AT201373B - Process for producing a connection between thermoplastic plastic pipes - Google Patents

Process for producing a connection between thermoplastic plastic pipes

Info

Publication number
AT201373B
AT201373B AT201373DA AT201373B AT 201373 B AT201373 B AT 201373B AT 201373D A AT201373D A AT 201373DA AT 201373 B AT201373 B AT 201373B
Authority
AT
Austria
Prior art keywords
sleeve
pipe ends
connection
pipe
producing
Prior art date
Application number
Other languages
German (de)
Original Assignee
Durit U Baustoff Fabrik Kern &
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 Durit U Baustoff Fabrik Kern & filed Critical Durit U Baustoff Fabrik Kern &
Application granted granted Critical
Publication of AT201373B publication Critical patent/AT201373B/en

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
    • B29C66/70—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
    • B29C66/01—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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung einer Verbindung von thermoplastischen Kunststoffrohren 
Die Erfindung betrifft ein Verfahren zur Herstellung einer Verbindung von thermoplastischen Kunststoffrohren unter Verwendung einer die Rohrenden umfassenden metallischen Hülse, die innen mit Vertiefungen versehen ist und einen ringförmigen, in ihrer Mitte liegenden, inneren Vorsprung besitzt. 



   Bei den bekannten Verbindungen von Rohrenden und Hülsen werden letztere unter Anwendung von Gewalt auf die Rohrenden aufgedreht bzw. mit einem Gewinde aufgeschraubt. Dabei kann es leicht zu Beschädigungen der zu verbindenden Teile kommen, abgesehen davon, dass keine wirklich innige Verbindung dieser Teile erzielt wird. 



   Durch das erfindungsgemässe Verfahren werden die Mängel der bekannten Rohrverbindungen dadurch vermieden, dass die Hülse auf eine   10 - 150 C   über der Schmelztemperatur des Rohrmaterials liegende Temperatur gebracht wird und hierauf die Enden der beiden zu verbindenden Rohre vorzugsweise gleichzeitig in die erhitzte Hülse bis zu dem ringförmigen Vorsprung eingeschoben werden, wodurch das an der Oberfläche der eingeschobenen Rohrenden schmelzende Kunststoffmaterial die Vertiefungen an der Hülseninnenseite ausfällt und nach einer eventuell darauffolgenden plötzlichen Abkühlung erhärtet. Durch das erfindungsgemässe Verfahren wird eine besonders innige Verbindung zwischen dem Kunststoffmaterial der Rohrenden und der metallischen Hülse erreicht. Eine Trennung dieser Teile ist nur gewaltsam möglich. 



   In weiterer Ausgestaltung der Erfindung werden die Rohrenden vor Herstellung der Verbindung innenund aussenseitig abgeschrägt. Dadurch wird einerseits eine Stauchung der Rohrenden beim Anstossen am ringförmigen Vorsprung der Hülse vermieden, anderseits das Einschieben der Rohrenden in die Hülse erleichtert. 



   Die Erfindung ist in der Zeichnung an Hand eines Ausführungsbeispieles schematisch veranschaulicht. 



  Wie daraus zu ersehen ist, besteht die erfindungsgemässe Rohrverbindung aus einer metallischen Hülse 1 und zwei mit ihren Enden in diese Hülse einschiebbaren Rohren 2 aus thermoplastischem Material. Die Hülse 1 weist einen ringförmigen Vorsprung 3 auf, der den Enden der Rohre 2 als Anschlag dient. Um das Einschieben der Rohrenden in die Hülse 1 zu erleichtern, sind die Rohrenden mit einem abgeschrägten Rand 5 versehen. Damit die Rohrenden beim Anstossen an dem Vorsprung 3 nicht gestaucht werden, ist an jedem Rohrende auch ein innerer, abgeschrägter Rand 4 vorgesehen. 



   Beim Zusammensetzen der Rohrverbindung nach dem erfindungsgemässen Verfahren wird die metallische Hülse 1 zunächst auf eine   10 - 150   C über der Schmelztemperatur des Rohrmaterials liegende Temperatur gebracht und dann die Rohrenden vorzugsweise gleichzeitig in die erhitzte Hülse eingeschoben. Die Oberfläche der eingeschobenen Rohrenden kommt mit der mit Ringrillen versehenen Innenfläche der erhitzten Hülse 1 so innig in Berührung, dass das Kunststoffmaterial der Rohrenden bis zu einer bestimmten Tiefe schmilzt und das geschmolzene Material die Hohlräume der Rillen 6 der Hülse 1 ausfüllt. Diese Rillen 6 weisen vorteilhaft sägezahnförmigen Querschnitt auf, wodurch das in ihnen sitzende und erhärtete Kunststoffmaterial der Rohrenden ein Herausziehen derselben aus der Hülse 1 verhindert. 



   Um zu erreichen, dass das Kunststoffmaterial der Rohrenden lediglich bis zu einer der Tiefe der Rille 6 entsprechenden Stärke schmilzt und nicht mehr, wird eine plötzliche Abkühlung der Hülse 1 nach dem Einschieben der Rohrenden, z. B. durch Bespritzen mit Wasser, zweckmässig sein. Durch das Abkühlen der metallischen Hülse 1 wird nicht nur eine Verformung der Rohrenden vermieden, sondern auch eine Beschleunigung des Arbeitsvorganges erreicht.



   <Desc / Clms Page number 1>
 



  Process for producing a connection between thermoplastic plastic pipes
The invention relates to a method for producing a connection between thermoplastic pipes using a metallic sleeve which surrounds the pipe ends and is provided with indentations on the inside and has an annular inner projection located in its center.



   In the known connections of pipe ends and sleeves, the latter are screwed onto the pipe ends using force or screwed on with a thread. This can easily damage the parts to be connected, apart from the fact that no really intimate connection is achieved between these parts.



   The method according to the invention avoids the shortcomings of the known pipe connections in that the sleeve is brought to a temperature 10 - 150 C above the melting temperature of the pipe material and the ends of the two pipes to be connected are then preferably simultaneously inserted into the heated sleeve up to the ring-shaped one Projection are pushed in, whereby the plastic material melting on the surface of the inserted pipe ends precipitates the depressions on the inside of the sleeve and hardens after a possible subsequent sudden cooling. The method according to the invention achieves a particularly intimate connection between the plastic material of the pipe ends and the metallic sleeve. A separation of these parts is only possible by force.



   In a further embodiment of the invention, the pipe ends are beveled on the inside and outside before the connection is made. This on the one hand avoids compression of the pipe ends when they strike the annular projection of the sleeve, and on the other hand facilitates the insertion of the pipe ends into the sleeve.



   The invention is illustrated schematically in the drawing using an exemplary embodiment.



  As can be seen therefrom, the pipe connection according to the invention consists of a metallic sleeve 1 and two pipes 2 made of thermoplastic material, the ends of which can be pushed into this sleeve. The sleeve 1 has an annular projection 3 which serves as a stop for the ends of the tubes 2. In order to facilitate the insertion of the pipe ends into the sleeve 1, the pipe ends are provided with a beveled edge 5. So that the pipe ends are not compressed when they strike the projection 3, an inner, beveled edge 4 is also provided at each pipe end.



   When assembling the pipe connection according to the inventive method, the metallic sleeve 1 is first brought to a temperature 10-150 ° C above the melting temperature of the pipe material and then the pipe ends are pushed into the heated sleeve, preferably at the same time. The surface of the inserted pipe ends comes into contact with the inner surface of the heated sleeve 1, which is provided with annular grooves, so that the plastic material of the pipe ends melts to a certain depth and the molten material fills the cavities of the grooves 6 of the sleeve 1. These grooves 6 advantageously have a sawtooth-shaped cross section, as a result of which the hardened plastic material of the pipe ends that sits in them prevents them from being pulled out of the sleeve 1.



   In order to ensure that the plastic material of the pipe ends only melts to a thickness corresponding to the depth of the groove 6 and not more, the sleeve 1 is suddenly cooled after the pipe ends have been pushed in, e.g. B. by spraying with water, be appropriate. The cooling of the metallic sleeve 1 not only prevents deformation of the pipe ends, but also accelerates the work process.

Claims (1)

PATENTANSPRÜCHE : 1. Verfahren zur Herstellung einer Verbindung von thermoplastischen Kunststoffrohren unter Verwendung einer die Rohrenden umfassenden metallischen Hülse, die innen mit Vertiefungen versehen ist und einen ringförmigen, in ihrer Mitte liegenden, inneren Vorsprung besitzt, dadurch gekennzeichnet, dass die Hülse auf eine 10 - 150 C über der Schmelztemperatur des Rohrmaterials liegende Temperatur gebracht wird und hierauf die Enden der beiden zu verbindenden Rohre vorzugsweise gleichzeitig in die erhitzte Hülse bis zu dem ringförmigen Vorsprung eingeschoben werden, wodurch das an der Oberfläche der eingeschobenen Rohrenden schmelzende Kunststoffmaterial die Vertiefungen an der Hülseninnenseite ausfüllt und nach einer eventuell darauffolgenden plötzlichen Abkühlung erhärtet. PATENT CLAIMS: 1. A method for the production of a connection of thermoplastic plastic pipes using a metal sleeve which encompasses the pipe ends and is provided with indentations on the inside and has an annular inner projection in its center, characterized in that the sleeve is set to a 10-150 ° C The temperature above the melting temperature of the pipe material is brought and then the ends of the two pipes to be connected are preferably simultaneously inserted into the heated sleeve up to the annular projection, whereby the plastic material melting on the surface of the inserted pipe ends fills the depressions on the inside of the sleeve and afterwards any subsequent sudden cooling hardens. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Rohrenden vor Herstellung der Verbindung innen-und aussenseitig abgeschrägt werden. 2. The method according to claim 1, characterized in that the pipe ends are beveled on the inside and outside before making the connection.
AT201373D 1957-09-13 1957-09-13 Process for producing a connection between thermoplastic plastic pipes AT201373B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT201373T 1957-09-13

Publications (1)

Publication Number Publication Date
AT201373B true AT201373B (en) 1958-12-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
AT201373D AT201373B (en) 1957-09-13 1957-09-13 Process for producing a connection between thermoplastic plastic pipes

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277233A (en) * 1964-01-02 1966-10-04 Kaiser Aluminium Chem Corp Conduit with partially exposed ground wire extending from end to end
DE1279315B (en) * 1962-10-25 1968-10-03 Albert Obrist Injection mold for the production of a pipe connection sleeve made of plastic with serrated, saw-tooth-shaped projections on the inner surface of the sleeve
DE1683065B1 (en) * 1966-11-28 1971-12-02 Ici Ltd HOLLOW PROFILE CONNECTIONS IN PARTICULAR FOR WINDOWS OR DOOR FRAMES
US4059294A (en) * 1976-05-10 1977-11-22 Syracuse Plastics, Inc. Annular metal fitting for rigid plastic part
US4712809A (en) * 1983-04-18 1987-12-15 Societe Anonyme Styled Legris Method and device for assembling several components, particularly connection fittings for fluid couplings
EP0701081A1 (en) * 1994-09-08 1996-03-13 Honda Giken Kogyo Kabushiki Kaisha Coupling structure for pipes of synthetic resin

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279315B (en) * 1962-10-25 1968-10-03 Albert Obrist Injection mold for the production of a pipe connection sleeve made of plastic with serrated, saw-tooth-shaped projections on the inner surface of the sleeve
US3277233A (en) * 1964-01-02 1966-10-04 Kaiser Aluminium Chem Corp Conduit with partially exposed ground wire extending from end to end
DE1683065B1 (en) * 1966-11-28 1971-12-02 Ici Ltd HOLLOW PROFILE CONNECTIONS IN PARTICULAR FOR WINDOWS OR DOOR FRAMES
US4059294A (en) * 1976-05-10 1977-11-22 Syracuse Plastics, Inc. Annular metal fitting for rigid plastic part
US4712809A (en) * 1983-04-18 1987-12-15 Societe Anonyme Styled Legris Method and device for assembling several components, particularly connection fittings for fluid couplings
EP0701081A1 (en) * 1994-09-08 1996-03-13 Honda Giken Kogyo Kabushiki Kaisha Coupling structure for pipes of synthetic resin

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