CH654247A5 - Ultraschall-schweissvorrichtung und verwendung derselben. - Google Patents

Ultraschall-schweissvorrichtung und verwendung derselben. Download PDF

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Publication number
CH654247A5
CH654247A5 CH6996/81A CH699681A CH654247A5 CH 654247 A5 CH654247 A5 CH 654247A5 CH 6996/81 A CH6996/81 A CH 6996/81A CH 699681 A CH699681 A CH 699681A CH 654247 A5 CH654247 A5 CH 654247A5
Authority
CH
Switzerland
Prior art keywords
welding device
sonotrode
lamellae
individual
welding
Prior art date
Application number
CH6996/81A
Other languages
English (en)
Inventor
Bernhard Dipl-Ing Krayer
Original Assignee
Sig Schweiz Industrieges
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 Sig Schweiz Industrieges filed Critical Sig Schweiz Industrieges
Priority to CH6996/81A priority Critical patent/CH654247A5/de
Priority to DE19823236164 priority patent/DE3236164A1/de
Priority to US06/435,337 priority patent/US4444614A/en
Priority to IT8268259A priority patent/IT8268259A0/it
Publication of CH654247A5 publication Critical patent/CH654247A5/de

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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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/346—Making joints having variable thicknesses in the joint area, e.g. by using jaws having an adapted configuration
    • 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
    • B29C66/70—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
    • B29C66/72327—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 natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/8141—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
    • B29C66/81427—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 comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/81453—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 made of flexible slats, flexible fins, flexible bristles or springs, e.g. coiled springs
    • 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
    • B29C66/81461—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 multi-lamellar or segmented, i.e. comprising a plurality of strips, plates or stacked elements
    • 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
    • B29C66/8161—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 said pressing elements being supported or backed-up by springs or by resilient 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
    • B29C66/8161—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 said pressing elements being supported or backed-up by springs or by resilient material
    • B29C66/81611—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 said pressing elements being supported or backed-up by springs or by resilient material by resilient 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
    • B29C66/01—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
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • 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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81264—Mechanical properties, e.g. hardness
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/007—Hardness

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Description

Die vorliegende Erfindung betrifft eine Ultraschall-Schweissvorrichtung zum Verschweissen von mehrlagig angeordneten Folien gemäss dem Oberbegriff des unabhängigen Patentanspruchs 1 sowie eine Verwendung gemäss dem Oberbegriff des Nebenanspruchs 8.
Zum Verschweissen von mit thermoplastischem Material beschichteter Pappe ist es gemäss der CH-A 613 170 bekannt geworden, die Vibrationsschweissung anzuwenden. Bei dieser Schweissung wird mechanische Energie in lokale Wärmeenergie übergeführt, um den erforderlichen Wärme- und Energiebetrag zu reduzieren. Beispielsweise ist aus der US-A 3 526 792 ein Ultraschall-Umformer bekannt geworden, der einen Konverter zur Umwandlung elektrischer Energie in mechanische Energie und ein die Energie konzentrierendes Teil, die Sonotrode, umfasst, mit dem sich die mechanische Energie in Form von Schwingungen einer bestimmten Frequenz konzentrieren lässt. Diese Sonotrode wirkt im Betrieb mit einem Amboss zusammen, indem die beschichteten Teile zwischen der Arbeitsfläche der Sonotrode und der Arbeitsfläche des Ambosses zusammengepresst werden. Die Vibration der Sonotrode erzeugt im zusammengepressten Material Reibungswärme, die ausreicht, um die thermoplastischen Schichten zu aktivieren, derart, dass das thermoplastische Material der Lagen zusammenfliesst. Nach Abschalten der Vibration kühlt sich das thermoplastische Material ab und verfestigt sich, so dass die aufeinanderliegenden Schichten oder Lagen miteinander verbunden sind.
Eine Anwendung dieser Schweissart in der Verpackungsindustrie ist in der US-A 4 279 675 beschrieben. Dabei ist der Amboss mit einer Ausnehmung am Rande der Arbeitsfläche und in einer zentralen Partie derselben versehen, um die Verdickung der aufeinandergelegten Pappeteile aufzunehmen. Zwischen diesen Ausnehmungen sind längsgerichtete Nuten angeordnet, damit das verflüssigte thermoplastische Material an den Kreten zwischen benachbarten Nuten weggedrückt werden und sich in den Nuten sammeln kann, um eine Ver-schweissung zu bilden.
Es hat sich gezeigt, dass eine solche Anordnung nicht genügt, wenn stellenweise mehrschichtige Partien vorhanden sind, wie sie beispielsweise bei Längsnähten in Schlauchbeutelpackungen üblich sind, so dass es Stellen geben kann, die nicht verschweisst sind, und bei einer evakuierten Packung luftdurchlässige Stellen gebildet werden könnten.
Es ist eine Aufgabe der Erfindung, eine Schweissvorrichtung der beschriebenen Art zu schaffen, bei der diese Nachteile behoben sind und unabhängig von der Anzahl Schichten bei Nähten eine luftdichte Verschweissung ermöglicht wird.
Erfindungsgemäss wird dies durch die Merkmale im kennzeichnenden Teil des unabhängigen Patentanspruchs erreicht.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung erläutert. Es zeigen:
Fig. 1 eine schematische Darstellung von Sonotrode und Amboss im Aufriss,
Fig. 2 dieselbe Anordnung, wie Fig. 1, im Seitenriss,
Fig. 3 bis Fig. 6 verschiedene Ausführungsbeispiele des Ambosses im Aufriss.
Die Sonotrode 10 liegt mit ihrer Arbeitsfläche 11 auf der Arbeitsfläche 23 eines Ambosses 20. Der Amboss 20 besteht aus einer Anzahl nebeneinanderliegender einzelner Lamellen 21. Diese Lamellen 21 sind in einem Gehäuse 24 mit zwei Seitenwänden 24a, 24b, einer Bodenwand 24c sowie einer Vorder- und einer Rückwand 24d, 24e eingebettet. Die beiden Seitenwände 24a, 24b weisen oben längsverlaufende Stützplatten 25a, 25b als Gegenhalter für die Lamellen 21 auf. Im Gehäuseinnern befinden sich ein Stützboden 26 und eine Presswand 27, die mittels einer Schraube 28a gegen die Lamellen 21 gepresst werden kann, um diese zusammenzupressen. Die Lamellen 21 liegen mit der der Arbeitsfläche 23 gegenüberliegenden Kantenpartie 29 auf einem Kissen 22 aus elastischem Material auf. Mit zwei weiteren Schrauben 28b, 28c lässt sich der Stützboden 26 und damit die Vorspannung durch das Kissen 22 einstellen.
Die Masse der einzelnen Lamellen 21 ist derart, dass die dynamischen Reaktionskräfte der Vibration aufgenommen werden. Diese Lamellen können aus 1 mm starkem Messingblech gefertigt sein. Beispielsweise Abmessungen für eine solche Lamelle 21 können bei einer Breite der Arbeitsfläche 23 von 10 mm eine Höhe über alles von 45 mm und eine Breite von 40 mm haben. Für das Kissen 22 kann eine Gummiunterlage mit einer Rücksprunghärte von 40-45 Shore A verwendet werden. Die Länge der Arbeitsfläche 23 liegt in der Grössenordnung von 65 mm.
Versuche mit einem derartigen lamellierten Amboss 20 haben gezeigt, dass sowohl bei einer Fischgratnaht als auch einem Kreuzfalt mit je vier Lagen Material, unabhängig da2
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654 247
von, ob eine Aussenschicht aus Papier oder aus thermoplastischem Material vorhanden war, eine gasdichte Ver-schweissung erhalten wird.
Die Federung der einzelnen Lamellen 30 bzw. 40 lässt sich entweder mit einem separaten Federelement 31 gemäss Fig. 3 oder mit ausgestanzten Federfüssen 41,42 gemäss Fig. 4 erhalten. Eine weitere mögliche Ausführungsform einer Lamelle mit Eigenfederung ist in Fig. 5 dargestellt. Hier ist die Lamelle 50 mit zwei Einschnitten 51, 52 versehen, die parallel zu der der Arbeitsfläche 53 gegenüberliegenden Kantenpartie 54 angeordnet sind und sich auf etwa 2/3 der Länge überschneiden. Bei diesen erläuterten Ausführungsbeispielen sind gleichartige Gehäuse verwendet.
Eine davon abweichende Form ist in Fig. 6 dargestellt. Ein Winkelprofil 60 und ein Gegenhalterstab 61 sind mittels zwei Seitenwänden, die nicht dargestellt sind, zusammengehalten und dienen zur Halterung von einer Anzahl Lamellen 62 mit einer Arbeitsfläche 63 und einer Ausnehmung 64 zur Bildung einer federnden Stütze für die Arbeitsfläche 63".
Allen Ausführungsbeispielen ist gemeinsam, dass sich jede Lamelle einzeln auf die Dicke des zu verschweissenden
Materials einstellen kann. Damit wird ein gleichmässiger Gegendruck gegen die Sonotrode über die gesamte Nahtlänge bewirkt, so dass das Material der Schlauchpackung unabhängig von der jeweiligen Materialstärke bei Längsnähten, 5 Zwickelfalten und dgl. gleicherweise verschweisst wird.
Damit die Lamellen sich leicht gegeneinander verschieben lassen, um nur den durch das Kissen 22 oder die Federn 31 oder durch ihre Eigenfederung ausgeübten Druck zur Wirkung zu bringen, wird vorteilhafterweise wenigstens eine io der beiden Flächen von benachbarten Lamellen mit einer die Reibung vermindernden Schicht beaufschlagt. Diese Schicht kann als Belag aus einem geeigneten Material aufgebracht werden.
Bei einer Verspannung der Lamellen 21 mittels der Press-i5 wand 27 durch Einstellen einer Druckkraft mit der Schraube 28a, können sich die Lamellen 21 infolge Temperaturschwankungen lockern. Um dies zu verhindern, ist zwischen die Presswand 27 und das Lamellenpaket ein Federelement 32, beispielsweise ein Kissen aus elastischem Material, einge-20 setzt. Selbstverständlich kann ein solches Federelement auch bei allen übrigen Ausführungsformen vorhanden sein.
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2 Blatt Zeichnungen

Claims (10)

654 247 PATENTANSPRÜCHE
1. Ultraschall-Schweissvorrichtung zum Verschweissen von mehrlagig angeordneten Folien mit einer einstückigen, länglichen Sonotrode, dadurch gekennzeichnet, dass ein Amboss (20) aus einer Anzahl einzelner, gegeneinander verschieblich gehalterter Lamellen (21,30,40, 50, 62) gebildet ist, wobei die Stirnseiten (23, 53, 63) der genannten Lamellen den Gegenhalter zur Sonotrode (10) bilden und einzeln einer gegen die Sonotrode (10) gerichteten Kraft ausgesetzt sind.
2. Schweissvorrichtung nach Patentanspruch 1, dadurch gekennzeichnet, dass die einzelnen Lamellen (21, 30,40, 50, 62) je eine genügend grosse Masse aufweisen, um die von der Sonotrode (10) auf sie einwirkende Reaktionskraft der Schwingung aufzunehmen.
3. Schweissvorrichtung nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, dass wenigstens eine der beiden Flächen der genannten Lamellen mit einem die Reibung vermindernden Belag versehen ist.
4. Schweissvorrichtung nach Patentanspruch 1, dadurch gekennzeichnet, dass die Lamellen (21) mit ihrer der Sonotrode abgewandten Stirnseite (29) auf einem Kissen (22) aus elastischem Material abgestützt sind (Fig. 1,2).
5. Schweisseinrichtung nach Patentanspruch 1, dadurch gekennzeichnet, dass die Lamellen (30,40) auf Federelementen (31,41,42) abgestützt sind (Fig. 3,4).
6. Schweisseinrichtung nach Patentanspruch 5, dadurch gekennzeichnet, dass jede einzelne Lamelle (30,40) auf einem eigenen Federelement (31,41,42) abgestützt ist.
7. Schweisseinrichtung nach Patentanspruch 1, dadurch gekennzeichnet, dass die Lamellen (50,62) aus federndem Material bestehen und mit Einschnitten (51, 52,64) versehen sind, durch die eine Randpartie entlang der der Sonotrode (10) gegenüberliegenden Stirnseite (54, 65) der Lamelle (50, 62) federnd gehaltert ist.
8. Schweisseinrichtung nach einem der Patentansprüche 1 bis 7, gekennzeichnet durch wenigstens ein Federelement (32), um die einzelnen Lamellen (21,30,40, 50, 62) gegenein- . ander zu pressen.
9. Verwendung der Ultraschall-Schweissvorrichtung nach Patentanspruch 1 in der Verpackungsindustrie zum Verschweissen von Verpackungsbeuteln aus Folien, die wenigstens eine thermoplastische Schicht aufweisen.
10. Verwendung nach Patentanspruch 8 zur Bildung von Quersiegelnähten bei Schlauchbeuteln mit einer Längsnaht.
CH6996/81A 1981-11-02 1981-11-02 Ultraschall-schweissvorrichtung und verwendung derselben. CH654247A5 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH6996/81A CH654247A5 (de) 1981-11-02 1981-11-02 Ultraschall-schweissvorrichtung und verwendung derselben.
DE19823236164 DE3236164A1 (de) 1981-11-02 1982-09-30 Ultraschall-schweissvorrichtung und verwendung derselben
US06/435,337 US4444614A (en) 1981-11-02 1982-10-19 Ultrasonic welding device
IT8268259A IT8268259A0 (it) 1981-11-02 1982-10-28 Dispositivo di saldatura ad ultrasuoni e sua applicazione

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6996/81A CH654247A5 (de) 1981-11-02 1981-11-02 Ultraschall-schweissvorrichtung und verwendung derselben.

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DE3508630A1 (de) * 1983-09-28 1986-09-11 Pfanni-Werke Otto Eckart KG, 8000 München Verpackungshuelle fuer die portionierung eines trockenen, rehydratisierfaehigen nahrungsmittel
FR2571639A1 (fr) * 1984-10-12 1986-04-18 Couffin Jean Claude Enclume et sonotrode pour appareil de soudage a ultrasons
FR2587935B1 (fr) * 1985-09-30 1990-11-09 Cantenot Francois Procede de fabrication de sachets a soufflets a partir d'un film complexe constitue de deux films elementaires de matieres plastiques differentes accoles par application d'ultra-sons
DE4037888C2 (de) * 1990-11-28 1995-01-26 Branson Ultraschall Verfahren und Vorrichtung zum Herstellen von Filtereinheiten
DE4219784C1 (en) * 1992-06-17 1993-07-15 Maschinenfabrik Knaup Gmbh & Co, 3320 Salzgitter, De Ultrasonic-welding device with pipe-shaped base - has corrugated bearing area formed by external surface of helical spring with closely placed windings fixed in position by pins at housing
US5605026A (en) * 1994-02-02 1997-02-25 Tetra Laval Holdings & Finance S.A. Ultrasonic carton sealer
DE4420808A1 (de) * 1994-06-16 1995-12-21 Merz Verpackungsmaschinen Gmbh Siegelwerkzeug, insbesondere an einer Schlauchbeutel-Verpackungsmaschine
DE19505298A1 (de) * 1995-02-16 1996-08-22 Ips Int Packaging Syst Ultraschall-Siegelung
US5775055A (en) * 1997-02-21 1998-07-07 Tetra Laval Holdings & Finance, S. A. Ultrasonic sealing anvil
US5890347A (en) * 1997-10-06 1999-04-06 Tetra Laval Holdings & Finance Sa Method and apparatus for sealing a gabled container
JPH11240514A (ja) * 1998-02-26 1999-09-07 Nihon Tetrapak Kk 包装容器のシール装置
DE19904154A1 (de) * 1999-02-03 2000-08-17 Bosch Gmbh Robert Vorrichtung zum Verschließen von aus einem heißsiegelfähigen Material hergestellten Verpackungen
US6228195B1 (en) 1999-02-08 2001-05-08 Star Binding & Trimming Corp. Sonic sealed bias seam
US6523732B1 (en) * 2001-10-10 2003-02-25 Ford Global Technologies, Inc. Ultrasonic welding apparatus
DE10326320B4 (de) * 2003-06-11 2006-06-01 Widmann Maschinen E.K. Vorrichtung und Verfahren zum Herstellen von Pouchbeuteln
DE102006009890A1 (de) * 2006-03-03 2007-09-06 Rovema - Verpackungsmaschinen Gmbh Vorrichtung zum Verschweißen von Kunststoff
EP2457716B1 (de) * 2010-11-26 2013-03-06 UHLMANN PAC-SYSTEME GmbH & Co. KG Siegelelement zum Erzeugen glatter Prägefelder bei der Versiegelung von Folien
DE102011004002A1 (de) 2011-02-11 2012-08-16 Herrmann Ultraschalltechnik Gmbh & Co. Kg Verfahren zur Herstellung einer Quersiegelnaht sowie Quersiegelvorrichtung
WO2019238497A1 (en) * 2018-06-12 2019-12-19 Tetra Laval Holdings & Finance S.A. A method for sealing together a first section and a second section of a piece of packaging material, an anvil assembly and a system comprising such assembly
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US4444614A (en) 1984-04-24
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