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CH323684A - Welding device for thermoplastics - Google Patents

Welding device for thermoplastics

Info

Publication number
CH323684A
CH323684A CH323684DA CH323684A CH 323684 A CH323684 A CH 323684A CH 323684D A CH323684D A CH 323684DA CH 323684 A CH323684 A CH 323684A
Authority
CH
Switzerland
Prior art keywords
welding device
handle
tube
heating
welding
Prior art date
Application number
Other languages
German (de)
Inventor
Studer Fritz
Original Assignee
Studer Fritz
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 Studer Fritz filed Critical Studer Fritz
Publication of CH323684A publication Critical patent/CH323684A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/84Specific machine types or machines suitable for specific applications
    • B29C66/861Hand-held tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/73General 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
    • B29C66/739General 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
    • B29C66/7392General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

       

  



  Schweissvorrichtung für thermoplastische Kunststoffe
Die vorliegende Erfindung bezieht sich auf eine mit heisser Luft betriebene Schweissvor  riehtung fiir thermoplastische Kunststoffe    mit   Ilandgriff und    einem damit zu einer Einheit verbundenen Schwei¯gerÏt mit einem Rohrkiirper zur Aufnahme der   Heizwicklungen.   



     Diese Heizwicklungen    werden von Druckluft zweeks Erhitzung auf Schweisstemperatur umspült.



   Die bekannten ähnlichen Sehweisseinrich  tungen    weisen den Nachteil auf, dass das die   Ileizvorriehtungen    umgebende Metallrohr stark erhitzt wird und deshalb durch eine Isolation vor   Berühl1lmg    geschützt werden muss.



     % week    der vorliegenden Erfindung ist die Be  seitigung    dieses   Naehteils.   



   Die mit erhitzter Luft betriebene Schweiss   vorriehtung für thermoplastisehe Kunststoffe    mit Handgriff und einem damit zu einer Einheit verbundenen   Sehweissgerät    zur Aufnahme der Heizwicklungen, die von Druckluft zweeks Erhitzung derselben auf Schweisstemperatur umspült werden, ist gemäss der Erfindung da  dureh gekennzeichnet, dass    der Handgriff zwei und das Schweissgerät drei konzentrische Rohre aufweist, wobei das äussere Rohr des   ITandgriffes    mit dem äussern Rohr des   Seilweissgerätes    in Verbindung steht, welches   Rohr andernends    an das entsprechende Ende des mittleren Rohres angeschlossen ist, das an seinem dem Griff zugekehrten zugekehrten Ende   clm innern Rohr    in Verbindung steht,

   das die Heizwieklungen aufnimmt. Zweckmässigerweise kann das innere Rohr des Handgriffes gegen das   Schweissgerät    abgeschlossen sein und zur Aufnahme der Heizenergiezuführung dienen.



   Auf beiliegender Zeichnung ist ein Ausiiihrungsbeispiel des Erfindungsgegenstandes im Axialschnitt dargestellt.



   Die Schweissvorrichtung für thermoplastische Kunststoffe weist ein Halterohr   1    auf, welches von einem Holzgriff 2 umgeben ist.



  Das Halterohr   1    steht mit einem Rohrkörper 3 in Verbindung, in welchem   Heizwicklungen    4 untergebracht sind. Diese sind in einem Rohr 5 angeordnet, welches sich koaxial zum Rohrkörper 3 erstreckt und mit einer Sehweissdüse 6 in Verbindung steht. Die Stromzuführung zu den Heizvorrichtungen erfolgt über eine Leitung 11.



   Zwischen dem Rohrkörper 3 und Rohr 5 ist eine Hülse 7 eingesetzt. Diese Hülse 7   sehliesst    sich einerends an einen   Gummizapfen    8 an, welcher den direkten Luftzutritt zu den   Heizwicklungen    4 sperrt. Die Hülse 7 ist etwas kürzer als der   Rohrkorper,    so dass am der Schwei¯d se zugekehrten Ende der Hülse 7 zwischen dieser und der Stirnwand 9 des Rohrkörpers 3 ein Durchgang 10 verbleibt. Anderseits   erstreekt    sich das Rohr 5 nicht bis zur Gummidichtung 8, so dass der Zutritt zu den   Heizvorriehtungen    von dieser Seite aus offen bleibt.



   Im Betrieb strömt die kalte Luft, z. B. von einem Kompressor geliefert, durch das   Halterohr      1    dem ringförmigen Zwischenraum zwischen dem Rohrkörper 3 und H lse 7 zu   und    sorgt dadurch für eine fortwährende K hlung des Rohrkörpers 3. Anschliessend str¯mt, die kalte Luft durch den Durchgang 10 und weiter zwischen der Hülse 7 und Rohr 5 diesem entlang. Der Eintritt der Luft in das Rohr 5 erfolgt an dem der   Schweissdüse    6 abgekehrten Ende derselben, worauf die Luft im Rohr 5 erhitzt und durch die Düse 6 der Sehweissstelle zugeführt wird.



   Durch die beschriebene Ausbildung der Schwei¯vorrichtung er brigt sich das Anbringen einer Isolation am Rohr 3,   wodureh    die Herstellung der Schweissvorrichtung vereinfacht und verbilligt wird.



  



  Welding device for thermoplastics
The present invention relates to a welding device operated with hot air for thermoplastics with an island handle and a welding device connected to it to form a unit with a tubular body for receiving the heating windings.



     These heating coils are surrounded by compressed air for heating to the welding temperature.



   The known similar Sehweisseinrich lines have the disadvantage that the metal tube surrounding the Ileizvorriehtungen is strongly heated and must therefore be protected against contact by insulation.



     % week of the present invention is the elimination of this sewing part.



   The heated air-operated welding device for thermoplastic plastics with a handle and a welding device connected to it to form a unit for receiving the heating windings, which are surrounded by compressed air for heating them to welding temperature, is characterized according to the invention as dureh that the handle two and the Welding device has three concentric tubes, the outer tube of the IT handle being connected to the outer tube of the cable welding device, which tube is connected at the other end to the corresponding end of the middle tube, which is connected to the end facing the handle and is connected to the inner tube,

   that absorbs the heating waves. The inner tube of the handle can expediently be closed off from the welding device and serve to receive the heating energy supply.



   The accompanying drawing shows an exemplary embodiment of the subject matter of the invention in axial section.



   The welding device for thermoplastics has a holding tube 1 which is surrounded by a wooden handle 2.



  The holding tube 1 is connected to a tubular body 3 in which heating coils 4 are housed. These are arranged in a pipe 5 which extends coaxially to the pipe body 3 and is connected to a welding nozzle 6. Power is supplied to the heating devices via a line 11.



   A sleeve 7 is inserted between the pipe body 3 and pipe 5. This sleeve 7 adjoins a rubber pin 8 at one end, which blocks the direct access of air to the heating coils 4. The sleeve 7 is somewhat shorter than the tubular body, so that a passage 10 remains between the sleeve 7 and the end wall 9 of the tubular body 3 at the end of the sleeve 7 facing the weld. On the other hand, the pipe 5 does not extend as far as the rubber seal 8, so that access to the heating devices remains open from this side.



   During operation, the cold air flows, e.g. B. supplied by a compressor, through the holding tube 1 to the annular space between the tubular body 3 and sleeve 7 and thereby ensures continuous cooling of the tubular body 3. Then the cold air flows through the passage 10 and further between the sleeve 7 and tube 5 along this. The air enters the tube 5 at the end of the tube facing away from the welding nozzle 6, whereupon the air in the tube 5 is heated and fed through the nozzle 6 to the welding point.



   The described design of the welding device eliminates the need to attach insulation to the pipe 3, which simplifies the manufacture of the welding device and makes it cheaper.


    

Claims (1)

PATENTANSPRUCH Mit erhitzter Luft betriebene Schweissvorrichtung f r thermoplastische Kunststoffe mit Handgriff und einem damit zu einer Einheit verbundenen Sehweissgerät mit Rohrkorper zur Aufnahme der Heizwicklungen, die von Druekluft zwecks Erhitzung derselben auf Schweisstemperatur umspült werden, dadurch gekennzeichnet, dass der Handgriff zwei und das Schweissgerät drei konzentrische Rohre aufweist, wobei das äussere Rohr des Handgriffes mit dem äussern Rohr des Sehweiss- gerätes in Verbindung steht, welches Rohr andernends an das entsprechende Ende des mittleren Rohres angesehlossen ist, das an seinem dem Griff zugekehrten Ende mit dem innern Rohr in Verbindung steht, das die Heizwicklungen aufnimmt. PATENT CLAIM Heated air-operated welding device for thermoplastics with a handle and a welding device with a tubular body connected to it to form a unit for receiving the heating windings, which are surrounded by compressed air for the purpose of heating them to the welding temperature, characterized in that the handle has two and the welding device has three concentric tubes , whereby the outer tube of the handle is connected to the outer tube of the welding device, which tube is connected at the other end to the corresponding end of the middle tube which, at its end facing the handle, is connected to the inner tube that contains the heating coils records. UNTERANSPRÜCHE 1. Sehweissvorrichtung nach Patentan spruch, dadurch gekennzeichnet, dass das innere Rohr des Handgriffes gegen das Sehweissgerät abgeschlossen ist und zur Aufnahme der Heizenergiezuführung dient. SUBCLAIMS 1. Sehweissvorrichtung according to patent claim, characterized in that the inner tube of the handle is closed against the Sehweissgerät and serves to receive the heating energy supply. 2. Schweissvorrichtung nach Patentan Spruch und Unteranspruch 1, dadurch gekennzeichnet, dass das mittlere Rohr des Schweissgerätes an seinem dem Griff zuge kehrten Ende durch einen Zapfen verschlossen ist, welcher den direkten Luftzutritt zu den Heizwicklungen sperrt. 2. Welding device according to patent claim and dependent claim 1, characterized in that the middle tube of the welding device is closed at its end facing the handle by a pin which blocks direct air access to the heating windings.
CH323684D 1956-04-13 1956-04-13 Welding device for thermoplastics CH323684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH323684T 1956-04-13

Publications (1)

Publication Number Publication Date
CH323684A true CH323684A (en) 1957-08-15

Family

ID=4499263

Family Applications (1)

Application Number Title Priority Date Filing Date
CH323684D CH323684A (en) 1956-04-13 1956-04-13 Welding device for thermoplastics

Country Status (1)

Country Link
CH (1) CH323684A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1125143B (en) * 1958-07-04 1962-03-08 Draegerwerk Ag Device for welding thermoplastics
DE2551503A1 (en) * 1975-11-17 1977-10-06 Combinatul Chimic Craiova Continuously operating welding machine for film webs and bags - has jaws inside which gas is heated and then discharged at plasticising temp.
US4926028A (en) * 1983-03-01 1990-05-15 Fortune William S Hot air heated soldering instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1125143B (en) * 1958-07-04 1962-03-08 Draegerwerk Ag Device for welding thermoplastics
DE2551503A1 (en) * 1975-11-17 1977-10-06 Combinatul Chimic Craiova Continuously operating welding machine for film webs and bags - has jaws inside which gas is heated and then discharged at plasticising temp.
US4926028A (en) * 1983-03-01 1990-05-15 Fortune William S Hot air heated soldering instrument

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