DE3903551C2 - Connection part of a line coupling - Google Patents

Connection part of a line coupling

Info

Publication number
DE3903551C2
DE3903551C2 DE3903551A DE3903551A DE3903551C2 DE 3903551 C2 DE3903551 C2 DE 3903551C2 DE 3903551 A DE3903551 A DE 3903551A DE 3903551 A DE3903551 A DE 3903551A DE 3903551 C2 DE3903551 C2 DE 3903551C2
Authority
DE
Germany
Prior art keywords
temperature
measuring device
connecting part
color
part according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE3903551A
Other languages
German (de)
Other versions
DE3903551A1 (en
Inventor
Volker Dr Roesch
Bernd Goller
Joachim Dipl Ing Pruefer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voss Automotive GmbH
Original Assignee
Armaturenfabrik Hermann Voss GmbH and Co
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 Armaturenfabrik Hermann Voss GmbH and Co filed Critical Armaturenfabrik Hermann Voss GmbH and Co
Priority to DE3903551A priority Critical patent/DE3903551C2/en
Publication of DE3903551A1 publication Critical patent/DE3903551A1/en
Application granted granted Critical
Publication of DE3903551C2 publication Critical patent/DE3903551C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/52293—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being external
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin welding
    • 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
    • B29C66/01—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
    • B29C66/90—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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91218—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods using colour change, e.g. using separate colour indicators
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the parts to be joined
    • 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
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like

Landscapes

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

Description

Die Erfindung betrifft ein Verbindungsteil, insbesondere einen Stecker, für eine Leitungskupplung, bestehend aus einem Kunststoff-Verbindungskörper und einem mit diesem in einem Verbindungsbereich durch Reibschweißung verbundenen Kunststoff-Rohrstück.The invention relates to a connecting part, in particular a plug, for a cable coupling, consisting of a plastic connector body and one with this in a connection area connected by friction welding Plastic pipe piece.

Die DE-Z. "Plastverarbeiter" 29 (1978) Nr. 6, Seiten 319 bis 324 behandelt das Thema "Reibschweißen von Kunststoffen bei Chemierohren". Dabei wird auch grundsätzlich ein gat­ tungsgemäßes Verbindungsteil beschrieben, wobei ein Rohr­ ende (Rohrstück) mit einer Bundbuchse (Verbindungskörper) durch Reibschweißung verbunden wird.The DE-Z. "Plastververarbeitung" 29 (1978) No. 6, pages 319 to 324 deals with the subject "Friction welding of plastics with chemical tubes ". In doing so, a gat is always used described connecting part, wherein a tube end (pipe section) with a collar bushing (connecting body) is connected by friction welding.

Derartige Verbindungsteile werden z. B. auch zum Verbinden von Druckmittelleitungen, wie Bremsleitungen u. dgl., verwendet (vgl. auch die ältere, nachveröffentlichte Anmeldung P 37 41 250.7, Fig. 5). Dabei wird zur stoff­ schlüssigen Verbindung des z. B. als Stecker ausgebildeten Verbindungskörpers mit einem Ende eines Kunststoff-Rohres zumindest eines der beiden Teile in eine zu dem anderen Teil relative Rotation versetzt, während die beiden Teile dann in axialer Richtung zusammengeführt werden. Aufgrund der Relativbewegung bzw. -drehung zwischen den beiden Tei­ len tritt eine hohe Reibung an der Berührungsfläche und damit eine Temperaturzunahme auf, die zum Schmelzen des Kunststoffmate­ rials und somit zum Verschweißen der Teile führt. Bei diesem sog. Reibschweißen ist jedoch eine Kontrolle der Qualität der Schweißverbindung schwierig und in der Regel nur durch stichprobenartige Werkstoffprüfung möglich, die aber nachteiligerweise besondere Prüfgeräte erfordert und darüberhinaus zumeist zur Zerstörung des geprüften Verbin­ dungsteils führt.Such connecting parts are such. B. also for connecting fluid lines, such as brake lines and. Like., used (see also the older, post-published application P 37 41 250.7, Fig. 5). It is the material connection of the z. B. formed as a connector body with one end of a plastic tube at least one of the two parts in a relative to the other part rotation, while the two parts are then brought together in the axial direction. Due to the relative movement or rotation between the two parts, high friction occurs on the contact surface and thus an increase in temperature, which leads to the melting of the plastic material and thus to the welding of the parts. In this so-called friction welding, however, it is difficult to check the quality of the welded joint and generally only possible by means of random material testing, which disadvantageously requires special test equipment and moreover usually leads to the destruction of the tested connecting part.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Ver­ bindungsteil der gattungsgemäßen Art so zu verbessern, daß eine zerstörungsfreie Kontrolle der Qualität der Schweiß­ verbindung auf einfache und zuverlässige Weise ohne besondere Prüfgeräte möglich ist.The invention is therefore based on the object, a Ver Binding part of the generic type to improve so that a non-destructive control of the quality of the sweat connection in a simple and reliable way without special test equipment is possible.

Erfindungsgemäß wird dies dadurch erreicht, daß der Verbin­ dungskörper und/oder das Rohrstück in der Nähe des Verbin­ dungsbereichs eine Temperatur-Meßeinrichtung aufweisen/ aufweist. Erfindungsgemäß ist es hierdurch möglich, durch eine Überwachung der Temperatur im Verbindungsbereich während der Herstellung der Reibschweißung eindeutige Aussagen über die Qualität der Schweißverbindung zu treffen, da davon ausgegangen werden kann, daß ab einer bestimmten Mindesttemperatur das Material der beiden Teile ausreichend plastifiziert ist, um eine qualitativ hochwertige Schwein­ verbindung zu gewährleisten. Dies ist, im Gegensatz zu der bekannten stichprobenartigen Prüfung, vorteilhafterweise bei jedem hergestellten Verbindungsteil möglich, wodurch ein hoher Qualitätsstandard erreicht werden kann.According to the invention this is achieved in that the verb body and / or the pipe section near the connection have a temperature measuring device / having. According to the invention, this makes it possible to monitoring the temperature in the connection area unique during the manufacture of the friction weld Make statements about the quality of the welded joint, since it can be assumed that from a certain Minimum temperature the material of the two parts is sufficient is plasticized to a high quality pig to ensure connection. This is contrary to that known random test, advantageously at every manufactured connecting part possible, whereby a high quality standard can be achieved.

Besonders vorteilhaft ist es, wenn die Meßeinrichtung aus mindestens einer oberflächlich aufgebrachten Beschichtung aus einem Material besteht, das bei Temperaturänderung zumindest eine seiner physikalischen Eigenschaften, insbesondere seine Farbe, ändert, da derartige Beschich­ tungen sehr preiswert z. B. als Temperatur-Folie oder aus Temperatur-Farbe (Lack) realisiert werden können. Die Beschichtung(en) können vorteilhafterweise nach der Herstellung der Reibschweißverbindung auf den Teilen verbleiben, da sie aufgrund ihrer geringen Dicke keine störenden Einflüsse auf die Funktion des Verbindungsteils haben.It when the measuring device is off is particularly advantageous at least one superficially applied coating made of a material that changes with temperature  at least one of its physical properties, in particular its color changes because of such coating very inexpensive z. B. as a temperature film or can be realized from temperature paint (lacquer). The coating (s) can advantageously after the Establish the friction welded joint on the parts remain because they are none due to their small thickness disruptive influences on the function of the connecting part to have.

In einer alternativen Ausführung kann die Meßeinrichtung auch durch Materialzusätze gebildet sein, die dem Material des Verbindungskörpers bzw. des Rohrstückes beigemischt sind, und die bei Temperaturänderung ihre physikalischen Eigenschaften, insbesondere ihre Farbe, ändern. In diesem Fall erübrigt sich vorteilhafterweise ein Arbeitsgang, nämlich das Aufbringen oder Befestigen der Meßeinrichtung, so daß diese Ausführung besonders preiswert ist.In an alternative embodiment, the measuring device also be formed by additions to the material of the connecting body or the pipe section and their physical changes when the temperature changes Properties, especially their color, change. In this In this case, one operation is advantageously unnecessary, namely the application or fastening of the measuring device, so that this version is particularly inexpensive.

Schließlich ist es ebenfalls möglich, die Meßeinrichtung von einem vorzugsweise elektronischen Meßfühler, z. B. einem Temperatursensor, zu bilden.Finally, it is also possible to use the measuring device from a preferably electronic sensor, e.g. B. a temperature sensor to form.

Anhand der Zeichnung soll im folgenden die Erfindung beispielhaft näher erläutert werden. Dabei zeigen:Based on the drawing, the invention is intended in the following are explained in more detail by way of example. Show:

Fig. 1 einen Axialschnitt durch eine erste Ausführungs­ form eines erfindungsgemäßen Verbindungsteils in einem noch nicht montierten Zwischenfabrikations­ zustand und Fig. 1 state an axial section through a first embodiment form of a connecting part according to the invention in an intermediate assembly not yet assembled and

Fig. 2 einen Axialschnitt einer zweiten Ausführungsform eines erfindungsgemäßen Verbindungsteils ebenfalls im Zwischenfabrikationszustand. Fig. 2 shows an axial section of a second embodiment of a connecting part according to the invention also in the intermediate state.

Ein erfindungsgemäßes Verbindungsteil 2 besteht aus einem Kunststoff-Verbindungskörper 4 und einem Kunst­ stoff-Rohrstück 6. In der Zeichnung sind der Verbindungskörper 4 und das Rohrstück 6 in einem noch nicht verbundenen Zustand dargestellt.A connecting part 2 according to the invention consists of a plastic connecting body 4 and a plastic pipe section 6 . In the drawing, the connecting body 4 and the pipe section 6 are shown in a not yet connected state.

Gemäß Fig. 1 weist der Verbindungskörper eine sich axial erstreckende, ringförmige Aufnahme 8 auf, in die das Rohr­ stück 6 axial, d. h. in Pfeilrichtung 12, eingeführt werden kann. Innerhalb der Aufnahme 8 des Verbindungskörpers 4 ist vorzugsweise über eine radiale Ringstufe 14 eine Quer­ schnittsverengung 16 gebildet, und zwar derart, daß das in Pfeilrichtung 12 eingeführte Rohrstück 6 an der Ringstufe 14 anschlägt. Zur Verbindung der beiden Teile 4, 6 wird nun eines der beiden Teile in Rotation versetzt, während das Rohrstück 6 in die Aufnahme 8 eingeführt wird. Hierdurch tritt an den Berührungsflächen, insbesondere zwischen der Ringstufe 14 und einer vorderen Stirnfläche 18 des Rohr­ stücks 6 eine Reibung auf, die zum Abschmelzen, und damit zum Verschweißen des Kunststoff-Materials führt.Referring to FIG. 1, the connecting body has an axially extending, annular housing 8, in which the pipe piece 6 axially, ie, can be introduced in direction of arrow 12. Within the receptacle 8 of the connecting body 4 , a cross-sectional constriction 16 is preferably formed via a radial ring step 14 , in such a way that the pipe section 6 introduced in the direction of arrow 12 strikes the ring step 14 . To connect the two parts 4 , 6 , one of the two parts is now set in rotation while the pipe section 6 is inserted into the receptacle 8 . As a result, friction occurs at the contact surfaces, in particular between the annular step 14 and a front end face 18 of the tube piece 6 , which leads to melting and thus to the welding of the plastic material.

In dem Ausführungsbeispiel nach Fig. 2 weist der Verbin­ dungskörper 4 lediglich einen hohlzylindrischen, in das Rohrstück 6 einführbaren Rohrstutzen 22 auf. Auch hier erfolgt die Verbindung durch Reibschweißen, indem zumindest eines der beiden Teile 4, 6 in Rotation versetzt wird, während das Rohrstück 6 in Pfeilrichtung 12 auf den Rohr­ stutzen 22 aufgeschoben wird. Dabei tritt auch hier an den Berührungsflächen, und zwar zwischen den Augen- und Innen­ umfangsflächen des Rohrstutzens 22 bzw. des Rohrstückes 6 und/oder zwischen der ringförmigen Stirnfläche 18 des Rohr­ stückes 6 und einer gegenüberliegenden, sich an den Rohrstutzen 22 anschließenden, radialen Ringstufe 24 des Verbindungskörpers 4 eine Reibung auf, die zum Abschmelzen und Verschweißen des Kunststoffmaterials führt.In the embodiment of FIG. 2, the connec tion body 4 only has a hollow cylindrical, insertable into the pipe section 6 pipe socket 22 . Here, too, the connection is made by friction welding, in that at least one of the two parts 4 , 6 is set in rotation, while the pipe section 6 is pushed onto the pipe 22 in the direction of arrow 12 . It also occurs here at the contact surfaces, namely between the eye and inner circumferential surfaces of the pipe socket 22 or the pipe section 6 and / or between the annular end face 18 of the pipe section 6 and an opposite, adjoining the pipe socket 22 , radial ring step 24 of the connecting body 4 has a friction which leads to the melting and welding of the plastic material.

Erfindungsgemäß ist nun zur Prüfung der Qualität der Schweißverbindung vorgesehen, daß der Verbindungskörper 4 und/oder das Rohrstück 6 in der Nähe des Verbindungsbereichs 26 eine Temperatur-Meßeinrichtung 30 aufweisen/aufweist.According to the invention, to check the quality of the welded connection, it is now provided that the connecting body 4 and / or the pipe section 6 in the vicinity of the connecting region 26 have / has a temperature measuring device 30 .

In dem dargestellten Ausführungsbeispiel der Erfindung besteht die Meßeinrichtung 30 aus oberflächlich aufge­ brachten Beschichtungen 32, wobei diese Beschichtungen erfindungsgemäß aus einem Material bestehen, das bei Temperaturänderung seine physikalischen Eigenschaften, insbesondere seine Farbe ändert. Dabei kann die Beschich­ tung 32 aus einer Temperatur-Folie oder einer Tempera­ tur-Farbe bestehen. Die Temperatur-Folie kann zweckmäßiger­ weise eine selbstklebende Beschichtung oder eine Adhäsions­ beschichtung aufweisen, wobei in diesem Fall die Folie dann vorteilhafterweise mehrmals verwendbar ist.In the illustrated embodiment of the invention, the measuring device 30 consists of superficially applied coatings 32 , which coatings according to the invention consist of a material which changes its physical properties, in particular its color, when the temperature changes. The coating 32 can consist of a temperature film or a tempera ture color. The temperature film can expediently have a self-adhesive coating or an adhesive coating, in which case the film can then advantageously be used several times.

Im Beispiel nach Fig. 1 ist eine Beschichtung 32 auf der Außenfläche des Verbindungskörpers 4, und zwar in einem die innerhalb der ringförmigen Aufnahme 8 gebildete Ringstufe 14 überdeckenden Oberflächenbereich, sowie alternativ oder zusätzlich hierzu eine Beschichtung 32 auf der Außenfläche des Rohrstückes 6 angeordnet, und zwar in einem Bereich, der nach der Montage unmittelbar an den Verbindungskörper 4 angrenzt. Im Beispiel nach Fig. 2 kann eine Beschichtung 32 im an die Stirnfläche 18 angrenzenden Bereich der Umfangs­ flächen des Rohrstückes 6 und/oder im an die Ringstufe 24 angrenzenden Bereich der Oberfläche des Verbindungskörpers 4 angeordnet sein. In the example according to FIG. 1, a coating 32 is arranged on the outer surface of the connecting body 4 , specifically in a surface area covering the annular step 14 formed within the annular receptacle 8 , and alternatively or additionally a coating 32 is arranged on the outer surface of the pipe section 6 , and in an area immediately adjacent to the connecting body 4 after assembly. In the example according to FIG. 2, a coating 32 can be arranged in the area of the circumferential surface of the pipe piece 6 adjacent to the end face 18 and / or in the area of the surface of the connecting body 4 adjacent to the ring step 24 .

Alternativ zu der dargestellten Beschichtung 32 ist es erfindungsgemäß ebenfalls möglich, dem Material des Verbindungskörpers 4 und/oder des Rohrstückes 6 Material­ zusätze beizumischen, die bei Temperaturänderung ihre physikalischen Eigenschaften, und zwar wiederum insbeson­ dere ihre Farbe, ändern.As an alternative to the coating 32 shown , it is also possible according to the invention to add material to the material of the connecting body 4 and / or the pipe section 6 , which change their physical properties when the temperature changes, in particular their color.

In einer weiteren, nicht dargestellten Ausführungsform der Erfindung ist die Meßeinrichtung 30 von einem vorzugsweise elektronischen Meßfühler, z. B. von einem Temperatursensor gebildet. Hinsichtlich der Anordnung des Meßfühlers gelten analog die obigen Ausführungen in Bezug auf die Beschichtung 32.In a further embodiment of the invention, not shown, the measuring device 30 is preferably a electronic sensor, for. B. formed by a temperature sensor. With regard to the arrangement of the sensor, the above statements apply analogously with regard to the coating 32 .

Die Erfindung ermöglicht eine leichte Überwachung der durch die Grenzflächenreibung hervorgerufenen Temperaturerhöhung, da sich durch diese Temperaturerhöhung insbesondere auch die Farbe der jeweiligen Meßeinrichtung 30 ändert. Dabei kann nun vorteilhafterweise eindeutig eine solche Farbe ermittelt bzw. festgelegt werden, die einer solchen Temperatur ent­ spricht, die eine qualitativ hochwertige Reibschweißverbin­ dung gewährleistet. Hierdurch braucht lediglich die Meß­ einrichtung 30 während des Reibschweißvorganges beobachtet zu werden, wobei nach Erreichen der bestimmten Farbe die Relativbewegung zwischen den beiden Teilen aufgehoben wird, wodurch dann ebenfalls die Grenzflächenreibung ausbleibt und das Material somit abkühlt. Nach diesem Vorgang ist eine qualitativ hochwertige Schweißverbindung gewährleistet, ohne daß besondere Werkstoffprüfungen erforderlich wären.The invention enables easy monitoring of the temperature increase caused by the interfacial friction, since this temperature increase in particular also changes the color of the respective measuring device 30 . In this case, it is now advantageously possible to clearly determine or set such a color which speaks a temperature which ensures a high-quality friction weld connection. As a result, only the measuring device 30 needs to be observed during the friction welding process, the relative movement between the two parts being canceled after reaching the specific color, as a result of which the interfacial friction is also absent and the material thus cools down. After this process, a high quality welded joint is guaranteed without the need for special material tests.

Claims (5)

1. Verbindungsteil, insbesondere Stecker, für eine Leitungskupplung, bestehend aus einem Kunst­ stoff-Verbindungskörper und einem mit diesem in einem Verbindungsbereich durch Reibschweißung verbundenen Kunststoff-Rohrstück, dadurch gekennzeichnet, daß der Verbindungskörper (4) und/oder das Rohrstück (6) in der Nähe des Verbindungsbereichs (26) eine Tempera­ tur-Meßeinrichtung (30) aufweisen/aufweist.1. Connecting part, in particular plug, for a cable coupling, consisting of a plastic connecting body and a plastic pipe piece connected to this in a connection area by friction welding, characterized in that the connecting body ( 4 ) and / or the pipe piece ( 6 ) in the vicinity of the connection area ( 26 ) have a temperature measuring device ( 30 ). 2. Verbindungsteil nach Anspruch 1, dadurch gekennzeichnet, daß die Meßeinrichtung (30) aus mindestens einer oberfläch­ lich aufgebrachten Beschichtung (32) aus einem Material besteht, das bei Temperaturänderung zumindest eine seiner physikalischen Eigenschaften, insbesondere seine Farbe, ändert.2. Connecting part according to claim 1, characterized in that the measuring device ( 30 ) consists of at least one surface-applied coating ( 32 ) made of a material which changes at least one of its physical properties, in particular its color, when the temperature changes. 3. Verbindungsteil nach Anspruch 2, dadurch gekennzeichnet, daß die Beschichtung (32) aus einer Temperatur-Folie oder einer Temperatur-Farbschicht besteht.3. Connecting part according to claim 2, characterized in that the coating ( 32 ) consists of a temperature film or a temperature color layer. 4. Verbindungsteil nach Anspruch 1, dadurch gekennzeichnet, daß die Meßeinrichtung (30) durch dem Material des Verbin­ dungskörpers (4) und/oder des Rohrstückes (6) beigemischte Materialzusätze gebildet ist, die bei Temperaturänderung zumindest eine ihrer physikali­ schen Eigenschaften, insbesondere ihre Farbe, ändern.4. Connecting part according to claim 1, characterized in that the measuring device ( 30 ) by the material of the connec tion body ( 4 ) and / or the pipe section ( 6 ) admixed material additives is formed, which change at least one of their physical properties, in particular their when temperature changes Color, change. 5. Verbindungsteil nach Anspruch 1, dadurch gekennzeichnet, daß die Meßeinrichtung (30) von einem vorzugsweise elektro­ nischen Meßfühler, insbesondere einem Temperatur­ sensor, gebildet ist.5. Connecting part according to claim 1, characterized in that the measuring device ( 30 ) is formed by a preferably electronic African sensor, in particular a temperature sensor.
DE3903551A 1988-02-16 1989-02-07 Connection part of a line coupling Expired - Fee Related DE3903551C2 (en)

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CN102588703A (en) * 2011-01-05 2012-07-18 席勇 Novel plastic pipe fitting capable of preventing inner flanging
CN102720910A (en) * 2011-12-06 2012-10-10 席勇 Novel hot-melting bell-and-spigot joint plastic pipe fitting

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DE102004016234B4 (en) * 2003-04-02 2011-04-07 Eduardo Felipe May A device for thermofusion bonding of a pipe having an aluminum core embedded between thermoplastic layers with a thermoplastic joint
DE102004027831B3 (en) * 2004-06-08 2006-03-30 Veritas Ag Connection device for lines, motor vehicle with such a connection device and method for connecting lines
DE102006017170A1 (en) * 2006-04-12 2007-10-18 A. Raymond Et Cie Fluid line connecting part
CN102588703A (en) * 2011-01-05 2012-07-18 席勇 Novel plastic pipe fitting capable of preventing inner flanging
CN102720910A (en) * 2011-12-06 2012-10-10 席勇 Novel hot-melting bell-and-spigot joint plastic pipe fitting

Also Published As

Publication number Publication date
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DE3903551A1 (en) 1989-08-24

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