DE102014008231B4 - Device for connecting plastic pipes and method for arranging a welding ring in a groove of a plastic pipe - Google Patents

Device for connecting plastic pipes and method for arranging a welding ring in a groove of a plastic pipe Download PDF

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Publication number
DE102014008231B4
DE102014008231B4 DE102014008231.8A DE102014008231A DE102014008231B4 DE 102014008231 B4 DE102014008231 B4 DE 102014008231B4 DE 102014008231 A DE102014008231 A DE 102014008231A DE 102014008231 B4 DE102014008231 B4 DE 102014008231B4
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Prior art keywords
loop
welding ring
plastic
fixing
groove
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DE102014008231.8A
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German (de)
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DE102014008231A1 (en
Inventor
Ville Rautiainen
Ari Hellstén
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Bellapipe Oy
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Bellapipe Oy
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Priority to DE102014008231.8A priority Critical patent/DE102014008231B4/en
Priority to PL15731633T priority patent/PL3155307T3/en
Priority to DK15731633.2T priority patent/DK3155307T3/en
Priority to EP15731633.2A priority patent/EP3155307B1/en
Priority to LTEP15731633.2T priority patent/LT3155307T/en
Priority to PCT/FI2015/050390 priority patent/WO2015189465A1/en
Publication of DE102014008231A1 publication Critical patent/DE102014008231A1/en
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Publication of DE102014008231B4 publication Critical patent/DE102014008231B4/en
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    • 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
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B29C65/348—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/70—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
    • B29C66/73—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 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
    • B29C66/739—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 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
    • B29C66/7392—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 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
    • B29C66/73921—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 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
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3424—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding said at least a single wire having the form of a coil spring
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5064—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped
    • B29C65/5071—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped and being composed by one single element
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5064—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped
    • B29C65/5078—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped and being composed by several elements
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5092—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the tape handling mechanisms, e.g. using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—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
    • B29C66/52296—Joining tubular articles involving the use of a socket said socket comprising sealing elements, e.g. gaskets
    • 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
    • B29C66/55—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 sealing elements being incorporated into the joints, e.g. gaskets
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

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

Abstract

Vorrichtung zum Verbinden von Kunststoffrohren, im Wesentlichen bestehend aus einem Schweißring (10), der einen inneren, mit einem Hohlraum versehenen Dehnschlauch aufweist, um den vorzugsweise spiralförmig ein Widerstandsheizdraht (11) geführt ist, der seinerseits von einer Kunststoffumhüllung (12) umgeben ist, welche nach dem Aufschmelzen die vollständige stoffschlüssige Verbindung der aneinanderstoßenden Kunststoffrohre herbeiführt, dadurch gekennzeichnet, dass der Schweißring (10) vor dem Einbau mindestens eine nach innen ragende Schlaufe (17) aufweist und, dass der Schweißring (10) mit einer Einrichtung zur Festlegung der Schlaufe (17) versehen ist.Apparatus for connecting plastic pipes, consisting essentially of a welding ring (10) having an inner, expansion hose provided with a cavity around which is preferably spirally guided a resistance heating wire (11) which in turn is surrounded by a plastic covering (12), which, after melting, brings about the complete cohesive connection of the abutting plastic pipes, characterized in that the welding ring (10) has at least one inwardly projecting loop (17) prior to installation, and in that the welding ring (10) is provided with means for fixing the loop (17) is provided.

Description

Die Erfindung betrifft zunächst eine Vorrichtung zum Verbinden von Kunststoffrohren, im Wesentlichen bestehend aus einem Schweißring, der einen inneren, mit einem Hohlraum versehenen Dehnschlauch aufweist, um den vorzugsweise spiralförmig ein Widerstandsheizdraht geführt ist, der seinerseits von eine Kunststoffumhüllung umgeben ist, welche nach dem Aufschmelzen die vollständige stoffschlüssige Verbindung der aneinanderstoßenden Kunststoffrohre herbeiführt. The invention firstly relates to a device for connecting plastic pipes, consisting essentially of a welding ring having an inner, provided with a cavity expansion hose to which a resistance heating wire is preferably guided spirally, which in turn is surrounded by a plastic sheath, which after melting the complete cohesive connection of the abutting plastic pipes brought about.

Aus dem druckschriftlich nicht belegbaren Stand der Technik sind derartige Vorrichtungen zur dauerhaft dichten, wurzelfesten längskraftschlüssigen und zugfesten Verbindung von Abwasserrohren aus Polypropylen (PP) bekannt, die für kommunale und häusliche Entwässerung, Industrie und Deponiebau eingesetzt werden. Derartige Vorrichtungen, kurz auch Schweißringe genannt, werden hierbei in die in den Verbindungsmuffen der Rohre vorhandenen Sicken zur Aufnahme einer Gummidichtung eingesetzt. Hierzu wird die Gummidichtung zunächst entfernt und dann der Schweißring in die Sicke eingesetzt. Da die in der Muffe angeordnete Sicke wie auch der Schweißring, jedoch einen größeren Durchmesser aufweisen als der kleinste Durchmesser der Muffe, ist es relativ problematisch, den Übermaß aufweisenden Schweißring so in die Sicke einzulegen, dass auch keine Beschädigung des Schweißrings insbesondere im Bereich der Anschlussdrähte hervorgerufen wird und die Anschlussdrähte sauber und parallel aus der Muffe herausgeführt werden. From the non-assignable prior art such devices for permanently dense, root-resistant restrained and tensile strength connection of sewage pipes made of polypropylene (PP) are known, which are used for municipal and domestic drainage, industry and landfill. Such devices, also called welding rings for short, are used in this case in the beads present in the connecting sleeves of the tubes for receiving a rubber seal. For this purpose, the rubber seal is first removed and then inserted the welding ring in the bead. Since arranged in the sleeve bead as well as the welding ring, but have a larger diameter than the smallest diameter of the sleeve, it is relatively problematic to insert the excess weld ring so in the bead, that no damage to the weld ring, especially in the field of leads caused and the leads are clean and parallel out of the sleeve out.

Die Aufgabe der Erfindung besteht deshalb darin, eine neue Vorrichtung zum Verbinden von Kunststoffrohren – kurz Schweißring genannt – zu schaffen, welche einfacher und schneller in der Muffe eines Kunststoffrohres zu befestigen ist, wobei Beschädigungen des Schweißrings ausgeschlossen sein sollen. The object of the invention is to provide a new device for connecting plastic pipes - called welding ring for short - to create, which is easier and faster to attach in the sleeve of a plastic pipe, with damage to the weld ring should be excluded.

Die Lösung der Aufgabe ergibt sich aus den Merkmalen des Anspruchs 1, insbesondere den Merkmalen des kennzeichnenden Teils, wonach der Schweißring vor dem Einbau mindestens eine nach innen ragende Schlaufe aufweist und wonach der Schweißring mit einer Einrichtung zur Festlegung der Schlaufe versehen ist. The solution of the problem arises from the features of claim 1, in particular the features of the characterizing part, according to which the welding ring has at least one inwardly projecting loop prior to installation and then the welding ring is provided with a device for fixing the loop.

Der wesentliche Vorteil des erfindungsgemäßen Schweißrings besteht zunächst darin, dass der Schweißring mit einer Einrichtung zur Festlegung der Schlaufe versehen ist. Hierdurch wird auf vorteilhafte Weise verhindert, dass sich die Position der nach innen ragenden Schlaufe vor dem Einbau in die Muffe eines Kunststoffrohres verändert. Darüber hinaus kann dann der Schweißring einfach zunächst einseitig in die Sicke der Muffe des Kunststoffrohres eingelegt werden, wobei dann nach der Beseitigung der Einrichtung zur Festlegung der Schlaufe durch Nachaußendrücken der nach innen ragenden Schlaufe des Schweißrings sehr schnell der Schweißring vollständig in der Sicke verankert werden kann. Zugleich können auf ebenfalls einfache Weise die Anschlussdrähte sauber und parallel aus der Muffe herausgeführt werden. The main advantage of the welding ring according to the invention consists firstly in that the welding ring is provided with a device for fixing the loop. As a result, it is advantageously prevented that the position of the inwardly projecting loop changes prior to installation in the sleeve of a plastic pipe. In addition, the welding ring can then simply be inserted on one side into the bead of the plastic pipe, then after removal of the device for fixing the loop by Nachaußendrücken the inwardly projecting loop of the welding ring very quickly the welding ring can be completely anchored in the bead , At the same time, the connecting wires can be led out of the sleeve in a likewise simple manner, cleanly and in parallel.

Zu diesem Zweck kann die Schlaufe mit einer als Kabelbinder, Draht oder dergleichen ausgebildeten Einrichtung zur Festlegung gesichert sein. For this purpose, the loop may be secured with a designed as a cable tie, wire or the like means for fixing.

Bei einer bevorzugten Ausbildung der Erfindung ist die Schlaufe dem mit Kontaktdrähten versehenen, aus aneinanderstoßenden und aneinander befestigten Schweißringenden gebildeten Verbindungsbereichen gegenüberliegend angeordnet, wodurch vorteilhafterweise bei der Erstellung der Schlaufe keine Kräfte auf dem Verbindungsbereich der Schweißringenden ausgeübt werden, durch die die elektrische Kontaktierung beschädigt werden könnte. In a preferred embodiment of the invention, the loop is arranged opposite to the contact areas provided with contact wires, formed of contiguous and secured to each other Schweißringenden connecting areas, whereby advantageously no forces are exerted on the connection region of the weld ring ends in the creation of the loop, through which the electrical contact could be damaged ,

Auch könnten auf vorteilhafte Weise die Kontaktdrähte außerhalb des Verbindungsbereichs angeordnet sein, wobei im Bereich der Schweißringenden eine Einrichtung zur Herstellung eines elektrischen Kontaktes der gegenüberliegenden Enden der Widerstandsdrähte angeordnet ist. Dies wirkt sich vorteilhaft dahingehend aus, dass die Gefahr einer Beschädigung der Kontaktdrähte weiter verringert wird. Also, advantageously, the contact wires could be arranged outside the connection region, wherein in the region of the welding ring ends a device for producing an electrical contact of the opposite ends of the resistance wires is arranged. This has the advantageous effect that the risk of damage to the contact wires is further reduced.

Vorzugsweise könnte im Zusammenhang mit der letztgenannten Ausführungsform die Kontaktdrähte vorzugsweise um 90° versetzt zum Verbindungsbereich angeordnet sein. Preferably, in connection with the last-mentioned embodiment, the contact wires could preferably be arranged at 90 ° to the connection region.

Die Erfindung betrifft des Weiteren ein Verfahren zur Anordnung eines Schweißrings in einer Nut eines Kunststoffrohres. The invention further relates to a method for arranging a welding ring in a groove of a plastic pipe.

Ausgehend von dem oben genannten Stand der Technik sowie der oben genannten Aufgabe besteht die Lösung in den folgenden Verfahrensschritten:

  • – der Schweißring wird zum Zwecke der Bildung einer Schlaufe nach innen eingedrückt;
  • – die Schlaufe wird mit einer Einrichtung zur Festlegung der Schlaufe versehen;
  • – der Schweißring wird dann mit dem der Schlaufe gegenüberliegenden Bereich in die Nut des Rohres eingeführt;
  • – die Einrichtung zur Festlegung der Schlaufe wird durchtrennt; und
  • – der Schlaufenbereich wird ebenfalls in die Nut gedrückt.
Based on the above-mentioned prior art and the above object, the solution consists in the following process steps:
  • - The welding ring is pressed for the purpose of forming a loop inwards;
  • - The loop is provided with means for fixing the loop;
  • - The welding ring is then inserted with the area opposite the loop in the groove of the tube;
  • - the device for fixing the loop is severed; and
  • - The loop area is also pressed into the groove.

Das erfindungsgemäße Verfahren hat den wesentlichen Vorteil, dass dadurch auf sehr einfache und schnelle Weise der Schweißring in eine Sicke der Muffe eines Kunststoffrohres eingesetzt werden kann, ohne dass die Gefahr besteht, dass der Schweißring in seiner Funktion beeinträchtigt wird. The inventive method has the significant advantage that in a very simple and fast way, the welding ring can be used in a bead of the sleeve of a plastic pipe, without the risk that the welding ring is impaired in its function.

Zusätzlich wird die Schlaufe des Schweißrings vor der Anordnung in einer Nut des Kunststoffrohres mit einer Einrichtung zur Festlegung der Schlaufe versehen. Dadurch wird sichergestellt, dass sich die Position der nach innen ragenden Schlaufe vor dem Einbau nicht verändert. In addition, the loop of the welding ring is provided with a means for fixing the loop prior to placement in a groove of the plastic tube. This will ensure that the position of the inwardly protruding loop does not change prior to installation.

Weitere Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels. Es zeigen: Further advantages of the present invention will become apparent from the following description of an embodiment. Show it:

1 Seitenansicht einer Vorrichtung zum Verbinden von Kunststoffrohren, kurz Schweißring genannt, 1 Side view of a device for connecting plastic pipes, called welding ring for short,

2 Seitenansicht eines Schweißrings gemäß 1 mit einer Schlaufe, 2 Side view of a welding ring according to 1 with a loop,

3 Seitenansicht eines Schweißrings gemäß 1 mit maximaler Schlaufe und 3 Side view of a welding ring according to 1 with maximum loop and

4 bis 7 Stirnansichten eines Kunststoffrohres mit der Darstellung verschiedener Phasen des Einsetzens eines Schweißrings. 4 to 7 End views of a plastic tube showing various phases of the insertion of a welding ring.

In den Zeichnungen ist eine Vorrichtung zum Verbinden von Kunststoffrohren nachfolgend Schweißring genannt, insgesamt mit der Bezugsziffer 10 bezeichnet. In the drawings, a device for connecting plastic pipes is hereinafter called welding ring, in total by the reference numeral 10 designated.

Der Schweißring 10 besteht auf nicht dargestellte Weise aus einem inneren mit einem Hohlraum versehenen Dehnschlauch, um den vorzugsweise spiralförmig ein Widerstandsdraht 11 geführt ist, der von einer Kunststoffumhüllung 12 umgeben ist. Die Kunststoffumhüllung 12 besteht aus einem Material, welches dem Kunststoffmaterial der zu verbindenden Rohre entspricht. Als schweißbare Rohrmaterialien werden häufig Polyethylen (PE), Polyvinylchlorid (PVC) und Polypropylen (PP) eingesetzt. The welding ring 10 consists in a manner not shown from an inner provided with a cavity expansion tube to the preferably spiral a resistance wire 11 is guided, that of a plastic cladding 12 is surrounded. The plastic wrap 12 consists of a material which corresponds to the plastic material of the pipes to be joined. Polyethylene (PE), polyvinyl chloride (PVC) and polypropylene (PP) are frequently used as weldable pipe materials.

In der 1 ist ein so genannter geschlitzter Schweißring 10 mit einem Schlitz 13 dargestellt. In dem Schlitzbereich weist die Kunststoffumhüllung 12 einen ebenfalls aus Kunststoff bestehenden Verbindungsmantel 14 auf, durch den der eigentlich geschlitzte Schweißring 10 in einen geschlossenen Schweißring 10 verwandelt wird. Zusätzlich werden die beiden Enden des Widerstandsdrahtes 11 durch eine in dem Bereich des Schlitzes 13 angeordnete Quetschhülse 15 elektrisch verbunden. Letztlich sind an dem Schweißring 10 Kontaktdrähte 16 um 90° gegenüber dem Schlitz 13 versetzt angeordnet. In the 1 is a so-called slotted welding ring 10 with a slot 13 shown. In the slot area, the plastic wrap has 12 a likewise made of plastic connecting jacket 14 through, through the actually slotted welding ring 10 in a closed welding ring 10 is transformed. In addition, the two ends of the resistance wire 11 through one in the area of the slot 13 arranged ferrule 15 electrically connected. Ultimately, on the welding ring 10 contact wires 16 90 ° opposite the slot 13 staggered.

In der 2 ist ein Schweißring gemäß der 1 dargestellt, bei der dem Schlitz 13 gegenüberliegend eine nach innen ragende Schlaufe 17 vorhanden ist, welche mit einem Kabelbinder 18 lagegesichert ist. In the 2 is a welding ring according to the 1 shown at the slot 13 opposite an inwardly protruding loop 17 is present, which with a cable tie 18 is secured.

Ergänzend zeigt die 3 einen Schweißring 10, der Kontaktdrähte 16 aufweist, die im Bereich des Schlitzes 13 aus dem Schweißring 10 herausgeführt werden. Darüber hinaus ist dieser Schweißring 10 dem Schlitz 13 gegenüberliegend mit einer maximal ausgebildeten Schlaufe 17 versehen, die ebenfalls mit einem Kabelbinder 18 gesichert ist. Aufgrund der deutlich größer ausgebildeten Schlaufe 17 ist der verbleibende Restdurchmesser des Schweißrings 10 mit Schlaufe gemäß 3 geringer als bei der 2. In addition, the shows 3 a welding ring 10 , the contact wires 16 that is in the area of the slot 13 from the welding ring 10 be led out. In addition, this welding ring 10 the slot 13 opposite with a maximum trained loop 17 provided, which also with a cable tie 18 is secured. Due to the much larger loop 17 is the remaining residual diameter of the welding ring 10 with loop according to 3 less than the 2 ,

In den 4 bis 7 ist der Einbauvorgang eines Schweißrings 10 in eine Muffe 19 eines Kunststoffrohres dargestellt. Man erkennt in der 4 die Muffe 19 und zusätzlich gestrichelt die Innenumfangsfläche einer Sicke 20. In the 4 to 7 is the installation process of a welding ring 10 in a sleeve 19 represented a plastic tube. One recognizes in the 4 the sleeve 19 and additionally dashed the inner peripheral surface of a bead 20 ,

In der 4 ist ein Schweißring 10 gemäß 2 mit innen liegender Schlaufe 17 und einer Sicherung durch einen Kabelbinder 18 teilweise in die Sicke 20 eingesetzt worden. Durch eine angedeutete Schere 21 wird der Kabelbinder 18 zerschnitten, wodurch – wie in den 5 bis 7 dargestellt – die Schlaufe 17 frei wird und durch eine geringe Kraft F von dem Schlitz 13 weggedrückt werden kann, so dass sich der Schweißring 10 insgesamt in die Sicke 20 einfügt. In the 4 is a welding ring 10 according to 2 with inner loop 17 and a fuse through a cable tie 18 partly in the bead 20 been used. By an indicated scissors 21 becomes the cable tie 18 cut, whereby - as in the 5 to 7 shown - the loop 17 becomes free and by a small force F from the slot 13 can be pushed away, so that the welding ring 10 total in the bead 20 fits.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

10 10
Schweißring weld ring
11 11
Widerstandsdraht resistance wire
12 12
Kunststoffumhüllung Plastic covering
13 13
Schlitz slot
14 14
Verbindungsmantel joint-cover
15 15
Quetschhülse ferrule
16 16
Kontaktdrähte contact wires
17 17
Schlaufe loop
18 18
Kabelbinder cable ties
19 19
Muffe sleeve
20 20
Sicke Beading
21 21
Schere scissors
F F
Kraft force

Claims (6)

Vorrichtung zum Verbinden von Kunststoffrohren, im Wesentlichen bestehend aus einem Schweißring (10), der einen inneren, mit einem Hohlraum versehenen Dehnschlauch aufweist, um den vorzugsweise spiralförmig ein Widerstandsheizdraht (11) geführt ist, der seinerseits von einer Kunststoffumhüllung (12) umgeben ist, welche nach dem Aufschmelzen die vollständige stoffschlüssige Verbindung der aneinanderstoßenden Kunststoffrohre herbeiführt, dadurch gekennzeichnet, dass der Schweißring (10) vor dem Einbau mindestens eine nach innen ragende Schlaufe (17) aufweist und, dass der Schweißring (10) mit einer Einrichtung zur Festlegung der Schlaufe (17) versehen ist. Device for connecting plastic pipes, essentially consisting of a welding ring ( 10 ), which has an inner, provided with a cavity expansion hose around which preferably a resistance heating wire ( 11 ) guided in turn by a plastic envelope ( 12 ), which after melting the complete cohesive Connection of the abutting plastic pipes brought about, characterized in that the welding ring ( 10 ) before installation at least one inwardly projecting loop ( 17 ) and that the welding ring ( 10 ) with a device for fixing the loop ( 17 ) is provided. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schlaufe (17) mit einer als Kabelbinder (18) oder Draht ausgebildeten Einrichtung zur Festlegung gesichert ist. Device according to claim 1, characterized in that the loop ( 17 ) with a cable tie ( 18 ) or wire-formed device is secured for fixing. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schlaufe (17) dem mit Kontaktdrähten (16) versehenen, aus aneinanderstoßenden und aneinander befestigten Schweißringenden gebildeten Verbindungsbereich gegenüberliegend angeordnet ist. Device according to claim 1, characterized in that the loop ( 17 ) with contact wires ( 16 ), is arranged opposite to each other from adjoining and attached to each other Schweißringenden connecting region. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Kontaktdrähte (16) außerhalb des Verbindungsbereichs angeordnet sind und dass im Bereich der Schweißringenden eine Einrichtung zur Herstellung eines elektrischen Kontaktes der gegenüberliegenden Enden der Widerstandsdrähte (11) angeordnet ist. Device according to claim 3, characterized in that the contact wires ( 16 ) are arranged outside the connection region and in that in the region of the welding ring ends a device for establishing an electrical contact of the opposite ends of the resistance wires ( 11 ) is arranged. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Kontaktdrähte (16) vorzugsweise um 90° versetzt zum Verbindungsbereich angeordnet sind. Device according to claim 4, characterized in that the contact wires ( 16 ) are preferably arranged offset by 90 ° to the connection region. Verfahren zur Anordnung eines Schweißrings (10) in einer Nut eines Kunststoffrohres, gekennzeichnet durch folgende Verfahrensschritte: – dass der Schweißring (10) zum Zwecke der Bildung einer Schlaufe (17) nach innen eingedrückt wird, – dass die Schlaufe (17) mit einer Einrichtung zur Festlegung der Schlaufe (17) versehen wird, – dass der Schweißring (10) dann mit dem der Schlaufe (17) gegenüberliegenden Bereich in die Nut des Rohres eingeführt wird, – dass die Einrichtung zur Festlegung der Schlaufe (17) durchtrennt wird, – dass der Schlaufenbereich ebenfalls in die Nut gedrückt wird. Method for arranging a welding ring ( 10 ) in a groove of a plastic pipe, characterized by the following method steps: - that the welding ring ( 10 ) for the purpose of forming a loop ( 17 ) is pressed inwards, - that the loop ( 17 ) with a device for fixing the loop ( 17 ), - that the welding ring ( 10 ) then with the loop ( 17 ) is introduced into the groove of the tube, that the means for fixing the loop ( 17 ) is cut, - that the loop area is also pressed into the groove.
DE102014008231.8A 2014-06-11 2014-06-11 Device for connecting plastic pipes and method for arranging a welding ring in a groove of a plastic pipe Active DE102014008231B4 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE102014008231.8A DE102014008231B4 (en) 2014-06-11 2014-06-11 Device for connecting plastic pipes and method for arranging a welding ring in a groove of a plastic pipe
PL15731633T PL3155307T3 (en) 2014-06-11 2015-06-08 A device for connecting plastic pipes as well as a method for the arrangement of a welding ring in a groove of a plastic pipe
DK15731633.2T DK3155307T3 (en) 2014-06-11 2015-06-08 A device for connecting plastic pipes as well as a method for arranging a welding ring in a groove in a plastic pipe
EP15731633.2A EP3155307B1 (en) 2014-06-11 2015-06-08 A device for connecting plastic pipes as well as a method for the arrangement of a welding ring in a groove of a plastic pipe
LTEP15731633.2T LT3155307T (en) 2014-06-11 2015-06-08 A device for connecting plastic pipes as well as a method for the arrangement of a welding ring in a groove of a plastic pipe
PCT/FI2015/050390 WO2015189465A1 (en) 2014-06-11 2015-06-08 A device for connecting plastic pipes as well as a method for the arrangement of a welding ring in a groove of a plastic pipe

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DE102014008231.8A DE102014008231B4 (en) 2014-06-11 2014-06-11 Device for connecting plastic pipes and method for arranging a welding ring in a groove of a plastic pipe

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DE102014008231B4 true DE102014008231B4 (en) 2017-09-07

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09242974A (en) * 1996-03-08 1997-09-16 Kubota Corp Pipe joint for resin pipe
DE19781628T1 (en) * 1996-03-05 1999-06-17 Uponor Bv Process for joining plastic pipes, connecting ring therefor and pipe connection created thereby

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19781628T1 (en) * 1996-03-05 1999-06-17 Uponor Bv Process for joining plastic pipes, connecting ring therefor and pipe connection created thereby
JPH09242974A (en) * 1996-03-08 1997-09-16 Kubota Corp Pipe joint for resin pipe

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