DE102004012098B3 - Quality control process for use during the ultrasound welding of metal film conductors, comprises integrating the process with the welding by monitoring frequency and signal - Google Patents
Quality control process for use during the ultrasound welding of metal film conductors, comprises integrating the process with the welding by monitoring frequency and signal Download PDFInfo
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- DE102004012098B3 DE102004012098B3 DE102004012098A DE102004012098A DE102004012098B3 DE 102004012098 B3 DE102004012098 B3 DE 102004012098B3 DE 102004012098 A DE102004012098 A DE 102004012098A DE 102004012098 A DE102004012098 A DE 102004012098A DE 102004012098 B3 DE102004012098 B3 DE 102004012098B3
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Classifications
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- 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
- 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
- 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
- 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
- B29C66/95—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
- B29C66/9511—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 measuring their vibration frequency
-
- 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
- B23K2101/32—Wires
-
- 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
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- 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
- B29C66/922—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/9221—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power
-
- 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
- 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
-
- 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
- B29C66/9515—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 measuring their vibration amplitude
-
- 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
- B29L2009/003—Layered products comprising a metal layer
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3425—Printed circuits
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3462—Cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
- H01R12/592—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connections to contact elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
- H01R4/026—Soldered or welded connections comprising means for eliminating an insulative layer prior to soldering or welding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Qualitätskontrolle beim Ultraschallschweißen von kunststoffisolierten, metallischen Folienleitern, insbesondere FFC – Flexible Flat Cable – Leitern und/oder FPC – Flexible Printed Cable – Leitern, mit den im Oberbegriff des Anspruchs 1 genannten Merkmalen, sowie eine Schaltungsanordnung zur Durchführung des Verfahrens.The The invention relates to a method for quality control in ultrasonic welding of plastic insulated, metallic foil conductors, especially FFC - Flexible Flat Cable - Ladders and / or FPC - Flexible Printed Cable - Ladders, with the features mentioned in the preamble of claim 1, as well a circuit arrangement for carrying out the method.
Das Verfahren ist durch eine entsprechende Anpassung der elektrischen und mechanischen Komponenten auf kunststoffisolierte Metallteile jeder Querschnittsgeometrie übertragbar.The Procedure is through a corresponding adjustment of the electrical and mechanical components on plastic-insulated metal parts transferable to any cross-sectional geometry.
Es ist allgemein bekannt, das Ultraschallschweißen als Fügeverfahren zur elektrischen Kontaktierung elektronischer Schaltkreise, zur Herstellung von Draht-Draht-Verbindungen sowie zur mechanischen Verbindung von Kunststoffteilen einzusetzen. Ausgehend davon, dass Folienleiter mit den Vorteilen einer hohen Flexibilität, einem geringen Platzbedarf sowie mit einer Gewichtseinsparung verbunden sind, haben sich jedoch in zunehmendem Maße in der Kraftfahrzeugindustrie kunststoffisolierte, metallische Folienleiter, insbesondere FFC – Flexible Flat Cable – Leiter sowie FPC – Flexible Printed Cable – Leiter, für die Bordnetzkomponenten durchgesetzt.It is well known, ultrasonic welding as a joining method for electrical Contacting of electronic circuits, for the production of wire-wire connections and to use for the mechanical connection of plastic parts. Assuming that foil conductor with the advantages of a high Flexibility, a small footprint and associated with a weight saving are, however, increasingly in the automotive industry Plastic insulated, metallic foil conductors, in particular FFC - Flexible Flat Cable - Ladder as well as FPC - Flexible Printed Cable - Ladder, for the Wiring system components enforced.
So
ist es beispielsweise nach der
Um
eine Kontaktierung von Flachleitern, so von FFC-, FPC- und FLC-Leitern
vorzunehmen, sind gemäß der
Obwohl bei diesem Verfahren zur Kontaktierung von Flachleitern und damit bei der dazu dienenden Vorrichtung gleichzeitig eine Qualitätsüberwachung erfolgt, ist dieses Verfahren und damit auch diese Vorrichtung nicht im erforderlichen Maße dazu geeignet, sicherzustellen, dass bei der Kontaktierung der Flachleiter, also der FFC- und FPC-Leiter, die gebildeten Kontaktstellen den auftretenden mechanischen Belastungen standhalten, um die erforderliche Strom- bzw. Signalleitung zu gewährleisten, wenn nicht bereits vor dem Ultraschallschweißen eine beidseitige Abisolierung der kunststoffisolierten, metallischen Flachleiter vorgenommen wurde, so dass auch kein prozesssicheres Verarbeiten möglich ist. Wird diese beidseitige Abisolierung jedoch vorgenommen, um von vornherein sicherzustellen, dass die Kontaktstellen den mechanischen Belastungen standhalten, dann ist das stets mit einem erheblichen, nicht vertretbaren zeitlichen Mehraufwand im Gegensatz zur einseitigen Abisolierung verbunden. Ursache der Prozessunsicherheiten ist das stark differierende Schwingungs-, Dämpfungs- und Verformungsverhalten der Metall- und Kunststoffkomponenten der kunststoffisolierten, metallischen Flachleiter unter dem Einfluss des Ultraschallfeldes.Even though in this method for contacting flat conductors and thus at the same time a quality control in the serving device is done, this method and thus this device is not to the extent necessary suitable to ensure that when contacting the flat conductor, So the FFC and FPC conductor, the contact points formed Withstand mechanical loads occurring to the required power or signal line to ensure, if not before the ultrasonic welding a double-sided stripping the plastic-insulated, metallic flat conductor was made, so that no process-reliable processing is possible. Will this be bilateral Stripping, however, made to ensure from the outset that the contact points withstand the mechanical loads, then it is always with a considerable, unacceptable temporal Added expenses in contrast to unilateral stripping connected. reason the process uncertainties is the widely differing vibrational, damping and deformation behavior of the metal and plastic components of plastic insulated, metallic flat conductor under the influence of the ultrasound field.
Bei
dem weiterhin bekannten Verfahren zum Anschließen eines flexiblen Flachbandkabels
mit einem flexiblen Substrat und voneinander getrennten elektrischen
Leitern an ein elektrisches Bauteil mit voneinander getrennten Leitern
an der Oberfläche
eines Trägersubstrats
und der zur Durchführung
dieses Verfahrens vorgesehenen Vorrichtung nach der
Nicht
anders verhält
es sich bei dem Verfahren nach der
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Qualitätskontrolle beim Ultraschallschweißen von kunststoffisolierten, metallischen Folienleitern, insbesondere FFC – Flexible Flat Cable – Leitern und/oder FPC – Flexible Printed Cable – Leitern entsprechend dem Oberbegriff von Anspruch 1 sowie eine Schaltungsanordnung zur Durchführung dieses Verfahrens zu schaffen, indem sowohl durch das Verfahren als auch durch die Schaltungsanordnung auch dann, wenn keine beidseitige Abisolierung der kunststoffisolierten, metallischen Folienleiter erfolgt, bei gleichzeitiger Einwirkung auf den Ultraschallschweißprozess, ein prozesssicheres Verarbeiten ermöglicht wird und dabei bei der Verbindung der beiden Trägerwerkstoffe Kontaktstellen durch die Bindungsstellen gebildet werden, die den auftretenden mechanischen Belastungen standhalten, so dass die erforderliche Strom- bzw. Signalleitung gewährleistet wird.Of the Invention is based on the object, a method for quality control in ultrasonic welding of plastic-insulated, metallic foil conductors, in particular FFC - Flexible Flat Cable - Ladders and / or FPC - Flexible Printed Cable - Ladders according to the preamble of claim 1 and a circuit arrangement to carry this out To create a process by both the procedure and by the circuit arrangement even if no two-sided Stripping of the plastic-insulated, metallic foil conductors occurs while acting on the ultrasonic welding process, a process-reliable processing is possible and thereby in the Connection of the two carrier materials Contact sites are formed by the binding sites that the Withstand mechanical loads occurring, so that the required Power or signal line guaranteed becomes.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren mit den im Anspruch 1 genannten Merkmalen gelöst. Dadurch, dass die Qualitätskontrolle beim Ultraschallschweißen in den Schweißprozess derart integriert wird, dass beim Ultraschallschweißen im Sinne einer Frequenz- und Schwingungsanalyse die Ultraschallschwingungen, die sowohl aus den auf die Bindungsstelle wirkenden statischen Kräften als auch aus den durch die Bindungsstelle in die Werkstückhalterung übertragenen oder dort erzeugten dynamischen Kräften – den Körperschallschwingungen – resultieren, überwacht werden, wird erreicht, dass auch dann, wenn keine beidseitige Abisolierung der kunststoffisolierten, metallischen Folienleiter erfolgt, ein prozesssicheres Verarbeiten ermöglicht wird und dabei bei der Verbindung der beiden Trägerwerkstoffe Kontaktstellen durch die Bindungsstellen gebildet werden, die den auftretenden mechanischen Belastungen standhalten, so dass die erforderliche Strom- bzw. Signalleitung gewährleistet wird.These The object is achieved by a Method solved by the features mentioned in claim 1. Thereby, that quality control in ultrasonic welding in the welding process is integrated so that when ultrasonic welding in the sense a frequency and vibration analysis the ultrasonic vibrations, both from the static forces acting on the binding site also from the transmitted through the binding site in the workpiece holder or generated there dynamic forces - the structure-borne sound vibrations - result, monitored Be achieved, that is, even if no double-sided stripping the plastic-insulated, metallic foil conductor takes place enables process-reliable processing is and contact points in the connection of the two carrier materials are formed by the binding sites that occur withstand mechanical loads, so that the required Power or signal line guaranteed becomes.
Weitere bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den übrigen, in den Unteransprüchen genannten Merkmalen. Danach wird die Überwachung des Schwingungsverhaltens der auf die herzustellende Bindungsstelle ausgerichtete Sonotrode während des Ultraschallschweißens vorgenommen, indem eine Frequenz und eine Amplitude über die Zeit analysiert wird. Hierzu dient bei der Überwachung im Sinne der Frequenzanalyse ein Frequenzspektrum, deren Daten einer Auswerteeinheit zur Analyse übermittelt werden, nachdem zuvor eine Filterung vorgenommen wurde. Dabei wird vor der Übermittlung der Daten an die Auswerteeinheit ein zweifach gefiltertes Frequenzspektrum zur Verfügung gestellt, bei dem eine Tiefpassfilterung zur Ausblendung der statischen Kraftkomponente und eine Bandpassfilterung zur Ausblendung der Ultraschallkomponente vorgenommen wird. Da insbesondere die in der Werkstüfkhalterung verursachten Körperschallschwingungen stark mit der sich während der Bindungsbildung ändernden Impedanz der Bindungszone korelliert sind, erlauben diese die vorgenommene Filterung und damit durch Analyse eine Charakteristik des Bindungsverlaufes.Further preferred embodiments of the invention will become apparent from the others, mentioned in the dependent claims Features. After that, the surveillance the vibration behavior of the binding site to be produced aligned sonotrode during of ultrasonic welding made by adding a frequency and an amplitude over the Time is analyzed. This is used for monitoring in the sense of frequency analysis a frequency spectrum whose data is transmitted to an evaluation unit for analysis after filtering first. It will before the transmission the data to the evaluation a doubly filtered frequency spectrum to disposal in which a low-pass filtering to hide the static Force component and bandpass filtering to hide the ultrasonic component is made. In particular, those in the Werkstüfkhalterung caused structure-borne vibrations strong with the while changing the bond formation Impedance of the binding zone are corellated, these allow the made Filtering and thus by analysis a characteristic of the bonding process.
Bei der Durchführung des Verfahrens erfolgt in weiterer Ausgestaltung der Erfindung zur Vornahme der Frequenzanalyse eine Auswertung von Frequenzkomponenten. Diese können beispielsweise aus dem Signal eines der Werkstoffhalterung zugeordneten Sensors resultieren oder aber auch aus der kontaktlosen Erfassung von Körperschallschwingungen, wobei diese durch Laser messverfahren vorgenommen wird und hierbei vorteilhaft Laserdopplerinterferometrie zur Anwendung kommt.at the implementation of the method takes place in a further embodiment of the invention for Performing the frequency analysis an evaluation of frequency components. these can for example, from the signal of one of the material holder assigned Sensors result or even from the contactless detection of structure-borne vibrations, this is done by laser measuring method and here advantageous laser Doppler interferometry is used.
Gemäß einem weiteren Verfahrensschritt sieht das erfindungsgemäße Verfahren vor, dass in Abhängigkeit vom Ergebnis der Auswertung der Frequenzkomponenten über eine Regelstrecke Einfluss auf den Ultraschweißprozess genommen wird, so dass stets Bindungsstellen, also Kontaktstellen, zwischen den kunststoffisolierten, metallischen Folienleitern hergestellt werden, die eine störungsfreie Strom- bzw. Signalleitung gewährleisten.According to one Another process step sees the inventive method before, that in dependence from the result of the evaluation of the frequency components over one Controlled system influence is taken on the ultrasonic welding process, so that always bonding sites, ie contact points, between the plastic-insulated, Metallic film conductors are produced, which provide a trouble-free power or signal line.
Generell lässt sich in Durchführung des Verfahrens nach der Erfindung der kunststoff- vom metalldominierten Verlauf des Ultraschallschweißprozesses trennen. Durch eine Auswertung von aus dem Signal resultierenden Frequenzparametern sowie aus der Parallelauswertung der statischen Kraftkomponente werden folgende Teilprozesse identifiziert:
- – Änderungen in der Kleberschicht durch Verformen und Verdrängen,
- – Änderungen in der Kunststoffschicht durch Verformen und Verdrängen,
- – Schweißen im Kunststoffanteil der FFC- und/oder FPC-Leiter,
- – Beginn des Ultraschallschweißens im Metallanteil der FFC- und/oder FPC-Leiter,
- – Änderung der Relativbewegung der Grenzflächen zueinander infolge veränderter Oberflächenkontaminationen und Fremdstoffanteile im Kontaktbereich,
- – Ende der Relativbewegung zwischen den Kontaktflächen und Beginn der Bindungsbildung,
- – Ende der Bindungsbildung und Auflösung von Mikroverschweißungen in der Kontaktstelle, mit dem Ergebnis, dass sich eine Festigkeitsreduzierung durch einen hohen Energieeintrag anschließt und die Zerstörung der Bindungsstelle beginnt,
- – Durchschweißen durch die Bindungsstelle und
- – Fehlschweißungen infolge von Verunreinigungen und Kunststoffresten im Bereich der Bindungsstelle.
- – Insbesondere können über den gesamten Schweißprozess die in der Kontaktstelle wirkenden Reibungskräfte zeitzugehörig ermittelt werden.
- Changes in the adhesive layer due to deformation and displacement,
- - changes in the plastic layer due to deformation and displacement,
- Welding in the plastic portion of the FFC and / or FPC conductors,
- Beginning of the ultrasonic welding in the metal portion of the FFC and / or FPC conductors,
- Change of the relative movement of the boundary surfaces to one another as a result of changed surface contaminations and foreign substance components in the contact area,
- - End of the relative movement between the con contact surfaces and the beginning of bond formation,
- End of bond formation and dissolution of micro welds in the pad, with the result that strength reduction is followed by high energy input and destruction of the binding site begins,
- - Welding through the binding site and
- - Misfires due to impurities and plastic residues in the region of the binding site.
- - In particular, over the entire welding process, the frictional forces acting in the contact point can be determined in time.
Zur Durchführung des erfindungsgemäßen Verfahrens ist eine Schaltungsanordnung zur Qualitätskontrolle beim Ultraschallschweißen von kunststoffisolierten, metallischen Folienleitern vorgesehen, bei der der Gegenelektrode und damit der Werkstückhalterung der Vorrichtung zum Ultraschallschweißen der kunststoffisolierten, metallischen Folienleiter ein aus seinem Signal eine Auswertung von Frequenzkomponenten ermöglichender Sensor zugeordnet ist, dem über einen eine Ausblendung der statischen Kraftkomponente vornehmenden Filter sowie über einen eine Ausblendung der Ultraschallkomponente vornehmenden Filter eine Auswerte einheit nachgeschaltet ist. Dabei steht die Auswerteeinheit über eine Regelstrecke mit der Sonotrode der Vorrichtung zum Ultraschallschweißen der kunststoffisolierten, metallischen Folienleiter in Verbindung, so dass ausgehend vom Ergebnis der Qualitätskontrolle ständig auf die Qualität der herzustellenden Bindungsstellen eingewirkt werden kann.to execution the method according to the invention is a circuit for quality control of ultrasonic welding of plastic-insulated, metallic foil conductors provided at the counter electrode and thus the workpiece holder of the device for ultrasonic welding the plastic-insulated, metallic foil conductor one from his Signal an evaluation of frequency components enabling Sensor is assigned to the over one performing a suppression of the static force component Filter as well as over a filter which eliminates the ultrasonic component an evaluation unit is connected downstream. The evaluation unit has a Controlled system with the sonotrode of the device for ultrasonic welding of plastic insulated, metallic foil conductor in conjunction, so that based on the result of quality control constantly on the quality the binding sites to be produced can be acted upon.
Die Anwendung der Erfindung ist nicht allein auf die Bordnetztechnik von Kraftfahrzeugen begrenzt, sondern die durch sie erzielten Vorteile treten auch dann ein, wenn eine Anwendung in der Bordnetztechnik von Flugzeugen, Schiffen, Triebfahrzeugen etc. erfolgt.The Application of the invention is not solely to the on-board network technology limited by motor vehicles, but the benefits achieved by them occur even if an application in the on-board network technology of aircraft, ships, traction vehicles, etc. takes place.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel anhand der zugehörigen Zeichnungen näher erläutert. Es zeigen:The Invention will be described below with reference to an embodiment with reference to the accompanying drawings explained in more detail. It demonstrate:
In
der in
Durch
den Pfeil
Aus
dem aus
Bevor
jedoch das aus dem Körperschallsignal
- 11
- Vorrichtung zum Ultraschallschweißencontraption for ultrasonic welding
- 2, 32, 3
- Folienleiterfoil conductor
- 44
- Sonotrodesonotrode
- 55
- WerkstückhalterungWorkpiece holder
- 66
- Bindungsstellebinding site
- 77
- Sensorsensor
- 8, 9, 158th, 9, 15
- Pfeilearrows
- 1010
- Auswerteeinheitevaluation
- 11, 1211 12
- Filterfilter
- 1313
- Regelstreckecontrolled system
- 1414
- Reglerregulator
- 1616
- KörperschallsignalBorne noise signal
- 1717
- Frequenzspektrumfrequency spectrum
Claims (12)
Priority Applications (1)
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DE102004012098A DE102004012098B3 (en) | 2004-03-08 | 2004-03-08 | Quality control process for use during the ultrasound welding of metal film conductors, comprises integrating the process with the welding by monitoring frequency and signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102004012098A DE102004012098B3 (en) | 2004-03-08 | 2004-03-08 | Quality control process for use during the ultrasound welding of metal film conductors, comprises integrating the process with the welding by monitoring frequency and signal |
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DE102004012098B3 true DE102004012098B3 (en) | 2005-08-18 |
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DE102004012098A Expired - Fee Related DE102004012098B3 (en) | 2004-03-08 | 2004-03-08 | Quality control process for use during the ultrasound welding of metal film conductors, comprises integrating the process with the welding by monitoring frequency and signal |
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DE102006062633A1 (en) | 2006-12-27 | 2008-07-03 | Sumitomo Electric Bordnetze Gmbh | Electromagnetic radiation receiving and/or transmitting device for on-board electrical system, has segments of linear two-core foil flat conductors and base segments, whose length is formed proportional to predetermined wavelength |
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CN101594963B (en) * | 2006-09-16 | 2012-03-07 | 申克索诺系统有限责任公司 | Quality control method for ultrasound welding |
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DE102016214227B3 (en) * | 2016-08-02 | 2017-12-07 | Schunk Sonosystems Gmbh | Apparatus and method for producing a tested welded joint |
DE102016218308A1 (en) * | 2016-08-03 | 2018-02-08 | Schunk Sonosystems Gmbh | Apparatus and method for producing a tested welded joint |
DE102022128873A1 (en) | 2022-11-01 | 2024-05-02 | Albert-Ludwigs-Universität Freiburg, Körperschaft des öffentlichen Rechts | Ultrasonic welding process with joining partner feedback and device for this |
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CN101594963B (en) * | 2006-09-16 | 2012-03-07 | 申克索诺系统有限责任公司 | Quality control method for ultrasound welding |
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DE102022128873A1 (en) | 2022-11-01 | 2024-05-02 | Albert-Ludwigs-Universität Freiburg, Körperschaft des öffentlichen Rechts | Ultrasonic welding process with joining partner feedback and device for this |
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Owner name: SUMITOMO ELECTRIC BORDNETZE GMBH, 38444 WOLFSBURG, |
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