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WO2000029178A1 - Ultrasonic cutting device - Google Patents

Ultrasonic cutting device Download PDF

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Publication number
WO2000029178A1
WO2000029178A1 PCT/EP1999/009742 EP9909742W WO0029178A1 WO 2000029178 A1 WO2000029178 A1 WO 2000029178A1 EP 9909742 W EP9909742 W EP 9909742W WO 0029178 A1 WO0029178 A1 WO 0029178A1
Authority
WO
WIPO (PCT)
Prior art keywords
horn
vibration
cutting
cutting tool
cutting device
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.)
Ceased
Application number
PCT/EP1999/009742
Other languages
German (de)
French (fr)
Inventor
Harald Hielscher
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.)
Dr Hielscher GmbH
Original Assignee
Dr Hielscher GmbH
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 Dr Hielscher GmbH filed Critical Dr Hielscher GmbH
Publication of WO2000029178A1 publication Critical patent/WO2000029178A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B06B3/02—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving a change of amplitude
    • 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

Definitions

  • the invention relates to an ultrasound cutting device for cutting materials of different types by means of ultrasound according to the preamble of claim 1.
  • an ultrasound transducer ( ⁇ / 2 oscillator), which converts the electrical energy introduced into mechanical vibrations, and a sonotrode or a horn are used in principle.
  • the sonotrode or in this case the horn, is to be regarded as a tool via which the ultrasound power is directed to the site of action.
  • the ultrasonic power from an ultrasonic transducer ( ⁇ / 2 transducer) is introduced into the cutting tool via a horn.
  • the cutting tool is clamped in the area of the maximum vibration of the horn.
  • the longitudinal vibrations transmitted into the cutting tool cause the cutting edge to vibrate and thus the cutting process.
  • the known ultrasonic cutting devices are due to the freely oscillating one cutting side mechanically very unstable and are only suitable for cutting thin materials.
  • the invention is therefore based on the object of developing a generic ultrasound cutting device with which the shortcomings of the known devices are avoided and with which it is ensured that materials of different types can be cut reliably and effectively.
  • the cutting tool of the cutting device according to the invention is clamped on one side in the area of the maximum vibration of the horn of the ⁇ / 2 vibrator and on the other side in a vibration-decoupled counter bearing, the horn being mechanically supported in the area of the vibration node.
  • the vibration-decoupled counter bearing consists of a ⁇ / 2 hom with a mechanical bearing in the area of the vibration node and a clamping point for the cutting tool in the area of the vibration maximum, with the ⁇ / 2 horn as the counter bearing having the same resonance frequency as the ⁇ / 2 hearing of the Has ultrasonic transducer.
  • the mechanically very stable mounting and clamping of the cutting tool suspended in the horn opens up areas of application which hitherto were not possible to cut with ultrasound because of inadequate cutting width due to the instability of the cutting tool, or only with unsatisfactorily high expenditure and unsatisfactorily Result were accessible.
  • the length of the cutting tool can be varied in sections of size ⁇ / 2 according to user requirements.
  • the invention will be explained in more detail below with reference to a drawing using an exemplary embodiment of a cutting device.
  • the single figure shows the schematic side view of an ultrasonic cutting device with a clamped blade.
  • an ultrasound transducer 1 with a horn 2 both designed as ⁇ / 2 oscillators, is shown schematically.
  • the horn 2 has a sudden change in cross-section relative to the transducer 1.
  • the horn 2 is mechanically stable.
  • the cutting tool 5 can have different designs.
  • the ultrasound power is directed to the cutting tool 5 via the horn 2, which acts as an amplitude transformer. Due to the cutting tool 5 excited to ultrasonic vibrations in the longitudinal direction 6, a cutting process is brought about in that during a short fraction of the oscillation period the material to be cut and the cutting tool 5 are in frictional engagement and material is removed.
  • a vibration-decoupled counter bearing 7 is arranged at the other end, which also consists of a horn designed as a ⁇ / 2 oscillator and is mechanically stable in the region of its oscillation node 8. The cutting tool 5 is clamped in the area of the maximum vibration 9 of the counter bearing 7.
  • the cutting tool 5 is mechanically very stably supported and tensioned and can withstand high loads.
  • the counter bearing 7 is operated at the resonance frequency of the horn 2 of the transducer 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

The invention relates to an ultrasonic cutting device which is fixed in the range of the maximum of oscillation (4) of the horn (2) ( lambda /2 oscillator) of the ultrasonic transducer (1). Said horn (2) of the ultrasonic transducer (1) is mechanically mounted in the area of the oscillation node (3). The cutting device (5) is fixed at the other end in an oscillation-decoupled counter-support (7) having the frequency of resonance of the horn (2) of the ultrasonic transducer in the area of the maximum of oscillation (9). The counter-support (7) is mechanically mounted in the area of the oscillation node (8).

Description

Ultraschall -Schneideinrichtung Ultrasonic cutting device

Beschreibungdescription

Die Erfindung betrifft eine Ultraschall-Schneideinrichtung zum Schneiden von Materialien unterschiedlicher Art mittels Ultraschall gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an ultrasound cutting device for cutting materials of different types by means of ultrasound according to the preamble of claim 1.

Um Ultraschall zu erzeugen und in ein Medium mit einer gewünschten Leistung einzubringen, werden prinzipiell ein Ultraschall -Wandler (λ/2 -Schwinger) , der die eingebrachte elektrische Energie in mechanische Schwingungen umwandelt, und eine Sonotrode bzw. ein Hörn verwendet.In order to generate ultrasound and to introduce it into a medium with a desired output, an ultrasound transducer (λ / 2 oscillator), which converts the electrical energy introduced into mechanical vibrations, and a sonotrode or a horn are used in principle.

Die Sonotrode oder in diesem Falle das Hörn sind als ein Werkzeug anzusehen, über das die Ultraschall- Leistung an den Wirkungsort geleitet wird.The sonotrode, or in this case the horn, is to be regarded as a tool via which the ultrasound power is directed to the site of action.

Nach dem allgemeinen Stand der Technik wird die Ultraschall-Leistung aus einem Ultraschallwandler (λ/2- Schwinger) über ein Hörn in das Schneidwerkzeug eingebracht . Das Schneidwerkzeug ist dabei im Bereich des Schwingungsmaximums des Horns eingespannt. Die in das Schneidwerkzeug übertragenen LängsSchwingungen bewirken eine Vibration der Schneide und damit den Schneidvorgang.According to the general state of the art, the ultrasonic power from an ultrasonic transducer (λ / 2 transducer) is introduced into the cutting tool via a horn. The cutting tool is clamped in the area of the maximum vibration of the horn. The longitudinal vibrations transmitted into the cutting tool cause the cutting edge to vibrate and thus the cutting process.

Die bekannten Ultraschall-Schneideinrichtungen sind in- folge der frei schwingenden einen Schneidenseite mechanisch sehr instabil und eignen sich nur zum Schneiden dünner Materialien.The known ultrasonic cutting devices are due to the freely oscillating one cutting side mechanically very unstable and are only suitable for cutting thin materials.

Der Erfindung liegt daher die Aufgabe zugrunde, eine gattungsgemäße Ultraschall-Schneideinrichtung zu entwickeln, mit der die Mängel der bekannten Einrichtungen vermieden werden und mit der gewährleistet ist, daß Materialien unterschiedlicher Art zuverlässig und effektiv geschnitten werden können.The invention is therefore based on the object of developing a generic ultrasound cutting device with which the shortcomings of the known devices are avoided and with which it is ensured that materials of different types can be cut reliably and effectively.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst . Das Schneidwerkzeug der Schneideinrichtung nach der Erfindung ist auf der einen Seite im Bereich des Schwingungsmaximums des Horns des λ/2 -Schwingers und auf der anderen Seite in ein schwin- gungsentkoppeltes Gegenlager eingespannt, wobei das Hörn im Bereich des Schwingungsknotens mechanisch gelagert ist . Das schwingungsentkoppelte Gegenlager besteht aus einem λ/2 -Hom mit einer mechanischen Lagerung im Bereich des Schwingungsknotens und einer Einspannstelle für das Schneidwerkzeug im Bereich des Schwingungsmaximums, wobei das λ/2 -Hörn als Gegenlager die gleiche Resonanzfrequenz wie das λ/2 -Hörn des Ultraschallwandlers aufweist.According to the invention, this object is achieved by the features of claim 1. The cutting tool of the cutting device according to the invention is clamped on one side in the area of the maximum vibration of the horn of the λ / 2 vibrator and on the other side in a vibration-decoupled counter bearing, the horn being mechanically supported in the area of the vibration node. The vibration-decoupled counter bearing consists of a λ / 2 hom with a mechanical bearing in the area of the vibration node and a clamping point for the cutting tool in the area of the vibration maximum, with the λ / 2 horn as the counter bearing having the same resonance frequency as the λ / 2 hearing of the Has ultrasonic transducer.

Es werden mit der Schneideinrichtung nach der Erfindung durch die mechanisch sehr stabile Lagerung und Ein- spannung des im Hörn aufgehangenen Schneidwerkzeuges Anwendungsbereiche erschlossen, die bisher einem Schneiden mit Ultraschall wegen unzureichender Schneidenbreite infolge der Instabilität des Schneidwerkzeuges nicht oder nur mit unbefriedigend hohem Aufwand und wenig zufriedenstellendem Ergebnis zugänglich waren. Das Schneidwerkzeug kann in der Länge in Abschnitten der Größe λ/2 den Anwenderbedürfnissen entsprechend variiert werden.With the cutting device according to the invention, the mechanically very stable mounting and clamping of the cutting tool suspended in the horn opens up areas of application which hitherto were not possible to cut with ultrasound because of inadequate cutting width due to the instability of the cutting tool, or only with unsatisfactorily high expenditure and unsatisfactorily Result were accessible. The length of the cutting tool can be varied in sections of size λ / 2 according to user requirements.

Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous developments of the invention result from the subclaims.

Die Erfindung soll nachstehend anhand einer Zeichnung an einem Ausführungsbeispiel einer Schneideinrichtung näher erläutert werden. Die einzige Figur zeigt die schematische Seitenansicht einer Ultraschall- Schneideinrichtung mit einer eingespannten Klinge.The invention will be explained in more detail below with reference to a drawing using an exemplary embodiment of a cutting device. The single figure shows the schematic side view of an ultrasonic cutting device with a clamped blade.

In der Figur ist ein Ultraschallwandler 1 mit einem Hörn 2, beide als λ/2 -Schwinger ausgeführt, schematisch dargestellt . Das Hörn 2 weist eine zum Wandler 1 sprunghafte Querschnittsänderung auf . Im Bereich des Schwingungsknotens 3 ist das Hörn 2 mechanisch stabil gelagert . Im Bereich des Schwingungsmaximums 4 des Horns 2 ist ein Schneidwerkzeug 5, hier eine Schneide, eingespannt .In the figure, an ultrasound transducer 1 with a horn 2, both designed as λ / 2 oscillators, is shown schematically. The horn 2 has a sudden change in cross-section relative to the transducer 1. In the area of the vibration node 3, the horn 2 is mechanically stable. A cutting tool 5, here a cutting edge, is clamped in the area of the maximum vibration 4 of the horn 2.

Das Schneidwerkzeug 5 kann unterschiedliche Ausführungen aufweisen.The cutting tool 5 can have different designs.

Die Ultraschall-Leistung wird über das Hörn 2, welches als Amplitudentransformator wirkt, an das Schneidwerkzeug 5 geleitet. Durch das zu Ultraschall- Schwingungen in Längsrichtung 6 erregte Schneidwerkzeug 5 wird ein Schneidvorgang dadurch bewirkt, daß während eines kurzen Bruchteils der Schwingungsperiode sich das zu schneidende Material und das Schneidwerkzeug 5 in kraftschlüssigem Eingriff befinden und Material abgetragen wird. Zur Stabilisierung des Schneidwerkzeuges 5 ist am anderen Ende ein schwingungsentkoppeltes Gegenlager 7 angeordnet, welches ebenfalls aus einem als λ/2- Schwinger ausgebildeten Hörn besteht und im Bereich seines Schwingungsknotens 8 mechanisch stabil gelagert ist. Das Schneidwerkzeug 5 ist im Bereich des Schwingungsmaximums 9 des Gegenlagers 7 eingespannt .The ultrasound power is directed to the cutting tool 5 via the horn 2, which acts as an amplitude transformer. Due to the cutting tool 5 excited to ultrasonic vibrations in the longitudinal direction 6, a cutting process is brought about in that during a short fraction of the oscillation period the material to be cut and the cutting tool 5 are in frictional engagement and material is removed. To stabilize the cutting tool 5, a vibration-decoupled counter bearing 7 is arranged at the other end, which also consists of a horn designed as a λ / 2 oscillator and is mechanically stable in the region of its oscillation node 8. The cutting tool 5 is clamped in the area of the maximum vibration 9 of the counter bearing 7.

Das Schneidwerkzeug 5 ist dadurch mechanisch sehr sta- bil gelagert und gespannt und hoch belastbar.As a result, the cutting tool 5 is mechanically very stably supported and tensioned and can withstand high loads.

Das Gegenlager 7 wird mit der Resonanzfrequenz des Horns 2 des Wandlers 1 betrieben.The counter bearing 7 is operated at the resonance frequency of the horn 2 of the transducer 1.

Die Erfindung ist nicht auf das hier beschriebene Aus- führungsbeispiel beschränkt. Vielmehr ist es möglich, durch Kombination und Modifikation der beschriebenen Merkmale weitere Ausführungsvarianten zu realisieren, ohne den Rahmen der Erfindung zu verlassen. The invention is not restricted to the exemplary embodiment described here. Rather, it is possible to implement and implement further embodiment variants by combining and modifying the features described, without leaving the scope of the invention.

Ultraschall -SchneideinrichtungUltrasonic cutting device

BezugszeichenlisteReference list

Ultraschallwandler Hörn Schwingungsknoten Schwingungsmaximum Schneidwerkzeug Längsrichtung Gegenlager Schwingungsknoten Schwingungsmaximum Ultrasound transducer Hörn vibration node vibration maximum cutting tool longitudinal direction counter bearing vibration node vibration maximum

Claims

Patentansprüche claims 1. Ultraschall -Schneideinrichtung zum Schneiden von unterschiedlichen Materialien mittels eines durch Ultraschall angeregten Schneidwerkzeuges (5) , welches im Bereich des Schwingungsmaximums (4) des Horns (2) (λ/2 -Schwinger) des Ultraschallwandlers1. Ultrasonic cutting device for cutting different materials by means of a cutting tool (5) excited by ultrasound, which in the area of the maximum vibration (4) of the horn (2) (λ / 2 oscillator) of the ultrasonic transducer (1) eingespannt ist, wobei das Hörn (2) des Ultraschallwandlers (1) im Bereich des Schwingungs- knotens (3) mechanisch gelagert ist, d a d u r c h g e k e n n z e i c h n e t, daß das Schneidwerkzeug (5) auf der anderen Seite in ein als λ/2 -Schwinger ausgebildetes schwingungs- entkoppeltes Gegenlager (7) mit der Resonanzfrequenz des Horns (2) des Ultraschallwandlers (1) im Bereich des Schwingungsmaximums (9) eingespannt ist, wobei das Gegenlager (7) im Bereich des(1) is clamped, the horn (2) of the ultrasound transducer (1) being mechanically mounted in the area of the vibration node (3), characterized in that the cutting tool (5) on the other side into a λ / 2 oscillator formed vibration-decoupled counter bearing (7) with the resonance frequency of the horn (2) of the ultrasonic transducer (1) is clamped in the range of the vibration maximum (9), the counter bearing (7) in the range Schwingungsknotens (8) mechanisch gelagert ist.Vibration node (8) is mechanically mounted. 2. Ultraschall-Schneideinrichtung nach .Anspruch 1, dadurch gekennzeichnet, daß die Länge des Schneidwerkzeugs (5) ein Vielfaches von λ/2 beträgt . 2. Ultrasonic cutting device according to .Anspruch 1, characterized in that the length of the cutting tool (5) is a multiple of λ / 2.
PCT/EP1999/009742 1998-11-14 1999-11-12 Ultrasonic cutting device Ceased WO2000029178A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998152642 DE19852642C1 (en) 1998-11-14 1998-11-14 Ultrasonic cutting device has tool arranged at vibration maximum and end supports at vibration nodes
DE19852642.3 1998-11-14

Publications (1)

Publication Number Publication Date
WO2000029178A1 true WO2000029178A1 (en) 2000-05-25

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Application Number Title Priority Date Filing Date
PCT/EP1999/009742 Ceased WO2000029178A1 (en) 1998-11-14 1999-11-12 Ultrasonic cutting device

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DE (1) DE19852642C1 (en)
WO (1) WO2000029178A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7568251B2 (en) 2006-12-28 2009-08-04 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US7700195B2 (en) 2001-06-08 2010-04-20 Fundacao De Amparo A Pesquisa Do Estado De Sao Paulo Cutting tool and process for the formation thereof
US7735751B2 (en) 2006-01-23 2010-06-15 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7744015B2 (en) 2006-01-23 2010-06-29 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7810743B2 (en) 2006-01-23 2010-10-12 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7819335B2 (en) 2006-01-23 2010-10-26 Kimberly-Clark Worldwide, Inc. Control system and method for operating an ultrasonic liquid delivery device
US7918211B2 (en) 2006-01-23 2011-04-05 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7963458B2 (en) 2006-01-23 2011-06-21 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US8028930B2 (en) 2006-01-23 2011-10-04 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US8191732B2 (en) 2006-01-23 2012-06-05 Kimberly-Clark Worldwide, Inc. Ultrasonic waveguide pump and method of pumping liquid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10027264C5 (en) * 2000-05-31 2004-10-28 Dr. Hielscher Gmbh ultrasound transducer
DE102014225249A1 (en) * 2014-12-09 2016-06-09 Robert Bosch Gmbh Method and apparatus for cutting a ribbon in ultrasonic ribbon bonding

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US4122797A (en) * 1976-03-25 1978-10-31 Kurashiki Boseki Kabushiki Kaisha Ultrasonic sound source and method for manufacturing rectangular diaphragm of ultrasonic sound source
EP0044800A2 (en) * 1980-07-21 1982-01-27 TELSONIC AG für elektronische Entwicklung und Fabrikation Device and process for the creation and the emission of ultrasonic energy
FR2735412A1 (en) * 1995-06-19 1996-12-20 Unir Ultra Propre Nutrition In ULTRASONIC CUTTING DEVICE
JPH10202587A (en) * 1997-01-23 1998-08-04 Puroka Corp:Kk Ultrasonic cutting and device therefor

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DE19537826C1 (en) * 1995-10-11 1997-02-27 Wolf Und Partner Ingenieurbuer Cutting system excited by ultrasound, especially for cutting food
DE29601393U1 (en) * 1996-01-17 1996-04-04 Dr. Hielscher GmbH, 14532 Stahnsdorf Ultrasonic sonotrode with flange
DE29802711U1 (en) * 1998-02-17 1998-04-16 Fetzer Susanne Ultrasonic cutting tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122797A (en) * 1976-03-25 1978-10-31 Kurashiki Boseki Kabushiki Kaisha Ultrasonic sound source and method for manufacturing rectangular diaphragm of ultrasonic sound source
EP0044800A2 (en) * 1980-07-21 1982-01-27 TELSONIC AG für elektronische Entwicklung und Fabrikation Device and process for the creation and the emission of ultrasonic energy
FR2735412A1 (en) * 1995-06-19 1996-12-20 Unir Ultra Propre Nutrition In ULTRASONIC CUTTING DEVICE
JPH10202587A (en) * 1997-01-23 1998-08-04 Puroka Corp:Kk Ultrasonic cutting and device therefor

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PATENT ABSTRACTS OF JAPAN vol. 1998, no. 13 30 November 1998 (1998-11-30) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7700195B2 (en) 2001-06-08 2010-04-20 Fundacao De Amparo A Pesquisa Do Estado De Sao Paulo Cutting tool and process for the formation thereof
US7735751B2 (en) 2006-01-23 2010-06-15 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7744015B2 (en) 2006-01-23 2010-06-29 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7810743B2 (en) 2006-01-23 2010-10-12 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7819335B2 (en) 2006-01-23 2010-10-26 Kimberly-Clark Worldwide, Inc. Control system and method for operating an ultrasonic liquid delivery device
US7918211B2 (en) 2006-01-23 2011-04-05 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7963458B2 (en) 2006-01-23 2011-06-21 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US8028930B2 (en) 2006-01-23 2011-10-04 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US8191732B2 (en) 2006-01-23 2012-06-05 Kimberly-Clark Worldwide, Inc. Ultrasonic waveguide pump and method of pumping liquid
US7568251B2 (en) 2006-12-28 2009-08-04 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web

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