DE102008006068B3 - Multi-layered composite pipes welding system for making undetachable connection between fitting and pipes, has fitting designed such that fitting connects pipe ends from walls of fitting in form-fit manner after heating of recess and pipes - Google Patents

Multi-layered composite pipes welding system for making undetachable connection between fitting and pipes, has fitting designed such that fitting connects pipe ends from walls of fitting in form-fit manner after heating of recess and pipes Download PDF

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Publication number
DE102008006068B3
DE102008006068B3 DE102008006068A DE102008006068A DE102008006068B3 DE 102008006068 B3 DE102008006068 B3 DE 102008006068B3 DE 102008006068 A DE102008006068 A DE 102008006068A DE 102008006068 A DE102008006068 A DE 102008006068A DE 102008006068 B3 DE102008006068 B3 DE 102008006068B3
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Prior art keywords
fitting
pipes
heating
pipe
plastic
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German (de)
Inventor
Vinko Rebersek
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Ke Kelit Kunststoffwerk GmbH
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Vinko Rebersek
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Classifications

    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C66/01—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
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • 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
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • 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
    • B29C66/52295—Joining tubular articles involving the use of a socket said socket comprising reinforcements
    • 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
    • B29C66/50—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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential 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
    • B29C66/50—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
    • B29C66/63—Internally supporting the article during joining
    • B29C66/636—Internally supporting the article during joining using a support which remains in the joined object
    • 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
    • B29C66/723—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 being multi-layered
    • 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
    • B29C66/723—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 being multi-layered
    • B29C66/7232—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 being multi-layered comprising a non-plastics layer
    • B29C66/72321—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 being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/97—Checking completion of joining or correct joining by using indications on at least one of the joined parts
    • B29C66/972—Checking completion of joining or correct joining by using indications on at least one of the joined parts by extrusion of molten material
    • 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
    • B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B29L2009/003—Layered products comprising a metal layer

Abstract

The system has a heating device for heating pipe ends and a conical radial recess (1c) of a fitting (1) and provided with circular heating elements. The fitting is designed such that the fitting connects the pipe ends from inner and outer walls of the fitting in a form-fit manner after heating the radial recess and a composite pipe (2) with two plastic layers (2a, 2c) and a metal layer (2b). The fitting has an internal sheath (1b) made of heat-resistant material or metal for stabilization of the inner wall of the fitting, where the sheath is engaged into the fitting.

Description

Die Erfindung bezieht sich auf ein System zur Verbindung von Rohren aus Kunststoff, insbesondere für mehrschichtige Verbundrohre, bestehend aus mehreren verschiedenen Schichten aus Kunststoff und Metall. Die Verbindung wird durch jeweils ein Rohrteil und ein Fittingselement hergestellt, wobei die einzelnen Elemente zeitgleich an ihrer angefassten Stoßfläche durch eine Heizvorrichtung angeweicht oder angeschmolzen werden und danach längs an deren Stoßfläche zusammengefügt werden. Durch das Zusammenfließen des Kunststoffs beider Teile kommt es zu einem Verschweißen und es bildet sich eine unlösbare Verbindung zwischen Rohr und Fitting.The The invention relates to a system for connecting pipes Plastic, especially for multilayer composite pipes, consisting of several different Layers of plastic and metal. The connection is through each a pipe part and a fitting element made, wherein the individual Elements at the same time at their touched abutment surface by a heater be soaked or melted and then along the Butt jointed together. By the confluence the plastic of both parts, it comes to a welding and it forms an insoluble one Connection between pipe and fitting.

Bei den bisher gängigen Verfahren wurden unter anderem äußere Heizelemente, wie in den Dokumenten DE 1 831 453 U und DE 199 13 836 A1 beschrieben wird, so genannte Elektromuffen mit integrierten Heizelementen, wie aus den Dokumenten EP 0 711 948 B1 und DE 38 08 229 A1 zu erschließen ist, oder äußere Spann- und Vakuumvorrichtungen benutzt, wie in EP 0 263 980 A2 dargestellt. Alle bisher bekannten Schweißsysteme und Verfahren haben jedoch eines gemeinsam – sie sind für mehrschichtige Rohre aus Kunststoff und Metall nicht geeignet. Da die äußere Kunststoffschicht der üblichen Verbundrohre vergleichsweise dünn und nicht tragfähig ist, wird ein Schweißverfahren der die äußere Schichten zweier zu verbindenden Rohre verbinden würde ausgeschlossen. Auch das bei Kunststoffrohren gängige Stoßverfahren, bei dem die Stoßflächen zweier Rohre gleichen Durchmessers mittels einer Heizvorrichtung bis zu deren Schmelzpunkt erhitzt werden und danach axial zusammengefügt werden, ist offensichtlich wegen der Metallschicht bei Verbundrohren nicht anwendbar.In the hitherto common methods were among other external heating elements, as in the documents DE 1 831 453 U and DE 199 13 836 A1 described so-called electric sleeves with integrated heating elements, as from the documents EP 0 711 948 B1 and DE 38 08 229 A1 or external clamping and vacuum devices are used as in EP 0 263 980 A2 shown. However, all previously known welding systems and methods have one thing in common - they are not suitable for multilayer pipes made of plastic and metal. Since the outer plastic layer of the conventional composite pipes is comparatively thin and unsustainable, a welding process that would connect the outer layers of two pipes to be joined is excluded. Also, common in plastic pipes impact method in which the abutting surfaces of two pipes of the same diameter are heated by a heater to its melting point and then axially joined together, is obviously not applicable because of the metal layer in composite pipes.

Die Aufgabe der Erfindung ist es daher, eine Verbindung zu entwickeln, die durch einen kostengünstigen Schweißprozess alle Kunststoffschichten des Verbundrohres einbezieht, um die Stabilität der Verbindung zu gewährleisten und die Metallschicht völlig ummantelt, um eine mögliche Korrosion zu verhindern.The The object of the invention is therefore to develop a compound which by a cost-effective welding process involves all the plastic layers of the composite tube to ensure the stability of the connection to ensure and the metal layer completely sheathed to a possible Prevent corrosion.

Diese Aufgabe ist gemäß der Erfindung dadurch gelöst, dass das mehrschichtige Verbundrohr durch einen Schweißvorgang an einen Fitting gekoppelt wird, der durch seine Form an das Rohr von seiner Innenseite als auch von seiner Außenseite anliegt. Die innere Anliegefläche des Fittings, der erfindungsgemäß aus Kunststoff besteht, weist eine Hülse aus Metall oder aus einem hitzebeständigen Kunststoff auf, die zur inneren Stabilität des Fittings, insbesondere bei dem Schmelzvorgang des Verbindens des Kunststoffs beider Verbindungskörper, beiträgt. Diese Hülse wird durch einen Rand oder Zahn im Inneren des Kunststofffittings gehalten. Der Schmelzvorgang findet auf die bereits bekannte Weise statt. Die beiden Verbindungskörper werden axial auf eine übliche elektrische Heizvorrichtung, mit mindestens einem Heizring, der genau den Konturen des Rohrs und/oder des Fittings entspricht, geschoben. Diese beiden zu verbindenden Teile werden dann bis zum Erweichungs- oder Schmelzpunkt erhitzt, in axialer Richtung von der Heizvorrichtung entnommen und wieder axial ineinander gestoßen. Durch die spezielle Ausbildung des Heizrings wird das zu verbendende Rohr von der Außen- sowie von der Innenseite erhitzt. Die radiale spaltförmige Öffnung des Fittings bildet eine den Konturen des Rohrs angepasste Anliegefläche. Durch das Anschmelzen des Fittings wird das hineingepresste Rohr von allen Seiten von der flüssigen Fittingmasse umhüllt und mit dem flüssigen Kunststoff des Rohrs zusammengeschweißt.These Task is according to the invention solved by that the multilayer composite pipe by a welding process is coupled to a fitting, which by its shape to the pipe from its inside as well as from its outside. The inner one bearing surface of the fitting according to the invention made of plastic consists, has a sleeve made of metal or of a heat-resistant plastic, which for internal stability of the fitting, especially in the melting process of joining the plastic of both connecting body, contributes. This sleeve is made by a rim or Tooth held inside the plastic fitting. The melting process takes place in the already known way. The two connecting bodies are axially to a usual electric heater, with at least one heating ring, the exactly the contours of the pipe and / or fitting corresponds, pushed. These two parts to be joined are then softened or Melting point heated in the axial direction of the heater removed and again axially collided. Due to the special education the heating ring is the pipe to be connected from the outside as well heated from the inside. The radial gap-shaped opening of the fitting forms a contact surface adapted to the contours of the pipe. By the melting the fitting is pressed in from all sides by the pipe liquid Wrapped in the fitting compound and with the liquid Plastic welded together of the pipe.

Vor dem Verschweißprozess kann das zu verbindende Rohr an seinem Ende auch mittels eines herkömmlichen Rohraufweitverfahrens aufgeweitet werden, dies ermöglicht einen gleich bleibenden Innendurchmesser der Verbindung und somit gleich bleibende Durchflusscharakteristika des durchströmenden Fluids oder Gases.In front the welding process can the pipe to be joined at its end by means of a conventional Expanded pipe expansion process, this allows one constant internal diameter of the compound and thus consistent Flow characteristics of the flowing fluid or gas.

Ein weiteres Merkmal der Erfindung ist der Heizring, der mit einer hitzeresistenten und/oder kunststoffabweisenden Schicht beschichtet sein kann.One Another feature of the invention is the heating ring, which with a heat-resistant and / or plastic-repellent layer may be coated.

Dieser wird an eine übliche Heizvorrichtung angebracht und ist wie bereits beschrieben nach den Konturen des zu verbindenden Rohres ausgebildet und kann an der Seite eine oder mehrere Öffnungen aufweisen, die das Entweichen des beim Erhitzen überflüssigen Kunststoffes ermöglichen. Ferner kann die an der Außenwand des Rohres anliegende Innenwand des Heizringes ein Rillen- oder Zackenprofil aufweisen, das ebenfalls ein Austreten der flüssigen Masse ermöglicht.This becomes a common one Heater attached and is as already described after formed the contours of the pipe to be connected and can the side have one or more openings, which allow the escape of superfluous plastic when heated. Furthermore, the on the outside wall the tube fitting inner wall of the heating ring a groove or Jag profile, which also has an escape of the liquid mass allows.

Die Erfindung wird durch folgende Ausführungsbeispiele anhand schematischer Zeichnungen erläutert und beschrieben. Dabei zeigen:The Invention is illustrated by the following embodiments with reference to schematic Drawings explained and described. Showing:

1 die Anordnung des zu verbindenden Rohres und Fittings; 1 the arrangement of the pipe to be connected and fittings;

2 den Erhitzungsvorgang des Rohres und Fittings nach 1 mittels einer Heizvorrichtung; 2 the heating process of the pipe and fittings after 1 by means of a heating device;

3 die unlösbare Verbindung des Rohres und Fittings nach 1 und 2 nach dem Schweißvorgang; 3 the permanent connection of the pipe and fittings after 1 and 2 after the welding process;

4 den Heizring. 4 the heating ring.

Weitere Einzelheiten, Erläuterungen und Merkmale der Erfindung sind aus der Beschreibung einzelner Figuren und der Patentansprüche im Folgenden zu erschließen:Further Details, explanations and features of the invention are apparent from the description of individual figures and the claims in the following:

1 ein Axialschnitt der zwei Verbindungskörper – ein Verbundrohr (2) aus zwei Schichten aus Kunststoff (2a, 2c) und einer Schicht aus Metall (2b) und ein Fitting (1) aus Kunststoff mit einer inneren Hülse (1b) aus Metall, wobei die Hülse einen radialen Fixierzahn (1d) aufweist und der Fitting an der selben Stelle eine Rille (1d), der Fitting weist auch eine konische radiale Vertiefung (1c) auf, die nach dem Erhitzungsprozess genau der Anliegefläche des Rohrendes (2) entspricht; 1 an axial section of the two connecting bodies - a composite pipe ( 2 ) made of two layers of plastic ( 2a . 2c ) and a layer of metal ( 2 B ) and a fitting ( 1 ) made of plastic with an inner sleeve ( 1b ) made of metal, wherein the sleeve has a radial fixing tooth ( 1d ) and the fitting in the same place a groove ( 1d ), the fitting also has a conical radial recess ( 1c ), which after the heating process exactly the contact surface of the pipe end ( 2 ) corresponds;

2 ein Axialschnitt der bereits aufgeschobenen Verbindungskörper (1 und 2) auf eine beispielsweise elektrische Heizvorrichtung (3) aus Metall, an die mittels einer Schraube (6) und Mutter (7) zwei Heizringe angebracht sind. Ein Heizring (4) entspricht dabei den Konturen des zu verbindenden Rohrendes (2), der zweite Heizring (5) entspricht den Konturen des mit dem Rohr (2) zu verbindenden Fittings (1); 2 an axial section of the already suspended connecting body ( 1 and 2 ) to an example electric heating device ( 3 ) of metal, to which by means of a screw ( 6 ) and mother ( 7 ) two heating rings are attached. A heating ring ( 4 ) corresponds to the contours of the pipe end to be connected ( 2 ), the second heating ring ( 5 ) corresponds to the contours of the pipe ( 2 ) fittings to be connected ( 1 );

3 ein Axialschnitt einer Schweißverbindung der Verbindungskörper (1 und 2) nach einer bereits durchgeführten Aufschmelzung der Anliegeflächen der beiden Elemente. Dabei bilden sich bei dieser Darstellung Schweißnähte (8) aus Kunststoff. Das Ende des Verbundrohres (2) und die darin liegende und unverformte Metallschicht wird vom geschmolzenen Kunststoff (9) der beiden Verbindungskörper (1 und 2) vollkommen eingeschlossen; 3 an axial section of a welded joint of the connecting body ( 1 and 2 ) after an already performed melting of the contact surfaces of the two elements. In this case, welds ( 8th ) made of plastic. The end of the composite pipe ( 2 ) and the underlying and undeformed metal layer is from the molten plastic ( 9 ) of the two connecting bodies ( 1 and 2 completely enclosed;

4 ein Frontalschnitt und ein Axialschnitt des Heizringes (4) mit einem Außenring (4a) und einem Innenring (4b), Austrittsöffnungen (4c) zum Entweichen des überflüssigen Materials und einer Schraubenöffnung (4d) zur Anbringung auf die Heizvorrichtung. Der Außenring (4a) weist bei dieser Darstellung ein Rillenprofil (4e) auf, der ebenfalls das Austreten flüssigen Materials ermöglicht. 4 a frontal section and an axial section of the heating ring ( 4 ) with an outer ring ( 4a ) and an inner ring ( 4b ), Outlet openings ( 4c ) to escape the superfluous material and a screw opening ( 4d ) for attachment to the heater. The outer ring ( 4a ) has in this illustration a groove profile ( 4e ), which also allows leakage of liquid material.

Claims (5)

Schweißsystem für mehrschichtige Verbundrohre aus Kunststoff und Metall zur Herstellung einer unlösbaren Verbindung zwischen Fitting (1) und Rohr (2) durch das Aufheizen des Rohrendes und der Anliegefläche (1c) des Fittings (1) mittels einer Heizvorrichtung (3) mit angebrachten ringförmigen Heizelementen (4 und 5), dadurch gekennzeichnet, dass der Fitting (1) so ausgebildet ist, dass er nach Erhitzen seines Hohlraumes (1c) und des mit ihm zu verbindenden Rohres (2) das Rohrende von seiner Innen- als auch von seiner Außenwand formschlüssig verbindet.Welding system for multilayer composite pipes made of plastic and metal for producing a permanent connection between fitting ( 1 ) and pipe ( 2 ) by the heating of the pipe end and the contact surface ( 1c ) of the fitting ( 1 ) by means of a heating device ( 3 ) with attached annular heating elements ( 4 and 5 ), characterized in that the fitting ( 1 ) is designed so that after heating its cavity ( 1c ) and the pipe to be connected to it ( 2 ) connects the pipe end of its inner and outer wall form-fitting manner. Fitting (1) nach Anspruch 1, dadurch gekennzeichnet, dass er in seinem Inneren eine Hülse (1b) aus hitzeresistentem Material oder aus Metall zur Stabilisierung seiner Innenwand aufweist.Fitting ( 1 ) according to claim 1, characterized in that it comprises in its interior a sleeve ( 1b ) made of heat-resistant material or metal for stabilizing its inner wall. Fitting (1) und Hülse (1b) nach einem der vorgehenden Ansprüche, dadurch gekennzeichnet, dass der Fitting (1) eine Einrastrille (1d) und die Hülse (1b) einen Einrastzahn (1d) ausbilden, wodurch die Hülse (1b) im Fitting (1) einrastet.Fitting ( 1 ) and sleeve ( 1b ) according to one of the preceding claims, characterized in that the fitting ( 1 ) a latching groove ( 1d ) and the sleeve ( 1b ) a latch tooth ( 1d ), whereby the sleeve ( 1b ) in the fitting ( 1 ) engages. Ringförmiges Heizelement (4) nach Anspruch 1, dadurch gekennzeichnet, dass der Außenring (4a) auf der Innenseite ein Rillenprofil (4e) aufweist, das das Austreten von geschmolzenem Kunststoff ermöglicht.Annular heating element ( 4 ) according to claim 1, characterized in that the outer ring ( 4a ) on the inside a groove profile ( 4e ), which allows the escape of molten plastic. Ringförmiges Heizelement (4) nach einem der vorgehenden Ansprüche, dadurch gekennzeichnet, dass das ringförmige Heizelement (4) mindestens eine kleinere Öffnung (4c) aufweist, die das Austreten von geschmolzenem Kunststoff ermöglicht.Annular heating element ( 4 ) according to one of the preceding claims, characterized in that the annular heating element ( 4 ) at least one smaller opening ( 4c ), which allows the escape of molten plastic.
DE102008006068A 2008-01-25 2008-01-25 Multi-layered composite pipes welding system for making undetachable connection between fitting and pipes, has fitting designed such that fitting connects pipe ends from walls of fitting in form-fit manner after heating of recess and pipes Active DE102008006068B3 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096908A1 (en) * 2010-02-03 2011-08-11 Kalde Klima Orta Basinc Fittings Ve Valf Sanayi Anonim Sirketi A screw plate for combining pipe and connection components
CN102294551A (en) * 2010-06-23 2011-12-28 诺马德国有限责任公司 Pipe arrangement
WO2012008933A1 (en) * 2010-07-15 2012-01-19 Novaplast Plastik Sanayi Ve Ticaret A.S (polypropylene) plastic pipe welding machine with special safety ring and a welding adaptor with special safety ring
DE202011109822U1 (en) 2011-06-06 2012-03-15 Vinko Reberšek Extended sleeve for the welding system for multilayer composite pipes made of plastic and metal
DE102011103414A1 (en) 2011-06-06 2012-12-06 Vinko Reberšek Extended inner case for non-detachably connecting plastic and/or metal composite pipe with e.g. polypropylene-random fitting, has region collecting molten material after heating and connecting pipe and fitting with each other
DE102012014729A1 (en) 2012-07-25 2014-01-30 Vinko Reberšek Elongated sleeve for welding system used for connection of multi-layer composite pipes, has sleeve main portion which is formed in inner side of pipes by heating and joining ends of pipes and bearing surface of fitting portion
DE102010008291B4 (en) * 2010-02-17 2016-04-28 Franz-Josef Riesselmann Multilayer pipe made of plastic and metal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1831453U (en) * 1961-01-04 1961-05-18 Fischer Ag Georg WELDED JOINT FOR TWO PIPE ELEMENTS MADE OF PLASTIC.
EP0263980A2 (en) * 1986-10-14 1988-04-20 Georg Fischer Aktiengesellschaft Apparatus and method for fusion joining plastic pipe
DE3808229A1 (en) * 1988-03-11 1989-09-21 Vdp Versuchsanstalt Fuer Daten Sleeve for welding plastic pipes and profiles
EP0711948B1 (en) * 1994-10-19 1998-01-14 agru Alois Gruber G.m.b.H. Welding sleeve for connecting tubular parts of plastics
DE19913836A1 (en) * 1999-03-26 2000-09-28 Gerodur Mpm Kunststoffverarbei Process for producing a pipe connection and pipeline

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1831453U (en) * 1961-01-04 1961-05-18 Fischer Ag Georg WELDED JOINT FOR TWO PIPE ELEMENTS MADE OF PLASTIC.
EP0263980A2 (en) * 1986-10-14 1988-04-20 Georg Fischer Aktiengesellschaft Apparatus and method for fusion joining plastic pipe
DE3808229A1 (en) * 1988-03-11 1989-09-21 Vdp Versuchsanstalt Fuer Daten Sleeve for welding plastic pipes and profiles
EP0711948B1 (en) * 1994-10-19 1998-01-14 agru Alois Gruber G.m.b.H. Welding sleeve for connecting tubular parts of plastics
DE19913836A1 (en) * 1999-03-26 2000-09-28 Gerodur Mpm Kunststoffverarbei Process for producing a pipe connection and pipeline

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096908A1 (en) * 2010-02-03 2011-08-11 Kalde Klima Orta Basinc Fittings Ve Valf Sanayi Anonim Sirketi A screw plate for combining pipe and connection components
EA020723B1 (en) * 2010-02-03 2015-01-30 Калде Клима Орта Басиндж Фиттингс Ве Валф Санайи Аноним Сиркети Method for combining connection components with polypropylene pipe pp-r
DE102010008291B4 (en) * 2010-02-17 2016-04-28 Franz-Josef Riesselmann Multilayer pipe made of plastic and metal
CN102294551A (en) * 2010-06-23 2011-12-28 诺马德国有限责任公司 Pipe arrangement
EP2444707A1 (en) * 2010-06-23 2012-04-25 NORMA Germany GmbH Tubing assembly
DE102010024691B4 (en) * 2010-06-23 2017-01-05 Norma Germany Gmbh pipe arrangement
US9482376B2 (en) 2010-06-23 2016-11-01 Norma Germany Gmbh Pipe arrangement
KR101408986B1 (en) * 2010-06-23 2014-06-17 노르마 저머니 게엠베하 Pipe arrangement
CN102294551B (en) * 2010-06-23 2016-03-02 诺马德国有限责任公司 Pipe device
WO2012008933A1 (en) * 2010-07-15 2012-01-19 Novaplast Plastik Sanayi Ve Ticaret A.S (polypropylene) plastic pipe welding machine with special safety ring and a welding adaptor with special safety ring
RU2548080C2 (en) * 2010-07-15 2015-04-10 Новапласт Пластик Санайи Ве Тикарет А.С Pp pipe welding machine with special safety ring and welding adapter with said special safety ring
DE202011109822U1 (en) 2011-06-06 2012-03-15 Vinko Reberšek Extended sleeve for the welding system for multilayer composite pipes made of plastic and metal
DE102011103414A1 (en) 2011-06-06 2012-12-06 Vinko Reberšek Extended inner case for non-detachably connecting plastic and/or metal composite pipe with e.g. polypropylene-random fitting, has region collecting molten material after heating and connecting pipe and fitting with each other
DE102012014729A1 (en) 2012-07-25 2014-01-30 Vinko Reberšek Elongated sleeve for welding system used for connection of multi-layer composite pipes, has sleeve main portion which is formed in inner side of pipes by heating and joining ends of pipes and bearing surface of fitting portion

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Owner name: KE KELIT KUNSTSTOFFWERK GESELLSCHAFT M.B.H., AT

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