in particular, the deflections of the ultrasonic vibrator 20, the sleeve wall and the bearing 30 are merely illustrative. It becomes clear that the encircling coupling section 22 is located in an oscillation extra field of the transverse oscillations (corresponds to a vibration node) not shown small longitudinal vibrations) is attached. 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 of the devices described below is not harmonic to the excited or excited transversal vibration of the sleeve 25. must be correct, as described in the prior art (see 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.
  • FIGS. 4 to 6 show a concrete application of a device 101 according to the invention, 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 unchanged from the embodiment of Figure 1.
  • 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 performs the linear reciprocating movements in the axial direction of the sleeve 25 shown in Figures 6 and 7.
  • 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.
  • FIG. 7-9 is a device 201 according to the invention with a also shown in the axial direction oscillating blade 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 vibration - 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.
  • FIG. 10 shows diagrammatically an apparatus 301 according to the invention with a tool 60 which extends in the axial direction on the outside of the sleeve 25 (see Fig. 10a, which is a schematic representation seen from an end face of the sleeve 25).
  • 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 1 1 -18 three similar devices 501, 601 and 701 are shown, in which on the outer circumference of the sleeve 25 Piezowandler-Einrich- tions 80 are placed on the antinodes of the sleeve transversal vibration, for example, glued or screwed.
  • Figures 1 1 and 11 a are here only schematic diagrams to illustrate the mode of action, Figure 1 1 a is a schematic frontal view.
  • 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 lines 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.
  • trumpet-shaped centerpieces 83 are attached with an axial bore, in turn, the piezoelectric transducers 81 are stacked.
  • a counterpart 84 On the uppermost piezoelectric transducer 81 is a counterpart 84, which also has an axial bore, placed.
  • the counterpart 84, the piezoelectric transducer 81 and the middle piece 83 are connected to each other by means of a screw 85.
  • a plurality of blind bores 89 which are 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, that is to say at different oscillation bellies of the sleeve transversal oscillation.
  • a total of four rows of such piezoconductor devices 80 are arranged offset by 90 ° about the circumference of the sleeve 25, wherein in each case four piezo-transducer devices 80 are arranged on a common transversal vibration bulge which arises at the same axial height on the circumference of the sleeve.
  • piezocasting devices 80 are mounted on, for example screwed onto, sleeve 25 of device 701, which is otherwise identical to that of Figures 13-15.
  • 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, the piezoelectric transducers 81, however, have a flat pressure surface, take the intermediate pieces
  • piezo transducer devices 80 It is also a spatially staggered arrangement of the piezo 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.
  • FIGS. 19-21 show a device 801 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 elongate 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.
  • the hollow body 95 in the present case consists of a brass tube with brass lids placed on both sides. On the top side, 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 transmitted via the coupling piece 90 and the pin connection on the hollow body 95, which in turn is set in vibrations which heat the water therein.
  • the device 801 can be used in particular as a water heater.
  • any media can be heated.
  • FIGS. 22 and 23 show a further embodiment of the invention.
  • a voltage supply 10 for an ultrasonic converter 12 is explicitly shown, to which in turn an optional amplitude transformation piece 14 or booster is connected. It is also possible, for example, for two amplitude transformation pieces 14 connected in series to be provided.
  • an ultrasonic oscillator 120 is attached with a round cross section in the form of a front or coupling pin.
  • a tubular sleeve 125 is fastened via a coupling section 122, arranged centrally in the axial direction.
  • This is presently designed as a web or collar, which is a directed at the end face of the sleeve 125 inwardly, completely circumferential bend.
  • the web-shaped coupling section 122 is shrunk with its end face on the ultrasonic vibrator 120 and / or pressed.
  • the inner diameter of the sleeve 125 is selected such that a gap 29 exists between the sleeve inner wall and the outer wall of the ultrasonic vibrator 20, s.a. FIG. 23.
  • the sleeve 125 is preferably made of steel which has high strength and low abrasion.
  • the contact surface of the coupling portion 122 of sleeve 125 and ultrasonic vibrator 120 is compared to the length of the ultrasonic vibrator 120th chosen small. Only over this narrow range, the sleeve 125 is excited to vibrate. For larger contact area, however, the sleeve 125 would take over the excitation frequency of the ultrasonic vibrator 120, as is known from the prior art.
  • the diameter of the ultrasonic vibrator 120 was about 140 mm and its length (corresponding to ⁇ / 2) was about 100 mm.
  • the steel sleeve 125 had an outer diameter of 150 mm and a wall thickness of 5 mm.
  • the sleeve 125 was kept in water with impurities. At an excitation frequency of about 20 kHz by the ultrasonic vibrator 120 visible knots were measured by the impurities at a distance of 28 mm.
  • the length of the sleeve 125 can be selected independently of the excitation frequency of the ultrasonic vibrator 120.
  • the sleeve length does not have to be a multiple of ⁇ / 2, since the oscillation frequency of the sleeve 125 does not assume the oscillation frequency of the ultrasonic oscillator 120.
  • a radial bearing 130 is provided between the amplitude transformation piece 14 and the ultrasonic oscillator 20, by means of which the entire apparatus 901 can be set in rotation.
  • the devices according to FIGS. 1-3 and 22, 23 can be used, for example, for ultrasonic cleaning in liquids, for heating liquids, for filtering or the like.
  • a storage in the radial bearings 30 and 130 may be appropriate.
  • FIG. 24 shows a further embodiment of the invention.
  • this ultrasound oscillator 120 with associated amplitude transformation piece 14 ultrasonic converter 12 and power supply 10 and radial bearings 130 are provided at both ends of the sleeve 125.
  • the sleeve 125 can be set from its two end sides in vibration.
  • a vote of the sleeve length to the oscillation frequency of the sleeve 125 and / or a phase-offset coupling is appropriate.
  • the device of FIG. 24 is particularly suitable for arranging a counterpressure tool, in particular a counterpressure roller (not shown) parallel to the sleeve 125, in order, for example, to weld two or more material webs to a material web by means of the device 1001 according to the invention and the counterpressure roller.
  • a counterpressure tool in particular a counterpressure roller (not shown) parallel to the sleeve 125
  • cutting blades or embossing profiles on the sleeve 125 or the counter-pressure roller are possible, for example, to cut webs of material or to emboss a pattern, for example corrugated board or wallpaper.
  • the device 1001 according to the invention as well as the counterpressure roller can both be driven by means of motors. Alternatively, one of them is dragged through the other.
  • the deflection of the sleeve 125 is relatively small in radial load, so that previously reached large sleeve lengths can be realized.
  • the life or service life of a steel sleeve over that of aluminum or titanium is increased due to the small abrasion.
  • all illustrated devices 1, 101, 201, etc. may also be applications in which aluminum or titanium can be used as a sleeve material.
  • carbide can also be applied to a sleeve 25, 125 made of steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

L'invention concerne des dispositifs (1; 101; 201; 301; 401; 501; 601; 701; 801; 901; 1001) pour générer des vibrations à haute fréquence, comprenant au moins un convertisseur à ultrasons (12) et au moins un générateur d'ultrasons (20; 120) relié à ce convertisseur à ultrasons (12), un manchon (25; 125) étant fixé à la périphérie du générateur d'ultrasons (20; 120). Ces dispositifs se caractérisent en particulier par la géométrie des éléments individuels permettant de soumettre le manchon à des vibrations transversales en particulier, ces vibrations pouvant être ensuite utilisées pour diverses applications.
PCT/EP2009/062477 2008-09-26 2009-09-25 Dispositif pour générer des vibrations à haute fréquence et procédé pour faire fonctionner ce dispositif WO2010034828A2 (fr)

Priority Applications (1)

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

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008042419.6 2008-09-26
DE102008042419A DE102008042419A1 (de) 2008-09-26 2008-09-26 Vorrichtung zum Erzeugen von hochfrequenten Schwingungen sowie Verfahren zu deren Betreiben

Publications (2)

Publication Number Publication Date
WO2010034828A2 true WO2010034828A2 (fr) 2010-04-01
WO2010034828A3 WO2010034828A3 (fr) 2010-07-15

Family

ID=41381991

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113464054A (zh) * 2020-03-30 2021-10-01 中国石油化工股份有限公司 钻井装置及钻井方法

Families Citing this family (3)

* 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
DE102021113875A1 (de) 2021-05-28 2022-12-01 Herrmann Ultraschalltechnik Gmbh & Co. Kg Konvertereinheit mit mehreren Konverterelementen

Citations (5)

* Cited by examiner, † Cited by third party
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
US20040005431A1 (en) * 2000-06-09 2004-01-08 Serge Moulin Rotary sonotrode allowing continuous welding over a large width
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647336A (en) * 1985-03-08 1987-03-03 Kimberly-Clark Corporation Rebuildable support assembly
US6547903B1 (en) * 2001-12-18 2003-04-15 Kimberly-Clark Worldwide, Inc. Rotary ultrasonic bonder or processor capable of high speed intermittent processing

Patent Citations (5)

* Cited by examiner, † Cited by third party
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
US20040005431A1 (en) * 2000-06-09 2004-01-08 Serge Moulin Rotary sonotrode allowing continuous welding over a large width
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113464054A (zh) * 2020-03-30 2021-10-01 中国石油化工股份有限公司 钻井装置及钻井方法
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

Also Published As

Publication number Publication date
DE102008042419A1 (de) 2010-04-01
WO2010034828A3 (fr) 2010-07-15
EP2331268B1 (fr) 2019-07-17
EP2331268A2 (fr) 2011-06-15

Similar Documents

Publication Publication Date Title
EP2442964B1 (fr) Dispositif de traitement par ultrasons, et sonotrode pour scellage transversal correspondante
EP2621710B1 (fr) Unité émettrice d'ultrasons
EP2353737B1 (fr) Dispositif et procédé de traitement ultrasonique de matériau
DE112016007605B4 (de) Haltestruktur eines Ultraschallschwingung-Übertragungsmechanismus
EP2945793B1 (fr) Dispositif de soudage par ultrasons pourvu d'un contre-outil à découplage vibratoire
EP3096893B1 (fr) Unité de conversion
DE102008002744A1 (de) Ultraschallschwingeinheit mit Halterung
EP2331268B1 (fr) Dispositif pour générer des vibrations à haute fréquence et procédé pour faire fonctionner ce dispositif
EP1900499B1 (fr) Appareil pour la liaison et/ou la consolidation en continu de matériaux en bandes par ultrasons
WO2018041811A1 (fr) Système générateur d'ultrasons comportant un transformateur d'amplitude raccordé par la surface extérieure
EP2983891B1 (fr) Dispositif de soudage à l'aide d'ultrasons
DE1472357A1 (de) Mit Torsionsschwingungsenergie arbeitende Vorrichtung
DE10034057B4 (de) Vorrichtung zum Bearbeiten einer Materialbahn mit Ultraschall
EP1815966A2 (fr) Dispositif de soudage par ultrasons et procédé pour souder des bandes de matériaux
WO2024079284A1 (fr) Transducteur à ultrasons, dispositif doté d'un transducteur à ultrasons et utilisation d'un transducteur à ultrasons, et procédé correspondant
EP3536436B1 (fr) Dispositif et procédé de raccordement de pièces à usiner
DE102017106930B4 (de) Siebeinrichtung
DE102007053217B4 (de) Haftverschlussteil
EP3530359A1 (fr) Dispositif et procédé d'usinage de pièces à usiner ou d'objets
DE1200586B (de) Vorrichtung zum Zufuehren mechanischer Schwingungsenergie zu einem zu behandelnden Werkstueck
DE20314762U1 (de) Sonotrode
DE1103659B (de) Schwingungskoerper zum Erzeugen von Ultraschallschwingungen im Bereich von 20 kHz, insbesondere fuer Ultraschall-Reinigungsanlagen

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09783445

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2009783445

Country of ref document: EP