CH615965A5 - Ultrasonic sewing machine - Google Patents

Ultrasonic sewing machine Download PDF

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Publication number
CH615965A5
CH615965A5 CH864777A CH864777A CH615965A5 CH 615965 A5 CH615965 A5 CH 615965A5 CH 864777 A CH864777 A CH 864777A CH 864777 A CH864777 A CH 864777A CH 615965 A5 CH615965 A5 CH 615965A5
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CH
Switzerland
Prior art keywords
welding
weld metal
sewing machine
plunger
sonotrode
Prior art date
Application number
CH864777A
Other languages
German (de)
Inventor
Laszlo Sandor Horvath
Original Assignee
Gegauf Fritz Ag
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Filing date
Publication date
Application filed by Gegauf Fritz Ag filed Critical Gegauf Fritz Ag
Priority to CH864777A priority Critical patent/CH615965A5/en
Publication of CH615965A5 publication Critical patent/CH615965A5/en

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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
    • B29C65/08—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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7443—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc by means of 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7891—Means for handling of moving sheets or webs of discontinuously moving sheets or webs
    • 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
    • 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
    • B29C66/816—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
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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

Abstract

The machine serves to intermittently weld and/or separate ultrasonically weldable textile material and thermoplastic film. Its construction largely corresponds to that of conventional thread-sewing machines. The welding tools are arranged in it in place of the known sewing tools or directly adjacent to the latter. A plunger (1) is allocated to the welding sonotrode (2), vibrating with ultrasonic frequency, under the bearing plate (14) serving as working surface. The plunger (1) is provided with an interchangeable punch (3) directed towards the welding sonotrode. This punch interacting with the welding sonotrode has a welding pattern and/or a cutting edge. A conventional needle-bar drive with a cam plate or crank enables the plunger to be set in oscillating movement. In the process, the sequence of movement runs in synchronism with that of a transport member (13) which is intended for the intermittent advance of the material to be welded and is identical to that of a conventional thread-sewing machine. Depending on the design of the machine, the material to be worked can be simultaneously sewn, welded and/or cut off. The machine permits neat welding even in the case of a complicated weld path or highly irregular shape of the ultrasonically weldable material. <IMAGE>

Description

Bei Anordnung der Schweisswerkzeuge hinter den Nähwerkzeugen wird die Herstellung von wasserdichten Nähten in beschichtetem Material ermöglicht, indem die Fadennaht durch einen entsprechend ausgebildeten Schweisstempel zusätzlich verschweisst werden kann (besonders vorteilhaft für Sport- und Regenbekleidung etc.). Eine weitere Anwendungsmöglichkeit für kombiniertes Nähen und Schweissen ist das Vernähen und gleichzeitige Schweissen oder Abtrennen von Gewirken. Die Ränder können nicht mehr auffransen und Laufmaschen werden verhindert. Je nach Art und Verwendung des ultraschallschweissbaren Materials kann der gleiche Effekt When the welding tools are arranged behind the sewing tools, the production of waterproof seams in coated material is made possible by the thread seam being additionally welded using a suitably designed welding stamp (particularly advantageous for sports and rainwear, etc.). Another application for combined sewing and welding is sewing and simultaneous welding or cutting off knitted fabrics. The edges can no longer fray and running stitches are prevented. Depending on the type and use of the ultrasonically weldable material, the same effect can be achieved

auch ohne Fadennaht erzielt werden, indem der Schweisstempel mit einer separat einstellbaren Schneidkante zum gleichzeitigen Abtrennen des Materials während dem Schweissvorgang versehen ist. Durch die austauschbare Anordnung des mit dem Schweissmuster versehenen Stempels kann eine Vielzahl von verschiedenen Schweissmustern, wahlweise mit Fadennähten kombiniert und gegebenenfalls unter gleichzeitigem Abtrennen des Schweissgutes hergestellt werden, wobei das Abtrennen in Abhängigkeit von der Form des Trennstempels geradlinig, gezackt, gewellt oder mit irgend einem anderen Kantenverlauf erfolgen kann.Die stufenlose Einstellbarkeit der Vorschublänge der bekannten Transportvorrichtung einer Nähmaschine ergibt weitere Variationsmöglichkeiten, so dass sowohl aus einzelnen im Abstand voneinander angeordneten Schweisstellen bestehende oder kontinuierlich verlaufende, ununterbrochene Schweiss- und/oder Trennähte herstellbar sind. Um eine optimale Anpassung der Schweissbedingungen an das zu verarbeitende Schweissgut zu ermöglichen, sind Einstellmittel zum Einstellen der Eindringtiefe des Stempels in das Schweissgut und zum Einstellen des auf das Schweissgut ausgeübten Stempeldruckes vorgesehen. can also be achieved without a thread seam by providing the welding stamp with a separately adjustable cutting edge for simultaneous cutting of the material during the welding process. Due to the exchangeable arrangement of the stamp provided with the welding pattern, a large number of different welding patterns, optionally combined with thread seams and optionally with simultaneous cutting of the weld metal, can be produced, the cutting depending on the shape of the cutting stamp in a straight line, serrated, corrugated or with any one The infinitely variable adjustment of the feed length of the known transport device of a sewing machine results in further variation possibilities, so that both existing and continuously running, uninterrupted welding and / or separating seams can be produced from individual welding points arranged at a distance from one another. In order to enable the welding conditions to be optimally adapted to the weld metal to be processed, setting means are provided for setting the depth of penetration of the stamp into the weld metal and for adjusting the stamp pressure exerted on the weld metal.

Die übrigen zum Ultraschallschweissen erforderlichen Bedingungen, wie Leistung des Ultraschallgerätes und Ultraschallfrequenz sind durch den an die Schweiss-Sonotrode angeschlossenen Generator zu erfüllen. Derartige Generatoren sind allgemein bekannt und gebräuchlich. Die Amplitude der Schweiss-Sonotrode wird in bekannter Weise durch entsprechende Gestaltung der Sonotrode bestimmt. Die Anpassung der Schweissintensität an die wechselnde Schweissgeschwindigkeit, welche von der Maschinengeschwindigkeit abhängt, wird durch ebenfalls bekannte Steuermittel sichergestellt. Der eigentliche Ultraschall-Schweissvorgang ist bekannt und bedarf keiner näheren Erläuterung. The other conditions required for ultrasonic welding, such as the power of the ultrasonic device and the ultrasonic frequency, must be met by the generator connected to the welding sonotrode. Generators of this type are generally known and customary. The amplitude of the welding sonotrode is determined in a known manner by appropriate design of the sonotrode. The adaptation of the welding intensity to the changing welding speed, which depends on the machine speed, is ensured by control means which are also known. The actual ultrasonic welding process is known and requires no further explanation.

Ein Ausführungsbeispiel der Erfindung ist auf der beigefügten Zeichnung dargestellt und nachfolgend beschrieben: Der Stössel 1 ist anstelle der Nadelstange einer Nähma schine oder in deren unmittelbaren Nähe angeordnet und wird vom bekannten Antriebsmechanismus für die Nadelstange, gegebenenfalls unter Verwendung einer zusätzlichen Kurven scheibe, in vertikal oszillierende Bewegung versetzt, in derem tiefstem Punkt die Schweissung erfolgt. Der Aufbau einer Nähmaschine sowie deren Antriebsmechanismus für die Nadelstange sind hinlänglich bekannt und daher in der Zeich nung nicht dargestellt. Die Stösselbewegung wird über ein mittels Stift 5 mit dem Stössel 1 fest verbundenes Gewinde stück 4 und eine auf diesem verstellbar angeordnete Über wurfmutter 6 auf eine auf dem Stössel 1 gleitend geführte, zwischen Überwurfmutter 6 und Gewindestück 4 vertikal bewegliche Trägerhülse 7 übertragen.Die Trägerhülse 7 wird durch eine zwischen der Überwurfmutter 6 und einer auf der Trägerhülse 7 vertikal einstellbaren Stellmutter 9 angeordnete je gegen eine Unterlagscheibe 12 anliegende Schraubenfeder 11 in Richtung des Schweissgutes gedrückt und ist durch den Führungsstift 8 gegen Verdrehen gesichert. An embodiment of the invention is shown in the accompanying drawing and described below: The plunger 1 is in place of the needle bar of a sewing machine or in its immediate vicinity and is disc from the known drive mechanism for the needle bar, possibly using an additional curve, set in vertical oscillating motion, in the lowest point of which the welding takes place. Building a Sewing machine and its drive mechanism for the Needle bars are well known and therefore not shown in the drawing. The plunger movement is transmitted via a threaded piece 4, which is fixedly connected to the plunger 1 by means of a pin 5, and a union nut 6, which is arranged on the plunger in an adjustable manner, is transmitted to a carrier sleeve 7 which is slidably guided on the plunger 1 and is vertically movable between the union nut 6 and the threaded piece 4 is by a between the union nut 6 and one on the Carrier sleeve 7 vertically adjustable adjusting nut 9 arranged against a washer 12 and helical spring 11 pressed in the direction of the weld metal and is secured by the guide pin 8 against rotation.

Am unteren Ende der Trägerhülse 7 ist der austauschbare Stempel 3 gegen Verdrehen gesichert angeordnet und wird mittels der Befestigungsmutter 10 fest mit der Trägerhülse 7 verbunden. Der Stempel 3 durchgreift einen federnd gegen das Schweissgut anliegenden Niederhalter 15, welcher die Funktion des Nähfusses aufweist, und drückt das Schweissgut intermittierend gegen die, eine Öffnung der Auflageplatte 14 durchgreifende, Schweiss-Sonotrode 2, welche durch bekannte, nicht dargestellte Mittel in Ultraschall-Schwingungen versetzt wird. Unterhalb der Auflageplatte 14, welche der Stichplatte einer Nähmaschine entspricht, ist die bekannte, nicht gezeichnete Transportvorrichtung angeordnet, deren Transportorgan 13 die Auflageplatte 14 von unten her durchgreift und in den Schweisspausen in bekannter Weise für den intermittierenden Transport des zu verarbeitenden Materials sorgt.Die Bewegungsvorgänge der Antriebsmechanismen für den Stössel 1 und das Transportorgan 13 sind derart miteinander synchronisiert, dass das Schweissgut während des Schweissvorganges durch den Niederhalter 15 und die Auflageplatte 14 unbeweglich festgehalten wird und erst nach Abheben des Stössels 1 durch das durch die Auflageplatte 14 hindurchtretende Transportorgan 13 um einen, der eingestellten Vorschublänge der Maschine entsprechenden Schritt weiterbewegt wird. At the lower end of the carrier sleeve 7, the interchangeable punch 3 is arranged secured against rotation and is firmly connected to the carrier sleeve 7 by means of the fastening nut 10. The stamp 3 passes through a holding-down device 15 which resiliently rests against the weld metal and has the function of the presser foot, and intermittently presses the weld metal against the welding sonotrode 2 which passes through an opening in the support plate 14 and which is ultrasonically processed by known means (not shown). Vibrations is set. Below the support plate 14, which corresponds to the stitch plate of a sewing machine, the known transport device, not shown, is arranged, the transport member 13 of which passes through the support plate 14 from below and ensures the intermittent transport of the material to be processed in the welding breaks in a known manner The drive mechanisms for the plunger 1 and the transport member 13 are synchronized with one another in such a way that the weld metal is immovably held during the welding process by the holding-down device 15 and the support plate 14 and only after lifting the plunger 1 by the transport member 13 passing through the support plate 14 , the set feed length of the machine is moved one step further.

Die Eindringtiefe des Stempels 3 in das nicht dargestellte Schweissgut kann durch Verdrehen der Überwurfmutter 6 auf dem Gewindestück 4 eingestellt werden. Das Verdrehen der mit nichtgezeichneten Sicherungsmitteln versehenen Überwurfmutter 6 bewirkt ein axiales Verschieben der Trägerhülse 7 auf dem Stössel 1 und damit eine Veränderung des Abstandes zwischen dem Stempel 3 und der Schweiss Sonotrode 2. Der Anpressdruck des Stempels 3 gegen das Schweissgut wird durch die Schraubenfeder 11 aufgebracht, welche über die Unterlagscheibe 12 und die Stellmutter 9 auf die Trägerhülse 7 und damit auf den mit dieser verbundenen Stempel 3 wirkt. Durch Verdrehen der mit nicht gezeichneten Sicherungsmitteln versehenen Stellmutter 9 kann die Schraubenfeder 11 gespannt oder entspannt werden, wodurch auch der Anpressdruck des Stempels 3 auf das Schweissgut entsprechend verändert wird. The depth of penetration of the punch 3 into the weld metal, not shown, can be adjusted by turning the union nut 6 on the threaded piece 4. The twisting of the union nut 6, which is not shown with securing means, causes an axial displacement of the carrier sleeve 7 on the plunger 1 and thus a change in the distance between the stamp 3 and the welding sonotrode 2. The contact pressure of the stamp 3 against the weld metal is applied by the coil spring 11 which acts on the carrier sleeve 7 and thus on the stamp 3 connected to it via the washer 12 and the adjusting nut 9. By turning the adjusting nut 9, which is not shown with securing means, the helical spring 11 can be tensioned or relaxed, as a result of which the contact pressure of the stamp 3 on the weld metal is changed accordingly.

Das Zusammenwirken der Bewegungen des durch eine Kurvenscheibe oder Kurbel in oszillierende Bewegung versetzten Stössels 1 und des bekannten, eine Rechteckbewegung ausführenden Transportorgans 13 bedarf keiner näheren Erläuterung. Es ist klar, dass die Bewegungsabläufe durch entsprechende Gestaltung der dazu benützten Kurvenscheiben oder Kurbeln so ausgelegt sind, dass die Stillstandsphase der Transportvorrichtung optimal für den Schweissvorgang ausge nützt wird, so dass auch bei hoher Geschwindigkeit eine einwandfreie Verschweissung erfolgen kann. The interaction of the movements of the tappet 1, which is set into oscillating motion by a cam disc or crank, and the known transport element 13, which performs a rectangular movement, requires no further explanation. It is clear that the movement sequences are designed by appropriate design of the cam discs or cranks used so that the standstill phase of the transport device is optimally used for the welding process, so that a perfect welding can be carried out even at high speed.

Claims (6)

PATENTANSPRÜCHEPATENT CLAIMS 1. Ultraschall-Nähmaschine zum intermittierend stellenweisen Verschweissen und/oder Abtrennen von ultraschallschweissbarem Textilmaterial und thermoplastischer Folie mit Hilfe von Ultraschall-Schweisswerkzeugen, dadurch gekennzeichnet, dass eine mit Ultraschall in Vibration versetzbare, als Amboss wirkende Schweiss-Sonotrode (2) unter einer als Auflagefläche für das Schweissgut dienenden Auflageplatte (14) angeordnet ist und durch eine Öffnung dieser Platte mit dem Schweissgut in Eingriff treten kann, dass ein der Schweiss-Sonotrode (2) gegenüberliegender, über dem Schweissgut angeordneter Stössel (1) mittels einer Kurvenscheibe oder Kurbel in oszillierende Bewegung versetzbar ist, welche synchron zur Bewegung eines die Auflageplatte (14) von unten durchgreifenden, zum intermittierenden Vorwärtsschieben des Schweissgutes geeigneten Transportorgans (13) verläuft, dass der Stössel (1) mit einem gegen die Sonotrode (2) gerichteten austauschbaren Stempel (3) versehen ist, welcher das Schweissmuster und/oder die Schneidkante aufweist und dass der Stempel (3) von einem auf das Schweissgut absenkbaren Niederhalter (15) umgeben ist.1. Ultrasonic sewing machine for intermittent welding and / or cutting off of ultrasonically weldable textile material and thermoplastic film with the aid of ultrasound welding tools, characterized in that a welding sonotrode (2) that can be set in vibration with ultrasound and acts as an anvil under a support surface for the weld metal serving support plate (14) is arranged and an opening of this plate can engage the weld metal in such a way that a plunger (1) opposite the weld sonotrode (2), arranged above the weld metal, oscillates by means of a cam or crank Movement is displaceable, which runs synchronously with the movement of a transport member (13) which passes through the support plate (14) from below and is suitable for intermittently pushing the weld metal forward, that the plunger (1) has an exchangeable punch (3) directed against the sonotrode (2). is provided, which the Schwe Iss pattern and / or the cutting edge and that the punch (3) is surrounded by a hold-down (15) which can be lowered onto the weld metal. 2. Ultraschall-Nähmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Stössel (1) mit dem Nadelstangen Antriebsmechanismus einer Faden-Nähmaschine verbunden ist, welcher die oszillierende Bewegung des Stössels (1) bewirken kann, wobei der Hub der Kurvenscheibe oder Kurbel dieses Antriebsmechanismus so bemessen ist, dass der mit dem Stössel (1) verbundene Stempel (3), welcher das Schweissmuster und/oder die Schneidkante aufweist, intermittierend mit dem Schweissgut in Eingriff bringbar ist.2. Ultrasonic sewing machine according to claim 1, characterized in that the plunger (1) is connected to the needle bar drive mechanism of a thread sewing machine, which can cause the oscillating movement of the plunger (1), the stroke of the cam or crank this drive mechanism It is dimensioned such that the punch (3) connected to the ram (1), which has the welding pattern and / or the cutting edge, can be intermittently brought into engagement with the weld metal. 3. Ultraschall-Nähmaschine nach Anspruch 1 und 2, dadurch gekennzeichnet, dass der Stössel (1) an Stelle der Nadelstange einer Faden-Nähmaschine angeordnet ist und dass die Transportvorrichtung in der für Faden-Nähmaschinen üblichen Form aufgebaut und angeordnet ist, um das Schweissgut während den Schweisspausen zu verschieben.3. Ultrasonic sewing machine according to claim 1 and 2, characterized in that the plunger (1) is arranged in place of the needle bar of a thread sewing machine and that the transport device is constructed and arranged in the form customary for thread sewing machines to the weld metal postpone during sweat breaks. 4. Ultraschall-Nähmaschine nach Anspruch 1 und 2, dadurch gekennzeichnet, dass die Ultraschall-Schweisswerkzeuge derart in einer Faden-Nähmaschine eingebaut sind, dass der Stössel (1) in unmittelbarer Nähe der Nadelstange und die vibrierende Spitze der Schweiss-Sonotrode (2) in unmittelbarer Nähe des Stichloches angeordnet sind, wobei für den Antrieb des Stössels (1) eine separate Kurvenscheibe im Nadelstangen-Antriebsmechanismus vorgesehen ist, so dass gleichzeitig eine Fadennaht und/oder eine Schweiss- und/oder Trennaht hergestellt werden kann.4. Ultrasonic sewing machine according to claim 1 and 2, characterized in that the ultrasonic welding tools are installed in a thread sewing machine such that the plunger (1) in the immediate vicinity of the needle bar and the vibrating tip of the welding sonotrode (2) are arranged in the immediate vicinity of the tap hole, a separate cam disk being provided in the needle bar drive mechanism for driving the plunger (1), so that a thread seam and / or a welding and / or separating seam can be produced at the same time. 5. Ultraschall-Nähmaschine nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass der austauschbare Stempel (3) zwecks Einstellung des Stempel abstandes zur Schweiss-Sonotrode (2) axial verstellbar am Stössel (1) befestigt ist und dass die Schneidkante am Stempel (3) nachstellbar angeordnet und so bemessen ist, dass sowohl bei der Herstellung einer ununterbrochenen Schweissnaht, als auch einer Reihe von im Abstand zueinander liegenden Schweisstellen auf unterschiedlich dikkem Schweissgut eine ununterbrochene Trennaht herstellbar ist.5. Ultrasonic sewing machine according to claim 1 to 4, characterized in that the exchangeable punch (3) for the adjustment of the punch distance to the welding sonotrode (2) is axially adjustable attached to the plunger (1) and that the cutting edge on the punch (3rd ) is arranged in an adjustable manner and is dimensioned such that an uninterrupted separating seam can be produced both when producing an uninterrupted weld seam and also a series of welded points spaced apart from one another on weld metal of different thickness. 6. Ultraschall-Nähmaschine nach Anspruch 1 bis 5, dadurch gekennzeichnet, dass zwischen dem Stössel (1) und dem-Stempel (3) federnde Mittel (11) angeordnet sind, deren auf den Stempel (3) wirkende Druck einstellbar ist und welche bewirken, dass der auf das Schweissgut wirkende Stempeldruck, unabhängig von der Stösselbewegung, lediglich durch die federnden Mittel (11) aufgebracht wird.6. Ultrasonic sewing machine according to claim 1 to 5, characterized in that between the plunger (1) and the stamp (3) resilient means (11) are arranged, the pressure acting on the stamp (3) is adjustable and which effect that the stamp pressure acting on the weld metal, regardless of the ram movement, is only applied by the resilient means (11). Die Erfindung betrifft eine Ultraschall-Nähmaschine zum intermittierend stellenweise Verschweissen und/oder Abtrennen von ultraschallschweissbarem Textilmaterial und thermoplastischer Folie.The invention relates to an ultrasound sewing machine for intermittently welding and / or separating textile material and thermoplastic film that can be ultrasonically welded. Eine bekannte Ultraschall-Nähmaschine (DE/ OS 2 148 861) arbeitet mit einer unter dem Schweissgut angeordneten, kontinuierlich angetriebenen und als Amboss wirkenden Transportrolle und einer mechanisch von oben gegen das Schweissgut gedrückten, mit Ultraschallfrequenz vibrierenden Schweiss-Sonotrode. Die Form der erzeugten Schweissnaht wird durch die Formgebung der auf das Schweissgut einwirkenden abrollenden Mantelfläche der Transportrolle bestimmt. Das Schweissgut wird in Abhängigkeit von der Umlaufgeschwindigkeit der Transportrolle kontinuierlich unter der Schweiss-Sonotrode hindurchbewegt und ist daher ständig in Bewegung.A known ultrasound sewing machine (DE / OS 2 148 861) works with a transport roller arranged under the weld metal, which is continuously driven and acts as an anvil, and a welding sonotrode which is mechanically pressed against the weld metal from above and vibrates at an ultrasonic frequency. The shape of the weld seam produced is determined by the shape of the rolling surface of the transport roller acting on the weld metal. The weld metal is continuously moved under the welding sonotrode depending on the speed of the transport roller and is therefore constantly in motion. Diese Ultraschall-Nähmaschine eignet sich schlecht zum Verbinden einiger an sich ultraschallschweissbarer Textilien und Folien, ausserdem lässt die Genauigkeit des Vorschubes beim Herstellen kurzer Schweissnähte zu wünschen übrig.This ultrasound sewing machine is poorly suited for connecting some textiles and foils that can be welded per se, and the accuracy of the feed leaves little to be desired when producing short weld seams. Besondere Schwierigkeiten entstehen jedoch beim Verarbeiten von ultraschallschweissbarem Material mit kompliziertem Schweissnahtverlauf oder stark unregelmässiger Form. Beispielsweise ist es mit dieser Ultraschall-Nähmaschine nicht möglich, einen eckigen Nahtverlauf sauber zu schweissen.However, particular difficulties arise when processing ultrasonic weldable material with a complicated weld seam course or a very irregular shape. For example, with this ultrasonic sewing machine it is not possible to cleanly weld an angular seam. Die Erfindung bezweckt, die Nachteile der bekannten Ultraschall-Nähmaschine zu beseitigen und die Voraussetzungen für eine einwandfreie Verarbeitung aller ultraschallschweissbaren Textilien und thermoplastischen Folien zu schaffen. Der Zweck der Erfindung wird dadurch erreicht, dass eine mit Ultraschall in Vibration versetzbare. als Amboss wirkende Schweiss-Sonotrode unter einer als Auflagefläche für das Schweissgut dienenden Auflageplatte angeordnet ist und durch eine Öffnung dieser Platte mit dem Schweissgut in Eingriff treten kann, dass ein der Schweiss-Sonotrode gegenüberliegender, über dem Schweissgut angeordneter Stössel mittels einer Kurvenscheibe oder Kurbel in oszillierende Bewegung versetzbar ist, welche synchron zur Bewegung eines die Auflageplatte von unten durchgreifenden, zum intermittierenden Vorwärtsschieben des Schweissgutes geeigneten Transportorgans verläuft, dass der Stössel mit einem gegen die Sonotrode gerichteten austauschbaren Stempel versehen ist, welcher das Schweissmuster und/oder die Schneidkante aufweist und dass der Stempel von einem auf das Schweissgut absenkbaren Niederhalter umgeben ist.The invention aims to eliminate the disadvantages of the known ultrasonic sewing machine and to create the conditions for a perfect processing of all ultrasonically weldable textiles and thermoplastic films. The purpose of the invention is achieved in that an ultrasonically vibratable. Welding sonotrode acting as an anvil is arranged under a support plate serving as a support surface for the weld metal and an opening of this plate can engage the weld metal in such a way that a plunger located opposite the weld sonotrode and arranged above the weld metal by means of a cam or crank in Oscillating movement is displaceable, which runs synchronously with the movement of a transport member that passes through the support plate from below and is suitable for intermittently pushing the weld metal forward, that the plunger is provided with an exchangeable stamp directed against the sonotrode, which has the welding pattern and / or the cutting edge and that the stamp is surrounded by a hold-down device that can be lowered onto the weld metal. Als besonders vorteilhaft erweist sich die Verwendung des bekannten Aufbaues einer Fadennähmaschine, wobei der Antrieb des den Schweisstempel tragenden Stössels mit Hilfe des bekannten Nadelstangenantriebsmechanismus erfolgt.The use of the known structure of a thread sewing machine has proven to be particularly advantageous, the drive of the plunger carrying the welding stamp being carried out with the aid of the known needle bar drive mechanism. Dadurch wird es möglich, die Schweisswerkzeuge anstelle der Nähwerkzeuge oder diesen direkt benachbart in der Maschine anzuordnen und das Schweissgut mit der bekannten, intermittierend arbeitenden Transportvorrichtung der Nähmaschine entlang einer gewünschten Linie zu bewegen. Erfolgt die Anordnung der Schweisswerkzeuge neben den Nähwerkzeugen, kann gleichzeitig eine Fadennaht und eine parallel zu dieser verlaufende Schweiss- oder Trennaht erzeugt werden. This makes it possible to arrange the welding tools instead of or directly adjacent to the sewing tools in the machine and to move the weld metal along a desired line with the known, intermittently operating transport device of the sewing machine. If the welding tools are arranged next to the sewing tools, a thread seam and a welding or separating seam running parallel to it can be produced at the same time.
CH864777A 1977-07-07 1977-07-07 Ultrasonic sewing machine CH615965A5 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112949A1 (en) * 1982-12-30 1984-07-11 Inoue-Japax Research Incorporated Sewing method and machine
US4541349A (en) * 1981-12-24 1985-09-17 Inoue-Japax Research Incorporated Sewing method and machine
DE10123309A1 (en) * 2001-05-14 2002-12-05 Imtex S L Process for joining pieces of textile fabric
CN107756821A (en) * 2017-12-06 2018-03-06 广州市博途机械设备有限公司 A kind of spring bag non-woven fabrics welder welding assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541349A (en) * 1981-12-24 1985-09-17 Inoue-Japax Research Incorporated Sewing method and machine
EP0112949A1 (en) * 1982-12-30 1984-07-11 Inoue-Japax Research Incorporated Sewing method and machine
DE10123309A1 (en) * 2001-05-14 2002-12-05 Imtex S L Process for joining pieces of textile fabric
US6797088B2 (en) 2001-05-14 2004-09-28 Imtex S.L. Method for the connection of pieces of textile fabric
CN107756821A (en) * 2017-12-06 2018-03-06 广州市博途机械设备有限公司 A kind of spring bag non-woven fabrics welder welding assembly

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