DE2309286B2 - DEVICE FOR BUTT WELDING CIRCULAR CYLINDER PIPES MADE OF THERMOPLASTIC PLASTIC - Google Patents

DEVICE FOR BUTT WELDING CIRCULAR CYLINDER PIPES MADE OF THERMOPLASTIC PLASTIC

Info

Publication number
DE2309286B2
DE2309286B2 DE19732309286 DE2309286A DE2309286B2 DE 2309286 B2 DE2309286 B2 DE 2309286B2 DE 19732309286 DE19732309286 DE 19732309286 DE 2309286 A DE2309286 A DE 2309286A DE 2309286 B2 DE2309286 B2 DE 2309286B2
Authority
DE
Germany
Prior art keywords
bed
bracket
ring
pipe
pipes
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.)
Granted
Application number
DE19732309286
Other languages
German (de)
Other versions
DE2309286C3 (en
DE2309286A1 (en
Inventor
Anatolij Wladimirowitsch; Zemskow Konstantin Grigorjewitsch; Fedotow Leonid Fedorowitsch; Sokolow Wiktor Pawlowitsch; Moskau Sladkow
Original Assignee
Nautschno-Issledowatelskij Institut Nii Mosstroj, Moskau
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Filing date
Publication date
Application filed by Nautschno-Issledowatelskij Institut Nii Mosstroj, Moskau filed Critical Nautschno-Issledowatelskij Institut Nii Mosstroj, Moskau
Publication of DE2309286A1 publication Critical patent/DE2309286A1/en
Publication of DE2309286B2 publication Critical patent/DE2309286B2/en
Application granted granted Critical
Publication of DE2309286C3 publication Critical patent/DE2309286C3/en
Expired 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/865—Independently movable welding apparatus, e.g. on wheels
    • 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"
    • B29C65/2092—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" and involving the use of a facer
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/032—Mechanical after-treatments
    • 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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8414—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different diameter
    • 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
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • 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
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • 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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • 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

Landscapes

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

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Stumpfschweißen kreiszylindrischer Rohre aus thermoplastischem Kunststoff, bei der auf einem starren Rahmen relativ gegeneinander bewegbare Einspanneinfichtungen angeordnet sind, zwischen die einge-Ipannten Rohre eine Plandreheinrichtung und ein Schweißspiegel einfahrbar sind und die Einspannvorrichtungen jeweils aus einem schalenartigen Bett, an dem eine ein- oder mehrteilige, auf das in dem Bett liegende Rohr schwenkbare Klammer angelenkt ist. Bei finer bekannten Vorrichtung dieser Art werden die Rohre in den Einspanneinrichtungen durch Anpassen Ihrer Lage, und zwar durch Drehen derselben und mit Hilfe von Zwischenlagen zentriert.The invention relates to a device for butt welding circular cylindrical thermoplastic pipes Plastic, with clamping devices that can be moved relative to one another on a rigid frame are arranged, between the clamped pipes a face turning device and a Welding mirrors can be retracted and the clamping devices each consist of a shell-like bed the one one-piece or multi-part, the one in the bed horizontal tube pivotable bracket is hinged. In finer known device of this type are the Pipes in the clamping devices by adjusting their position, namely by rotating them and with Centered with the help of intermediate layers.

Eine Verbesserung der Zentrierung wird bei einer ius der schwedischen Patentschrift 3 26 024 bekannten Vorrichtung erreicht, bei der die bewegliche Einspanntinrichtung auch in Querrichtung verschieblich ist. Auch hier geschieht jedoch das Zentrieren von Hand, •vas arbeitsaufwendig ist und nicht immer zu befriedigender Qualität der Stöße führt.An improvement in the centering is known from one ius of the Swedish patent specification 3,26024 Achieved device in which the movable clamping device is also displaceable in the transverse direction. Here too, however, the centering is done by hand, • which is labor-intensive and not always more satisfactory Quality of impact leads.

Aufgabe der Erfindung ist es. die Einspannvorrichtungen so auszubilden, daß die Rohre mit wenig Arbeitsaufwand genau zentriert eingespannt werden tonnen.It is the object of the invention. to train the jigs so that the tubes with little Tons of work are clamped precisely centered.

Ausgehend von der eingangs beschriebenen Ausbil- &° dung, wird zur Lösung dieser Aufgabe erfindungsgemäß vorgeschlagen, daß an den Innenflächen des schalenartigen Bettes und der Klammer kreissegmentartige Andrückglieder durch radial angeordnete Zug federn befestigt sind und daß zwischen dem Bett mit der Klammer und den Andrückgliedern ein um seine Mittelachse drehbarer Ring liegt, der sich auf dem Bett und der Klammer abstützt und der Flächen aufweist.Based on the training & ° dung, it is proposed according to the invention to solve this problem that on the inner surfaces of the shell-like bed and the clamp circular segment-like pressure members by radially arranged train Feathers are attached and that between the bed with the bracket and the pressing members a to his Central axis rotatable ring is, which is supported on the bed and the bracket and has surfaces.

auf denen die Andrückglieder anliegen und durch die bei einer Drehung des Rings die Andrückglieder entgegen der Federwirkung in Richtung der Rohroberfläche bewegbar sind.on which the pressure members rest and the pressure members counteract when the ring rotates the spring action can be moved in the direction of the pipe surface.

Eine zweckmäßige Weiterbildung ist es, wenn die Andriickelieder mit Rollböcken versehen sind, die auf Keilflächen des Rings aufliegen.It is an expedient further training if the Andriickelieder are provided with trolleys that open Wedge surfaces of the ring rest.

Die Erfindung wird nachfolgend durch die Beschreibung eines Ausführungsbeispiels an Hand der Zeichnungen weiter erläutert. Es zeigtThe invention is illustrated below by the description an exemplary embodiment further explained with reference to the drawings. It shows

Fig. 1 die Seitenansicht einer Vorrichtung zurr, Stumpfschweißen kreiszylindrischer Rohre,Fig. 1 is a side view of a device for butt welding circular cylindrical pipes,

F i g. 2 die Frontansicht derselben,F i g. 2 the front view of the same,

F i g. 3 die Frontansicht einer als Bügel ausgebildeten Einspannvorrichtung,F i g. 3 the front view of a clamping device designed as a bracket,

F i g. 4 die Seitenansicht derselben.F i g. 4 the side view of the same.

Die Schweißanlage für Kunststoffrohre enthält einen Rahmen 1 (F i g. 1, 2), auf dem die unbeweglichen Bügel 2. 2" und bewegliche Bügel 3, 3', ein Werk 4 zum Verschieben der beweglichen Bügel und zum Übertragen von Kräften auf die zu verschweißenden Rohrstirnflächen, eine Plandreheinrichtung 5, ein Heizelement 6. ; η Steuerpult 7, eine hydraulische Einrichtung 8 und Hubrollen 9 montiert sind.The welding system for plastic pipes contains a frame 1 (Fig. 1, 2) on which the immovable bracket 2.2 " and movable bracket 3, 3 ', a work 4 for moving the movable bracket and for transferring forces to the Pipe end faces to be welded, a facing device 5, a heating element 6 ; η control panel 7, a hydraulic device 8 and lifting rollers 9 are mounted.

Der Bügel zum Festhalten der Rohre besteht aus einem Bett 10, Klammern 11, einer Spannvorrichtung 12 abgefederten Andrückgliedern 13 (F i g. 3, 4), einem Ring 14 mit keilförmigen Aussparungen 15, Roilenböcken 16 und einem Hydraulikzylinder 17, der mit dem handbedienten hydraulischen Hebebock 18 (F ig. 1,2) verbunden ist.The bracket for holding the pipes in place consists of a bed 10, clamps 11 and a jig 12 spring-loaded pressure members 13 (Fig. 3, 4), a ring 14 with wedge-shaped recesses 15, roller brackets 16 and a hydraulic cylinder 17, which is operated with the hand-operated hydraulic jack 18 (Fig. 1,2) is connected.

Zum Festhalten von Rohren mit unterschiedlichen Durchmessern sind die Bügel mit (aus der Zeichnung nicht ersichtlichen) mehrstufigen Einlagen versehen.To hold pipes with different diameters in place, the brackets are marked with (from the drawing non-visible) multi-level deposits.

Das Werk 4 zum Verschieben der beweglichen Bügel und zum Übertragen von Kräften auf die Rohrsiirnflächen besteht aus unbeweglichen Führungen 19 und Hydraulikzylindern 20 zum Verschieben der beweglichen Bügel 3,3'.The work 4 for moving the movable bracket and for transferring forces to the pipe end faces consists of fixed guides 19 and hydraulic cylinders 20 for moving the movable ones Bracket 3,3 '.

Die Bügel 2, 2' und 3, 3' sind mit Vorrichtungen 21 zum Überwachen der Abschme'ztiefe der Rohrslirnflächen ausgerüstet.The brackets 2, 2 'and 3, 3' are provided with devices 21 for monitoring the cutting depth of the pipe end faces equipped.

Die Lage der Vorrichtung 21 in bezug auf den Bügel kann geändert und die Vorrichtung selbst mittels einer Justierschraube 28 fixiert werden. Die Vorrichtung 21 wird, wenn sie sich nicht im Betrieb befindet, in den Bügel geschoben.The position of the device 21 in relation to the bracket can be changed and the device itself by means of a Adjusting screw 28 can be fixed. The device 21, when it is not in operation, in the Bracket pushed.

Die Plandreheinrichtung 5 (Fig. 1, 2) ist am Anlagenrahmen 1 angelenkt und wird während ihres Betriebs mit Hilfe von Handgriffen 29 auf die Führungen 19 gesetzt.The facing device 5 (Fig. 1, 2) is hinged to the system frame 1 and is during their Operationally set on the guides 19 with the aid of handles 29.

Die Plandreheinrichtung 5 wird mittels des Hydraulikzylinders 30, in die Arbeitsstellung gebracht und dann während des Bearbeitens der Rohrsiirnflächen in Achsrichtung mit Hilfe von Hydraulikzylindern 31 verschoben. Das Heizelement 6 ist in Form einer Scheibe mit in ihr eingesetzten Heizspiralen ausgeführt, wobei die Scheibe lose am Anlagenrahmen befestigt ist sowie mit Hilfe eines Handgriffs 32 gehoben, gesenkt und in Längsrichtung verschoben werden kann. Das Heizelement ist mit einem (aus den Zeichnungen nicht ersichtlichen) Temperaturregler ausgerüstet, welcher das Aufrechterhalten einer vorgegebenen Schweißtemperatur ermöglicht.The facing device 5 is brought into the working position by means of the hydraulic cylinder 30 and then while machining the pipe end faces Shifted in the axial direction with the aid of hydraulic cylinders 31. The heating element 6 is in Executed in the form of a disk with heating coils inserted in it, the disk loosely on the System frame is attached and with the help of a handle 32 raised, lowered and in the longitudinal direction can be moved. The heating element is equipped with a (not shown in the drawings) Equipped with a temperature controller, which maintains a predetermined welding temperature enables.

Die /um Zusammenschweißen bestimmten Rohre werden in die Bügel 2, 2' und 3, 3' eingelegt, wonach jeder Bügel mittels der Spannvorrichtung 12 geschlos-The / around welding certain pipes are placed in the bracket 2, 2 'and 3, 3', after which each bracket is closed by means of the clamping device 12.

sen wird. Hierbei sollen die Stirnflächen 35 mm aus den Bügeln herausragen. Dann wird, indem der hydraulische Hebebock 18 betätigt wird, über den Hydrauliklyiinder 17 (F i g. 3, 4) eine Kraft auf die abgefederten Andrückgüeder !3 übertr:ig»n welche fest mit einer großen Kraft das Rohr zusammenpressen und gleichleitig es längs der Bügelachse zentrieren. Diese wird dadurch erreicht, daß die Kolbenstange d~s Hydrauliklylinders 17, welche am Ring 14 angelenkt ist, diesen Ring ·η bezug auf die ßügelachse dreht, wobei die keillörmigen Aussparungen 15 des Rings 14 eine Kraft auf die Rollenböcke 16 und über sie auf die abgefederten Andrückgüeder 13 übertragen. Nach dem Einspannen der Rohre wird vom Steuerpult 7 (F i g. 1, 2) aus das Heizelement 6 eingeschaltet. Zwischen den Rohrstirn- !lachen wird mit Hilfe der Handgriffe 29 und des Hydraulikzylinders 30 die Plandreheinrichtung 5 aufgeletzt. will sen. The end faces should protrude 35 mm from the brackets. Then by the hydraulic Lifting jack 18 is operated via the Hydrauliklyiinder 17 (Fig. 3, 4) a force on the spring-loaded Andrückgüeder! 3 transfers which firmly with a compress the tube with great force and center it along the bracket axis at the same time. This will achieved in that the piston rod of the hydraulic cylinder 17, which is articulated on the ring 14, rotates this ring · η with respect to the bracket axis, the wedge-shaped Recesses 15 of the ring 14 exert a force on the roller blocks 16 and through them on the sprung Andrückgüeder 13 transferred. After the pipes have been clamped, the control panel 7 (Figs. 1, 2) opens the Heating element 6 switched on. Using the handles 29 and the Hydraulic cylinder 30, the face turning device 5 put on.

Vom Sieuerpuh 7 aus werden mit Hilfe des Handgriffs 33 der (aus der Zeichnung nicht ersichtliche) Hydraulikmotor der Plandreneinrichtung und mit Hilfe des Handgriffs 34 die Hydraulikzylinder 31 einge- »chaltet, mit deren Hilfe damit begonnen wird, die in Betrieb befindliche Plandreheinrichtung in Längsrichtung zu verschieben, wobei zunächst die eine und dann die andere Rohrstirnfläche bearbeitet wird.From Sieuerpuh 7 with the help of the handle 33 the (not visible from the drawing) hydraulic motor of the facing device and with the help of the handle 34, the hydraulic cylinder 31 is switched on, with the help of which it is started to work in Operational facing device to move in the longitudinal direction, initially the one and then the other pipe face is machined.

Nach dem Beendigen des aus dem Bearbeiten der Rohrstirnfiächen bestehenden Prozesses wird vom Steuerpult aus mit Hilfe des Handgriffs 34 die Hubrichtung des Hydraulikzylinders 30 umgeschaltet und Huf diese Weise die Plandreheinrichtung 5 aus der Arbeitsstellung herausgeführt.After the end of the process consisting of machining the pipe end faces, the Control panel with the help of the handle 34 the stroke direction of the hydraulic cylinder 30 is switched and Huf this way the facing device 5 from the working position led out.

Das Heizelement 6 wird, wenn an ihm die vorgegebene Schweißtemperatur (2000C) erreicht wird, mit Hilfe des Handgriffs 32 auf die Führungen 19 aufgesetzt, hiernach werden die lustierschrauben durch Herausdrehen aus den Bügeln 2 und 3 gelockert und die Vorrichtungen zum Überwachen der Abschmelzliefe herausgeschoben.When the specified welding temperature (200 ° C.) is reached, the heating element 6 is placed on the guides 19 with the aid of the handle 32, after which the loosening screws are loosened by unscrewing them from the brackets 2 and 3 and the devices for monitoring the melting flow pushed out.

Vom Steuerpult 7 (F i g. 1 und 2) aus werden mit HiI-ie des Handgriffs 35 die Hydraulikzylinder 20 eingeschaltet und das Ende des in den beweglichen Bügeln 3 und 3' eingespannten Rohrs wird an das Heizelement 6 und letzteres an das Ende des in den unbeweglichen Bügeln 2 und 2' eingespannten Rohrs angepreßt. Der vorgegebene Abschmelzdruck (0,8 kp/cm-1) wird automatisch während des ganzen Prozesses aufrechterhalten. From the control panel 7 (FIGS. 1 and 2) the hydraulic cylinders 20 are switched on with the aid of the handle 35 and the end of the pipe clamped in the movable brackets 3 and 3 'is connected to the heating element 6 and the latter to the end of the pressed in the immovable bracket 2 and 2 'clamped pipe. The specified melting pressure (0.8 kp / cm- 1 ) is automatically maintained during the entire process.

Beim Erscheinen eines Lichtsignals am Anzeigegerät 36 nach Erreichen der optimalen Abschmelztiefe wird vom Steuerpult 7 aus mit Hilfe des Handgriffs 35 die Hubrichtung des Hydraulikzylinders 20 umgeschaltet und die beweglichen Bügel 3, 3' mit dem in ihnen eingespannten Rohr werden vom Heizelement 6 fortgeführt.When a light signal appears on the display device 36 after the optimum melting depth has been reached the stroke direction of the hydraulic cylinder 20 is switched from the control panel 7 with the aid of the handle 35 and the movable brackets 3, 3 'with the pipe clamped in them are continued by the heating element 6.

Dann wird das Heizelement 6 mit Hilfe der Handgriffe 32 vom Ende des in den unbeweglichen Bügeln 2, 2' eingespannten Rohrs geöffnet und aus der Arbeitszone herausgeführt. Hiernach wird mit Hilfe des Handgriffs 35 die Hubrichtung der Zylinder 20 umgeschaltet und die abgeschmolzenen Rohrstirnfiächen werden bei einem vorgegebenen Stauchdruck (1,5 kp/cm:) in Berührung gebracht. Der erwähnte Druck wird automatisch im Laufe der ganzen Haltezeil (5 ... 7 min), während der die Schweißnaht abgekühlt wird, eingestellt und aufrechterhalten. Nach dem Abkühlen der Schweißnaht werden die Justierschrauben der Vorrichtung zum Überwachen der Abschmelztiefe gelockert, die erwähnten Vorrichtungen werden herumgeschwenkt, in den Bügel hineingeschoben und wiederum befestigt. Dann werden die hydraulischen Hebeböcke 18 (F i g. 1 ... 4) betätigt und mit Hilfe der Hydraulikzylinder 17 werden die zusammengeschweißten Rohre von der Einspannung in den Bügeln 2. 2' und 3, 3' befreit. Zuletzt werden die Spannvorrichtungen 12 gelöst und die Klammern 11 geöffnet.Then the heating element 6 is opened with the aid of the handles 32 from the end of the pipe clamped in the immovable brackets 2, 2 'and guided out of the work zone. Thereafter, the stroke direction of the cylinder 20 is switched with the aid of the handle 35 and the melted pipe end faces are brought into contact at a predetermined upsetting pressure (1.5 kp / cm:). The pressure mentioned is automatically set and maintained throughout the entire holding line (5 ... 7 min) during which the weld seam is cooled. After the weld seam has cooled down, the adjusting screws of the device for monitoring the melting depth are loosened, the devices mentioned are swiveled around, pushed into the bracket and fastened again. Then the hydraulic jacks 18 (Figs. 1 ... 4) are actuated and with the aid of the hydraulic cylinders 17 the welded pipes are released from being clamped in the brackets 2, 2 'and 3, 3'. Finally, the clamping devices 12 are released and the clamps 11 are opened.

Die zusammengeschweißten Rohre werden mit Hi 1 feder Hubrolien 9 angehoben und die Anlage wird zum andern Ende des angeschweißten Rohrs gerollt, um den nächsten Stoß zu schweißen, oder das geschweißte Rohrleitungsstück wird auf den Rollen 9 verschoben.The welded pipes are spring-loaded with Hi 1 Hubrolien 9 raised and the system is rolled to the other end of the welded pipe to the next joint to be welded, or the welded pipe section is moved on the rollers 9.

Beim konstruktiven Aufbau der Anlage kann im Vergleich mit den bekannten Anlagen bedeutend die Arbeitsproduktivität durch Vermindern des Zeitaufwands zum Zentrieren, Anpassen der Rohrlage und Befestigen der zu verschweißenden Rohre in den Bügeln erhöht werden. Mittels Zeitnahme wurde festgestellt. daß für die erwähnten Vorbereitungsarbeiten oft von 40 bis 70% (je nach dem Durchmesser der zu verschweißenden Rohre) der für den ganzen Bearbeitungsprozeß und <;::s Schweißen der Rohre erforderlichen Zeit benötigt wird, wobei die beschriebene konstruktive Ausführung der Bügel zuverlässiges Festhalten der Rohre gewährleistet, was beim Schweißen von Rohren mit (z. B. 630 mm) großen Durchmessern und bedeutender Wandstärke große Bedeutung hat. Hierbei kann die Stauchkraft Werte in der Größenordnung von 1.5Mp erreichen. Beim Verwenden der beschriebenen Bügel in Verbindung mit dünnwandigen Kunststoffrohren kann mittels dieser Bügel die Unrundheit der Rohrenden korrigiert v.erden.In terms of the construction of the system, compared to the known systems, the Work productivity by reducing the time it takes to center, adjust the pipe position and fasten of the pipes to be welded are increased in the bracket. It was determined by means of timekeeping. that for the mentioned preparatory work often from 40 to 70% (depending on the diameter of the to welding pipes) of the necessary for the whole machining process and <; :: s welding of the pipes Time is required, with the described structural design of the bracket reliably holding on of the pipes ensures what happens when welding pipes with (e.g. 630 mm) large diameters and significant wall thickness is of great importance. Here, the upsetting force can have values of the order of magnitude of 1.5Mp. When using the bracket described in conjunction with thin-walled Plastic pipes can use these brackets to correct the roundness of the pipe ends.

Die Anlage ermöglicht es auch, die Schweißzeit zu vermindern, und gewährleistet hohe Schweißverbindungsgüte, da die Bügelkonstruktion Vorrichtungen zum Überwachen der Abschmelztiefe der Rohre während des Schweißens enthält. Diese Vorrichtungen ermöglichen es, den Abschmelzprozeß beim Erreichen der optimalen Abschmelztiefe der Rohrstirnflächen (z. B. 1,5 mm für Polyäthylenrohre mit hoher Dichte) zu beenden. Wenn in der Bügclkonstruktion keine Vorrichtungen zum Überwachen der Abschmelztiefe vorgesehen sind, wie dies bei den bekannten Anlagenbauarten der Fall ist, wird gewöhnlich mit einer größeren als die erforderliche Abschmelztiefe der Rohrstirnfiächen gearbeitet, um sicher zu sein, daß die Schweißnaht vollkommen durchgeschweißt wird.The system also makes it possible to reduce the welding time and ensures a high weld joint quality, as the bracket construction has devices for monitoring the melting depth of the pipes during of welding. These devices make it possible to stop the melting process on reaching the optimum melting depth of the pipe end faces (e.g. 1.5 mm for high-density polyethylene pipes) break up. If no devices for monitoring the melting depth are provided in the bracket construction are, as is the case with the known types of systems, is usually with a larger worked as the required melting depth of the pipe end faces in order to be sure that the weld seam is completely welded through.

Eine vergrößerte Abschmelztiefe der Rohrkanten liefert keine Vorteile in bezug auf die Festigkeit der Schweißverbindungen, doch hat sie eine Vergrößerung der Grathöhe im Rohr zur Folge, wodurch der hydraulische Widerstand des Rohrs beim Diirchlc-iten von fließfähigen Medien stark wächst und auch die Absdimebdauer der Rohre 1.5... 2.0mal verlängert wird (und folglich die Anlagenleistung vermindert wird), was beim Schweißen von Rohren mit 630 mm Durchmesser /11 einem Zeitverlust von 2 . . J min für jeden Stoß führen kann.An increased melting depth of the pipe edges does not provide any advantages with regard to the strength of the Welded joints, however, it increases the burr height in the pipe, which causes the hydraulic resistance of the pipe when diirecting of flowable media grows strongly and so does the duration of the Absdimeb of the pipes is extended 1.5 ... 2.0 times (and consequently the system performance is reduced) what when welding pipes with a diameter of 630 mm / 11 a time loss of 2. . J min lead for each stroke can.

Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings

Claims (2)

Patentansprüche:Patent claims: 1. Vorrichtung zum Stumpfschweißen kreiszylindrischer Rohre aus thermoplastischem Kunststoff, bei der auf einem stät ι cn Rahmen relativ gegeneinander bewegbare Einspanneinrichtungen angeordnet sind, zwischen die eingespannten Rohre eine Plandreheinrichtung und ein Schweißspiegel einfahrbar sind und die Einspannvorrichtungen jeweils aus einem schalenartigen Bett, an dem eine ein- oder mehrteilige, auf das in dem Bett liegende Rohr schwenkbare Klammer angelenkt ist, dadurch gekennzeichnet, daß an den Innenflächen des schalenartigen Bettes (10) und der Klammer (11) kreissegmentartige Andrückglieder (13) durch radial angeordnete Zugfeder befestigt |hd und daß zwischen dem Bett (10) mit der Klammer (11) und den Andrückgliedern (13) ein um seine Mittelachse drehbarer Ring (14) liegt, der sich auf dem Bett und der Klammer abstützi und der Flächen (15) aufweist, auf denen die Andrückglieder (13) anliegen und durch die bei einer Drehung des Rings (14) die Andrückglieder (13) entgegen der Federwirkung in Richtung der Rohroberfläche bewegbar sind.1. Device for butt welding circular cylindrical pipes made of thermoplastic material, when on a steady cn frame relative to each other movable clamping devices are arranged, between the clamped tubes a Facing device and a welding mirror are retractable and the clamping devices each from a bowl-like bed, on which a one-piece or multi-part bed, on top of the one lying in the bed Pipe pivotable clamp is articulated, characterized in that on the inner surfaces of the shell-like bed (10) and the clamp (11) circular segment-like pressure members (13) fastened by a radially arranged tension spring | hd and that between the bed (10) with the clamp (11) and the pressing members (13) has a ring (14) which is rotatable about its central axis and rests on the bed and the bracket support and the surfaces (15) on which the pressing members (13) and when the ring (14) rotates, the pressure members (13) counter to the Spring action are movable in the direction of the pipe surface. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Andrückglieder mit Rollböcken (16) versehen sind, die auf Keilflächen des Rings (14) aufliegen.2. Apparatus according to claim 1, characterized in that the pressing members with roller blocks (16) are provided, which rest on the wedge surfaces of the ring (14).
DE19732309286 1972-03-30 1973-02-24 Device for butt welding circular cylindrical pipes made of thermoplastic material Expired DE2309286C3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SU1766153 1972-03-30
SU1766153A SU430599A1 (en) 1972-03-30 1972-03-30

Publications (3)

Publication Number Publication Date
DE2309286A1 DE2309286A1 (en) 1973-10-18
DE2309286B2 true DE2309286B2 (en) 1976-01-29
DE2309286C3 DE2309286C3 (en) 1976-09-09

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DD104047A1 (en) 1974-02-20
FI55461C (en) 1979-08-10
DE2313382B2 (en) 1975-11-20
DD104463A1 (en) 1974-03-12
FI54442B (en) 1978-08-31
DE2313382A1 (en) 1973-10-11
CS165550B1 (en) 1975-12-22
FI55461B (en) 1979-04-30
SU430599A1 (en) 1976-06-25
FI54442C (en) 1979-10-26
DE2309286A1 (en) 1973-10-18
SE393558B (en) 1977-05-16
SE388810B (en) 1976-10-18
CS166970B1 (en) 1976-03-29

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