DE6605902U - DEVICE FOR WELDING THIN-WALLED PLASTIC PIPES - Google Patents

DEVICE FOR WELDING THIN-WALLED PLASTIC PIPES

Info

Publication number
DE6605902U
DE6605902U DE6605902U DE6605902U DE6605902U DE 6605902 U DE6605902 U DE 6605902U DE 6605902 U DE6605902 U DE 6605902U DE 6605902 U DE6605902 U DE 6605902U DE 6605902 U DE6605902 U DE 6605902U
Authority
DE
Germany
Prior art keywords
welding
plastic pipes
pipe
walled plastic
welding thin
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
Application number
DE6605902U
Other languages
German (de)
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.)
VARTA AG
Original Assignee
VARTA AG
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 VARTA AG filed Critical VARTA AG
Priority to DE6605902U priority Critical patent/DE6605902U/en
Publication of DE6605902U publication Critical patent/DE6605902U/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
    • B29C66/50—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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • 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"
    • B29C65/2053—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" characterised by special ways of bringing the welding mirrors into position
    • B29C65/2061—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" characterised by special ways of bringing the welding mirrors into position by sliding
    • B29C65/2069—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" characterised by special ways of bringing the welding mirrors into position by sliding with an angle with respect to the plane comprising the parts to be joined
    • B29C65/2076—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" characterised by special ways of bringing the welding mirrors into position by sliding with an angle with respect to the plane comprising the parts to be joined perpendicularly to the plane comprising 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
    • 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
    • B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • B29C65/7823—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
    • B29C65/7826—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being non-integral with the parts to be joined, e.g. particles
    • 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
    • B29C66/01—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
    • 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
    • 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
    • B29C66/822—Transmission mechanisms
    • B29C66/8226—Cam mechanisms; Wedges; Eccentric mechanisms
    • 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
    • B29C66/861—Hand-held tools
    • 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)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

EDUiJ 14 a Frankfurt/Fain, den 7. April 1970EDUiJ 14 a Frankfurt / Fain, April 7, 1970

3P - Fnn/We3P - Fnn / We

VARTA AKTIEIiGESELLSCHAPT Prankfurt am MainVARTA AKTIEIiGESELLSCHAPT Prankfurt am Main

Vorrichtung zum Verschweißen dünnwandiger KunststoffrohreDevice for welding thin-walled plastic pipes

Gegenstand der Erfindung ist eine Vorrichtung zum Verschweißen dünnwandiger Kunststoffrohre mit Hilfe einer Distanz- und Arretiervorrichtung und eines Eeizspiegels. Das Verschweißen von Kunststoffrohren mit Innendurchmessern von mehreren Zentimetern und Wandstärken über 5mm wird vielfach, z.B. in der Abwassertechnik, angewendet.The invention relates to a device for welding thin-walled plastic pipes with the help of a spacer and locking device and an electric mirror. The welding of Plastic pipes with internal diameters of several centimeters and wall thicknesses over 5mm are often used, e.g. in sewage technology.

Alle bekannten Vorrichtungen lassen sich jedoch nicht für Eunststoffrohre mit Rohrdurchmessern unterhalb 20 mm innen wad Wandstärken von weniger als 5 mm verwenden, wenn gefordert wird, daß bei der Verschweißung der Rohrteile keine Querschnittsverringerung entstehen darf und keine besonderen Verbindungsstücke, wie z.3. Fittings bei der Muffenschweißung, erforderlich sein sollen. Außerdem bieten die bekannten Schweißverfahren bei den genannten kleinen Rohrdurchmessern nicht genügend Sicherheit gegen Undichtigkeiten an der Schweißstelle.However, all known devices cannot be used for plastic pipes with pipe diameters below 20 mm inside wad wall thicknesses of less than 5 mm, if it is required that no cross-section reduction may occur when the pipe parts are welded and no special connecting pieces, such as e.g. Fittings for socket welding should be required. In addition, the known welding processes do not offer sufficient security against leaks at the welding point for the small pipe diameters mentioned.

Es ergab sich daher die Aufgabe, ein Verfahren und Vorrichtungen zu finden·, welche das Verschweißen dünner Kunststoffrohre bis herab zu ca. 5 nua Innendurchmesser und bei kleinen V/andstärken bis zu ca. 1mm ermöglichen, ohne daß eine nennenswerte Querschnittsverengung an der Schweißstelle entsteht.The object was therefore to find a method and devices which allow the welding of thin plastic pipes down to approx. 5 nua inside diameter and with small v / and thicknesses up to approx. 1mm without causing a noticeable narrowing of the cross-section at the welding point.

Diese Aufgabe wird durch das erfindungsgemäße Verfahren zum Verschweißen dünnwandiger Kunststoffrohre gelöst, bei dem die beiden Rohre in eine Distanz- und Arretiervorrichtung eingelegt v/erden. Die Rohrenden werden durch einen anschließend eingeführten Heizspiegel unter gleichzeitiger Teilflanschbildung aufgeheizt. Anschließend wird der Heizspiegel zurückgezogen und die heißen Teilflaasche werden zusammengeführt und unter Druck verschweißt.This object is achieved by the method according to the invention for welding thin-walled plastic pipes, in which the v / ground both tubes in a spacer and locking device. The pipe ends are then connected by a introduced heating mirror heated with simultaneous partial flange formation. Then the heating mirror is withdrawn and the hot partial bottles are brought together and welded under pressure.

Um die Ausbildung eines inneren Grates zu vermeiden und eine sichere Schweißung zu gewährleisten, ist bei der Durchführung des erfindungsgemäßen Verfahrens die Form des Heisspiegels zu beachtens durch die erreicht wird, daß die Schweißgratbildung fast ausschließlich auf der Außenseite der Rohre erfolgt; eine exakte ^inspannung und Führung der zu verschweißenden Rohrenden muß gewährleistet sein.In order to avoid the formation of an internal ridge and to ensure a secure weld in the implementation, is of the inventive method to follow the shape of the Heisspiegels s is achieved by that the Schweißgratbildung takes place almost exclusively on the outside of the tubes; Exact tensioning and guidance of the pipe ends to be welded must be guaranteed.

Bei einer bevorzugten Vorrichtung zur Durchführung des Verfahrens, die schematisch in der Abbildung wiedergegeben ist, sind folgende wesentliche Merkmale vorhanden: Die beiden Schenkel 5 der Schweißzange weisen an einem ^nde ■ Spannbacken 4 auf zur Aufnahme der Rohrstücke, wobei an einem |In a preferred device for performing the method, which is shown schematically in the figure, the following essential features are present: The two legs 5 of the welding tongs point at one end Clamping jaws 4 open to accommodate the pipe sections, with one |

6*0590223.7.706 * 0590223.7.70

in der "_ngenmitte gleitend eingefügten Schlitten 1 ein Distanzstück 3 und ein Heizspiegel 6 angebracht ist. Der Schlitten 1 weist zusätzlich noch ein Arbeitsprofil 8 zur" Einstellung der Bewegung der Rohrenden gegeneinander während der verschiedenen Arbeitsphasen auf.slide 1 inserted slidingly in the middle of the length Spacer 3 and a heating mirror 6 is attached. The carriage 1 also has a working profile 8 for " Adjustment of the movement of the pipe ends against each other during the different work phases.

Zur Vermeidung des bei der bekannten Spiegeischweißung auch im Eohrinnern entstehenden Grates dient vor allem das Profil des Heizspiegels. Es stellt einen nach beiden Seiten sym— metrischen Eotationskörper dar, der beispielsweise para-"bolischen Querschnitt hat, wobei der Durchmesser am Scheitel der halben Parabel 20 i> unter dem Rohrinnendurchmesser liegt. Der Abschlußdurchmesser D des Heizspiegels ist zweckmäßigerweise um die doppelte Rohrwandstärke größer als der Außendurchmesser des Rohres. Ein solches Profil des Heizspiegels bewirkt während des Aufheizens der zu verschweißenden Rohrenden eine leichte flanschförmii?e Aufweitung des Rohres^ *?as bei den ssschließenden Zusammenpressen einen flanschartigen Schweißwulst ergibt. Dieser bildet sich fast ausschließlich auf der Außenseite der Rohrleitung aus. Hierdurch bleibt der Innencuerschnitt praktisch ungeschmälert, ohne daß die Festigkeit der Schweißstelle verringert wird.In order to avoid the burr that also arises in the interior of the ear with the known mirror welding, the profile of the heating mirror is used in particular. It is a sym- to both sides metric Eotationskörper, for example, para- "bolischen cross-section, wherein the diameter at the apex of half a parabola 20 i> is less than the tube inner diameter. The final diameter D of the heating mirror is suitably around the double tube wall thickness greater than The outer diameter of the pipe. Such a profile of the heating surface causes a slight flange-like widening of the pipe during the heating of the pipe ends to be welded As a result, the inner cross section remains practically undiminished without reducing the strength of the weld.

Die Anwendung des Stunpfschweißverfahrens bei Rohren mit geringem Durchmesser und kleiner Wandstärke erfordert eine genau zentrische Gegeneinanöerfnhrung der zu verschweißenden Teile. Bereits eine Exzentrizität in der Größe einer halben WandstärkeThe use of the butt welding process for pipes with low Diameters and small wall thicknesses require the parts to be welded to be precisely centered against one another. Already an eccentricity the size of half a wall thickness

würde ne"ben einer unerwünschten Querschnitbsverringerung ungenügende Festigkeit der Schweißung ergeben. Die erfindungsgemäß "beschriebene Vorrichtung ermöglicht feste-Einspannung und eine zentrische Gegeneinanderführung der Rohrenden.would be next to an undesirable reduction in cross-section result in insufficient weld strength. The device described in accordance with the invention enables fixed clamping and the pipe ends are centered against one another.

Neben der besonderen Fora des Heizspiegels ist für das einwandfreie Gelingen der Schweißung sowohl ein definiertes Aufheizen und Ausbilden des Teilflansches als auch eine definierte Pressung vor Ende des Schweißvorganges erforderlich. Die hierfür erforderlichen Bewegungen der eingespannten Rohrenden sind materialabhängig und werden auch von dem Rohrdurchmesser und der Wandstärke entscheidend mitbestimmt. In addition to the special fora of the heating mirror, the perfect success of the weld, both a defined heating and formation of the partial flange as well as a defined pressing required before the end of the welding process. The required movements of the clamped Pipe ends depend on the material and are also decisively determined by the pipe diameter and the wall thickness.

Die erfindungsgemäße Vorrichtung ermöglicht genau einstellbare Y/erte für die vorstehend genannten Bewegungen der Rohrteile.The device according to the invention enables precisely adjustable Y / erte for the aforementioned movements of the Pipe parts.

Eine genaue Temperatursteuerung in Abhängigkeit von Werkstoff und den Hchrabmessungen ist sowohl für die Ausbildung der Teilflansche als auch für die Qualität und Zuverlässigkeit der Schweißung erforderlich.Precise temperature control depending on the material and the maximum dimensions is important both for the design of the partial flanges and for the quality and reliability welding required.

Ein Schweißvorgang , der die genannten Forderungen erfüllt, kann mit einer Vorrichtung ausgeführt werden, wie sie in der Abbildung dargestellt ist. Die Verschweißung der Rohrenden in dieser als "Schweißzange" bezeichneten Vorrichtung wird wie folgt durchgeführt:A welding process that meets the requirements mentioned can be carried out with a device as shown in FIG Figure is shown. The welding of the pipe ends in this device called "welding gun" is carried out as follows:

ββ§590223.7.7βββ§590223.7.7β

ig ig

Der Schlitten 1 befindet sich in der gezeichneten Position, Die beiden zu verschweißenden Rohre 2 werden gegen das Distanzstück 3 gedruckt und durch die Spannbacken 4 auf den Zangenschenkeln 5 festgelegt.The carriage 1 is in the position shown, The two tubes to be welded 2 are pressed against the spacer 3 and by the clamping jaws 4 on the Pliers legs 5 set.

Der Heizspiegel 6 rückt zwischen die Rohre, die sich hierauf um ein definiertes Maß gegen diesen bewegen lassen, tun dabei erwärmt und angeflanscht zu werden. Nach Abheben der Rohre von dem Heizspiegel rückt dieser aus und die Rohre werden zur Yerschweißung um das geeignete MaS zusammengepreßt.The heating mirror 6 moves between the tubes, which are located on it to move a defined amount against this, do so to be heated and flanged. After the tubes have been lifted off the heating mirror, the latter disengages and the tubes become pressed together by the appropriate measure for welding.

- Schutzansnrucb -- Protection request -

Claims (1)

EDUG 14 a Frankfurt/Fain, den 7.-April 1970EDUG 14 a Frankfurt / Fain, April 7th, 1970 3P- Fnn/We3P- Fnn / We SchutzansnruehProtection Vorrichtung zum Verschweißen dünnwandiger Kunststoff rohre, dadurch gekennzeichnet, daß die beiden Schenkel (5) der Schweißzange on einen: Ende Spannbacken (4) zur Aufnahme der Rohrstücke aufweisen und an einem in der Zangenmltte gleitend eingefügten Schlitten (1) ein Distanzstück (3) und ein Heisspiegel (6) angebracht sind, wobei der Schlitten (1) noch ein Arbeitsprofil zur Einstellung der Bewegung der Rohrenden ge_ geneiaander während der verschiedenen Arbeitsnhasen aufweist.Device for welding thin-walled plastic pipes, characterized in that the two legs (5) of the welding tongs on one: end of the clamping jaws (4) for receiving the Have pieces of pipe and a spacer (3) and a hot mirror on a slide (1) that is slidably inserted in the forceps device (6) are attached, the carriage (1) still has a working profile for adjusting the movement of the pipe ends ge_ having juxtaposed during the various phases of work.
DE6605902U 1968-02-27 1968-02-27 DEVICE FOR WELDING THIN-WALLED PLASTIC PIPES Expired DE6605902U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE6605902U DE6605902U (en) 1968-02-27 1968-02-27 DEVICE FOR WELDING THIN-WALLED PLASTIC PIPES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE6605902U DE6605902U (en) 1968-02-27 1968-02-27 DEVICE FOR WELDING THIN-WALLED PLASTIC PIPES

Publications (1)

Publication Number Publication Date
DE6605902U true DE6605902U (en) 1970-07-23

Family

ID=6586095

Family Applications (1)

Application Number Title Priority Date Filing Date
DE6605902U Expired DE6605902U (en) 1968-02-27 1968-02-27 DEVICE FOR WELDING THIN-WALLED PLASTIC PIPES

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510552A1 (en) * 1985-03-22 1986-09-25 Verlinden, Marius A. J., Antwerpen Weldable plastics mouldings
EP0895959A3 (en) * 1997-08-06 1999-07-07 Valpar Industrial Limited Beverage dispenser with welded plastic tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510552A1 (en) * 1985-03-22 1986-09-25 Verlinden, Marius A. J., Antwerpen Weldable plastics mouldings
EP0895959A3 (en) * 1997-08-06 1999-07-07 Valpar Industrial Limited Beverage dispenser with welded plastic tubes

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