WO2004091841A1 - Method and device for welding or bonding with the aid of an ultrasonic sonotrode - Google Patents

Method and device for welding or bonding with the aid of an ultrasonic sonotrode Download PDF

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Publication number
WO2004091841A1
WO2004091841A1 PCT/EP2004/004087 EP2004004087W WO2004091841A1 WO 2004091841 A1 WO2004091841 A1 WO 2004091841A1 EP 2004004087 W EP2004004087 W EP 2004004087W WO 2004091841 A1 WO2004091841 A1 WO 2004091841A1
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WO
WIPO (PCT)
Prior art keywords
materials
ultrasound
sonotrode
power
actuator
Prior art date
Application number
PCT/EP2004/004087
Other languages
German (de)
French (fr)
Inventor
Harald Hielscher
Original Assignee
Dr. Hielscher Gmbh
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Publication date
Application filed by Dr. Hielscher Gmbh filed Critical Dr. Hielscher Gmbh
Publication of WO2004091841A1 publication Critical patent/WO2004091841A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
    • B29C66/92611—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/932—Measuring or controlling the joining process by measuring or controlling the speed by measuring the speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9516—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration amplitude
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/954—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the thickness of the parts to be joined

Definitions

  • the invention relates to a method and a device for welding or gluing with an ultrasonic sonotrode with the features mentioned in the preambles of claims 1 and 8.
  • DE 199 02 827 Cl describes a method for keeping constant • the average gap width between a sonotrode of an ultrasound system and a cutting tool of an ultrasound cutting device designed as a counter tool ⁇ for cutting and / or welding different materials in order to achieve a constant optimal cutting and welding quality known.
  • the contact time between the sonotrode and the Cutting tool kept constant by a control, which consists of two linked control loops.
  • the amplitude of the vibrating system is continuously corrected with a first fast control loop, as a result of which the contact time is kept constant during rapid load changes.
  • the disadvantage of this method is that there is no possibility of regulating the power input into the materials to be processed and thus a consistently high welding quality, especially in the event of changes . of the volume flow of the material cannot be guaranteed.
  • the object of the invention is to avoid the disadvantages of the known prior art and. to create a method and a device for welding or gluing with an ultrasonic sonotrode, which are characterized by a higher connection quality than previously known.
  • the inventive method for welding • or- bonding with an ultrasonic sonotrode wherein a control of the amplitude of the ultrasonic horn by means of a first high speed control loop, a control of the distance of at least one anvil for ultrasonic Sonotrode by means of a second slower control loop, activation / deactivation of the second control loop is controlled by means of a range of an amplitude specification of the first control loop and the power input of the ultrasound system, comprising the ultrasound sonotrode and at least one ultrasound transducer, is to be connected in at least two
  • the continuous measurement of materials is characterized by the fact that a power specification serves as a reference variable for the first and the second control circuit, the power input is regulated by means of the first and the second control circuit, and the power specification is formed as a function of the feed rate of the at least two materials.
  • the control loops compensate for the difference between the power specification and the measured power.
  • the fast control loop for the amplitude control higher-frequency disturbances caused by, for example, the elasticity of the system, rapid volume or temperature changes, are corrected within certain limits.
  • the second, much slower control loop is used to correct low-frequency disturbances that cannot be compensated for by means of the amplitude control, such as temperature- related or wear-related changes in distance between the sonotrode and the at least one counter bearing.
  • the inventive determination of the power specification as a function of the feed rate of the at least one material and the use of this determined power specification as a reference variable for both control loops advantageously ensures a consistently higher connection quality than previously known.
  • the power specification as a reference variable can be continuously adapted to the real feed rate, whereby a higher uniformity of the connecting seam is achieved.
  • the power specification is additionally formed as a function of at least one cross section of the at least two materials, the at least one cross section preferably being recorded continuously.
  • the width and / or the thickness of the at least one Material can be measured.
  • the performance specification is additionally formed as a function of at least one type of material of the at least two materials.
  • the type of material can be characterized in particular by technological parameters such as melting point, density, thermal conductivity, etc.
  • the distance of the at least one counter bearing is varied by means of at least one actuator, which is preferably a motor, piezo actuator, thermal actuator or the like.
  • at least one actuator which is preferably a motor, piezo actuator, thermal actuator or the like.
  • the device according to the invention for welding or gluing with an ultrasound sonotrode in which the amplitude of the ultrasound sonotrode can be regulated by means of a first fast controller of at least one control device, the distance of at least one counter-bearing to the ultrasound sonotrode by means of a second slower controller of the at least one a regulating device can be regulated, activation / deactivation of the second regulator can be controlled by means of a range of an amplitude specification of the first regulator and the power input of the ultrasound system, comprising the ultrasound sonotrode and at least one ultrasound transducer, in at least two materials to be connected by means of a Power measuring device is continuously measurable, ' is characterized in that a power specification serves as a reference variable for the first and the second controller, the power input can be regulated by means of the first and the second controller, and the power specification e can be formed as a function of the feed rate of the at least two materials.
  • the control loops compensate for the difference between the power specification and the measured power.
  • the fast controller for the amplitude control higher-frequency disturbances caused by, for example, the elasticity of the system, rapid volume or temperature changes are compensated within certain limits.
  • the second, much slower controller is used to correct low-frequency disturbances that cannot be compensated for by the amplitude control, such as temperature or wear-related changes in distance between the sonotrode and the at least one counter bearing.
  • the performance specification can additionally be formed as a function of at least one cross section of the at least two materials, the device preferably comprising at least one measuring device by means of which the at least one cross section, for example by measuring the width and / or the thickness, is continuously detectable. This advantageously results in a higher accuracy in the determination of the required power input and the detection of the
  • the performance specification can additionally be formed as a function of at least one type of material of the at least two materials. This advantageously achieves higher accuracy in determining the required energy input per volume.
  • the type of material can be characterized in particular by technological parameters such as melting point, density, thermal conductivity, etc.
  • the device comprises at least one speed measuring device, by means of which the feed speed can be measured continuously.
  • the performance specification as a reference variable can be continuously adapted to the real feed rate, as a result of which a higher uniformity of the connecting seam is achieved.
  • the distance of the at least one counter bearing can be varied by means of at least one actuator, the at least one actuator preferably being a motor, piezo actuator, thermal actuator or the like. In this way, particularly favorable possibilities of changing the spacing are advantageously achieved, which are distinguished by high accuracy and particularly simple handling and implementation.
  • the FIGURE shows an exemplary embodiment of a device 10 according to the invention for welding two or more band-shaped and / or wire-shaped and / or flat materials 30 and / or combinations thereof with an ultrasound sonotrode 12, the materials being, for example, metals, plastics, fabrics, composite materials or the like.
  • the device 10 comprises an ultrasound system 26, which is constructed from an ultrasound transducer 14, which is preferably provided with an amplitude amplifier, an ultrasound sonotrode 12 and an ultrasound control device 16, a counter bearing 24, the distance to the ultrasound sonotrode 12 with the aid of a Actuator control device 38 and a controllable actuator 36 is variable, a speed measuring device 32 for detecting the Feed speed v M as well as a measuring device 34 for detecting the cross-section 0 of the 'materials to be welded 30, a power measuring means for measuring the power input P 28 of the ultrasound system 26 in the material 30 and a controller 22 for controlling the power input st P ⁇ - Starting from Technological parameters and material characteristics of the materials 30 to be welded, such as melting point, density, thermal conductivity, etc., by means of which the energy input per volume E v required for the welding process can be determined, taking into account the feed rate v M and the cross section Q of the materials 30, a performance specification P So ⁇ continuously by means of a computing element 40, which can also be integrated
  • This power specification Ps o ii is supplied as a reference variable to the control device 22 and the controllers 18 and 20 contained therein.
  • the first, fast controller 18 serves to regulate the amplitude of the ultrasound system 26 or the ultrasound sonotrode 12, which forms the welding tool, an amplitude specification ⁇ So ⁇ being formed on the basis of the power specification Ps o ii.
  • the power input P Ist is regulated within certain limits in accordance with the power specification Ps o ii under the influence of higher-frequency interference, for example due to the elasticity of the system, rapid volume or temperature changes.

Abstract

The invention relates to a method and a device for welding or bonding with the aid of an ultrasonic sonotrode. In said device (10): the amplitude of the ultrasonic sonotrode (12) can be adjusted by means of a first rapid regulator (18) of at least one regulation device (22); the distance of at least one counter-bearing (24) from the ultrasonic sonotrode (12) can be adjusted by means of a second slower regulator (20) of the regulation device(s) (22); the activation/deactivation of the second regulator (20) can be controlled by means of a range for an amplitude default value (ATarg.) of the first regulator (18); and the energy transfer (PAct.) of the ultrasonic system (26), which comprises the ultrasonic sonotrode (12) and at least one ultrasonic transducer (14), into at least two materials (30) that are to be bonded can be continuously measured by an energy measurement device (28). The inventive device is characterised in that an energy default value (PTarg.) acts as a guide variable for the first (18) and second regulator (20), the energy transfer (PAct.) can be adjusted by means of the first (18) and second regulator (20) and the energy default value (PTarg.) can be formed in accordance with the feed speed (vM) of the two or more materials (30).

Description

Verfahren und Vorrichtung am Verschleißen oder Verkleben mit einer Ultraschall-Sonotrode Method and device for wear or gluing with an ultrasonic sonotrode
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Verschweißen oder Verkleben mit einer Ultraschall- Sonotrode mit den in den Oberbegriffen der Ansprüche 1 und 8 genannten Merkmalen.The invention relates to a method and a device for welding or gluing with an ultrasonic sonotrode with the features mentioned in the preambles of claims 1 and 8.
Bei Schweißen mit Ultraschall werden gemeinhin von einem Generator erzeugte elektrische Schwingungen einem Ultraschallwandler zugeführt und dort in mechanische Schwingungen umgesetzt. Über eine mit dem Wandler verbundene Sonotrode wird die Ultraschall-Leistung erzeugt und auf die zu bearbeitenden Materialien übertragen. Das Schweißprinzip beruht auf der Entstehung, von Wärme durch innere Reibung auf molekularer Ebene, wodurch ein Aufschmelzen von Material im Bereich der Leistungseinstrahlung erzielt wird.When welding with ultrasound, electrical vibrations generated by a generator are generally fed to an ultrasound transducer and converted there into mechanical vibrations. The ultrasound power is generated via a sonotrode connected to the transducer and transferred to the materials to be processed. The welding principle is based on the generation of heat by internal friction at the molecular level, which causes melting of material in the area of power radiation.
Zur Gewährleistung einer gleichbleibend hohen Schweißqualität ist ein konstanter Energieeintrag pro Volumen erforderlich, welcher anhand von technologischen - Parametern und Materialkennzahlen bestimmbar ist.To ensure a consistently high welding quality, a constant energy input per volume is required, which can be determined on the basis of technological parameters and material parameters.
Aus der DE 199 02 827 Cl ist ein Verfahren zum Konstanthalten • der mittleren Spaltbreite zwischen einer Sonotrode eines Ultraschall-Systems und einem als Gegenwerkzeug ausgebildeten Schneidwerkzeug einer Ultraschall-Schneideinrichtung ■ zum Schneiden und/oder Verschweißen von unterschiedlichen Materialien zur Erlangung einer gleichbleibenden optimalen Schneid- und Schweißqualität bekannt. Bei diesem Verfahren wird die Berührungszeit zwischen der Sonotrode und dem Schneidwerkzeug mittels einer Regelung konstant gehalten, welche aus zwei miteinander verknüpften Regelkreisen besteht. Mit einem ersten schnellen Regelkreis wird kontinuierlich die Amplitude des schwingenden Systems korrigiert, wodurch die Berührungszeit bei schnellen Lastwechseln konstant gehalten wird. Mit einem zweiten langsameren Regelkreis, dessen Regelzeit schneller als die Temperaturänderung des Systems ist, werden thermisch bedingte und verschleißbedingte Abstandsänderungen zwischen dem Werkzeug und der Sonotrode kompensiert, welche aufgrund ihrer zu erwartenden • Größe nicht mehr von der Amplitudenregelung kompensierbar sind.DE 199 02 827 Cl describes a method for keeping constant • the average gap width between a sonotrode of an ultrasound system and a cutting tool of an ultrasound cutting device designed as a counter tool ■ for cutting and / or welding different materials in order to achieve a constant optimal cutting and welding quality known. In this method, the contact time between the sonotrode and the Cutting tool kept constant by a control, which consists of two linked control loops. The amplitude of the vibrating system is continuously corrected with a first fast control loop, as a result of which the contact time is kept constant during rapid load changes. With a second slower control loop, the control time of which is faster than the temperature change of the system, thermal and wear-related changes in distance between the tool and the sonotrode are compensated, which due to their expected size • can no longer be compensated for by the amplitude control.
Nachteilig bei diesem Verfahren ist, dass keine Möglichkeit zur Regelung des Leistungseintrags in die zu bearbeitenden Materialien besteht und somit eine gleichbleibend hohe Schweißqualität insbesondere bei Änderungen . des Volumenstroms des Materials nicht gewährleistet werden kann.The disadvantage of this method is that there is no possibility of regulating the power input into the materials to be processed and thus a consistently high welding quality, especially in the event of changes . of the volume flow of the material cannot be guaranteed.
Die Aufgabe der Erfindung besteht darin, die Nachteile des bekannten Standes der Technik zu vermeiden und. ein Verfahren und eine Vorrichtung zum Verschweißen oder Verkleben mit einer Ultraschall-Sonotrode zu schaffen, welche sich durch eine höhere Verbindungsqualität als bisher bekannt auszeichnen.The object of the invention is to avoid the disadvantages of the known prior art and. to create a method and a device for welding or gluing with an ultrasonic sonotrode, which are characterized by a higher connection quality than previously known.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren mit den in Anspruch 1 genannten Merkmalen und eine Vorrichtung mit den in Anspruch 8 genannten Merkmalen gelöst. Das erfindungsgemäße Verfahren zum • Verschweißen oder- Verkleben mit einer Ultraschall-Sonotrode, bei welchem eine Regelung der Amplitude der Ultraschall-Sonotrode mittels eines ersten schnellen Regelkreises erfolgt, eine Regelung des Abstandes wenigstens eines Gegenlagers zur Ultraschall- Sonotrode mittels eines zweiten langsameren Regelkreises erfolgt, eine Aktivierung/Deaktivierung des zweiten Regelkreises mittels eines Bereiches einer Amplitudenvorgabe des ersten Regelkreises gesteuert wird und der Leistungseintrag des Ultraschall-Systems, umfassend die Ultraschall-Sonotrode und wenigstens einen Ultraschall- Wandler, in wenigstens zwei zu verbindende Materialien kontinuierlich gemessen wird, zeichnet sich dadurch aus, dass eine Leistungsvorgabe als Führungsgröße für den ersten und den zweiten Regelkreis dient, der Leistungseintrag mittels des ersten und des zweiten Regelkreises geregelt wird und die Leistungsvorgabe in Abhängigkeit von der Vorschubgeschwindigkeit der wenigstens zwei Materialien gebildet wird. Durch die Regelkreise wird die Differenz zwischen der Leistungsvorgabe und der gemessenen Leistung ausgeregelt. Mittels des schnellen Regelkreises für die Amplitudenregelung werden höherfrequente Störungen, bedingt durch beispielsweise die Elastizität des Systems, schnelle Volumen- oder Temperaturänderungen, in bestimmten Grenzen ausgeregelt. Der zweite, wesentlich langsamere Regelkreis dient zum Ausregeln tieffrequenter Störungen, die mittels der Amplitudenregelung nicht kompensiert werden können, wie beispielsweise temperatur- ' oder verschleißbedingte Abstandsänderungen zwischen Sonotrode und dem wenigstens einen Gegenlager. Durch die erfindungsgemäße Bestimmung der Leistungsvorgabe in Abhängigkeit ,von der Vorschubgeschwindigkeit des wenigstens einen Materials und die Verwendung dieser ermittelten Leistungsvorgabe als Führungsgröße für beide Regelkreise wird vorteilhaft eine gleichbleibend höhere Verbindungsqualität als bisher bekannt gewährleistet. Durch eine vorzugsweise kontinuierliche Messung der Vorschubgeschwindigkeit ist die Leistungsvorgabe als Führungsgröße kontinuierlich der realen Vorschubgeschwindigkeit anpassbar, wodurch eine höhere Gleichmäßigkeit der Verbindungsnaht erreicht wird. Im Rahmen des erfindungsgemäßen Verfahrens ist bevorzugt vorgesehen, dass die Leistungsvorgabe zusätzlich in Abhängigkeit von wenigstens einem Querschnitt der wenigstens zwei Materialien gebildet wird, wobei der wenigstens eine Querschnitt vorzugsweise kontinuierlich erfasst wird.. Hierzu kann beispielsweise die Breite und/oder die Dicke des wenigstens einen Materials gemessen werden. Hierdurch wird vorteilhaft eine höhere Genauigkeit in der Bestimmung des erforderlichen Leistungseintrags und der Erfassung der realen. Materialvolumina erzielt, wodurch eine höhere Gleichmäßigkeit der Verbindungsnaht erzielt wird. Die Erfassung kann beispielsweise opto-elektronisch, mechanisch, kapazitiv, induktiv oder dergleichen erfolgen.This object is achieved according to the invention by a method with the features mentioned in claim 1 and a device with the features mentioned in claim 8. The inventive method for welding • or- bonding with an ultrasonic sonotrode, wherein a control of the amplitude of the ultrasonic horn by means of a first high speed control loop, a control of the distance of at least one anvil for ultrasonic Sonotrode by means of a second slower control loop, activation / deactivation of the second control loop is controlled by means of a range of an amplitude specification of the first control loop and the power input of the ultrasound system, comprising the ultrasound sonotrode and at least one ultrasound transducer, is to be connected in at least two The continuous measurement of materials is characterized by the fact that a power specification serves as a reference variable for the first and the second control circuit, the power input is regulated by means of the first and the second control circuit, and the power specification is formed as a function of the feed rate of the at least two materials. The control loops compensate for the difference between the power specification and the measured power. Using the fast control loop for the amplitude control, higher-frequency disturbances caused by, for example, the elasticity of the system, rapid volume or temperature changes, are corrected within certain limits. The second, much slower control loop is used to correct low-frequency disturbances that cannot be compensated for by means of the amplitude control, such as temperature- related or wear-related changes in distance between the sonotrode and the at least one counter bearing. The inventive determination of the power specification as a function of the feed rate of the at least one material and the use of this determined power specification as a reference variable for both control loops advantageously ensures a consistently higher connection quality than previously known. Through a preferably continuous measurement of the feed rate, the power specification as a reference variable can be continuously adapted to the real feed rate, whereby a higher uniformity of the connecting seam is achieved. Within the scope of the method according to the invention, it is preferably provided that the power specification is additionally formed as a function of at least one cross section of the at least two materials, the at least one cross section preferably being recorded continuously. For this purpose, for example, the width and / or the thickness of the at least one Material can be measured. As a result, a higher accuracy in determining the required power input and recording the real one is advantageous. Material volumes achieved, whereby a higher uniformity of the connecting seam is achieved. The detection can take place, for example, opto-electronically, mechanically, capacitively, inductively or the like.
Ferner ist im Rahmen des erfindungsgemäßen Verfahrens bevorzugt vorgesehen, dass die Leistungsvorgabe zusätzlich in Abhängigkeit von wenigstens einer Materialart der wenigstens zwei Materialien gebildet wird. Hierdurch wird vorteilhaft eine höhere Genauigkeit in der Bestimmung des erforderlichen Energieeintrags pro Volumen erzielt. Die Materialart ist insbesondere durch technologische Parameter wie Schmelzpunkt, Dichte, Wärmeleitfähigkeit etc. charakterisierbar .Furthermore, it is preferably provided in the context of the method according to the invention that the performance specification is additionally formed as a function of at least one type of material of the at least two materials. This advantageously achieves higher accuracy in determining the required energy input per volume. The type of material can be characterized in particular by technological parameters such as melting point, density, thermal conductivity, etc.
Darüber hinaus ist im Rahmen des erfindungsgemäßen Verfahrens bevprzugt vorgesehen, dass der Abstand des wenigstens einen Gegenlagers mittels wenigstens eines Aktuators variiert wird, welcher vorzugsweise ein Motor, Piezoaktuator, thermischer Aktuator oder dergleichen ist. Hierdurch' werden vorteilhaft besonders günstige Möglichkeiten der Abstandsänderung erzielt, welche sich durch hohe Genauigkeit und besonders einfache Handhabbarkeit auszeichnen. Die erfindungsgemäße Vorrichtung zum Verschweißen oder Verkleben mit einer Ultraschall-Sonotrode, bei welcher die Amplitude der Ultraschall-Sonotrode mittels eines ersten schnellen Reglers wenigstens einer Regeleinrichtung regel- bar ist, der Abstand wenigstens eines Gegenlagers zur Ultraschall-Sonotrode mittels eines zweiten langsameren Reglers der wenigstens einen Regeleinrichtung regelbar ist, eine Aktivierung/Deaktivierung des zweiten Reglers mittels eines Bereiches einer Amplitudenvorgabe des ersten Reglers steuerbar ist und der Leistungseintrag des Ultraschall- Systems, umfassend die Ultraschall-Sonotrode und wenigstens einen Ultraschall-Wandler, in wenigstens zwei zu verbindende Materialien mittels einer Leistungsmesseinrichtung kontinuierlich messbar ist, ' zeichnet sich dadurch aus, dass eine Leistungsvorgabe als Führungsgröße für den ersten und den zweiten Regler dient, der Leistungseintrag mittels des ersten und des zweiten Reglers regelbar ist und die Leistungsvorgabe in Abhängigkeit von der Vorschubgeschwindigkeit der wenigstens zwei Materialien bildbar ist. Durch die Regelkreise wird die Differenz zwischen der Leistungsvorgabe und der gemessenen Leistung ausgeregelt. Mittels des schnellen Reglers für die Amplitudenregelung werden hö- herfrequente Störungen, bedingt durch beispielsweise die Elastizität des Systems, schnelle Volumen- oder Temperatur- änderungen, in bestimmten Grenzen kompensiert. Der zweite, wesentlich langsamere Regler dient zum Ausregeln tief- frequenter Störungen, die mittels der Amplitudenregelung nicht kompensiert werden können, wie beispielsweise tempe- ratur- oder verschleißbedingte Abstandsänderungen zwischen Sonotrode und dem wenigstens einen Gegenlager. Durch die erfindungsgemäße Bestimmung der Leistungsvorgabe in Abhängigkeit von der Vorschubgeschwindigkeit der wenigstens zwei Materialien und die Verwendung dieser ermittelten Leistungsvorgabe als Führungsgröße für beide Regelkreise wird vorteilhaft eine gleichbleibend höhere Verbindungsqüa- lität als bisher bekannt gewährleistet.Furthermore, it is preferably provided in the context of the method according to the invention that the distance of the at least one counter bearing is varied by means of at least one actuator, which is preferably a motor, piezo actuator, thermal actuator or the like. In this way, particularly favorable possibilities of changing the distance are advantageously achieved, which are distinguished by high accuracy and particularly easy handling. The device according to the invention for welding or gluing with an ultrasound sonotrode, in which the amplitude of the ultrasound sonotrode can be regulated by means of a first fast controller of at least one control device, the distance of at least one counter-bearing to the ultrasound sonotrode by means of a second slower controller of the at least one a regulating device can be regulated, activation / deactivation of the second regulator can be controlled by means of a range of an amplitude specification of the first regulator and the power input of the ultrasound system, comprising the ultrasound sonotrode and at least one ultrasound transducer, in at least two materials to be connected by means of a Power measuring device is continuously measurable, ' is characterized in that a power specification serves as a reference variable for the first and the second controller, the power input can be regulated by means of the first and the second controller, and the power specification e can be formed as a function of the feed rate of the at least two materials. The control loops compensate for the difference between the power specification and the measured power. Using the fast controller for the amplitude control, higher-frequency disturbances caused by, for example, the elasticity of the system, rapid volume or temperature changes are compensated within certain limits. The second, much slower controller is used to correct low-frequency disturbances that cannot be compensated for by the amplitude control, such as temperature or wear-related changes in distance between the sonotrode and the at least one counter bearing. By determining the power specification according to the invention as a function of the feed rate of the at least two materials and using this determined power specification as a reference variable for both control loops a consistently higher connection quality than previously known is advantageously guaranteed.
In einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die Leistungsvorgabe zusätzlich in Abhängigkeit von wenigstens einem Querschnitt der wenigstens zwei Materialien bildbar ist, wobei die Vorrichtung vorzugsweise wenigstens eine Messeinrichtung umfasst, mittels derer der wenigstens eine Querschnitt, beispielsweise durch Messung der Breite und/oder der Dicke, kontinuierlich erfassbar ist. Hierdurch wird vorteilhaft eine höhere Genauigkeit in der Bestimmung des erforderlichen Leistungseintrags und der Erfassung derIn a preferred embodiment of the invention it is provided that the performance specification can additionally be formed as a function of at least one cross section of the at least two materials, the device preferably comprising at least one measuring device by means of which the at least one cross section, for example by measuring the width and / or the thickness, is continuously detectable. This advantageously results in a higher accuracy in the determination of the required power input and the detection of the
■ realen Materialvolumina erzielt, wodurch eine höhere Gleichmäßigkeit der Schweißnaht erzielt wird. Die Erfassung kann beispielsweise opto-elektronisch, mechanisch, kapazitiv, induktiv oder dergleichen erfolgen. ■ Real material volumes achieved, whereby a higher uniformity of the weld seam is achieved. The detection can take place, for example, opto-electronically, mechanically, capacitively, inductively or the like.
Ferner ist in einer bevorzugten Ausgestaltung der Erfindung vorgesehen, dass die Leistungsvorgabe zusätzlich in Abhängigkeit von wenigstens einer Materialart der wenigstens zwei Materialien bildbar ist. Hierdurch wird vorteilhaft eine höhere Genauigkeit in der Bestimmung des erforderlichen Energieeintrags pro Volumen erzielt. Die Materialart ist insbesondere durch technologische Parameter wie Schmelzpunkt, Dichte, Wärmeleitfähigkeit etc. charakterisierbar .Furthermore, it is provided in a preferred embodiment of the invention that the performance specification can additionally be formed as a function of at least one type of material of the at least two materials. This advantageously achieves higher accuracy in determining the required energy input per volume. The type of material can be characterized in particular by technological parameters such as melting point, density, thermal conductivity, etc.
Darüber hinaus ist in einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die Vorrichtung wenigstens eine Geschwindigkeitsmesseinrichtung umfasst, mittels derer die Vorschubgeschwindigkeit kontinuierlich messbar ist. Hierdurch wird vorteilhaft erreicht, dass die Leistungsvorgabe als Führungsgröße kontinuierlich der realen Vorschubgeschwindigkeit anpassbar ist, wodurch eine höhere Gleichmäßigkeit der Verbindungsnaht erreicht wird. Schließlich ist in einer bevorzugten Ausgestaltung der Erfindung vorgesehen, dass das der Abstand des wenigstens einen Gegenlagers mittels wenigstens eines Aktuators variierbar ist, wobei der wenigstens eine Aktuator vorzugsweise ein Motor, Piezoaktuator, thermischer Aktuator oder dergleichen ist. Hierdurch werden vorteilhaft besonders günstige Möglichkeiten der Äbstandsänderung erzielt, welche sich durch hohe Genauigkeit und besonders einfache Handhabbarkeit und Realisierbarkeit auszeichnen.In addition, it is provided in a preferred embodiment of the invention that the device comprises at least one speed measuring device, by means of which the feed speed can be measured continuously. In this way, it is advantageously achieved that the performance specification as a reference variable can be continuously adapted to the real feed rate, as a result of which a higher uniformity of the connecting seam is achieved. Finally, it is provided in a preferred embodiment of the invention that the distance of the at least one counter bearing can be varied by means of at least one actuator, the at least one actuator preferably being a motor, piezo actuator, thermal actuator or the like. In this way, particularly favorable possibilities of changing the spacing are advantageously achieved, which are distinguished by high accuracy and particularly simple handling and implementation.
Weitere bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den übrigen, in den Unteransprüchen genannten Merkmalen.Further preferred embodiments of the invention result from the other features mentioned in the subclaims.
Die Erfindung wird nachfolgend in Ausführungsbeispielen anhand der zugehörigen Zeichnung, die eine Vorrichtung zum Verschweißen mit einer Ultraschall-Sonotrode zeigt, näher erläutert .The invention is explained in more detail below in exemplary embodiments with reference to the associated drawing, which shows a device for welding with an ultrasound sonotrode.
In der Figur ist ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung 10 zum Verschweißen zweier oder mehrerer bandförmiger und/oder drahtförmiger und/oder flächiger Materialien 30 und/oder Kombinationen daraus mit einer Ultraschall-Sonotrode 12 aufgezeigt, wobei die Materialien beispielsweise Metalle, Kunststoffe, Gewebe, Verbundwerkstoffe oder dergleichen sein können. Die Vorrichtung 10 umfasst ein Ultraschall-System 26, welches aus einem Ultraschallwandler 14, welcher vorzugsweise mit einem Amplitudenverstärker versehen wird, einer Ultraschall-Sonotrode 12 und einer Ultraschallsteuereinrichtung 16 aufgebaut ist, ein Gegenlager 24, dessen Abstand zur Ultraschall-Sonotrode 12 mit Hilfe einer Aktuatorsteuereinrichtung 38 und eines steuerbaren Aktuators 36 variierbar ist, eine Geschwindigkeitsmesseinrichtung 32 zur Erfassung der Vorschubgeschwindigkeit vM sowie eine Meßeinrichtung 34 zur Erfassung des Querschnitts 0 der ' zu verschweißenden Materialien 30, eine Leistungsmesseinrichtung 28 zur Messung des Leistungseintrags PIst des Ultraschall-Systems 26 in die Materialien 30 und eine Regeleinrichtung 22 zur Regelung des Leistungseintrags Pιst- Ausgehend von technologischen Parametern und Materialkennzahlen der zu verschweißenden Materialien 30 wie beispielsweise Schmelzpunkt, Dichte, Wärmeleitfähigkeit etc., durch welche der für den Schweißvorgang benötigte Energieeintrag pro Volumen Ev ermittelbar ist, wird unter Berücksichtigung der Vorschubgeschwindigkeit vM und des Querschnitts Q der Materialien 30 eine Leistungsvorgabe PSoιι kontinuierlich mittels eines Rechengliedes 40, welches auch in die Regeleinrichtung 22 integriert sein kann, ' bestimmt. Diese Leistungsvorgabe Psoii wird als Führungsgröße der Regeleinrichtung 22 und den darin enthaltenen Reglern 18 und 20 zugeführt. Der erste, schnelle Regler 18 dient der Regelung der Amplitude des Ultraschall-Systems 26 bzw. der Ultraschall-Sonotrode 12, welche das Schweißwerkzeug bildet, wobei anhand der Leistungsvorgabe Psoii eine Amplitudenvorgabe ÄSoιι gebildet wird. Auf diese Weise wird der Leistungseintrag PIst entsprechend Leistungsvörgabe Psoii unter dem Einfluß höherfrequenter Störungen, bedingt durch beispielsweise die Elastizität des Systems, schnelle Volumen- oder Temperaturänderungen, in bestimmten Grenzen geregelt. Mittels des zweiten langsameren Reglers 20 werden Störungen ausgeregelt, welche mittels der Amplitudenregelung nicht mehr ausregelbar sind, wie beispielsweise temperatur- und verschleißbedingte Änderungen des Abstands zwischen Ultraschall-Sonotrode 12 und Gegenlager 24. Somit wird der Abstand mittels Nachführen des Gegenlagers 24 mit Hilfe des Aktuators 36 entsprechend der Leistungsvorgabe PSoιι durch senden eines entsprechenden Korrektursignals vÄ an die Aktuatorsteuereinrichtung 38 korrigiert und der Leistungseintrag auf diese Weise geregelt. Eine Rückkopplung erfolgt über den gemessenen Leistungseintrag Pist- Eine Aktivierung bzw. Deaktivierung des zweiten Regelkreises erfolgt bei Verlassen des Wirkungsbereiches der Amplitudenregelung bzw. bei Eintreten in deren Wirkungsbereich. Durch den Einbezug der Vorschubgeschwindigkeit vM, des Querschnitts Q und der Art der zu verschweißenden Materialien 30 in die Berechnung der Leistungsvorgabe Psoii und die Verwendung der Leistungsvorgabe PSoll als Führungsgröße für beide Regelkreise wird eine gleichmäßigere Schweißnaht und somit eine gleichbleibend höhere Schweißqualität als bisher bekannt erzielt. The FIGURE shows an exemplary embodiment of a device 10 according to the invention for welding two or more band-shaped and / or wire-shaped and / or flat materials 30 and / or combinations thereof with an ultrasound sonotrode 12, the materials being, for example, metals, plastics, fabrics, composite materials or the like. The device 10 comprises an ultrasound system 26, which is constructed from an ultrasound transducer 14, which is preferably provided with an amplitude amplifier, an ultrasound sonotrode 12 and an ultrasound control device 16, a counter bearing 24, the distance to the ultrasound sonotrode 12 with the aid of a Actuator control device 38 and a controllable actuator 36 is variable, a speed measuring device 32 for detecting the Feed speed v M as well as a measuring device 34 for detecting the cross-section 0 of the 'materials to be welded 30, a power measuring means for measuring the power input P 28 of the ultrasound system 26 in the material 30 and a controller 22 for controlling the power input st Pι - Starting from Technological parameters and material characteristics of the materials 30 to be welded, such as melting point, density, thermal conductivity, etc., by means of which the energy input per volume E v required for the welding process can be determined, taking into account the feed rate v M and the cross section Q of the materials 30, a performance specification P So ιι continuously by means of a computing element 40, which can also be integrated in the control device 22, ' determined. This power specification Ps o ii is supplied as a reference variable to the control device 22 and the controllers 18 and 20 contained therein. The first, fast controller 18 serves to regulate the amplitude of the ultrasound system 26 or the ultrasound sonotrode 12, which forms the welding tool, an amplitude specification Ä So ιι being formed on the basis of the power specification Ps o ii. In this way, the power input P Ist is regulated within certain limits in accordance with the power specification Ps o ii under the influence of higher-frequency interference, for example due to the elasticity of the system, rapid volume or temperature changes. By means of the second slower controller 20, disturbances are corrected which can no longer be corrected by means of the amplitude control, such as temperature and wear-related changes in the distance between the ultrasound sonotrode 12 and the counter bearing 24. The distance is thus adjusted by means of the counter bearing 24 with the aid of the actuator 36 according to the performance specification P So ιι by sending a corresponding correction signal v Ä to the Corrected actuator control device 38 and regulated the power input in this way. A feedback takes place via the measured power input Pist- An activation or deactivation of the second control loop takes place when the amplitude control leaves the effective range or when it enters its effective range. By including the feed rate v M , the cross-section Q and the type of materials 30 to be welded in the calculation of the performance specification Psoii and the use of the performance specification P Soll as a reference variable for both control loops, a more uniform weld seam and thus a consistently higher welding quality than previously known achieved.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
10 Vorrichtung10 device
12 Ultraschall-Sonotrode 14 Ultraschallwandler12 ultrasonic sonotrode 14 ultrasonic transducer
16 Ultraschallsteuereinrichtung16 ultrasonic control device
18 erster Regler18 first controller
20 zweiter Regler20 second controller
22 Regeleinrichtung 24 Gegenlager22 Control device 24 counter bearing
26 Ultraschall-System26 ultrasound system
28 Leistungsmesseinrichtung28 power measuring device
30 Materialien30 materials
32 Geschwindigkeitsmesseinrichtung 34 Messeinrichtung zur Erfassung des Materialquerschnitts32 speed measuring device 34 measuring device for recording the material cross section
36 Aktuator36 actuator
38 Aktuatorsteuereinrichtung38 actuator control device
40 Rechenglied40 arithmetic element
soii Amplitudenvorgabes o ii amplitude specification
Ev Energieeintrag pro VolumenE v Energy input per volume
Pist LeistungseintragPist performance entry
Psoii Leistungsvorgabe vA Korrektursignal vM VorschubgeschwindigkeitPsoii power specification v A correction signal v M feed rate
Q Querschnitt Q cross section

Claims

Patentansprüche claims
1. Verfahren zum Verschweißen oder Verkleben mit einer Ultraschall-Sonotrode, wobei eine Regelung der Amplitude der Ultraschall-Sonotrode mittels eines ersten schnellen Regelkreises erfolgt, eine Regelung des Abstandes wenigstens eines Gegenlagers zur Ultraschall-Sonotrode mittels eines zweiten langsameren Regelkreises erfolgt, eine Aktivierung/Deaktivierung des zweiten Regelkreises mittels eines Bereiches einer Amplitudenvorgabe des ersten Regelkreises gesteuert wird und der Leistungseintrag des Ultraschall-Systems, umfassend die Ultraschall-Sonotrode und wenigstens einen Ultraschall-Wandler, in wenigstens zwei zu verbindende Materialien kontinuierlich gemessen wird, dadurch gekennzeichnet, dass eine Leistungsvorgabe als Führungsgröße für den ersten und den zweiten Regelkreis dient, der Leistungseintrag mittels des ersten und des zweiten Regelkreises geregelt wird und die Leistungsvorgabe in Abhängigkeit von der Vorschubgeschwindigkeit der wenigstens zwei Materialien gebildet wird.1. Method for welding or gluing with an ultrasound sonotrode, the amplitude of the ultrasound sonotrode being regulated by means of a first fast control loop, the distance of at least one counterpart to the ultrasound sonotrode being regulated by means of a second slower control loop, activation / Deactivation of the second control circuit is controlled by means of a range of an amplitude specification of the first control circuit and the power input of the ultrasound system, comprising the ultrasound sonotrode and at least one ultrasound transducer, is continuously measured in at least two materials to be connected, characterized in that a power specification serves as a reference variable for the first and second control loops, the power input is controlled by means of the first and second control loops, and the power specification is formed as a function of the feed rate of the at least two materials approx.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Leistungsvorgabe zusätzlich in Abhängigkeit von wenigstens einem Querschnitt der wenigstens zwei Materialien gebildet wird.2. The method according to claim 1, characterized in that the performance specification is additionally formed as a function of at least one cross section of the at least two materials.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der wenigstens eine Querschnitt kontinuierlich erfasst wird.3. The method according to claim 2, characterized in that the at least one cross section is continuously detected.
4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Leistungsvorgabe zusätzlich in Abhängigkeit von wenigstens einer Materialart der wenigstens ' zwei Materialien gebildet wird. 4. The method according to any one of the preceding claims, characterized in that the performance specification is additionally formed as a function of at least one type of material of the at least ' two materials.
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorschubgeschwindigkeit kontinuierlich gemessen wird.5. The method according to any one of the preceding claims, characterized in that the feed rate is measured continuously.
6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Abstand des wenigstens einen Gegenlagers mittels wenigstens eines Aktuators variiert wird.6. The method according to any one of the preceding claims, characterized in that the distance of the at least one counter bearing is varied by means of at least one actuator.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der wenigstens eine Aktuator ein Motor, Piezoaktuator, thermischer Aktuator oder dergleichen ist.7. The method according to claim 6, characterized in that the at least one actuator is a motor, piezo actuator, thermal actuator or the like.
8. Vorrichtung (10) zum Verschweißen oder Verkleben mit einer Ultraschall-Sonotrode (12), wobei die Amplitude der Ultraschall-Sonotrode (12) mittels eines ersten schnellen Reglers (18) wenigstens einer Regeleinrichtung (22) regelbar ist, der Abstand wenigstens eines Gegenlagers (24) zur Ultraschall-Sonotrode (12) mittels eines zweiten langsameren Reglers (20) der wenigstens einen Regeleinrichtung (22) regelbar ist, eine Aktivierung/Deaktivierung des zweiten Reglers (20) mittels eines Bereiches einer Amplitudenvorgabe (ÄSon) des ersten Reglers (18) steuerbar ist und der Leistungseintrag (Pτ.st) des Ultraschall-Systems (26) , umfassend die Ultraschall- Sonotrode (12) und wenigstens einen Ultraschall-Wandler (14), in wenigstens zwei zu verbindende Materialien (30) mittels einer Leistungsmesseinrichtung (28) kontinuierlich messbar ist, dadurch gekennzeichnet, dass eine Leistungsvorgabe (Psoii) als Führungsgröße für den ersten (18) und den zweiten Regler (20) dient, der Leistungseintrag (Pist) mittels des ersten (18) und des zweiten Reglers (20) regelbar ist und die Leistungsvorgabe (Psoii) in Abhängigkeit von der Vorschubgeschwindigkeit (vM) der wenigstens zwei Materialien (30) bildbar ist. 8. Device (10) for welding or gluing with an ultrasound sonotrode (12), the amplitude of the ultrasound sonotrode (12) being controllable by means of a first fast controller (18) of at least one control device (22), the distance of at least one Counter bearing (24) to the ultrasonic sonotrode (12) by means of a second slower controller (20) of which at least one control device (22) can be controlled, activation / deactivation of the second controller (20) by means of a range of an amplitude specification (Ä So n) of first controller (18) can be controlled and the power input (Pτ. s t) of the ultrasound system (26), comprising the ultrasound sonotrode (12) and at least one ultrasound transducer (14), in at least two materials (30 ) can be measured continuously by means of a power measuring device (28), characterized in that a power specification (Psoii) serves as a reference variable for the first (18) and the second controller (20), the power Entry (Pist) can be regulated by means of the first (18) and the second controller (20) and the power specification (Psoii) can be formed as a function of the feed rate (v M ) of the at least two materials (30).
9. Vorrichtung (10) nach Anspruch 8, dadurch gekennzeichnet, dass die Leistungsvorgabe (PSoιι) zusätzlich in Abhängigkeit von wenigstens einem Querschnitt (Q) der wenigstens zwei Materialien (30) bildbar ist.9. The device (10) according to claim 8, characterized in that the performance specification (P So ιι) can also be formed as a function of at least one cross section (Q) of the at least two materials (30).
10. Vorrichtung (10) nach Anspruch 9, dadurch gekennzeichnet, dass die Vorrichtung (10) wenigstens eine Messeinrichtung (34) umfasst, mittels derer der wenigstens eine Querschnitt (Q) kontinuierlich erfassbar ist.10. The device (10) according to claim 9, characterized in that the device (10) comprises at least one measuring device (34), by means of which the at least one cross section (Q) can be detected continuously.
11. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Leistungsvorgabe (Psoii) zusätzlich in Abhängigkeit von wenigstens einer Materialart der wenigstens zwei Materialien (30) bildbar ist.11. The device (10) according to any one of the preceding claims, characterized in that the performance specification (Psoii) can additionally be formed as a function of at least one type of material of the at least two materials (30).
12. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung12. The device (10) according to any one of the preceding claims, characterized in that the device
(10) wenigstens eine Geschwindigkeitsmesseinrichtung (32) umfasst, mittels derer die Vorschubgeschwindigkeit (vM) kontinuierlich messbar ist.(10) comprises at least one speed measuring device (32), by means of which the feed speed (v M ) can be measured continuously.
13. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das der Abstand des wenigstens einen Gegenlagers (24) mittels wenigstens eines Aktuators (36) variierbar ist.13. The device (10) according to any one of the preceding claims, characterized in that the distance between the at least one counter bearing (24) can be varied by means of at least one actuator (36).
14. Vorrichtung (10) nach Anspruch 13, dadurch gekennzeichnet, dass der wenigstens eine Aktuator (36) ein Motor, Piezoaktuator, thermischer Aktuator oder dergleichen ist. 14. The device (10) according to claim 13, characterized in that the at least one actuator (36) is a motor, piezo actuator, thermal actuator or the like.
PCT/EP2004/004087 2003-04-16 2004-04-16 Method and device for welding or bonding with the aid of an ultrasonic sonotrode WO2004091841A1 (en)

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DE10318485.6 2003-04-16

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US8182552B2 (en) 2006-12-28 2012-05-22 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US8632613B2 (en) 2007-12-27 2014-01-21 Kimberly-Clark Worldwide, Inc. Process for applying one or more treatment agents to a textile web
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