EP3037181A1 - Ultraschallschneidevorrichtung, insbesondere für lebensmittel - Google Patents

Ultraschallschneidevorrichtung, insbesondere für lebensmittel Download PDF

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Publication number
EP3037181A1
EP3037181A1 EP15200849.6A EP15200849A EP3037181A1 EP 3037181 A1 EP3037181 A1 EP 3037181A1 EP 15200849 A EP15200849 A EP 15200849A EP 3037181 A1 EP3037181 A1 EP 3037181A1
Authority
EP
European Patent Office
Prior art keywords
cutting tool
sonotrode
inert
transmitter
vibrating
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP15200849.6A
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English (en)
French (fr)
Inventor
François VULCAIN
Thierry Gautier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sodeva TDS SARL
Original Assignee
Sodeva TDS SARL
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 Sodeva TDS SARL filed Critical Sodeva TDS SARL
Publication of EP3037181A1 publication Critical patent/EP3037181A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member

Definitions

  • the field of the invention relates to a device for vibrating ultrasound of an inert assembly.
  • the invention finds a particularly interesting application in the field of ultrasonic cutting of industrial products, and in particular in the sector of the food industry.
  • an ultrasonic vibration device comprising an electrostatic element which is excited by an ultrasonic vibration propagating perpendicularly to the cutting wire.
  • the ultrasonic vibrations of the blade although of moderate amplitude, have such an acceleration that the object tends not to adhere to the blade and can increase the cutting power of the blade.
  • the sharpening operation has the effect of impacting the vibratory characteristics of the blade and therefore modifying the resonance frequency of the blade, which causes an imbalance of the electroacoustic assembly.
  • the cutting machine comprising such an ultrasonic cutting device is sized to operate at a given frequency range, which imposes dimensional constraints of the blade.
  • an operator wishing to use the same cutting machine with different blade profiles depending on the products to be cut are unable to interchange blades with different profiles or different dimensions if these blades in question are not initially designed to resonate at the same resonant frequency.
  • the device proposes to use a sonotrode shaped cross whose branches are tuned to the frequency of the transmitter (1/2 wavelength).
  • the branches of the sonotrode are in interaction with an ultrasonic transmitter and with an inert element to vibrate, the other two branches of the cross are free to vibrate in resonance creating a band frequency pass of the electroacoustic ensemble centered on the frequency of the ultrasonic transmitter.
  • such a device can not be used as such in the field of ultrasonic cutting of industrial products.
  • the described device does not sufficiently center the bandwidth of the electroacoustic assembly on the resonant frequency of the transmitter, which does not provide sufficiently large yields.
  • the vibration amplitude of the inert element obtained by this device is also not sufficient for use other than welding.
  • the too small amplitude of the inert element of the device makes it possible to properly make cuts such that it is possible to make them with the cutting devices. by known ultrasounds with which the blade is resonant.
  • the device proposed in the document FR2651693 is also not suitable to be integrated in a fixed cutting machine because its geometry greatly limits the possibilities of implantation on machine.
  • the invention aims to provide a device for ultrasonic vibration of an inert cutting tool, particularly suitable for cutting industrial products, and more particularly to agro-food products, with a vibration amplitude greatly improved and also with better performance.
  • the ultrasonic vibrating device of an inert cutting tool according to the invention also aims to propose an architecture with multiple configurations making it possible to adapt to any type of use and thus facilitating its implantation in a cutting machine. ultrasound of industrial products.
  • sonotrode is understood to mean an element, advantageously metallic, which restores vibrational energy by "contraction / dilation” when it is subjected to ultrasound.
  • inert is understood to mean an element that is not tuned to the resonant frequency of the transmitter.
  • the electroacoustic assembly thus formed by the device generates a frequency bandwidth better centered on the frequency of the transmitter.
  • the device according to the invention also makes it possible to transmit to the inert element, the cutting tool in our application, vibrations with greater amplitudes than those permitted with the device described in the document. FR2651693 .
  • the device according to the invention also makes it possible to obtain a better yield than with the device described in the document FR2651693 .
  • the figure 1 represents in perspective the ultrasound vibrating device 100 according to the invention connected to an internal element to be vibrated, such as a cutting tool for cutting agri-food products.
  • the device 100 thus constitutes an assembly tuned to the resonance frequency of the transmitter 110, with the exception of the cutting tool 160.
  • the crown profile of the sonotrode 120 is intended to transmit a maximum amplitude and vibration efficiency to the cutting tool 160 while allowing vibration of the stabilizing sonotrode 130.
  • the two lateral branches 122, 123 are secured to the main part 121 via connection fillets 124.
  • the first branch 122 is connected to the ultrasonic transmitter 110 and the second branch 123 is adapted to be able to connect the stabilizing mass 130.
  • the stabilizing or stabilizing auxiliary sonotrode is an optional element, however, the presence of such a stabilizing mass positioned in the continuity of the ultrasonic transmitter makes it possible to further optimize the performance of the vibrating device 100 and to increase the efficiency. of the electroacoustic ensemble.
  • the circumferential periphery 126 of the main portion 121 of the crown 120 comprises flats 125 forming planar surfaces optimized to receive on the one hand the fixing system 140 and on the other hand the cutting tool 160.
  • the ring 120 comprises four flats 125 uniformly distributed around the periphery of the main portion 121; the number of flats of the ring being adjustable according to the number of vibrating elements that one wishes to position. So the form circular sonotrode offers the advantage of being able to freely vary the position, or even the number of inert elements to vibrate.
  • the ring 120 thus described makes it possible to put elements in vibration in three directions, the emitter 110 and the stabilizing mass 130 being advantageously positioned in the same direction perpendicular to the transverse plane of the ring which is parallel to the positioning plane of the elements, referenced AA on the figure 1 .
  • the flats 125 allow the fixing and the vibration of the various elements in this positioning plane AA.
  • FIGS. 3a, 3b and 3c represent sections along a transverse plane of the crown 120. These Figures 3a, 3b, 3c allow to illustrate more precisely three examples of realization of the profiles of the flanks of the main part of the crown.
  • the central main portion 121 comprise two flanks 127, 128 on which are connected the two lateral branches 122, 123.
  • the geometry of these flanks makes it possible to modify the amplitude of the vibrations transmitted to the cutting tool.
  • the profile of the flanks can be rectilinear as illustrated in figure 3a or conic as illustrated in figure 3b .
  • the profile of the flanks 127, 128 has a catenoid-type curved shape as illustrated in FIG. figure 3c .
  • the ring 120 is dimensioned so as to obtain a ratio between the outside diameter D b of the side branches 122, 123 and the thickness E p of the central portion 121 greater than 1. Compliance with this ratio makes it possible to optimize efficiency of the device 100 and thus transmit more vibrations to the cutting tool 160.
  • the outside diameter D pe of the main portion 121 of the ring 120 corresponds to a multiple of half a wavelength of the frequency of the emitter 110, and advantageously the diameter D pe is equal to half a wavelength, so that the ring 120 is resonant with the ultrasonic transmitter 110.
  • the stabilizing sonotrode 130 is sized to vibrate in resonance with the ring gear 120 and the transmitter 110. Therefore, the stabilizing sonotrode 130 has a length that is a multiple of the half wavelength of the frequency of the transmitter 110.
  • the length of the stabilizing sonotrode 130 is equal to the half-wavelength of the transmitter 110.
  • the stabilizing sonotrode 130 therefore participates in the vibration of the cutting tool 160. It is also possible to optimize the amplitude of the cutting tool 160 by simply modifying the shape of this stabilizing sonotrode 130. according to the invention, it is possible to simply modulate the amplitude transmitted to the cutting tool 160 on the same vibrating device 100 simply by interchanging stabilizing sonotrodes 130 having different shapes.
  • the stabilizing sonotrode 130 has a cylindrical shape or a truncated cone shape, the largest diameter of which is positioned opposite the ring 120.
  • the sonotrode 120 in the form of a ring completed by the stabilizing sonotrode 130 positioned in the extension of the transmitter 110 makes it possible to optimize the recentring of the bandwidth of the electroacoustic assembly with respect to the resonant frequency of the transmitter 110, and participates in increasing the efficiency of the electroacoustic device and the amplitude of the vibrations transmitted to the cutting tool 110.
  • the fastening system 140 makes it possible to connect the vibrating assembly to a non-vibrating assembly, such as a machine, without off-centering the bandwidth of the electroacoustic assembly. Therefore, the fastening system is also dimensioned so that it can vibrate with the other elements of the device 100.
  • the fastening system 140 may also consist of an ultrasound booster, a component conventionally used in ultrasonic applications.
  • the fixing system has a length that is a multiple of the wavelength of the frequency of the transmitter 110, and advantageously equal to the half-wavelength of the frequency of the transmitter 110.
  • the resonant extension 150 is dimensioned so as to allow the transmission of a radial vibration of the ring 130 to the cutting tool 160.
  • the length of the extension 150 is a multiple the wavelength of the frequency of the transmitter 110, and preferably equal to half a wavelength.
  • This resonant extension 150 may be an element commonly called “booster” in order to possibly allow a change in the radial amplitude transmitted to the inert cutting tool 160 if necessary.
  • the cutting tool 160 to be vibrated may advantageously be a metal blade, a vibrating system such as a wire, a composite blade, shaped tools of the punch type.
  • the device according to the invention there is no longer any limit or constraint related to the re-sharpening operations of the cutting blades insofar as the increase in the resonance frequency of the blade, inherent in this repair, does not destabilize plus the electroacoustic ensemble.
  • the device according to the invention also makes it possible to make cuts of products of various sizes with the same device and the same machine, in particular by the possibility of using a varied range of blades without dimensional constraints.
  • the invention has been particularly described for vibrating a cutting tool for cutting industrial products, and more particularly food products.
  • the problem is related to the particular field of cutting of agri-food products
  • the device according to the invention also makes it possible to make improvements in other technical fields requiring the vibration of an element.
  • the cutting tool described in the present application can easily be replaced by other inert elements for example to perform non-food product cutting operations, heat exchangers vibrating, cleaning, unclogging of filtering elements, of vibrating of bactericidal system, etc.
  • the invention has been particularly described with a single position of the inert cutting tool. However, it is expected to be able to easily and freely move the cutting tool on the periphery of the ring.
  • the invention has been particularly described with a single inert element to be vibrated; However, it is also conceivable to be able to vibrate several inert elements simultaneously, notably thanks to the particular shape of the sonotrode.
  • the invention has been particularly described with a particular architecture, however, it is expected to be able to modify the positioning of the transmitter, the sonotrode stabilizer, the inert element and the fastening system as a function of space constraints and desired applications.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP15200849.6A 2014-12-23 2015-12-17 Ultraschallschneidevorrichtung, insbesondere für lebensmittel Withdrawn EP3037181A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1463279A FR3030316B1 (fr) 2014-12-23 2014-12-23 Dispositif de mise en vibration par ultrasons d'un ensemble inerte pour la decoupe de produits industriels, notamment des produits alimentaires

Publications (1)

Publication Number Publication Date
EP3037181A1 true EP3037181A1 (de) 2016-06-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15200849.6A Withdrawn EP3037181A1 (de) 2014-12-23 2015-12-17 Ultraschallschneidevorrichtung, insbesondere für lebensmittel

Country Status (2)

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EP (1) EP3037181A1 (de)
FR (1) FR3030316B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3107664A1 (fr) * 2020-03-02 2021-09-03 Sodeva Tds Système de découpe ultrasonore

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3088567B1 (fr) * 2018-11-21 2020-11-13 Sodeva Tds Systeme de decoupe par ultrasons pour la decoupe de produits industriels, et notamment des produits alimentaires

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620121A (en) * 1984-05-30 1986-10-28 Taga Electric Company, Limited Piezoelectric apparatus for activating square plate resonator
FR2651693A1 (fr) 1989-09-08 1991-03-15 Mecasonic Sa Dispositif pour la mise en vibration d'un element inerte a l'aide d'une tete ultrasonique accordee .
EP0584670A1 (de) * 1992-08-28 1994-03-02 Societe Des Produits Nestle S.A. Ultraschallschneidvorrichtung
FR2735412A1 (fr) * 1995-06-19 1996-12-20 Unir Ultra Propre Nutrition In Dispositif de decoupage par ultrasons
EP0800900A1 (de) * 1996-04-12 1997-10-15 Ultex Corporation Ultraschallschneider

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620121A (en) * 1984-05-30 1986-10-28 Taga Electric Company, Limited Piezoelectric apparatus for activating square plate resonator
FR2651693A1 (fr) 1989-09-08 1991-03-15 Mecasonic Sa Dispositif pour la mise en vibration d'un element inerte a l'aide d'une tete ultrasonique accordee .
EP0584670A1 (de) * 1992-08-28 1994-03-02 Societe Des Produits Nestle S.A. Ultraschallschneidvorrichtung
FR2735412A1 (fr) * 1995-06-19 1996-12-20 Unir Ultra Propre Nutrition In Dispositif de decoupage par ultrasons
EP0800900A1 (de) * 1996-04-12 1997-10-15 Ultex Corporation Ultraschallschneider

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3107664A1 (fr) * 2020-03-02 2021-09-03 Sodeva Tds Système de découpe ultrasonore
EP3875233A1 (de) * 2020-03-02 2021-09-08 Sodeva Tds Ultraschall-schneidesystem

Also Published As

Publication number Publication date
FR3030316A1 (fr) 2016-06-24
FR3030316B1 (fr) 2017-02-03

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