DE2419991A1 - Synthetic material pipe socket seal - has sealing element retention seam comprising segments forming muff throat and ring - Google Patents

Synthetic material pipe socket seal - has sealing element retention seam comprising segments forming muff throat and ring

Info

Publication number
DE2419991A1
DE2419991A1 DE2419991A DE2419991A DE2419991A1 DE 2419991 A1 DE2419991 A1 DE 2419991A1 DE 2419991 A DE2419991 A DE 2419991A DE 2419991 A DE2419991 A DE 2419991A DE 2419991 A1 DE2419991 A1 DE 2419991A1
Authority
DE
Germany
Prior art keywords
bead
seam
muff
socket
segments
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.)
Pending
Application number
DE2419991A
Other languages
German (de)
Inventor
Johann Guetlhuber
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.)
ANGER KUNSTSTOFF
Original Assignee
ANGER KUNSTSTOFF
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 ANGER KUNSTSTOFF filed Critical ANGER KUNSTSTOFF
Priority to DE2419991A priority Critical patent/DE2419991A1/en
Publication of DE2419991A1 publication Critical patent/DE2419991A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • F16L47/08—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
    • F16L47/10—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket the sealing rings being maintained in place by additional means
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/261—Moulds having tubular mould cavities
    • B29C45/2612—Moulds having tubular mould cavities for manufacturing tubular articles with an annular groove
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C2045/4485—Removing or ejecting moulded articles for undercut articles the undercut forming mould part being rotatable into the space made available by the translation movement of another mould part

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The socket muff is made of synthetic material and produced by injection moulding. The face side of the seam retaining the sealing element comprises segments extending inwards towards the inner diameter of the muff and connected to each other via the seam wall. These segments also form the muff throat. The dimension of the distance between the segments is constant. The wall of the muff behind the seam is extended into the seam. A ring whose width is at most equal to the difference between the seam inner dia. and the inner dia. of the muff, is inserted in the face side of the seam.

Description

Fitting oder dergleichen mit mindestens einer Steckmuffe Die Erfindung bezieht sich auf einen Fitting oder dergleichen mit mindestens einer Steckmuffe, der vorzugsweise aus Kunststoff besteht und im Spritzgußverfahren hergestellt ist. Fitting or the like with at least one socket The invention refers to a fitting or the like with at least one socket, which is preferably made of plastic and is manufactured by injection molding.

Es ist bekannt, Fittings aus Kunststoff im Spritzgußverfahren herzustellen, wobei die Hinterschneidungen, d.h. Muffen mit Sicken für die Aufnahme von Dichtungsringen bzw. Klebern ganz oder teilweise im Blas-, Press-, Stauch- und Vakuumverfahren erzeugt werden, indem der im Urformprozess erzeugte Spritzling in einem nachfolgenden Umformungsverfahren, das mittels einer geeigneten Vorrichtung durchgeführt wird, seine endgültige Gestalt erhält.It is known to produce fittings made of plastic by injection molding, whereby the undercuts, i.e. sleeves with beads for the accommodation of sealing rings or glues wholly or partially produced by blowing, pressing, upsetting and vacuum processes by the injection molding produced in the primary forming process in a subsequent forming process, which is carried out by means of a suitable device, its final shape receives.

Es ist auch bekannt, Fittings oder dergleichen im Spritzgußverfahren herzustellen, indem die Muffe mit der Sicke im Urformprozess mit erzeugt werden, eine Nachbehandlung in einem sich anschließenden Umformverfahren also unnötig ist. Die dazu notwendigen Spritzgußwerkzeuge sind jedoch in der Herstellung äußerst aufwendig und auch störanfällig. In die meistens mit Klappkernen ausgerüsteten Spritzgußwerkzeuge für die Herstellung von Fittings mit Muffen und Sicken setzt-sich besonders in die Zwischenräume der Segmente der unter hohem Druck in die Spritzgußform eingespritzte Werkstoff fest, was zur Folge hat, daß die einzelnen Segmente des Klappkernes nicht mehr zurückgefahren werden können. Ein Entformen des Spritzling ist ohne Zerstörung desselben somit nicht mehr möglich.It is also known to injection mold fittings or the like by creating the socket with the bead in the primary molding process, post-treatment in a subsequent forming process is therefore unnecessary. The injection molding tools required for this, however, are extremely complex to manufacture and also prone to failure. In the injection molding tools, which are mostly equipped with hinged cores for the production of fittings with sockets and beads is particularly in the Interstices between the segments which are injected into the injection mold under high pressure Material solid, which has the consequence that the individual segments of the hinged core are not can be reduced more. The molded part can be removed from the mold without destruction the same is no longer possible.

Die Herstellung von Fittings mit hinterschnittenen Sicken ist mit den bekannt gewordenen Spritzgußwerkzeugen nicht möglich, auch Umformverfahren sind nur selten, z.B. gemäß DT-PS 1 805 446, dazu geeignet.The manufacture of fittings with undercut beads is included The injection molding tools that have become known are not possible, and forming processes are also possible only rarely, e.g. according to DT-PS 1 805 446, suitable for this.

Der Erfindung liegt die Aufgabe zugrunde, einen Fitting zu besitzen, der als Ganzes, also incl. Muffe und Sicke im Spritzgußverfahren mittels eines -Werkzeuges erzeugt ist, das die Nachteile der bekannten Werkzeuge dieser Art nicht mehr aufweist und wobei der Fitting auch hinterschnittene Sickenformen aufweisen kann.The invention is based on the object of having a fitting as a whole, including socket and bead in the injection molding process using a tool is generated that no longer has the disadvantages of the known tools of this type and where the fitting also have undercut bead shapes can.

Erfindungsgemäß wird dies dadurch erreicht, daß die Stirnseite der das Dichtelement beinhaltenden Sicke aus von deren Wand nach-innen bis zum Innendurchmesser der Muffe ragenden, untereinander über die Wand der Sicke verbundenen Segmente, die gleichzeitig den Muffenhals bilden, besteht, zwischen denen etwa gleiche Abmessungen wie die Segmente aufweisende Zwischenräume vorhanden sind.According to the invention this is achieved in that the face of the the bead containing the sealing element from its wall inwards to the inside diameter segments protruding from the socket and connected to one another via the wall of the bead, which at the same time form the socket neck, there is approximately the same dimensions between them how the interstices having the segments are present.

In weiterer Ausbildung der Erfindung wird vorgeschlagen, daß die Wand der Muffe hinter der Sicke und/oder die der Segmente im Bereich des Muffenhalses in die Sicke hinein verlängert ist.In a further embodiment of the invention it is proposed that the wall the socket behind the bead and / or that of the segments in the area of the socket neck is extended into the bead.

Eine Ausführungsvariante der Erfindung sieht vor, daß ein Spreizring, dessen Breite maximal der Differenz des Sickeninnendurchmessers und des Innendurchmessers der Muffe entspricht, in die Sicke stirnseitig eingesetzt ist.One embodiment of the invention provides that an expanding ring, the maximum width of which is the difference between the inside diameter of the bead and the inside diameter corresponds to the socket into which the bead is inserted on the front side.

Der Gegenstand der Erfindung weist den Vorteil auf, daß er die verschiedensten Sickenkonturen, selbst hinterschnittene Sicken, im Urformprozess erzeugt aufweisen kann. Irgendwelche Nacharbeiten bzw. Umformverfahren brauchen zur Herstellung des Erfindungsgegenstandes nicht mehr in Anwendung gebracht zu werden.The object of the invention has the advantage that it is the most diverse Have bead contours, even undercut beads, produced in the primary forming process can. Any reworking or forming processes are required to manufacture the Subject of the invention no longer to be used.

Die Erfindung ist nachstehend anhand eines in den Abbildungen dargestellten Ausführungsbeispieles näher erläutert.The invention is illustrated below with reference to one in the figures Embodiment explained in more detail.

Es zeigt Fig. 1 den Längsschnitt einer Rohrmuffe Fig. 2 eine Ausführungsvariante der Fig. 1 Fig. 3 eine Vorderansicht der Rohrmuffe und Fig. 4 einen Schnitt durch ein Spritzgußwerkzeug entsprechend dem Längsschnitt der Fig. 1.1 shows the longitudinal section of a pipe socket, FIG. 2 shows an embodiment variant 1, 3 is a front view of the pipe socket and FIG. 4 is a section through an injection molding tool corresponding to the longitudinal section of FIG. 1.

Der Fitting 1 besteht aus einem rohrförmigen Teil 1 a und den sich daran anschließenden Muffe#nteil 1 b. Der Muffenteil 1 b besitzt an seinem vorderen Ende einen Sickenteil 1 c, dessen stirnseitiges Ende aus einer Anzahl Segmenten 1 d besteht, die gleichzeitig den Muffenhals bilden und zwischen denen, wie aus Fig. 3 ersichtlich, Zwischenräume 1 e vorgesehen sind. Die Wand der Muffe 1 b kann vorteilhaft in die Sicke 1 c hinein verlängert sein. Diese ringförmige Verlängerung der Muffenwand 1 b ist mit 1 f bezeichnet. Das gleiche kann an der rückwärtigen Wand des Muffenhalses der Segmente 1 d vorgesehen sein. Diese ringförmige Fortsetzung des Muffenhalses in die Sicke 1 c hinein ist mit 1 g bezeichnet. Somit wird eine hinterschnittene Sicke 1 c erhalten. Außer dieser Sickenform sind auch andere Sickenformen herstellbar. In die Sicke 1 c ist ein Dichtelement, beispielsweise ein sogen.The fitting 1 consists of a tubular part 1 a and the adjoining socket part 1 b. The sleeve part 1 b has at its front End of a bead part 1 c, the front end of which consists of a number of segments 1 d, which at the same time form the socket neck and between which, as from Fig. 3 can be seen, spaces 1 e are provided. The wall of the sleeve 1 b can advantageously be extended into the bead 1 c. This annular extension the socket wall 1 b is denoted by 1 f. The same can be said of the rear Wall of the socket neck of the segments 1 d may be provided. This annular continuation of the socket neck into the bead 1 c is denoted by 1 g. Thus becomes a undercut bead 1 c received. Besides this bead shape are also other Bead shapes can be produced. In the bead 1 c is a sealing element, for example a so-called

Luftpolsterring 2, eingesetzt. Anstelle dieses Dichtelementes kann aber auch jeder andere geeignete Dichtring oder dergleichen eingesetzt werden.Air cushion ring 2 inserted. Instead of this sealing element can but any other suitable sealing ring or the like can also be used.

Des weiteren kann die Form der Sicke den Erfordernissen des einzusetzenden Dichtelementes angepasst werden.Furthermore, the shape of the bead can meet the requirements of the Sealing element are adapted.

Während die Anordnung gem. Fig. 1 für Fittings in Rohrleitungen mit relativ niedrigen Drücken absolut ausreichend ist, muß für Rohrleitungen mit höheren Drücken, beispielsweise 10 atü und darüber, in die Sicke 1 c ein Spreizring 3 eingesetzt werden, der die Zwischenräume 1 e der Stirnseite der Sicke 1 c überdeckt und somit ein Verquetschen bzw. Herausdrücken des Dichtringes 2 verhindert.While the arrangement according to FIG. 1 for fittings in pipelines with relatively low pressures is absolutely sufficient, must for pipelines with higher Press, for example, 10 atmospheres and above, an expanding ring 3 inserted into the bead 1 c which covers the spaces 1 e of the end face of the bead 1 c and thus the sealing ring 2 is prevented from being squeezed or pushed out.

In Fig. 4 ist ein Spritzwerkzeug zur Herstellung eines Fittings mit der Rohrmuffe bzw. Sicke gemäß der Erfindung dargestellt. Nachdem die Form mit Werkstoff gefüllt ist, wird das Werkzeug wie folgt entformt Das Werkzeugteil 4 wird axial in Richtung C mit bekannten Hilfsmitteln, beispielsweise hydraulisch gezogen. Hierdurch wird die Stirnseite der Sicke 1 c und das halbe Volumen derselben entformt. Anschließend wird mit bekannten mechanischen Mitteln, z.B. einer in der Abbildung nicht dargestellten Zahnstange das Werkzeugteil 5 gedreht und zwar soweit, bis die Klauen 5 ä über den Öffnungen 1 e der Sicke 1 c stehen. Sodann wird das Werkzeugteil 5 auch axial in Richtung C gezogen. Hierdurch erfolgt die vollkommene Entformung der Sicke 1 c. Die Entformung des Muffenbereiches 1 b erfolgt durch Axialbewegung des Kernes 6, ebenfalls in Richtung C. Nach Öffnen der äußeren Werkzeugteile 7 a und 7 b kann der Spritzling 1 aus der Form entnommen werden.In Fig. 4 is an injection mold for producing a fitting with the pipe socket or bead shown according to the invention. After the shape with material is filled, the tool is demolded as follows: The tool part 4 is axial pulled in direction C with known tools, for example hydraulically. Through this the end face of the bead 1 c and half the volume thereof is removed from the mold. Afterward is by known mechanical means, e.g. one not shown in the figure Rack that Tool part 5 rotated until the claws 5 ä above the openings 1 e of the bead 1 c. Then the tool part 5 also pulled axially in direction C. This results in the complete demolding of the Bead 1 c. The socket area 1 b is removed from the mold by the axial movement of the Core 6, also in the direction C. After opening the outer tool parts 7 a and 7 b, the molding 1 can be removed from the mold.

Claims (3)

PatentansprücheClaims 1. Fitting oder dergleichen mit mindestens einer Steckmuffe, der vorzugsweise aus-Kunststoff besteht und im Spritzgußverfahren hergestellt ist, d a d u r c h g e k e n nz e i c h n e t , d a ß die Stirnseite der das Dichtelement (2) beinhaltenden Sicke (1 c) aus von deren Wand nach innen bis zum Innendurchmesser der Muffe(1 b)ragenden, untereinander über die Wand der Sicke verbundenen Segmente (1 d), die gleichzeitig den Muffenhals bilden, besteht, zwischen denen etwa gleiche Abmessungen wie die Segmente (1 d) aufweisende Zwischenräume (1 e) vorhanden sind.1. Fitting or the like with at least one socket, which is preferably consists of plastic and is manufactured by injection molding, d u r c h g e k e n n nz e i c h n e t that the end face of the sealing element (2) containing Bead (1 c) protruding from the wall inwards to the inner diameter of the socket (1 b), segments connected to one another via the wall of the bead (1 d), which at the same time form the socket neck, between which approximately the same dimensions as the Interstices (1 e) having segments (1 d) are present. 2. Fitting nach Anspruch 1, d a d u r c h g e k e n nz e i c h n e t, d a ß die Wand der Muffe (1 b) hinter der Sicke und/oder die der Segmente (1 d) im Bereich des Muffenhalses in die Sicke (1 c) hinein verlängert ist (lg bzw. 1 h). 2. Fitting according to claim 1, d a d u r c h g e k e n nz e i c h n e t, that the wall of the socket (1 b) behind the bead and / or that of the segments (1 d) is extended into the bead (1 c) in the area of the socket neck (lg resp. 1 h). 3. Fitting nach Anspruch 1 und 2, d a d u r c h g e -k e n n z e i c h n e t, d a ß ein Spreizring (3), dessen Breite maximal der Differenz des Sickeninnendurchmessers und des Innendurchmessers der Muffe entspricht, in die Sicke (1 c) stirnseitig eingesetzt ist.3. Fitting according to claim 1 and 2, d a d u r c h g e -k e n n z e i c h n e t, d a ß an expanding ring (3), the width of which is a maximum of the difference in the inner diameter of the bead and corresponds to the inner diameter of the sleeve, inserted into the bead (1 c) on the front side is. L e e r s e i t eL e r s e i t e
DE2419991A 1974-04-25 1974-04-25 Synthetic material pipe socket seal - has sealing element retention seam comprising segments forming muff throat and ring Pending DE2419991A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2419991A DE2419991A1 (en) 1974-04-25 1974-04-25 Synthetic material pipe socket seal - has sealing element retention seam comprising segments forming muff throat and ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2419991A DE2419991A1 (en) 1974-04-25 1974-04-25 Synthetic material pipe socket seal - has sealing element retention seam comprising segments forming muff throat and ring

Publications (1)

Publication Number Publication Date
DE2419991A1 true DE2419991A1 (en) 1975-10-30

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ID=5913906

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2419991A Pending DE2419991A1 (en) 1974-04-25 1974-04-25 Synthetic material pipe socket seal - has sealing element retention seam comprising segments forming muff throat and ring

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985508A2 (en) * 1998-07-29 2000-03-15 Polypipe Plc Mould and core for moulding undercut articles
DE10041881B4 (en) * 1999-09-03 2013-11-28 Stabilus Gmbh Plastic carrier with sealing ring
WO2020128439A1 (en) * 2018-12-20 2020-06-25 John Guest International Limited A mold and method for molding a body or cap for a connector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985508A2 (en) * 1998-07-29 2000-03-15 Polypipe Plc Mould and core for moulding undercut articles
EP0985508A3 (en) * 1998-07-29 2001-05-09 John Upton Mould and core for moulding undercut articles
DE10041881B4 (en) * 1999-09-03 2013-11-28 Stabilus Gmbh Plastic carrier with sealing ring
WO2020128439A1 (en) * 2018-12-20 2020-06-25 John Guest International Limited A mold and method for molding a body or cap for a connector
US11787095B2 (en) 2018-12-20 2023-10-17 John Guest International Limited Mold and method for molding a body or cap for a connector

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