DE2251521A1 - Verfahren zum ultraschallschweissen von kunststoffen - Google Patents

Verfahren zum ultraschallschweissen von kunststoffen

Info

Publication number
DE2251521A1
DE2251521A1 DE2251521A DE2251521A DE2251521A1 DE 2251521 A1 DE2251521 A1 DE 2251521A1 DE 2251521 A DE2251521 A DE 2251521A DE 2251521 A DE2251521 A DE 2251521A DE 2251521 A1 DE2251521 A1 DE 2251521A1
Authority
DE
Germany
Prior art keywords
plastics
welding
transducers
mechanical oscillations
work piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE2251521A
Other languages
English (en)
Inventor
Dietrich Dipl Phys Leven
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2251521A priority Critical patent/DE2251521A1/de
Publication of DE2251521A1 publication Critical patent/DE2251521A1/de
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B29C65/088—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using several cooperating sonotrodes, i.e. interacting with each other, e.g. for realising the same joint
    • 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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/70—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
    • B29C66/735—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 extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • 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
    • B29C66/81463—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 comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • 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
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool 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
    • B29C66/95—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
    • 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

Description

  • Beschreibung Zur Patentanmeldung"Verfahren zum Ultraschallschweißen von Kunststoffen" Die Erfindung betrifft ein Verfahren zum Ultraschallschweissen von Kuststoffteilen.Zweck der Erfindung ist es, die Energiezufuhr in die Schweißzone zu verbessern und dadurch das Verschweißen von dickeren Werkstücken zu ermöglichen und/oder die mit der Energiezufuhr verknüpfte Materialschädigung zu verringern und/oder den Bereich der verschweißbaren Kunststoffarten zu erweitern.
  • Das Ultraschallschweißen von Kunststoffen ist bereits Stand der Technik. Einen Überblick über den Entwicklungsstand und die bekannte Literatur gibt z.B. POTENTE,H. :Untersuchung der Schweißbarkeit thermoplastischer Kunststoffe mit Ultraschall, Diss. TH Aachenl971.
  • Nach den bisher bekannten Verfahren wird die an der Schweißstelle nötige Schwingungsenergie dadurch zugeführt, daß einer der beiden Schweißpartner von einem Ultraschallerzeuger angeregt wird, während der zweite Schweißpartnerauf einem Amboß aufliegt. Dieser Amboß ist nach den bisherigen Verfahren entweder vollkommen ruhend oder er führt Schwingungen aus, die von der durch die beiden Schweißpartner und die Schweißzone übertragenen Restbewegungsenergie angeregt werden.
  • Auf jeden Fall muß dabei die gesamte zur Verschweißuing verfügbare Energie von einem der beiden Schweißpartner übertragen werden.
  • Der Erfindung liegt die Aufgabe zugrunde,diese Art der Energiezufuhr durch eine andere zu ersetzen, durch die die Möglichkeiten des Ultraschallschweißverfahrens für Kunststoffe erweitert werden.
  • Die Aufgabe wird erfindungsgemäß dadurch gelöst,daß der Schweißstelle nicht mehr nur von einer, sondern von zwei Seiten Schwingungsenergie zugeführt wird,indem beide Schweiepartner von Ultraschallschwingern angeregt werden.
  • Nach einer weitern Ausgestaltung dber Erfindung werden zwischen den Frequenzen, Amplituden und Phasenlagen der in die beiden Schweißpartner eingeleiteten Schwingungen auf elektrischem Wege feste Beziehungen hergestellt.
  • Nach einer weiteren Ausgestaltung der Erfindung werden die beiden Schweißpartner mit Schwingungen angeregt,deren Frequenzen gleich sind und deren Phasen um ca, 180° gegeneinander verschoben sind.
  • Figur 1 zeigt ein Ausführungsbeispiel, bei dem die Scwingungen vertikal zu gewünschten Schweißfläche eingeleitet werden.Die Generatoren 10 und 12 erzeugen elektrische Schwingungen, zwischen deren Frequenzen, Amplituden und Phasen durch das Koppelglied 11 definierte Beziehungen hergestellt werden können. In elektroakustischen Schwingern 1 und 7 werden die elektrischen Schwingungen in mechanische verwandelt und über die Sonotroden 3 und 6 den beiden Schweißpartnern 5 und 9 zugeührt. Zu Kontroll - und Regelzwecken prüfen die beiden Pickups 2 und 8 die mechanischen Schwingungen.
  • Die beiden Ultraschallschwinger und damit auch die beiden Schweißpartner werden von der statischen Kraft 4 gegeneinander gedrückt.

Claims (3)

  1. Patentansprüche fr
    Verfahren zum Ultraschallschweißen von Kunststoffen, dadurch gekennzeichnet, daß der Schweißstelle von beiden Seiten Schwingungsenergie zugeführt wird, indem beide Schweißpartner von Ultraschallschwingern angeregt werden.
  2. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1; dadurch gekennzeichnet, daß zwischen den Frequenzen, Amplituden und Shasenlagen der in die beiden Schweißpartner eingeleiteten Schwingungen feste Beziehungen aufqestellt werden können.
  3. 3. Vorrichtung zur Durchführung des Verfahrens nach Anspruchl, dadurch gekennzeichnet, daß die Frequenzen der eingeleiteten Schwingungen gleich und ihre Phasen um ca. 1800 gegeneinander verschoben sind.
    L e e r s e i t e
DE2251521A 1972-10-20 1972-10-20 Verfahren zum ultraschallschweissen von kunststoffen Pending DE2251521A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2251521A DE2251521A1 (de) 1972-10-20 1972-10-20 Verfahren zum ultraschallschweissen von kunststoffen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2251521A DE2251521A1 (de) 1972-10-20 1972-10-20 Verfahren zum ultraschallschweissen von kunststoffen

Publications (1)

Publication Number Publication Date
DE2251521A1 true DE2251521A1 (de) 1974-04-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE2251521A Pending DE2251521A1 (de) 1972-10-20 1972-10-20 Verfahren zum ultraschallschweissen von kunststoffen

Country Status (1)

Country Link
DE (1) DE2251521A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4975133A (en) * 1981-11-28 1990-12-04 Licentia Patent-Verwaltungs-Gmbh Apparatus for welding components together with the use of ultrasound
WO1999038667A2 (en) * 1998-01-30 1999-08-05 Michael John Radley Young Method and apparatus for welding polymer fabrics
DE102006006344A1 (de) * 2006-02-08 2007-08-16 Sumitomo Electric Bordnetze Gmbh Ultraschall-Schweißvorrichtung mit dynamisch aktivem Werkstückhalter
DE102013104227A1 (de) * 2013-04-25 2014-11-13 Herrmann Ultraschalltechnik Gmbh & Co. Kg Ultraschallschweißvorrichtung mit mehreren Sonotroden
DE102017215108A1 (de) * 2017-08-30 2019-02-28 Robert Bosch Gmbh Stanznietvorrichtung und Verfahren zum Verbinden wenigstens zweier Bauteile

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4975133A (en) * 1981-11-28 1990-12-04 Licentia Patent-Verwaltungs-Gmbh Apparatus for welding components together with the use of ultrasound
WO1999038667A2 (en) * 1998-01-30 1999-08-05 Michael John Radley Young Method and apparatus for welding polymer fabrics
WO1999038667A3 (en) * 1998-01-30 1999-11-25 Michael John Radley Young Method and apparatus for welding polymer fabrics
GB2351697A (en) * 1998-01-30 2001-01-10 Michael John Radley Young Method and apparatus for welding polymer fabrics
DE102006006344A1 (de) * 2006-02-08 2007-08-16 Sumitomo Electric Bordnetze Gmbh Ultraschall-Schweißvorrichtung mit dynamisch aktivem Werkstückhalter
DE102013104227A1 (de) * 2013-04-25 2014-11-13 Herrmann Ultraschalltechnik Gmbh & Co. Kg Ultraschallschweißvorrichtung mit mehreren Sonotroden
US9427912B2 (en) 2013-04-25 2016-08-30 Herrmann Ultraschalltechnik Gmbh & Co. Kg Ultrasonic welding apparatus having plurality of sonotrodes
EP2988919B1 (de) 2013-04-25 2017-06-14 Herrmann Ultraschalltechnik GmbH & Co. KG Ultraschallschweissvorrichtung mit mehreren sonotroden
DE102017215108A1 (de) * 2017-08-30 2019-02-28 Robert Bosch Gmbh Stanznietvorrichtung und Verfahren zum Verbinden wenigstens zweier Bauteile

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