EP1851037A1 - Ultrasonic welding device for forming welded seams on textiles - Google Patents

Ultrasonic welding device for forming welded seams on textiles

Info

Publication number
EP1851037A1
EP1851037A1 EP06707092A EP06707092A EP1851037A1 EP 1851037 A1 EP1851037 A1 EP 1851037A1 EP 06707092 A EP06707092 A EP 06707092A EP 06707092 A EP06707092 A EP 06707092A EP 1851037 A1 EP1851037 A1 EP 1851037A1
Authority
EP
European Patent Office
Prior art keywords
sonotrode
ultrasonic welding
welding device
anvil
belt
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.)
Withdrawn
Application number
EP06707092A
Other languages
German (de)
French (fr)
Inventor
Dietmar Heil
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.)
Jentschmann AG Zuerich
Original Assignee
Jentschmann AG Zuerich
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 Jentschmann AG Zuerich filed Critical Jentschmann AG Zuerich
Publication of EP1851037A1 publication Critical patent/EP1851037A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00—Details of garments or of their making
    • A41D27/24—Hems; Seams
    • A41D27/245—Hems; Seams made by welding or gluing
    • 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
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • 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
    • B29C66/40—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
    • B29C66/70—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
    • B29C66/729—Textile or other fibrous material made from plastics
    • 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
    • B29C66/81457—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 block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8227—Transmission mechanisms using 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83433—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts the contact angle between said rollers, cylinders or drums and said bands or belts being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93411—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the parts to be joined having different speeds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93451—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed by controlling or regulating the rotational speed, i.e. the speed of revolution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83441—Ball types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
    • B29C66/92611—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29K2313/00—Use of textile products or fabrics as reinforcement
    • 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
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • B29L2031/485—Jackets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

Disclosed is an ultrasonic welding device (1) for forming welded seams on textiles. Said ultrasonic welding device (1) comprises a sonotrode (7) and an anvil (8) made of an elastic material. A belt (21) that is guided across at least two pulleys (13, 15) can be used as an anvil (8). The strand (19) of the belt (21) contacts the periphery of the sonotrode (7) via an angle (α) and maintains the workpiece that lies therebetween in a clamped state in said zone during the welding process.

Description

Ultraschall-Schweißvorrichtung zur Bildung von Schweißnähten an Textilien Ultrasonic welding device for the formation of welds on textiles
Gegenstand der Erfindung ist eine Ultraschall-Schweißvorrichtung zur Bildung von Schweißnähten an Textilien gemäß Oberbegriff des Patentanspruchs 1.The invention relates to an ultrasonic welding apparatus for forming welds on textiles according to the preamble of patent claim 1.
Das Verschweißen von zwei Werkstücken entlang deren Kanten mittels Ultraschall ist bekannt. Beim Verschweißen von Zuschnitten für Textilien, z.B. für wasserdichte Bekleidungstextilien, ist es bekannt, die beiden zu verschweißenden Kanten sich überlappend zwischen einer Sonotrode und einem der Sonotrode gegenüberliegenden Amboss hindurch zu führen. Mit einem scheibenförmigen Amboss, der an der Sonotrode anliegt, können ohne weiteres auch bogenförmige Nähte erzeugt werden. Die solcherart hergestellten Nähte können nicht unter allen Umständen den Anforderungen genügen, da die Verschweißung nicht absolut gleichmäßig erzeugbar ist.The welding of two workpieces along their edges by means of ultrasound is known. When welding blanks for textiles, e.g. for waterproof clothing textiles, it is known to pass the two edges to be welded overlapping each other between a sonotrode and an anvil opposite the sonotrode. With a disc-shaped anvil, which rests against the sonotrode, also arcuate seams can be produced easily. The seams produced in this way can not meet the requirements under all circumstances, since the welding is not absolutely uniformly generated.
Eine Aufgabe der vorliegenden Erfindung besteht nun darin, eine Ultraschall- Schweißvorrichtung der genannten Gattung derart weiterzubilden, dass Schweißnähte von optimaler Gleichmäßigkeit erzeugbar sind.An object of the present invention is to develop an ultrasonic welding device of the type mentioned in such a way that welds of optimal uniformity can be generated.
Gelöst wird diese Aufgabe durch eine Ultraschall-Schweißvorrichtung mit den Merkmalen des Patentanspruchs 1. Vorteilhafte Ausgestaltungen der Ultraschall-Schweißvorrichtung sind in den abhängigen Ansprüchen umschrieben.This object is achieved by an ultrasonic welding apparatus with the features of claim 1. Advantageous embodiments of the ultrasonic welding apparatus are described in the dependent claims.
Durch die Abkehr von einem starren und aus einem harten Material bestehenden Amboss und die Verwendung eines eine elastische Oberfläche aufweisenden Amboss kann ein über eine größere Querschnittsfläche verteilter Energieeintrag in das Werkstück erreicht werden.By turning away from a rigid and made of a hard material anvil and the use of an elastic surface having anvil distributed over a larger cross-sectional area of energy input into the workpiece can be achieved.
Bei Verwendung eines zwischen mehreren beabstandeten Haltepunkten eingespannten Riemens wird die Energieeintragung auf der Sonotrode über einen Bogen von ca. 30° verteilt. Überaschenderweise kann bei einer solcherart aufgebauten Ultraschall- Schweißvorrichtung mit wesentlich weniger Energie dasselbe Resultat erreicht werden. Besonders vorteilhaft hat sich als Amboss ein um mindestens zwei Riemenscheiben umlaufender Keilriemen erwiesen. Wenn der Keilriemen um drei Riemenscheiben herumgeführt wird, von denen zwei in gleichem Abstand zu einer Arbeitsfläche liegen und die dritte darüber, kann eine gute Aufsicht auf den Schweißpunkt beim Arbeiten erreicht werden.When using a belt clamped between a plurality of spaced stops, the energy input on the sonotrode is distributed over an arc of about 30 °. Surprisingly, the same result can be achieved with substantially less energy in such a constructed ultrasonic welding device. Particularly advantageous has proved to be an anvil circulating around at least two pulleys V-belt. If the V-belt is guided around three pulleys, two of which are equidistant from a working surface and the third over, good supervision can be achieved on the welding point while working.
Mit einer über die Arbeitsfläche hinausragenden Sonotrode und an der Arbeitsfläche bzw. einem auf der Arbeitsfläche liegenden Werkstück anliegenden Riemenscheibe kann das als Amboss dienende Trum in einem Bogen über die Peripherie-Sonotrode geführt werden. Die Sonotrode kann stationär feststehend angeordnet oder auch bewegbar, insbesondere schwenkbar sein. Des Weiteren ist die Sonotrode bevorzugt scheibenförmig (eckige oder runde Scheibenform) oder sphärisch rund, z.B. rollenförmig oder kugelig.With a projecting beyond the work surface sonotrode and on the work surface or a lying on the work surface workpiece pulley serving as an anvil strand can be performed in an arc on the peripheral sonotrode. The sonotrode may be stationarily arranged stationary or also movable, in particular pivotable. Furthermore, the sonotrode is preferably disk-shaped (angular or round disk shape) or spherically round, e.g. roll-shaped or spherical.
Anhand eines illustrierten Ausführungsbeispiels wird die Erfindung näher erläutert. Es zeigt die eineReference to an illustrated embodiment, the invention is explained in detail. It shows the one
Figur eine Seitenansicht einer schematisch dargestellten Ultraschall-Schweißvorrichtung, welche in einen Arbeitstisch eingebaut ist.Figure shows a side view of a schematically illustrated ultrasonic welding device, which is installed in a work table.
In der einzigen Figur ist mit Bezugszeichen 1 eine erfindungsgemäße Ultraschall- Schweißvorrichtung bezeichnet, welche in einer Ausnehmung 3 in einem Arbeitstisch 5 angeordnet ist.In the single figure, reference numeral 1 denotes an inventive ultrasonic welding device, which is arranged in a recess 3 in a work table 5.
Die Ultraschall-Schweißvorrichtung 1 umfasst eine gemäß diesem Ausführungsbeispiel scheibenförmige Sonotrode 7, welche durch einen geeigneten, aus dem Stand der Technik bekannten Schall-Generator 9 (schematisch als Rechteck dargestellt) angeregt wird. Als Sonotrode 7 wird dabei im Allgemeinen eine Komponente verstanden, welche die von dem Schall-Generator 9 erzeugten Ultraschallschwingungen an ein zu beschallendes Werkstück weiterleitet. Der Scheitel S der Sonotrode 7 überragt die Oberfläche 11 des Arbeitstisches 5 um einen Betrag a.The ultrasonic welding device 1 comprises a disk-shaped sonotrode 7 according to this exemplary embodiment, which is excited by a suitable sound generator 9 known from the prior art (shown schematically as a rectangle). As a sonotrode 7 is generally understood a component which forwards the ultrasonic vibrations generated by the sound generator 9 to a workpiece to be sonicated. The vertex S of the sonotrode 7 projects beyond the surface 11 of the work table 5 by an amount a.
Seitlich beabstandet zum Scheitel S der Sonotrode 7 sind als Amboss 8 zwei Riemenscheiben 13 und 15 und über diesen eine dritte Riemenscheibe 17 auf einem nicht näher dargestellten Gestell angeordnet. Mindestens eine der Riemenscheiben 13 ist durch einen Antriebsmotor M-) antreibbar (Motor Mi nur schematisch angedeutet). Die dreiSpaced laterally to the apex S of the sonotrode 7 are arranged as an anvil 8 two pulleys 13 and 15 and on this a third pulley 17 on a frame, not shown. At least one of the pulleys 13 can be driven by a drive motor M-) (motor Mi indicated only schematically). The three
Riemenscheiben 13, 15, 17 tragen einen Riemen 21 , der durch nicht näher bezeichnetePulleys 13, 15, 17 carry a belt 21 which by unspecified
Mittel, beispielsweise eine federnde Lagerung der Riemenscheibe 17, gespannt gehalten wird. Die Sonotrode 7 ist ebenfalls antreibbar (schematisch dargestellt) durch einen Motor M2- Je nach Abstand der beiden Riemenscheiben 13 und 15 bzw. des Abstandes a, mit dem die Sonotrode 7 die Oberfläche 11 des Arbeitstisches 5 überragt, umschlingt das untere Trum 19 zwischen den beiden Riemenscheiben 13, 15 den Scheitelbereich der Sonotrode 7 in einem größeren oder kleineren Winkel α. In einer bevorzugten Ausgestaltung beträgt der Umschlingungswinkel, d.h. der Winkel, über den der Riemen 21 auf der Peripherie der Sonotrode 7 anliegt, ca. 30°.Means, such as a resilient mounting of the pulley 17, is kept taut. The sonotrode 7 is also drivable (shown schematically) by a motor M 2 - Depending on the distance between the two pulleys 13 and 15 and the distance a, with the sonotrode 7, the surface 11 of the work table 5 surmounted, wraps around the lower run 19 between the two pulleys 13, 15 the apex region of the sonotrode 7 at a larger or smaller angle α. In a preferred embodiment, the wrap angle, ie the angle over which the belt 21 rests on the periphery of the sonotrode 7, is approximately 30 °.
Die Drehzahl der beiden Antriebsmotoren M1 und M2 ist einzeln ein- und verstellbar, so dass zwischen den beiden sich kontaktierenden Teilen der Sonotrode 7 und des Riemens 21 auch eine minimale Differenzgeschwindigkeit (ni - n2) gefahren werden kann, um einen Ausgleich der Längen der Oberflächen eines Werkstücks 23, das über die scheibenförmige Sonotrode 7 geführt wird, auszugleichen.The speed of the two drive motors M 1 and M 2 is individually adjustable and adjustable, so that between the two contacting parts of the sonotrode 7 and the belt 21 and a minimum differential speed (ni - n 2 ) can be driven to compensate for Lengths of the surfaces of a workpiece 23, which is guided over the disc-shaped sonotrode 7, compensate.
Im weiteren sind nicht näher dargestellte Mittel vorhanden, um den Abstand der Sonotrode 7 zum Amboss 8 und damit die Umschlingung des Riemens 21 an der Peripherie der Sonotrode 7 einzustellen.In addition, means not shown in detail are provided to adjust the distance of the sonotrode 7 to the anvil 8 and thus the looping of the belt 21 at the periphery of the sonotrode 7.
Nachfolgend wird die Funktionsweise der Vorrichtung näher erläutert.The operation of the device will be explained in more detail below.
Das schematisch durch zwei parallele Linien angedeutete Werkstück 23, z. B. der Verbindungsbereich eines Ärmels und eines Brustteils einer Regenjacke, wird zwischen die Riemenscheibe 13 und die Oberfläche 11 des Arbeitstisches 5 geschoben und vom umlaufenden Riemen 21 in Richtung des Pfeiles T transportiert. Vom Arbeitstisch 5 gelangt es anschließend in den Spickel zwischen der Oberfläche der Sonotrode 7 und der Unterseite des Trums 19 des Riemens 21. Über den Wirkbereich α werden die beiden Lagen des Werkstücks 23 fest aneinander gepresst und durch die von der Sonotrode 7 ausgehenden vorzugsweise rechtwinklig ins Werkstück 23 eingebrachten Schwingungen miteinander verschweißt. Dabei nimmt die Intensität der durch die Schwingungen erzeugten Wärme von der Eingangsseite (Einlaufspickel 25) bis zum Scheitel S zu und danach bis zum ausgangsseitigen Spickel 27 sukzessive wieder ab. Im Klemmbereich zwischen der zweiten Riemenscheibe 15 bzw. dem darüber geführten Riemen 21 und der Oberfläche 11 des Arbeitstisches 5 wird das Werkstück 23 weitere durch nicht dargestellte Transportmittel oder von Hand geschoben.The schematically indicated by two parallel lines workpiece 23, z. As the connecting portion of a sleeve and a chest part of a rain jacket is pushed between the pulley 13 and the surface 11 of the work table 5 and transported by the rotating belt 21 in the direction of the arrow T. From the work table 5, it then passes into the Spickel between the surface of the sonotrode 7 and the underside of the run 19 of the belt 21. About the effective range α, the two layers of the workpiece 23 are pressed firmly against each other and outgoing from the sonotrode 7 preferably at right angles into Workpiece 23 welded vibrations welded together. In this case, the intensity of the heat generated by the vibrations increases from the input side (inlet pick-up 25) to the apex S and then successively back to the output-side chip 27. In the clamping area between the second pulley 15 and the guided over belt 21 and the surface 11 of the work table 5, the workpiece 23 is pushed further by means not shown transport or by hand.
In einer besonders vorteilhaften Ausgestaltung sind die Sonotrode 7 und die drei Riemenscheiben 13, 15, 17 auf einem gemeinsamen, hier nicht dargestellten Träger gehalten, der um die vertikale Achse A schwenkbar ist. Dies ermöglicht es, mit der Vorrichtung 1 der Kontur einer Naht auf dem Werkstück 23 nachzufahren. Selbstverständlich kann auch das Werkstück 23 entsprechend geführt werden, wenn die Sonotrode 7 und der Riemen 21 ortsfest angeordnet sind.In a particularly advantageous embodiment, the sonotrode 7 and the three pulleys 13, 15, 17 on a common, not shown here carrier held, which is pivotable about the vertical axis A. This makes it possible to follow the contour of a seam on the workpiece 23 with the device 1. Of course, the workpiece 23 can be performed accordingly when the sonotrode 7 and the belt 21 are arranged stationary.
Die Peripherie der Sonotrode 7 ist beispielsweise 8 mm breit. Der Riemen 21 , der als Flachriemen aus Kunststoff, Metall, Silikon oder einem sonstigen elastischen Material oder bevorzugterweise als Keilriemen ausgebildet ist, weist die gleiche Breite von 8 mm auf. Er kann einen rechteckigen Querschnitt oder eine V-Form aufweisen. Selbstverständlich könnten auch kleinere oder größere Arbeitsbreiten vorgesehen werden, wenn dies durch die zu bildende Naht am Werkstück 23 erforderlich ist.The periphery of the sonotrode 7 is for example 8 mm wide. The belt 21, which is formed as a flat belt made of plastic, metal, silicone or other elastic material or preferably as a V-belt, has the same width of 8 mm. It may have a rectangular cross-section or a V-shape. Of course, smaller or larger working widths could be provided, if this is required by the seam to be formed on the workpiece 23.
Ebenso kann die Sonotrode 7 stationär feststehend ausgestaltet sein. Darüber hinaus sind auch alternative Ausgestaltungen der Sonotrode 7, z. B. in Rollenform oder Kugelform, möglich.Likewise, the sonotrode 7 can be designed stationary fixed. In addition, alternative embodiments of the sonotrode 7, z. B. in roll form or spherical shape, possible.
Anstelle der Riemenscheiben 13, 15, 17 können auch andere Haltemittel zum Halten bzw. Spannen des Riemens 21 verwendet werden.Instead of the pulleys 13, 15, 17 and other holding means for holding or tensioning the belt 21 may be used.
Schließlich ist die Erfindung nicht auf die Verwendung des in der Figur dargestellten Riemens 21 als Amboss beschränkt, sondern im Rahmen der vorliegenden Erfindung kann grundsätzlich jeder beliebig ausgestaltete Amboss eingesetzt werden, sofern er aus einem elastischen Material besteht. Finally, the invention is not limited to the use of the belt 21 shown in the figure as the anvil, but in principle any arbitrarily configured anvil can be used in the context of the present invention, provided that it consists of an elastic material.

Claims

PATENTANSPRÜCHE
1. Ultraschall-Schweißvorrichtung (1) zur Bildung von Schweißnähten an Textilien, umfassend eine Sonotrode (7) und einen an die Sonotrode anpressbaren Amboss (8) zur Abstützung des zwischen der Sonotrode (7) und dem Amboss (8) hindurchführbaren Werkstücks (25), dadurch gekennzeichnet, dass der Amboss (8) aus einem elastischen nachgebenden Material besteht.An ultrasonic welding apparatus (1) for forming welds on textiles, comprising a sonotrode (7) and an anvil (8) which can be pressed against the sonotrode for supporting the workpiece (25) which can be passed between the sonotrode (7) and the anvil (8) ), characterized in that the anvil (8) consists of an elastically yielding material.
2. Ultraschall-Schweißvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der Amboss (8) einen Riemen (21) aus einem elastischen Material umfasst, der zwischen Haltemitteln (13, 15) eingespannt ist.2. Ultrasonic welding apparatus according to claim 1, characterized in that the anvil (8) comprises a belt (21) made of an elastic material, which is clamped between holding means (13, 15).
3. Ultraschall-Schweißvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Riemen (21) als endloser Riemen ausgestaltet ist, welcher um mehrere beabstandet angeordnete Riemenscheiben (13, 15) gelegt ist.3. ultrasonic welding apparatus according to claim 2, characterized in that the belt (21) is designed as an endless belt, which is placed around a plurality of spaced pulleys (13, 15).
4. Ultraschall-Schweißvorrichtung nach Anspruch 2 oder Anspruch 3, dadurch gekennzeichnet, dass der Riemen (21) im Querschnitt eine Keilform oder ein Rechteck aufweist.4. ultrasonic welding apparatus according to claim 2 or claim 3, characterized in that the belt (21) has a wedge shape or a rectangle in cross section.
5. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass der Riemen (21) drei Riemenscheiben (13, 15, 17) umschlingt.5. Ultrasonic welding device according to one of claims 3 or 4, characterized in that the belt (21) wraps around three pulleys (13, 15, 17).
6. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass mindestens eine der Riemenscheiben (13, 15, 17) antreibbar ist und dass eine Antriebsdrehzahl der mindestens einen Riemenscheibe (13) ein- und verstellbar ist.6. Ultrasonic welding device according to one of claims 3 to 5, characterized in that at least one of the pulleys (13, 15, 17) is drivable and that a drive speed of at least one pulley (13) is switched on and adjustable.
7. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Sonotrode (7) antreibbar ist und dass eine Antriebsdrehzahl der Sonotrode ein- und verstellbar ist.7. Ultrasonic welding device according to one of claims 1 to 6, characterized in that the sonotrode (7) is drivable and that a drive speed of the sonotrode is switched on and adjustable.
8. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Sonotrode (7) in einer Ausnehmung (3) unterhalb eines Arbeitstisches (5) angeordnet ist, wobei deren Scheitel (S) eine Arbeitsfläche (11) des Arbeitstisches (5) um einen Betrag (a) überragt, und dass ein an der Sonotrode (7) anliegendes Trum (19) des Ambosses (8) durch einen die Arbeitsfläche (11) überragenden Kreisabschnitt der Sonotrode (7) ausgelenkt wird und die Sonotrode (7) in einem Winkelbereich (α) umschlingt.8. Ultrasonic welding device according to one of claims 1 to 7, characterized in that the sonotrode (7) in a recess (3) below a Working table (5) is arranged, wherein the vertex (S) a work surface (11) of the work table (5) surmounted by an amount (a), and that on the sonotrode (7) fitting the run (19) of the anvil (8) is deflected by a circular section of the sonotrode (7) projecting beyond the working surface (11) and wraps around the sonotrode (7) in an angular range (α).
9. Ultraschall-Schweißvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass das ausgelenkte Trum (19) des Ambosses (8) die Peripherie der Sonotrode (7) über einen Winkel (α) von 20° bis 40° umschlingt.9. Ultrasonic welding device according to claim 8, characterized in that the deflected run (19) of the anvil (8) wraps around the periphery of the sonotrode (7) through an angle (α) of 20 ° to 40 °.
10. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass ein Abstand zwischen der Sonotrode (7) und dem Amboss (8) einstellbar ist.10. Ultrasonic welding device according to one of claims 1 to 9, characterized in that a distance between the sonotrode (7) and the anvil (8) is adjustable.
11. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Sonotrode (7) und der Amboss (8) gemeinsam um eine vertikale Achse (A) schwenkbar gelagert sind.11. Ultrasonic welding device according to one of claims 1 to 10, characterized in that the sonotrode (7) and the anvil (8) are pivotally mounted together about a vertical axis (A).
12. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Sonotrode (7) eine feststehende Sonotrode ist.12. Ultrasonic welding device according to one of claims 1 to 10, characterized in that the sonotrode (7) is a fixed sonotrode.
13. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Sonotrode (7) eine runde oder rollenförmige Sonotrode ist.13. Ultrasonic welding device according to one of claims 1 to 12, characterized in that the sonotrode (7) is a round or roller-shaped sonotrode.
14. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Sonotrode (7) eine scheibenförmige Sonotrode ist.14. Ultrasonic welding device according to one of claims 1 to 12, characterized in that the sonotrode (7) is a disk-shaped sonotrode.
15. Ultraschall-Schweißvorrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass der Amboss (8) aus einem weichen elastischen Material besteht. 15. Ultrasonic welding device according to one of claims 1 to 13, characterized in that the anvil (8) consists of a soft elastic material.
EP06707092A 2005-02-18 2006-02-20 Ultrasonic welding device for forming welded seams on textiles Withdrawn EP1851037A1 (en)

Applications Claiming Priority (2)

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CH2872005 2005-02-18
PCT/EP2006/001510 WO2006087224A1 (en) 2005-02-18 2006-02-20 Ultrasonic welding device for forming welded seams on textiles

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EP1923201A1 (en) 2006-11-20 2008-05-21 Jentschmann AG Zürich Ultrasonic welding device
WO2009019724A1 (en) * 2007-08-03 2009-02-12 S.M.R.E. Engineering Di Mazzini S. & C. S.N.C. Device for multiple ultrasonic welding, in particular of layered elements
WO2009019723A1 (en) * 2007-08-03 2009-02-12 S.M.R.E. Engineering Di Mazzini S.& C. S.N.C. Device for ultrasonic welding, in particular of layered elements
US11351737B2 (en) 2018-04-30 2022-06-07 Kimberly-Clark Worldwide, Inc. Energy apparatus and methods of providing energy to an item
US20230059804A1 (en) * 2021-08-18 2023-02-23 Agile Ultrasonics Corp. Ultrasonic consolidation of materials

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AT192114B (en) * 1953-10-10 1957-09-25 Steffen Hammer Method and device for welding
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DE3146585A1 (en) * 1981-11-25 1983-06-01 Michael Hörauf Maschinenfabrik, 7334 Süssen Apparatus for ultrasonic welding
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