DE933239C - Device for spot-welding-like joining of plastics - Google Patents

Device for spot-welding-like joining of plastics

Info

Publication number
DE933239C
DE933239C DEP1082A DE0001082A DE933239C DE 933239 C DE933239 C DE 933239C DE P1082 A DEP1082 A DE P1082A DE 0001082 A DE0001082 A DE 0001082A DE 933239 C DE933239 C DE 933239C
Authority
DE
Germany
Prior art keywords
electrode
sewing machine
plastics
spot
insulating piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEP1082A
Other languages
German (de)
Inventor
Theo Pompejus
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.)
HANS VIETEN DIPL ING
Original Assignee
HANS VIETEN DIPL ING
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 HANS VIETEN DIPL ING filed Critical HANS VIETEN DIPL ING
Priority to DEP1082A priority Critical patent/DE933239C/en
Application granted granted Critical
Publication of DE933239C publication Critical patent/DE933239C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/71—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 composition of the plastics material of the parts to be joined
    • 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
    • B29C66/83—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
    • B29C66/80—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
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/845—C-clamp type or sewing machine type
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8187—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
    • B29C66/81871—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws

Description

Vorrichtung zum punktschweißähnlichen Zusammenheften von Kunststoffen Gegenstand der Erfindung ist eine Vorrichtung zum punktschweißähnlichen Zusammenheften von Kunststoffen, z. B. Polyvinylchlorid od. dgl., bei der die erforderliche Erhitzung des Materials durch Hochfreqwenz lerfolgt. Solche Kunststoffe kommen, wenn sie beispielsweise für Bekleidungsgenstände verwendet werden, meistens in dünnen Bahnen zur Verarbeitung. Nach dem Zuschneidren werden sie dann zusammengenäht, und zwar geschieht dies auch heute noch oft mit normalen Nähmaschinen mittels Nadel und Zwim. Hierbei stößt jedoch die Nadel bei jedem Stich ein Loch in den Kunststoff, und diese Verletzung des Kunststoffes verursacht eine Schwächung der Naht, derzufolge an dieser Stelle sehr leicht ein Reißen eintritt. Aus diesem Grunde hat man versucht, die Naht durch eine Schweißung zu ersetzen. Wenn man nämlich Kunststoff auf etwa I50° C jerhttzt, so wird er plastisch und kommt schließlich zum Schmelzen.Device for spot-welding-like joining of plastics object the invention is a device for spot-weld-like tacking together Plastics, e.g. B. polyvinyl chloride od. Like. In which the required heating of the material is carried out by high frequency. Such plastics come when they, for example used for articles of clothing, mostly in thin sheets for processing. After they have been cut to size, they are then sewn together, and this is what happens still often today with normal sewing machines using a needle and twine. Here, however, comes across the needle makes a hole in the plastic with each stitch, and this damage the plastic causes a weakening of the seam, consequently a very easy one at this point Tearing occurs. For this reason, attempts have been made to weld the seam to replace. If you heat plastic to around 150 ° C, it becomes plastic and eventually melts.

Man erhitzt daher den Kunststoff durch geeignete Methoden und setzt ihn einem gewissen Druck aus.The plastic is therefore heated by suitable methods and set put a certain amount of pressure on him.

Dann werden die zu verbindenden Teile moteinander verschweißt. Diese Erhitzung kann auf verschiedene Weise durchgeführt werden, z. B. durch elektrische Widerstands.erhitzung oder durch Zuführung von Hochfrequenz. Gerade diese letztere Art des Erhitzens hat sich als besonders günstig verwiesen.Then the parts to be connected are welded together. These Heating can be carried out in a number of ways, e.g. B. by electrical Resistance heating or by supplying high frequency. Just this latter The type of heating has proven to be particularly beneficial.

Hier erfolgt nämlich im Gegensatz zu anderen Verfahren die Wärmezufuhr im Innern des Materials selbst, so daß die Oberfläche fast unverändert bleibt und ihr ursprüngliches Aussehen blehält. Um eine derartige Schweißung durchzuführen, war man bisher jedoch gezwungen, Spezialmaschinen zu verwenden.In contrast to other processes, this is where the heat is supplied inside the material itself, so that the surface remains almost unchanged and retains its original appearance. To carry out such a weld, However, up to now one was forced to use special machines.

Demgegenüber bezweckt die Erfindung, diese Art der Schweißung mit bereits vorhandenen Nähmaschinen zu bewerkstelligen, ohne daß hierzu an diesen größere oder gar bleibende Änderungen vorgenommen werden müssen. In contrast, the invention aims to use this type of weld to accomplish already existing sewing machines without having to use these larger ones or even permanent changes have to be made.

Gemäß der Erfindung wird dies dadurch erreicht, daß unter Verwendung einer normalen Nähmaschine an Stelle der dort vorgesehenen Nadel eine Elektrode verwendet ist, die mit dem einen Pol leiner Hochfrequenzquelle verbunden ist, während der andere Pol an leine beliebige Stelle des metallischen Glehäwses der Nährnaschine, vorzugsweise an die Nähmaschinenplatte gelegt ist. According to the invention this is achieved by using a normal sewing machine an electrode instead of the needle provided there is used, which is connected to one pole of a high frequency source while the other pole on a leash any point of the metallic Glehäwses of the sewing machine, is preferably placed on the sewing machine plate.

Es sind Hochfrequenz-Nahtschweißmaschinen bekannt, die auf den ersten Blick Ähnlichkeit mit einer normalen, fadenverarbeitenden Nähmaschine besitzen, Aber auch diese Hochfrequenz-Naht--schweißmaschinen sind Spezialmaschinen, die keineswegs die Umwandlung in eine normale fadenverarbeitende Nähmaschine gestatten und umgekehrt. Allerdings ist bei einer bekannten Hochfrequenz-Nahtschweißmaschine ebenfalls die obere Elektrode isoliert, während die untere gleiches Potential mit dem Maschinengehäuse besitzt. Auch ist der Träger der oberen Elektrode samt Isolierstück und Führungsstange gegenüber der Antriebskurbel abgefedert, was allerdings bedingt, daß wesentlich größere Massen abgefedert sind als beim Erfindungsgegenstand, bei dem nur die verhältnismäßig leichte obere Elektrode gegenüber dem Isolierstück und der Führungsstange abgefedert ist. There are high-frequency seam welding machines known at first Look similar to a normal, thread-processing sewing machine, But even these high-frequency seam welding machines are special machines that by no means allow conversion into a normal thread processing sewing machine and vice versa. However, in a known high-frequency seam welding machine, the upper electrode isolated, while the lower one has the same potential with the machine housing owns. There is also the carrier of the upper electrode, including the insulating piece and guide rod cushioned against the drive crank, which, however, requires that essential larger masses are cushioned than with the subject of the invention, in which only the relatively light upper electrode cushioned against the insulating piece and the guide rod is.

Es ist daher in letzterem Falle möglich, mit einem geringeren Schweißdruck zu arbeiten.It is therefore possible in the latter case with a lower welding pressure to work.

Es ist ferner eine Nahtschweißmaschine bekannt, die nicht mit Hochfrequenzerwärmung sondern mit Widerstandsheizung arbeitet. Aber auch bei dieser Maschine handelt es sich um eine ausgesprochene Spezialmaschine, die nicht in eine Fadennähmaschine verwandelt werden kann. A seam welding machine is also known which does not use high-frequency heating but works with resistance heating. But this is also the case with this machine is a downright special machine that is not a thread sewing machine can be transformed.

Die Erfindung sowie weitere Einzelheiten derselben werden nachstehend an Hand der in der Zeichnung dargestellten Prinzip bilder beschrieben. The invention and further details thereof are set forth below on the basis of the principle pictures shown in the drawing.

Es zeigt Fig. 1 einen Nähmaschinenarm, Fig. 2 eine gegen Fig. 1 um 90° verdrehte Ansicht auf den gleichen Arm.1 shows a sewing machine arm, and FIG. 2 shows a sewing machine arm compared to FIG. 1 90 ° rotated view of the same arm.

Darin bedeutet I den Nähmaschinenarm, in dessen Kopf in bekannter Weise eine Nadelstange 2 gleitet. An dieser Nadelstange ist mit Hilfe einer Stellschraube 3 ein Isolierstück 4 befestigt, dessen freies Ende eine Elektrode 5 trägt. Here I means the sewing machine arm, in the head of which is known Way a needle bar 2 slides. A set screw is attached to this needle bar 3 an insulating piece 4 is attached, the free end of which carries an electrode 5.

Die Befestigung der Elektrode 5 an dem Isolierstück 4 erfolgt unter Zwischenschaltung eines federnden Gliedes, z. B. einer Feder 6. Über einen Kontakt 7 ist der eine Pol einer Hochfrequenzquelle mit der Elektrode 5 verbunden, während der andere Pol am Gehäuse der Maschine, vorzugsweise über einen Kontakt 8 - an der Nähmaschinenplatte 9 liegt. Mit 10 ist der Drückerfuß bezeichnet.The fastening of the electrode 5 to the insulating piece 4 takes place below Interposition of a resilient member, e.g. B. a spring 6. Via a contact 7, one pole of a high frequency source is connected to the electrode 5, while the other pole on the housing of the machine, preferably via a contact 8 - on the Sewing machine plate 9 lies. With 10 the presser foot is referred to.

Die Wirkungsweise der Erfindung geht aus der Zeichnung klar hervor. Von einer normalen handelsüblichen Nähmaschine werden Nadelkloben mit Nadel entfernt und an dessen Stelle das Isolierstück 4 angebracht, welches die Elektrode 5 trägt. The mode of operation of the invention is clear from the drawing. Needle blocks with needles are removed from a normal, commercially available sewing machine and in its place the insulating piece 4 is attached, which carries the electrode 5.

Hierbei ist zu beachten, daß die Elektrode 5 einen genügenden Abstand von der Nadelstange 2 besitzt, damit der Hochfrequenzstromkreis nicht kurzgeschlossen wird. Hiermit ist die Nähmaschine zur Hochfrequenzschweißung fertig. Es kann jetzt wie üblich damit gearbeitet werden, nur daß an Stelle des Fadenloches eine Schweißung tritt, wenn während des Betriebes ein Hochfrequenzgenerator zugeschaltet wird. Dieser Generator kann ein Röhrengenerator kleiner Leistung von etwa 50 bis 200 Watt Hochfnequenz sein. Auch größere Generatoren können verwendet werden. Sie werden dann vorteilhafterweise mit einer Energieregelung versehen.Care should be taken that the electrode 5 has a sufficient distance from the needle bar 2, so that the high frequency circuit is not short-circuited will. The sewing machine for high-frequency welding is now ready. It can now can be worked with as usual, only that a weld instead of the thread hole occurs when a high-frequency generator is switched on during operation. This The generator can be a tube generator with a low output of around 50 to 200 watts of high frequency be. Larger generators can also be used. You will then be beneficial provided with an energy control.

Die Festigkeit der auf dise Weise entstehenden Naht ist größer als die des einfachen Materials selbst. Da sich in die Oberfläche des Kunststoffes die Form der Elektrode eindrückt, kann man durch entsprechende Formgebung der Elektrode erreichen, daß gleichzeitig Verzierungen auf dem Kunststoff erzielt werden. Selbstverständlich konnen mit der erfindungsgemäßen Vorrichtung auch solche Verzierungen allein hergestellt werden, ohne daß damit eine Schweißung verbunden sein muß. Der für den Umbau leiner normalen Nähmaschine erforderliche Aufwand ist sehr gering. Der Umbau kann außerdem jederzeit in einigen Minuten rückgängig ge macht werden, da keine bleibenden Änderungen für ihn erforderlich sind. Die Maschine bleibt daher jederzeit sowohl für ihren ursprünglichen Zweck als auch für die erfindungsgemäße Vorrichtung einsatzbereit, und wenn sie zur Fadenverarbeitung verwendet wird, steht der in einem blesondlenen Gehäuse untergebrachte Generator zu anderen Arbeiten, wie Versorgung von Schweißpressen oder Hochfrequenzöfen, zur Verfügung. The strength of the resulting seam is greater than that of the simple material itself. Since the The shape of the electrode can be pressed in by shaping the electrode accordingly achieve that at the same time decorations are achieved on the plastic. Of course such decorations can also be produced on their own with the device according to the invention without a weld having to be connected to it. The one for the conversion The effort required for a normal sewing machine is very low. The modification can also can be undone at any time in a few minutes, as there are no permanent changes are required for him. The machine therefore remains at all times for both theirs original purpose as well as ready for use for the device according to the invention, and when it is used for thread processing, it is in a blesondlenen Housing housed generator for other work, such as supplying welding presses or high frequency ovens.

Claims (1)

PATENTANSPROCHE: I. Zusatzgerät zur Umwandlung einer normalen fadenverarbeitenden Nähmaschine in eine Nahtschweißmaschine zum punktsweißähnlichen Verbinden von Kunststoffen, z. B. Polyvinylchlorid od. dgl., woblei die Erhitzung des Materials durch Hochfrequenz verfolgt, bestehend aus einer an Stelle der Nadel einschließlich Nadelkloben - gegebenenfalls unter Anordnung eines mit größerer Bohrung verrsehenen Drückerfußes (10) - unter Zwischenschaltung eines Isolierstückes (4) an der Nadelstange (2) auswechselbar angebrachten Elektrode (5), die ihrerseits in leitender Verbindung mit leinem Hochfrequenzgenerator steht, dessen anderer Pol an teine beliebigen Stelle des metallenen Gehäuses der Nälrinschine angebracht ist. -2. Zusatzgerät nach Anspruch I, dadurch gekennzeichnet, daß die Elektrode (5) federnd an dem Isolierstück (4) angeordnet ist. PATENT APPEAL: I. Additional device for converting a normal thread processing Sewing machine in a seam welding machine for spot-white-like joining of plastics, z. B. polyvinyl chloride od. Like., Woblei the heating of the material by high frequency tracked, consisting of one in place of the needle including a pin block - if necessary under the arrangement of a presser foot (10) provided with a larger bore - under Interposition of an insulating piece (4) on the needle bar (2) can be exchanged attached electrode (5), which in turn is in conductive connection with leinem high-frequency generator whose other pole is at any point on the metal housing of the Nälrinschine is attached. -2. Additional device according to claim I, characterized in that that the electrode (5) is resiliently arranged on the insulating piece (4). Angezogene Druckschriften: USA.-Patentschriften Nr. 2 432 4I2, 2 472 820; deutsche Patentschrift Nr. 732 156. References: U.S. Patents No. 2,432,412,22 472 820; German patent specification No. 732 156.
DEP1082A 1950-03-25 1950-03-25 Device for spot-welding-like joining of plastics Expired DE933239C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP1082A DE933239C (en) 1950-03-25 1950-03-25 Device for spot-welding-like joining of plastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP1082A DE933239C (en) 1950-03-25 1950-03-25 Device for spot-welding-like joining of plastics

Publications (1)

Publication Number Publication Date
DE933239C true DE933239C (en) 1955-09-22

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DEP1082A Expired DE933239C (en) 1950-03-25 1950-03-25 Device for spot-welding-like joining of plastics

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087891B (en) * 1956-09-10 1960-08-25 Offenburger Rosshaarspinnerei Welding machine for producing a butt seam on weldable plastic films
DE1283587B (en) * 1965-04-23 1968-11-21 Opti Werk Gmbh & Co Process for the melting of reinforcement tape with simultaneous formation of the end links in zippers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE732156C (en) * 1942-01-23 1943-02-23 Pfaff Ag G M Machine for the continuous formation of seams on fabric panels made of thermoformable plastics
US2432412A (en) * 1945-03-05 1947-12-09 Singer Mfg Co Bonding machine
US2472820A (en) * 1945-02-07 1949-06-14 Singer Mfg Co Bonding machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE732156C (en) * 1942-01-23 1943-02-23 Pfaff Ag G M Machine for the continuous formation of seams on fabric panels made of thermoformable plastics
US2472820A (en) * 1945-02-07 1949-06-14 Singer Mfg Co Bonding machine
US2432412A (en) * 1945-03-05 1947-12-09 Singer Mfg Co Bonding machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087891B (en) * 1956-09-10 1960-08-25 Offenburger Rosshaarspinnerei Welding machine for producing a butt seam on weldable plastic films
DE1283587B (en) * 1965-04-23 1968-11-21 Opti Werk Gmbh & Co Process for the melting of reinforcement tape with simultaneous formation of the end links in zippers

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