WO2010063605A1 - Dispositif et procédé d'assemblage de pièces par ultrasons, à l'aide d'un dispositif de focalisation - Google Patents

Dispositif et procédé d'assemblage de pièces par ultrasons, à l'aide d'un dispositif de focalisation Download PDF

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Publication number
WO2010063605A1
WO2010063605A1 PCT/EP2009/065679 EP2009065679W WO2010063605A1 WO 2010063605 A1 WO2010063605 A1 WO 2010063605A1 EP 2009065679 W EP2009065679 W EP 2009065679W WO 2010063605 A1 WO2010063605 A1 WO 2010063605A1
Authority
WO
WIPO (PCT)
Prior art keywords
components
ultrasonic
focusing
generator
ultrasound
Prior art date
Application number
PCT/EP2009/065679
Other languages
German (de)
English (en)
Inventor
Marko Liebler
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2010063605A1 publication Critical patent/WO2010063605A1/fr

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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
    • B23K20/106—Features related to sonotrodes
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot 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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81455—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81459—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a filled deformable bladder, e.g. bladder filled with oil, with granules or with a meltable solid material
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B29C66/9513—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 characterised by specific vibration frequency values or ranges
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/18—Sheet panels
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • 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
    • B29C66/9512—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 frequency
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12—Thermoplastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0061—Gel or sol
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Definitions

  • the present invention relates to an apparatus and a method for joining components by means of ultrasound.
  • Amplitude transformation piece (so-called booster) and a welding tool (so-called sonotrode) are fed to the workpieces to be joined.
  • the whole unit works in resonance.
  • a frequency range of the ultrasound used is between 20 kHz and 40 kHz.
  • Molecular and boundary surface friction creates the heat needed to plasticize.
  • the mechanical vibrations must be supplied to the components to be connected under a certain contact pressure and with a suitable joining seam geometry (for example so-called energy directors). Such a method is disclosed for example in DE 42 06 584 A1.
  • thermoplastics as a further disadvantage of the known ultrasonic welding method, the restriction to welds in the near field of vibration entry.
  • a further disadvantage is the large installation space required by the resonance design of the ultrasonic welding system and the high noise level occurring especially when welding with thin components or films.
  • Ultrasound with the features of claim 1 has the advantage that in contrast to the known ultrasonic welding process no or only a minimal contact pressure for connecting the components is necessary and lower vibration amplitudes are introduced into the components. As a result, a mechanical load during the connection process can be kept very low and a structure of the device can be simple and inexpensive.
  • a focused ultrasound is used to generate heat at a focal point or in a focus region, which is generated due to the internal sound absorption of the material (molecular friction) of the components.
  • the internal absorption of thermoplastic materials is frequency dependent and increases i.a. with increasing frequency up to the frequency range of a few MHz.
  • an ultrasound generator, a waveguide and a focusing device are provided for this purpose. From, for example piezoceramic, ultrasonic generator mechanical vibrations in the ultrasonic frequency range are generated, focused by the focusing, and introduced via the waveguide in the components to be joined.
  • Focusing the ultrasonic waves can be a point or line Connection of two components can be achieved without the disadvantages of the known ultrasonic welding process are available.
  • the ultrasound generator itself preferably operates in resonance, but the overall system does not require a resonant design.
  • the ultrasound propagates as a progressive wave from the ultrasound generator to the components.
  • the waveguide is arranged between the ultrasound generator and the components to be connected and ensures a low-loss sound transmission.
  • a minimal contact pressure between waveguide and components is required to ensure a gap-free arrangement between waveguide and components and thus a lossless sound transmission.
  • the focusing device focuses the ultrasound generator generated ultrasound in a spatially limited area, for example, in a focal point.
  • a localized heating of the material of the components is achieved, whereby a corresponding localized, for example, punctiform, connection of the components is achieved.
  • Interfaces of the components to be joined are not induced to macroscopic relative movements in contrast to friction welding. For this reason, among other things, the method is quiet. Furthermore, by bundling the sound waves connections in the depth of the components possible without plasticizing the surface.
  • the spatially limited heating of the components to be connected focuses the sound waves emitted by an ultrasound generator.
  • This focusing can take place, for example, via a self-focusing arrangement, for example by an ultrasound generator in the form of a spherical shell section, a lens-focusing arrangement or via a reflector-focusing arrangement.
  • a plurality of ultrasonic transmitters can be arranged as a transmitter array and the focusing can be achieved via the electronic control of the array.
  • the waveguide is integrally formed with the ultrasound generator.
  • the waveguide is an element made of a solid metal material, wherein the metallic solid material is effective as a coupling medium.
  • the waveguide comprises a membrane filled with a fluid or filled with a gel.
  • the fluid or the gel acts as a coupler medium.
  • the fluid used is preferably a liquid.
  • the membrane is designed to be flexible. As a result, the position of the focus area within the components can be varied in a simple manner.
  • the device can be adapted to different conditions quickly and easily. In this way, for example, a quick conversion of the device can be achieved if components made of different materials or with different joining geometries to be added successively.
  • the device comprises a three-dimensional displacement unit in order to move the device relative to the components and / or the components relative to the device.
  • a three-dimensional displacement unit in order to move the device relative to the components and / or the components relative to the device.
  • the ultrasonic generator is a piezoelectric one
  • the ultrasonic generator generates ultrasonic waves in a frequency range of 0.1 MHz to 50 MHz, more preferably in a frequency range of 1 MHz to 10 MHz.
  • a plurality of ultrasonic generators each with its own focus is preferably provided.
  • several connection points can be generated simultaneously.
  • the device preferably further comprises a frequency changing device and / or an amplitude changing means for changing a frequency and / or an amplitude of the ultrasonic waves.
  • the ultrasound generator is designed such that it generates monofrequent or multifrequency ultrasound signals.
  • an acoustic matching layer for improving the power transmission is arranged between the ultrasound generator and the waveguide.
  • the ultrasonic generator is made of piezoceramic material in the form of a spherical shell section.
  • the focusing device can be integrated in the ultrasound generator in a simple manner.
  • the waveguide connected to the ultrasonic generator further has a conical shape.
  • the bundling of the ultrasound thus takes place in a focal point.
  • the ultrasonic generator has the shape of a cylindrical shell section.
  • the bundling of the ultrasound is thus in a focus line.
  • focused ultrasound is used.
  • the bundling of the ultrasound is preferably achieved via a self-focusing arrangement, a lens-focusing arrangement, a reflector-focusing arrangement or a phased array of a plurality of ultrasound generators in the form of an array.
  • the present invention relates to a method for joining components by means of ultrasound.
  • the method comprises the steps of providing ultrasound by means of an ultrasound generator and the
  • heat is thereby generated by utilizing the absorption properties of the material of the components to be joined.
  • the sound absorption increases with increasing temperature and thus leads to a self-reinforcing process.
  • the heated material layer forms a barrier for further sound propagation that component regions, which are located behind the focus region when viewed from the ultrasound generator, are heated less strongly.
  • the method is preferably suitable for joining thermoplastics. More preferably, the method for joining multilayer composite films of the same or different materials, such as plastic or metal, is used in packaging technology.
  • FIG. 1 shows a schematic sectional view of a device according to a first exemplary embodiment of the invention
  • FIG. 2 shows a schematic sectional view of a device according to a second exemplary embodiment of the invention
  • Figure 3 is a schematic sectional view of an apparatus according to a third embodiment of the invention.
  • Figure 4 is a schematic sectional view of an apparatus according to a fourth embodiment of the invention.
  • a device 1 for connecting two components 5, 6 by means of ultrasound will be described below with reference to FIG.
  • the device 1 comprises an ultrasound generator 2 and a waveguide 3.
  • the ultrasound generator 2 is a piezoelectric ultrasound transmitter operating in a frequency range from 0.1 MHz to 50 MHz, particularly preferably in the range from 1 MHz to 10 MHz.
  • the waveguide 3 is one of a Metallic solid material produced cone, which adjoins the ultrasonic generator 2 directly.
  • the metal material forms the coupler medium, which serves for a low-loss transmission of the generated ultrasonic waves 8. Due to the self-focusing arrangement, the ultrasound generator 2 focuses the ultrasound, so that it is focused into a focus region 7.
  • a focusing device 4 is integrated in the ultrasonic generator 2.
  • the focus region 7 is in this case at the interface of the components 5, 6.
  • the components 5, 6 touch it, but no bias or a contact pressure must be present to force the components against each other with force, as long as a gap-free arrangement between
  • Ultrasonic generator 2 and waveguide 3, as well as between waveguide 3 and Füge tone 5.6 is ensured.
  • the ultrasonic waves 8 generated in the ultrasonic generator 2 are thus concentrated in the focus region 7, so that a point-like local heating takes place.
  • the metal used as a waveguide is further characterized by only small losses resulting from attenuation of the acoustic impedance of the materials.
  • a melting of the components 5, 6 to be joined begins, so that a punctiform connection is realized can.
  • a weld line can be created by placing individual weld points.
  • a three-dimensional displacement unit not shown, is provided.
  • thermoplastics are used as components to be joined.
  • the joining device can be used in particular for joining components which are difficult to access due to their complex geometry. As shown in Figure 1, the
  • Joining process thereby lie in a central region of the component, so that the connection point is not visible from the outside later.
  • joining at inaccessible or hard to reach places between two components can be realized.
  • the device 1 of the second exemplary embodiment essentially corresponds to that of the first exemplary embodiment.
  • the waveguide 3 is designed differently in the second embodiment.
  • the waveguide 3 comprises an outer membrane 10, which is filled with a coupler medium.
  • a liquid 9 is provided as the coupling medium.
  • a gel or the like may be provided.
  • the membrane 10 is designed to be flexible, so that it is ensured that there is always sufficient coupling medium between the ultrasound generator and the focus region 7. In particular, by using the flexible membrane 10, a position of the focus region 7 can be changed in a simple manner. As a result, a high adaptability of the device 1 is achieved.
  • FIG. 3 shows a device 1 according to a third embodiment of the invention, wherein identical or functionally identical parts are again denoted by the same reference numerals as in the preceding embodiments.
  • the waveguide 3 comprises a hollow metal cone 11, which is filled with a coupling medium 12.
  • the coupler medium 12 is e.g. a liquid or a gel. Otherwise, this embodiment corresponds to the previous embodiment, so that reference can be made to the description given there.
  • joining of the components 5, 6 can thus be achieved by the use of focused ultrasound in all examples described.
  • the ultrasound generator 2 or the focusing device 4 and the waveguide 3 can thereby different
  • Penetration depths are realized and also a variety of materials are joined. Also, the frequency and the amplitude of the ultrasonic waves 8 can be changed to allow adjustment.
  • the device 1 corresponds to the fourth one
  • Embodiment essentially the first embodiment in contrast to the ultrasonic generator 2 and the focusing device 4 are provided as separate components. This makes it possible that the focusing device 4 is exchangeable, for example, to be replaced by another focusing device, if adjustments due to
  • the focusing device may in this case be designed, for example, as a lens.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un dispositif (1) servant à l'assemblage de pièces (5, 6) au moyen d'ondes ultrasonores (8), comprenant un générateur d'ultrasons (2), un guide d'ondes (3) qui est disposé entre le générateur d'ultrasons (2) et les pièces à assembler (5, 6), et un dispositif de focalisation (4) qui focalise les ondes ultrasonores (8) produites par le générateur d'ultrasons (2) dans une zone de focalisation (7). La zone de focalisation (7) est orientée sur un point d'assemblage entre les pièces à assembler (5, 6) pour l'assemblage des pièces (5, 6).
PCT/EP2009/065679 2008-12-05 2009-11-24 Dispositif et procédé d'assemblage de pièces par ultrasons, à l'aide d'un dispositif de focalisation WO2010063605A1 (fr)

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DE102008044370.0 2008-12-05
DE102008044370A DE102008044370A1 (de) 2008-12-05 2008-12-05 Vorrichtung und Verfahren zum Verbinden von Bauteilen mittels Ultraschall

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DE102013212715A1 (de) * 2013-06-28 2014-12-31 Robert Bosch Gmbh Quernahtfügevorrichtung zum Fügen einer Siegelnaht für eine flexible Verpackung
DE102013212697A1 (de) 2013-06-28 2014-12-31 Robert Bosch Gmbh Verfahren zum Fügen einer Siegelnaht einer Schlauchbeutelverpackung mittels eines Ultraschallapplikators und Längsnahtfügevorrichtung zur Verwendung mit dem Verfahren
DE102017215535A1 (de) 2017-09-05 2019-03-07 Robert Bosch Gmbh Verpackungsanlage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1174990A (en) * 1966-10-19 1969-12-17 Eiji Mori Method and Apparatus for Welding Plastics Members
DE2326894A1 (de) * 1973-05-25 1974-12-12 Juergen Dipl Ing Fichtner Verfahren zum verschweissen zweier aufeinanderliegender werkstuecke aus thermoplastischem werkstoff
US4582239A (en) * 1983-02-23 1986-04-15 Mecasonic Ultrasonic welding tools
US5275324A (en) * 1992-03-26 1994-01-04 Kabushiki Kaisha Shinkawa Wire bonding apparatus
US20040227305A1 (en) * 2003-02-17 2004-11-18 Claveyrollas Daniel F. Process and apparatus for joining by welding at least two metallic sheets and joints obtained
US20040237304A1 (en) * 2000-01-31 2004-12-02 Picojet, Inc. Ultrasonic bonding process for making a microfluid device
GB2437599A (en) * 2006-04-27 2007-10-31 Sra Dev Ltd Ultrasound device for welding polymeric implants to biological tissue

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4206584C2 (de) 1992-03-03 1994-03-10 Fraunhofer Ges Forschung Vorrichtung und Verfahren zum Verbinden zweier Bauteile mittels Ultraschall

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1174990A (en) * 1966-10-19 1969-12-17 Eiji Mori Method and Apparatus for Welding Plastics Members
DE2326894A1 (de) * 1973-05-25 1974-12-12 Juergen Dipl Ing Fichtner Verfahren zum verschweissen zweier aufeinanderliegender werkstuecke aus thermoplastischem werkstoff
US4582239A (en) * 1983-02-23 1986-04-15 Mecasonic Ultrasonic welding tools
US5275324A (en) * 1992-03-26 1994-01-04 Kabushiki Kaisha Shinkawa Wire bonding apparatus
US20040237304A1 (en) * 2000-01-31 2004-12-02 Picojet, Inc. Ultrasonic bonding process for making a microfluid device
US20040227305A1 (en) * 2003-02-17 2004-11-18 Claveyrollas Daniel F. Process and apparatus for joining by welding at least two metallic sheets and joints obtained
GB2437599A (en) * 2006-04-27 2007-10-31 Sra Dev Ltd Ultrasound device for welding polymeric implants to biological tissue

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