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DE886646C - Electrode for welding plastic films - Google Patents

Electrode for welding plastic films

Info

Publication number
DE886646C
DE886646C DEE4464A DEE0004464A DE886646C DE 886646 C DE886646 C DE 886646C DE E4464 A DEE4464 A DE E4464A DE E0004464 A DEE0004464 A DE E0004464A DE 886646 C DE886646 C DE 886646C
Authority
DE
Germany
Prior art keywords
electrode
plastic films
welding plastic
electrodes
welding
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
DEE4464A
Other languages
German (de)
Inventor
Hermann Ellinghausen
Gerhard Schmidt
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.)
ELASTONWERK BAYERN GmbH
Original Assignee
ELASTONWERK BAYERN GmbH
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 ELASTONWERK BAYERN GmbH filed Critical ELASTONWERK BAYERN GmbH
Priority to DEE4464A priority Critical patent/DE886646C/en
Application granted granted Critical
Publication of DE886646C publication Critical patent/DE886646C/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
    • 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
    • B29C66/40—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
    • B29C66/818—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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81261—Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Description

Beim Verschweißen von Kunststoffolien, speziell solchen aus Polyvinylchlorid, pressen herkömmlich die Schweißelektroden beiderseits nur in Ausdehnung der herzustellenden Schweißstelle die Folien stark zusammen. Dieses Verfahren hat'den Nachteil, daß dabei die Deformation, die infolge des Aufsetzens der Elektroden durch das Zusammenpressen der Folien unter den Elektroden eintritt, nur zum Teil wieder rückgängig gemacht wird; es liegt dann also um die Schweißstelle eine unerwiinschte Vertiefung. Außerdem zeichnen sich die scharfkantigen Ränder der Elektroden häufig durch kantige Eindrücke auf der Folie ab. When welding plastic films, especially those made of polyvinyl chloride, conventionally press the welding electrodes on both sides only in the extension of the one to be produced Weld the foils together strongly. This method has the disadvantage that the deformation caused by the pressing together of the electrodes The film enters under the electrodes, only partially reversed will; there is then an undesirable depression around the weld. aside from that the sharp edges of the electrodes are often characterized by angular impressions on the slide.

Um das zu vermeiden, werden erfindungsgemäß Elektroden verwendet, die eingebettet sind in eine Isoliermasse, die die Elektrode rings umgibt und deren Ebene einige Zentimeter allseits fortsetzt. Die Elektrode wird also in einer entsprechend ausgebohrten Isolierplatte eingegossen oder sonstwie angebracht dergestalt, daß die die eine Kondensatorbelegung bildende Ebene dieser Elektrode mit dem-Isolierkörper eine Ebene bildet. In order to avoid this, electrodes are used according to the invention, which are embedded in an insulating compound that surrounds the electrode and its Level continues a few centimeters on all sides. The electrode is therefore in a corresponding manner drilled out insulating plate poured in or otherwise attached in such a way that the plane of this electrode with the insulating body that forms a capacitor layer forms a plane.

Es wird dadurch erreicht, daß die durch den.-Druk der Elektroden eintretende Zusammenpressung der zwischenliegenden, zu verschweißenden Folien auf eine größere Fläche verteilt wird, so daß einmal die Eindrückung allmählicher veiläuft, weiter aber auch, daß diese Deformation deshalb weitgehend nach Durchführung der Verschweißung und Wegnahme der Elektroden wieder rückgängig wird, weil die' elastischen Kräfte im Bereiche des - die Elektroden umgebenden Isolierfutters wirksam bleiben. Es wird so eine Verschweißung erzielt, die die Planheit der Folien nur gering beeinträchtigt. Außerdem wird das Auftreten der durch die scharfen Elektrodenkanten hervorgerufenen Kanteneindrücke in der Folie -vermieden. It is achieved by the fact that the through-pressure of the electrodes occurring compression of the intermediate foils to be welded a larger area is distributed, so that once the impression is more gradual, but also that this deformation therefore largely after implementation of the Welding and removal of the electrodes is reversed because the 'elastic Forces in the area of - the insulating lining surrounding the electrodes remain effective. In this way, a weld is achieved which only slightly affects the flatness of the foils. In addition, the occurrence of those caused by the sharp electrode edges Edge impressions in the film -avoided.

Häufig ist, um an der Schweißstelle den erforderlichen Preßdruck zu erreichen, nur die Verwendung einer erfindungsgemäß ausgestalteten Elektrode möglich, während die Gegenelektrode in bekannter Weise ausgebildet-sein muß. Beim Aufschweißen von Formstücken auf Folien ist beispielsweise die Verwendung einer in dieser Weise ausgestalteten Elektrode als Gegenelektrode vorteilhaft. Often it is necessary to apply the required pressure at the weld point to achieve, only the use of an electrode designed according to the invention possible, while the counter electrode must be designed in a known manner. At the Welding fittings onto foils is, for example, the use of a In this way designed electrode as a counter electrode advantageous.

Als Isoliermasse, in die die Elektrode eingebettet wird, muß ein Stoff verwendet werden, dessen Wärmeausdehnungskoeffizient dem des Elektrodenmaterials gegend angeglichen ist. Es kann auch so vorgegangen werden, daß als Elektrodenmetall ein entsprechend weiches Metall verwendet wird, das sich bei der Erwärmung bei Anlegung der Hochfrequenz nach außen hin leicht vorwölbt, wodurch der für die Verschweißung nötige Preßdruck noch unterstützt wird. Vorteilhaft ist dabei beispielsweise die Verwendung von Lötzinn, das in die entsprechende Ausbohrung des Isolierkörpers eingegossen und dann mit diesem plangeschliffen wird. A must be used as the insulating compound in which the electrode is embedded Substance are used whose coefficient of thermal expansion is that of the electrode material area is aligned. It is also possible to proceed in such a way that the electrode metal a correspondingly soft metal is used, which is when heated when applied the high frequency bulges slightly outwards, whereby the for the welding necessary pressure is still supported. For example, the Use of solder that is poured into the corresponding bore in the insulating body and then it is leveled with this.

Die Abb. I und 2 zeigen ein Ausführungsbeispiel der Erfindung. I ist der hier zylinderförmig ausgebildete Isolierkörper, in dessen entsprechende Aussparung oben die aus Messing hergestellte Zuführung 3 eingesetzt ist. An diese ist angegossen die Elektrode4, die aus 5bb0igem Lötzinn besteht. Um die Verbindung zwischen 3 und 4 unbedingt zu gewährleisten, sind an dem Messingkörper 3 noch einige Kupferdrähte 2 angebracht, die vom Lötzinn umgossen sind und den elektrischen Kontakt sichern, der ohnehin durch Verlötung an der Fläche zwischen 3 und 4 hergestellt wird. Figs. I and 2 show an embodiment of the invention. I. is the here cylindrical insulating body, in its corresponding Recess above the feed 3 made of brass is inserted. To this the electrode4, which consists of 5bb0igem tin solder, is cast on. To the connection between 3 and 4, there are still a few on the brass body 3 Copper wires 2 attached, which are encased by solder and the electrical contact secure, which is already made by soldering on the surface between 3 and 4 will.

Claims (2)

PATENTANSPRÜCHE: I. Elektrode zum Verschweißen von Kunststofffolien, speziell solchen auf Polyvinylchloridbasis, dadurch gekennzeichnet, daß die Elektrode allseits umgeben ist von einem die Elektrodenebene fortsetzenden Isolierkörper. PATENT CLAIMS: I. Electrode for welding plastic films, especially those based on polyvinyl chloride, characterized in that the electrode is surrounded on all sides by an insulating body that continues the electrode plane. 2. Elektrode nach Anspruch I, dadurch gekennzeichnet, daß die Elektrode aus Lötzinn besteht. 2. Electrode according to claim I, characterized in that the electrode consists of solder.
DEE4464A 1951-10-16 1951-10-16 Electrode for welding plastic films Expired DE886646C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE4464A DE886646C (en) 1951-10-16 1951-10-16 Electrode for welding plastic films

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE4464A DE886646C (en) 1951-10-16 1951-10-16 Electrode for welding plastic films

Publications (1)

Publication Number Publication Date
DE886646C true DE886646C (en) 1953-08-17

Family

ID=7066286

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE4464A Expired DE886646C (en) 1951-10-16 1951-10-16 Electrode for welding plastic films

Country Status (1)

Country Link
DE (1) DE886646C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462256A1 (en) * 1979-07-30 1981-02-13 Pennel Et Flipo High frequency welding bars with fixed travel limit bars - for welding of thin thermoplastic sheet
DE102023103722B3 (en) 2023-02-15 2024-02-22 Alfmeier Präzision SE Welding tool for producing a bladder system and method for producing a fluid-fillable bladder system using the welding tool
DE102023103721B3 (en) 2023-02-15 2024-02-22 Alfmeier Präzision SE Welding tool for producing a bladder system and method for producing a fluid-fillable bladder system using the welding tool
WO2024170512A1 (en) 2023-02-15 2024-08-22 Gentherm Präzision SE Welding tool for producing a bladder system and method for producing a fluid-fillable bladder system by means of the welding tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462256A1 (en) * 1979-07-30 1981-02-13 Pennel Et Flipo High frequency welding bars with fixed travel limit bars - for welding of thin thermoplastic sheet
DE102023103722B3 (en) 2023-02-15 2024-02-22 Alfmeier Präzision SE Welding tool for producing a bladder system and method for producing a fluid-fillable bladder system using the welding tool
DE102023103721B3 (en) 2023-02-15 2024-02-22 Alfmeier Präzision SE Welding tool for producing a bladder system and method for producing a fluid-fillable bladder system using the welding tool
WO2024170512A1 (en) 2023-02-15 2024-08-22 Gentherm Präzision SE Welding tool for producing a bladder system and method for producing a fluid-fillable bladder system by means of the welding tool

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